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1. WO2018120364 - DISPLAY PANEL DRIVING DEVICE AND DRIVING METHOD

Publication Number WO/2018/120364
Publication Date 05.07.2018
International Application No. PCT/CN2017/073590
International Filing Date 15.02.2017
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 2310/0251
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
0243Details of the generation of driving signals
0251Precharge or discharge of pixel before applying new pixel voltage
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 2320/0233
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
02Improving the quality of display appearance
0233Improving the luminance or brightness uniformity across the screen
G09G 3/36
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
G09G 3/3611
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
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
  • 深圳市华星光电技术有限公司 SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 吴宇 WU, Yu
  • 王磊 WANG, Lei
Agents
  • 深圳市威世博知识产权代理事务所(普通合伙) CHINA WISPRO INTELLECTUAL PROPERTY LLP.
Priority Data
201611236662.428.12.2016CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) DISPLAY PANEL DRIVING DEVICE AND DRIVING METHOD
(FR) DISPOSITIF DE COMMANDE DE PANNEAU D'AFFICHAGE ET PROCÉDÉ DE COMMANDE
(ZH) 一种显示面板的驱动装置及驱动方法
Abstract
(EN)
A display panel driving device (100) and a driving method are provided. The driving device (100) comprises: a timing control circuit (10), for receiving a current data frame, analyzing the current data frame to obtain a frame enabling signal (STV1) to be output, and generating a pre-charging electrical signal (ST1) and a scan clock pulse signal (CKV1) according to the frame enabling signal (STV1), wherein the pre-charging electrical signal (ST1) is output before the scan clock pulse signal (CKV1); and a data line driving circuit (11), controlled by the pre-charging electrical signal (ST1) to output a first charging voltage signal (V1) to each data line to pre-charge a parasitic capacitor of each data line and then to output a second voltage signal (V2) to each data line to charge, under the control of the scan clock pulse signal (CKV1), each pixel line by line. The driving device and method of the invention can alleviate the problem in which parasitic capacitors of data lines cause brightness of pixels of a display panel to be uneven.
(FR)
L'invention concerne un dispositif de commande (100) de panneau d'affichage et un procédé de commande. Le dispositif de commande (100) comprend : un circuit de commande de temporisation (10), permettant de recevoir une trame de données en cours, d'analyser la trame de données en cours afin d'obtenir un signal d'activation de trame (STV1) à émettre et de générer un signal électrique de précharge (ST1) et un signal d'impulsion d'horloge de balayage (CKV1) en fonction du signal d'activation de trame (STV1), le signal électrique de précharge (ST1) étant émis avant le signal d'impulsion d'horloge de balayage (CKV1) ; et un circuit de commande de ligne de données (11), commandé par le signal électrique de précharge (ST1) permettant d'émettre en sortie un premier signal de tension de charge (V1) vers chaque ligne de données afin de précharger un condensateur parasite de chaque ligne de données, puis d'émettre en sortie un second signal de tension (V2) vers chaque ligne de données afin de charger, sous la commande du signal d'impulsion d'horloge de balayage (CKV1), chaque pixel ligne par ligne. Le dispositif de commande et le procédé de l'invention permettant d'atténuer le problème selon lequel des condensateurs parasites de lignes de données provoquent une irrégularité de luminosité des pixels d'un panneau d'affichage.
(ZH)
一种显示面板的驱动装置(100)及驱动方法。该驱动装置(100)包括:时序控制电路(10),用于接收当前数据帧并解析当前数据帧以获得待输出的帧开启信号(STV1),根据帧开启信号(STV1)产生预充电信号(ST1)和扫描时钟脉冲信号(CKV1),其中,预充电信号(ST1)先于扫描时钟脉冲信号(CKV1)输出;数据线驱动电路(11),用于在预充电信号(ST1)的控制下将第一充电电压信号(V1)输出至各数据线以对各数据线的寄生电容进行预充电后,将第二充电电压信号(V2)输出至各数据线以在扫描时钟脉冲信号(CKV1)的控制下逐行对各像素点进行充电。通过上述方式,能够改善由于数据线存在寄生电容而导致显示面板中像素点亮度不均的问题。
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