CN103376576A - Automatic test method and system for liquid crystal display panel with 4k2k V-BY-ONE interface - Google Patents
Automatic test method and system for liquid crystal display panel with 4k2k V-BY-ONE interface Download PDFInfo
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- CN103376576A CN103376576A CN2013102771610A CN201310277161A CN103376576A CN 103376576 A CN103376576 A CN 103376576A CN 2013102771610 A CN2013102771610 A CN 2013102771610A CN 201310277161 A CN201310277161 A CN 201310277161A CN 103376576 A CN103376576 A CN 103376576A
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Abstract
The invention discloses automatic test method and system for a liquid crystal display panel with a 4k2k V-BY-ONE interface. A voltage output port of a 4k2k V-BY-ONE signal generator is connected to a power input port of a liquid crystal display panel to be tested and provides normal operating voltage for the liquid crystal display to be tested. A 4k2k V-BY-ONE signal output port of the 4k2k V-BY-ONE signal generator is connected to a signal input port of the liquid crystal display panel to be tested and used for providing test signals. The 4k2k V-BY-ONE signal generator is controlled to output a display signal, and an industrial camera is used to acquire an image of the liquid crystal display panel to be tested. After the acquired image of the liquid crystal display panel is analyzed, whether the liquid crystal display panel is qualified or not is judged automatically, and the test result is output to a test result output module. The method and the system have the advantages that whether the liquid crystal display panel is qualified or not is automatically detected through the 4k2k V-BY-ONE interface, testing is fully automated, testing efficiency and testing accuracy are high, and production cost is lower.
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 4K2K V-BY-ONE interface LCDs.
Background technology:
Along with the user to the improving constantly of multimedia display product image quality, super large screen, ultra high-definition etc. from we life also more and more close to.Each large liquid crystal panel manufacturer such as group create photoelectricity, Youda, Samsung, Sharp Corp releases the 4K2K liquid crystal panel of different size, be applied in the various multimedia display products, ultra high-definition 4K2K multimedia display product uses the V-BY-ONE interface, adopt brand-new data transfer mode to finish the transmission of super large data volume, it seems at present, the V-BY-ONE interface is the development trend of a technology, follow-uply have more product and do ultra high-definition and show, even higher resolution.Become at present each large producer at this series products urgent problem of batch production for the quality guarantee of the LCDs of new V-BY-ONE interface.
The V-BY-ONE interface is the new data transfer mode that has THine company to propose, and the transmission mode of similar LVDS, eDP, iDP is mainly transmitted by a pair of differential signal.
The meaning of V-BY-ONE interface is " video by one ", namely transmit LVDS or TTL signal by " single line ", popular saying is exactly to have reduced PCB layout, especially the application on large-size screen monitors, for example 4K2K60Hz TV gives me a little screen with 96 of LVDS line needs, but give me a little screen with the V-BY-ONE line, only need 18 lines; 4K2K120Hz TV needs 192 with the LVDS line and gives me a little screen, but only needs 34 lines with the words of V-BY-ONE line, can greatly reduce like this problem on PCB layout, but also can reduce the interference problem of EMI/EMC.
Adopt at present the detection method of the display screen of V-BY-ONE interface to be: the LCDs with the V-BY-ONE interface is connected to a band V-BY-ONE interface output signal plate, by controlling manually the different signal of this signal generator output to V-BY-ONE interface display screen, artificial naked eyes judge whether the pattern that shows on the V-BY-ONE display screen is normal, the method is subject to duty when detecting workman's testing product, testing result exists very large subjectivity and undulatory property for this reason, the non-constant of consistance, product quality can not be ensured reliably, and efficient is very low, at present the bottleneck of the whole production efficiency of the sector is in the test side of product, for this reason each large producer the p-wire body constantly the increase personnel guarantee whole product output efficient; Recent year labor cost rapid growth certainly will increase production cost so greatly.Each large producer of multimedia display product industry is all knocking down price to exchange for the larger market share one after another at present, therefore is necessary to release new detection method, can greatly enhance productivity again under the prerequisite that can guarantee product quality.
Summary of the invention:
Deficiency for the prior art existence, the automatic test approach that the purpose of this invention is to provide a kind of 4K2K V-BY-ONE interface liquid crystal display, whether it detects LCDs automatically by 4K2K V-BY-ONE interface qualified, the full-automatic detection, detection efficiency is high, accurately height reduces production costs.
For the deficiency that prior art exists, another object of the present invention provides a kind of Auto-Test System of 4K2K V-BY-ONE interface liquid crystal display, and it realizes full-automatic the detection, and detection efficiency is high, and accurately height reduces production costs.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of automatic test approach of 4K2K V-BY-ONE interface liquid crystal display may further comprise the steps,
The voltage output of 4K2K V-BY-ONE signal generator unit accesses the power supply input port of liquid crystal display to be measured, offers the normal operating voltage of liquid crystal panel to be tested;
The 4K2K V-BY-ONE signal output of 4K2K V-BY-ONE signal generator unit is connected to the signal input of liquid crystal panel to be tested, supplies with detection signal;
Control 4K2K V-BY-ONE signal generator unit is exported a display, gathers liquid crystal panel image to be measured by industry vidicon;
Analyze the liquid crystal panel image to be measured that gathers, whether automatic decision liquid crystal panel to be tested is qualified.
Further in the detecting step, by industrial computer and control analysis unit controls 4K2K V-BY-ONE signal generator unit output ater signal; Whether after the startup industry vidicon gathers liquid crystal panel image to be measured, analyzing has bright spot to exist; Have and exceed the setting permissible range if any the bright spot signal, automatic decision is the NG screen, otherwise then automatic decision is qualified screen.
Further in the detecting step, by industrial computer and control analysis unit controls 4K2K V-BY-ONE signal generator unit output pure white signal; Whether after the startup industry vidicon gathers liquid crystal panel image to be measured, analyzing has dim spot to exist; Exist and exceed if any dark spot signal and set the permissible range system and be judged as the NG screen, otherwise then automatic decision is qualified screen.
Further in the detecting step, export pure red signal by industrial computer and control analysis unit controls 4K2K V-BY-ONE signal generator unit; After starting industry vidicon and gathering liquid crystal panel image to be measured, whether each pixel R component of analysis image signal reaches red normal value, detects simultaneously G, B component value whether near 0 value or allowed band; R, G, B component value exceed the interior value of setting range and then are judged as the NG screen, otherwise then automatic decision is qualified screen.
Further in the detecting step, export pure green by industrial computer and control analysis unit controls 4K2K V-BY-ONE signal generator unit; After the startup industry vidicon gathers liquid crystal panel image to be measured, whether each pixel B component of analysis image signal reaches blue red normal value, detect simultaneously R, B component value whether near 0 value or allowed band, R, G, the B component value exceeds the interior value of setting range and then is judged as the NG screen, otherwise then automatic decision is qualified screen.
Further in the detecting step, by industrial computer and control analysis unit controls 4K2K V-BY-ONE signal generator unit output GTG signal; After the startup industry vidicon gathered liquid crystal panel image to be measured, whether each pixel rgb value of analysis image signal exceeded value in the setting range, shield if exceed then be judged as NG, otherwise then automatic decision was qualified screen.
Further in the detecting step, start the image that industry vidicon gathers liquid crystal panel to be measured, whether the outward appearance of analyzing liquid crystal panel to be measured exists physical imperfection, comprise cut or foreign matter, if there is physical imperfection, then be judged as the NG screen, otherwise then automatic decision is qualified screen.
A kind of Auto-Test System of 4K2K V-BY-ONE interface liquid crystal display, comprise industrial computer, industry vidicon, 4K2K V-BY-ONE signal generator unit and control analysis unit, the control analysis cellular installation is in industrial computer, be used for control 4K2K V-BY-ONE signal generator unit and carry display to liquid crystal panel to be measured, the control industry vidicon is taken the image that liquid crystal panel to be measured and analytical industry camera are transported to industrial computer, 4K2K V-BY-ONE signal generator unit is provided be used to the power supply input port and the signal input that connect liquid crystal panel to be measured, and 4K2K V-BY-ONE signal generator unit and industry vidicon are connected to industrial computer.
Further in the technical scheme, Auto-Test System comprises a test result output module, and control analysis unit connecting test is output module as a result.
After adopting said structure, the present invention is compared with existing technology the advantage that has and is:
Whether the present invention detects LCDs automatically by 4K2K V-BY-ONE interface qualified, the full-automatic detection, and detection efficiency is high, and accurately height reduces production costs.
Description of drawings:
The present invention is described further below in conjunction with accompanying drawing:
Fig. 1 is the test synoptic diagram of the Auto-Test System of 4K2K V-BY-ONE interface liquid crystal display.
Fig. 2 is the connection diagram of the Auto-Test System of 4K2K V-BY-ONE interface liquid crystal display.
Embodiment:
The following stated only is preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment one
A kind of automatic test approach of 4K2K V-BY-ONE interface liquid crystal display is seen shown in Fig. 1-2,
The voltage output of 4K2K V-BY-ONE signal generator unit 2 accesses the power supply input port of liquid crystal display to be measured, offers the normal operating voltage of liquid crystal panel to be tested;
The 4K2K V-BY-ONE signal output of 4K2K V-BY-ONE signal generator unit 2 is connected to the signal input of liquid crystal panel to be tested, supplies with detection signal;
Control 4K2K V-BY-ONE signal generator unit 2 outputs one display is by the image of industry vidicon 3 collections liquid crystal panel 1 to be measured;
Analyze the image of the liquid crystal panel to be measured 1 that gathers, whether automatic decision liquid crystal panel to be tested is qualified.
Test result is outputed to test result output module.
The concrete detection method of the present invention comprises following detecting step:
By industrial computer 4 and control analysis unit controls 4K2K V-BY-ONE signal generator unit 2 output ater signals; Whether after starting the image of industry vidicon 3 collections liquid crystal panel 1 to be measured, analyzing has bright spot to exist; Have and exceed the setting permissible range if any the bright spot signal, automatic decision is the NG screen, and the NG screen is defective screen, otherwise then automatic decision is qualified screen.
By industrial computer 4 and control analysis unit controls 4K2K V-BY-ONE signal generator unit 2 output pure white signals; Whether after starting the image of industry vidicon 3 collections liquid crystal panel 1 to be measured, analyzing has dim spot to exist; Exist and exceed if any dark spot signal and set the permissible range system and be judged as the NG screen, otherwise then automatic decision is qualified screen.
By industrial computer 4 and the pure red signal of control analysis unit controls 4K2K V-BY-ONE signal generator unit 2 outputs; After starting industry vidicon 3 and gathering the image of liquid crystal panel 1 to be measured, whether each pixel R component of analysis image signal reaches red normal value, detects simultaneously G, B component value whether near 0 value or allowed band; R, G, B component value exceed the interior value of setting range and then are judged as the NG screen, otherwise then automatic decision is qualified screen.
By industrial computer 4 and the pure green of control analysis unit controls 4K2K V-BY-ONE signal generator unit 2 outputs; After starting the image of industry vidicon 3 collections liquid crystal panel 1 to be measured, whether each pixel G component of analysis image signal reaches green normal value, detect simultaneously R, B component value whether near 0 value or allowed band, R, G, the B component value exceeds the interior value of setting range and then is judged as the NG screen, otherwise then automatic decision is qualified screen.
By industrial computer 4 and control analysis unit controls 4K2K V-BY-ONE signal generator unit 2 output GTG signals; After starting the image of industry vidicon 3 collections liquid crystal panel 1 to be measured, whether each pixel rgb value of analysis image signal exceeds value in the setting range, shield if exceed then be judged as NG, 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 of analyzing liquid crystal panel 1 to be measured exists physical imperfection, comprises cut or foreign matter, if there is physical imperfection, then be judged as the NG screen, otherwise then automatic decision is qualified screen.The present invention the LCDs Presentation Function performance that automatically detects 4K2K V-BY-ONE interface simultaneously can also detection display outward appearance whether exist unusually, such as cut, foreign matter etc. bad order phenomenon.
Take industrial computer 4 as the master control carrier, coordinate the different pattern of V-BY-ONE signal generator unit 2 outputs to V-BY-ONE interface LCDs to be detected by the unified control in control analysis unit, gather the picture information that LCDs 1 to be measured shows by the industrial camera 3 that is connected to industrial computer 4, export the result who analyzes after judging to test result output module, the production control line produces the non-defective unit of line and the automatic shunt of defective products.The present invention changes the operator of original each erect-position of line production into existing equipment and automatically tests and control, and realizes the full-automation that the liquid crystal display picture detects, and can line production, automatically detects and arrives at a station, and has saved manpower, has improved detection efficiency.
Embodiment two
A kind of Auto-Test System of 4K2K V-BY-ONE interface liquid crystal display, it realizes embodiment one described liquid crystal panel automatic test approach, shown in Fig. 1-2, comprise industrial computer 4, industry vidicon 3,4K2K V-BY-ONE signal generator unit 2 and control analysis unit, the control analysis cellular installation is in industrial computer 4, the control analysis unit is for detection of whether connecting liquid crystal panel 1 to be measured, the control analysis unit is used for control 4K2K V-BY-ONE signal generator unit 2 to be provided power supply and carries display to liquid crystal panel 1 to be measured, control analysis unit controls industry vidicon 3 is taken liquid crystal panel to be measured, control analysis element analysis industry vidicon 3 is transported to the image of industrial computer 4,4K2K V-BY-ONE signal generator unit 2 is provided with power supply input port and signal input, be used for connecting liquid crystal panel 1 to be measured, be used for power supply being provided and carrying display to liquid crystal panel 1 to be measured, 4K2K V-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, and control analysis unit connecting test is output module as a result, and the result that the control analysis unit will be analyzed after judging exports test result output module to.
Above content is preferred embodiment of the present invention only, for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, and this description should not be construed as limitation of the present invention.
Claims (9)
1. the automatic test approach of a 4K2K V-BY-ONE interface liquid crystal display is characterized in that:
The voltage output of 4K2K V-BY-ONE signal generator unit accesses the power supply input port of liquid crystal display to be measured, offers the normal operating voltage of liquid crystal panel to be tested;
The 4K2K V-BY-ONE signal output of 4K2K V-BY-ONE signal generator unit is connected to the signal input of liquid crystal panel to be tested, supplies with detection signal;
Control 4K2K V-BY-ONE signal generator unit is exported a display, gathers liquid crystal panel image to be measured by industry vidicon;
Analyze the liquid crystal panel image to be measured that gathers, whether automatic decision liquid crystal panel to be tested is qualified;
Test result is outputed to test result output module.
2. the automatic test approach of a kind of 4K2K V-BY-ONE interface liquid crystal display according to claim 1 is characterized in that: by industrial computer and control analysis unit controls 4K2K V-BY-ONE signal generator unit output ater signal; Whether after the startup industry vidicon gathers liquid crystal panel image to be measured, analyzing has bright spot to exist; Have and exceed the setting permissible range if any the bright spot signal, automatic decision is the NG screen, otherwise then automatic decision is qualified screen.
3. the automatic test approach of a kind of 4K2K V-BY-ONE interface liquid crystal display according to claim 1 is characterized in that: by industrial computer and control analysis unit controls 4K2K V-BY-ONE signal generator unit output pure white signal; Whether after the startup industry vidicon gathers liquid crystal panel image to be measured, analyzing has dim spot to exist; Exist and exceed if any dark spot signal and set the permissible range system and be judged as the NG screen, otherwise then automatic decision is qualified screen.
4. the automatic test approach of a kind of 4K2K V-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 4K2K V-BY-ONE signal generator unit; After starting industry vidicon and gathering liquid crystal panel image to be measured, whether each pixel R component of analysis image signal reaches red normal value, detects simultaneously G, B component value whether near 0 value or allowed band; R, G, B component value exceed the interior value of setting range and then are judged as the NG screen, otherwise then automatic decision is qualified screen.
5. the automatic test approach of a kind of 4K2K V-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 4K2K V-BY-ONE signal generator unit; After the startup industry vidicon gathers liquid crystal panel image to be measured, whether each pixel G component of analysis image signal reaches green normal value, detect simultaneously R, B component value whether near 0 value or allowed band, R, G, the B component value exceeds the interior value of setting range and then is judged as the NG screen, otherwise then automatic decision is qualified screen.
6. the automatic test approach of a kind of 4K2K V-BY-ONE interface liquid crystal display according to claim 1 is characterized in that: by industrial computer and control analysis unit controls 4K2K V-BY-ONE signal generator unit output GTG signal; After the startup industry vidicon gathered liquid crystal panel image to be measured, whether each pixel rgb value of analysis image signal exceeded value in the setting range, shield if exceed then be judged as NG, otherwise then automatic decision was qualified screen.
7. the automatic test approach of a kind of 4K2K V-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 of analyzing liquid crystal panel to be measured exists physical imperfection, comprise cut or foreign matter, if there is physical imperfection, then be judged as the NG screen, otherwise then automatic decision is qualified screen.
8. a right to use requires the Auto-Test System of automatic test approach of the 4K2K V-BY-ONE interface liquid crystal display of one of 1-7, it is characterized in that: comprise industrial computer, industry vidicon, 4K2K V-BY-ONE signal generator unit and control analysis unit, the control analysis cellular installation is in industrial computer, be used for control 4K2K V-BY-ONE signal generator unit and carry display to liquid crystal panel to be measured, the control industry vidicon is taken the image that liquid crystal panel to be measured and analytical industry camera are transported to industrial computer, 4K2K V-BY-ONE signal generator unit is provided be used to the power supply input port and the signal input that connect liquid crystal panel to be measured, and 4K2K V-BY-ONE signal generator unit and industry vidicon are connected to industrial computer.
9. the Auto-Test System of the automatic test approach of 4K2K V-BY-ONE interface liquid crystal display according to claim 8, it is characterized in that: comprise a test result output module, control analysis unit connecting test is output module as a result.
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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 |
| CN105791731A (en) * | 2014-12-15 | 2016-07-20 | 北京阿格思科技有限公司 | V-by-One interface ultrahigh-definition image signal source |
| 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 |
| CN114446210A (en) * | 2022-01-28 | 2022-05-06 | 冠捷显示科技（厦门）有限公司 | Scaler mainboard detection method adaptive to liquid crystal panel |
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