CN107799042A - A kind of liquid crystal display die set test board - Google Patents
A kind of liquid crystal display die set test board Download PDFInfo
- Publication number
- CN107799042A CN107799042A CN201711066419.7A CN201711066419A CN107799042A CN 107799042 A CN107799042 A CN 107799042A CN 201711066419 A CN201711066419 A CN 201711066419A CN 107799042 A CN107799042 A CN 107799042A
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- circuit
- liquid crystal
- crystal display
- die set
- test board
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention discloses a kind of liquid crystal display die set test board, including：MCU, human-computer exchange circuit, voltage offset electric circuit, the first auxiliary circuit, the second auxiliary circuit, video display control circuit and fixture, MCU is connected with human-computer exchange circuit, voltage offset electric circuit, the first auxiliary circuit, fixture, video display control circuit, voltage offset electric circuit is also connected with the first auxiliary circuit and fixture, first auxiliary circuit is also connected with fixture, and video display control circuit is also connected with fixture and the second auxiliary circuit.The present invention provides a kind of liquid crystal display die set test board, and available for liquid crystal display die set of the test with distinct interface, a kind of situation of interface can only be tested by changing the single test board of tradition, and flexibility is strong, reduces the production quantity of test board, cost-effective.During test, staff is only needed liquid crystal display die set to be measured being placed on specific position on test board, and pressing switch key can be tested, and operation is very easy.
Description
Technical field
The present invention relates to liquid crystal display die set field, more particularly to a kind of liquid crystal display die set test board.
Background technology
With the development of science and technology, electronic product is applied in daily life more and more widely, such as hand is mechanical, electrical
Brain, flat board etc..Wherein, important component of the liquid crystal display die set as electronic product, the quality of its performance is largely
Ground determine the electronic product quality and user experience sense, therefore, liquid crystal display die set dispatch from the factory it is previous as to pass through
Substantial amounts of test, the content of test include screen whether can normally rotate, the attribute such as screen luminance is secretly tested, Gamma values
Test etc., its test passes and effect it is fine after could release market.Liquid crystal display die set is tested generally by test board
Come what is tested, the interface in liquid crystal display die set has MCU interfaces, LVDS interface, rgb interface etc., different liquid crystal displays
There is different interfaces above module, different interfaces needs different test boards to drive, very troublesome, and cost of idleness.
Therefore, the prior art is defective, it is necessary to improve.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, there is provided a kind of liquid crystal display die set test board, be can adapt to
Multiple interfaces in liquid crystal display die set.
Technical scheme is as follows：A kind of liquid crystal display die set test board is provided, including：MCU, human-computer exchange electricity
Road, voltage offset electric circuit, the first auxiliary circuit, the second auxiliary circuit, video display control circuit and fixture, the fixture are used
In placement liquid crystal display die set to be measured.The MCU and human-computer exchange circuit, voltage offset electric circuit, the first auxiliary circuit, fixture,
Video display control circuit is connected, and the voltage offset electric circuit is also connected with the first auxiliary circuit and fixture, and described first is auxiliary
Circuit is helped also to be connected with fixture, the video display control circuit is also connected with fixture and the second auxiliary circuit.
Further, first auxiliary circuit includes：First programming circuitry, DC-DC change-over circuits, Gamma correction electricity
Road, the first storage circuit, functional pin detection circuit and backlight control circuit, first storage circuit are used to store MCU
In program.Due to not having Gamma correcting circuits inside the liquid crystal display die set that has, therefore this test board provides Gamma circuits.Institute
State backlight control circuit be used for be used for control backlight in liquid crystal display die set to be measured and test board.
Further, the pin function detection circuit includes：Up and down rotation detection module, left rotation and right rotation detection module,
CABC (Content Adaptive Brightness Control) detection modules and ID (identification) detection moulds
Block, whether the spinfunction up and down that the detection module of rotation up and down is used to detect screen is normal, upwards lower rotation detection module
Input high level, then liquid crystal display die set to be measured be arranged to forward scan, if it is shown that character image, then personage's head court
Down, correspondingly, lower upwards to rotate detection module input low level, then liquid crystal display die set to be measured is arranged to reversely sweep upper pin
Retouch, if it is shown that character image, then pin upward, screen is detected by forward scan and reverse scan to personage upside down
Whether upper and lower spinfunction is normal.Whether the left rotation and right rotation function that the left rotation and right rotation detection module is used to detect screen is normal,
The CABA detection modules display whether normally that is, can liquid crystal display die set according to the content of display for detecting backlight module
The brightness of backlight is automatically adjusted, whether just the ID detection modules are used for the ID number for reading liquid crystal display die set, judge the ID number
Really.
Further, second auxiliary circuit includes：Second programming circuitry, the second storage circuit, USB interface circuit with
And composite video interface circuit, second storage circuit are used for the program for storing video display control circuit.
Further, the voltage offset electric circuit includes manual voltage bias circuit and automatic voltage bias circuit, can
Manual voltage bias circuit or automatic voltage bias circuit are selected according to self-demand.
Further, the human-computer exchange circuit includes：Keyboard control circuit, display interface circuit and audible alarm electricity
Road.
Using such scheme, the present invention provides a kind of liquid crystal display die set test board, has distinct interface available for test
Liquid crystal display die set, a kind of situation of interface can only be tested by changing the single test board of tradition, and flexibility is strong, reduces test board
Production quantity, it is cost-effective.During test, staff only needs the fixture being placed on liquid crystal display die set to be measured on test board
On, pressing switch key can be tested, and operation is very easy.
Brief description of the drawings
Fig. 1 is the module diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Referring to Fig. 1, the present invention provides a kind of liquid crystal display die set test board, including：MCU, human-computer exchange circuit, voltage
Biasing circuit, the first auxiliary circuit, the second auxiliary circuit, video display control circuit and fixture, the fixture are used to place
Liquid crystal display die set to be measured.The MCU shows with human-computer exchange circuit, voltage offset electric circuit, the first auxiliary circuit, fixture, video
Show that control circuit connects, the voltage offset electric circuit is also connected with the first auxiliary circuit and fixture, the voltage offset electric circuit
Including manual voltage bias circuit and automatic voltage bias circuit, can be selected according to self-demand manual voltage bias circuit or
It is automatic voltage bias circuit.First auxiliary circuit is also connected with fixture, the video display control circuit also with fixture
And second auxiliary circuit connection.
First auxiliary circuit includes：First programming circuitry, DC-DC change-over circuits, Gamma correcting circuits, first are deposited
Storing up electricity road, functional pin detection circuit and backlight control circuit, first storage circuit are used to store the program in MCU,
Due to not having Gamma correcting circuits inside the liquid crystal display die set that has, therefore this test board provides Gamma circuits.The backlight control
Circuit processed is used to be used for controlling the backlight in liquid crystal display die set to be measured and test board.The functional pin detects circuit bag
Include：Rotation detection module, left rotation and right rotation detection module, CABC detection modules and ID detection modules up and down, it is described to rotate up and down
Whether the spinfunction up and down that detection module is used to detect screen is normal, and lower rotation detection module input high level, then treat upwards
Survey liquid crystal display die set and be arranged to forward scan, if it is shown that character image, then personage head-up pin down, accordingly
Ground, lower upwards to rotate detection module input low level, then liquid crystal display die set to be measured is arranged to reverse scan, if display
It is character image, then pin upward, the spinfunction up and down of screen is detected by forward scan and reverse scan to personage upside down
It is whether normal.Whether the left rotation and right rotation function that the left rotation and right rotation detection module is used to detect screen is normal, the CABA detections
Module displays whether normally that is, can liquid crystal display die set automatically adjust backlight according to the content of display for detecting backlight module
Brightness, the ID detection modules are used to read the ID number of liquid crystal display die set, judge whether the ID number correct.
Second auxiliary circuit includes：Second programming circuitry, the second storage circuit, USB interface circuit and compound regard
Frequency interface circuit, second storage circuit are used for the program for storing video display control circuit.
The human-computer exchange circuit includes：Keyboard control circuit, display interface circuit and audible alarm circuit.
Operation principle of the present invention is as follows：First by the first programming circuitry and the second programming circuitry by corresponding code with
Picture is burned onto in corresponding Flash, will using the keyboard control circuit in human-computer exchange circuit and the selection of display interface circuit
The interface of the liquid crystal display die set of test and the functional pin to be tested.
If the interface of the liquid crystal display die set of selection is LVDS interface, biased electrical is set first with voltage offset electric circuit
Pressure, can select manual voltage bias circuit or automatic voltage bias circuit according to self-demand, and voltage offset electric circuit is wait
Survey liquid crystal module and voltage is provided.After being provided with, liquid crystal display die set to be measured is inserted in the fixture on test board, clicked on corresponding
Button voltage offset electric circuit start give LCD module under test output corresponding voltage, video display control circuit start export LVDS
Signal enters test pattern, in test process, if the functional pin of test has exception, can carry out sound and light alarm.Test
Cheng Hou, click keys, cut off the electricity supply and signal, test terminate.
If the interface of the liquid crystal display die set of selection is MCU interfaces, data bit (8/9/ corresponding to MCU interfaces is first set
16/18bit), reselection required voltage.After being provided with, liquid crystal display die set to be measured is inserted on the fixture on test board,
Corresponding button is clicked on, DC-DC change-over circuits start to export corresponding voltage to liquid crystal display die set to be measured, and MCU starts to export MCU
Signal enters test pattern, in test process, if the functional pin of test has exception, can carry out sound and light alarm.Test
Cheng Hou, click keys, cut off the electricity supply and signal, test terminate.
In addition, this liquid crystal display die set test board can also expand to the display function similar to PC, only need to be by main frame
The USB interface circuit or composite video interface circuit reserved on connecting test plate.
In summary, the present invention provides a kind of liquid crystal display die set test board, available for liquid of the test with distinct interface
Brilliant display module, a kind of situation of interface can only be tested by changing the single test board of tradition, and flexibility is strong, reduces the life of test board
Quantity is produced, it is cost-effective.During test, staff only needs liquid crystal display die set to be measured being placed on specific position on test board
Put, pressing switch key can be tested, and operation is very easy.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should be included in the scope of the protection.
Claims (6)
- A kind of 1. liquid crystal display die set test board, it is characterised in that including：MCU, human-computer exchange circuit, voltage offset electric circuit, One auxiliary circuit, the second auxiliary circuit, video display control circuit and fixture, the MCU and human-computer exchange circuit, voltage are inclined Circuits, the first auxiliary circuit, fixture, the connection of video display control circuit, the voltage offset electric circuit are also electric with the first auxiliary Road and fixture connection, first auxiliary circuit is also connected with fixture, the video display control circuit also with fixture and Second auxiliary circuit connects.
- 2. liquid crystal display die set test board according to claim 1, it is characterised in that first auxiliary circuit includes： First programming circuitry, DC-DC change-over circuits, Gamma correcting circuits, the first storage circuit, functional pin detection circuit and the back of the body Light control circuit.
- 3. liquid crystal display die set test board according to claim 2, it is characterised in that the functional pin detects circuit bag Include：Rotation detection module, left rotation and right rotation detection detection module, CABC detection modules and ID detection modules up and down.
- 4. liquid crystal display die set test board according to claim 1, it is characterised in that second auxiliary circuit includes： Second programming circuitry, the second storage circuit, USB interface circuit and composite video interface circuit.
- 5. liquid crystal display die set test board according to claim 1, it is characterised in that the voltage offset electric circuit includes hand Dynamic voltage bias circuit and automatic voltage bias circuit.
- 6. liquid crystal display die set test board according to claim 1, it is characterised in that the human-computer exchange circuit includes： Keyboard control circuit, display interface circuit and audible alarm circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711066419.7A CN107799042B (en) | 2017-11-02 | 2017-11-02 | Liquid crystal display module test board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711066419.7A CN107799042B (en) | 2017-11-02 | 2017-11-02 | Liquid crystal display module test board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107799042A true CN107799042A (en) | 2018-03-13 |
| CN107799042B CN107799042B (en) | 2021-04-06 |
Family
ID=61548763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711066419.7A Active CN107799042B (en) | 2017-11-02 | 2017-11-02 | Liquid crystal display module test board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107799042B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN114490477A (en) * | 2022-01-28 | 2022-05-13 | 重庆惠科金扬科技有限公司 | Interface switching circuit, method, liquid crystal display screen and storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100136148A (en) * | 2009-06-18 | 2010-12-28 | 주식회사 디지트론 | Test system and method for testing display module |
| CN103105684A (en) * | 2013-01-22 | 2013-05-15 | 北京京东方光电科技有限公司 | Test method, device, system and test equipment of liquid crystal display module |
| CN203616547U (en) * | 2013-12-19 | 2014-05-28 | Tcl显示科技（惠州）有限公司 | Test system of liquid crystal display module |
| CN104698607A (en) * | 2013-12-06 | 2015-06-10 | 大连龙宁科技有限公司 | LCM test system with function of voice prompt |
| CN204904796U (en) * | 2015-07-22 | 2015-12-23 | 深圳市亮晶晶电子有限公司 | Multifunctional LCM test board |
| 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 |
| CN106710494A (en) * | 2016-12-23 | 2017-05-24 | 武汉精立电子技术有限公司 | Display module detection system and detection method |
| CN107240370A (en) * | 2017-08-02 | 2017-10-10 | 长沙市宇顺显示技术有限公司 | A kind of display screen test device and method of testing |
-
2017
- 2017-11-02 CN CN201711066419.7A patent/CN107799042B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100136148A (en) * | 2009-06-18 | 2010-12-28 | 주식회사 디지트론 | Test system and method for testing display module |
| CN103105684A (en) * | 2013-01-22 | 2013-05-15 | 北京京东方光电科技有限公司 | Test method, device, system and test equipment of liquid crystal display module |
| CN104698607A (en) * | 2013-12-06 | 2015-06-10 | 大连龙宁科技有限公司 | LCM test system with function of voice prompt |
| CN203616547U (en) * | 2013-12-19 | 2014-05-28 | Tcl显示科技（惠州）有限公司 | Test system of liquid crystal display module |
| CN204904796U (en) * | 2015-07-22 | 2015-12-23 | 深圳市亮晶晶电子有限公司 | Multifunctional LCM test board |
| CN106710494A (en) * | 2016-12-23 | 2017-05-24 | 武汉精立电子技术有限公司 | Display module detection system and detection method |
| 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 |
| CN107240370A (en) * | 2017-08-02 | 2017-10-10 | 长沙市宇顺显示技术有限公司 | A kind of display screen test device and method of testing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN110412782B (en) * | 2019-08-02 | 2023-08-04 | 湖南海诚宇信信息技术有限公司 | Liquid crystal display device testing system and testing method |
| CN114490477A (en) * | 2022-01-28 | 2022-05-13 | 重庆惠科金扬科技有限公司 | Interface switching circuit, method, liquid crystal display screen and storage medium |
| CN114490477B (en) * | 2022-01-28 | 2024-05-14 | 重庆惠科金扬科技有限公司 | Interface switching circuit, method, liquid crystal display screen and storage medium |
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| Publication number | Publication date |
|---|---|
| CN107799042B (en) | 2021-04-06 |
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