CN102446477A - Liquid crystal module test device with display port (DP) interface and test method thereof - Google Patents
Liquid crystal module test device with display port (DP) interface and test method thereof Download PDFInfo
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Abstract
The invention discloses a liquid crystal module test device with a display port (DP) interface and a test method thereof, which relate to the test field of liquid crystal modules. The liquid crystal module test device with the DP interface comprises a power supply processing unit, a field programmable gate array signal processing unit and a central processing unit (CPU) control unit, wherein the power supply processing unit and the field programmable gate array signal processing unit are connected with one liquid crystal module test interface; the liquid crystal module test interface is connected with a liquid crystal module to be tested; the power supply processing unit comprises a power supply processing module and a light emitting diode (LED) driving module; the CPU control unit and the field programmable gate array signal processing unit are both connected with one DP coding module which outputs a signal to the liquid crystal module to be tested; and the field programmable gate array signal processing unit comprises a built-in signal module, a low-voltage differential signaling decoding module and a low-voltage differential signaling coding module. According to the test device and the test method, a low-voltage differential signaling (LVDS) interface and the DP interface are simultaneously provided, an external input test signal and a built-in test signal are simultaneously supported, and LED backlight driving output is provided.
Description
Technical field
The present invention relates to the field tests of liquid crystal module, specifically is a kind of liquid crystal module proving installation and method of testing of the DP of having interface.
Background technology
LCD (Liquid Crystal Display; LCD) comprises LED (Light Emitting Diode; Light emitting diode) backlight liquid crystal display and CCFL (Cold Cathode Fluorescent Lamp, cold cathode fluorescent lamp pipe) backlight liquid crystal display.LCD; Particularly the LED-backlit LCD has frivolous, plurality of advantages such as power consumption is low, radiation is little, screen flicker free, rich color; Along with its technology reaches its maturity, the main product function admirable, the LED-backlit LCD has occupied increasing market share.The primary clustering of LCD is liquid crystal module (LCD Module), and liquid crystal module interconnected signal adopts LVDS (Low-Voltage Differential Signaling, Low Voltage Differential Signal) or DP (DisplayPort, display interface) interface mode.The DP interface adds the support to the transmission of high definition audio signal in transmission video signal, support simultaneously higher resolution and refresh rate can directly drive panel, saves a large amount of circuitry complexity and space.
Need carry out strict test verification when liquid crystal module is produced, the testing instruments of employing are the liquid crystal module proving installation.Because the progressively scale of DP interface is used; Proving installation has been proposed new demand; Need support the LVDS interface of present widespread usage and the DP interface used of scale progressively simultaneously; Along with the mechanization degree of dull and stereotyped producer's product production line is increasingly high, also increasingly high simultaneously to the requirement of liquid crystal module performance test apparatus.
In process, need switch different interface signal types according to different liquid crystal module usually at present, switch outside input test signal source and built-in testing signal source according to the application scenario needs simultaneously the liquid crystal module performance test.Yet traditional liquid crystal module testing apparatus is owing to the restriction of design architecture complexity and special chip use, and function singleness can only be supported the LVDS interface; Can not support LVDS interface and DP interface simultaneously; Can not support outside input test signal source and built-in testing signal source simultaneously, traditional liquid crystal module proving installation does not have built-in liquid crystal module LED-backlit to drive, and perhaps need add the conversion that new equipment is realized interface; The not only wiring of this type device, complicated operation, the application scenario is single; Also possibly cause new equipment input, the efficient that greatly reduces test and produce has increased testing cost, and is unfavorable for liquid crystal module is carried out reliable automatic test and changed the line of production fast.
Summary of the invention
To the defective that exists in the prior art; The object of the present invention is to provide a kind of liquid crystal module proving installation and method of testing of the DP of having interface; LVDS interface and DP interface can be provided simultaneously, support outside input test signal and built-in testing signal simultaneously, and can quick automatic switching; Provide LED-backlit to drive output, liquid crystal module proving installation integrated level is high, practices thrift testing cost, and is simple to operate, promotes testing efficiency and test fiduciary level, promotes the production efficiency and the product percent of pass of enterprise.
For reaching above purpose; The present invention provides a kind of liquid crystal module proving installation of the DP of having interface; Comprise power supply processing unit, field programmable gate array signal processing unit, CPU control module; The power supply processing unit is connected a liquid crystal module test interface jointly with the field programmable gate array signal processing unit; The liquid crystal module test interface connects LCD module under test; The power supply processing unit comprises power supply processing module that links to each other with the CPU control module and the LED driver module that exports the liquid crystal module test interface to; The Low Voltage Differential Signal coding module that the common DP coding module that connects to LCD module under test output signal of CPU control module, field programmable gate array signal processing unit, field programmable gate array signal processing unit comprise the bist signal module that links to each other with the CPU control module, the Low Voltage Differential Signal decoder module that receives the external testing signal and export signal to LCD module under test.
On the basis of technique scheme; Said power supply processing unit also comprises liquid crystal module power module and the device supply module that is used for supplying power; Power supply processing module is regulated the required power supply of test, after liquid crystal module power module and the processing of LED driver module, exports to the liquid crystal module test interface.
On the basis of technique scheme; Said CPU control module comprises picture signal processing module, CPU module, module Card read/write module and the man-machine interface that links to each other successively; The CPU module is carried out initialization to total system when powering on, read the parameter information of LCD module under test, and the picture signal processing module connects said bist signal module; Module Card read/write module connects the DP coding module, and LCD module under test information is write and compares.
On the basis of technique scheme, said man-machine interface connects outer computer or control end.
On the basis of technique scheme; The detecting module that said field programmable gate array signal processing unit also comprises the input buffer module that links to each other with the Low Voltage Differential Signal decoder module, the bist signal cache module that links to each other with the bist signal module, all links to each other with input buffer module and bist signal cache module; The CPU control module sends graphical information to bist signal module and produces the built-in testing signal; The Low Voltage Differential Signal decoder module is decoded to the external testing signal that receives; Through the input buffer module buffer memory, input buffer module and bist signal cache module are detected processing by detecting module.
On the basis of technique scheme, comprise the picture signal processing module in the said CPU control module, picture signal processing module process graphics information is sent out in the bist signal module and is produced the built-in testing signal according to the LCD module under test time sequence information.
On the basis of technique scheme; Said field programmable gate array signal processing unit also comprises continuous signal exchange module and signal processing module; Input buffer module, bist signal cache module and detecting module all are connected the signal exchange module; Signal processing module connects Low Voltage Differential Signal coding module and DP coding module respectively, and the signal exchange module is switched test signal automatically, and delivers to signal processing module and handle; Low Voltage Differential Signal coding module and DP coding module are encoded to the signal of signal processing module, export the liquid crystal module test interface to.
The present invention also provides a kind of method of testing based on said liquid crystal module proving installation, comprises step:
The CPU module reads the parameter information of LCD module under test, regulates the required power supply of test by power supply processing module, after liquid crystal module power module and the processing of LED driver module, waits for LVDS test signal and the foundation of DP test signal;
Picture signal processing module process graphics information; Send out in the bist signal module and produce the built-in testing signal; The Low Voltage Differential Signal decoder module is decoded to the external testing signal that receives, and through the input buffer module buffer memory, by detecting module input buffer module and bist signal cache module is detected processing; The control signal Switching Module carries out hand-off process to test signal automatically, and the feed signals processing module is carried out signal Processing;
Low Voltage Differential Signal coding module and DP coding module are encoded to the signal of signal processing module; Set up LVDS test signal and DP test signal; Export to the LCD module under test that the liquid crystal module test interface connects; Simultaneously the power supply processing module out-put supply is given said LCD module under test, and module Card read/write module writes and compares module information to be measured through the DP coding module, accomplishes the LCD module under test information setting of dispatching from the factory.
On the basis of technique scheme, the control signal Switching Module judges whether the data of external testing signal are effective, if effectively, switches to the data of external testing signal; If invalid, switch to the built-in testing figure.
On the basis of technique scheme, said power supply processing module is handled outside input power filter, and voltage just often begins power supply; When electric current just often, successively to the sampling of LCD module under test power supply and backlight electric power, when all being setting value; Wait for the foundation of LVDS test signal and DP test signal, after test signal is set up, open liquid crystal module power module monitoring current and backlight electric power monitoring current; Open the LED driver module,, light module to be measured to the LCD module under test power supply.
Beneficial effect of the present invention is:
1. the liquid crystal module proving installation that has the DP interface also comprises LVDS decoder module and LVDS coding module, and LVDS interface and DP interface are provided simultaneously, supports external testing signal and built-in testing signal, and can switch fast automatically;
2. the liquid crystal module proving installation that has the DP interface also comprises the LED driver module, provides the LED-backlit of LCD module under test to drive;
3. the integrated level height that has the liquid crystal module proving installation of DP interface; Realize the standalone feature module that a plurality of complex proprietary chips of existing design demand constitute, practiced thrift testing cost, simple to operate; Promote testing efficiency and test fiduciary level, promoted the production efficiency and the product percent of pass of enterprise.
Description of drawings
Fig. 1 has the structured flowchart of the liquid crystal module proving installation of DP interface for the embodiment of the invention;
Fig. 2 is the method for testing process flow diagram of embodiment among Fig. 1;
Fig. 3 is the process flow diagram of power supply processing unit among Fig. 1.
Reference numeral:
Power supply processing unit 1, power supply processing module 11, liquid crystal module power module 12, LED driver module 13, device supply module 14;
FPGA signal processing unit 2, LVDS decoder module 21, input buffer module 22, bist signal module 23, bist signal module 23, bist signal cache module 24, detecting module 25, signal exchange module 26, signal processing module 27, LVDS coding module 28;
CPU control module 3, picture signal processing module 31, CPU module 32, module Card read/write module 33, man-machine interface 34;
DP coding module 4;
Liquid crystal module test interface 5.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
As shown in Figure 1; The liquid crystal module proving installation that the present invention has the DP interface comprises power supply processing unit 1, FPGA (Field-Programmable Gate Array; Field programmable gate array) signal processing unit 2, CPU control module 3, DP coding module 4; Power supply processing unit 1, FPGA signal processing unit 2 and DP coding module 4 are connected to a liquid crystal module test interface 5, and liquid crystal module test interface 5 connects LCD module under test (figure does not show).
Said power supply processing unit 1 comprises the power supply processing module 11 that outside input power filter is handled; The liquid crystal module power module 12 that is connected with power supply processing module 11 respectively, LED driver module 13 and device supply module 14; The LCD module under test that liquid crystal module power module 12 output liquid crystal module power supplys connect for liquid crystal module test interface 5, the LCD module under test that LED driver module 13 output LED-backlits connect for liquid crystal module test interface 5.
Said CPU control module 3 comprises picture signal processing module 31, CPU module 32, module Card read/write module 33 and man-machine interface 34; CPU module 32 connects power supply processing module 11; Module Card read/write module 33 connects DP coding module 4, and man-machine interface 34 connects outer computer or control end.
Said FPGA signal processing unit 2 comprises LVDS decoder module 21, input buffer module 22, bist signal module 23, bist signal cache module 24, detecting module 25, signal exchange module 26, signal processing module 27, LVDS coding module 28; LVDS decoder module 21 receives the external testing signal; Connect input buffer module 22, detecting module 25 and bist signal cache module 24 successively; Bist signal module 23 links to each other with picture signal processing module 31; Input buffer module 22, detecting module 25 and bist signal cache module 24 all are connected signal exchange module 26, and signal exchange module 26 is connected to LVDS coding module 28 through signal processing module 27, and LVDS coding module 28 provides the LVDS test signal to liquid crystal module test interface 5.
Said DP coding module 4 output DP test signals are given liquid crystal module test interface 5, and liquid crystal module test interface 5 all offers LCD module under test with DP test signal, LED-backlit, liquid crystal module power supply, LVDS test signal.
As depicted in figs. 1 and 2, the present invention has the method for testing of the liquid crystal module proving installation of DP interface, comprises step:
S101.CPU module 32 is carried out initialization to total system when powering on.
S102.CPU module 32 reads in advance the parameter information (like resolution, power supply etc.) through the LCD module under test of man-machine interface 34 inputs.
S103. power supply processing module 11 is tested required power supplys with CPU module 32 common adjustings.
S104. judge whether power settings is normal,, then return S103 and continue to regulate power supply if undesired; If normal, get into S105.
S105., the LCD module under test sequential is set, i.e. necessary signal sequence during the LCD module under test operate as normal is set up the test signal sequential through 31 of picture signal processing modules in bist signal module 23;
S106. picture signal processing module 31 process graphics information are sent out in bist signal module 23 and are produced the built-in testing signal.
S107. bist signal cache module 24 produces the built-in testing figure.
The external testing signal of 21 pairs of receptions of S108.LVDS decoder module is decoded, and through input buffer module 22 buffer memorys, detects processing by 25 pairs of input buffer module of detecting module 22 and bist signal cache module 24.
Whether the data of S109. judging the external testing signal are effective, if effectively, get into S110; If invalid, get into S111.
S110. control signal Switching Module 26 switches to the data of external testing signal.
S111. control signal Switching Module 26 switches to the built-in testing figure.
S112. the data or the built-in testing figure of the external testing signal after 27 pairs of switchings of signal processing module are handled.
The signal of S113.LVDS coding module 28 and 4 pairs of signal processing modules 27 of DP coding module is encoded.
S114.LVDS coding module 28 and DP coding module 4 are opened LVDS and the DP test signal behind the coding, and liquid crystal module power module 12 and LED driver module 13 output liquid crystal module power supply and LED-backlit power supplys are lighted module to be measured.
S115. module Card read/write module 33 writes and compares through 4 pairs of module information to be measured of DP coding module, accomplishes the LCD module under test information checking that dispatches from the factory.
S116. detect LCD module under test.
In the present embodiment; Outside input power supply is a direct current 24V power supply; Power supply processing module 11 comprises power management chip, realizes overvoltage, under-voltage, overcurrent protection to the input power supply, two independent electric current and voltage sample circuit and two independent voltage-regulating circuit; Realize feedback, the adjustment control of liquid crystal module power supply and backlight electric power respectively; Realize that by the liquid crystal module power module DC-DC (DC/DC) conversion obtains needed 3V to the 12V direct supply of module work, realize that by the LED driver module DC-DC (DC/DC) conversion obtains the common backlight electric power of 5V to 24V, realize that by led drive circuit 12 string LED constant current sources drive simultaneously; Every crosstalk stream is 20 milliamperes, the highest 40V of driving voltage.
As shown in figures 1 and 3, the idiographic flow of power supply processing unit 1 is following:
S201. outside input 24V power supply.
S202. 11 pairs of power filters of power supply processing module are handled.
S203. judge whether voltage is normal,, wait for that voltage is normal, get into S204 if undesired, then locked.
S204. whole liquid crystal module proving installation is begun power supply.
S205. judge whether electric current is normal, if not, then powered-down is supplied with, and changes S204 over to; If then get into S206.
S206. power supply processing module 11 is sampled with the module power supply in 12 pairs of CPU modules 32 of liquid crystal module power module.
S207. judge whether voltage is that liquid crystal module power module 12 realizes that DC-DC (DC/DC) conversion obtains needed 3V to the 12V direct supply of module work, if not, then change S206 over to.
S208. carry out the backlight electric power sampling.
S209. judge whether voltage is that LED driver module 13 realizes that DC-DC (DC/DC) conversion obtains the common backlight electric power of 5V to 24V, if not, change S208 over to.
S210. judge whether LVDS test signal and DP test signal are set up, if not, then wait for the foundation of LVDS test signal and DP test signal.
S211. open module power supply monitoring electric current and backlight electric power monitoring current simultaneously.
S212. open LED driver module 13.
S213. supply power is given the LCD module under test that said liquid crystal module test interface 5 connects.
