CN2837878Y - LCD panel detector - Google Patents
LCD panel detector Download PDFInfo
- Publication number
- CN2837878Y CN2837878Y CN 200520036302 CN200520036302U CN2837878Y CN 2837878 Y CN2837878 Y CN 2837878Y CN 200520036302 CN200520036302 CN 200520036302 CN 200520036302 U CN200520036302 U CN 200520036302U CN 2837878 Y CN2837878 Y CN 2837878Y
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- China
- Prior art keywords
- controller
- luminance
- collector
- driving voltage
- voltage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Liquid Crystal Display Device Control (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Liquid Crystal (AREA)
Abstract
The utility model discloses an LCD panel detector, which comprises a luminance collector, a controller and a voltage generator, wherein the luminance collector comprises an input end for collecting the luminance of an LCD panel, and the signal output end of the luminance collector is connected with the input end of the controller; the control signal output end of the controller is connected with the input end of the voltage generator which comprises a signal output end for generating the driving voltage of the LCD panel. The luminance collector is used for feeding back luminance corresponding to the driving voltage, and the controller can draw out a voltage-luminance curve. Thus, the optimal driving voltage of panels with different model numbers is obtained and detection personnel can observe whether the panels have disadvantages under the optimal show effect. The driving voltage can be measured at real time. By the control of the driving voltage, energy for detecting defective products is enhanced and the detection efficiency is raised.
Description
Technical field
The utility model relates to a kind of panel of LCD pick-up unit.
Background technology
LCD (Liquid Crystal Display, LCD), low in energy consumption because it has the brightness height, advantages such as portability, occupy more and more important position in various moving electronic components, its output also sharply expands, associated various technology fast developments.Its developing direction is also towards colorize, wide visual angle, and high brightness, high-contrast, the low-power consumption develop rapidly, various correlation techniques are maked rapid progress.
Each LCD production firm all is devoted to improve technology and produces yield to improve, thereby obtains maximum profit.In LCD manufacturing process, defectives such as point defect, contrast, weak point open circuit, box thickness ununiformity are outwardness, and find above defective in the stage and semi-finished product of manufacturing, and then can reduce raw material and production cost.
The common practice of industry is to adopt manual sorting's mode at present, and the testing staff sets the theoretical value of driving voltage, lights panel (PANEL) with the theoretical value of this driving voltage, observes with human eye again, judges whether defectiveness.But driving voltage is set up on their own by the testing staff, and it is subjected to the change of human factor bigger, and can't quantitative measurment, and efficient is lower.
Summary of the invention
The purpose of this utility model is exactly in order to overcome the above problems, and a kind of panel of LCD pick-up unit is provided.
The utility model realizes that the above-mentioned purpose scheme is: a kind of panel of LCD pick-up unit, comprise brightness collector, controller and voltage generator, the brightness collector comprises the input end that is used to gather panel of LCD brightness, the signal output part of brightness collector links to each other with the input end of controller, the control signal output ends of controller links to each other with the input end of voltage generator, and voltage generator comprises the signal output part that is used to produce the panel of LCD driving voltage.
Described brightness collector is for adopting nitometer.
Adopt the beneficial effect of above scheme:
Adopt the brightness of brightness collector feedback driving voltage correspondence, controller can be drawn voltage-brightness curve, thereby obtain the optimal drive voltage of different model PANEL, make the testing staff under optimal display result, observe whether defectiveness of PANEL, driving voltage can be surveyed in real time, by control to driving voltage, strengthened the ability that detects of defective products, increased substantially the efficient that detects.
Description of drawings
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
Fig. 1 is the structural representation of the utility model principle.
Fig. 2 is a schematic flow sheet of the present utility model.
Embodiment
Embodiment, a kind of panel of LCD pick-up unit, as shown in Figure 1, comprise brightness collector 1, controller 2 and voltage generator 3, brightness collector 1 comprises the input end of the luminance signal that can gather PANEL4, the signal output part of brightness collector 1 links to each other with the input end of controller 2, and the control signal output ends of controller 2 links to each other with the input end of voltage generator 3, and voltage generator 3 comprises the signal output part that is used to produce the PANEL driving voltage.
In the present embodiment, brightness collector 1 adopts nitometer.
The size and the frequency adjustable of the driving voltage of voltage generator 3 outputs.
