CN202522805U - Vision system for TFT-LCD (Thin Film Transistor-Liquid Crystal Display) detection - Google Patents
Vision system for TFT-LCD (Thin Film Transistor-Liquid Crystal Display) detection Download PDFInfo
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- CN202522805U CN202522805U CN2012200916349U CN201220091634U CN202522805U CN 202522805 U CN202522805 U CN 202522805U CN 2012200916349 U CN2012200916349 U CN 2012200916349U CN 201220091634 U CN201220091634 U CN 201220091634U CN 202522805 U CN202522805 U CN 202522805U
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Abstract
The utility model discloses a vision system for TFT-LCD (Thin Film Transistor-Liquid Crystal Display) detection, which is characterized by comprising a TFT-LCD location mechanism used for fixing a TFT-LCD to be detected in an image acquiring region, an image acquiring unit used for acquiring an image of the TFT-LCD to be detected, a characteristic extracting unit used for extracting local characteristics of an image of a key part of the TFT-LCD, and an analyzing and comparing unit, wherein the analyzing and comparing unit is used for comparing the local characteristics of the image of the key part, extracted by the characteristic extracting unit, with the pre-stored local standard characteristics of the image of the key part, and judging whether the TFT-LCD to be detected is qualified according to a comparing result. By adopting a machine vision detection system, the location and the deletion of the TFT-LCD to be detected are automatically carried out by using a manipulator without manual operation, thus automation is realized; and automatic detection is carried out by comparing the local characteristics of the image of the key part, and thus higher detection precision and efficiency are obtained.
Description
Technical field
The utility model belongs to the automatic producing technology field, relates to the application of machine vision in industry, is specially the vision system that a kind of TFT-LCD of being used for detects.
Background technology
TFT (Thin Film Transistor) LCD is TFT LCD, is a kind of in the active matrix type liquid crystal display (AM-LCD).Liquid crystal flat panel display; TFT-LCD particularly is unique display device of on combination properties such as brightness, contrast, power consumption, life-span, volume and weight, catching up with comprehensively and surpass CRT at present, and its function admirable, large-scale production characteristic are good; Automaticity is high; The cost of raw material is cheap, and development space is wide, with the main product that becomes the new century rapidly.As one of important key foundation parts of electronics and information industry; The substituent of following conventional picture tube display technique, lcd technology is promoting the economic mode of opening of sending out to change, promote upgrading of the industrial structure, drive aspect such as hi-tech development and play an important role.
The TFT-LCD substrate is normally assembled by domestic each enterprise after cutting more at present; In industrial manufacture process; The detection of TFT-LCD adopts manual type to carry out usually; Because the judgement of human eye is difficult for quantification and execution, human eye easy fatigue, people factor such as being in a bad mood, non-stop run for a long time easily, cause present product vision-based detection ubiquity to be judged by accident and the false determination ratio condition with higher, and work efficiency is lower.
The utility model content
The purpose of the utility model is to overcome existing deficiency in the prior art, and the vision system that provides a kind of TFT-LCD of being used for to detect has higher detection precision and efficient, and can realize that TFT-LCD detects automatically.
For achieving the above object, the utility model is realized through following technical scheme: be used for the vision system that TFT-LCD detects, it is characterized in that, comprising:
Be used for TFT-LCD to be measured is fixed on the TFT-LCD detent mechanism of image acquisition region;
Be used to gather the image acquisition units of tested TFT-LCD image;
Be used to extract the feature extraction unit of TFT-LCD key position image-region characteristic;
Key position image-region characteristic that feature extraction unit extracted and the key position image-region standard feature that prestores are done contrast, and judge according to comparing result whether qualified analysis contrasts the unit to tested TFT-LCD.
Said TFT-LCD detent mechanism is provided with mechanical arm.
Said image acquisition units adopts high speed linear array ccd image sensor (CCD) camera, can adjust focal length automatically according to the sharpness of tested TFT-LCD, makes the sharpness of the tested TFT-LCD image of being gathered the highest.
This vision system also is provided with:
The TFT-LCD image that is used for that image acquisition units is gathered carries out the pretreatment unit of pretreatment operation;
Be used for to analyze the output control unit that the judged result that contrasts the unit is exported to automatic rejecting mechanism;
Be used for showing in real time that tested TFT-LCD key position image-region characteristic and the key position image-region standard feature that prestores make the display unit of contrast situation and real time data statistics;
Be used to store key position image-region standard feature and detect memory of data.
Be used for rejecting the automatic rejecting mechanism of defective TFT-LCD product according to the judged result of output control unit.
Said automatic rejecting mechanism is provided with mechanical arm.
The utility model compares that prior art has the following advantages and beneficial effect:
The utility model adopts the Machine Vision Detection system, utilizes mechanical arm to carry out location and the rejecting of tested TFT-LCD automatically, need not manually-operated, has realized robotization; Automatically detect through the contrast of key position image-region characteristic, have higher detection precision and efficient.
Description of drawings
Fig. 1 is the structural representation of the vision system of a kind of TFT-LCD of being used for detection of the utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but the embodiment of the utility model is not limited thereto.
Embodiment
As shown in Figure 1, a kind of vision system that is used for the TFT-LCD detection comprises:
The TFT-LCD detent mechanism is provided with mechanical arm, is used for TFT-LCD to be measured is fixed on image acquisition region;
Image acquisition units adopts high speed linear array ccd image sensor (CCD) camera, is used to gather the image of tested TFT-LCD;
Pretreatment unit, the TFT-LCD image that is used for image acquisition units is gathered carries out pretreatment operation;
Feature extraction unit is used to extract TFT-LCD key position image-region characteristic;
Analyze the contrast unit, key position image-region characteristic that feature extraction unit extracted and the key position image-region standard feature that prestores are done contrast, and judge according to comparing result whether tested TFT-LCD is qualified;
Output control unit is used for the judged result of analyzing the contrast unit is exported to automatic rejecting mechanism;
Display unit is used for showing in real time that tested TFT-LCD key position image-region characteristic and the key position image-region standard feature that prestores do the contrast situation, and the demonstration of real time data statistics;
Storer is used to store key position image-region standard feature and detects data;
Automatically rejecting mechanism is provided with mechanical arm, is used for rejecting defective TFT-LCD product according to the judged result of output control unit.
The foregoing description is the utility model preferred implementation; But the embodiment of the utility model is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of the utility model.
Claims (5)
1. one kind is used for the vision system that TFT-LCD detects, and it is characterized in that, comprising:
Be used for TFT-LCD to be measured is fixed on the TFT-LCD detent mechanism of image acquisition region;
Be used to gather the image acquisition units of tested TFT-LCD image;
Be used to extract the feature extraction unit of TFT-LCD key position image-region characteristic;
Key position image-region characteristic that feature extraction unit extracted and the key position image-region standard feature that prestores are done contrast, and judge according to comparing result whether qualified analysis contrasts the unit to tested TFT-LCD.
2. the vision system that requires described a kind of TFT-LCD of being used for to detect according to right 1, it is characterized in that: said TFT-LCD detent mechanism is provided with mechanical arm.
3. the vision system that requires described a kind of TFT-LCD of being used for to detect according to right 1 is characterized in that: said image acquisition units adopts high speed linear array ccd image sensor camera.
4. the vision system that requires described a kind of TFT-LCD of being used for to detect according to right 1 is characterized in that this vision system also is provided with:
The TFT-LCD image that is used for that image acquisition units is gathered carries out the pretreatment unit of pretreatment operation;
Be used for to analyze the output control unit that the judged result that contrasts the unit is exported to automatic rejecting mechanism;
Be used for showing in real time that tested TFT-LCD key position image-region characteristic and the key position image-region standard feature that prestores make the display unit of contrast situation and real time data statistics;
Be used to store key position image-region standard feature and detect memory of data;
Be used for rejecting the automatic rejecting mechanism of defective TFT-LCD product according to the judged result of output control unit.
5. the vision system that requires described a kind of TFT-LCD of being used for to detect according to right 4, it is characterized in that: said automatic rejecting mechanism is provided with mechanical arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200916349U CN202522805U (en) | 2012-03-13 | 2012-03-13 | Vision system for TFT-LCD (Thin Film Transistor-Liquid Crystal Display) detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012200916349U CN202522805U (en) | 2012-03-13 | 2012-03-13 | Vision system for TFT-LCD (Thin Film Transistor-Liquid Crystal Display) detection |
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| CN202522805U true CN202522805U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200916349U Expired - Fee Related CN202522805U (en) | 2012-03-13 | 2012-03-13 | Vision system for TFT-LCD (Thin Film Transistor-Liquid Crystal Display) detection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965322A (en) * | 2015-07-17 | 2015-10-07 | 深圳晶华显示器材有限公司 | Method for preventing LCD product deficient segment leak detection |
| CN107255874A (en) * | 2017-08-10 | 2017-10-17 | 国网重庆市电力公司电力科学研究院 | A kind of electric energy meter liquid-crystal apparatus fault detection method and system |
-
2012
- 2012-03-13 CN CN2012200916349U patent/CN202522805U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965322A (en) * | 2015-07-17 | 2015-10-07 | 深圳晶华显示器材有限公司 | Method for preventing LCD product deficient segment leak detection |
| CN107255874A (en) * | 2017-08-10 | 2017-10-17 | 国网重庆市电力公司电力科学研究院 | A kind of electric energy meter liquid-crystal apparatus fault detection method and system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150313 |
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| EXPY | Termination of patent right or utility model |