Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020107659 - LIQUID CRYSTAL PANEL DRIVING METHOD

Publication Number WO/2020/107659
Publication Date 04.06.2020
International Application No. PCT/CN2019/070907
International Filing Date 08.01.2019
IPC
G09G 3/36 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
34by control of light from an independent source
36using liquid crystals
CPC
G09G 2320/0673
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320Control of display operating conditions
06Adjustment of display parameters
0673for control of gamma adjustment, e.g. selecting another gamma curve
G09G 3/3607
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
36using liquid crystals
3607for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
G09G 3/3696
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
36using liquid crystals
3611Control of matrices with row and column drivers
3696Generation of voltages supplied to electrode drivers
Applicants
  • 深圳市华星光电半导体显示技术有限公司 SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 何涛 HE, Tao
  • 吴宇 WU, Yu
Agents
  • 深圳市德力知识产权代理事务所 COMIPS INTELLECTUAL PROPERTY OFFICE
Priority Data
201811447010.429.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) LIQUID CRYSTAL PANEL DRIVING METHOD
(FR) PROCÉDÉ DE COMMANDE D'UN PANNEAU À CRISTAUX LIQUIDES
(ZH) 液晶面板驱动方法
Abstract
(EN)
A liquid crystal panel driving method. The method comprises: when |Xn-Xn+1|<=Z, outputting a voltage value corresponding to the gray scale of a next frame picture into a liquid crystal panel; and when Z<|Xn-Xn+1|<=W, according to the calculation formula of an over drive transition value, i.e., OD_t=ra*OD(Xn, Xn+1)+(1-ra)*Vn+1, outputting the over drive transition value of the gray scale of the current frame picture corresponding to the gray scale of the next frame picture into the liquid crystal panel; and when |Xn-Xn+1|>W, outputting the over drive value of the gray scale of the current frame picture corresponding to the gray scale of the next frame picture into the liquid crystal panel. The present invention can avoid generating a tomographic image when the gray scale of the current frame picture jumps to that of the next frame picture, thereby avoiding abnormal display on a panel screen.
(FR)
L'invention concerne un procédé de commande d'un panneau à cristaux liquides. Le procédé comprend les étapes suivantes : lorsque |Xn-Xn+1|<=Z, délivrer une valeur de tension correspondant à l'échelle de gris d'une image de trame suivante dans un panneau à cristaux liquides ; et lorsque Z<|Xn-Xn+1|<=W, selon la formule de calcul d'une valeur de transition de surexcitation, c'est-à-dire OD_t=ra*OD(Xn, Xn+1)+(1-ra)*Vn+1, délivrer en sortie la valeur de transition de pilotage de l'échelle de gris de l'image de trame courante correspondant à l'échelle de gris de l'image de trame suivante dans le panneau à cristaux liquides; et lorsque |Xn-Xn+1|>W, délivrer en sortie la valeur de surexcitation de l'échelle de gris de l'image de trame courante correspondant à l'échelle de gris de l'image de trame suivante dans le panneau à cristaux liquides. La présente invention peut éviter de générer une image tomographique lorsque l'échelle de gris de l'image de trame courante saute à celle de l'image de trame suivante, ce qui permet d'éviter un affichage anormal sur un écran de panneau.
(ZH)
一种液晶面板驱动方法。通过在|X n-X n+1|<=Z时,输出下一帧画面的灰阶对应的电压值到液晶面板;在Z<|X n-X n+1|<=W时,根据过压驱动过渡值的计算公式:OD_t=ra*OD(X n,X n+1)+(1-ra)*V n+1输出当前帧画面的灰阶与下一帧画面的灰阶对应的过压驱动过渡值到液晶面板,在|X n-X n+1|>W时,输出当前帧画面的灰阶与下一帧画面的灰阶对应的过压驱动值到液晶面板,可以避免当前帧画面的灰阶跳变到下一帧画面的灰阶时出现断层,从而避免面板画面显示异常。
Also published as
Latest bibliographic data on file with the International Bureau