CN102122094A - Detection system for display screen of liquid crystal panel - Google Patents
Detection system for display screen of liquid crystal panel Download PDFInfo
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- CN102122094A CN102122094A CN2011100560531A CN201110056053A CN102122094A CN 102122094 A CN102122094 A CN 102122094A CN 2011100560531 A CN2011100560531 A CN 2011100560531A CN 201110056053 A CN201110056053 A CN 201110056053A CN 102122094 A CN102122094 A CN 102122094A
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- liquid crystal
- crystal panel
- display screen
- panel display
- lvds
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Abstract
The invention relates to a detection system for a display screen of a liquid crystal panel, which comprises a high-voltage strip, a button box, a process control system and a low-voltage differential signaling (LVDS) signal generating circuit, wherein the high-voltage provides voltage to illumine the display screen of the liquid crystal panel; the LVDS signal generating circuit generates LVDS signals to detect parameters of the display screen of the liquid crystal panel; different processes are selected by the button box, so that the LVDS signal generating circuit generates the LVDS signals in different modes; and the LVDS signals in different modes can detect different parameters of the display screen of the liquid crystal panel. The detection system has the advantages that: for a display and a projector which have large sizes, an optical probe for analyzing colors can perform multipoint simultaneous measurement, and after the optical probe is matched with a video signal figure generator for analyzing an image signal and a software operating interface, the measurement of all programming projects can be completed by quick one-button operation, so the detection system has high compatibility and stable performance; and the system has a small volume, is convenient to carry, and can be widely applied to the solution of video and color tests.
Description
[technical field]
The present invention relates to a kind of liquid crystal panel display screen detection system, be specifically related to a kind of detecting instrument of using described liquid crystal panel display screen detection system.
[background technology]
The quality of liquid crystal panel is simultaneously relevant with 26S Proteasome Structure and Function.As show setting up, its quality can use manual detection, and the LCD panel also has volume big simultaneously, the characteristics of transportation inconvenience, so panel gone out quality problem after on-the-spot the detection be filtered into effectively promptly settling mode.LCD panel vendor all can be too high because of the cost at shortage of manpower and service client scene, selects to give the testing agency of specialty the service of the on-the-spot quality of JIT, and this makes manufacturer pay extra-pay and time, is unfavorable for that cost reduces.So be necessary to develop a kind of detecting instrument, make manufacturer can conveniently solve the quality problem of panel.
[summary of the invention]
In order to solve the above-mentioned deficiency of prior art, the object of the invention is to provide a kind of liquid crystal panel display screen detection system.
For achieving the above object, the technical scheme that one of the present invention embodiment is provided is: a kind of liquid crystal panel display screen detecting instrument comprises a high-pressure section interface, a key box interface, a Process Control System interface and a Low Voltage Differential Signal (LVDS) output interface.Wherein, described liquid crystal panel shows that product detect instrument and are suitable for providing power supply by described high-pressure section interface to LCDs; Described key box interface is used to connect a key box; Described Process Control System interface is used to connect a program module; Described LVDS signal output interface is used to export a Low Voltage Differential Signal.
Design based on the foregoing description, the invention has the advantages that: at large-sized monitor and projector, the optic probe of analyzing color can carry out multiple spot and measure simultaneously, after the graphics video signal generator and software operation interface of image signal analyzed in collocation, single key stroke can be finished the measurement of all programming projects rapidly, compatibility is very strong, stable performance; , volume is little, easy to carry, being widely used is the video and the color test Solution of competitive superiority.
Other purpose of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.State with other purpose, feature and advantage and can become apparent on the present invention for allowing, embodiment cited below particularly also cooperates appended graphicly, is described in detail below.
[description of drawings]
Fig. 1 is the liquid crystal panel display screen detecting instrument synoptic diagram of one of the present invention embodiment.
Fig. 2 is the high-pressure section interface synoptic diagram of the liquid crystal panel display screen detecting instrument of one of the present invention embodiment.
Fig. 3 is the key box interface synoptic diagram of the liquid crystal panel display screen detecting instrument of one of the present invention embodiment.
Fig. 4 is the Process Control System interface synoptic diagram of the liquid crystal panel display screen detecting instrument of one of the present invention embodiment.
Fig. 5 is Low Voltage Differential Signal (LVDS) the output interface synoptic diagram of the liquid crystal panel display screen detecting instrument of one of the present invention embodiment.
Fig. 6 is the working method of the Low Voltage Differential Signal (LVDS) of one of the present invention embodiment
Circuit connection diagram when Fig. 7 is the detection of one of the present invention embodiment.
[embodiment]
About addressing other technology contents, characteristics and effect before the present invention, in the following detailed description that cooperates with reference to graphic embodiment, can clearly present.The direction term of being mentioned in following examples, for example: upper and lower, left and right, front or rear etc. only are the directions with reference to annexed drawings.Therefore, the direction term of use is to be used for illustrating not to be to be used for limiting the present invention.
Please refer to Fig. 1 to shown in Figure 5, a kind of liquid crystal panel display screen detecting instrument of one embodiment of the invention comprises a power switch 1, a high-pressure section interface 2, a key box interface 3, a Process Control System interface 4 and a Low Voltage Differential Signal (LVDS) output interface 5.
Please refer to Fig. 2, each pin implication of figure mesohigh bar interface is enumerated as table one:
Table one
| | Explanation | |
| 1 | |
|
| 2 | |
|
| 3 | |
|
| 4 | ON/ |
|
| 5 | |
|
| 6 | 12V |
Please refer to Fig. 3, each pin implication of key box interface is enumerated as table two among the figure:
Table two
| | Explanation | |
| 1 | |
|
| 2 | |
|
| 3 | |
|
| 4 | up | |
| 5 | down | |
| 6 | On/off |
Please refer to Fig. 4, each pin implication of Process Control System interface is enumerated as table three among the figure:
Table three
| |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Explanation | 5V | 5V | TTL-RXD | TTL-TXD | Keep | Keep | GND | GND |
Please refer to Fig. 5, each pin implication of figure mesolow differential signal (LVDS) output interface is enumerated as table four:
Table four
In the present embodiment, the working method of Low Voltage Differential Signal (LVDS) can be with reference to Fig. 6.LVDS is the very differential wave communication modes of end voltage action of a kind of use, and amplitude approximately has only about 350mv usually, generally is used in PCB to the communication between the PCB.This LVDS has 6bit respectively, and 8bit, 10bit, 6bit are 3 groups of data, 1 group of clock; 8bit is 4 groups of data, 1 group of clock; 10bit is 5 groups of data, 1 group of clock.Detecting instrument mainly provides the LVDS signal, can test various now 6/8 Panel (Notebook, Monitor, TV), and consider its practicality, provides 16 groups of clocks, 64 kinds of patterns.LVDS flat-panel monitor link standard shows that LVDS has low noise characteristic, is best suited for the LCD of notebook and palmtop computer.The flat-panel monitor link is sent to flat-panel monitor with a large amount of video datas from notebook.System design engineer just must solve the problem of electromagnetic interference (EMI) as if utilizing twisted-pair feeder or flexible circuit that high-speed information is imported within the flat-panel monitor link.Because the anti-electromagnetic interference capability of LVDS technology is more more superior than other interfacing, therefore become slip-stick artist's preferred option.
In the present embodiment, can be when using liquid crystal panel display screen detecting instrument detection liquid crystal panel display screen with reference to Fig. 7 connecting circuit, in conjunction with Fig. 1, opening the Switching Power Supply of detecting instrument powers to total system, wherein, high-pressure section can be the liquid crystal panel display screen and lights required high voltage and make liquid crystal panel display screen energising; When detecting screen, need the manual image switching that goes to judge which is a defective products, picture switches the main key box that connects by the interface of detecting instrument key box to be controlled, can be by key box from sending one first control signal, described first control signal is sent to the Process Control System that is connected in the Process Control System interface, after Process Control System receives first control signal, respond first control signal and produce one second control signal, second control signal makes the liquid crystal panel display screen change face and makes Low Voltage Differential Signal (LVDS) produce the Low Voltage Differential Signal (LVDS) that circuit produces AD HOC simultaneously, and the Low Voltage Differential Signal of different mode (LVDS) detects the different parameter of liquid crystal panel display screen.
