Gamma correction method and device of display panel

A gamma correction and display panel technology, applied to static indicators, instruments, etc., can solve the problem of large storage space

Inactive Publication Date: 2021-07-06
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two problems in the method of using the white balance tracking table. On the one hand, the white balance tracking table includes the RGB grayscale parameters of each frequency. For example, an 8bit display panel needs to set 256*3=768 grayscales at each frequency. Level parameters, a 10bit display panel needs to set 1024*3=3072 grayscale parameters at each frequency, so the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gamma correction method and device of display panel
  • Gamma correction method and device of display panel
  • Gamma correction method and device of display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] 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.

[0031] The gamma correction curve is also called the gray scale-brightness curve. At present, the display panel adopts the same gamma correction curve at different refresh rates, so the brightness corresponding to the same gray scale in the same gamma correction curve at different refresh rates is the same. Using the same data voltage to drive the display image corresponding to the low refresh rate and the display frame image corresponding to the high refresh rate, the actual dis...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a gamma correction method and device of a display panel, and the method and device receive an image signal of a front end, detect the refresh frequency of the image signal in real time, and then call different gamma correction curves according to whether the refresh frequency of the image signal exceeds a preset refresh frequency or not, calls the gamma correction curve with higher brightness at the low refresh frequency, so that the gamma correction curve with higher brightness can be used for compensating certain brightness when the electric leakage is higher and the display brightness is reduced at the low refresh frequency of the display panel. Because the number of the target gray scales of each gamma correction curve is small, the number of data voltages corresponding to each group of target gray scales is small, so that when the display panel is switched from a high refresh frequency to a low refresh frequency, the display brightness of the display panel can be quickly adjusted, the display brightness of the display panel can be kept unchanged, the flicker phenomenon is avoided, and the storage space of the register is saved.

Description

technical field [0001] The present application relates to the field of display technology, and in particular to a gamma correction method and device for a display panel. Background technique [0002] Variable refresh rate VRR is an important function of the display panel. The VRR mode can make the display panel freely switch between high refresh rate and low refresh rate without causing screen tearing. However, some display panels switch from high refresh rate through VRR mode. When the refresh rate is low, the figure 1 A schematic diagram of the charging time and field blanking time included in each frame of image in the prior art, such as figure 1 As shown, when the charging time of each frame of image is the same, the field blanking time (also called blank time or blank time) of the high refresh rate is longer than that of the low refresh rate, that is, the time for the picture to be maintained at the low refresh rate is prolonged, which means This will increase the lea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G09G3/20
CPCG09G3/2007G09G2320/0276G09G3/2003G09G5/02G09G2320/0673G09G2320/0247G09G2340/0435G09G3/20G09G2300/0861G09G2310/027G09G2310/061G09G2320/0653
Inventor 张云
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap