CN103376576B - A kind of automatic test approach of 4K2K V-BY-ONE interface LCDs and system - Google Patents
A kind of automatic test approach of 4K2K V-BY-ONE interface LCDs and system Download PDFInfo
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- CN103376576B CN103376576B CN201310277161.0A CN201310277161A CN103376576B CN 103376576 B CN103376576 B CN 103376576B CN 201310277161 A CN201310277161 A CN 201310277161A CN 103376576 B CN103376576 B CN 103376576B
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Abstract
Do you the invention discloses a kind of 4K2K? the automatic test approach of V-BY-ONE interface liquid crystal display and system, 4K2K? the voltage output of V-BY-ONE signal generator unit accesses the power supply input port of liquid crystal display to be measured, is supplied to the normal operating voltage of liquid crystal panel to be tested; 4K2K? the 4K2K of V-BY-ONE signal generator unit? V-BY-ONE signal output is connected to the signal input of liquid crystal panel to be tested, supply display; Control 4K2K? V-BY-ONE signal generator unit exports display described in, gathers liquid crystal panel image to be measured by industry vidicon; Analyze the liquid crystal panel image to be measured gathered, whether automatic decision liquid crystal panel to be tested is qualified, and test result is outputted to test result output module.Does the present invention pass through 4K2K? whether V-BY-ONE interface detects LCDs automatically qualified, full-automatic detection, and detection efficiency is high, exact height, reduces production cost.
Description
Technical field:
The present invention relates to the detection technique field of LCDs, especially relate to a kind of automatic test approach and system of 4K2KV-BY-ONE interface LCDs.
Background technology:
Along with user's improving constantly multimedia display product image quality, super large screen, ultra high-definition etc. from we life also more and more close to.Ge great liquid crystal panel manufacturer such as group creates photoelectricity, Youda, Samsung, Sharp Corp releases the 4K2K liquid crystal panel of different size, be applied in various multimedia display product, ultra high-definition 4K2K multimedia display product uses V-BY-ONE interface, adopt brand-new data transfer mode to complete the transmission of super large data volume, it seems at present, V-BY-ONE interface is the development trend of a technology, follow-up have more product do ultra high-definition display, even higher resolution.Quality guarantee for the LCDs of new V-BY-ONE interface becomes current Ge great producer at this series products urgent problem of batch production.
The new data transfer mode that V-BY-ONE interface Shi You THine company proposes, the transmission mode of similar LVDS, eDP, iDP, is mainly transmitted by a pair differential signal.
Being meant to " videobyone " of V-BY-ONE interface, namely LVDS or TTL signal is transmitted by " single line ", popular saying just is the reduction of PCB layout, especially the application on large-size screen monitors, such as 4K2K60HzTV LVDS line needs 96 to give me a little screen, but give me a little screen with V-BY-ONE line, only need 18 lines; 4K2K120HzTV LVDS line needs 192 to give me a little screen, but only needs 34 lines by the words of V-BY-ONE line, can greatly reduce the problem in PCB layout like this, but also can reduce the interference problem of EMI/EMC.
The detection method of the display screen of current employing V-BY-ONE interface is: the LCDs of band V-BY-ONE interface is connected to one block of band V-BY-ONE interface output signal plate, different signals is exported to V-BY-ONE interface display by controlling this signal generator manually, artificial naked eyes judge that whether the pattern that V-BY-ONE display screen shows is normal, the method is limited to duty when detecting workman's testing product, there is very large subjectivity and undulatory property in testing result for this reason, the non-constant of consistance, product quality can not be ensured reliably, and efficiency is very low, the bottleneck of the whole production efficiency of current the sector is in the test side of product, Ge great producer constantly increases personnel to ensure whole product output efficiency at p-wire body for this reason, recent year labor cost increases fast, greatly certainly will increase production cost like this.Current multimedia display product industry Ge great producer is all knocking down price to exchange the larger market share for one after another, is therefore necessary to release new detection method, can greatly enhance productivity again under the prerequisite that can ensure product quality.
Summary of the invention:
For the deficiency that prior art exists, the object of this invention is to provide a kind of automatic test approach of 4K2KV-BY-ONE interface liquid crystal display, whether it detects LCDs automatically by 4K2KV-BY-ONE interface qualified, full-automatic detection, detection efficiency is high, exact height, reduces production cost.
For the deficiency that prior art exists, another object of the present invention is to provide a kind of Auto-Test System of 4K2KV-BY-ONE interface liquid crystal display, and it realizes full-automatic detection, and detection efficiency is high, exact height, reduces production cost.
To achieve these goals, the technical solution adopted in the present invention is:
An automatic test approach for 4K2KV-BY-ONE interface liquid crystal display, comprises the following steps,
The voltage output of 4K2KV-BY-ONE signal generator unit accesses the power supply input port of liquid crystal display to be measured, is supplied to the normal operating voltage of liquid crystal panel to be tested;
The 4K2KV-BY-ONE signal output of 4K2KV-BY-ONE signal generator unit is connected to the signal input of liquid crystal panel to be tested, supply display;
Control 4K2KV-BY-ONE signal generator unit exports display described in, gathers liquid crystal panel image to be measured by industry vidicon;
Analyze the liquid crystal panel image to be measured gathered, whether automatic decision liquid crystal panel to be tested is qualified.
In further detecting step, export ater signal by industrial computer and control analysis unit controls 4K2KV-BY-ONE signal generator unit; After startup industry vidicon gathers liquid crystal panel image to be measured, analyze and whether have bright spot to exist; Exist if any bright spot signal and exceed setting permissible range, automatic decision is NG screen, otherwise then automatic decision is qualified screen.
In further detecting step, export pure white signal by industrial computer and control analysis unit controls 4K2KV-BY-ONE signal generator unit; After startup industry vidicon gathers liquid crystal panel image to be measured, analyze and whether have dim spot to exist; Exist if any dark spot signal and exceed setting permissible range system and be judged as that NG shields, otherwise then automatic decision is qualified screen.
In further detecting step, export pure red signal by industrial computer and control analysis unit controls 4K2KV-BY-ONE signal generator unit; Start after industry vidicon gathers liquid crystal panel image to be measured, whether each pixel R component of analysis chart image signal reaches red normal value, detects G, B component value whether close in 0 value or allowed band simultaneously; R, G, B component value exceeds value in setting range and is then judged as that NG shields, otherwise then automatic decision is qualified screen.
In further detecting step, export pure green by industrial computer and control analysis unit controls 4K2KV-BY-ONE signal generator unit; After startup industry vidicon gathers liquid crystal panel image to be measured, whether each pixel of analysis chart image signal B component reaches blue red normal value, detect R, B component value whether close in 0 value or allowed band simultaneously, R, G, B component value exceeds value in setting range and is then judged as that NG shields, otherwise then automatic decision is qualified screen.
In further detecting step, export grayscale signal by industrial computer and control analysis unit controls 4K2KV-BY-ONE signal generator unit; After startup industry vidicon gathers liquid crystal panel image to be measured, whether each pixel rgb value of analysis chart image signal exceeds value in setting range, if exceeded, be judged as that NG shields, otherwise then automatic decision is qualified screen.
In further detecting step, start the image that industry vidicon gathers liquid crystal panel to be measured, whether the outward appearance analyzing liquid crystal panel to be measured exists physical imperfection, comprise cut or foreign matter, if there is physical imperfection, be then judged as that NG shields, otherwise then automatic decision is qualified screen.
A kind of Auto-Test System of 4K2KV-BY-ONE interface liquid crystal display, comprise industrial computer, industry vidicon, 4K2KV-BY-ONE signal generator unit and control analysis unit, control analysis cellular installation is in industrial computer, for control 4K2KV-BY-ONE signal generator unit to liquid crystal panel conveying display to be measured, control industry vidicon and take the image that liquid crystal panel to be measured and analytical industry camera are transported to industrial computer, 4K2KV-BY-ONE signal generator unit is provided with power supply input port for connecting liquid crystal panel to be measured and signal input, 4K2KV-BY-ONE signal generator unit and industry vidicon are connected to industrial computer.
In further technical scheme, Auto-Test System comprises a test result output module, control analysis unit connecting test result output module.
Adopt after said structure, the present invention compared to the prior art advantageously:
Whether the present invention detects LCDs automatically by 4K2KV-BY-ONE interface qualified, full-automatic detection, and detection efficiency is high, exact height, reduces production cost.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is the test schematic diagram of the Auto-Test System of 4K2KV-BY-ONE interface liquid crystal display.
Fig. 2 is the connection diagram of the Auto-Test System of 4K2KV-BY-ONE interface liquid crystal display.
Embodiment:
The following stated is only preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment one
An automatic test approach for 4K2KV-BY-ONE interface liquid crystal display, is shown in shown in Fig. 1-2,
The voltage output of 4K2KV-BY-ONE signal generator unit 2 accesses the power supply input port of liquid crystal display to be measured, is supplied to the normal operating voltage of liquid crystal panel to be tested;
The 4K2KV-BY-ONE signal output of 4K2KV-BY-ONE signal generator unit 2 is connected to the signal input of liquid crystal panel to be tested, supply display;
Control 4K2KV-BY-ONE signal generator unit 2 exports display described in, is gathered the image of liquid crystal panel 1 to be measured by industry vidicon 3;
Analyze the image of the liquid crystal panel to be measured 1 gathered, whether automatic decision liquid crystal panel to be tested is qualified.
Test result is outputted to test result output module.
The concrete detection method of the present invention comprises following detecting step:
Ater signal is exported by industrial computer 4 and control analysis unit controls 4K2KV-BY-ONE signal generator unit 2; After startup industry vidicon 3 gathers the image of liquid crystal panel 1 to be measured, analyze and whether have bright spot to exist; Exist if any bright spot signal and exceed setting permissible range, automatic decision is NG screen, and NG screen is defective screen, otherwise then automatic decision is qualified screen.
Pure white signal is exported by industrial computer 4 and control analysis unit controls 4K2KV-BY-ONE signal generator unit 2; After startup industry vidicon 3 gathers the image of liquid crystal panel 1 to be measured, analyze and whether have dim spot to exist; Exist if any dark spot signal and exceed setting permissible range system and be judged as that NG shields, otherwise then automatic decision is qualified screen.
Pure red signal is exported by industrial computer 4 and control analysis unit controls 4K2KV-BY-ONE signal generator unit 2; Start after industry vidicon 3 gathers the image of liquid crystal panel 1 to be measured, whether each pixel R component of analysis chart image signal reaches red normal value, detects G, B component value whether close in 0 value or allowed band simultaneously; R, G, B component value exceeds value in setting range and is then judged as that NG shields, otherwise then automatic decision is qualified screen.
Pure green is exported by industrial computer 4 and control analysis unit controls 4K2KV-BY-ONE signal generator unit 2; After startup industry vidicon 3 gathers the image of liquid crystal panel 1 to be measured, whether each pixel of analysis chart image signal G component reaches green normal value, detect R, B component value whether close in 0 value or allowed band simultaneously, R, G, B component value exceeds value in setting range and is then judged as that NG shields, otherwise then automatic decision is qualified screen.
Grayscale signal is exported by industrial computer 4 and control analysis unit controls 4K2KV-BY-ONE signal generator unit 2; After startup industry vidicon 3 gathers the image of liquid crystal panel 1 to be measured, whether each pixel rgb value of analysis chart image signal exceeds value in setting range, if exceeded, be judged as that NG shields, otherwise then automatic decision is qualified screen.
Start the image that industry vidicon 3 gathers liquid crystal panel 1 to be measured, whether the outward appearance analyzing liquid crystal panel 1 to be measured exists physical imperfection, comprises cut or foreign matter, if there is physical imperfection, be then judged as that NG shields, otherwise then automatic decision is qualified screen.Whether the present invention the outward appearance of detection display can also exist exception in the LCDs Presentation Function performance automatically detecting 4K2KV-BY-ONE interface simultaneously, as cut, and foreign matter etc. bad order phenomenon.
With industrial computer 4 for master control carrier, different patterns is exported to V-BY-ONE interface LCDs to be detected by the unified coordination V-BY-ONE signal generator unit 2 that controls of control analysis unit, the picture information of LCDs 1 to be measured display is gathered by the industrial camera 3 being connected to industrial computer 4, export test result output module to by analyzing the result after judging, production control line produces the non-defective unit of line and the automatic shunt of defective products.The operator of each for original line production erect-position is changed into existing equipment and automatically carries out testing and controlling by the present invention, realizes the full-automation that liquid crystal display picture detects, and can line production, automatically detects and arrives at a station, save manpower, improve detection efficiency.
Embodiment two
A kind of Auto-Test System of 4K2KV-BY-ONE interface liquid crystal display, it realizes the liquid crystal panel automatic test approach described in embodiment one, as shown in Figure 1-2, comprise industrial computer 4, industry vidicon 3, 4K2KV-BY-ONE signal generator unit 2 and control analysis unit, control analysis cellular installation is in industrial computer 4, control analysis unit is used for detecting whether connect liquid crystal panel 1 to be measured, control analysis unit provides power supply and conveying display for control 4K2KV-BY-ONE signal generator unit 2 to liquid crystal panel 1 to be measured, control analysis unit controls industry vidicon 3 takes liquid crystal panel to be measured, control analysis element analysis industry vidicon 3 is transported to the image of industrial computer 4, 4K2KV-BY-ONE signal generator unit 2 is provided with power supply input port and signal input, for connecting liquid crystal panel 1 to be measured, for providing power supply and conveying display to liquid crystal panel 1 to be measured, 4K2KV-BY-ONE signal generator unit 2 and industry vidicon 3 are connected to industrial computer 4.
Auto-Test System comprises a test result output module, control analysis unit connecting test result output module, and control analysis unit exports test result output module to by analyzing the result after judging.
Above content is only preferred embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (9)
1. an automatic test approach for 4K2KV-BY-ONE interface liquid crystal display, is characterized in that:
The voltage output of 4K2KV-BY-ONE signal generator unit accesses the power supply input port of liquid crystal display to be measured, is supplied to the normal operating voltage of liquid crystal panel to be tested;
The 4K2KV-BY-ONE signal output of 4K2KV-BY-ONE signal generator unit is connected to the signal input of liquid crystal panel to be tested, supply display;
Control 4K2KV-BY-ONE signal generator unit exports display described in, gathers liquid crystal panel image to be measured by industry vidicon;
Analyze the liquid crystal panel image to be measured gathered, whether automatic decision liquid crystal panel to be tested is qualified;
Test result is outputted to test result output module.
2. the automatic test approach of a kind of 4K2KV-BY-ONE interface liquid crystal display according to claim 1, is characterized in that: export ater signal by industrial computer and control analysis unit controls 4K2KV-BY-ONE signal generator unit; After startup industry vidicon gathers liquid crystal panel image to be measured, analyze and whether have bright spot to exist; Exist if any bright spot signal and exceed setting permissible range, automatic decision is NG screen, otherwise then automatic decision is qualified screen.
3. the automatic test approach of a kind of 4K2KV-BY-ONE interface liquid crystal display according to claim 1, is characterized in that: export pure white signal by industrial computer and control analysis unit controls 4K2KV-BY-ONE signal generator unit; After startup industry vidicon gathers liquid crystal panel image to be measured, analyze and whether have dim spot to exist; Exist if any dark spot signal and exceed setting permissible range system and be judged as that NG shields, otherwise then automatic decision is qualified screen.
4. the automatic test approach of a kind of 4K2KV-BY-ONE interface liquid crystal display according to claim 1, is characterized in that: export pure red signal by industrial computer and control analysis unit controls 4K2KV-BY-ONE signal generator unit; Start after industry vidicon gathers liquid crystal panel image to be measured, whether each pixel R component of analysis chart image signal reaches red normal value, detects G, B component value whether close in 0 value or allowed band simultaneously; R, G, B component value exceeds value in setting range and is then judged as that NG shields, otherwise then automatic decision is qualified screen.
5. the automatic test approach of a kind of 4K2KV-BY-ONE interface liquid crystal display according to claim 1, is characterized in that: export pure green by industrial computer and control analysis unit controls 4K2KV-BY-ONE signal generator unit; After startup industry vidicon gathers liquid crystal panel image to be measured, whether each pixel of analysis chart image signal G component reaches green normal value, detect R, B component value whether close in 0 value or allowed band simultaneously, R, G, B component value exceeds value in setting range and is then judged as that NG shields, otherwise then automatic decision is qualified screen.
6. the automatic test approach of a kind of 4K2KV-BY-ONE interface liquid crystal display according to claim 1, is characterized in that: export grayscale signal by industrial computer and control analysis unit controls 4K2KV-BY-ONE signal generator unit; After startup industry vidicon gathers liquid crystal panel image to be measured, whether each pixel rgb value of analysis chart image signal exceeds value in setting range, if exceeded, be judged as that NG shields, otherwise then automatic decision is qualified screen.
7. the automatic test approach of a kind of 4K2KV-BY-ONE interface liquid crystal display according to claim 1, it is characterized in that: start the image that industry vidicon gathers liquid crystal panel to be measured, whether the outward appearance analyzing liquid crystal panel to be measured exists physical imperfection, comprise cut or foreign matter, if there is physical imperfection, then be judged as that NG shields, otherwise then automatic decision is qualified screen.
8. one kind uses the Auto-Test System of the automatic test approach of the 4K2KV-BY-ONE interface liquid crystal display of one of claim 1-7, it is characterized in that: comprise industrial computer, industry vidicon, 4K2KV-BY-ONE signal generator unit and control analysis unit, control analysis cellular installation is in industrial computer, for control 4K2KV-BY-ONE signal generator unit to liquid crystal panel conveying display to be measured, control industry vidicon and take the image that liquid crystal panel to be measured and analytical industry camera are transported to industrial computer, 4K2KV-BY-ONE signal generator unit is provided with power supply input port for connecting liquid crystal panel to be measured and signal input, 4K2KV-BY-ONE signal generator unit and industry vidicon are connected to industrial computer.
9. the Auto-Test System of the automatic test approach of 4K2KV-BY-ONE interface liquid crystal display according to claim 8, is characterized in that: comprise a test result output module, control analysis unit connecting test result output module.
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| CN104917988A (en) * | 2014-03-10 | 2015-09-16 | 北京阿格思科技有限公司 | V-BY-ONE interface high-speed image acquisition card |
| CN105791731B (en) * | 2014-12-15 | 2018-04-20 | 北京阿格思科技有限公司 | V by One interface ultra high-definition image signal sources |
| CN104849885B (en) * | 2015-06-08 | 2017-09-29 | 武汉精测电子技术股份有限公司 | The integrated apparatus and method of liquid crystal module test are realized based on industrial computer |
| CN109560871A (en) * | 2018-12-05 | 2019-04-02 | 深圳市埃尔法光电科技有限公司 | A kind of optical-electric module and photoelectricity line for image transmitting interface V-By-One design |
| CN114446210B (en) * | 2022-01-28 | 2023-12-29 | 冠捷显示科技（厦门）有限公司 | Scaler main board detection method adapting to liquid crystal panel |
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