Method and device for determining driving voltages

A technique for determining a driving voltage and a method for determining it, applied in the field of a method and device for determining a driving voltage, capable of solving problems such as afterimages in liquid crystal displays

Active Publication Date: 2013-09-11
BOE TECH GRP CO LTD +1
View PDF8 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for determining a dri

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
  • Method and device for determining driving voltages
  • Method and device for determining driving voltages
  • Method and device for determining driving voltages

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Embodiments of the present invention provide a method and device for determining a driving voltage. When setting the driving high voltage and driving low voltage of a TFT-LCD, for each gray scale, first determine a The average value of the driving high voltage and driving low voltage of the gray scale, and then according to the determined average value of the driving high voltage and driving low voltage of the gray scale, the relationship curve between the driving voltage of the source driver integrated circuit and the light transmittance of the TFT-LCD, and the TFT -LCD gamma curve, to set the TFT-LCD drive high voltage and drive low voltage, because the average value of the drive high voltage and drive low voltage is determined according to the TFT-LCD pixel electrode jump voltage, not because the pixel electrode jump voltage is different from The difference between the average value of the gray-scale driving high voltage and driving low voltage and the reference volta...

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

An embodiment of the invention provides a method and a device for determining driving voltages. The method includes determining an average value of a driving high voltage and a driving low voltage of each gray level according to a TFT-LCD (thin film transistor-liquid crystal display) pixel electrode jumping voltage of the gray level when a driving high voltage and a driving low voltage of a TFT-LCD are set; setting the driving high voltage and the driving low voltage of the TFT-LCD according to a relation curve of the average value of each gray level, a driving voltage of a source driving integrated circuit and the light transmittance of the TFT-LCD and a gamma curve of the TFT-LCD. The method and the device have the advantages that as an average value of the driving high voltage and the driving low voltage is determined according to the TFT-LCD pixel electrode jumping voltages, a phenomenon that driving voltages are asymmetrical due to the fact that a corresponding pixel electrode jumping voltage is different from the difference between an average value of a driving high voltage and a driving low voltage of each gray level and a reference voltage Vcom of an existing TFT-LCD is prevented, and the problem of residual images due to deviation of the pixel electrode jumping voltages of the existing TFT-LCD is solved.

Description

technical field [0001] The invention relates to liquid crystal display technology, in particular to a method and device for determining a driving voltage. Background technique [0002] Afterimage is considered to be one of the biggest problems in the production process engineering of Thin Film Transistor-Liquid Crystal Display (TFT-LCD), and afterimage is divided into DC / AC (Alternating Current, AC) afterimage. It is the afterimage caused by the asymmetry of the driving voltage of TFT-LCD that causes the metal and non-metal particles dissociated in the liquid crystal layer to tend to the electric field side, and the particles cannot return to the dissociated state under the condition of no voltage, resulting in different brightness. [0003] The driving voltage of each gray scale of TFT-LCD includes driving high voltage and driving low voltage. Generally, the driving voltage of TFT-LCD is based on figure 1 The relationship curve between the driving voltage of the source dri...

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): G09G3/36
CPCG09G3/3696G09G2320/0204G09G2320/0257G09G2320/0276G09G2320/0673
Inventor 苏丹
Owner BOE TECH GRP 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