CN109934056B - Fingerprint identification module, fingerprint identification and touch-control response subassembly and display module - Google Patents
Fingerprint identification module, fingerprint identification and touch-control response subassembly and display module Download PDFInfo
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Abstract
The invention provides a fingerprint identification module, a fingerprint identification and touch control sensing assembly, a display assembly and a terminal, wherein the fingerprint identification module is used for the terminal and comprises: the sum of the distance between any two adjacent first sensing electrodes and the width of any one of the first sensing electrodes is a first channel period width W1; and a plurality of first emitter electrodes, the sum of the distance between any two adjacent first emitter electrodes and the width of any one of the first emitter electrodes is the second channel period width W2; wherein the first channel period width W1 and/or the second channel period width W2 ranges from 20 μm to 200 μm. According to the invention, by increasing the widths of the first channel period and the second channel period in the fingerprint identification module, the tolerance range of the intersection of the first induction electrode and the first emitting electrode can more easily meet the preset requirement, and the production and processing are convenient.
Description
Technical Field
The invention belongs to the technical field of terminal equipment, and particularly relates to a fingerprint identification module, a fingerprint identification and touch sensing assembly, a display assembly and a terminal.
Background
With the development of electronic storage technology, some electronic devices (such as mobile phones and computers) and the like store a large amount of important data such as personal information and the like, and the security of the important data becomes more important. Fingerprint identification realizes identity identification by using the characteristics of uniqueness and stability of fingerprints, and the fingerprints do not need to be memorized by a user and are convenient to carry, so that the fingerprint identification is more and more applied to terminal equipment.
In order to improve the accuracy of fingerprint identification in the existing fingerprint identification technology, the widths of the driving electrodes and the sensing electrodes are usually limited to be very small, and meanwhile, the distance between two adjacent driving electrodes and the distance between two adjacent sensing electrodes are also very small. As shown in fig. 1, in the conventional fingerprint identification module, the sum of the distance between two adjacent first sensing electrodes 12 'and the width of any one of the first sensing electrodes 12' is 20 μm, and the sum of the distance between two adjacent first transmitting electrodes 14 'and the width of any one of the first transmitting electrodes 14' is 20 μm, so that each fingerprint identification unit can independently sense a fingerprint input signal in the area. However, because the width of the electrode and the distance between the adjacent electrodes are too small, and the channel and the circuit in the fingerprint identification device are too dense, in the production and processing process, when the induction electrode and the driving electrode are arranged in a crossed manner, the deviation is easily caused, the contraposition deviation is generated, the yield of the fingerprint identification device is reduced, the fingerprint identification effect is reduced, and the difficulty is increased for production and processing.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the invention proposes a fingerprint identification module.
The second aspect of the present invention provides a fingerprint identification and touch sensing device.
A third aspect of the invention provides a display assembly.
A fourth aspect of the present invention is directed to a terminal.
In view of the above, a first aspect of the present invention provides a fingerprint identification module for a terminal, including: the sum of the distance between any two adjacent first sensing electrodes and the width of any one of the first sensing electrodes is a first channel period width W1; and a plurality of first emitter electrodes, the sum of the distance between any two adjacent first emitter electrodes and the width of any one of the first emitter electrodes is the second channel period width W2; wherein the first channel period width W1 and/or the second channel period width W2 ranges from 20 μm to 200 μm.
In the present invention, the sum of the distance between two adjacent first sensing electrodes and the width of one of the first sensing electrodes is the first channel period width W1, and the sum of the distance between two adjacent first emitting electrodes and the width of one of the first emitting electrodes is the second channel period width W2. Through increasing first passageway cycle width W1 and second passageway cycle width W2 in the fingerprint identification module, the adjustment is 20 mu m to 200 mu m for the tolerance range of first response electrode and first emitting electrode junction can be very easy satisfies predetermined bound tolerance requirement, and then on the one hand makes things convenient for the production and processing, and another convenience can effectively avoid first response electrode and first emitting electrode junction offset too much and influence the fingerprint identification effect. Specifically, by adjusting the first channel period width W1 and/or the second channel period width W2 to 20 μm to 200 μm, because the ridges and valleys of the fingerprint have a tiny size of 300 μm to 500 μm, when the first channel period width is 200 μm, on one hand, when the finger presses the fingerprint identification module, the ridges and valleys of the fingerprint can effectively trigger the fingerprint identification module, so as to meet the requirement of fingerprint identification performance, on the other hand, the yield of the fingerprint identification module can also be effectively improved, and the production and processing are facilitated.
In addition, the fingerprint identification module in the above embodiment provided by the present invention may further have the following additional technical features:
in the above technical solution, preferably, the first channel period width W1 and/or the second channel period width W2 is in a range of 70 μm to 200 μm.
In the technical scheme, the range of the first channel period width W1 and/or the range of the second channel period width W2 are further limited to 70 μm to 200 μm, and the widths of the first channel period and the second channel period are increased, so that the requirement for alignment tolerance can be met more easily during processing of the first transmitting electrode and the first sensing electrode, and the phenomenon that the requirement for alignment tolerance is exceeded during processing after the first transmitting electrode and the first sensing electrode are slightly deviated is avoided, and the fingerprint identification effect is influenced.
In any of the above solutions, preferably, the alignment tolerance of the first sensing electrode and the first transmitting electrode is less than or equal to 150 μm, and the ratio range of the corresponding tolerance to the first channel period width W1 or the second channel period width W2 is greater than 0 and less than or equal to 1.
In this technical scheme, when processing fingerprint identification module, first response electrode and first emitter electrode need carry out counterpoint, and the tolerance range that reaches that both counterpoints is counterpoint tolerance promptly. The technical scheme defines that the ratio range of the alignment tolerance of the first sensing electrode and the first transmitting electrode to the first channel period width W1 is larger than 0 and smaller than or equal to 1, or defines that the ratio range of the alignment tolerance of the first sensing electrode and the first transmitting electrode to the second channel period width W2 is larger than 0 and smaller than or equal to 1, and further specifically defines that the alignment tolerance is smaller than or equal to 150 μm. The alignment tolerance is less than or equal to 150 mu m, so that the first sensing electrode and the first transmitting electrode can be more conveniently processed, and the phenomenon that the fingerprint identification fails due to the fact that the alignment tolerance of the first sensing electrode and the first transmitting electrode is too large and is more than 150 mu m can be effectively avoided. In addition, the ratio of the alignment tolerance to the first channel period width W1 or the second channel period width W2 is greater than 0 and less than or equal to 1, and the range of the first channel period width W1 and/or the second channel period width W2 is 20 μm to 200 μm, so that the first sensing electrode and the first emitting electrode can be more easily processed according to the preset tolerance requirement, the alignment is more accurate, and the effectiveness of fingerprint identification is ensured. Preferably, the alignment tolerance of the first sensing electrode and the first transmitting electrode ranges from 100 μm to 150 μm.
In any of the above solutions, preferably, the ratio of the corresponding tolerance to the first channel period width W1 or the second channel period width W2 is less than or equal to 0.1.
In the technical scheme, the alignment tolerance of the first sensing electrode and the first transmitting electrode is further limited, and the ratio of the alignment tolerance to the first channel period width W1 or the second channel period width W2 is less than or equal to 0.1, so that the alignment of the first sensing electrode and the first transmitting electrode is more accurate, and the sensitivity and the accuracy of fingerprint identification are further improved. In addition, because the range of the first channel period width W1 and/or the second channel period width W2 is 20 μm to 200 μm, the channel period is wide, and thus, it can be effectively avoided that when the first sensing electrode or the first emitting electrode is misaligned due to a narrow channel period, the maximized reaction is reflected to the alignment between the first sensing electrode and the first emitting electrode, which results in poor alignment effect of the first sensing electrode and the first emitting electrode and poor fingerprint identification effect. In addition, the first induction electrode and the first emitting electrode are easier to process, high sensitivity of fingerprint identification is facilitated, and the fingerprint identification device is suitable for batch production.
In any of the above technical solutions, preferably, the plurality of first sensing electrodes are arranged in parallel at equal intervals, the plurality of first emitting electrodes are arranged in parallel at equal intervals, and the plurality of first sensing electrodes and the plurality of first emitting electrodes are arranged in a cross manner.
In this technical scheme, a plurality of first response electrodes are equidistant and parallel arrangement each other, and a plurality of first transmitting electrodes are equidistant and parallel arrangement each other. On the one hand, the arrangement of the first induction electrodes and the first transmitting electrodes is more uniform, and the sensitivity of fingerprint identification is unified everywhere. On the other hand, the plurality of first channel period widths W1 are equal, the plurality of second channel period widths W2 are equal, production and processing are facilitated, and the influence on the fingerprint identification effect caused by too much offset at the intersection of the first sensing electrode and the first emitting electrode is further avoided.
The second aspect of the present invention provides a fingerprint identification and touch sensing device, comprising: a touch sensing module; and a fingerprint identification module as in any one of the above technical solutions.
The fingerprint identification and touch sensing assembly provided by the invention has the touch sensing module and the fingerprint identification module in any one of the above technical schemes, and further has the beneficial effects of the fingerprint identification module in any one of the above technical schemes, which are not repeated herein.
In the above technical solution, preferably, the touch sensing module includes: the sum of the distance between any two adjacent second sensing electrodes and the width of any one of the second sensing electrodes is a third channel period width W3; and a plurality of second emitter electrodes, the sum of the distance between any two adjacent second emitter electrodes and the width of any one of the second emitter electrodes is a fourth channel period width W4; wherein the third channel period width W3 and/or the fourth channel period width W4 ranges from 2mm to 6 mm.
