CN204632306U - A kind of LCM test board - Google Patents
A kind of LCM test board Download PDFInfo
- Publication number
- CN204632306U CN204632306U CN201420873227.2U CN201420873227U CN204632306U CN 204632306 U CN204632306 U CN 204632306U CN 201420873227 U CN201420873227 U CN 201420873227U CN 204632306 U CN204632306 U CN 204632306U
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- lcm
- interface
- test board
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- rgb
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Abstract
The utility model relates to the technical field of measurement and test of LCM, refers to a kind of LCM test board especially.A kind of LCM test board, comprises single-chip microcomputer processing unit, SD card outer despreading circuit, display screen, USB interface, switch key, MIPI interface and rgb interface; The outer despreading circuit of described SD card, display screen, USB interface are all connected with single-chip microcomputer processing unit with switch key, and described single-chip microcomputer processing unit connects described rgb interface by RGB driving circuit; Described RGB driving circuit also connects described MIPI interface by MIPI driving circuit; Described switch key includes upwarding key and down Arrow, and described upwarding key and down Arrow are used for the selection to program.The utility model provides a kind of LCM test board, can download multiple test procedure successively in described LCM test board, be realized the selection of test procedure by switch key, need not again download when changing LCM model, improves testing efficiency.
Description
Technical field
The utility model relates to the technical field of measurement and test of LCM, refers to a kind of LCM test board especially.
Background technology
LCM(LCD Module) namely LCD show module, Liquid Crystal Module, refer to assembly liquid crystal display device, web member, control and LCD driving circuit, backlight etc. are assembled together.LCM has to pass through test passes after having produced, and could release market, is therefore necessary to design a beta version conveniently carrying out testing for LCM liquid crystal display module.In test process, the LCM for different model will adopt different test procedures, but existing LCM test board is all once download a single test procedure in microprocessor, and the LCM for a kind of model tests.When changing LCM model at every turn, all need in the microprocessor of test board, again download corresponding test procedure, make testing efficiency low.
Summary of the invention
The utility model provides a kind of LCM test board, can download multiple test procedure successively in described LCM test board, be realized the selection of test procedure by switch key, need not again download when changing LCM model, improves testing efficiency.
For solving the problems of the technologies described above, the utility model provides following technical scheme:
A kind of LCM test board, comprises single-chip microcomputer processing unit, SD card outer despreading circuit, display screen, USB interface, switch key, MIPI interface and rgb interface;
The outer despreading circuit of described SD card, display screen, USB interface are all connected with single-chip microcomputer processing unit with switch key, and described single-chip microcomputer processing unit connects described MIPI interface by MIPI driving circuit;
Described single-chip microcomputer processing unit connects described rgb interface by RGB driving circuit;
Described switch key includes upwarding key and down Arrow, and described upwarding key and down Arrow are used for the selection to program.
Further, also include power circuit, it is described single-chip microcomputer processing unit and RGB drive circuitry that described power circuit connects described three-terminal voltage-stabilizing pipe control circuit.
Further, described power circuit connects described three-terminal voltage-stabilizing pipe control circuit by & off switch.
Further, SD card is included in the outer despreading circuit of described SD card.
Further, described switch key also includes left key and right key.
The utility model compared with prior art, its remarkable advantage is: the utility model provides a kind of LCM test board, the test procedure of the LCM test board of different model is downloaded in single-chip microcomputer processing unit, the selection of test procedure is realized by the upwarding key of switch key and down Arrow, again need not download when changing LCM model, improve testing efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly introduced, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.In these accompanying drawings, for the sake of clarity, may be exaggerated size and the relative size in structure and region.
Fig. 1 is the circuit structure block diagram of embodiment 1 in the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical solution of the utility model is clearly and completely described.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
embodiment 1:
See accompanying drawing 1, a kind of LCM test board, comprises single-chip microcomputer processing unit, SD card outer despreading circuit, display screen, USB interface, switch key, MIPI interface and rgb interface; The outer despreading circuit of described SD card, display screen, USB interface are all connected with single-chip microcomputer processing unit with switch key, and described single-chip microcomputer processing unit connects described rgb interface by RGB driving circuit; Described RGB driving circuit also connects described MIPI interface by MIPI driving circuit; Described MIPI driving circuit converts MIPI signal to by the signal obtaining the generation of RGB driving circuit and connects described MIPI interface; Described switch key includes upwarding key and down Arrow, and described upwarding key and down Arrow are used for the selection to program.
