CN202487114U - Liquid crystal display testing jig of RGB (Red, Green, Blue) interface - Google Patents
Liquid crystal display testing jig of RGB (Red, Green, Blue) interface Download PDFInfo
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- CN202487114U CN202487114U CN 201220085626 CN201220085626U CN202487114U CN 202487114 U CN202487114 U CN 202487114U CN 201220085626 CN201220085626 CN 201220085626 CN 201220085626 U CN201220085626 U CN 201220085626U CN 202487114 U CN202487114 U CN 202487114U
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Abstract
The utility model provides a liquid crystal display testing jig of an RGB (Red, Green, Blue) interface. The liquid crystal display testing jig comprises a testing module, a backlight source driving module and a control module, wherein the backlight source driving module and the control module are electrically connected with the testing module, the testing module comprises a microprocessor and a storage module electrically connected with the microprocessor, a test program is burned for a memory module in advance, the control module comprises a liquid crystal driving module electrically connected with the microprocessor, the liquid crystal driving module comprises an SPI (Serial Peripheral Interface), and the backlight source driving module is electrically connected with the microprocessor. A liquid crystal display to be tested is directly connected to the bus of a memory and is initialized according to an MCU (Microprogrammed Control Unit) mode, and display data is written into a DDRAM (Double Data Random Access Memory) and is subjected to offscreen drawing, so that a GRAM (Global Random Access Memory) is not consumed, the data transmission speed and the test speed are quick, the high resolution is supported, and the large screen display can be achieved easily.
Description
Technical field
The utility model relates to a kind of measurement jig, relates in particular to a kind of lcd panel test tool of rgb interface.
Background technology
LCD is the display device of planar ultra-thin, and it is made up of the colour or the monochrome pixels of some, is positioned over light source or reflecting surface the place ahead.LCD has slimming, characteristics such as low in energy consumption, widely applicable, enjoys the slip-stick artist to favor.
The most frequently used connection mode of liquid crystal display of existing small-medium size generally is MCU pattern and RGB pattern, and the control of MCU pattern is simple and convenient, need not clock and synchronizing signal, but will expend GRAM, is difficult to accomplish giant-screen, is usually used in showing still picture; The RGB pattern need not GRAM, and transmission speed is very fast, but complicated operation needs the control of clock and synchronizing signal, is usually used in display video or animation.
Existing lcd panel test tool adopts the design of 51 single-chip microcomputers; The highest 48MHZ that only reaches of system clock, when the display screen of test WVGA, testing efficiency reduces greatly; Can't satisfy production; Along with the 3G smart mobile phone is fast-developing, more be difficult to satisfy the client to the mobile device intelligent requirements, performances such as quick data transfering and support high resolving power.
The utility model content
The purpose of the utility model is to provide a kind of lcd panel test tool of rgb interface, and according to MPU pattern initialization liquid crystal display to be measured, video data need not to write DDRAM; The liquid crystal display that writes direct does not expend GRAM, and transmission speed is fast; Support high resolving power, satisfy production and client's demand.
For realizing above-mentioned purpose; The lcd panel test tool of the rgb interface that the utility model provides; Comprise: test module, be electrically connected at the backlight driver module of said test module and be electrically connected at the control module of said test module; Said test module comprises microprocessor and is electrically connected at the memory module of this microprocessor, and said memory module burning in advance has test procedure, and said control module comprises the liquid crystal driver module that is electrically connected at this microprocessor; Said liquid crystal driver module comprises a SPI interface, and said backlight driver module is electrically connected at this microprocessor.
Said lcd panel test tool also is provided with a jtag interface, and this jtag interface is electrically connected at this storer
Said lcd panel test tool also comprises an interface module, and this interface module is electrically connected at this control module and backlight driver module.
Said measurement jig also comprises a hummer, and this hummer is electrically connected at this microprocessor.
Said measurement jig also comprises an interrupt switch, and this interrupt switch is electrically connected at this microprocessor.
Said test module is the LPC2138 chip, and said control module is the SSD1963 chip.
Said backlight driver module is the CP2123 chip.
The beneficial effect of the utility model: the lcd panel test tool of the rgb interface that the utility model provides, through directly being connected on liquid crystal display on the bus of storer, and according to MCU pattern initialization liquid crystal display to be measured; Video data does not write DDRAM, directly writes screen, does not expend GRAM; Data rate is fast; Test speed is fast, also supports high resolving power, accomplishes large-size screen monitors easily.
In order further to understand the characteristic and the technology contents of the utility model, see also following detailed description and accompanying drawing, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited about the utility model.
Description of drawings
Below in conjunction with accompanying drawing, describe in detail through embodiment the utility model, the technical scheme that makes the utility model and other beneficial effect is obvious.
In the accompanying drawing,
Fig. 1 is the module map of the lcd panel test tool of the utility model rgb interface.
Embodiment
For further setting forth technological means and the effect thereof that the utility model is taked, be described in detail below in conjunction with the preferred embodiment and the accompanying drawing thereof of the utility model.
See also Fig. 1; The lcd panel test tool 20 of the rgb interface that the utility model provides; Comprise: test module 22, be electrically connected at the backlight driver module 25 of said test module 22 and be electrically connected at the control module 26 of said test module 22; Said test module 22 comprises microprocessor 224 and is electrically connected at the memory module 222 of this microprocessor 224, and the burning in advance of said memory module 222 has test procedure, and said control module 26 comprises the liquid crystal driver module 262 that is electrically connected at this microprocessor 224; Said liquid crystal driver module 262 comprises a SPI interface 2622, and said backlight driver module 25 is electrically connected at this microprocessor 224.
Said lcd panel test tool 20 also comprises a hummer 21; This hummer 21 electrically connects with this microprocessor 224, be used for this microprocessor 224 detect said backlight driver modules 25 and liquid crystal driver module 262 exist warnings when unusual with and test point out the usefulness of these liquid crystal display 40 test passes to be measured after finishing.
Said lcd panel test tool 20 also is provided with a jtag interface 23, and this jtag interface 23 is electrical connected in this memory module 222, can test procedure be burnt in the memory module 222 through this jtag interface 23, and change test procedure.And then test procedure that can be different according to the different product burning, make this measurement jig 20 be applicable to multiple product, enlarge the scope of application, and then reduced cost.
Said lcd panel test tool 20 also is provided with an interrupt switch 24, and this interrupt switch 24 is electrically connected at this microprocessor 224, can interrupt the conversion of liquid crystal display 40 epigraphs to be measured through this interrupt switch 24.
Said lcd panel test tool 20 also comprises an interface module 27; This interface module 27 electrically connects with control module 26 and backlight driver module 25; Said interface module 27 is installed and electrically be connected to liquid crystal display 40 to be measured during test; This liquid crystal display 40 to be measured electrically connects with liquid crystal driver module 262 and backlight driver module 25, that is SPI interface 2622 electrically connects with liquid crystal display 40 to be measured.Said liquid crystal display to be measured 40 directly is connected on the memory bus through this interface module 27, the setting of cancellation internal RAM, and video data is not saved in the internal RAM, directly on screen, writes, and test speed is fast.Through this interface module 27, liquid crystal display 40 to be measured has VSYNC, HSYNC, DOTCLK, ENABLE and data line etc. with the line of control module 26, and the data transmission position can be divided into 8,16 and 18.
The lcd panel test tool principle of work of the rgb interface that the utility model provides is following: liquid crystal display 40 to be measured is installed on the interface module 27; This liquid crystal display 40 to be measured electrically connects with control module 26 and backlight driver module 25; Connect the power supply of this measurement jig 20; Microprocessor 224 operation test procedures detect backlight driver module 25 and the liquid crystal driver module 262 that is electrically connected at this microprocessor 224, exist when unusual if detect backlight driver module 25 or liquid crystal driver module 262; Then control hummer 21 and send alarm, prompting user's backlight driver module 25 or liquid crystal driver module 262 exist unusual; If detect backlight driver module 25 and liquid crystal driver module 262 is no abnormal; Then backlight driver module 25 and liquid crystal driver module 262 are carried out initialization; Microprocessor 224 control backlight driver modules 25 drive the backlight work of liquid crystal display 40 to be measured; Transmit control signal and test signal to control module 26 simultaneously; Liquid crystal driver module 262 is pressed this liquid crystal display 40 to be measured of MCU pattern initialization through SPI interface 2622, and control module 26 directly is transferred to liquid crystal display 40 to be measured with the test signal that receives, and this liquid crystal display 40 to be measured shows correspondence image according to this test signal.
Judge whether image is unusual, if test process do not find image abnormity, judge that then this liquid crystal display to be measured 40 is qualified, this microprocessor 224 sends the qualified signal of this liquid crystal display to be measured 40; If certain image occurs unusually in the test process, judge that then liquid crystal display to be measured 40 is defective, and trigger this interrupt switch 24, interrupt the conversion of liquid crystal display 40 epigraphs to be measured, and this unusual picture is analyzed.
Said liquid crystal display to be measured 40 shows black, white, red, green, blue, GTG, coloured image successively according to test signal.It is that microprocessor 224 control hummers 21 send the prompt tone of " dripping " that said microprocessor 224 sends alarm.Said microprocessor 224 sends these liquid crystal display 40 qualified signals to be measured and shows that for this liquid crystal display 40 to be measured of these microprocessor 224 controls PASS picture and control hummer 21 send the prompt tone of " dripping ".Distinguish for alarm sound and qualified prompt tone that said hummer 21 is sent, it is minor that qualified prompt tone can be set, and the alarm sound is a long.
