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A pixel current compensation method and system for a display panel

A display panel and current compensation technology, applied in static indicators, instruments, etc., can solve the problems of cumbersome compensation process and poor compensation effectiveness, and achieve the effects of good compensation effect, uniform current distribution, and simple compensation process.

Active Publication Date: 2018-05-15
WUHAN TIANMA MICRO ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a pixel current compensation method and system for a display panel to solve the defects in the prior art that special compensation circuits need to be added for compensation, compensation effectiveness is poor, and the compensation process is cumbersome.

Method used

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  • A pixel current compensation method and system for a display panel
  • A pixel current compensation method and system for a display panel
  • A pixel current compensation method and system for a display panel

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Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through implementation with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the embodiment of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] Such as figure 1 As shown, it is a flowchart of a pixel current compensation method for a display panel provided by an embodiment of the present invention. The technical solution of this embodiment is applicable to the case of uneven display of the display panel, and the pixel current compensation method of the display panel can be implemented by...

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Abstract

Embodiments of the present invention disclose a pixel current compensation method and system for a display panel. The compensation method includes: testing the actual current value of a sub-pixel on the display panel at the i-th gray level; The current value is adjusted to the preset target current value of the ith grayscale of the subpixel, and the target grayscale value when the subpixel is at the target current value corresponding to the ith grayscale is recorded; The data distribution table of the target grayscale value at the current time is used to perform current compensation on at least one sub-pixel of the display panel to be compensated. In the present invention, any sub-pixel of the same type of mass-produced display panel can be compensated according to the obtained data distribution table, so that the current of the entire display panel is evenly distributed. Compared with the prior art, no dedicated compensation circuit needs to be added, and The compensation effect is good, the compensation process is simple, and it will not cause new uneven display due to uneven current distribution when working for a long time.

Description

technical field [0001] Embodiments of the present invention relate to display technologies, and in particular to a method and system for compensating pixel currents of a display panel. Background technique [0002] Light emitters in display panels, especially active-matrix organic light-emitting diodes (AMOLEDs) for low-temperature polysilicon thin-film transistor liquid crystal displays (LTPS-TFT), often have threshold voltages due to uneven crystallization of polysilicon during the manufacturing process. The drift makes the AMOLED display uneven, and accordingly also causes the display panel to display unevenly. [0003] In order to improve the display unevenness of the AMOLED, internal compensation and external compensation methods are usually used for display compensation in the prior art. The internal compensation method refers to the use of a pixel circuit with a threshold voltage compensation function to eliminate the influence of threshold voltage drift. The externa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233
Inventor 孙阔赵洋
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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