Further, also include power circuit, it is described single-chip microcomputer processing unit and RGB drive circuitry that described power circuit connects described three-terminal voltage-stabilizing pipe control circuit, described three-terminal voltage-stabilizing pipe is also powered for each interface backlight both positive and negative polarity, and described three-terminal voltage-stabilizing pipe control circuit connects each interface backlight both positive and negative polarity by backlight electric power booster circuit.
Further, described power circuit connects described three-terminal voltage-stabilizing pipe control circuit by & off switch; SD card is included in the outer despreading circuit of described SD card; Described switch key also includes left key and right key.
The utility model in the specific implementation, the MCU interface connected by single-chip microcomputer processing unit is connected described LCM module to be measured with SPI interface, wherein MCU interface have employed FPDP and the signal port of single-chip microcomputer output, and wherein signal port is preferably CS, RS, RESET, WR and RD port.First by LCM module to be measured access MCU interface and SPI interface, press on & off switch, it is that single-chip microcomputer processing unit is powered that power circuit is communicated with three-terminal voltage-stabilizing pipe control circuit.LCM test board in the present embodiment is connected with computer by USB interface, presses the left button in switch key, enters the pattern of downloading, and by downloading software MINI TOOL by download program in SD card, program name can synchronously be presented in display screen simultaneously.The program corresponding with LCM module is selected by the upwarding key of switch key and down Arrow, press right key and enter test pattern, the LCD display module in LCM module can circulate the test pictures and picture that occur different color, can detect the quality of LCM module.Certainly, the function of the present embodiment to upwarding key, down Arrow, left key or right key does not limit, and those skilled in that art arbitrarily can set the function of switch key as required.
The utility model provides a kind of LCM test board, the test procedure of the LCM test board of different model is all downloaded in single-chip microcomputer processing unit, realized the selection of corresponding test procedure by the upwarding key of switch key and down Arrow, need not again download when changing LCM model, improve testing efficiency.
Above-described embodiment, does not form the restriction to this technical scheme protection domain.The amendment done within any spirit at above-mentioned embodiment and principle, equivalently to replace and improvement etc., within the protection domain that all should be included in this technical scheme.
Claims (5)
1. a LCM test board, is characterized in that: comprise single-chip microcomputer processing unit, SD card outer despreading circuit, display screen, USB interface, switch key, MIPI interface and rgb interface;
The outer despreading circuit of described SD card, display screen, USB interface are all connected with single-chip microcomputer processing unit with switch key, and described single-chip microcomputer processing unit connects described rgb interface by RGB driving circuit;
Described RGB driving circuit also connects described MIPI interface by MIPI driving circuit;
Described switch key includes upwarding key and down Arrow, and described upwarding key and down Arrow are used for the selection to program.
2. a kind of LCM test board as claimed in claim 1, is characterized in that: also include power circuit, and it is described single-chip microcomputer processing unit and RGB drive circuitry that described power circuit connects described three-terminal voltage-stabilizing pipe control circuit.
3. a kind of LCM test board as claimed in claim 2, is characterized in that: described power circuit connects described three-terminal voltage-stabilizing pipe control circuit by & off switch.
4. a kind of LCM test board as claimed in claim 1, is characterized in that: include SD card in the outer despreading circuit of described SD card.
5. a kind of LCM test board as claimed in claim 1, is characterized in that: described switch key also includes left key and right key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420873227.2U CN204632306U (en) | 2014-12-31 | 2014-12-31 | A kind of LCM test board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420873227.2U CN204632306U (en) | 2014-12-31 | 2014-12-31 | A kind of LCM test board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204632306U true CN204632306U (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420873227.2U Expired - Fee Related CN204632306U (en) | 2014-12-31 | 2014-12-31 | A kind of LCM test board |
Country Status (1)
| Country | Link |
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| CN (1) | CN204632306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111930647A (en) * | 2020-09-09 | 2020-11-13 | 蘑菇车联信息科技有限公司 | USB interface working mode selection device and method and android device |
-
2014
- 2014-12-31 CN CN201420873227.2U patent/CN204632306U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111930647A (en) * | 2020-09-09 | 2020-11-13 | 蘑菇车联信息科技有限公司 | USB interface working mode selection device and method and android device |
| CN111930647B (en) * | 2020-09-09 | 2020-12-25 | 蘑菇车联信息科技有限公司 | USB interface working mode selection device and method and android device |
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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: 20150909 Termination date: 20181231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |