CN203376955U - Automatic test equipment for liquid crystal display panel driving circuit board - Google Patents
Automatic test equipment for liquid crystal display panel driving circuit board Download PDFInfo
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- CN203376955U CN203376955U CN201320464426.3U CN201320464426U CN203376955U CN 203376955 U CN203376955 U CN 203376955U CN 201320464426 U CN201320464426 U CN 201320464426U CN 203376955 U CN203376955 U CN 203376955U
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Abstract
The utility model relates to the field of electronic equipment automatic testing, and particularly relates to automatic test equipment for a liquid crystal display panel driving circuit board. The automatic test equipment comprises a driving circuit board, a digital signal detection module and/or a mini-LVDS signal decoding circuit, the digital signal detection module comprises a digital signal threshold detection circuit, a digital signal logic detection circuit and a USB interface which are connected with each other in sequence; the mini-LVDS signal decoding circuit comprises a mini-LVDS driver, a programmable device, a DVI transmitter, a DVI driver, a DVI socket and a memory which are connected with each other in sequence, the DVI socket is externally connected with a computer through a data cable, and the programmable device is further connected with the memory. The automatic test equipment provided by the utility model can detect the performance and the quality of the driving circuit board without a need of assembling the driving circuit board into a complete appliance, thereby reducing the loss of other assemblies, and saving the test material cost.
Description
Technical field
The utility model relates to electronic equipment automatic test field, is a kind of ATE (automatic test equipment) of liquid crystal panel drive circuit plate specifically.
Background technology
Liquid crystal display partly is comprised of liquid crystal panel, drive circuit board, backlight, power supply, interface etc. usually.Wherein drive circuit board, mainly by high integration IC, is produced in a large number by SMT technique paster, and with accurate connectors such as FPC winding displacement, LVDS cables, assembles between liquid crystal panel and other circuit.
Be connected signal between drive circuit board and liquid crystal panel, comprise digital signal and the large class of LVDS signal two.Wherein on the current comparison techniques of LVDS newer and widely used a kind of be the mini-LVDS interface specification.Mini-LVDS standard range of application mainly is confined in the transmission of liquid crystal panel displaying contents, does not have other common apparatus to use.
Because drive circuit board is quite accurate, circuit component is tiny, material and produce in the quality problems that occur can't use simple visualize, when factory produces in a large number, be after checking SMT paster and finished product all will carry out the electric property detection before assembling.Detection for product, existing factory does after function detects to do assembling and detects after employing actual products actual assembled, rely on the manually-operated product and observe display effect and judge whether non-defective unit, again bad monomer is broken out after pinpointing the problems and change or maintenance, it is larger that such testing process is affected by production test personnel's the level that is skilled in technique and subjective judgement power, bad monomer break the process of restructuring more loaded down with trivial details and also can association to the dismounting damage of other assemblies.
But the application of mini-LVDS standard in liquid crystal panel drives be specialty and special comparatively, the existing driving circuit performance that does not also have equipment can directly test the mini-LVDS standard, thereby realize drive circuit board is done to the monomer test before final assembly, avoid above-mentioned mentioned drawback.
Summary of the invention
The purpose of this utility model is to provide a kind of ATE (automatic test equipment) of liquid crystal panel drive circuit plate, in order to solve product in prior art, overhauls inconvenient defect.
The utility model is achieved through the following technical solutions:
A kind of ATE (automatic test equipment) of liquid crystal panel drive circuit plate, comprise drive circuit board, digital signal detection module and/or mini-LVDS signal decoding circuit, described digital signal detection module comprises digital signal Threshold detection circuit, digital signal logic detection circuit and USB interface, described drive circuit board, digital signal Threshold detection circuit, digital signal logic detection circuit are connected in turn with USB interface, the external computer of described USB interface; Described mini-LVDS signal decoding circuit comprises mini-LVDS driver, programming device, DVI transmitter, DVI driver, DVI socket and storer, described drive circuit board, mini-LVDS driver, programming device, DVI transmitter, DVI driver and DVI socket are connected in turn, described DVI socket is by the external computer of data line, and described programming device also is connected with described storer.
Preferably, described programming device is fpga chip.
Preferably, also include a single-chip microcomputer, described single-chip microcomputer is connected with described programming device.
The technique scheme that the utility model adopts, its effect is positive:
1, do not need drive circuit board is assembled into to performance and the quality that the complete machine state just can detect drive circuit board.Reduce the consumption of other assembly used as the drive circuit board condition of work, thereby saved a considerable amount of test material costs.
2, the performance interpretation of drive circuit board is completed by PC software, has objective consistance and stability, is not subject to operating personnel's skill level, the impact of subjective judgement deviation and the state of mind; Reduce operating personnel's requirement and working strength simultaneously, be conducive to stability and the continuity of producing.
3, the utility model adopts the performance of software programming and programming device interpretation drive circuit board, to different drive circuit boards and flying-spot video generator, can realize coupling by software upgrading, and the product type conversion of production line has more elasticity.
The accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model.
Wherein 1 is drive circuit board, and 2 is digital signal Threshold detection circuit, and 3 is digital signal logic detection circuit, and 4 is USB interface, and 5 is the mini-LVDS driver, and 6 is fpga chip, and 7 is the DVI transmitter, and 8 is the DVI driver, and 9 is the DVI socket, and 10 is storer.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can more be become apparent, below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Set forth detail in the following description so that fully understand the utility model.But the utility model can be different from alternate manner described here and implements with multiple, and those skilled in the art can be in the situation that do similar popularization without prejudice to the utility model intension.Therefore the utility model is not subject to the restriction of following public embodiment.
Referring to Fig. 1, a kind of ATE (automatic test equipment) of liquid crystal panel drive circuit plate, comprise drive circuit board 1, digital signal detection module and/or mini-LVDS signal decoding circuit, the digital signal detection module comprises digital signal Threshold detection circuit 2, digital signal logic detection circuit 3 and USB interface 4, drive circuit board 1, digital signal Threshold detection circuit 2, digital signal logic detection circuit 3 are connected in turn with USB interface 4, the external computer of USB interface 4; The mini-LVDS signal decoding circuit comprises mini-LVDS driver 5, fpga chip 6, DVI transmitter 7, DVI driver 8, DVI socket 9 and storer 10, drive circuit board 1, mini-LVDS driver 5, fpga chip 6, DVI transmitter 7, DVI driver 8 and DVI socket 9 are connected in turn, DVI socket 9 is by the external computer of data line, and fpga chip 6 also is connected with storer 10; The startup of fpga chip 6 by a Single-chip Controlling fpga chip and resetting, the test result of output driving circuit plate 1 simultaneously.
During testing apparatus work, at first pass through flying-spot video generator, provide vision signal to arrive drive circuit board 1, drive circuit board 1 is started working, and vision signal is converted to the mini-LVDS signal that sends to liquid crystal panel, and then output to by mini-LVDS driver 5, fpga chip 6, the mini-LVDS signal decoding circuit that DVI transmitter 7 and DVI driver 8 form, after decoding, output DVI signal is to external computer, restore test signal, the image occurred by the software on computer and flying-spot video generator compares, and judge that whether drive circuit board 1 image decoding function operation is normal.
During drive circuit board 1 work, except output mini-LVDS signal, output has digital logic signal together, digital logic signal outputs to digital signal Threshold detection circuit 2 and digital signal logic detection circuit 3, result outputs on computer by USB interface, and on computer, software judges whether drive circuit board 1 digital logic signal output is normal.
The technical solution of the utility model at least has following advantage:
1, do not need drive circuit board is assembled into to performance and the quality that the complete machine state just can detect drive circuit board.Reduce the consumption of other assembly used as the drive circuit board condition of work, thereby saved a considerable amount of test material costs.
2, the performance interpretation of drive circuit board is completed by PC software, has objective consistance and stability, is not subject to operating personnel's skill level, the impact of subjective judgement deviation and the state of mind; Reduce operating personnel's requirement and working strength simultaneously, be conducive to stability and the continuity of producing.
3, the utility model adopts the performance of software programming and programming device interpretation drive circuit board, to different drive circuit boards and flying-spot video generator, can realize coupling by software upgrading, and the product type conversion of production line has more elasticity.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not within breaking away from spirit and scope of the present utility model; can utilize method and the technology contents of above-mentioned announcement to make possible change and modification to technical solutions of the utility model; therefore; every content that does not break away from technical solutions of the utility model; any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all belong to the protection domain of technical solutions of the utility model.
Claims (3)
1. the ATE (automatic test equipment) of a liquid crystal panel drive circuit plate, comprise drive circuit board, and digital signal detection module and/or mini-LVDS signal decoding circuit is characterized in that:
Described digital signal detection module comprises digital signal Threshold detection circuit, digital signal logic detection circuit and USB interface, described drive circuit board, digital signal Threshold detection circuit, digital signal logic detection circuit are connected in turn with USB interface, the external computer of described USB interface;
Described mini-LVDS signal decoding circuit comprises mini-LVDS driver, programming device, DVI transmitter, DVI driver, DVI socket and storer, described drive circuit board, mini-LVDS driver, programming device, DVI transmitter, DVI driver and DVI socket are connected in turn, described DVI socket is by the external computer of data line, and described programming device also is connected with described storer.
2. the ATE (automatic test equipment) of liquid crystal panel drive circuit plate as claimed in claim 1, it is characterized in that: described programming device is fpga chip.
3. the ATE (automatic test equipment) of liquid crystal panel drive circuit plate as claimed in claim 1 or 2, it is characterized in that: also include a single-chip microcomputer, described single-chip microcomputer is connected with described programming device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464426.3U CN203376955U (en) | 2013-07-31 | 2013-07-31 | Automatic test equipment for liquid crystal display panel driving circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464426.3U CN203376955U (en) | 2013-07-31 | 2013-07-31 | Automatic test equipment for liquid crystal display panel driving circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203376955U true CN203376955U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320464426.3U Expired - Fee Related CN203376955U (en) | 2013-07-31 | 2013-07-31 | Automatic test equipment for liquid crystal display panel driving circuit board |
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| CN (1) | CN203376955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037444A (en) * | 2017-12-29 | 2018-05-15 | 广州市中海达测绘仪器有限公司 | GNSS PCBA automatization test systems and its application process |
| CN108346392A (en) * | 2017-10-25 | 2018-07-31 | 武汉精测电子集团股份有限公司 | A kind of liquid-crystalline glasses panel detection signal generation apparatus and method |
-
2013
- 2013-07-31 CN CN201320464426.3U patent/CN203376955U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346392A (en) * | 2017-10-25 | 2018-07-31 | 武汉精测电子集团股份有限公司 | A kind of liquid-crystalline glasses panel detection signal generation apparatus and method |
| CN108346392B (en) * | 2017-10-25 | 2021-08-13 | 武汉精测电子集团股份有限公司 | Liquid crystal glass panel detection signal generation device and method |
| CN108037444A (en) * | 2017-12-29 | 2018-05-15 | 广州市中海达测绘仪器有限公司 | GNSS PCBA automatization test systems and its application process |
| CN108037444B (en) * | 2017-12-29 | 2023-12-15 | 广州市中海达测绘仪器有限公司 | GNSS PCBA automatic test system and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |