CN102654964B - The programmable gate array test plate of liquid crystal display and programmable gate array test system - Google Patents
The programmable gate array test plate of liquid crystal display and programmable gate array test system Download PDFInfo
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- CN102654964B CN102654964B CN201210139680.6A CN201210139680A CN102654964B CN 102654964 B CN102654964 B CN 102654964B CN 201210139680 A CN201210139680 A CN 201210139680A CN 102654964 B CN102654964 B CN 102654964B
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Abstract
The invention discloses a kind of programmable gate array test plate and programmable gate array test system of liquid crystal display, programmable gate array test plate is based on ARM kernel, the liquid crystal display test macro of collocation programmable gate array, comprises PCB test board and is arranged on the liquid crystal display mainboard installation position on described PCB test board; Programmable gate array matching chip that described PCB test board is also arranged in pairs or groups and ARM core chip, the each input pin of described programmable gate array matching chip is connected with described ARM core chip respectively, and each output pin of described programmable gate array matching chip is connected with described liquid crystal display mainboard installation position by circuit; Further, also arrange short circuit isolation circuit between described programmable gate array matching chip and described liquid crystal display mainboard installation position, programmable gate array test system comprises programming gate array test plate and liquid crystal display module.Cost of the present invention is low, testing efficiency is high, easy to use, compatible strong, test safety is reliable.
Description
Technical field
The present invention relates to the proving installation of LCDs, the programmable gate array test plate of in particular a kind of liquid crystal display and the liquid crystal display module test macro of use programmable gate array test plate.
Background technology
In prior art, traditional LCDs producer tests the display of LCDs, general all corresponding different model, the test of different types of LCDs, input pin due to its liquid crystal display mainboard distributes and input function pin is not quite similar, therefore, the LCDs of each model corresponding or each kind, all need the PCB test board that a correspondence is set, tested by corresponding PCB test board, often change the different LCDs of test, all need to change test board, testing cost is high, and testing efficiency is low.
Therefore, prior art existing defects, needs to improve.
Summary of the invention
Technical matters to be solved by this invention is: provide that a kind of cost is low, testing efficiency is high, easy to use, compatible strong, the programmable gate array test plate of the reliable liquid crystal display of test safety and the liquid crystal display module test macro of use programmable gate array test plate.
Technical scheme of the present invention is as follows: a kind of programmable gate array test plate of liquid crystal display, comprises PCB test board and is arranged on the liquid crystal display mainboard installation position on described PCB test board; Described PCB test board is also arranged programmable gate array matching chip and ARM core chip, the each input pin of described programmable gate array matching chip is connected with described ARM core chip respectively, and each output pin of described programmable gate array matching chip is connected with described liquid crystal display mainboard installation position by circuit; Further, between described programmable gate array matching chip and described liquid crystal display mainboard installation position, short circuit isolation circuit is also set.
Be applied to technique scheme, in described programmable gate array test plate, described ARM system arranges memory module and the update module be connected with described memory module respectively and USB interface.
Be applied to each technique scheme, in described programmable gate array test plate, described ARM system also arranges the WIFI receiver module be connected with described memory module.
Be applied to each technique scheme, in described programmable gate array test plate, described liquid crystal display mainboard installation position arranges some pin connection bits, each pin connection bit is connected with the input pin of liquid crystal display mainboard respectively, and described programmable gate array matching chip arranges input and output Auto-matching module.
Be applied to each technique scheme, in described programmable gate array test plate, described liquid crystal display mainboard installation position arranges power supply installation portion, the first function mounting portion and the second function mounting portion, and different liquid crystal display mainboards is installed with described second function mounting portion is corresponding respectively by described first function mounting portion.
Be applied to each technique scheme, in described programmable gate array test plate, described liquid crystal display mainboard installation position also arranges at least two card-tight parts, for clamping the edge part of fixing liquid crystal display mainboard respectively.
Be applied to each technique scheme, in described programmable gate array test plate, described short circuit isolation circuit arranges disconnector, when exceeding preset value for its electric current, disconnects the electrical connection between described programmable gate array matching chip and described liquid crystal display mainboard installation position.
Be applied to technique scheme, a kind of programmable gate array test system of liquid crystal display, comprise programmable gate array test plate and the liquid crystal display module of above arbitrary described liquid crystal display, described liquid crystal display module comprises the LCDs and liquid crystal display mainboard that are mutually fixedly set, and described liquid crystal display mainboard is fixed on described liquid crystal display mainboard installation position.
Be applied to each technique scheme, in described programmable gate array test system, also comprise a liquid crystal display mainboard and extend connector; Described liquid crystal display mainboard extends connector and comprises the first connector, the second connector and connect the prolongation connecting line of described first connector and described second connector, described first connector is fixedly connected with described liquid crystal display mainboard installation position, and described second connector is fixedly connected with described liquid crystal display mainboard.
Adopt such scheme, the present invention can install fixing each liquid crystal display mainboard by described liquid crystal display mainboard installation position, the LCDs that each liquid crystal display mainboard is corresponding with it is fixedly connected with, by described ARM core chip, control signal is inputed to described programmable gate array matching chip, described programmable gate array matching chip is according to the input of described liquid crystal display mainboard, the input and output of described control signal are mated, make described control signal can input in each LCDs of different model and kind, and show video corresponding to described control signal, thus the display performance of described LCDs is tested by described video, judge whether described LCDs exists can not light, blank screen, Hua Ping etc., different model can be tested by means of only a PCB test board, different types of LCDs, testing cost is low, testing efficiency is high, further, easy to use, compatible strong, further, by arranging short circuit isolation circuit, make described liquid crystal display mainboard and programmable gate array matching chip all be not easy to burn out, test safety is reliable.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of embodiment 1 in the specific embodiment of the invention.
Fig. 2 is a kind of schematic diagram of embodiment 2 in the specific embodiment of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
Present embodiments provide a kind of programmable gate array test plate of liquid crystal display, described liquid crystal display programmable gate array test plate is used for the test of various LCDs display performance, as, whether light for testing mobile phone LCDs, whether completely show, and whether display exists stain, whether Hua Ping etc., test different LCDs and variety classes, classification LCDs time, only need programmable gate array test plate described in, compatible strong, test safety is reliable.
As shown in Figure 1, described programmable gate array test plate comprises PCB test board 102, described PCB test board 102 is provided with liquid crystal display mainboard installation position 101; Liquid crystal display mainboard, for installing liquid crystal display mainboard, wherein, can be arranged on described liquid crystal display mainboard installation position 101 by modes such as welding, clampings by described liquid crystal display mainboard installation position 101; Usually, each liquid crystal display mainboard is all fixedly installed with LCDs, by the liquid crystal display mainboard of its correspondence, can light described LCDs, thus test the display performance of described LCDs.
Further, described PCB test board 102 is also respectively arranged with programmable gate array matching chip 103 and ARM(AdvancedRISCMachines microprocessor) system 104, such as, described ARM system 104 arranges memory module, update module and usb 1 05; Described update module is connected with described memory module respectively with described usb 1 05, instruction etc. can be performed by the various display video file of input, control by described usb 1 05, and be stored in described memory module, described update module is according to setting, when meeting pre-conditioned, the file that described memory module stores is upgraded, realizes the up-to-date displaying contents of described ARM system and controlling functions.
And for example, described ARM system also arranges the WIFI(wirelessfidelity be connected with described memory module) receiver module, by WIFI receiver module, directly can send various displaying content file and various display and control command file in the described memory module of described ARM system by WIFI LAN (Local Area Network), use according to convenient, as displaying content file and various display and control command file as described in can being sent by the WIFI sending function of various mobile phone.
And, described ARM system arranges an ARM core chip, each input pin of described programmable gate array matching chip 103 is connected with described ARM core chip respectively, described ARM core chip is according to described displaying content file, and various display and control instruction literary composition generates control signal, and control signal is inputed in described programmable gate array matching chip 103, and, each output pin of described programmable gate array matching chip 103 is connected with described liquid crystal display mainboard installation position 101 by circuit, namely to be electrically connected with liquid crystal display mainboard by described liquid crystal display mainboard installation position 101 and signal is connected, after the described programmable gate array matching chip 103 of connection with described liquid crystal display mainboard, the input and output of described programmable gate array matching chip to described control signal are mated, make the output of ARM core chip when not mating with described liquid crystal display mainboard input, by described programmable gate array matching chip 103 Auto-matching, thus when connecting different liquid crystal display mainboards, can Auto-matching, guarantee that described control signal inputs in each liquid crystal display mainboard by described ARM core chip, the LCDs corresponding by described liquid crystal display mainboard shows, thus testing different LCDs, same described programmable gate array test plate can be adopted, guarantee feasibility and the reliability of test.
