CN104698612A - LCM detection method - Google Patents
LCM detection method Download PDFInfo
- Publication number
- CN104698612A CN104698612A CN201310660433.5A CN201310660433A CN104698612A CN 104698612 A CN104698612 A CN 104698612A CN 201310660433 A CN201310660433 A CN 201310660433A CN 104698612 A CN104698612 A CN 104698612A
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- China
- Prior art keywords
- control
- lcm
- signal
- detection
- data
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- 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
Abstract
The invention discloses an LCM detection method which comprises the following steps: controlling access switching of testing signals so as to detect the color lumps and the color display clarity of LCM substrates corresponding to different testing signals one by one; connecting a control system with a host computer through a parallel PCI bus, thereby achieving communication of control programs and control signals; controlling and debugging LCM detection unit testing programs and testing algorithms, and displaying the process of PC error correction of detection data; storing the detection data in real time, comparing the detection data with qualified databases of different detection data, if error data are found, controlling a switching module to display error correction monitoring, and displaying error data on a monitoring display screen in real time. The LCM detection method is high in detection accuracy and detection efficiency, real-time adjustment and replacement of detection programs can be achieved, and error data can be subjected to detection error correction treatment in real time.
Description
Technical field
The present invention relates to liquid crystal display and detection technique field, relate to a kind of novel LCM detection method specifically.
Background technology
LCM is that a kind of LCD of excellent performance shows module or perhaps Liquid Crystal Module, and it is by liquid crystal display device, web member, controls to wait peripheral circuit, PCB, backlight, the assembly that structural member etc. are assembled together with driving.
LCM provides the LCD display driver interface of standard for user, and user carries out operation according to interface requirement and correctly shows to control LCD.LCM is a kind of LCD product of high integration, and to small size LCD display, LCM can be connected with various microcontroller more easily; Show the LCD of large scale or colour, generally can take the quite most resource of control system or cannot realize controlling at all, process data volume is huge.LCM product can effectively solve the problem.
LCD MODULE performance test in early stage is the important component part of the detection of liquid crystal display product, and the performance parameters such as its display color lump, clear color degree and signal switching are main detected parameters.
Summary of the invention
In view of the defect that prior art exists, the object of the invention is to provide a kind of novel LCM detection method.
To achieve these goals, technical scheme of the present invention:
A kind of LCM detection method, is characterized in that: comprise
The access of test signal is switched and controls: arrange at the access interface of detecting unit and be connected with signal access port, for carrying out the signal frequency-dividing circuit of frequency division test to the test signal of access and be connected with signal access port, for realizing the signal shifter of the test signal hand-off process of multiple access, utilize classification driver element to carry out frequency division step control to signal frequency-dividing circuit, realize the color lump of LCM substrate corresponding to each test signal, the testing process one by one of color displays sharpness;
The communication of control program and control signal: by parallel pci bus connection control system and host computer, realize the communication of control program and control signal;
Carry out controlling debugging to LCM detecting unit test procedure and testing algorithm: realize the debugging of the control program that the access of test signal switches and the exchange to the corresponding test procedure of LCM detecting unit and testing algorithm by DSP control system, to adapt to the testing requirement to Different L CM substrate, analog to digital conversion circuit is utilized to realize the conversion of DSP control system to the control information of driver element, some CAN interfaces are set, for receiving the real-time control of host computer to the control command of DSP module and respective algorithms;
Detect the PC error correction procedure for displaying of data: real-time storage is carried out to detection data, and the qualified database that above-mentioned detection data and each detect data is compared, find misdata, control handover module and carry out error correction monitoring display, misdata is presented on monitoring display screen in real time.
Described real-time display is by arranging the commutation circuit being used for switching display misdata in real time, and commutation circuit is carried out switching by Drive and Control Circuit and controlled.
Compared with prior art, beneficial effect of the present invention: the monitoring display module be connected with data processing module, and be connected with data processing module, for
Accuracy in detection of the present invention is high, detection efficiency fast, and the real-time adjustment that can realize trace routine is changed, and carries out detection correction process to misdata in real time.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, the present invention is further elaborated.
