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Method and device for linear crosstalk compensation of amoled display screen

A technology of crosstalk compensation and display screen, applied in the field of AMOLED display, can solve the problems that cannot be completely eliminated

Active Publication Date: 2022-06-28
昇显微电子(苏州)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional solutions often reduce the coupling capacitance by improving the manufacturing process of the AMOLED drive circuit, that is, by changing the distribution and distance between the pixel electrode and the data line, the influence of the coupling capacitance on the driving voltage of the pixel electrode can be reduced, thereby reducing the line type. Crosstalk phenomenon, but can not be completely eliminated, in order to further improve the display effect of AMOLED display, it is necessary to design and develop a compensation circuit module to eliminate linear crosstalk in the AMOLED driver chip

Method used

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  • Method and device for linear crosstalk compensation of amoled display screen
  • Method and device for linear crosstalk compensation of amoled display screen
  • Method and device for linear crosstalk compensation of amoled display screen

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Embodiment

[0058] Example: see figure 1 The normal effect (left) and the display effect of the linear crosstalk phenomenon (right), showing the linear crosstalk phenomenon mentioned in the background art.

[0059] Example: see figure 2 The 2T1C in the simplified drive circuit shows the AMOLED display drive circuit mentioned in the background art.

[0060] Example: see Figure 3-6 , a method for compensation of linear crosstalk of AMOLED display screen, comprising the following steps:

[0061] S1. Perform change intensity statistics on the data line voltage data of adjacent upper and lower scanning lines;

[0062] S2. Calculate the single-line compensation value of linear crosstalk according to the overall change intensity of the current scanning line;

[0063] S3. Filter and sum the compensation values ​​required for the voltages of the data lines of the nearby scanning lines, and calculate the compensation values ​​of the linear crosstalk for multiple lines;

[0064] S4, superimpo...

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Abstract

The invention discloses a method and a device for linear crosstalk compensation of an AMOLED display, belonging to the field of AMOLED display technology, and a method and device for compensating a linear crosstalk of an AMOLED display. The method herein specifically includes: scanning adjacent up and down lines Statistics of the change intensity of the data line voltage data; calculate the linear crosstalk single-line compensation value according to the overall change intensity of the current scanning line; filter and sum the compensation values ​​required for the data line voltage of each nearby scanning line to calculate the multi-line crosstalk compensation value ; Superimpose the linear crosstalk multi-line compensation value on the input data of the current scanning line and output it. The method proposed by the present invention can effectively eliminate the abnormality of the picture caused by the linear crosstalk, especially when the display content includes black characters on a white background, black frames on a white background, and black lines on a white background, the display effect can be significantly improved.

Description

technical field [0001] The present invention relates to the technical field of AMOLED display, and more particularly, to a method and device for compensating for linear crosstalk of AMOLED display screen. Background technique [0002] AMOLED display has the advantages of active light emission, high contrast ratio, fast response speed, low energy consumption, thin and light, etc. However, when the contrast ratio of the display image is high, the phenomenon of linear crosstalk often occurs, which greatly affects the display effect. [0003] In simple terms, crosstalk is a phenomenon in which the electromagnetic energy transmitted on the line is coupled into the adjacent lines through distributed parameters due to the existence of distributed capacitance and distributed inductance between lines, resulting in electromagnetic interference. In the AMOLED display driving circuit, the driving voltage ELVDD of the pixel electrode will be disturbed by the voltage Vdata of the data li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3258
CPCG09G3/3258G09G2320/0209
Inventor 孙权吴樟福秦良
Owner 昇显微电子(苏州)股份有限公司