In the technical scheme, the third channel period width W3 and the fourth channel period width W4 in the touch sensing module are increased and adjusted to be 2mm to 6mm, so that the tolerance range of the intersection of the second sensing electrode and the second transmitting electrode can easily meet the preset upper and lower limit tolerance requirements, and further, the production and the processing are convenient on one hand, and the influence on the fingerprint identification effect caused by too much offset of the intersection of the second sensing electrode and the second transmitting electrode can be effectively avoided by another convenience. Specifically, the third channel period width W3 and/or the fourth channel period width W4 are adjusted to be 2mm to 6mm, so that the situation that the second sensing electrode and the second emitting electrode are easily deviated in the processing process due to the fact that the channel period width is too small and less than 2mm is avoided, the contraposition effect between the second sensing electrode and the second emitting electrode is greatly influenced, and further the touch sensitivity and the touch precision are influenced; on the other hand, the influence on the touch effect caused by the overlarge width of the channel period which is larger than 6mm is avoided.
In any of the above solutions, preferably, the third channel period width W3 and the fourth channel period width W4 are 4.5 mm.
In the technical scheme, the third channel period width W3 and/or the fourth channel period width W4 are further limited to 4.5mm, and the widths of the third channel period and the fourth channel period are increased, so that the requirement for alignment tolerance can be met more easily during the processing of the second transmitting electrode and the second sensing electrode, the production and the processing are convenient, and the phenomenon that the requirement for alignment tolerance to be met during the processing is exceeded after the second transmitting electrode and the second sensing electrode are slightly deviated is avoided, and the fingerprint identification effect is influenced.
In any of the above solutions, preferably, the alignment tolerance of the second sensing electrode and the second transmitting electrode is less than or equal to 150 μm, and the ratio of the corresponding tolerance to the third channel period width W3 or the fourth channel period width W4 is less than or equal to 0.05.
In this technical scheme, when processing touch-control response module, second response electrode and second transmitting electrode need carry out counterpoint, and the tolerance range that reaches of both counterpoints is counterpoint tolerance between them promptly. The technical scheme defines that the ratio of the alignment tolerance of the second sensing electrode and the second transmitting electrode to the third channel period width W3 is less than or equal to 0.05, or defines that the ratio of the alignment tolerance of the second sensing electrode and the second transmitting electrode to the fourth channel period width W4 is less than or equal to 0.05, and further specifically defines that the alignment tolerance is less than or equal to 150 μm. The alignment tolerance is less than or equal to 150 micrometers, so that the second sensing electrode and the second transmitting electrode can be processed more conveniently, and the poor touch effect caused by the overlarge alignment tolerance of the second sensing electrode and the second transmitting electrode which is more than 150 micrometers can be effectively avoided. In addition, the ratio of the alignment tolerance to the third channel period width W3 or the fourth channel period width W4 is limited to be less than or equal to 0.05, and the third channel period width W3 and/or the fourth channel period width W4 range from 2mm to 6mm, so that the second sensing electrode and the second transmitting electrode can be processed more easily according to the preset tolerance requirement, the alignment is more accurate, and the touch sensitivity and accuracy are ensured. Preferably, the alignment tolerance of the second sensing electrode and the second transmitting electrode ranges from 100 μm to 150 μm.
In any of the above technical solutions, preferably, the plurality of second sensing electrodes are arranged in parallel at equal intervals, the plurality of second transmitting electrodes are arranged in parallel at equal intervals, and the plurality of second sensing electrodes and the plurality of second transmitting electrodes are arranged in a cross manner.
In this technical scheme, a plurality of second response electrodes are equidistant and parallel arrangement each other, and a plurality of second transmitting electrodes are equidistant and parallel arrangement each other. On one hand, the arrangement of the plurality of second sensing electrodes and the plurality of second transmitting electrodes is more uniform, so that the sensitivity of touch sensing is unified everywhere; on the other hand, the plurality of third channel period widths W3 are equal, and the plurality of fourth channel period widths W4 are equal, so that the production and the processing are convenient, and the influence on the fingerprint identification effect caused by excessive offset at the intersection of the second sensing electrode and the second transmitting electrode is further avoided.
In any of the above solutions, preferably, the ratio of the first channel period width W1 to the third channel period width W3 ranges from 0.005 to 0.1, and/or the ratio of the second channel period width W2 to the fourth channel period width W4 ranges from 0.005 to 0.1.