And, between described programmable gate array matching chip 103 and described liquid crystal display mainboard installation position 101, short circuit isolation circuit 106 is also set, described short circuit isolation circuit is when carrying out display test to LCDs, after liquid crystal display mainboard being fixed on described liquid crystal display mainboard installation position, when the electric current connected is greater than a certain preset value, 106, described short circuit isolation circuit disconnects the connection between described liquid crystal display mainboard installation position and described programmable gate array matching chip automatically, thus described programmable gate array matching chip is protected, guarantee that it can not be excessive because of electric current, or be short-circuited and burn out, described programmable gate array test plate long service life.
Such as, described short circuit isolation circuit can arrange disconnector, when its electric current exceedes the maximal value that described short circuit isolation circuit can bear, described disconnector disconnects, thus the electrical connection disconnected between described programmable gate array matching chip and described liquid crystal display mainboard installation position, guarantee that described programmable gate array matching chip and described programmable gate array test plate are not burned.
And for example, described liquid crystal display mainboard installation position arranges some pin connection bits, each pin connection bit is corresponding with the input pin of liquid crystal display mainboard respectively to be connected, be connected by the input pin of each pin connection bit with affiliated liquid crystal display mainboard, after the input and output Auto-matching module arranged by described programmable gate array matching chip carries out Auto-matching, described control signal is inputed in described liquid crystal display mainboard, LCDs again by being fixedly connected with described liquid crystal display mainboard shows, thus the display effect of described LCDs is tested by display, judge whether that existence can not be lighted, blank screen, the defects such as Hua Ping.
Or, another example is, described liquid crystal display mainboard installation position arranges power supply installation portion, the first function mounting portion and the second function mounting portion, described power supply installation portion is provided with positive source pin and power cathode pin, is communicated with the electrical connection between described liquid crystal display mainboard and described programmable gate array test plate by described power supply installation portion; And, described first function mounting portion and described second function mounting portion also arrange various function pin respectively, the different liquid crystal display mainboard of corresponding installation can be distinguished by described first function mounting portion and described second function mounting portion, thus make described liquid crystal display installation position can the corresponding liquid crystal display mainboard installing various different model, thus when testing the LCDs of different model, without the need to changing described programmable gate array test plate, use cost is low.
Or, another is at example, described liquid crystal display mainboard installation position also arranges two or more card-tight part, each card-tight part is fixedly installed on described PCB test board, when connecting described liquid crystal display mainboard, the edge part of fixing liquid crystal display mainboard is also clamped respectively by each card-tight part, thus the connection making described liquid crystal display show between mainboard and described PCB test board is more firm, after making it be fixed on described liquid crystal display mainboard installation position, and the electrical connection between described programmable gate array matching chip, other functions connect more firm together, testing reliability is strong.
Embodiment 2
As shown in Figure 2, present embodiments provide a kind of programmable gate array test system of liquid crystal display, by described programmable gate array control system, the display performance of various LCDs can be tested, as, whether light for testing mobile phone LCDs, whether completely show, and whether there is stain, Hua Ping etc.; When testing different LCDs, only need the Panel Type changing test to complete test, test is compatible strong, safe and reliable.
Wherein, the programmable gate array test system of described liquid crystal display comprises programmable gate array test plate and the liquid crystal display module of arbitrary described liquid crystal display in embodiment 1, described programmable gate array test plate comprises PCB test board 102 and the programmable gate array matching chip 103 be arranged in described PCB test, ARM system 104 and described liquid crystal display mainboard installation position 101, and described ARM system 104 is provided with usb 1 05; Described programmable gate array test plate as described in Example 1, is not repeated herein.
And, described LCD MODULE comprises the LCDs 201 and liquid crystal display mainboard 202 that are mutually fixedly set, usually, each LCDs 201 is corresponding with its corresponding liquid crystal display mainboard 202 fixing, further, be fixed on described liquid crystal display mainboard installation position 101 by described liquid crystal display mainboard 202.
