Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Driving method of display panel and display device

A display panel and driving method technology, applied to static indicators, instruments, etc., can solve the problems of low grayscale display accuracy, large differences, and difficult precise control of pulse width, and achieve the effect of improving display accuracy

Active Publication Date: 2019-11-19
SHANGHAI AVIC OPTOELECTRONICS
View PDF12 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the brightness corresponding to the highest gray scale and the lowest gray scale is quite different, the corresponding pulse width is also quite different. Taking gray scale 1 and gray scale 255 as an example, the brightness corresponding to gray scale 1 is gray scale 255. The corresponding brightness is 1 / 200,000. Correspondingly, the pulse width corresponding to 1 gray scale is also 1 / 200,000 of the pulse width corresponding to 255 gray scales. However, based on the current technology, it is difficult to adjust the pulse width. Precise control of 1 / 200,000, resulting in low grayscale display accuracy

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
  • Driving method of display panel and display device
  • Driving method of display panel and display device
  • Driving method of display panel and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0066] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0067] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0068] It should be understood that the term "an...

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 embodiment of the invention provides a driving method of a display panel and a display device, and relates to the technical field of display, capable of improving the display precision of a low gray scale. The driving method comprises the steps: dividing a frame period of the display panel into N sub-frames, and setting the light emitting duration Ti of each sub-frame, wherein N is a positiveinteger larger than 1, and i is equal to 1-N; according to the target display brightness value L, determining the number k of subframes needing to drive the sub-pixels to emit light, wherein when k issmaller than N, the light emitting duration of any subframe in the k subframes is smaller than the light emitting duration of any subframe in the subframes not needing to drive the sub-pixels to emitlight; according to the target display brightness value L, obtaining a light-emitting brightness value Lemit of a sub-pixel in each sub-frame in the k sub-frames; and in the k sub-frames, driving thesub-pixels to emit light, wherein the light emitting brightness value is Lemit.

Description

【Technical field】 [0001] The present invention relates to the field of display technology, in particular to a method for driving a display panel and a display device. 【Background technique】 [0002] In the prior art, pulse width modulation (Pluse Width Modulation, PWM for short) is usually used to drive the sub-pixels to emit light. Specifically, the width of the pulse can be divided into multiple levels. By adjusting the width of the pulse, the sub-pixels can be driven to emit light with different brightness, and then different gray scales can be displayed. However, since the brightness corresponding to the highest gray scale and the lowest gray scale is quite different, the corresponding pulse width is also quite different. Taking gray scale 1 and gray scale 255 as an example, the brightness corresponding to gray scale 1 is gray scale 255. The corresponding brightness is 1 / 200,000. Correspondingly, the pulse width corresponding to 1 gray scale is also 1 / 200,000 of the pul...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G3/2022G09G2300/0819G09G2310/0216G09G2360/16G09G3/2074G09G2310/027G09G2310/0286G09G2320/0233G09G2320/0626
Inventor 翟应腾吴天一
Owner SHANGHAI AVIC OPTOELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products