Grayscale compensation method and device for driving tft, display panel thereof, and display device

A compensation method and display panel technology, which can be applied to static indicators, instruments, etc., can solve the problem of low gray-scale display being bright, and achieve the effect of uniform display and avoiding over-compensation.

Active Publication Date: 2021-09-24
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology

[0004] Based on this, it is necessary to provide a gray scale compensation method and device for driving a TFT for the problem of overcompensation when compensating for low gray scales in the traditional K value detection method, resulting in brighter low gray scale displays. display panel, display device

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  • Grayscale compensation method and device for driving tft, display panel thereof, and display device
  • Grayscale compensation method and device for driving tft, display panel thereof, and display device
  • Grayscale compensation method and device for driving tft, display panel thereof, and display device

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[0045] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. A preferred embodiment of the application is shown in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0046] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to and integrally integrated with the other element, or there may be an intervening element at the same time. The terms "mounted", "one end", "the other end" and similar expressions are used herein for the purpose of description only.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commo...

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Abstract

The present application discloses a grayscale compensation method and device for driving a TFT, its display panel, and a display device. The method includes the following steps: obtaining the detection current-voltage ratio of each grayscale of the driving TFT; The maximum value among them is confirmed as the first K value; the gray scale corresponding to the first K value is confirmed as the middle gray scale; several detection current voltage ratios corresponding to low gray scales are obtained, and the detection current corresponding to each low gray scale is The voltage ratio is fitted to obtain the second K value; when the gray scale to be compensated for driving the TFT is a low gray scale, data compensation is performed according to the second K value for the gray scale to be compensated; when the gray scale to be compensated for driving the TFT is high In the gray scale, data compensation is performed on the gray scale to be compensated according to the first K value, and then the low gray scale K value compensation for the driving TFT is realized, which avoids overcompensation in the low gray scale K value compensation stage of the driving TFT, and realizes the display device in the Both low grayscale and high grayscale show uniformity.

Description

technical field [0001] The present application relates to the field of display technology, and more specifically, to a grayscale compensation method and device for driving TFTs, a display panel thereof, and a display device. Background technique [0002] With the continuous development and progress of display technologies such as LED displays, more and more display products have been brought. Since the drivers used in the above displays are all used in the saturation region of the driving TFT, and there are device differences, it is necessary to compensate the K value of the driving TFT (driving TFT). Experiments have shown that when compensating for low grayscales with the traditional K value detection method, overcompensation will occur, resulting in brighter low grayscale displays. [0003] During the implementation process, the inventors found at least the following problems in the traditional technology: the traditional K value detection method, when compensating for l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32G09G3/3208
CPCG09G3/32G09G3/3208G09G2320/0276
Inventor 王增梁鹏飞
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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