CN207182322U - Ultrasonic sensor and electronic installation - Google Patents
Ultrasonic sensor and electronic installation Download PDFInfo
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- CN207182322U CN207182322U CN201721167412.XU CN201721167412U CN207182322U CN 207182322 U CN207182322 U CN 207182322U CN 201721167412 U CN201721167412 U CN 201721167412U CN 207182322 U CN207182322 U CN 207182322U
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Abstract
Ultrasonic sensor disclosed in the utility model includes base material, multiple pixel electrodes, piezoelectric patches, conductive electrode and process chip.Multiple pixel electrodes are produced on base material and are in array distribution.Piezoelectric patches is arranged on base material and covers multiple pixel electrodes, and piezoelectric patches is used to launch ultrasonic wave and electric signal is produced after the ultrasonic wave of thing reflection to be detected is received, and multiple pixel electrodes are used to receive electric signal.Conductive electrode is arranged on piezoelectric patches, and piezoelectric patches is between pixel electrode and conductive electrode.Process chip is connected with multiple pixel electrodes, and process chip is used to handle electric signal to form the ultrasonograph of thing to be detected.Because each pixel electrode can determine that finger is pressed against the position on ultrasonic sensor and the piezoelectric patches caused electric signal on the position according to the electric signal received, so as to the recognition efficiency for reducing process chip need data volume to be processed, improving ultrasonic sensor.The invention also discloses a kind of electronic installation.
Description
Technical field
Fingerprint identification technology field is the utility model is related to, more particularly to a kind of ultrasonic sensor and electronic installation.
Background technology
The emission electrode of existing ultrasonic sensor and receiving electrode typically in crisscross structure, when it needs to be determined that
Need emission electrode and receiving electrode to confirm jointly during the position of certain point, thus ultrasonic sensor Comparision it is complicated and
Data to be processed are also more complicated needed for ultrasonic sensor, and then influence the recognition efficiency of ultrasonic sensor.
Utility model content
Embodiment of the present utility model provides a kind of ultrasonic sensor and electronic installation.
The ultrasonic sensor of the utility model embodiment includes：
Base material；
Multiple pixel electrodes, multiple pixel electrodes make on the substrate and be in array distribution；
Piezoelectric patches, the piezoelectric patches are set on the substrate and cover multiple pixel electrodes, and the piezoelectric patches is used
Electric signal is produced in transmitting ultrasonic wave and after the ultrasonic wave of thing reflection to be detected is received, multiple pixel electrodes are for connecing
Receive the electric signal；
Conductive electrode, the conductive electrode are arranged on the piezoelectric patches, the piezoelectric patches be located at the pixel electrode with
Between the conductive electrode；And
The process chip being connected with multiple pixel electrodes, the process chip are used to handle the electric signal to be formed
The ultrasonograph of the thing to be detected.
Multiple pixel electrodes in the ultrasonic sensor of the utility model embodiment are produced on base material, so can be with
Pixel electrode is set to be located at from thing closer proximity to be detected, while multiple pixel electrodes can increase area to be detected in array distribution
Domain area improves detection sensitivity.Each pixel electrode of ultrasonic sensor can determine finger according to the electric signal received
The position being pressed against on ultrasonic sensor and the piezoelectric patches caused electric signal on the position, needed so as to reduce process chip
Data volume to be processed, the recognition efficiency for improving ultrasonic sensor；On the other hand, because piezoelectric patches is in overall sheet knot
Structure (i.e. layer structure), so as to piezoelectric patches easy to manufacture and cost of manufacture is relatively low.
In some embodiments, on the base material formed with multiple image element circuits in array distribution and with it is multiple described
A plurality of wire corresponding to image element circuit, multiple image element circuits are corresponding with multiple pixel electrodes, each pixel electricity
Road connects with the corresponding pixel electrode, and the every wire is used to connect the corresponding image element circuit and the processing core
Piece.Present embodiment is easy to pixel electrode to be electrically connected with process chip by setting image element circuit and wire.
In some embodiments, the ultrasonic sensor also includes：
Connection electrode, the connection electrode be arranged on the side of remote multiple pixel electrodes of the base material and with institute
State process chip connection；And
Lead, the pixel electrode are connected to the connection electrode by the lead, and the conductive electrode passes through described
Lead is connected to the connection electrode.Present embodiment is easy to pixel electrode and conduction electricity by setting lead and connection electrode
Pole respectively with circuit board electrical connection.
In some embodiments, the conductive electrode is overall layer structure.In this way, it is easy to process chip control to lead
The power on/off of electrode, while make conductive electrode easy to manufacture and cost of manufacture is relatively low.
