CN203616547U - Test system of liquid crystal display module - Google Patents
Test system of liquid crystal display module Download PDFInfo
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- CN203616547U CN203616547U CN201320844404.XU CN201320844404U CN203616547U CN 203616547 U CN203616547 U CN 203616547U CN 201320844404 U CN201320844404 U CN 201320844404U CN 203616547 U CN203616547 U CN 203616547U
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- 238000012360 testing method Methods 0.000 title claims abstract description 57
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 44
- 230000001360 synchronised effect Effects 0.000 claims abstract description 12
- 239000013078 crystal Substances 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000015654 memory Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model discloses a test system of a liquid crystal display module. The test system comprises an FPGA core board, a series flash memory and a port converting module, wherein the FPGA core board comprises an FPGA chip, a synchronous dynamic random access memory, a JTAG downloading port, an expansion input and output port and a series external port, and the synchronous dynamic random access memory, the JTAG downloading port, the expansion input and output port and the series external port are connected with the FPGA chip; the series flash memory is connected with the FPGA core board through the series external port; the port converting module is connected with the FPGA core board through the expansion input and output port and used for converting test data output by the FPGA core board into MIPI data signals; the expansion input and output port is also used for being directly connected with the liquid crystal display module to be tested. According to the test system, the liquid crystal display module with multiple ports can be tested by adopting the port converting module, the requirement for transmission speed of a high-resolution liquid crystal display screen can be met by adopting the synchronous dynamic random access memory for transmitting display data, and therefore the test system is used for outputting the high-speed display data and testing the liquid crystal display module with the multiple ports.
Description
Technical field
The utility model relates to liquid crystal display module technical field of measurement and test, particularly relates to a kind of test macro of liquid crystal display module.
Background technology
Along with the fast development of smart mobile phone and improving constantly of user's request, the display screen of smart mobile phone is towards large scale, high-resolution future development.
The screen size of the smart mobile phone of 2011 mainly concentrates on 3.5～4.3 inches of left and right, the main flow resolution of high-end mobile phone also only reaches WVGA(480 × 800) standard, the data-interface of liquid crystal display module is mainly also that MCU/RGB interface is main, and the pixel of mobile phone camera is also mainly below 500W.But subsequently, the resolution of LCDs has reached " retina (Retina) " rank (960 × 640), camera pixel has also reached 800W.
Along with the lifting of pixel quantity, the data that the data-interface of liquid crystal display module need to transmit will inevitably increase considerably.Image with the color depth that shows 60Hz frame frequency, 24 bits calculates, the resolution of WVGA rank, and the data-interface of liquid crystal display module transmits data only need to reach 552Mbps, and MCU/RGB interface can also meet transmission demand.If but display resolution is 960 × 640, data transfer rate under so identical display effect need to reach 884Mbps, further, if resolution has reached full HD (FHD, resolution is 1920 × 1080) rank, data transfer rate need to reach 3Gbps rank, and now CPU/RGB interface can not meet data transfer needs.
For this reason, mobile phone vendor commercial city generally adopts MIPI(Mobile Industry Processor Interface, mobile industrial processor interface) meet the data transfer needs of full HD even more high-resolution LCDs.
The test of liquid crystal display module is the test carried out after it is produced, before assembling, to verify whether liquid crystal display module meets product requirement.In the test of traditional liquid crystal display module, substantially be take 51 single-chip microcomputer platforms or ARM platform as basis, collocation various interface conversion chip is realized and the test of liquid crystal display module that possesses various interface, and these interfaces comprise MCU interface, rgb interface and MIPI interface etc.Due to the speed restriction of test platform itself, for the test of the liquid crystal display module of high resolving power (960 × 640), ultrahigh resolution (1920 × 1080), can not finely meet testing requirement.Traditional general way is to reduce the quantity that transmits data, such as reducing frame frequency (as being reduced to 40Hz from 60Hz), or reduces color depth (as being reduced to every pixel 16 bits from every pixel 24 bits).This mode can not be tested the highest display effect of liquid crystal display module.