In this solution, the first channel period width W1 is set in proportion to the third channel period width W3, and/or the second channel period width W2 is set in proportion to the fourth channel period width W4. On the one hand, the touch sensing module and the fingerprint identification module have good light transmission performance, and especially when the fingerprint identification module is located in a display area of a terminal screen, the light transmission uniformity can be improved. On the other hand, when the touch sensing module and the fingerprint identification module are integrated, namely, when the sensing electrodes in the touch sensing module and the fingerprint identification module are positioned on the same side of the same substrate and the transmitting electrodes are positioned on the same side of the same substrate, when the two substrates are stacked, the cross positions of the second transmitting electrode and the second sensing electrode in the touch sensing module and the cross positions of the first transmitting electrode and the first sensing electrode in the fingerprint identification module can be affected more uniformly by the generated deviation. The tolerance requirement of the intersection of the second transmitting electrode and the second sensing electrode in the touch sensing module and the tolerance requirement of the intersection of the first transmitting electrode and the first sensing electrode in the fingerprint identification module can be met simultaneously. Preferably, the ratio of the first channel period width W1 to the third channel period width W3 ranges from 0.01 to 0.04, and/or the ratio of the second channel period width W2 to the fourth channel period width W4 ranges from 0.01 to 0.04, and further, both are preferably 0.03.
In any one of the above technical solutions, preferably, the fingerprint identification and touch sensing component further includes: the first substrate, the first induction electrode and the second induction electrode are positioned on the same side of the first substrate; and the first emission electrode and the second emission electrode are positioned on the same side of the second substrate.
In the technical solution, the first sensing electrode in the fingerprint identification module and the second sensing electrode in the touch sensing module are located on the same side of the first substrate, the first transmitting electrode in the fingerprint identification module and the second transmitting electrode in the touch sensing module are located on the same side of the second substrate, and when the first substrate and the second substrate are stacked, because the tolerance requirement of the cross-alignment position of the second sensing electrode and the second transmitting electrode in the touch sensing module is different from the tolerance requirement of the cross-alignment position of the first sensing electrode and the first transmitting electrode in the fingerprint identification module, the tolerance requirement in the touch sensing module is much larger than the tolerance requirement in the fingerprint identification module, and therefore, the situation that the touch sensing module meets the tolerance requirement and the cross-alignment position of the first sensing electrode and the first transmitting electrode in the fingerprint identification module does not meet the tolerance requirement can easily occur, resulting in assembly failure of the two substrates and affecting the processing efficiency. In the invention, the first channel period width W1 and the second channel period width W2 are increased, so that the intersection of the first transmitting electrode and the first sensing electrode in the fingerprint identification module can easily meet the tolerance requirement, the tolerance requirement of the touch sensing module and the fingerprint identification module can be met, and the processing efficiency and the product percent of pass can be improved.
In addition, the fingerprint identification module and the touch sensing module can be arranged in the following mode: one is as follows: fingerprint identification and touch-control response subassembly still includes: the first induction electrode and the second induction electrode are respectively positioned on two sides of the third substrate; and the first emission electrode and the second emission electrode are positioned on the same side of the fourth substrate. The second step is as follows: fingerprint identification and touch-control response subassembly still includes: the first induction electrode and the second induction electrode are positioned on the same side of the fifth substrate; and the first emitting electrode and the second emitting electrode are respectively positioned at two sides of the sixth substrate.
A third aspect of the present invention provides a display assembly comprising: a display screen; and a fingerprint identification module as in any of the above solutions; or the fingerprint identification and touch sensing component according to any of the above technical solutions.
The display module provided by the present invention has the fingerprint identification module or the fingerprint identification and touch sensing module according to any one of the above technical solutions, and thus has the beneficial effects of the fingerprint identification module or the fingerprint identification and touch sensing module according to any one of the above technical solutions, which are not repeated herein.
A fourth aspect of the present invention provides a terminal, including: the fingerprint identification module according to any one of the above technical solutions; or the fingerprint identification and touch sensing component according to any one of the above technical solutions; or a display module as in the above solutions.
The terminal provided by the present invention has the fingerprint identification module, the fingerprint identification and touch sensing component, or the display component of any of the above technical solutions, and further has the beneficial effects of the fingerprint identification module, the fingerprint identification and touch sensing component, or the display component of any of the above technical solutions, which are not repeated herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a diagram illustrating a fingerprint recognition module according to the related art;
FIG. 2 is a diagram illustrating a fingerprint recognition module according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
in fig. 1: 12 'a first sensing electrode, 14' a first emitter electrode; in fig. 2: 12 a first sensing electrode, 14 a first emitter electrode.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The fingerprint identification module, the fingerprint identification and touch sensing assembly, the display assembly and the terminal according to some embodiments of the present invention are described below with reference to fig. 2.
As shown in fig. 2, an embodiment of a first aspect of the present invention provides a fingerprint identification module for a terminal, including: the sum of the distance between any two adjacent first sensing electrodes 12 and the width of any one of the first sensing electrodes 12 is a first channel period width W1; and a plurality of first emitter electrodes 14, the sum of the pitch of any two adjacent first emitter electrodes 14 and the width of any one of the first emitter electrodes 14 being the second channel period width W2; wherein the first channel period width W1 and/or the second channel period width W2 ranges from 20 μm to 200 μm.
In the present invention, the sum of the distance between two adjacent first sensing electrodes 12 and the width of one of the first sensing electrodes 12 is the first channel period width W1, and the sum of the distance between two adjacent first emitter electrodes 14 and the width of one of the first emitter electrodes 14 is the second channel period width W2. The adjustment is 20-200 μm by increasing the first channel period width W1 and the second channel period width W2 in the fingerprint identification module, so that the tolerance range of the intersection of the first sensing electrode 12 and the first emitting electrode 14 can easily meet the preset upper and lower limit tolerance requirements, and further, on one hand, the production and processing are convenient, and on the other hand, the influence on the fingerprint identification effect caused by too much offset of the intersection of the first sensing electrode 12 and the first emitting electrode 14 can be effectively avoided. Specifically, by adjusting the first channel period width W1 and/or the second channel period width W2 to 20 μm to 200 μm, because the ridges and valleys of the fingerprint have a tiny size of 300 μm to 500 μm, when the first channel period width is 200 μm, on one hand, when the finger presses the fingerprint identification module, the ridges and valleys of the fingerprint can effectively trigger the fingerprint identification module, so as to meet the requirement of fingerprint identification performance, on the other hand, the yield of the fingerprint identification module can also be effectively improved, and the production and processing are facilitated.
In one embodiment of the present invention, preferably, as shown in fig. 2, the first channel period width W1 and/or the second channel period width W2 ranges from 70 μm to 200 μm.
In this embodiment, the first channel period width W1 and/or the second channel period width W2 is further limited to be in a range of 70 μm to 200 μm, and the widths of the first channel period and the second channel period are increased, so that the requirement for alignment tolerance can be met more easily when the first emitter electrode 14 and the first sensing electrode 12 are processed, and the fingerprint recognition effect is prevented from being affected when the requirement for alignment tolerance to be met by processing is exceeded after the first emitter electrode 14 and the first sensing electrode 12 are slightly shifted. Preferably, the first channel period width W1 and/or the second channel period width W2 is 70 μm or 100 μm or 120 μm.
In one embodiment of the present invention, it is preferable that the alignment tolerance of the first sensing electrode 12 and the first transmitting electrode 14 is less than or equal to 150 μm, and the ratio range of the corresponding tolerance to the first channel period width W1 or the second channel period width W2 is greater than 0 and less than or equal to 1.
In this embodiment, when the fingerprint identification module is manufactured, the first sensing electrode 12 and the first transmitting electrode 14 need to be aligned, and the obtained tolerance range of the alignment between the two electrodes is the alignment tolerance. The technical scheme defines that the ratio range of the alignment tolerance of the first sensing electrode 12 and the first transmitting electrode 14 to the first channel period width W1 is greater than 0 and less than or equal to 1, or defines that the ratio range of the alignment tolerance of the first sensing electrode 12 and the first transmitting electrode 14 to the second channel period width W2 is greater than 0 and less than or equal to 1, and further specifically defines that the alignment tolerance is less than or equal to 150 μm. The alignment tolerance is less than or equal to 150 μm, so that the processing of the first sensing electrode 12 and the first transmitting electrode 14 is more convenient, and the failure of fingerprint identification caused by the overlarge alignment tolerance of the first sensing electrode 12 and the first transmitting electrode 14 which is more than 150 μm can be effectively avoided. In addition, the ratio of the alignment tolerance to the first channel period width W1 or the second channel period width W2 is greater than 0 and less than or equal to 1, and the range of the first channel period width W1 and/or the second channel period width W2 is 20 μm to 200 μm, so that the first sensing electrode 12 and the first emitting electrode 14 can be more easily processed according to the preset tolerance requirement, the alignment is more accurate, and the fingerprint identification effectiveness is ensured.
In one embodiment of the present invention, it is preferable that a ratio of the above-described corresponding tolerance to the first channel period width W1 or the second channel period width W2 is less than or equal to 0.1.
In this embodiment, the alignment tolerance of the first sensing electrode 12 and the first transmitting electrode 14 is further defined, and the ratio of the first channel period width W1 or the second channel period width W2 is less than or equal to 0.1, so that the alignment of the first sensing electrode 12 and the first transmitting electrode 14 is more accurate, and the sensitivity and accuracy of fingerprint identification are further improved. In addition, since the range of the first channel period width W1 and/or the second channel period width W2 is 20 μm to 200 μm, the channel period is wide, and it can be effectively avoided that when the first sensing electrode 12 or the first emitter electrode 14 is misaligned due to a narrow channel period, the maximized reaction is reflected to the alignment between the two, which results in poor alignment effect of the first sensing electrode 12 and the first emitter electrode 14 and poor fingerprint identification effect. In addition, the first sensing electrode 12 and the first emitter electrode 14 are easier to process, which is beneficial to realizing high sensitivity of fingerprint identification and is suitable for mass production. Preferably, the ratio of the above-described corresponding tolerance to the first channel period width W1 or the second channel period width W2 is 0.08 or 0.09.
In an embodiment of the present invention, preferably, the plurality of first sensing electrodes 12 are equally spaced and arranged in parallel, the plurality of first emitting electrodes 14 are equally spaced and arranged in parallel, and the plurality of first sensing electrodes 12 and the plurality of first emitting electrodes 14 are arranged in a cross manner.
In this embodiment, the plurality of first sensing electrodes 12 are equally spaced and arranged in parallel with each other, and the plurality of first transmitting electrodes 14 are equally spaced and arranged in parallel with each other. On one hand, the arrangement of the first sensing electrodes 12 and the first transmitting electrodes 14 is more uniform, and the sensitivity of fingerprint identification is further unified everywhere. On the other hand, the plurality of first channel period widths W1 are equal, and the plurality of second channel period widths W2 are equal, so that the production and the processing are convenient, and the influence on the fingerprint identification effect caused by too much offset at the intersection of the first sensing electrode 12 and the first transmitting electrode 14 is further avoided.
An embodiment of a second aspect of the present invention provides a fingerprint identification and touch sensing device, including: a touch sensing module; and a fingerprint identification module as in any one of the above embodiments.
The fingerprint identification and touch sensing assembly provided by the invention has the touch sensing module and the fingerprint identification module in any one of the embodiments, and further has the beneficial effects of the fingerprint identification module in any one of the embodiments, which are not repeated herein.
In an embodiment of the present invention, preferably, the touch sensing module includes: the sum of the distance between any two adjacent second sensing electrodes and the width of any one of the second sensing electrodes is a third channel period width W3; and a plurality of second emitter electrodes, the sum of the distance between any two adjacent second emitter electrodes and the width of any one of the second emitter electrodes is a fourth channel period width W4; wherein the third channel period width W3 and/or the fourth channel period width W4 ranges from 2mm to 6 mm.
In this embodiment, the third channel period width W3 and the fourth channel period width W4 in the touch sensing module are increased and adjusted to be 2mm to 6mm, so that the tolerance range of the intersection of the second sensing electrode and the second transmitting electrode can easily meet the preset upper and lower limit tolerance requirements, and further, on one hand, the production and processing are facilitated, and on the other hand, the influence on the fingerprint identification effect caused by too much offset at the intersection of the second sensing electrode and the second transmitting electrode can be effectively avoided. Specifically, the third channel period width W3 and/or the fourth channel period width W4 are adjusted to be 2mm to 6mm, so that the situation that the second sensing electrode and the second emitting electrode are easily deviated in the processing process due to the fact that the channel period width is too small and less than 2mm is avoided, the contraposition effect between the second sensing electrode and the second emitting electrode is greatly influenced, and further the touch sensitivity and the touch precision are influenced; on the other hand, the influence on the touch effect caused by the overlarge width of the channel period which is larger than 6mm is avoided.
In one embodiment of the present invention, it is preferable that the third channel period width W3 and the fourth channel period width W4 be 4.5 mm.
In this embodiment, the third channel period width W3 and/or the fourth channel period width W4 are further limited to 4.5mm, and the widths of the third channel period and the fourth channel period are increased, so that the requirement for alignment tolerance can be met more easily during the processing of the second transmitting electrode and the second sensing electrode, the production and the processing are facilitated, and the phenomenon that the requirement for alignment tolerance required by the processing is exceeded after the second transmitting electrode and the second sensing electrode are slightly shifted, and the fingerprint identification effect is affected is avoided.
In one embodiment of the present invention, it is preferable that the alignment tolerance of the second sensing electrode and the second transmitting electrode is less than or equal to 150 μm, and the ratio of the corresponding tolerance to the third channel period width W3 or the fourth channel period width W4 is less than or equal to 0.05.
