CN204480644U - Display module EDID reading and writing data proving installation - Google Patents
Display module EDID reading and writing data proving installation Download PDFInfo
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- CN204480644U CN204480644U CN201520003542.4U CN201520003542U CN204480644U CN 204480644 U CN204480644 U CN 204480644U CN 201520003542 U CN201520003542 U CN 201520003542U CN 204480644 U CN204480644 U CN 204480644U
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Abstract
The utility model discloses a kind of display module EDID reading and writing data proving installation; power management module is powered respectively to MCU, display screen and keypad; MCU connects display screen; MCU connects keypad, and IO interface comprises extending display identification data chip power supply docking port, extending display identification data chip data line docking port, extending display identification data chip clock docking port, extending display identification data chip write-protect pin powered docking port, sequential control plate power supply docking port and sequential control plate earthing docking port.The utility model can solve that the testing efficiency that existing testing scheme brings is low, testing cost is higher and testing apparatus is not easy to problems such as moving and carry.
Description
Technical field
The utility model relates to display module technical field of measurement and test, refers to a kind of display module EDID reading and writing data proving installation particularly.
Background technology
EDID (Extended Display Identification Data, extending display identification data) a kind of display format specification being widely used in display module of being that International video frequency electronic standard association is organized to set up, it contains as supplier information, factory default is put, maximum image, color are arranged, frequency range and supported resolution etc. are about the parameter of display and performance thereof.The Main Function of EDID data allows image output device can export suitable picture signal to display module, and display module all will be tested through strict EDID read-write capability before dispatching from the factory.
At present, do not have special EDID reading and writing data functional test equipment, the test of display module EDID reading and writing data function is all realized by PC control display module testing apparatus, and this method of testing exists following defect:
1) the usual quality of display module testing apparatus is heavy, volume is large, is not easy to move and carry;
2) showing module testing apparatus needs collocation host computer to use, and operation steps is comparatively loaded down with trivial details, and testing efficiency is lower;
3) show module testing apparatus and matching used host computer cost higher, especially for the test of large batch of display module, can use and overlap testing apparatus more, significantly increase the input cost of product line.
Utility model content
The purpose of this utility model will provide a kind of display module EDID reading and writing data proving installation exactly, and this proving installation can solve that the testing efficiency that existing testing scheme brings is low, testing cost is higher and testing apparatus is not easy to problems such as moving and carry.
For realizing this object, display module EDID reading and writing data proving installation designed by the utility model, it is characterized in that: it comprises MCU (Micro Control Unit, micro-control unit), power management module, display screen, keypad and IO interface, described power management module is respectively to MCU, display screen and keypad are powered, the display output terminal of described MCU connects the display input end of display screen, the control signal input end of MCU connects the signal output part of keypad, described IO interface comprises extending display identification data chip power supply docking port, extending display identification data chip data line docking port, extending display identification data chip clock docking port, extending display identification data chip write-protect pin powered docking port, sequential control plate power supply docking port and sequential control plate earthing docking port, described extending display identification data chip data line docking port is connected the data communication interface of MCU with one end of extending display identification data chip clock docking port, described extending display identification data chip power supply docking port is all connected the power supply interface of MCU with one end of extending display identification data chip write-protect pin powered docking port,
One end of described sequential control plate power supply docking port connects the corresponding power signal output part of power management module, one end ground connection of sequential control plate earthing docking port.
The utility model realizes the EDID test function of display module to be measured mainly through MCU.There is provided pin voltage to the extending display identification data chip power supply docking port 5.1 of display module to be measured and extending display identification data chip write-protect pin powered docking port 5.4 by the power supply interface of MCU; after keypad input numerical value; by the IIC passage of MCU, the rear read operation of first write is performed to extending display identification data chip; and by the numeric feedback of reading to display screen, judged the read-write result of extending display identification data by the numerical value contrasting input and output.
The beneficial effects of the utility model:
1) improve testing efficiency: the utility model only comprises these five parts of MCU, power management module, display screen, keypad and IO interface, small volume, flexible operation, energising just can directly use, and need not spend a large amount of manpower Installation and Debugging; Integrated keypad and display screen make test result simple, intuitive more.
2) reduce product line production test cost: structure of the present utility model is simple, cost is low, the production test cost that display module produces line can be effectively reduced.
3) compatible strong: the utility model is by arranging above-mentioned IO interface, and the EDID that can adapt to various display module detects.
Accompanying drawing explanation
Fig. 1 is using state structured flowchart of the present utility model;
Wherein, 1-MCU, 2-power management module, 3-display screen, 4-keypad, 5-IO interface, 5.1-extending display identification data chip power supply docking port, 5.2-extending display identification data chip data line docking port, 5.3-extending display identification data chip clock docking port, 5.4-extending display identification data chip write-protect pin powered docking port, 5.5-sequential control plate power supply docking port, 5.6-sequential control plate earthing docking port, 6-display module to be measured, 7-iic bus.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Display module EDID reading and writing data proving installation as shown in Figure 1, it comprises MCU1, power management module 2, display screen 3, keypad 4 and IO interface 5, described power management module 2 is respectively to MCU1, display screen 3 and keypad 4 are powered, the display output terminal of described MCU1 connects the display input end of display screen 3, the control signal input end of MCU1 connects the signal output part of keypad 4, described IO interface 5 comprises extending display identification data chip power supply docking port 5.1 (other end of this interface is for connecting the extending display identification data chip power interface of display module 6 to be measured), extending display identification data chip data line docking port 5.2 (other end of this interface is for connecting the extending display identification data chip data line interface of display module 6 to be measured), extending display identification data chip clock docking port 5.3 (other end of this interface is for connecting the extending display identification data chip clock interface of display module 6 to be measured), extending display identification data chip write-protect pin powered docking port 5.4 (other end of this interface is for connecting the extending display identification data chip write-protect pin powered interface of display module 6 to be measured), sequential control plate power supply docking port 5.5 (other end of this interface is for connecting the sequential control plate power interface of display module 6 to be measured) and sequential control plate earthing docking port 5.6 (other end of this interface is for being connected the sequential control plate earthing interface of display module 6 to be measured), described extending display identification data chip data line docking port 5.2 is connected the data communication interface of MCU1 with one end of extending display identification data chip clock docking port 5.3, described extending display identification data chip power supply docking port 5.1 is all connected the power supply interface of MCU1 with one end of extending display identification data chip write-protect pin powered docking port 5.4,
One end of described sequential control plate power supply docking port 5.5 connects the corresponding power signal output part of power management module 2, one end ground connection of sequential control plate earthing docking port 5.6.
In technique scheme, one end of described extending display identification data chip data line docking port 5.2 and extending display identification data chip clock docking port 5.3 connects the data communication interface of MCU1 by iic bus 7 (Inter-Integrated Circuit, IC bus).
In technique scheme, the supply voltage of described MCU1 is 3.3V.
Above-mentioned power management module 2 is provided the voltage of 5V by external dc power, then power management module 2 is shunted by builtin voltage and is powered to MCU1, display screen 3, keypad 4 simultaneously, and, by the sequential control plate power supply docking port 5.5 of IO interface 5, the sequential control plate of display module 6 to be measured is powered, wherein, the voltage of supply MCU1 turns 3.3V chip NCP1117ST33 through 5V and converts 3.3V to, and the voltage supplying the sequential control plate of display module 6 to be measured turns 12V chip I B0512ls-1w through 5V and converts 12V to.
MCU1 in the utility model issues data by iic bus 7 pairs of extending display identification data chips, if data distributing failure, performs and again issues operation, issue display screen prompting " EDID writes unsuccessfully " unsuccessfully for three times, if data distributing success, then continue to perform extending display identification digital independent/comparison operation; If read value is consistent with issuing value comparison, display screen display " EDID read and write successfully ", if read value and issue value and contrast inconsistent, display screen display reminding " EIDI reads and writes unsuccessfully ".
For liquid crystal module EDID (24lc124 chip) readwrite tests:
1) the utility model device is connected with LCD module under test 6 signaling interface, guarantees that module VDD (sequential control plate power interface), EDID_WP (extending display identification data chip write-protect pin powered interface), EDID_VCC (extending display identification data chip power interface), EDID_SDA (extending display identification data chip data line interface), EDID_SCL (extending display identification data chip clock docking port), GND (sequential control plate earthing interface) six pins are corresponding with each pin of IO interface (5);
2) the utility model device is connected with external 5V direct supply, powers on;
3) module chip type is " 24lc124 ", EDID read-write mode is " manually ", select " start test ", input data " 11 12 13 14 15 16 17 1819 1a ", selection " write " button to use keypad 4 to configure;
4) " EDID writes successfully " after, select " reading/comparison " button pointed out by screen 3 to be shown;
6) MCU1 contrasts write value and read value automatically, if display screen 3 is pointed out " EDID reads and writes successfully "
Write value: " 11 12 13 14 15 16 17 18 19 1a ";
Read value: " 11 12 13 14 15 16 17 18 19 1a ";
Then liquid crystal module EDID read-write capability is normal; If display screen 3 is pointed out " EDID reads and writes unsuccessfully ", then liquid crystal module EDID read-write capability is abnormal.
The content that this instructions is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (3)
1. a display module EDID reading and writing data proving installation, it is characterized in that: it comprises MCU (1), power management module (2), display screen (3), keypad (4) and IO interface (5), described power management module (2) is respectively to MCU (1), display screen (3) and keypad (4) power supply, the display output terminal of described MCU (1) connects the display input end of display screen (3), the control signal input end of MCU (1) connects the signal output part of keypad (4), described IO interface (5) comprises extending display identification data chip power supply docking port (5.1), extending display identification data chip data line docking port (5.2), extending display identification data chip clock docking port (5.3), extending display identification data chip write-protect pin powered docking port (5.4), sequential control plate power supply docking port (5.5) and sequential control plate earthing docking port (5.6), described extending display identification data chip data line docking port (5.2) is connected the data communication interface of MCU (1) with one end of extending display identification data chip clock docking port (5.3), described extending display identification data chip power supply docking port (5.1) and one end of extending display identification data chip write-protect pin powered docking port (5.4) are all connected the power supply interface of MCU (1),
One end of described sequential control plate power supply docking port (5.5) connects the corresponding power signal output part of power management module (2), one end ground connection of sequential control plate earthing docking port (5.6).
2. display module EDID reading and writing data proving installation according to claim 1, is characterized in that: the data communication interface that iic bus (7) is connected MCU (1) is passed through in described extending display identification data chip data line docking port (5.2) and one end of extending display identification data chip clock docking port (5.3).
3. display module EDID reading and writing data proving installation according to claim 1 and 2, is characterized in that: the supply voltage of described MCU (1) is 3.3V.
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| CN201520003542.4U CN204480644U (en) | 2015-01-04 | 2015-01-04 | Display module EDID reading and writing data proving installation |
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| CN201520003542.4U CN204480644U (en) | 2015-01-04 | 2015-01-04 | Display module EDID reading and writing data proving installation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782131A (en) * | 2017-02-23 | 2017-05-31 | 广东轻工职业技术学院 | A kind of electronics welcome guest's board of the bulk transfer information based on bluetooth Mesh technologies |
| CN107424548A (en) * | 2017-09-25 | 2017-12-01 | 郑州云海信息技术有限公司 | The test system and method for a kind of monitor resolution |
| CN107492332A (en) * | 2017-08-10 | 2017-12-19 | 捷星显示科技（福建）有限公司 | A kind of lcd productive line test result store method |
| WO2019041396A1 (en) * | 2017-08-28 | 2019-03-07 | 惠科股份有限公司 | Method and system for protecting software data in display panel |
| 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 |
-
2015
- 2015-01-04 CN CN201520003542.4U patent/CN204480644U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782131A (en) * | 2017-02-23 | 2017-05-31 | 广东轻工职业技术学院 | A kind of electronics welcome guest's board of the bulk transfer information based on bluetooth Mesh technologies |
| CN107492332A (en) * | 2017-08-10 | 2017-12-19 | 捷星显示科技（福建）有限公司 | A kind of lcd productive line test result store method |
| WO2019041396A1 (en) * | 2017-08-28 | 2019-03-07 | 惠科股份有限公司 | Method and system for protecting software data in display panel |
| CN107424548A (en) * | 2017-09-25 | 2017-12-01 | 郑州云海信息技术有限公司 | The test system and method for a kind of monitor resolution |
| 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 |
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| C14 | Grant of patent or utility model | ||
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Address after: 430070 Hubei City, Hongshan Province, South Lake Road, No. 53, Hongshan Venture Center, building on the 4 floor, No. Patentee after: Wuhan fine test electronics group Limited by Share Ltd Address before: 430070 Hubei City, Hongshan Province, South Lake Road, No. 53, Hongshan Venture Center, building on the 4 floor, No. Patentee before: Wuhan Jingce Electronic Technology Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |