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: 2021-07-13
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • 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
  • 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 in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

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

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Abstract

The invention provides a display device and a driving method thereof. The display device driving method comprises the steps of firstly obtaining a first driving parameter and a first compensation value of the display device, and then determining an abnormal driving parameter of the display device according to the first driving parameter and the first compensation value of the display device; determining a second compensation value of the display device according to the abnormal driving parameter of the display device; driving the display device by using the second compensation value and the first driving parameter. According to the invention, when the compensation effect of the display panel is poor, the compensation value of the display panel is modified, the first compensation value is modified into the second compensation value; due to the fact that the second compensation value is smaller than the first compensation value, excessive compensation of the display panel is avoided, purple points in the display panel are eliminated, and poor display of the display panel is avoided.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a display device and a driving method thereof. Background technique [0002] In order to achieve different display brightnesses, 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. DC dimming Light mode is widely used due to the absence of screen flicker. [0003] For the current display panel, due to the difference in process stability, the brightness of some areas of the display panel cannot reach the ideal state, resulting in uneven brightness (mura) of the display panel during the display process, so it is necessary to compensate the brightness of the display panel. The luminance of the position where the luminance of the display panel is higher is reduced, and the luminance of the position of the display panel is increased to achieve uniformity of...

Claims

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Application Information

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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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