In some embodiments, the conductive electrode includes layer structure and prolonged respectively from the both ends of layered structure
The extended structure stretched, layered structure wrap the piezoelectric patches jointly with the extended structure.In this way, extended by setting
Structure is easy to process chip to be electrically connected with conductive electrode.
In some embodiments, the conductive electrode includes multiple spaced list structures, each list structure
The conductive electrode it is corresponding with the pixel electrode in a row or column.The conductive electrode pair of pixel electrode and list structure
Should be easy to pixel electrode and conductive electrode apply on piezoelectric patches high frequency voltage (such as：Frequency is more than 20KHZ voltage), simultaneously
Being easy to pixel electrode and conductive electrode, the caused electric signal under piezo-electric effect is delivered in other elements by piezoelectric patches.Relative to
The conductive electrode of layer structure, the conductive electrode of list structure are more convenient for the signal input of process chip control conductive electrode and defeated
Go out, so as to improve the precision of ultrasonic sensor identification fingerprint.
In some embodiments, the material of the conductive electrode is tin indium oxide, nano-silver thread, metal grill, nanometer
Any one in carbon pipe and graphene.In this way, conductive electrode has preferable toughness and printing opacity made of above-mentioned material
Property, so as to which ultrasonic sensor has preferable toughness made of the conductive electrode；When ultrasonic sensor is arranged on display
During the lower section of screen, the ultrasonic sensor with preferable translucency will not block the display of display screen, while be arranged on display
The ultrasonic sensor of screen lower section can keep the integral color of display screen consistent and make display screen more attractive in appearance.
In some embodiments, the light transmittance of the conductive electrode is more than 90%.In this way, when ultrasonic sensor is set
At the lower section of display screen, the ultrasonic sensor with preferable translucency will not block the display of display screen, set simultaneously
Ultrasonic sensor below display screen can keep the integral color of display screen consistent and make display screen more attractive in appearance.
In some embodiments, the material of the base material is glass or Kapton.In this way, the cost of base material compared with
It is low, translucency is preferable, the cost of ultrasonic sensor is relatively low made of the base material；When ultrasonic sensor is arranged on display screen
Lower section when, the ultrasonic sensor with preferable translucency will not block the display of display screen, while be arranged on display screen
The ultrasonic sensor of lower section can keep the integral color of display screen consistent and make display screen more attractive in appearance.
In some embodiments, the material of the pixel electrode is tin indium oxide, nano-silver thread, metal grill, nanometer
Any one in carbon pipe and graphene.In this way, pixel electrode has preferable toughness and printing opacity made of above-mentioned material
Property, so as to which ultrasonic sensor has preferable toughness made of the pixel electrode；When ultrasonic sensor is arranged on display
During the lower section of screen, the ultrasonic sensor with preferable translucency will not block the display of display screen, while be arranged on display
The ultrasonic sensor of screen lower section can keep the integral color of display screen consistent and make display screen more attractive in appearance.
In some embodiments, the ultrasonic sensor also includes circuit board, multiple pixel electrodes, described leads
Electrode and the process chip are electrically connected with the circuit board.In this way, it is easy to ultrasonic sensor to pass through on circuit board
Connector electrically connected with other electronic components.
The electronic installation of the utility model embodiment includes：
Housing；
Ultrasonic sensor described in above-mentioned any one embodiment, the ultrasonic sensor are arranged on the housing
Above or it is housed in the housing.
The electronic installation of the utility model embodiment and each pixel electrode of ultrasonic sensor can be according to receptions
To electric signal determine that finger is pressed against the position on ultrasonic sensor and the piezoelectric patches caused electric signal on the position, from
And reduce process chip need data volume to be processed, improve the recognition efficiency of ultrasonic sensor；On the other hand, due to pressure
Electric piece is in overall laminated structure, and so as to piezoelectric patches easy to manufacture and cost of manufacture is relatively low.
In some embodiments, the electronic installation also includes display screen, and the ultrasonic sensor is arranged on described
When in housing, the ultrasonic sensor is corresponding with the display screen.In this way, ultrasonic sensor is arranged in housing, make to surpass
Sonic sensor is not take up the area of display screen, so as to improve the screen accounting of electronic installation.