Before testing; Backlight driver module 25 and liquid crystal driver module 262 to electrically being connected to this microprocessor 224 detect; Guaranteed the normal operation of this measurement jig; This has improved the accuracy of this measurement jig 20 greatly, has avoided using bad measurement jig to draw inaccurate test result.
This measurement jig 20 adopts the MCU pattern when initialization liquid crystal display 40 to be measured, make that this measurement jig 20 is simple to operation; Need not clock signal and synchronizing signal, liquid crystal display 40 to be measured directly is connected on the memory bus, and video data need not to write DDRAM; Directly write screen; Need not to expend GRAM, support high resolving power, the highest support WVGA resolution.
In whole test process, after said liquid crystal display 40 initialization to be measured, this microprocessor 224 is through ceaselessly past liquid crystal display 40 write datas to be measured of control module 26.
In this preferred embodiment, said test module 22 is selected the LPC2138 chip for use, and said control module 26 is selected the SSD1963 chip for use, and said backlight driver module 25 is selected the CP2123 chip for use.
In sum, the lcd panel test tool of the rgb interface that the utility model provides is through directly being connected on liquid crystal display on the bus of storer; And according to MCU pattern initialization liquid crystal display to be measured, video data does not write DDRAM, directly writes screen; Do not expend GRAM, data rate is fast, and test speed is fast; Also support high resolving power, accomplish large-size screen monitors easily.
The above; For the person of ordinary skill of the art; Can make other various corresponding changes and distortion according to the technical scheme and the technical conceive of the utility model, and all these changes and distortion all should belong to the protection domain of the utility model claim.
Claims (7)
1. the lcd panel test tool of a rgb interface; It is characterized in that; Comprise: test module, be electrically connected at the backlight driver module of said test module and be electrically connected at the control module of said test module; Said test module comprises microprocessor and is electrically connected at the memory module of this microprocessor, and said memory module burning in advance has test procedure, and said control module comprises the liquid crystal driver module that is electrically connected at this microprocessor; Said liquid crystal driver module comprises a SPI interface, and said backlight driver module is electrically connected at this microprocessor.
2. the lcd panel test tool of rgb interface as claimed in claim 1 is characterized in that, said lcd panel test tool also is provided with a jtag interface, and this jtag interface is electrically connected at this storer.
3. the lcd panel test tool of rgb interface as claimed in claim 1 is characterized in that, said lcd panel test tool also comprises an interface module, and this interface module is electrically connected at this control module and backlight driver module.
4. the lcd panel test tool of rgb interface as claimed in claim 1 is characterized in that, said measurement jig also comprises a hummer, and this hummer is electrically connected at this microprocessor.
5. the lcd panel test tool of rgb interface as claimed in claim 1 is characterized in that, said measurement jig also comprises an interrupt switch, and this interrupt switch is electrically connected at this microprocessor.
6. the lcd panel test tool of rgb interface as claimed in claim 1 is characterized in that, said test module is the LPC2138 chip, and said control module is the SSD1963 chip.
7. the lcd panel test tool of rgb interface as claimed in claim 1 is characterized in that, said backlight driver module is the CP2123 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220085626 CN202487114U (en) | 2012-03-08 | 2012-03-08 | Liquid crystal display testing jig of RGB (Red, Green, Blue) interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220085626 CN202487114U (en) | 2012-03-08 | 2012-03-08 | Liquid crystal display testing jig of RGB (Red, Green, Blue) interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202487114U true CN202487114U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220085626 Expired - Fee Related CN202487114U (en) | 2012-03-08 | 2012-03-08 | Liquid crystal display testing jig of RGB (Red, Green, Blue) interface |
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| CN (1) | CN202487114U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920493A (en) * | 2017-04-07 | 2017-07-04 | 深圳市帝晶光电科技有限公司 | A kind of liquid crystal screen Cell method of testings of High voltage output |
| CN106997743A (en) * | 2017-06-02 | 2017-08-01 | 江苏久正光电有限公司 | A kind of test device of Thin Film Transistor-LCD |
-
2012
- 2012-03-08 CN CN 201220085626 patent/CN202487114U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920493A (en) * | 2017-04-07 | 2017-07-04 | 深圳市帝晶光电科技有限公司 | A kind of liquid crystal screen Cell method of testings of High voltage output |
| CN106997743A (en) * | 2017-06-02 | 2017-08-01 | 江苏久正光电有限公司 | A kind of test device of Thin Film Transistor-LCD |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180918 Address after: 523000 7 Bai Ye Avenue, 100 industrial town, Liaobu Town, Dongguan, Guangdong. Patentee after: Guangdong Jinlong electromechanical Co., Ltd. Address before: 214000 Jinxi Road, Wuxi City, Jiangsu Province, No. 100 Patentee before: Wuxi Booyi Optoelectronics Science & Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20190308 |