A kind of LCM detection method, is characterized in that: comprise
The access of test signal is switched and controls: arrange at the access interface of detecting unit and be connected with signal access port, for carrying out the signal frequency-dividing circuit of frequency division test to the test signal of access and be connected with signal access port, for realizing the signal shifter of the test signal hand-off process of multiple access, utilize classification driver element to carry out frequency division step control to signal frequency-dividing circuit, realize the color lump of LCM substrate corresponding to each test signal, the testing process one by one of color displays sharpness;
The communication of control program and control signal: by parallel pci bus connection control system and host computer, realize the communication of control program and control signal;
Carry out controlling debugging to LCM detecting unit test procedure and testing algorithm: realize the debugging of the control program that the access of test signal switches and the exchange to the corresponding test procedure of LCM detecting unit and testing algorithm by DSP control system, to adapt to the testing requirement to Different L CM substrate, analog to digital conversion circuit is utilized to realize the conversion of DSP control system to the control information of driver element, some CAN interfaces are set, for receiving the real-time control of host computer to the control command of DSP module and respective algorithms;
Detect the PC error correction procedure for displaying of data: real-time storage is carried out to detection data, and the qualified database that above-mentioned detection data and each detect data is compared, find misdata, control handover module and carry out error correction monitoring display, misdata is presented on monitoring display screen in real time.
Described real-time display is by arranging the commutation circuit being used for switching display misdata in real time, and commutation circuit is carried out switching by Drive and Control Circuit and controlled.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (2)
1. a LCM detection method, is characterized in that: comprise
The access of test signal is switched and controls: arrange at the access interface of detecting unit and be connected with signal access port, for carrying out the signal frequency-dividing circuit of frequency division test to the test signal of access and be connected with signal access port, for realizing the signal shifter of the test signal hand-off process of multiple access, utilize classification driver element to carry out frequency division step control to signal frequency-dividing circuit, realize the color lump of LCM substrate corresponding to each test signal, the testing process one by one of color displays sharpness;
The communication of control program and control signal: by parallel pci bus connection control system and host computer, realize the communication of control program and control signal;
Carry out controlling debugging to LCM detecting unit test procedure and testing algorithm: realize the debugging of the control program that the access of test signal switches and the exchange to the corresponding test procedure of LCM detecting unit and testing algorithm by DSP control system, to adapt to the testing requirement to Different L CM substrate, analog to digital conversion circuit is utilized to realize the conversion of DSP control system to the control information of driver element, some CAN interfaces are set, for receiving the real-time control of host computer to the control command of DSP module and respective algorithms;
Detect the PC error correction procedure for displaying of data: real-time storage is carried out to detection data, and the qualified database that above-mentioned detection data and each detect data is compared, find misdata, control handover module and carry out error correction monitoring display, misdata is presented on monitoring display screen in real time.
2. a kind of LCM detection method according to claim 1, is characterized in that: described real-time display is by arranging the commutation circuit being used for switching display misdata in real time, and commutation circuit is carried out switching by Drive and Control Circuit and controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310660433.5A CN104698612A (en) | 2013-12-09 | 2013-12-09 | LCM detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310660433.5A CN104698612A (en) | 2013-12-09 | 2013-12-09 | LCM detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104698612A true CN104698612A (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310660433.5A Pending CN104698612A (en) | 2013-12-09 | 2013-12-09 | LCM detection method |
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| Country | Link |
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| CN (1) | CN104698612A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817217A (en) * | 2017-10-31 | 2018-03-20 | 武汉精测电子集团股份有限公司 | A kind of image suitable for LCM automatic optics inspections accelerates processing system |
| CN108873411A (en) * | 2018-07-10 | 2018-11-23 | 中航华东光电有限公司 | Promote the test macro of LCD MODULE test efficiency |
-
2013
- 2013-12-09 CN CN201310660433.5A patent/CN104698612A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817217A (en) * | 2017-10-31 | 2018-03-20 | 武汉精测电子集团股份有限公司 | A kind of image suitable for LCM automatic optics inspections accelerates processing system |
| CN107817217B (en) * | 2017-10-31 | 2020-06-02 | 武汉精测电子集团股份有限公司 | Image acceleration processing system suitable for LCM automatic optical detection |
| US11073484B2 (en) | 2017-10-31 | 2021-07-27 | Wuhan Jingce Electronic Group Co., Ltd. | Image acceleration processing device for automatic optical inspection of LCD module |
| CN108873411A (en) * | 2018-07-10 | 2018-11-23 | 中航华东光电有限公司 | Promote the test macro of LCD MODULE test efficiency |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20150610 |