In some embodiments, the electronic installation also includes display screen, bonnet and side frame, the display screen and institute
The opposite both sides that bonnet is located at the electronic installation are stated, the side frame connects the display screen and the bonnet, the ultrasound
Wave sensor is arranged in the housing and covered on the side frame or after described.So, on the one hand, supersonic sensing
Device is arranged in housing, ultrasonic sensor is not take up the area of display screen, so as to improve the screen accounting of electronic installation；Separately
On the one hand, ultrasonic sensor can be fabricated to side fingerprint recognition module or back side fingerprint recognition module, there is provided more various
The Consumer's Experience of change.
The additional aspect and advantage of embodiment of the present utility model will be set forth in part in the description, partly will be from
Become obvious in following description, or recognized by the practice of embodiment of the present utility model.
Brief description of the drawings
In description of the of the present utility model above-mentioned and/or additional aspect and advantage from combination accompanying drawings below to embodiment
It will be apparent and be readily appreciated that, wherein：
Fig. 1 is the sectional view of the ultrasonic sensor of some embodiments of the utility model；
Fig. 2 is the decomposing schematic representation of the ultrasonic sensor of some embodiments of the utility model；
Fig. 3 is the sectional view of the ultrasonic sensor of some embodiments of the utility model；
Fig. 4 is the decomposing schematic representation of the ultrasonic sensor of some embodiments of the utility model；
Fig. 5 is the floor map of the electronic installation of some embodiments of the utility model；
Fig. 6 is the floor map of the electronic installation of some embodiments of the utility model；
Fig. 7 is the decomposing schematic representation of the ultrasonic sensor of some embodiments of the utility model；
Fig. 8 is the sectional view of the ultrasonic sensor of some embodiments of the utility model；
Fig. 9 is the sectional view of the ultrasonic sensor of some embodiments of the utility model；With
Figure 10 is the sectional view of the ultrasonic sensor of some embodiments of the utility model.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein
Same or similar label represents same or similar element or the element with same or like function from beginning to end.Lead to below
It is exemplary to cross the embodiment being described with reference to the drawings, and is only used for explaining the utility model, and it is not intended that to this practicality
New limitation.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ",
The orientation or position relationship of the instructions such as " clockwise ", " counterclockwise " be based on orientation shown in the drawings or position relationship, be only for
Be easy to describe the utility model and simplify to describe, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " first ",
" second " is only used for describing purpose, and it is not intended that indicating or implying relative importance or imply the technology indicated by indicating
The quantity of feature.Thus, " first " is defined, the feature of " second " can be expressed or implicitly include one or more
The feature.In description of the present utility model, " multiple " are meant that two or more, unless otherwise clearly specific
Limit.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；It can be mechanical connection or electrical connection or can mutually communicate；Can be joined directly together, can also be in
Between medium be indirectly connected, can be connection or the interaction relationship of two elements of two element internals.For this area
For those of ordinary skill, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it
" under " can directly be contacted including the first and second features, it is not directly to contact but lead to that can also include the first and second features
The other characterisation contact crossed between them.Moreover, fisrt feature second feature " on ", " top " and " above " include the
One feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " including fisrt feature immediately below second feature and obliquely downward, or only
Represent that fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing different structure of the present utility model.
In order to simplify disclosure of the present utility model, hereinafter the part and setting of specific examples are described.Certainly, they are only
Example, and purpose does not lie in limitation the utility model.In addition, the utility model can in different examples repeat reference numerals
And/or reference letter, this repetition are for purposes of simplicity and clarity, itself not indicate discussed various embodiments
And/or the relation between setting.In addition, various specific techniques and the example of material that the utility model provides, but this
Field those of ordinary skill can be appreciated that the application of other techniques and/or the use of other materials.
Also referring to Fig. 1 and Fig. 2, the ultrasonic sensor 100 of the utility model embodiment includes base material 10, multiple
Pixel electrode 20, piezoelectric patches 30, conductive electrode 40 and process chip 50.Multiple pixel electrodes 20 are produced on base material 10 and are in battle array
Column distribution.Piezoelectric patches 30 is arranged on base material 10 and covers multiple pixel electrodes 20, piezoelectric patches 30 be used for launch ultrasonic wave and
Electric signal is produced after receiving the ultrasonic wave of thing reflection to be detected, multiple pixel electrodes 20 are used to receive the electric signal.Conductive electricity
Pole 40 is arranged on piezoelectric patches 30, and piezoelectric patches 30 is between pixel electrode 20 and conductive electrode 40.Process chip 50 with it is multiple
Pixel electrode 20 connects, and process chip 50 is used to handle the electric signal to form the ultrasonograph of thing to be detected.
Fig. 1 and Fig. 3 is referred to, thing to be detected can be finger, test template etc..Pixel electrode 20 is close on base material 10
The acquisition precision positive correlation of degree and ultrasonic sensor 100, the density of the pixel electrode 20 of present embodiment can make ultrasonic wave
Sensor 100 detects the fingermark image of thing to be detected.Piezoelectric patches 30 is laminated structure overall made of piezoelectric.It is conductive
Electrode 40 can be that overall layer structure (as shown in Figures 1 and 2) can also be leading for spaced multiple list structures
Electrode 40 (as shown in Figures 3 and 4).Process chip 50 can be also used for controlling the break-make of conductive electrode 40 and pixel electrode 20
Electricity.When process chip 50 controls conductive electrode 40 to be powered with pixel electrode 20 so that conductive electrode 40 on pixel electrode 20 with applying
Have high frequency voltage (such as：Frequency is more than 20KHZ voltage) when, wherein conductive electrode 40 applies high frequency voltage and pixel electrode 20
Ground connection, piezoelectric patches 30 produce ultrasonic wave in the presence of high frequency voltage and outwards launch ultrasonic wave；If finger is placed on ultrasonic wave
In sensing 100, then finger can reflect the ultrasonic wave of the transmitting of piezoelectric patches 30 and transmit back to piezoelectric patches 30, refer to due to existing on finger
Line, thus the finger reflectance ultrasound ripple that each position receives on piezoelectric patches 30 is incomplete same, so as to 30 each position of piezoelectric patches
It is also incomplete same to put the caused electric signal (or piezoelectric signal) under ul-trasonic irradiation, on piezoelectric patches 30 caused by each position
Electric signal can be collectively forming the fingerprint pattern of finger；Process chip 50 controls multiple pixel electrodes 20 to receive each of piezoelectric patches 30
The electric signal is delivered in process chip 50 by the electric signal caused by individual position, multiple pixel electrodes 20, process chip 50
The electric signal is handled to form the ultrasonograph of thing to be detected (fingerprint pattern for including finger).
Multiple pixel electrodes 20 in the ultrasonic sensor 100 of the utility model embodiment are produced on base material 10,
Pixel electrode 20 can so be located at from thing closer proximity to be detected, while multiple pixel electrodes 20 can be with array distribution
Increase region area to be detected and improve detection sensitivity.Each picture of the ultrasonic sensor 100 of the utility model embodiment
Plain electrode 20 can determine the position and piezoelectric patches 30 that finger is pressed against on ultrasonic sensor 100 according to the electric signal received
The caused electric signal on the position, so as to reduce the need of process chip 50 data volume to be processed, improve supersonic sensing
The recognition efficiency of device 100；On the other hand, because piezoelectric patches 30 is in overall laminated structure, the easy to manufacture of piezoelectric patches 30 and make
It is relatively low to make cost.
Referring to Fig. 5, the electronic installation 200 of the utility model embodiment includes housing 202 and the utility model is any
The ultrasonic sensor 100 of one embodiment.Ultrasonic sensor 100 can be arranged on housing 202.
Referring to Fig. 6, in other embodiments, ultrasonic sensor 100 can also be arranged in housing 202.For example,
Electronic installation 200 also includes display screen 201, ultrasonic sensor 100 be located at the lower section of display screen 201 and with display screen 201
Viewing area is corresponding.In this way, ultrasonic sensor 100 is arranged in housing 202, ultrasonic sensor 100 is set to be not take up showing
The area of screen 201, so as to improve the screen accounting of electronic installation 200.
Please continue to refer to Fig. 6, in some embodiments, electronic installation 200 also includes bonnet (not shown) and side frame
203, display screen 201 is located at bonnet on the opposite both sides of electronic installation 200, and side frame 203 connects display screen 201 and bonnet,
Ultrasonic sensor 100 is arranged in housing 202 and is located on side frame 203 or is arranged in housing 202 and is covered after being located at.
So, on the one hand, ultrasonic sensor 100 is arranged in housing 202, ultrasonic sensor 100 is not take up display screen 201
Area, so as to improve the screen accounting of electronic installation 200；On the other hand, ultrasonic sensor 100 can be fabricated to side fingerprint
Identify module or back side fingerprint recognition module, there is provided more diversified Consumer's Experience.Electronic installation 200 includes mobile phone, flat board
Appointing in the devices such as computer, Intelligent bracelet, intelligent helmet, intelligent watch, remote control, automatic navigator, e-book, lock, gate inhibition
Meaning is a kind of.
Referring to Fig. 1 and Fig. 2, the ultrasonic sensor 100 of the utility model embodiment includes base material 10, multiple
Pixel electrode 20, piezoelectric patches 30, the process chip 50 of conductive electrode 40.
The material of base material 10 is glass or Kapton.Base material 10 can with rectangular, circular, oval, triangle,
The laminated structure of polygon.
Multiple pixel electrodes 20 are produced on base material 10 and are in array distribution, that is to say, that multiple pixel electrodes 20 include
The pixel electrode 20 and the spaced pixel electrode 20 of multiple row that higher order interlace is set.The material of pixel electrode 20 is tin indium oxide
(Indium tin oxide, ITO), nano-silver thread (Agnanowire), metal grill (metal mesh), CNT and
Any one in graphene (Graphene), pixel electrode 20 has preferable toughness and printing opacity made of above-mentioned material
Property, so as to which ultrasonic sensor 100 has preferable toughness and translucency made of the pixel electrode 20；Work as supersonic sensing
When device 100 is arranged on the lower section of display screen 201, the ultrasonic sensor 100 with preferable translucency will not block display screen
201 display, while the ultrasonic sensor 100 for being arranged on the lower section of display screen 201 can keep the integral color of display screen 201
Unanimously make display screen 201 more attractive in appearance.In some embodiments, the light transmittance of pixel electrode 20 is more than 90%, works as ultrasound
When wave sensor 100 is arranged on the lower section of display screen 201, the ultrasonic sensor 100 with preferable translucency will not block
The viewing area of display screen 201, while the ultrasonic sensor 100 for being arranged on the lower section of display screen 201 can keep display screen 201
Integral color is consistent and makes display screen 201 more attractive in appearance.Pixel electrode 20 can be used for receiving electric signal, each energy of pixel electrode 20
Enough positions that ultrasonic sensor 100 is determined according to the electric signal received, density of the pixel electrode 20 on base material 10
With the acquisition precision positive correlation of ultrasonic sensor 100, the density of pixel electrode 20 of the present utility model can pass ultrasonic wave
Sensor 100 detects the fingermark image of thing to be detected.
Piezoelectric patches 30 is arranged on base material 10 and covers multiple pixel electrodes 20.Piezoelectric patches 30 is whole made of piezoelectric
The laminated structure of body, the shape and the shape of base material 10 of piezoelectric patches 30 match.The material of piezoelectric patches 30 can be piezoelectric ceramics
Or Kynoar (Polyvinylidene fluoride, PVDF), when the material of piezoelectric patches 30 is Kynoar, pressure
Electric piece 30 has preferable pliability, and now the pliability of ultrasonic sensor 100 is also preferable.Piezoelectric patches 30 is in high frequency voltage
(such as：Frequency is more than 20KHZ voltage) act on and descend to produce and launch ultrasonic wave to the light emission direction of display screen 90.Work as pressure
After electric piece 30 receives the ultrasonic wave of thing to be detected reflection, piezoelectric patches 30 can produce electric signal (or piezoelectricity under ul-trasonic irradiation
Signal), thing to be detected can be finger, test template etc..
Conductive electrode 40 is arranged on the side of the remote pixel electrode 20 of piezoelectric patches 30, that is to say, that piezoelectric patches 30 is located at
Between pixel electrode 20 and conductive electrode 40.The layer structure overall made of conductive material of conductive electrode 40, conductive electrode
40 shape and the shape of piezoelectric patches 30 match.The material of conductive electrode 40 be tin indium oxide, nano-silver thread, metal grill,
Any one in CNT and graphene.In some embodiments, the light transmittance of conductive electrode 40 is more than 90%.Lead
Electrode 40 can apply high frequency voltage after leading to high frequency voltage with pixel electrode 20 to piezoelectric patches 30, so that piezoelectric patches 30 produces
Ultrasonic wave.Conductive electrode 40 can also receive electric signal caused by piezoelectric patches 30 with pixel electrode 20.
Process chip 50 is all connected with multiple pixel electrodes 20 and conductive electrode 40.Process chip 50 can be used for control and lead
The power on/off of electrode 40 and pixel electrode 20.For example, process chip 50 can control conductive electrode 40 to connect high frequency voltage simultaneously
Control pixel electrode 20 is grounded, so that piezoelectric patches 30 is applied in high frequency voltage, so that piezoelectric patches 30 produces and outwards transmitting surpasses
Sound wave.The also controllable pixels electrode 20 and conductive electrode 40 of process chip 50 transmits piezoelectric signal caused by piezoelectric patches 30 everywhere
Manage on chip 50.Process chip 50 is additionally operable to handle electric signal caused by piezoelectric patches 30 to form the ultrasonic wave shadow of thing to be detected
Picture.Process chip 50 can be arranged on base material 10 and can also be arranged on outside base material 10.
When process chip 50 controls conductive electrode 40 to be powered with pixel electrode 20 so that conductive electrode 40 and pixel electrode 20
On be applied with high frequency voltage (such as：Frequency is more than 20KHZ voltage) when, piezoelectric patches 30 produces super in the presence of high frequency voltage
Sound wave simultaneously outwards launches ultrasonic wave；If finger is placed on ultrasonic sensor 100, finger can reflect the transmitting of piezoelectric patches 30
Ultrasonic wave is simultaneously transmitted back to piezoelectric patches 30, due to fingerprint, thus the hand that each position receives on piezoelectric patches 30 on finger be present
Digital reflex ultrasonic wave is incomplete same, so as to 30 each position of piezoelectric patches under ul-trasonic irradiation caused electric signal (or piezoelectricity
Signal) it is also incomplete same, electric signal can be collectively forming the fingerprint pattern of finger caused by each position on piezoelectric patches 30；Place
Reason chip 50 controls multiple pixel electrodes 20 to receive the electric signal caused by each position of piezoelectric patches 30, multiple pixel electrodes
20 are delivered to the electric signal in process chip 50, and process chip 50 handles the electric signal to form the fingerprint pattern of finger.
Each pixel electrode 20 of the ultrasonic sensor 100 of the utility model embodiment can be according to the electricity received
Signal determines position and the piezoelectric patches 30 caused electric signal on the position that finger is pressed against on ultrasonic sensor 100, from
And reduce the need of process chip 50 data volume to be processed, improve the recognition efficiency of ultrasonic sensor 100；On the other hand,
Because piezoelectric patches 30 is in overall laminated structure, so as to the easy to manufacture of piezoelectric patches 30 and cost of manufacture is relatively low.
The ultrasonic sensor 100 of the utility model embodiment also has the advantages that：First, multiple pixel electricity
Pole 20 is formed on base material 10, is easy to make the higher pixel electrode 20 of precision, is referred to so as to lift the identification of ultrasonic sensor 100
The precision of line.
Second, the light transmittance of pixel electrode 20 and conductive electrode 40 is all higher than 90%, when ultrasonic sensor 100 is arranged on
During the lower section of display screen 201, the ultrasonic sensor 100 with preferable translucency will not block the display of display screen 201, together
When be arranged on the ultrasonic sensor 100 of the lower section of display screen 201 integral color of display screen 201 can be kept consistent and make display
Screen 201 is more attractive in appearance.
3rd, conductive electrode 40 is in overall laminated structure, is easy to process chip 50 to control the power on/off of conductive electrode 40,
Make the easy to manufacture of conductive electrode 40 simultaneously and cost of manufacture is relatively low.
4th, the material of pixel electrode 20 and conductive electrode 40 is tin indium oxide, nano-silver thread, metal grill, nanometer
Any one in carbon pipe and graphene, pixel electrode 20 and conductive electrode 40 are respectively provided with preferably made of above-mentioned material
Toughness and translucency, so that ultrasonic sensor 100 is with preferably tough made of the pixel electrode 20 and conductive electrode 40
Property；When ultrasonic sensor 100 is arranged on the lower section of display screen 201, there is the ultrasonic sensor 100 of preferable translucency
The display of display screen 201 will not be blocked, while the ultrasonic sensor 100 for being arranged on the lower section of display screen 201 can keep showing
The integral color of screen 201 is consistent and makes display screen 201 more attractive in appearance.
5th, ultrasonic sensor 100 is arranged in housing 202, ultrasonic sensor 100 is not take up display screen 201
Area, so as to improve the screen accounting of electronic installation 200.
Referring to Fig. 7, in some embodiments, on base material 10 formed with multiple image element circuits 12 in array distribution and
A plurality of wire 14 corresponding with multiple image element circuits 12, multiple image element circuits 12 are corresponding with multiple pixel electrodes 20, each pixel
Circuit 12 connects with corresponding pixel electrode 20, and every wire 14 is used to connect corresponding image element circuit 12 and process chip 50.
Image element circuit 12 is arranged between base material 10 and pixel electrode 20, wire 14 can be arranged on base material 10 with image element circuit 12
On the same side (as shown in Figure 7).In this way, being easy to the making of image element circuit 12 and wire 14, and it is easy to pixel electrode 20 and processing
Chip 50 connects.In other embodiments, wire 14 can also be arranged on base material 10 with image element circuit 12 opposite side
On.
Referring to Fig. 8, in some embodiments, the ultrasonic sensor 100 of above-mentioned embodiment also includes connection electricity
Pole 60 and lead 70.Connection electrode 60 is arranged on the side of remote multiple pixel electrodes 20 of base material 10 and connected with process chip 50
Connect.Pixel electrode 20 is connected to connection electrode 60 by lead 70, and conductive electrode 40 is connected to connection electrode 60 by lead 70.
Lead 70 includes a plurality of pixel electrode lead 72 that is connected with pixel electrode 20, every pixel electrode lead 72 respectively with a picture
Plain electrode 20 connects.Lead 70 also includes the conductive electrode lead 74 of connection corresponding with conductive electrode 40, when conductive electrode 40 is
During the layer structure of entirety, conductive electrode lead 74 is one；When conductive electrode 40 is a plurality of spaced list structure
During conductive electrode 40, the quantity of conductive electrode lead 74 is consistent with the quantity of the conductive electrode 40 of list structure.Present embodiment
By setting lead 70 and connection electrode 60, it is easy to pixel electrode 20 to be electrically connected respectively with process chip 50 with conductive electrode 40.
Referring to Fig. 9, in some embodiments, the conductive electrode 40 of above-mentioned embodiment include layer structure 42 and from
The extended structure 44 that the both ends of layer structure 42 each extend over, layer structure 42 wrap piezoelectric patches jointly with extended structure 44
30.Extended structure 44 can be that the edge of layer structure 42 integrally stretches out to be formed, and extended structure 44 can be layer structure
The part at 42 edge stretches out to be formed.Process chip 50 is electrically connected by extended structure 44 with conductive electrode 40.In this way,
By setting extended structure 44 to be easy to process chip 50 to be electrically connected with conductive electrode 40.
Fig. 3 and Fig. 4 is referred to, in some embodiments, the conductive electrode 40 of above-mentioned embodiment includes multiple intervals
The conductive electrode 40 of the list structure of setting, the conductive electrode 40 of each list structure and the pixel electrode 20 in same row are right
Should.In other embodiments, the conductive electrode 40 of each list structure is corresponding with the pixel electrode 20 in same a line.Pixel electricity
Pole 20 is corresponding with the conductive electrode 40 of list structure to be easy to pixel electrode 20 to apply high frequency on piezoelectric patches 30 with conductive electrode 40
Voltage (such as：Frequency is more than 20KHZ voltage), while it is easy to pixel electrode 20 and conductive electrode 40 to be used to exist piezoelectric patches 30
Caused electric signal is delivered in other elements under piezo-electric effect.Relative to the conductive electrode 40 of layer structure, list structure
Conductive electrode 40 be more convenient for process chip 50 control conductive electrode 40 signal input and output, so as to improve supersonic sensing
Device 100 identifies the precision of fingerprint.
Referring to Fig. 10, in some embodiments, the ultrasonic sensor 100 of above-mentioned embodiment also includes circuit board
80, multiple pixel electrodes 20, conductive electrode 40 and process chip 50 are electrically connected with circuit board 80.Process chip 50 can be with
It is arranged on circuit board 80.Specifically, circuit board 80 can be flexible PCB, and circuit board 80 can be arranged on the remote of base material 10
On side from pixel electrode 20.Circuit board 80 is provided with connector in order to which ultrasonic sensor 100 passes through on circuit board 80
Connector electrically connected with other electronic components.
It should be noted that the making in " multiple pixel electrodes 20 are produced on base material 10 " mentioned in the utility model
Including pixel electrode 20 is directly made by techniques such as plated film, light blockage coating/development/exposure, etching, removal photoresistance, annealing
On base material 10.
In the description of this specification, reference term " some embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " etc. means with reference to the embodiment party
Formula or example description specific features, structure, material or feature be contained at least one embodiment of the present utility model or
In example.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.And
And specific features, structure, material or the feature of description can close in any one or more embodiments or example
Suitable mode combines.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one feature.In description of the present utility model, " multiple " are meant that at least two, such as two
It is individual, three etc., unless otherwise specifically defined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-mentioned embodiment party
Formula is exemplary, it is impossible to is interpreted as to limitation of the present utility model, one of ordinary skill in the art is of the present utility model
In the range of above-mentioned embodiment can be changed, change, replace and modification, the scope of the utility model by claim and
Its equivalent limits.