Or on the basis of above-mentioned example, described liquid crystal display programmable gate array test system also comprises a liquid crystal display mainboard and extends connector; By described liquid crystal display mainboard extended line, described liquid crystal display mainboard and liquid crystal display mainboard can be made to install install be fixedly connected with in a predeterminable range, wherein, described liquid crystal display mainboard extends connector and comprises the first connector, the second connector and connect the prolongation connecting line of described first connector and described second connector, described first connector and described liquid crystal display mainboard installation position be fixing be electrically connected and function signal transmission is connected, and described second connector and described liquid crystal display mainboard are fixed and to be electrically connected and function signal transmission is connected; By described prolongation connector, electrical connection between described liquid crystal display mainboard with described liquid crystal display mainboard installation position can be realized and function signal transmission is connected, the carrying out of convenient test at certain distance.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (8)
1. a programmable gate array test plate for liquid crystal display, comprises PCB test board and is arranged on the liquid crystal display mainboard installation position on described PCB test board, it is characterized in that;
Described PCB test board also arranges programmable gate array matching chip and ARM system, described ARM system arranges an ARM core chip, the each input pin of described programmable gate array matching chip is connected with described ARM core chip respectively, and each output pin of described programmable gate array matching chip is connected with described liquid crystal display mainboard installation position by circuit;
Described ARM core chip generates control signal according to the displaying content file and various display and control instruction literary composition that are sent to ARM system, and control signal is inputed in described programmable gate array matching chip;
After the described programmable gate array matching chip of connection and described liquid crystal display mainboard, the input and output of described programmable gate array matching chip to described control signal are mated, make the output of ARM core chip when not mating with described liquid crystal display mainboard input, by described programmable gate array matching chip Auto-matching;
Further, between described programmable gate array matching chip and described liquid crystal display mainboard installation position, short circuit isolation circuit is also set;
Described liquid crystal display mainboard installation position arranges power supply installation portion, the first function mounting portion and the second function mounting portion, and different liquid crystal display mainboards is installed with described second function mounting portion is corresponding respectively by described first function mounting portion;
Described power supply installation portion is provided with positive source pin and power cathode pin, is communicated with the electrical connection between described liquid crystal display mainboard and described programmable gate array test plate by described power supply installation portion; Further, described first function mounting portion and described second function mounting portion also arrange various function pin respectively.
2. programmable gate array test plate according to claim 1, is characterized in that, described ARM system also arranges memory module and the update module be connected with described memory module respectively and USB interface.
3. programmable gate array test plate according to claim 2, is characterized in that, described ARM system also arranges the WIFI receiver module be connected with described memory module.
4. programmable gate array test plate according to claim 1, it is characterized in that, described liquid crystal display mainboard installation position arranges some pin connection bits, each pin connection bit is connected with the input pin of liquid crystal display mainboard respectively, and described programmable gate array matching chip arranges input and output Auto-matching module.
5. programmable gate array test plate according to claim 1, is characterized in that, described liquid crystal display mainboard installation position also arranges at least two card-tight parts, for clamping the edge part of fixing liquid crystal display mainboard respectively.
6. programmable gate array test plate according to claim 1, it is characterized in that, described short circuit isolation circuit arranges disconnector, when exceeding preset value for its electric current, disconnects the electrical connection between described programmable gate array matching chip and described liquid crystal display mainboard installation position.
7. the programmable gate array test system of a liquid crystal display, it is characterized in that, comprise programmable gate array test plate and the liquid crystal display module of the arbitrary described liquid crystal display of above claim 1-5, described liquid crystal display module comprises the LCDs and liquid crystal display mainboard that are mutually fixedly set, and described liquid crystal display mainboard is fixed on described liquid crystal display mainboard installation position.
8. programmable gate array test system according to claim 7, is characterized in that, also comprises a liquid crystal display mainboard and extends connector; Described liquid crystal display mainboard extends connector and comprises the first connector, the second connector and connect the prolongation connecting line of described first connector and described second connector, described first connector is fixedly connected with described liquid crystal display mainboard installation position, and described second connector is fixedly connected with described liquid crystal display mainboard.
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| CN201210139680.6A CN102654964B (en) | 2012-05-08 | 2012-05-08 | The programmable gate array test plate of liquid crystal display and programmable gate array test system |
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| CN104517554B (en) * | 2014-12-17 | 2017-07-07 | 武汉精测电子技术股份有限公司 | MIPI liquid crystal module Vcom calibration apparatus and method based on FPGA |
| CN105304000B (en) * | 2015-09-23 | 2019-01-22 | 昆山龙腾光电有限公司 | Liquid crystal display die set aging testing system |
| CN105427773B (en) * | 2015-11-24 | 2018-12-18 | 昆山龙腾光电有限公司 | Liquid crystal display die set aging testing system |
| CN108898995A (en) * | 2018-08-14 | 2018-11-27 | 安徽世阳光电有限公司 | A kind of display without adjusting screen |
| CN110377477B (en) * | 2019-07-19 | 2023-07-14 | 华勤技术股份有限公司 | Electronic equipment, functional module, main board of electronic equipment and detection method |
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