Utility model content
Based on this, be necessary to provide a kind of the liquid crystal display module test macro that shows at a high speed data output can be provided.
A test macro for liquid crystal display module, comprising:
Fpga core plate, comprises fpga chip and the synchronous DRAM being connected with described fpga chip, JTAG download interface, expansion IO interface and Serial Peripheral Interface (SPI);
Serial flash, is connected with described fpga core plate by described Serial Peripheral Interface (SPI);
Interface modular converter, is connected with described fpga core plate by described expansion IO interface, is MIPI data-signal for the test data conversion that fpga core plate is exported; Described expansion IO interface is also for being directly connected with liquid crystal display module to be tested;
Described fpga core plate also by JTAG download interface from outside download configuration file and be stored in described serial flash; Described fpga core plate is loaded into the demonstration data corresponding with liquid crystal display module in described synchronous DRAM according to described configuration file in the time testing, and exports described demonstration data by described expansion IO interface in test process.
In an embodiment, described fpga core plate also comprises USB serial communication circuit therein, and described USB serial communication circuit comprises USB interface and chip CP2102.
In an embodiment, described fpga core plate also comprises RS232 serial communication circuit therein, and RS232 serial communication circuit comprises RS232 interface and chip MAX3232.
In an embodiment, described fpga core plate also comprises extension storage circuit therein, for connecting SD card.
In an embodiment, also comprise the crystal oscillating circuit being connected with fpga core plate by crystal oscillator interface therein, described crystal oscillating circuit comprises crystal oscillator chip OSC5X7.
Therein in an embodiment, be also included as the power circuit of described fpga core plate power supply, described power circuit comprises provides the power supply chip MP1428 of 3.3V and 1.2V voltage, the power supply chip TPS51116 of 1.8V and 0.9V voltage is provided.
In an embodiment, also comprise testing control module therein, be connected with described JTAG download interface, for to described fpga core plate input configuration file with control test process.
Above-mentioned test macro adopts interface modular converter to realize the liquid crystal display module of multiple interfaces is tested, adopt synchronous DRAM transmitting display data can reach the transmission speed requirement that meets high-resolution LCDs, therefore above-mentioned test macro provides and shows at a high speed data output and the liquid crystal display module of multiple interfaces is tested.
Accompanying drawing explanation
Fig. 1 adopts the test macro of an embodiment liquid crystal display module to be carried out to the schematic diagram of connecting test;
Fig. 2 is the module map of the test macro of an embodiment;
Fig. 3 is crystal oscillating circuit schematic diagram;
Fig. 4 is the USB serial communication circuit schematic diagram in Fig. 3;
Fig. 5 is the RS232 serial communication circuit schematic diagram in Fig. 3;
Fig. 6 is the power circuit principle figure in Fig. 3.
Embodiment
As shown in Figure 1, for adopting the test macro of an embodiment liquid crystal display module to be carried out to the schematic diagram of connecting test.This test macro 10 comprises fpga core plate 100, and fpga core plate 100 has expansion IO interface 140.Test macro 10 is connected with liquid crystal display module 20 by this expansion IO interface 140.Fpga core plate 100 also can be connected with liquid crystal display module 20 by interface modular converter 300 simultaneously.The exportable data that meet MCU interface, RBG interface and SPI interface protocol of expansion IO interface 140, interface modular converter 300 can be converted to MIPI interface data by MCU interface, RBG interface and SPI interface data.Therefore liquid crystal display module 20 to be tested can be the liquid crystal display module with MCU interface, RBG interface, SPI interface and MIPI interface.Therefore test macro 10 can be realized the liquid crystal display module of multiple interfaces is tested.
Below will be further described test macro 10.Please refer to Fig. 2, test macro 10 comprises fpga core plate 100, serial flash 200, interface modular converter 300, crystal oscillating circuit 400, power circuit 500 and testing control module 600.Fpga core plate 100 is connected with serial flash 200, interface modular converter 300, crystal oscillating circuit 400, power circuit 500, testing control module 600 respectively.
Synchronous DRAM (SDRAM) 120, JTAG download interface 130, expansion IO interface 140, Serial Peripheral Interface (SPI) (SPI) 150, crystal oscillator interface 160, USB serial communication circuit 170, RS232 serial communication circuit 180 and extension storage circuit 190 that fpga core plate 100 comprises fpga chip 110, is connected with fpga chip 110.
Fpga chip 110 is data processing units of fpga core plate 100, processes from the instruction of the configuration file of outside input.
Synchronous DRAM 120 is run-time memories of fpga core plate 100, has very fast data rate, than 51 traditional single-chip microcomputer platforms or the running memory unit of ARM platform, has data rate faster.In the present embodiment, this synchronous DRAM 120 is DDR2SDRAM, and its maximum data transfer rate can reach 9.6Gbps, and the data that can meet high-resolution liquid crystal display screen completely transmit requirement.Therefore the test macro 10 of the present embodiment can meet the test request of high-resolution liquid crystal display screen.
JTAG download interface 130 is connected with testing control module 600.Testing control module 600 writes configuration file by JTAG download interface 130 to the storage unit of fpga core plate 100, realizes the programming Control to fpga core plate.In the present embodiment, the storage unit of fpga core plate 100 is the serial flash 200 that access by Serial Peripheral Interface (SPI) 150.
USB serial communication circuit 170 obtains the demonstration data of USB device for connecting outside USB device.Please refer to Fig. 4, and in conjunction with Fig. 2, USB serial communication circuit 170 comprises USB interface, chip CP2102 and peripheral circuit thereof.
RS232 serial communication circuit 180 is for connecting external unit, and for example computer installation, obtains the demonstration data that computer installation is inputted.Please refer to Fig. 5, and in conjunction with Fig. 2, RS232 serial communication circuit comprises RS232 interface, chip MAX3232 and peripheral circuit thereof.
When test, fpga core plate 100 by JTAG download interface 130 from testing control module 600 download configuration file and be stored in serial flash 200, according to described configuration file, the demonstration data corresponding with liquid crystal display module 20 are loaded in synchronous DRAM 120, and export described demonstration data by expansion IO interface 140 in test process.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (7)
1. a test macro for liquid crystal display module, comprising:
Fpga core plate, comprises fpga chip and the synchronous DRAM being connected with described fpga chip, JTAG download interface, expansion IO interface and Serial Peripheral Interface (SPI);
Serial flash, is connected with described fpga core plate by described Serial Peripheral Interface (SPI);
Interface modular converter, is connected with described fpga core plate by described expansion IO interface, is MIPI data-signal for the test data conversion that fpga core plate is exported; Described expansion IO interface is also for being directly connected with liquid crystal display module to be tested;
Described fpga core plate also by JTAG download interface from outside download configuration file and be stored in described serial flash; Described fpga core plate is loaded into the demonstration data corresponding with liquid crystal display module in described synchronous DRAM according to described configuration file in the time testing, and exports described demonstration data by described expansion IO interface in test process.
2. the test macro of liquid crystal display module according to claim 1, is characterized in that, described fpga core plate also comprises USB serial communication circuit, and described USB serial communication circuit comprises USB interface and chip CP2102.
3. the test macro of liquid crystal display module according to claim 1, is characterized in that, described fpga core plate also comprises RS232 serial communication circuit, and RS232 serial communication circuit comprises RS232 interface and chip MAX3232.
4. the test macro of liquid crystal display module according to claim 1, is characterized in that, described fpga core plate also comprises extension storage circuit, for connecting SD card.
5. the test macro of liquid crystal display module according to claim 1, is characterized in that, also comprises the crystal oscillating circuit being connected with fpga core plate by crystal oscillator interface, and described crystal oscillating circuit comprises crystal oscillator chip OSC5X7.
6. the test macro of liquid crystal display module according to claim 1, it is characterized in that, also be included as the power circuit of described fpga core plate power supply, described power circuit comprises provides the power supply chip MP1428 of 3.3V and 1.2V voltage, the power supply chip TPS51116 of 1.8V and 0.9V voltage is provided.
7. the test macro of liquid crystal display module according to claim 1, is characterized in that, also comprises testing control module, be connected with described JTAG download interface, for to described fpga core plate input configuration file with control test process.
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| CN201320844404.XU CN203616547U (en) | 2013-12-19 | 2013-12-19 | Test system of liquid crystal display module |
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| CN201320844404.XU CN203616547U (en) | 2013-12-19 | 2013-12-19 | Test system of liquid crystal display module |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104517554A (en) * | 2014-12-17 | 2015-04-15 | 武汉精测电子技术股份有限公司 | Vcom (voltage of common electrode) adjustment device and method of MIPI (mobile industry processor interface) liquid crystal module on basis of FPGA (field programmable gate array) |
| 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 |
| CN104616610A (en) * | 2014-06-04 | 2015-05-13 | 深圳市显创光电有限公司 | Method and system for testing high-performance liquid-crystal display module |
| 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 |
| CN105427773A (en) * | 2015-11-24 | 2016-03-23 | 昆山龙腾光电有限公司 | Aging testing system for liquid crystal display modules |
| CN106652864A (en) * | 2017-03-08 | 2017-05-10 | 深圳市帝晶光电科技有限公司 | Visual liquid crystal display operation system |
| CN107767836A (en) * | 2017-12-08 | 2018-03-06 | 武汉精测电子集团股份有限公司 | A kind of liquid crystal module realized based on FPGA opens the method and device of electric and powered-down sequential |
| CN107799042A (en) * | 2017-11-02 | 2018-03-13 | 深圳同兴达科技股份有限公司 | A kind of liquid crystal display die set test board |
| CN108109567A (en) * | 2017-12-27 | 2018-06-01 | 苏州华兴源创电子科技有限公司 | A kind of LCD module group aging test device and include its equipment |
| CN108172153A (en) * | 2017-12-27 | 2018-06-15 | 苏州华兴源创电子科技有限公司 | A kind of LCD module group aging test device and include its equipment |
| CN108510921A (en) * | 2017-12-29 | 2018-09-07 | 学校法人金泉大学 | LCD module detecting system |
| CN109087686A (en) * | 2018-08-30 | 2018-12-25 | 武汉精鸿电子技术有限公司 | A kind of semiconductor memory aging testing system and method |
| CN109461395A (en) * | 2018-11-07 | 2019-03-12 | 中国电子科技集团公司第二十八研究所 | A kind of display facility information hand-held analyzer and application method |
| CN109817132A (en) * | 2019-02-22 | 2019-05-28 | 重庆两江联创电子有限公司 | Liquid crystal display die set test board |
| CN109917571A (en) * | 2019-04-19 | 2019-06-21 | 广东省汕尾市质量计量监督检测所 | A kind of liquid crystal display device photoelectric parameter detection interface system |
| CN110022356A (en) * | 2019-03-08 | 2019-07-16 | 北京三快在线科技有限公司 | Distributed system and unmanned equipment with the distributed system |
| CN111402771A (en) * | 2020-05-12 | 2020-07-10 | 广东晟合技术有限公司 | Detection equipment for display driving chip and display module |
| CN111653248A (en) * | 2020-07-07 | 2020-09-11 | 蚌埠国显科技有限公司 | Self-adaptive driving display device of liquid crystal display module |
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2013
- 2013-12-19 CN CN201320844404.XU patent/CN203616547U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104616610A (en) * | 2014-06-04 | 2015-05-13 | 深圳市显创光电有限公司 | Method and system for testing high-performance liquid-crystal display module |
| 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 |
| CN104517554A (en) * | 2014-12-17 | 2015-04-15 | 武汉精测电子技术股份有限公司 | Vcom (voltage of common electrode) adjustment device and method of MIPI (mobile industry processor interface) liquid crystal module on basis of FPGA (field programmable gate array) |