Claims (10)
- A kind of 1. ultrasonic sensor, it is characterised in that including：Base material；Multiple pixel electrodes, multiple pixel electrodes make on the substrate and be in array distribution；Piezoelectric patches, the piezoelectric patches set on the substrate and cover multiple pixel electrodes, and the piezoelectric patches is used to send out Penetrate ultrasonic wave and electric signal is produced after the ultrasonic wave of thing reflection to be detected is received, multiple pixel electrodes are used to receive institute State electric signal；Conductive electrode, the conductive electrode are arranged on the piezoelectric patches, the piezoelectric patches be located at the pixel electrode with it is described Between conductive electrode；AndThe process chip being connected with multiple pixel electrodes, the process chip are described to be formed for handling the electric signal The ultrasonograph of thing to be detected.
- 2. ultrasonic sensor according to claim 1, it is characterised in that formed with array distribution on the base material Multiple image element circuits and a plurality of wire corresponding with multiple image element circuits, multiple image element circuits and multiple pixels Electrode pair is answered, and each image element circuit and the corresponding pixel electrode connect, and the every wire is corresponding for connecting The image element circuit and the process chip.
- 3. ultrasonic sensor according to claim 1, it is characterised in that the ultrasonic sensor also includes：Connection electrode, the connection electrode be arranged on the side of remote multiple pixel electrodes of the base material and with the place Manage chip connection；AndLead, the pixel electrode are connected to the connection electrode by the lead, and the conductive electrode passes through the lead It is connected to the connection electrode.
- 4. ultrasonic sensor according to claim 1, it is characterised in that the conductive electrode is overall stratiform knot Structure；OrThe conductive electrode includes layer structure and the extended structure each extended over from the both ends of layered structure, layered Structure wraps the piezoelectric patches jointly with the extended structure；OrThe conductive electrode includes multiple spaced list structures, the conductive electrode of each list structure and a line or The pixel electrode on one row is corresponding.
- 5. ultrasonic sensor according to claim 1, it is characterised in that the material of the conductive electrode is indium oxide Any one in tin, nano-silver thread, metal grill, CNT and graphene；The material of the base material is glass or gathered Imide membrane；The material of the pixel electrode is tin indium oxide, nano-silver thread, metal grill, CNT and graphene In any one.
- 6. ultrasonic sensor according to claim 1, it is characterised in that the light transmittance of the conductive electrode is more than 90%.
- 7. ultrasonic sensor according to claim 1, it is characterised in that the ultrasonic sensor also includes circuit Plate, multiple pixel electrodes, the conductive electrode and the process chip are electrically connected with the circuit board.
- 8. a kind of electronic installation, it is characterised in that the electronic installation includes：Housing；Ultrasonic sensor described in claim 1-7 any one, the ultrasonic sensor set on the housing or It is housed in the housing.
- 9. electronic installation according to claim 8, it is characterised in that the electronic installation also includes display screen, described super When sonic sensor is arranged in the housing, the ultrasonic sensor is corresponding with the display screen.
- 10. electronic installation according to claim 8, it is characterised in that the electronic installation also include display screen, bonnet and Side frame, the display screen are located at the opposite both sides of the electronic installation with the bonnet, and the side frame connects the display Screen and the bonnet, the ultrasonic sensor are arranged in the housing and covered on the side frame or after described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721167412.XU CN207182322U (en) | 2017-09-12 | 2017-09-12 | Ultrasonic sensor and electronic installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721167412.XU CN207182322U (en) | 2017-09-12 | 2017-09-12 | Ultrasonic sensor and electronic installation |
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| Publication Number | Publication Date |
|---|---|
| CN207182322U true CN207182322U (en) | 2018-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721167412.XU Active CN207182322U (en) | 2017-09-12 | 2017-09-12 | Ultrasonic sensor and electronic installation |
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| Country | Link |
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| CN (1) | CN207182322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266854A (en) * | 2019-06-28 | 2019-09-20 | Oppo广东移动通信有限公司 | The control method of electronic equipment and its camera |
-
2017
- 2017-09-12 CN CN201721167412.XU patent/CN207182322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266854A (en) * | 2019-06-28 | 2019-09-20 | Oppo广东移动通信有限公司 | The control method of electronic equipment and its camera |
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Address after: 330013 No.699 Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: Jiangxi OMS Microelectronics Co.,Ltd. Address before: 330013 east of Xueyuan 6th Road, south of Tianxiang Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee before: OFilm Microelectronics Technology Co.,Ltd. Address after: 330013 east of Xueyuan 6th Road, south of Tianxiang Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: OFilm Microelectronics Technology Co.,Ltd. Address before: 330013 No.698 Tianxiang Avenue, high tech Zone, Nanchang City, Jiangxi Province Patentee before: NANCHANG OFILM BIO-IDENTIFICATION TECHNOLOGY Co.,Ltd. |
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