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Display device and driving method thereof

A technology of a display device and a driving method, which is applied to static indicators, instruments, etc., can solve problems such as poor compensation effects, and achieve the effect of eliminating purple dots and avoiding poor display

Active Publication Date: 2022-08-05
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present application provide a display device and its driving method to alleviate the technical problem of poor compensation effect in the driving process of the existing display panel

Method used

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  • Display device and driving method thereof

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Embodiment Construction

[0057]The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0058] In the existing display panel, the PWM mode and the DC mode use a set of gamma bands, so the mura of the low-brightness mid-grayscale in the DC mode is the same as the high-brightness low-grayscale mura in the PWM mode. For example, the normal maximum display brightness of PWM mode is 500nit (nits), and the calculation formula of the gamma curve is:

[0059] L / Lmax=(Gray / 255)^2.2;

[0060] Among them, L is the brightness, Lmax is the m...

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Abstract

This application provides a display device and its driver method; the display device driver method by obtaining the first driver parameter and first compensation value of the display device first, and then determine the display of the display device's first driver parameter and first compensation value to determine the display display to display the display display.The abnormal driving parameter of the device; then determine the second compensation value of the display device according to the abnormal driver parameter of the display device; then use the second compensation value and the first driver parameter to the display device.When the compensation effect is poor in the display panel, the compensation value of the display panel is modified to modify the first compensation value to the second compensation value. Because the second compensation value is less than the first compensation value, it makes the display panel not will notExcessive compensation appears, eliminating the purple dots in the display panel, and avoiding poor display panels.

Description

technical field [0001] The present application relates to the field of display technology, and in particular, to a display device and a driving method thereof. Background technique [0002] In order to achieve different display brightness, the display panel needs to be dimmed. The existing dimming modes of the display panel include a pulse width modulation (PWM) mode and a direct current (DC) dimming mode. Light mode is widely used because there is no screen flickering. [0003] For the current display panel, due to the difference in process stability, the brightness of some areas of the display panel cannot reach an ideal state, resulting in uneven brightness (mura) of the display panel during the display process. Therefore, it is necessary to compensate for the brightness of the display panel. The brightness of the position where the brightness of the display panel is high is decreased, and the brightness of the position where the brightness of the display panel is low is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20
CPCG09G3/2074G09G2320/0233G09G2320/0271
Inventor 占慧兰
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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