Though the present invention discloses as above with preferred embodiment; right its be not to be used for limiting the present invention, anyly have the knack of this skill person, without departing from the spirit and scope of the invention; when can doing a little change, so the present invention's protection domain is as the criterion when looking the patent protection scope person of defining.In addition, arbitrary embodiment of the present invention or claim must not reached whole purposes or advantage or the characteristics that the present invention discloses.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not the rights protection scope that is used for limiting the present invention.
Claims (7)
1. a liquid crystal panel display screen detection system is used for the detection of the LCD liquid crystal panel display screen of multiple size, and described liquid crystal panel display screen detection system comprises:
One high-pressure section, described high-pressure section provides power supply to LCDs when detecting;
One key box, described key box are used to export one first control signal;
One Process Control System, described Process Control System are used to accept described first control signal and produce one second control signal; And
One Low Voltage Differential Signal (LVDS) produces circuit, and described LVDS signal generating circuit is used to produce a Low Voltage Differential Signal.
2. liquid crystal panel display screen detection system as claimed in claim 1, wherein, described Process Control System comprises the contents of program that detects a plurality of parameters of liquid crystal panel display screen.
3. liquid crystal panel display screen detection system as claimed in claim 2, wherein, a plurality of parameters of described detection liquid crystal panel display screen are bright spot, bad point, brightness, colourity, resolution.
4. liquid crystal panel display screen detection system as claimed in claim 1, wherein, described Low Voltage Differential Signal comprises 6bit Low Voltage Differential Signal, 8bit Low Voltage Differential Signal and 10bit Low Voltage Differential Signal.
5. liquid crystal panel display screen detection system as claimed in claim 1, wherein, described second control signal is used to control described Low Voltage Differential Signal (LVDS) generation circuit and produces described Low Voltage Differential Signal.
6. liquid crystal panel display screen detecting instrument, described liquid crystal panel display screen detecting instrument adopts a kind of liquid crystal panel display screen detection system, and is applicable to the LCD liquid crystal panel display screen that detects multiple size.
7. liquid crystal panel as claimed in claim 6 shows that product detect instrument, and it comprises:
One high-pressure section interface, described liquid crystal panel show that product detect instrument and are suitable for providing power supply by described high-pressure section interface to LCDs;
One key box interface, described key box interface is used to connect a key box;
One Process Control System interface, described Process Control System interface is used to connect a program module; And
One Low Voltage Differential Signal (LVDS) output interface, described LVDS signal output interface is used to export a Low Voltage Differential Signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100560531A CN102122094A (en) | 2011-03-09 | 2011-03-09 | Detection system for display screen of liquid crystal panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100560531A CN102122094A (en) | 2011-03-09 | 2011-03-09 | Detection system for display screen of liquid crystal panel |
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| CN102122094A true CN102122094A (en) | 2011-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100560531A Pending CN102122094A (en) | 2011-03-09 | 2011-03-09 | Detection system for display screen of liquid crystal panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376577A (en) * | 2013-07-03 | 2013-10-30 | 杨玉峰 | Automatic test method and system for liquid crystal display panel with LVDS (low voltage differential signaling) interface |
| CN105629909A (en) * | 2014-10-31 | 2016-06-01 | 群创光电股份有限公司 | Automatic detection method |
| CN112904128A (en) * | 2021-01-26 | 2021-06-04 | 北京京东方显示技术有限公司 | Electromagnetic interference test method and system |
-
2011
- 2011-03-09 CN CN2011100560531A patent/CN102122094A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376577A (en) * | 2013-07-03 | 2013-10-30 | 杨玉峰 | Automatic test method and system for liquid crystal display panel with LVDS (low voltage differential signaling) interface |
| CN105629909A (en) * | 2014-10-31 | 2016-06-01 | 群创光电股份有限公司 | Automatic detection method |
| CN105629909B (en) * | 2014-10-31 | 2018-03-30 | 群创光电股份有限公司 | Automated detection method |
| CN112904128A (en) * | 2021-01-26 | 2021-06-04 | 北京京东方显示技术有限公司 | Electromagnetic interference test method and system |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110713 |