In this embodiment, when the touch sensing module is processed, the second sensing electrode and the second transmitting electrode need to be aligned, and the tolerance range of the alignment of the two electrodes is the alignment tolerance of the two electrodes. The technical scheme defines that the ratio of the alignment tolerance of the second sensing electrode and the second transmitting electrode to the third channel period width W3 is less than or equal to 0.05, or defines that the ratio of the alignment tolerance of the second sensing electrode and the second transmitting electrode to the fourth channel period width W4 is less than or equal to 0.05, and further specifically defines that the alignment tolerance is less than or equal to 150 μm. The alignment tolerance is less than or equal to 150 micrometers, so that the second sensing electrode and the second transmitting electrode can be processed more conveniently, and the poor touch effect caused by the overlarge alignment tolerance of the second sensing electrode and the second transmitting electrode which is more than 150 micrometers can be effectively avoided. In addition, the ratio of the alignment tolerance to the third channel period width W3 or the fourth channel period width W4 is limited to be less than or equal to 0.05, and the third channel period width W3 and/or the fourth channel period width W4 range from 2mm to 6mm, so that the second sensing electrode and the second transmitting electrode can be processed more easily according to the preset tolerance requirement, the alignment is more accurate, and the touch sensitivity and accuracy are ensured. Preferably, the alignment tolerance of the second sensing electrode and the second transmitting electrode ranges from 100 μm to 150 μm.
In an embodiment of the present invention, preferably, the plurality of second sensing electrodes are equally spaced and arranged in parallel with each other, the plurality of second emitting electrodes are equally spaced and arranged in parallel with each other, and the plurality of second sensing electrodes and the plurality of second emitting electrodes are arranged in a cross manner.
In this embodiment, the plurality of second sensing electrodes are equally spaced and arranged in parallel with each other, and the plurality of second transmitting electrodes are equally spaced and arranged in parallel with each other. On one hand, the arrangement of the plurality of second sensing electrodes and the plurality of second transmitting electrodes is more uniform, so that the sensitivity of touch sensing is unified everywhere; on the other hand, the plurality of third channel period widths W3 are equal, and the plurality of fourth channel period widths W4 are equal, so that the production and the processing are convenient, and the influence on the fingerprint identification effect caused by excessive offset at the intersection of the second sensing electrode and the second transmitting electrode is further avoided.
In one embodiment of the present invention, it is preferable that a ratio of the first channel period width W1 to the third channel period width W3 ranges from 0.005 to 0.1, and/or a ratio of the second channel period width W2 to the fourth channel period width W4 ranges from 0.005 to 0.1.
In this embodiment, the first channel period width W1 is set in proportion to the third channel period width W3, and/or the second channel period width W2 is set in proportion to the fourth channel period width W4. On the one hand, the touch sensing module and the fingerprint identification module have good light transmission performance, and especially when the fingerprint identification module is located in a display area of a terminal screen, the light transmission uniformity can be improved. On the other hand, when the touch sensing module and the fingerprint identification module are integrated, that is, when the sensing electrodes in the touch sensing module and the fingerprint identification module are located on the same side of the same substrate and the transmitting electrodes are located on the same side of the same substrate, when the two substrates are stacked, the cross point of the second transmitting electrode and the second sensing electrode in the touch sensing module and the cross point of the first transmitting electrode 14 and the first sensing electrode 12 in the fingerprint identification module can be more uniformly affected by the generated deviation. The tolerance requirement of the intersection of the second transmitting electrode and the second sensing electrode in the touch sensing module and the tolerance requirement of the intersection of the first transmitting electrode 14 and the first sensing electrode 12 in the fingerprint identification module can be met simultaneously. Preferably, the ratio of the first channel period width W1 to the third channel period width W3 ranges from 0.01 to 0.04, and/or the ratio of the second channel period width W2 to the fourth channel period width W4 ranges from 0.01 to 0.04, and further, both are preferably 0.03.
In an embodiment of the present invention, preferably, the fingerprint identification and touch sensing component further includes: the first substrate, the first induction electrode 12 and the second induction electrode are positioned on the same side of the first substrate; the second substrate, the first emitter electrode 14 and the second emitter electrode are located on the same side of the second substrate.
In this embodiment, the first sensing electrode 12 in the fingerprint identification module and the second sensing electrode in the touch sensing module are located on the same side of the first substrate, the first transmitting electrode 14 in the fingerprint identification module and the second transmitting electrode in the touch sensing module are located on the same side of the second substrate, and when the first substrate and the second substrate are stacked, since the tolerance requirement at the cross-alignment position of the second sensing electrode and the second transmitting electrode in the touch sensing module is different from the tolerance requirement at the cross-alignment position of the first sensing electrode 12 and the first transmitting electrode 14 in the fingerprint identification module, the tolerance requirement in the touch sensing module is much larger than the tolerance requirement in the fingerprint identification module, and therefore, it is very easy for the touch sensing module to meet the tolerance requirement and the cross-alignment position of the first sensing electrode 12 and the first transmitting electrode 14 in the fingerprint identification module does not meet the tolerance requirement, resulting in assembly failure of the two substrates and affecting the processing efficiency. In the invention, the first channel period width W1 and the second channel period width W2 are increased, so that the intersection of the first transmitting electrode 14 and the first sensing electrode 12 in the fingerprint identification module can easily meet the tolerance requirement, thereby being beneficial to meeting the tolerance requirements of the touch sensing module and the fingerprint identification module at the same time and improving the processing efficiency and the product percent of pass.
