CN104157230A - OLED displayer pixel measurement method - Google Patents
OLED displayer pixel measurement method Download PDFInfo
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- CN104157230A CN104157230A CN201410407482.2A CN201410407482A CN104157230A CN 104157230 A CN104157230 A CN 104157230A CN 201410407482 A CN201410407482 A CN 201410407482A CN 104157230 A CN104157230 A CN 104157230A
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Abstract
The invention discloses an OLED displayer pixel measurement method. The measurement method comprises the following steps: a) grouping pixels of an OLED displayer; b) further subdividing the pixels in the same group into sub-pixels; c) measuring light-emitting information of the sub-pixels in the same group of the OLED displayer; and d) after carrying out grouping measurement on the sub-pixels of all groups of the OLED displayer, combining the light-emitting information of the sub-pixels of all groups, and thus the measurement of the pixels of the OLED displayer is finished. With the measurement method above, the test efficiency is high; the measurement method not only can be applied to the test of the sample in the development stage, but also can be suitable for mass test of the display device in the production stage; an image acquisition device with low resolution can be utilized to carry out accurate test on the high-resolution display device, and meanwhile, the device does not need to be moved.
Description
Technical field
The present invention relates to display technique field, relate in particular to a kind of measuring method of 0LED display.
Background technology
Organic Light Emitting Diode (OLED) display is made up of some pixels, and each pixel comprises again several sub-pixels.According to the classification of sub-pixel, display device can be divided into RGB system and RGBW system, each pixel packets of RGB system is containing 1 red sub-pixel, 1 green sub-pixels and 1 blue subpixels; Recently the RGBW system occurring comprises 1 red sub-pixel, 1 green sub-pixels, 1 blue subpixels and 1 white sub-pixels.R sub-pixel, G sub-pixel and the B sub-pixel corresponding with three primary colours RGB, ideally every sub pixel only sends a kind of light of primary colours, and R sub-pixel only sends pure red light, and G sub-pixel only sends pure green light, and B sub-pixel only sends the light of ethereal blue.In existing actual production process, for the characteristic of testing OLED display conventionally adopts two class testing methods, the first is carried out entirety to display device and is taken pictures, and analyzes its brightness.But owing to will accurately testing the luminosity of the each sub-pixel of display device, the resolution of image capture device must be far away higher than the resolution of display device.Along with improving constantly of display device resolution, the requirement of image capture device resolution is exceeded to actual productive capacity.Use state-of-the-art industrial camera, this method can not accurately be tested all sub-pixels of high-resolution display device.Another kind of method of testing is once only to test the region that display device is very little, completes the test to whole display device by the mode of mobile device (image capture device or tested display device).This method efficiency is very low, and the time that completes once test is long, can not solve the test in enormous quantities in the production phase.
Summary of the invention
In view of this, the invention provides a kind of measuring method of pixel of oLED display, described measuring method testing efficiency is high, not only can be applied to the test of development stage to sample, also be applicable to the in enormous quantities test of production phase to display device, technical scheme of the present invention is as follows:
The measuring method of the pixel of a kind of oLED display provided by the invention, described measuring method comprises the steps:
A) pixel of oLED display is divided into groups, by the N of described oLED display
1individual pixel is divided into N
2individual group, in described group by M
1individual pixel forms,
,wherein, N
1>=1, M
1>=1, N
2>=1, N
1the sum of all pixels order of described oLED display, the number of pixels M of each grouping
1can be different; Pixel in same group meets following requirement: M in same group
1when individual pixel is simultaneously luminous, interference-free between light emitting pixel in same group, between described pixel, refer to without interruption: the pixel in same group is mapped between the photosensitive unit of the image capture device of measuring oLED display and keeps mutual interference-free distance.
B) OLED group pixels can be further subdivided into sub-pixel grouping, and each group pixels is decomposed into K sub-group pixels; K is the sub-pixel number that forms this pixel.Measure the illuminated message of the sub-pixel in same group of OLED display, the sub-pixel in OLED display point in same group is inputted identical parameter makes it luminous, and image capture device gathers the illuminated message of sub-pixel in same group of OLED display now.
C) after the sub-pixel of all groupings of OLED display is measured, the illuminated message of the sub-pixel of all groupings is combined, complete the measurement of all sub-pixel illuminated message of OLED display.
The sub-pixel illuminated message gathering in described measuring method is monochrome information and/or colour purity information.
Sub-pixel in described measuring method in same group is inputted identical parameter and is referred to: identical sub-pixel input GTG and sub-pixel time shutter.
Described measuring method can adopt at least one image capture device to gather the illuminated message of the sub-pixel of oLED display.The illuminated message of the sub-pixel of image capture device collection is the luminescent image pixel point set of image format, be a luminous sub-pixel point of the corresponding oLED display of pixel of multiple image capture devices collections, oLED display corresponding image pixel point set of luminous sub-pixel point in other words.In the time extracting sub-pixel monochrome information or colouring information, the corresponding relation of model oLED display sub-pixel and image pixel point set, then concentrates a pixel to analyze, process to image pixel point, obtains the luminosity of display device sub-pixel.Once test can obtain all selected sub-pixels luminosity corresponding with a kind of input parameter.All groupings are tested with identical input parameter, remerged and just obtain together the luminosity that all sub-pixels are corresponding with a kind of input parameter.So, described measuring method can also complete the accurate test to high-resolution display device with the not high image capture device of resolution.
In described measuring method, when sub-pixel is inputted identical parameter, as described in oLED display sub-pixel not luminous, increase the central point of the luminescent image pixel point set that the described image capture device of its correspondence gathers; When sub-pixel stops inputting identical parameter, as described in oLED display sub-pixel always when luminous can not closing, delete the central point of the luminescent image pixel point set that the described image capture device of its correspondence gathers.
The characteristics of luminescence measuring method of described oLED display, can either be applicable to RGB system and also go for RGBW system.
The measuring method testing efficiency of oLED display of the present invention is high, not only can be applied to the test of development stage to sample, is also applicable to the in enormous quantities test of production phase to display device.Further, can also complete the accurate test to high-resolution display device with the not high image capture device of resolution, not need mobile device simultaneously.
Brief description of the drawings
The group pixels schematic diagram of Fig. 1 embodiment of the present invention one;
The luminescent image point set of the pixel of Fig. 2 embodiment of the present invention one and corresponding sub-pixel.
Embodiment
Below in conjunction with embodiments of the invention, technical scheme of the present invention is described, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain, belongs to the scope that the present invention protects.
Embodiment mono-
The measuring method of the oLED display of the embodiment mono-RGB system that provides comprises the steps:
A) pixel of oLED display is divided into groups, 16 pixels of described oLED display are divided into 4 groups, in described each group, formed by 4 pixels, 4 pixels in described same group meet following requirement: when in same group, 4 pixels are simultaneously luminous, interference-free between light emitting pixel, between described pixel, refer to without interruption: 4 pixels in same group are mapped between the photosensitive unit of the image capture device of measuring oLED display and keep mutual interference-free distance.
B) pixel in same group can be further subdivided into sub-pixel, in same group, each pixel is made up of 3 sub-pixels, 3 for forming the sub-pixel number of this pixel, the illuminated message of the sub-pixel in same group of measurement OLED display, in OLED display, divide the sub-pixel in same group to input identical sub-pixel input GTG and sub-pixel time shutter, make it luminous, adopt 1 image capture device to gather the now monochrome information of sub-pixel in same group of oLED display 3 times, form luminescent image pixel point set as described in Figure 2.
C) sub-pixel of 4 of oLED display groupings carries out, after grouping mea-sure, the monochrome information of the sub-pixel of 4 groupings being combined, and completes the measurement of the pixel of oLED display.
Described measuring method step b) or step c) in, input sub-pixel input GTG and sub-pixel time shutter are when parameter, when described oLED display sub-pixel is not luminous, should increase the central point of the luminescent image pixel point set of the described image capture device collection of its correspondence; While stopping inputting sub-pixel input GTG and sub-pixel time shutter, described oLED display sub-pixel luminous can not closing always, should delete the central point of the luminescent image pixel point set that the described image capture device of its correspondence gathers.
Measuring method testing efficiency described in employing the present embodiment one is high, not only can be applied to the test of development stage to sample, is also applicable to the in enormous quantities test of production phase to display device; Can also complete the accurate test to high-resolution display device with the not high image capture device of resolution, not need mobile device simultaneously.
It will be understood by those skilled in the art that for the measuring method of the oLED display described in the present embodiment, both gone for RGB system display, also go for RGBW system display, the embodiment of the present invention does not limit this.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.Be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the wide region consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a measuring method for the pixel of oLED display, is characterized in that, described measuring method comprises the steps:
The pixel of oLED display is divided into groups, by the N of described oLED display
1individual pixel is divided into N
2individual group, in described group by M
1individual pixel forms,
,wherein, N
1>=1, M
1>=1, N
2>=1, N
1the sum of all pixels order of described oLED display, the number of pixels M of each grouping
1can be different; Pixel in same group meets following requirement: M in same group
1when individual pixel is simultaneously luminous, interference-free between light emitting pixel in same group, between described pixel, refer to without interruption: the pixel in same group is mapped between the photosensitive unit of the image capture device of measuring oLED display and keeps mutual interference-free distance;
OLED group pixels can be further subdivided into sub-pixel grouping, and each group pixels is decomposed into the grouping of K sub-pixel; K is the sub-pixel number that forms this pixel; Measure the illuminated message of the sub-pixel in same group of OLED display, the sub-pixel in OLED display point in same group is inputted identical parameter makes it luminous, and image capture device gathers the illuminated message of sub-pixel in same group of OLED display now;
After the sub-pixel of all groupings of OLED display is measured, the illuminated message of the sub-pixel of all groupings is combined, complete the measurement of all sub-pixel illuminated message of OLED display.
2. the measuring method of the pixel of a kind of oLED display as claimed in claim 1, is characterized in that, the sub-pixel illuminated message gathering in described measuring method is monochrome information and/or colour purity information.
3. the measuring method of the pixel of a kind of oLED display as described in claim as arbitrary in claim 1 or 2, it is characterized in that, the sub-pixel in described measuring method in same group is inputted identical parameter and is referred to: identical sub-pixel input GTG and sub-pixel time shutter.
4. the measuring method of the pixel of a kind of OLED display as claimed in claim 3, is characterized in that, described measuring method can adopt at least one image capture device to gather the illuminated message of the sub-pixel of oLED display.
5. the measuring method of the pixel of a kind of OLED display as claimed in claim 3, is characterized in that, described measuring method can adopt the illuminated message of the sub-pixel of 1 image capture device multi collect oLED display.
6. the measuring method of the pixel of a kind of OLED display as described in claim as arbitrary in claim 4 or 5, is characterized in that, the illuminated message of the sub-pixel of image capture device collection is the luminescent image pixel point set of image format.
7. the measuring method of the pixel of a kind of OLED display as claimed in claim 6, it is characterized in that, in described measuring method, when sub-pixel is inputted identical parameter, as as described in oLED display sub-pixel not luminous, increase the central point of the luminescent image pixel point set that the described image capture device of its correspondence gathers; When sub-pixel stops inputting identical parameter, as described in oLED display sub-pixel always when luminous can not closing, delete the central point of the luminescent image pixel point set that the described image capture device of its correspondence gathers.
8. the measuring method of the pixel of a kind of oLED display as claimed in claim 7, is characterized in that, described measuring method can be applicable to RGB system and also go for RGBW system.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109767711A (en) * | 2019-03-14 | 2019-05-17 | 京东方科技集团股份有限公司 | Fault detection method, device, system and the storage medium of display panel |
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| CN102111624A (en) * | 2010-12-30 | 2011-06-29 | 中国科学院长春光学精密机械与物理研究所 | Luminance/chrominance information collection method for pixels of LED display screen |
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| US20040174323A1 (en) * | 2002-07-26 | 2004-09-09 | Canon Kabushiki Kaisha | Method of measuring luminance of image display apparatus, method of manufacturing the same, method and apparatus for adjusting characteristics of the same |
| CN101441109A (en) * | 2008-12-29 | 2009-05-27 | 长春希达电子技术有限公司 | Three-dimensional light intensity distribution testing method and apparatus of LED display device display pixel |
| CN101916539A (en) * | 2010-08-20 | 2010-12-15 | 西安诺瓦电子科技有限公司 | System and method for correcting brightness and chromaticity of LED display screen point by point |
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