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Method and device for external optical compensation for AMOLED

A technology of optical compensation and luminous brightness, which is applied to static indicators, instruments, etc., can solve the problems of poor compensation effect, low accuracy of optical compensation brightness measurement, and inapplicability of large-size AMOLED detection, etc., to achieve good compensation effect and improve accuracy degree of effect

Active Publication Date: 2017-12-22
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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AI Technical Summary

Problems solved by technology

[0003] At present, the accuracy of external optical compensation brightness measurement is low, and the compensation effect is poor, so it is not suitable for large-size AMOLED detection

Method used

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  • Method and device for external optical compensation for AMOLED
  • Method and device for external optical compensation for AMOLED
  • Method and device for external optical compensation for AMOLED

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the description of the drawings and specific embodiments.

[0027] Such as Figure 1 to Figure 3 As shown, a method of external optical compensation for AMOLED, including:

[0028] The image collected by AMOLED will be used to measure the difference in light emission from pixel to pixel;

[0029] According to the Gamma luminance standard, the driving signal of each sub-pixel is adjusted.

[0030] Such as Figure 4 Shown, the present invention also provides a kind of device that AMOLED is carried out external optical compensation, comprises lens 1, CCD camera 2, AMOLED sample 3, analog signal generator 4 and image processing system 5, wherein, described AMOLED sample 3 and Described analog signal generator 4 is connected, and described analog signal generator 4 is connected with described image processing system 5, and described image processing system 5 is connected with described CCD camera 2 ...

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Abstract

The invention provides a method for external optical compensation for an AMOLED, and the method comprises the following steps: S1, measuring the brightness difference between the pixels of a display screen through an image collected by the AMOLED; S2, adjusting a drive current according to the brightness first-gray standard characteristics described by a Gamma curve. The invention also provides a device for external optical compensation for the AMOLED. The beneficial effects of the invention are that the method improves the precision of compensation brightness measurement, is better in compensation effect, and is suitable for the detection of a large-size AMOLED.

Description

technical field [0001] The invention relates to computer vision detection, in particular to a method and device for performing external optical compensation on AMOLED. Background technique [0002] The active matrix organic light-emitting diode display (AMOLED) has the characteristics of fast response, high contrast, wide viewing angle, wide color gamut, and no backlight source. With the increase of AMOLED demand and production capacity, optical inspection, as the back-end process step of AMOLED production, plays an important role in ensuring the quality of ex-factory products and analyzing the defects in the front-end process. During the production process of AMOLED displays, due to materials, processes and other reasons, some products may have uneven screen display brightness, that is, Mura. The external compensation system for the AMOLED process is to eliminate the mura of the display screen with poor mura through advanced sub-pixel optical imaging technology and softwar...

Claims

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Application Information

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IPC IPC(8): G09G3/3233
Inventor 肖君军姚杏枝李雄杰
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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