| 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 |
| 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 |
| 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 |
| CN105427773A (en) * | 2015-11-24 | 2016-03-23 | 昆山龙腾光电有限公司 | Aging testing system for liquid crystal display modules |
| CN106652864A (en) * | 2017-03-08 | 2017-05-10 | 深圳市帝晶光电科技有限公司 | Visual liquid crystal display operation system |
| CN107799042A (en) * | 2017-11-02 | 2018-03-13 | 深圳同兴达科技股份有限公司 | A kind of liquid crystal display die set test board |
| CN107767836A (en) * | 2017-12-08 | 2018-03-06 | 武汉精测电子集团股份有限公司 | A kind of liquid crystal module realized based on FPGA opens the method and device of electric and powered-down sequential |
| CN107767836B (en) * | 2017-12-08 | 2021-12-17 | 武汉精测电子集团股份有限公司 | Method and device for realizing power-on and power-off time sequence of liquid crystal module based on FPGA |
| CN108172153B (en) * | 2017-12-27 | 2021-08-13 | 苏州华兴源创科技股份有限公司 | Liquid crystal module aging testing device and equipment comprising same |
| CN108109567A (en) * | 2017-12-27 | 2018-06-01 | 苏州华兴源创电子科技有限公司 | A kind of LCD module group aging test device and include its equipment |
| CN108172153A (en) * | 2017-12-27 | 2018-06-15 | 苏州华兴源创电子科技有限公司 | A kind of LCD module group aging test device and include its equipment |
| CN108510921A (en) * | 2017-12-29 | 2018-09-07 | 学校法人金泉大学 | LCD module detecting system |
| CN109087686A (en) * | 2018-08-30 | 2018-12-25 | 武汉精鸿电子技术有限公司 | A kind of semiconductor memory aging testing system and method |
| CN109461395A (en) * | 2018-11-07 | 2019-03-12 | 中国电子科技集团公司第二十八研究所 | A kind of display facility information hand-held analyzer and application method |
| CN109817132A (en) * | 2019-02-22 | 2019-05-28 | 重庆两江联创电子有限公司 | Liquid crystal display die set test board |
| CN110022356A (en) * | 2019-03-08 | 2019-07-16 | 北京三快在线科技有限公司 | Distributed system and unmanned equipment with the distributed system |
| CN110022356B (en) * | 2019-03-08 | 2021-11-30 | 北京三快在线科技有限公司 | Distributed system and unmanned equipment with same |
| CN109917571A (en) * | 2019-04-19 | 2019-06-21 | 广东省汕尾市质量计量监督检测所 | A kind of liquid crystal display device photoelectric parameter detection interface system |
| CN109917571B (en) * | 2019-04-19 | 2024-05-28 | 广东省汕尾市质量计量监督检测所 | Photoelectric parameter detection interface system of liquid crystal display device |
| CN111402771A (en) * | 2020-05-12 | 2020-07-10 | 广东晟合技术有限公司 | Detection equipment for display driving chip and display module |
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Address after: 516003 Guangdong province Huizhou Zhongkai hi tech Development Zone No. 23 District Co-patentee after: HUIZHOU TECHNE Corp. Patentee after: CHINA DISPLAY OPTOELECTRONICS TECHNOLOGY (HUIZHOU) Co.,Ltd. Address before: 516003 Guangdong province Huizhou Jiangbei Road No. 21 Yunshan Yunshan Industrial Zone No. nine TCL Co-patentee before: HUIZHOU TECHNE Corp. Patentee before: TCL DISPLAY TECHNOLOGY (HUIZHOU) Co.,Ltd. |
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Effective date of registration: 20180830 Address after: 516003 Zhongkai hi tech Development Zone 23, Huizhou, Guangdong Patentee after: CHINA DISPLAY OPTOELECTRONICS TECHNOLOGY (HUIZHOU) Co.,Ltd. Address before: 516003 Zhongkai hi tech Development Zone 23, Huizhou, Guangdong Co-patentee before: HUIZHOU TECHNE Corp. Patentee before: CHINA DISPLAY OPTOELECTRONICS TECHNOLOGY (HUIZHOU) Co.,Ltd. |
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