CN203352685U - Liquid crystal display television equipped with board-mounted isolator and board-mounted silicon Tuner - Google Patents
Liquid crystal display television equipped with board-mounted isolator and board-mounted silicon Tuner Download PDFInfo
- Publication number
- CN203352685U CN203352685U CN 201320329324 CN201320329324U CN203352685U CN 203352685 U CN203352685 U CN 203352685U CN 201320329324 CN201320329324 CN 201320329324 CN 201320329324 U CN201320329324 U CN 201320329324U CN 203352685 U CN203352685 U CN 203352685U
- Authority
- CN
- China
- Prior art keywords
- isolator
- board
- circuit
- silicon tuner
- liquid crystal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a liquid crystal display television equipped with a board-mounted isolator and a board-mounted silicon Tuner. The liquid crystal display television comprises a host core board, a liquid crystal display, a power supply module and a loudspeaker, and an isolator circuit and a silicon Tuner circuit which are connected together are integrated on the host core board. The isolator circuit insolates an earth terminal of an RF signal and an earth terminal of a television via a high voltage capacitor. The host core board is provided with a metal shielding case which covers the isolator circuit and the silicon Tuner circuit and is welded on the host core board. According to the liquid crystal display television equipped with the board-mounted isolator and the board-mounted silicon Tuner, the isolator and the silicon Tuner chip are both designed on the host core board, cost is reduced greatly, and meanwhile, processes for individually processing the Tuner and the isolator are saved, so production efficiency are raised greatly. In the aspect of appearance, an isolator box does not need to be mounted to an antenna terminal, and beauty of the television is ensured.
Description
Technical field
The utility model relates to the LCD TV field, relates in particular to a kind of plate and carries isolator and silicon Tuner(high-frequency tuner) LCD TV.
Background technology
Based on panel TV 3C authentication, safety standard GB8898-2001 on probation has been updated to GB8898-2011
In new standard, requiring should have quarantine measures between cable network antenna coaxial socket and protective circuit; at antenna (RF) input of TV, an isolator is installed, is eliminated TV images, the exchanging of sound accompaniment that may bring with the potential difference between cable television network because of electrical network and disturb even spontaneous combustion.At present isolator is all to make separately finished product to be inserted in the television antenna input, and tuner is also that the module form is used, and cost is higher, and production efficiency is lower, it is attractive in appearance to affect.
Summary of the invention
For addressing the above problem, the utility model provides a kind of plate to carry the LCD TV of isolator and silicon Tuner, comprise main frame central layer, LCDs, power module, loudspeaker, integrated isolator circuit and silicon Tuner circuit on described main frame central layer, the isolator circuit is connected with silicon Tuner circuit.Described isolator circuit is isolated the ground of the ground of RF signal and television set by high-voltage capacitance.The main frame central layer is provided with metal shielding box, and described metal shielding box covers isolator circuit and silicon Tuner circuit, and described metal shielding box is welded on the main frame central layer.
The utility model main frame central layer carries design by isolator and silicon Tuner chip while plate, greatly reduce cost, also save the operation of independent processing Tuner and isolator simultaneously, promoted greatly production efficiency, aspect outward appearance,, without in antenna end, the isolator box being installed, guaranteed the attractive in appearance of TV.
The accompanying drawing explanation
Fig. 1 version figure of the present utility model.
Embodiment
As shown in Figure 1: the utility model mainly is divided into four parts: plate carries main frame central layer, LCDs (image display), power module, the loudspeaker of isolator and silicon Tuner.
The utility model is integrated in TV main frame central layer by isolator circuit and silicon Tuner circuit, and the RF signal is as the input of isolator circuit, and the output of isolator circuit is as the input of silicon Tuner circuit.In order to reduce the interference of main frame central layer to buffer circuit and silicon Tuner circuit, be provided with a metal shielding box isolator circuit and silicon Tuner circuit are covered, described metal shielding box has been established four pin, and is welded on the main frame central layer.
Operation principle of the present utility model is: the RF wire signal gives that silicon carries out frequency conversion, filtering is processed after by buffer circuit, sending the medium-frequency IF signal is decoded to master chip, output LVDS signal demonstrates image to display screen, master chip simultaneously output audio signal to audio power amplifier original sound also.Buffer circuit is to carry out giving the rear end silicon by high-voltage capacitance to the RF signal after straight filtering, also the ground of RF signal (ground of cable TV network) and the ground of television set are isolated simultaneously, by typesetting, both are connected by electric capacity, to guarantee that television set can not cause because of the high potential difference between two ground the spontaneous combustion of television set.
Consider that it is the pressure standard that television set increases isolator, not only cost is high and affect efficiency and attractive in appearance to adopt the Tuner of current module mode and external isolator, the utility model main frame central layer upper plate carries isolator, without additional isolator equipment, guarantees image quality and the safety of TV; And isolator and silicon Tuner chip while plate carry design, greatly reduce cost, reduce device and the cost of labor of 3.5 yuans by a TV, produce 1000 ten thousand calculating per year, within 1 year, can save 3,500 ten thousand costs, also save the operation of independent processing Tuner and isolator simultaneously, promoted greatly production efficiency, aspect outward appearance,, without in antenna end, the isolator box being installed, guaranteed the attractive in appearance of TV.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (4)
1. the LCD TV that plate carries isolator and silicon Tuner, comprise main frame central layer, LCDs, power module, loudspeaker, it is characterized in that: integrated isolator circuit and silicon Tuner circuit on described main frame central layer, the isolator circuit is connected with silicon Tuner circuit.
2. the LCD TV that a kind of plate as claimed in claim 1 carries isolator and silicon Tuner is characterized in that: described isolator circuit is isolated the ground of the ground of RF signal and television set by high-voltage capacitance.
3. the LCD TV that a kind of plate as claimed in claim 1 carries isolator and silicon Tuner is characterized in that: the main frame central layer is provided with metal shielding box, and described metal shielding box covers isolator circuit and silicon Tuner circuit.
4. the LCD TV that a kind of plate as claimed in claim 3 carries isolator and silicon Tuner is characterized in that: described metal shielding box is welded on the main frame central layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320329324 CN203352685U (en) | 2013-06-08 | 2013-06-08 | Liquid crystal display television equipped with board-mounted isolator and board-mounted silicon Tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320329324 CN203352685U (en) | 2013-06-08 | 2013-06-08 | Liquid crystal display television equipped with board-mounted isolator and board-mounted silicon Tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203352685U true CN203352685U (en) | 2013-12-18 |
Family
ID=49752529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320329324 Expired - Lifetime CN203352685U (en) | 2013-06-08 | 2013-06-08 | Liquid crystal display television equipped with board-mounted isolator and board-mounted silicon Tuner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203352685U (en) |
-
2013
- 2013-06-08 CN CN 201320329324 patent/CN203352685U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |