CN1532540A - Detecting system and method of display device - Google Patents
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- 230000005622 photoelectricity Effects 0.000 claims description 36
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Abstract
The display device detecting system and method has one display matched in use. The display includes a lot of pixels, and each of the pixels includes several sub-pixels. The detecting system includes mainly one figure generator for display specific patterns and colors in the display; one photoelectronic sensed image pick-up for converting the pattern in the display into output image; and one image processing system for processing the output image to identify the abnormal pixels of the display. The figure generator can control the display to produce sequential figures of pixel sub-group and different figures in different times, and each of pixel in the pixel sub-group of the figure drives only some sub-pixel in the pixel in each time.
Description
Technical field
The invention relates to a kind of detection system and method for display device.
Background technology
Along with the progress of science and technology, display manufacturing science and technology heals and becomes accurate, strides forward toward more and more higher resolution.Yet the also therefore more and more difficult detecting of contingent flaw situation in display production.General display Defect Detection many with human eye as the interpretation instrument, yet each QC personnel's vision interpretation difference tends to produce dispute, and can't be as the absolute management that quantizes on the QC.
Replace human eye in automated optical detection (AOI) mode and should be feasible way as Defect Detection.Its step is slightly mixed imaging lens with the photoelectric sensing element of multi-thread or array structure approximately, and the image capture when display is lighted gets off, and can analyze the flaw of display to be measured again via image processing.
At present general display manufacturer requires to inspect the flaw of inferior pixel (sub-pixel), that is the redness on each pixel, green, blue three pixel flaws all need detect.And for the AOI mode, when spatial resolution will improve, enlargement ratio must be improved, yet for large-size and the bigger display of Pixel Dimensions (pixel size), then need the multiple wire system of the certain pixel of collocation or the photoelectric sensing element of array architecture relatively, otherwise because the raising of enlargement ratio can make the visual range (FOV) of sensing element diminish, adopt the part that makes up corresponding different displays with a plurality of sensing elements and must change, or with the x-y translation stage the mobile in regular turn different time of sensing element is measured the zone of different displays, can detect whole display viewing area, this kind method is not only consuming time, and simultaneously extra detection board expenditure also can increase the manufacturing cost of display.
The existing purpose of reaching Defect Detection with the AOI device of utilizing.But these methods all have a great shortcoming, and that is exactly consuming time and expensive; Preceding once had propose that the LCD detection method is to detect a plurality of regions on the screen simultaneously with a plurality of image sensing capture devices, though this kind method is quick, will significantly improve equipment cost; Also there is research to mention a kind of collocation one figure actuator in addition, the resolution of display is reduced, image sensing capture device with the low pixel of collocation, yet only can detect the flaw of pixel, and can't detect brightness, colourity or the radiation intensity inequality of display, and can only detect the flaw of pixel layer, and can't detect the flaw of time pixel (R/G/B).
Summary of the invention
Fundamental purpose of the present invention is in detection system that a kind of display device is provided and detection method, in order to do reaching the testing result that is accurate to time pixel level fast, reduces the checkout equipment cost, saves detection time, and simplifies and detect step.
Another object of the present invention is in detection system that a kind of display device is provided and detection method, so that can detect the unequal flaw of brightness, colourity and radiation intensity of display device.
For reaching above-mentioned purpose, the invention provides a kind of detection system of display device, be that collocation one display uses, wherein this display device includes a plurality of pixels, and each pixel has pixel a plurality of times, it is characterized in that this detection system mainly comprises:
One graph generating device, this graph generating device provide a signal makes this display be that the subregion shows default pattern or color;
One photoelectricity sensing image capture device, this photoelectricity sensing image capture device are that this pattern or the acquisition of this color that this display is shown is an image; And
One image processing system, this image processing system are to analyze this image that shows that this photoelectricity sensing image capture device is captured;
Wherein this graph generating device is controlled this display repeats to produce a plurality of same pixel subgroup in regular turn on this display sequence pattern;
This pixel sub group is made up of adjacent a plurality of pixel; And in each picture frame scan pixel of the only driving in each pixel in each pixel sub group in the cycle.
Wherein this display is a LCD.
Wherein this display is a plasma display panel.
Wherein this display is a Field Emission Display.
Wherein this display is an organic electro-luminescent display.
Wherein this photoelectricity sensing image capture device comprises an image-forming component, a single-line type, multiple wire system or array photoelectric sensing element, and image capture output unit; And this photoelectric sensing element is a charge coupled cell, a complementary metal oxide semiconductor element or a light diode array.
Wherein this photoelectric sensing element has the radiation intensity value that the equate function spectral response is this pixel of sensing or this time pixel.
Wherein this photoelectric sensing element has and looks to imitate the function spectral response be the brightness value of this pixel of sensing or this time pixel.
Wherein this photoelectric sensing element have the color matching function spectral response be this pixel of sensing or this time pixel chromatic value.
The detection method of a kind of display of the present invention is in order to detecting the viewing area flaw of this display, and this display includes a plurality of pixels, and each pixel has pixel a plurality of times, it is characterized in that, this method comprises:
(1) provide a graph generating device, this graph generating device is that this display of control shows default pattern or color in this display subregion; One photoelectricity sensing image capture device, this photoelectricity sensing image capture device are acquisition pattern or colors that this display is shown; And an image processing system, this image processing system is analyzed this image that this photoelectricity sensing image capture device is captured;
(2) this graph generating device is controlled this display repeats to produce a plurality of same pixel subgroup in regular turn on this display sequence pattern; Wherein this pixel sub group is made up of adjacent a plurality of pixel; And in each picture frame scan pixel of the only driving in each pixel in each pixel sub group in the cycle; And
(3) this photoelectricity sensing image capture device sensing and capture this sequence pattern, and be sent to this image processing system, to obtain an image analysing computer result.
Wherein this display is displays such as LCD, Field Emission Display or plasma display panel; Or the display made from technology such as LCOS, organic and inorganic EL or light emitting diode or element or liquid crystal projector or the projection display made from technology such as LCOS or DMD or element.
Wherein this photoelectricity sensing image capture device comprises an image-forming component, a single-line type, multiple wire system or array photoelectric sensing element, and image capture output unit; And this photoelectric sensing element is a charge coupled cell, a complementary metal oxide semiconductor element or a light diode array.
Wherein this photoelectric sensing element has the radiation intensity value that the equate function spectral response is this pixel of sensing or this time pixel.
Wherein this photoelectric sensing element has and looks to imitate the function spectral response be the brightness value of this pixel of sensing or this time pixel.
Wherein has the chromatic value that the color matching function spectral response is this pixel of sensing or this time pixel in this photoelectric sensing element.
The detection method of a kind of display of the present invention is in order to detecting the viewing area flaw of this display, and this display includes a plurality of pixels, and each pixel has pixel a plurality of times, it is characterized in that, this method comprises:
(1) provide a graph generating device, this graph generating device is that this display of control shows default pattern or color in this display subregion; One photoelectricity sensing image capture device, this photoelectricity sensing image capture device are acquisition pattern or colors that this display is shown; And an image processing system, this image processing system is analyzed this image that this photoelectricity sensing image capture device is captured;
(2) this graph generating device is controlled this display produces a plurality of same pixel subgroup on this display sequence pattern; Wherein this pixel sub group is made up of adjacent a plurality of pixel; The sequence pattern that each pixel group is formed can not need identical, and in each picture frame scan pixel of the only driving in each pixel in each pixel sub group in the cycle; And
(3) this photoelectricity sensing image capture device sensing and capture this sequence pattern, and be sent to this image processing system, to obtain an image analysing computer result.
Wherein this display is displays such as LCD, Field Emission Display or plasma display panel; Or the display made from LCOS, organic EL, inorganic EL or led technology or element or liquid crystal projector or the projection display made from LCOS or DMD technology or element.
Wherein this photoelectricity sensing image capture device comprises an image-forming component, a single-line type, multiple wire system or array photoelectric sensing element, and image capture output unit; And this photoelectric sensing element is a charge coupled cell, a complementary metal oxide semiconductor element or a light diode array.
Wherein this photoelectric sensing element has the radiation intensity value that the equate function spectral response is this pixel of sensing or this time pixel.
Wherein this photoelectric sensing element has and looks to imitate the function spectral response be the brightness value of this pixel of sensing or this time pixel.
Wherein has the chromatic value that the color matching function spectral response is this pixel of sensing or this time pixel in this photoelectric sensing element.
Description of drawings
For allowing the auditor can more understand technology contents of the present invention, as follows especially exemplified by two preferred embodiment and description of drawings, wherein:
Fig. 1 is the synoptic diagram of display device detection system of the present invention.
Fig. 2 a, Fig. 2 b, Fig. 2 c, Fig. 2 d are that the pixel of the embodiment of the invention one is lighted precedence diagram.
Fig. 3 a, Fig. 3 b, Fig. 3 c, Fig. 3 d, Fig. 3 e, Fig. 3 f, Fig. 3 g, Fig. 3 h are that the pixel of the embodiment of the invention two is lighted precedence diagram.
Fig. 4 is the process flow diagram of display device detection method of the present invention.
Embodiment
The detection system of a kind of display of the present invention, be that collocation one display uses, wherein this display includes a plurality of pixels (pixel), and each pixel has a plurality of pixels (sub-pixel), and this detection system mainly comprises: a figure (pattern) generation device, this graph generating device provide a signal makes display be that the subregion shows default pattern or color; One photoelectricity sensing image capture device, this photoelectricity sensing image capture device are that pattern or the color acquisition that display is shown is an image; And an image processing system, this image processing system is to analyze the display light inductance to survey image capture unit institute picked image; Wherein graph generating device may command display repeats to produce the sequence pattern of a plurality of same pixel subgroup (subset) in regular turn on this display; And pixel sub group is made up of adjacent a plurality of pixel; And scan a pixel of the only driving in each pixel in each pixel sub group (subpixel) in the cycle at each picture frame.
See also Fig. 4, this is the process flow diagram of display device detection method of the present invention.The spatial frequency of wherein designed pattern imaging on photoelectric sensing element must be less than or equal to the spatial frequency of sensing element.Array driving display with 1024 * 768 pixels is an example, when use pixel enlargement ratio is 1/2 imaging system, the full frame pixel of display will be imaged in array photoelectric sensing element 512 * 384 pixels in, designed figure must be reduced to resolution at the most 512 * 384 pixels or followingly just can obtain image clearly this moment, and the pixel sub group (subset) that can adopt 2 * 2 pixels under this situation is as a unit.
Definite embodiment of the present invention sees also the explanation of each embodiment.
Be noted that the display that display device detection system and method for the present invention are suitable for is also unrestricted, can be existing any display.This display includes, but not limited to LCD LCD (Liquid crystal display), Field Emission Display FED (Field EmissionDisplay) or plasma display panel PDP displays such as (Plasma Display Panel); Or the display made from technology such as LCOS (Liquid crystal on silicon), organic EL (OLED), inorganic EL or LED or element or liquid crystal projector (LCD Projector) or the projection display made from LCOS or DMD technology such as (digital micro-mirror device) or element.Employed photoelectricity sensing image capture device comprises an image-forming component in the display detection system of the present invention, one single-line type, multiple wire system or array photoelectric sensing element and an image capture output unit, wherein this photoelectric sensing element can be the existing photoelectric sensing element that is suitable for, be preferably charge coupled cell (CCD), complementary metal oxide semiconductor (CMOS) or light diode array (photodiode array); Display detection system of the present invention and the detectable flaw of method are not limit, and preferablely detect local flaws such as single-point pixel flaw, multiple spot pixel flaw, and can detect as colourity inequality, brightness disproportionation, the unequal flaw in a big way of radiation intensity.
Embodiment one, pixel sub group comprise four pixels
See also Fig. 2 a to Fig. 2 d, the pixel that this four figure is a present embodiment is lighted sequential schematic, and display 1 is a LCD in the present embodiment, and photoelectricity sensing image capture device is a CCD digital camera.And when graphic designs is subgroup 2 * 2 pixels, only light the inferior pixel of the solid color of one of them pixel in each subgroup at every turn, therefore detect the inferior pixel flaw of a certain color and need light four different pictures and gradation measurement in turn.In Fig. 2 a with every adjacent four pixels 51,52,53,54 as a pixel sub group, and each pixel in respectively comprise red time pixel 511, green time pixel 512, blue sub-pixels 513.Therefore in each pixel sub group, only light a wherein pixel 512 of a pixel 51.Then see also Fig. 2 b, the figure that this is produced for hookup 2a, pixel 51 has been closed in this moment subgroup, and green the pixel 532 that changes pixel 53 into lighted.Fig. 2 c and Fig. 2 d then show the pixel of being lighted in regular turn 52,54.The resolution of photoelectricity sensing image capture device 3 can be dropped to half of display 1 by this method, for example if the resolution of LCD to be measured is 1024 * 768, then the actual pixels of CCD digital camera only needs 512 * 384, that is actual pixels only needs the digital camera of about 200,000 pixels to satisfy the demands.
Embodiment two, pixel sub group comprise eight pixels
See also Fig. 3 a to 3h, the pixel that this eight figure is a present embodiment is lighted sequential schematic.The employed display of present embodiment is a LCD, and photoelectricity sensing image capture device is a CCD digital camera.Please earlier referring to Fig. 3 a, as shown in the figure, present embodiment is to be a pixel sub group with hexagonal adjacent eight pixels.Each pixel in each pixel sub group is lighted order in regular turn as shown in Fig. 3 a to 3h.Method as shown in this embodiment then can further reduce the resolution of photoelectricity sensing image capture device.
Can learn that from above embodiment the present invention can reach the function that reduces optics sensing element resolution in the photoelectricity sensing image acquisition system really, so on many production lines, need to carry out simultaneously when display detects just can significantly reduce cost; In addition, from the embodiment of the invention, also can find out the figure that utilizes difformity that pattern generator produces, size, can adjust according to existing optics sensing element resolution, and positively detect the flaw of three pixels of red, green, blue in the display.
The foregoing description only is to give an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claim is described certainly, but not only limits to the foregoing description.
Claims (21)
1. the detection system of a display device is that collocation one display uses, and wherein this display device includes a plurality of pixels, and each pixel has pixel a plurality of times, it is characterized in that this detection system mainly comprises:
One graph generating device, this graph generating device provide a signal makes this display be that the subregion shows default pattern or color;
One photoelectricity sensing image capture device, this photoelectricity sensing image capture device are that this pattern or the acquisition of this color that this display is shown is an image; And
One image processing system, this image processing system are to analyze this image that shows that this photoelectricity sensing image capture device is captured;
Wherein this graph generating device is controlled this display repeats to produce a plurality of same pixel subgroup in regular turn on this display sequence pattern;
This pixel sub group is made up of adjacent a plurality of pixel; And in each picture frame scan pixel of the only driving in each pixel in each pixel sub group in the cycle.
2. the detection system of display device as claimed in claim 1 is characterized in that, wherein this display is a LCD.
3. the detection system of display device as claimed in claim 1 is characterized in that, wherein this display is a plasma display panel.
4. the detection system of display device as claimed in claim 1 is characterized in that, wherein this display is a Field Emission Display.
5. the detection system of display device as claimed in claim 1 is characterized in that, wherein this display is an organic electro-luminescent display.
6. the detection system of display device as claimed in claim 1 is characterized in that, wherein this photoelectricity sensing image capture device comprises an image-forming component, a single-line type, multiple wire system or array photoelectric sensing element, and image capture output unit; And this photoelectric sensing element is a charge coupled cell, a complementary metal oxide semiconductor element or a light diode array.
7. the detection system of display device as claimed in claim 6 is characterized in that, wherein this photoelectric sensing element has the radiation intensity value that the equate function spectral response is this pixel of sensing or this time pixel.
8. the detection system of display device as claimed in claim 6 is characterized in that, wherein this photoelectric sensing element has and looks to imitate the function spectral response be the brightness value of this pixel of sensing or this time pixel.
9. the detection system of display device as claimed in claim 6 is characterized in that, wherein this photoelectric sensing element have the color matching function spectral response be this pixel of sensing or this time pixel chromatic value.
10. the detection method of a display is in order to detecting the viewing area flaw of this display, and this display includes a plurality of pixels, and each pixel has pixel a plurality of times, it is characterized in that, this method comprises:
(1) provide a graph generating device, this graph generating device is that this display of control shows default pattern or color in this display subregion; One photoelectricity sensing image capture device, this photoelectricity sensing image capture device are acquisition pattern or colors that this display is shown; And an image processing system, this image processing system is analyzed this image that this photoelectricity sensing image capture device is captured;
(2) this graph generating device is controlled this display repeats to produce a plurality of same pixel subgroup in regular turn on this display sequence pattern; Wherein this pixel sub group is made up of adjacent a plurality of pixel; And in each picture frame scan pixel of the only driving in each pixel in each pixel sub group in the cycle; And
(3) this photoelectricity sensing image capture device sensing and capture this sequence pattern, and be sent to this image processing system, to obtain an image analysing computer result.
11. the detection method of display as claimed in claim 10 is characterized in that, wherein this display is displays such as LCD, Field Emission Display or plasma display panel; Or the display made from technology such as LCOS, organic and inorganic EL or light emitting diode or element or liquid crystal projector or the projection display made from technology such as LCOS or DMD or element.
12. the detection method of display as claimed in claim 10 is characterized in that, wherein this photoelectricity sensing image capture device comprises an image-forming component, a single-line type, multiple wire system or array photoelectric sensing element, and image capture output unit; And this photoelectric sensing element is a charge coupled cell, a complementary metal oxide semiconductor element or a light diode array.
13. the detection method of display as claimed in claim 12 is characterized in that, wherein this photoelectric sensing element has the radiation intensity value that the equate function spectral response is this pixel of sensing or this time pixel.
14. the detection method of display as claimed in claim 12 is characterized in that, wherein this photoelectric sensing element has and looks to imitate the function spectral response be the brightness value of this pixel of sensing or this time pixel.
15. the detection method of display as claimed in claim 12 is characterized in that, wherein has the chromatic value that the color matching function spectral response is this pixel of sensing or this time pixel in this photoelectric sensing element.
16. the detection method of a display is in order to detecting the viewing area flaw of this display, this display includes a plurality of pixels, and each pixel has pixel a plurality of times, it is characterized in that, this method comprises:
(1) provide a graph generating device, this graph generating device is that this display of control shows default pattern or color in this display subregion; One photoelectricity sensing image capture device, this photoelectricity sensing image capture device are acquisition pattern or colors that this display is shown; And an image processing system, this image processing system is analyzed this image that this photoelectricity sensing image capture device is captured;
(2) this graph generating device is controlled this display produces a plurality of same pixel subgroup on this display sequence pattern; Wherein this pixel sub group is made up of adjacent a plurality of pixel; The sequence pattern that each pixel group is formed can not need identical, and in each picture frame scan pixel of the only driving in each pixel in each pixel sub group in the cycle; And
(3) this photoelectricity sensing image capture device sensing and capture this sequence pattern, and be sent to this image processing system, to obtain an image analysing computer result.
17. the detection method of display as claimed in claim 16 is characterized in that, wherein this display is displays such as LCD, Field Emission Display or plasma display panel; Or the display made from LCOS, organic EL, inorganic EL or led technology or element or liquid crystal projector or the projection display made from LCOS or DMD technology or element.
18. the detection method of display as claimed in claim 16 is characterized in that, wherein this photoelectricity sensing image capture device comprises an image-forming component, a single-line type, multiple wire system or array photoelectric sensing element, and image capture output unit; And this photoelectric sensing element is a charge coupled cell, a complementary metal oxide semiconductor element or a light diode array.
19. the detection method of display as claimed in claim 18 is characterized in that, wherein this photoelectric sensing element has the radiation intensity value that the equate function spectral response is this pixel of sensing or this time pixel.
20. the detection method of display as claimed in claim 18 is characterized in that, wherein this photoelectric sensing element has and looks to imitate the function spectral response be the brightness value of this pixel of sensing or this time pixel.
21. the detection method of display as claimed in claim 18 is characterized in that, wherein has the chromatic value that the color matching function spectral response is this pixel of sensing or this time pixel in this photoelectric sensing element.
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| CNA03107278XA CN1532540A (en) | 2003-03-21 | 2003-03-21 | Detecting system and method of display device |
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| CNA03107278XA CN1532540A (en) | 2003-03-21 | 2003-03-21 | Detecting system and method of display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101278332B (en) * | 2005-09-28 | 2011-01-05 | 夏普株式会社 | Display system, display device, display method |
| CN104422584A (en) * | 2013-09-05 | 2015-03-18 | 技嘉科技股份有限公司 | Accommodating device for providing light shielding environment and light shielding test system |
| CN108303424A (en) * | 2018-01-02 | 2018-07-20 | 京东方科技集团股份有限公司 | Display panel testing and its detection method |
| CN108445022A (en) * | 2018-03-19 | 2018-08-24 | 无锡睿途自控科技有限公司 | A kind of glass is residual just to remove detection mode |
| CN109932160A (en) * | 2019-03-05 | 2019-06-25 | 武汉精立电子技术有限公司 | AOI and densitometer detection system and method |
| TWI712839B (en) * | 2018-12-27 | 2020-12-11 | 光遠科技股份有限公司 | Display apparatus |
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2003
- 2003-03-21 CN CNA03107278XA patent/CN1532540A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101278332B (en) * | 2005-09-28 | 2011-01-05 | 夏普株式会社 | Display system, display device, display method |
| CN104422584A (en) * | 2013-09-05 | 2015-03-18 | 技嘉科技股份有限公司 | Accommodating device for providing light shielding environment and light shielding test system |
| CN104422584B (en) * | 2013-09-05 | 2017-06-23 | 技嘉科技股份有限公司 | The accommodating device and shading test system of shading environment are provided |
| CN108303424A (en) * | 2018-01-02 | 2018-07-20 | 京东方科技集团股份有限公司 | Display panel testing and its detection method |
| CN108445022A (en) * | 2018-03-19 | 2018-08-24 | 无锡睿途自控科技有限公司 | A kind of glass is residual just to remove detection mode |
| CN108445022B (en) * | 2018-03-19 | 2020-11-03 | 无锡尚实电子科技有限公司 | Detection mode for removing residual glass |
| TWI712839B (en) * | 2018-12-27 | 2020-12-11 | 光遠科技股份有限公司 | Display apparatus |
| US11290628B2 (en) | 2018-12-27 | 2022-03-29 | Dynascan Technology Corp. | Display apparatus |
| US11750910B2 (en) | 2018-12-27 | 2023-09-05 | Dynascan Technology Corp. | Display apparatus |
| CN109932160A (en) * | 2019-03-05 | 2019-06-25 | 武汉精立电子技术有限公司 | AOI and densitometer detection system and method |
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