In addition, the fingerprint identification module and the touch sensing module can be arranged in the following mode: one is as follows: fingerprint identification and touch-control response subassembly still includes: the first induction electrode 12 and the second induction electrode are respectively positioned at two sides of the third substrate; and a fourth substrate, the first emitter electrode 14 and the second emitter electrode being located on the same side of the fourth substrate. The second step is as follows: fingerprint identification and touch-control response subassembly still includes: the first induction electrode 12 and the second induction electrode are positioned on the same side of the fifth substrate; and a sixth substrate, the first emitter electrode 14 and the second emitter electrode being positioned at both sides of the sixth substrate, respectively.
An embodiment of a third aspect of the present invention provides a display assembly, including: a display screen; and a fingerprint identification module as in any one of the above embodiments; or a fingerprint recognition and touch sensing assembly as in any of the above embodiments.
The display module provided by the present invention has the fingerprint identification module or the fingerprint identification and touch sensing module of any of the above embodiments, and further has the beneficial effects of the fingerprint identification module or the fingerprint identification and touch sensing module of any of the above embodiments, which are not repeated herein.
An embodiment of a fourth aspect of the present invention provides a terminal, including: a fingerprint identification module as in any one of the above embodiments; or a fingerprint recognition and touch sensing component as in any of the above embodiments; or a display assembly as in the previous embodiments.
The terminal provided by the present invention has the fingerprint identification module, the fingerprint identification and touch sensing component, or the display component of any of the above embodiments, and further has the beneficial effects of the fingerprint identification module, the fingerprint identification and touch sensing component, or the display component of any of the above embodiments, which are not repeated herein.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A fingerprint identification module for a terminal, comprising:
the sum of the distance between any two adjacent first sensing electrodes and the width of any one of the first sensing electrodes is a first channel period width W1; and
a plurality of first transmitting electrodes, wherein the sum of the distance between any two adjacent first transmitting electrodes and the width of any one first transmitting electrode is a second channel period width W2;
wherein the first channel period width W1 and/or the second channel period width W2 is/are in a range of 20 μm to 200 μm, the first sensing electrode and the first emitting electrode have an alignment tolerance, and a ratio of the alignment tolerance to the first channel period width W1 or the second channel period width W2 is greater than 0 and less than or equal to 1.
2. The fingerprint identification module of claim 1,
the first channel period width W1 and/or the second channel period width W2 ranges from 70 μm to 200 μm.
3. The fingerprint recognition module of claim 1 or 2,
the alignment tolerance of the first sensing electrode and the first transmitting electrode is less than or equal to 150 μm.
4. The fingerprint identification module of claim 1,
a ratio of the alignment tolerance to the first channel period width W1 or the second channel period width W2 is less than or equal to 0.1.
5. The utility model provides a fingerprint identification and touch-control response subassembly which characterized in that includes:
a touch sensing module; and
the fingerprint identification module of any one of claims 1 to 4.
6. The fingerprint recognition and touch-sensing assembly of claim 5,
the touch sensing module includes:
the sum of the distance between any two adjacent second sensing electrodes and the width of any one of the second sensing electrodes is a third channel period width W3; and
a plurality of second transmitting electrodes, wherein the sum of the distance between any two adjacent second transmitting electrodes and the width of any one of the second transmitting electrodes is a fourth channel period width W4;
wherein the third channel period width W3 and/or the fourth channel period width W4 ranges from 2mm to 6 mm.
7. The fingerprint recognition and touch-sensing assembly of claim 6,
the third channel period width W3 and/or the fourth channel period width W4 is 4.5 mm.
8. The fingerprint recognition and touch-sensing assembly of claim 6 or 7,
the alignment tolerance of the second sensing electrode and the second transmitting electrode is less than or equal to 150 μm, and the ratio of the alignment tolerance to the third channel period width W3 or the fourth channel period width W4 is less than or equal to 0.05.
9. The fingerprint recognition and touch-sensing assembly of claim 6 or 7,
the ratio of the first channel period width W1 to the third channel period width W3 ranges from 0.005 to 0.1, and/or the ratio of the second channel period width W2 to the fourth channel period width W4 ranges from 0.005 to 0.1.
10. The fingerprint recognition and touch-sensing assembly of claim 6 or 7, further comprising:
the first substrate, the first induction electrode and the second induction electrode are positioned on the same side of the first substrate;
and the first emission electrode and the second emission electrode are positioned on the same side of the second substrate.
11. A display assembly, comprising:
a display screen; and
the fingerprint identification module of any one of claims 1 to 4; or
The fingerprint identification and touch sensing assembly of any one of claims 5 to 10.
12. A terminal, comprising:
the fingerprint recognition and touch-sensing assembly of any one of claims 5 to 10; or
The display assembly of claim 11.
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