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1. WO2018145347 - DISPLAY DRIVE CIRCUIT AND LIQUID CRYSTAL DISPLAY PANEL

Publication Number WO/2018/145347
Publication Date 16.08.2018
International Application No. PCT/CN2017/076772
International Filing Date 15.03.2017
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 2300/0814
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2300Aspects of the constitution of display devices
08Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
0809Several active elements per pixel in active matrix panels
0814used for selection purposes, e.g. logical AND for partial update
G09G 2310/0289
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310Command of the display device
02Addressing, scanning or driving the display screen or processing steps related thereto
0264Details of driving circuits
0289Details of voltage level shifters arranged for use in a driving circuit
G09G 2310/0297
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310Command of the display device
02Addressing, scanning or driving the display screen or processing steps related thereto
0264Details of driving circuits
0297Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
G09G 2310/08
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310Command of the display device
08Details of timing specific for flat panels, other than clock recovery
G09G 2330/025
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2330Aspects of power supply; Aspects of display protection and defect management
02Details of power systems and of start or stop of display operation
025Reduction of instantaneous peaks of current
G09G 3/3648
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
3648using an active matrix
Applicants
  • 武汉华星光电技术有限公司 WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 左清成 ZUO, Qingcheng
  • 李曼 LI, Man
  • 袁小玲 YUAN, Xiaoling
Agents
  • 深圳市德力知识产权代理事务所 COMIPS INTELLECTUAL PROPERTY OFFICE
Priority Data
201710067468.607.02.2017CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) DISPLAY DRIVE CIRCUIT AND LIQUID CRYSTAL DISPLAY PANEL
(FR) CIRCUIT DE COMMANDE D'AFFICHAGE ET PANNEAU D'AFFICHAGE À CRISTAUX LIQUIDES
(ZH) 显示驱动电路及液晶显示面板
Abstract
(EN)
A display drive circuit and a liquid crystal display panel. A first AND gate (AND1), a second AND gate (AND2), and a third AND gate (AND3) are added, and a shunt control signal and a regulating signal (BURR) are respectively connected into two input ends of each of the first AND gate (AND1), the second AND gate (AND2), and the third AND gate (AND3). The regulating signals (BURR) respectively perform high-low potential conversion multiple times and then keep a high potential during high potential durations corresponding to the shunt control signals to enable signals output by the output ends of the first AND gate (AND1), the second AND gate (AND2), and the third AND gate (AND3) to perform high-low potential conversion multiple times and then to keep a high potential, so that the on states of control TFTs respectively controlled by the signals output by the output ends of the first AND gate (AND1), the second AND gate (AND2), and the third AND gate (AND3) are different at a signal near end and at a signal far end, and the maximum current appearing time of sub-pixels is inconsistent at the signal near end and at the signal far end, thereby avoiding signal burrs caused by instant overload.
(FR)
L'invention porte sur un circuit de commande d'affichage et sur un panneau d'affichage à cristaux liquides. Une première porte ET (AND1), une deuxième porte ET (AND2) et une troisième porte ET (AND3) sont ajoutées et un signal de commande de dérivation et un signal de régulation (BURR) sont respectivement connectés à deux extrémités d'entrée de chacune de la première porte ET (AND1), de la deuxième porte ET (AND2) et de la troisième porte ET (AND3). Les signaux de régulation (BURR) effectuent respectivement de multiples fois une conversion de potentiel élevé-bas, puis gardent un potentiel élevé pendant des durées de potentiel élevé correspondant à des signaux de commande de dérivation afin de permettre à des signaux émis par les extrémités de sortie de la première porte ET (AND1), de la deuxième porte ET (AND2) et de la troisième porte ET (AND3) d'effectuer de multiples fois une conversion de potentiel élevé-bas, puis de garder un potentiel élevé de telle sorte que les états de marche des transistors TFT de commande, commandés respectivement par les signaux émis par les extrémités de sortie de la première porte ET (AND1), de la deuxième porte ET (AND2) et de la troisième porte ET (AND3), sont différents au niveau d'une extrémité proche du signal et au niveau d'une extrémité éloignée du signal, et de telle sorte que le temps d'apparition de courant maximal de sous-pixels est incohérent au niveau de l'extrémité proche du signal et au niveau de l'extrémité éloignée du signal, ce qui permet d'éviter des bavures de signal provoquées par une surcharge instantanée.
(ZH)
一种显示驱动电路及液晶显示面板,增设了第一与门(AND1)、第二与门(AND2)、和第三与门(AND3),三者各自的两输入端分别接入一分路控制信号与调节信号(BURR),调节信号(BURR)分别在对应各分路控制信号的高电位时长内先做数次高低电位转换再保持高电位,使得第一与门(AND1)、第二与门(AND2)、第三与门(AND3)的输出端输出的信号先做数次高低电位转换再保持高电位,从而使分别受第一与门(AND1)、第二与门(AND2)、第三与门(AND3)的输出端输出的信号控制的控制TFT在信号近端与信号远端的开启状态不同,各子像素在信号近端与信号远端出现最大电流的时间不一致,从而避免因瞬间负载过重形成的信号毛刺。
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