Present embodiment FPGA signal processing unit 2 utilizes the high velocity, low pressure differential interface of FPGA; Receive the external testing signal; According to standard LVDS vision signal rule; From serial LVDS data, parse display message, data useful signal, horizontal-drive signal, vertical synchronizing signal, and display message is carried out the pointwise buffer memory, guarantee the validity and the continuity of data.Pictorial information and module time sequence information that FPGA signal processing unit 2 sends through outside versabus according to picture signal processing module 31 simultaneously; Set up display message, data useful signal, horizontal-drive signal, the vertical synchronizing signal of close beta signal, and display message is carried out the pointwise buffer memory.Detecting module 25 is through extracting the effective information in the input buffer module 22; Data are analyzed; Whether according to the judgement of module information is when the Pretesting valid data; If then extract these valid data, otherwise extract the built-in testing signal data, realize the automatic switchover of testing source to signal processing module to signal processing module.Signal processing module 27 is handled display message by the requirement of LVDS coding module 28 and DP coding module 4, export 2 tunnel parallel display message, send respectively and LVDS coding module 28 and DP coding module 4.LVDS coding module 28 through standard LVDS vision signal rule encoding, is sent the display message that receives by the high velocity, low pressure differential interface of FPGA, realize the output of LVDS test signal.DP coding module 4 is encoded the display message that receives according to the module physical interface information (demand pairs, speed) that module reads, coding criterion is DisplayPort 1.1, realizes the output of DP test signal.
The present invention is not limited to above-mentioned embodiment, for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, and these improvement and retouching also are regarded as within protection scope of the present invention.The content of not doing in this instructions to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (10)
1. liquid crystal module proving installation that has the DP interface; Comprise power supply processing unit (1), field programmable gate array signal processing unit (2), CPU control module (3); Power supply processing unit (1) is connected a liquid crystal module test interface (5) jointly with field programmable gate array signal processing unit (2); Liquid crystal module test interface (5) connects LCD module under test; It is characterized in that: power supply processing unit (1) comprises power supply processing module (11) that links to each other with CPU control module (3) and the LED driver module (13) that exports liquid crystal module test interface (5) to; CPU control module (3), field programmable gate array signal processing unit (2) connect a DP coding module (4) to LCD module under test output signal jointly, the Low Voltage Differential Signal coding module (28) that field programmable gate array signal processing unit (2) comprises the bist signal module (23) that links to each other with CPU control module (3), the Low Voltage Differential Signal decoder module (21) that receives the external testing signal and exports signal to LCD module under test.
2. the liquid crystal module proving installation that has the DP interface as claimed in claim 1; It is characterized in that: the device supply module (14) that said power supply processing unit (1) also comprises liquid crystal module power module (12) and is used for supplying power; Power supply processing module (11) is regulated the required power supply of test, after liquid crystal module power module (12) and LED driver module (13) processing, exports to liquid crystal module test interface (5).
3. the liquid crystal module proving installation that has the DP interface as claimed in claim 1; It is characterized in that: said CPU control module (3) comprises picture signal processing module (31), CPU module (32), module Card read/write module (33) and the man-machine interface (34) that links to each other successively; CPU module (32) is carried out initialization to total system when powering on; Read the parameter information of LCD module under test; Picture signal processing module (31) connects said bist signal module (23), and module Card read/write module (33) connects DP coding module (4), and LCD module under test information is write and compares.
4. the liquid crystal module proving installation that has the DP interface as claimed in claim 2 is characterized in that: said man-machine interface (34) connects outer computer or control end.
5. the liquid crystal module proving installation that has the DP interface as claimed in claim 1; It is characterized in that: the detecting module (25) that said field programmable gate array signal processing unit (2) also comprises the input buffer module (22) that links to each other with Low Voltage Differential Signal decoder module (21), the bist signal cache module (24) that links to each other with bist signal module (23), all links to each other with input buffer module (22) and bist signal cache module (24); CPU control module (3) sends graphical information to bist signal module (23) and produces the built-in testing signal; Low Voltage Differential Signal decoder module (21) is decoded to the external testing signal that receives; Through input buffer module (22) buffer memory, input buffer module (22) and bist signal cache module (24) are detected processing by detecting module (25).
6. the liquid crystal module proving installation that has the DP interface as claimed in claim 5; It is characterized in that: comprise picture signal processing module (31) in the said CPU control module (3); Picture signal processing module (31) process graphics information is sent out in bist signal module (23) and is produced the built-in testing signal according to the LCD module under test time sequence information.
7. the liquid crystal module proving installation that has the DP interface as claimed in claim 5; It is characterized in that: said field programmable gate array signal processing unit (2) also comprises continuous signal exchange module (26) and signal processing module (27); Input buffer module (22), bist signal cache module (24) and detecting module (25) all are connected signal exchange module (26); Signal processing module (27) connects Low Voltage Differential Signal coding module (28) and DP coding module (4) respectively; Signal exchange module (26) is switched test signal automatically; And deliver to signal processing module (27) and handle, Low Voltage Differential Signal coding module (28) and DP coding module (4) are encoded to the signal of signal processing module (27), export liquid crystal module test interface (5) to.
8. based on the method for testing of the said liquid crystal module proving installation of claim 1, it is characterized in that, comprise step:
CPU module (32) reads the parameter information of LCD module under test, regulates the required power supply of test by power supply processing module (11), after liquid crystal module power module (12) and LED driver module (13) processing, waits for LVDS test signal and the foundation of DP test signal;
Picture signal processing module (31) process graphics information; Send out in bist signal module (23) and produce the built-in testing signal; Low Voltage Differential Signal decoder module (21) is decoded to the external testing signal that receives, and through input buffer module (22) buffer memory, by detecting module (25) input buffer module (22) and bist signal cache module (24) is detected processing; Control signal Switching Module (26) carries out hand-off process to test signal automatically, and feed signals processing module (27) is carried out signal Processing;
Low Voltage Differential Signal coding module (28) and DP coding module (4) are encoded to the signal of signal processing module (27); Set up LVDS test signal and DP test signal; Export to the LCD module under test that liquid crystal module test interface (5) connects; Simultaneously power supply processing module (11) out-put supply is given said LCD module under test, and module Card read/write module (33) writes and compares module information to be measured through DP coding module (4), the completion LCD module under test information setting of dispatching from the factory.
9. like the method for testing of the said liquid crystal module proving installation of claim 8, it is characterized in that: signal exchange module (26) judges whether the data of external testing signal are effective, if effectively, switches to the data of external testing signal; If invalid, switch to the built-in testing figure.
10. like the method for testing of the said liquid crystal module proving installation of claim 8, it is characterized in that: said power supply processing module (11) is handled outside input power filter, and voltage just often; Begin power supply, when electric current just often, successively LCD module under test power supply and backlight electric power are sampled; When all being setting value, wait for the foundation of LVDS test signal and DP test signal, after test signal is set up; Open liquid crystal module power supply (12) module monitors electric current and backlight electric power monitoring current; Open LED driver module (4),, light module to be measured to the LCD module under test power supply.
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| CN109547712A (en) * | 2019-01-18 | 2019-03-29 | 深圳市巨潮科技股份有限公司 | DP signal distribution system based on FPGA |
| CN109857024A (en) * | 2019-02-01 | 2019-06-07 | 京微齐力(北京)科技有限公司 | The unit performance test method and System on Chip/SoC of artificial intelligence module |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431693A (en) * | 2007-11-05 | 2009-05-13 | 深圳Tcl新技术有限公司 | Screen distribution apparatus of panel TV |
| CN201382850Y (en) * | 2009-03-24 | 2010-01-13 | Tcl集团股份有限公司 | Test device for liquid crystal display module |
| US20100011249A1 (en) * | 2008-07-11 | 2010-01-14 | Samsung Electronics Co., Ltd. | Device for testing a function of a display port, and system and method for testing the same |
| CN201489794U (en) * | 2009-07-29 | 2010-05-26 | 比亚迪股份有限公司 | LCM testing device |
| CN101770089A (en) * | 2008-12-26 | 2010-07-07 | 京东方科技集团股份有限公司 | Liquid crystal display module tester |
| CN102054414A (en) * | 2010-11-28 | 2011-05-11 | 河海大学常州校区 | Program controlled liquid crystal module test image generating system and control method thereof |
| CN202058409U (en) * | 2011-03-14 | 2011-11-30 | 昆山精讯电子技术有限公司 | Automatic video signal and picture signal switching LCM test device |
-
2011
- 2011-12-30 CN CN2011104517437A patent/CN102446477B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431693A (en) * | 2007-11-05 | 2009-05-13 | 深圳Tcl新技术有限公司 | Screen distribution apparatus of panel TV |
| US20100011249A1 (en) * | 2008-07-11 | 2010-01-14 | Samsung Electronics Co., Ltd. | Device for testing a function of a display port, and system and method for testing the same |
| CN101770089A (en) * | 2008-12-26 | 2010-07-07 | 京东方科技集团股份有限公司 | Liquid crystal display module tester |
| CN201382850Y (en) * | 2009-03-24 | 2010-01-13 | Tcl集团股份有限公司 | Test device for liquid crystal display module |
| CN201489794U (en) * | 2009-07-29 | 2010-05-26 | 比亚迪股份有限公司 | LCM testing device |
| CN102054414A (en) * | 2010-11-28 | 2011-05-11 | 河海大学常州校区 | Program controlled liquid crystal module test image generating system and control method thereof |
| CN202058409U (en) * | 2011-03-14 | 2011-11-30 | 昆山精讯电子技术有限公司 | Automatic video signal and picture signal switching LCM test device |
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050073B (en) * | 2012-12-26 | 2015-08-12 | 武汉精测电子技术股份有限公司 | DP decoding and the self-adjusting liquid crystal module method of testing of resolution and device |
| CN103050073A (en) * | 2012-12-26 | 2013-04-17 | 武汉精测电子技术有限公司 | DP (Digital Processing) decoding and automatic resolution adjusting liquid crystal display module testing method and device |
| CN103794189A (en) * | 2014-02-27 | 2014-05-14 | 刘兴宾 | Liquid crystal display panel sequential control module |
| CN104034995A (en) * | 2014-05-15 | 2014-09-10 | 武汉精测电子技术股份有限公司 | LVDS signal open-circuit and short-circuit detection device and open-circuit and short-circuit detection method |
| CN104034995B (en) * | 2014-05-15 | 2016-09-21 | 武汉精测电子技术股份有限公司 | LVDS signal is opened short-circuit detecting device and opens method for detecting short circuit |
| CN104217667A (en) * | 2014-09-05 | 2014-12-17 | 武汉精测电子技术股份有限公司 | Test method and test system for implementing COMMAND-mode MIPI (mobile industry processor interface) modules |
| CN104575342A (en) * | 2014-12-30 | 2015-04-29 | 武汉精测电子技术股份有限公司 | Integral liquid crystal module testing device |
| CN104575345A (en) * | 2015-01-15 | 2015-04-29 | 武汉精测电子技术股份有限公司 | OLED module test system and test method |
| CN104575345B (en) * | 2015-01-15 | 2017-02-01 | 武汉精测电子技术股份有限公司 | OLED module test system and test method |
| WO2017000849A1 (en) * | 2015-06-29 | 2017-01-05 | 武汉精测电子技术股份有限公司 | Method and system for converting lvds video signal into dp video signal |
| CN105116355A (en) * | 2015-09-15 | 2015-12-02 | 武汉精测电子技术股份有限公司 | LED module backlight lamp string detection device and detection method thereof |
| CN105304000A (en) * | 2015-09-23 | 2016-02-03 | 昆山龙腾光电有限公司 | Liquid crystal display module aging test system |
| 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 |
| KR20180072790A (en) * | 2015-10-23 | 2018-06-29 | 우한 징세 일렉트로닉 그룹 컴퍼니 리미티드 | Multi-channel display interface signal generation system of the shared protocol layer |
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| CN105376512A (en) * | 2015-11-18 | 2016-03-02 | 武汉精测电子技术股份有限公司 | Signal conversion device based on programmable logic device |
| CN105491318B (en) * | 2015-12-05 | 2018-11-27 | 武汉精测电子集团股份有限公司 | A kind of DP vision signal single channel turns the device and method of multichannel |
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| CN111831599A (en) * | 2019-04-22 | 2020-10-27 | 鸿富锦精密工业(武汉)有限公司 | Interface switching circuit and electronic device using same |
| CN110412782A (en) * | 2019-08-02 | 2019-11-05 | 湖南海诚宇信信息技术有限公司 | A kind of liquid crystal display device test macro and test method |
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| CN112509525A (en) * | 2020-12-02 | 2021-03-16 | Tcl华星光电技术有限公司 | Control method and control device for liquid crystal display backlight module |
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