Anchor clamps can also be set, the input end of anchor clamps links to each other with the signal output part of voltage generator 3, anchor clamps comprise the access part that is connected with the electrode of PANEL to be detected, the distance that inserts between the part can be according to the width adjusting of different size PANEL electrode to be detected, thereby can satisfy the detection of multiple size PANEL.
The course of work, as shown in Figure 2:
1, controller 2 transmits control signal to voltage generator 3;
2, after voltage generator 3 receives control signal, outputting drive voltage;
3, PANEL4 is lighted under the driving of driving voltage;
4, brightness collector 1 is gathered the brightness of PANEL4, and exports corresponding electric signal and give controller 2;
5, repeating step 1 to 4, and voltage generator 3 produces continuous driving voltage and drives PANEL4, and brightness collector 1 is given controller 2 with the brightness feedback of respective drive voltage correspondence;
6, controller 2 is analyzed and is obtained voltage-brightness curve according to detected result;
7, controller 2 is determined the optimal drive voltage of this PANEL according to voltage-brightness curve, and provide control signal corresponding to voltage generator 3, in the present embodiment, if the driving voltage of correspondence was V when PANEL4 was lighted fully, choose the mid point of 10%V and 90%V on voltage-brightness curve, promptly 50%V is as optimal drive voltage;
8, voltage generator 3 these optimal drive voltage of output are lighted PANEL4, realize optimal display result;
9, the testing staff is at this optimal drive voltage whether defectiveness of this PANEL4 that judges.
Claims (2)
1, a kind of panel of LCD pick-up unit, it is characterized in that: comprise brightness collector (1), controller (2) and voltage generator (3), brightness collector (1) comprises the input end that is used to gather panel of LCD brightness, the signal output part of brightness collector (1) links to each other with the input end of controller (2), the control signal output ends of controller (2) links to each other with the input end of voltage generator (3), and voltage generator (3) comprises the signal output part that is used to produce the panel of LCD driving voltage.
2, panel of LCD pick-up unit according to claim 1 is characterized in that: described brightness collector (1) is for adopting nitometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520036302 CN2837878Y (en) | 2005-11-21 | 2005-11-21 | LCD panel detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520036302 CN2837878Y (en) | 2005-11-21 | 2005-11-21 | LCD panel detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2837878Y true CN2837878Y (en) | 2006-11-15 |
Family
ID=37392366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520036302 Expired - Lifetime CN2837878Y (en) | 2005-11-21 | 2005-11-21 | LCD panel detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2837878Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470292B (en) * | 2007-12-25 | 2010-11-17 | 比亚迪股份有限公司 | Control method for bad voltage of LCD |
| CN101813835B (en) * | 2009-02-20 | 2012-05-30 | 北京京东方光电科技有限公司 | Liquid crystal panel detection device and liquid crystal panel detection method |
| CN107103867A (en) * | 2017-04-19 | 2017-08-29 | 西安诺瓦电子科技有限公司 | Display control card detection method and device, detecting system and production line |
| CN108053785A (en) * | 2017-12-29 | 2018-05-18 | 武汉华星光电半导体显示技术有限公司 | The detection module and detection device of OLED display panel |
| CN113281942A (en) * | 2021-04-20 | 2021-08-20 | 信利（惠州）智能显示有限公司 | Method for improving detection rate of point defects caused by TN (twisted nematic) model Island residues |
-
2005
- 2005-11-21 CN CN 200520036302 patent/CN2837878Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470292B (en) * | 2007-12-25 | 2010-11-17 | 比亚迪股份有限公司 | Control method for bad voltage of LCD |
| CN101813835B (en) * | 2009-02-20 | 2012-05-30 | 北京京东方光电科技有限公司 | Liquid crystal panel detection device and liquid crystal panel detection method |
| CN107103867A (en) * | 2017-04-19 | 2017-08-29 | 西安诺瓦电子科技有限公司 | Display control card detection method and device, detecting system and production line |
| CN108053785A (en) * | 2017-12-29 | 2018-05-18 | 武汉华星光电半导体显示技术有限公司 | The detection module and detection device of OLED display panel |
| CN113281942A (en) * | 2021-04-20 | 2021-08-20 | 信利（惠州）智能显示有限公司 | Method for improving detection rate of point defects caused by TN (twisted nematic) model Island residues |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061115 |
|
| EXPY | Termination of patent right or utility model |