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1. CN111812874 - Method and device for adjusting dark state visual angle of display panel

Office
China
Application Number 202010627774.2
Application Date 02.07.2020
Publication Number 111812874
Publication Date 23.10.2020
Grant Number 111812874
Grant Date 06.07.2021
Publication Kind B
IPC
G02F 1/133
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
G09G 3/36
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
G02F 1/13306
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
13306Circuit arrangements or driving methods for the control of single liquid crystal cells
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 2320/0626
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
0626for control of overall brightness
Applicants SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
深圳市华星光电半导体显示技术有限公司
Inventors HAI BO
海博
Agents 深圳紫藤知识产权代理有限公司 44570
Title
(EN) Method and device for adjusting dark state visual angle of display panel
(ZH) 显示面板的暗态视角的调整方法及其装置
Abstract
(EN) The invention provides a method and a device for adjusting a dark state visual angle of a display panel. The method comprises the following steps: acquiring a first brightness change value of a to-be-tested panel under a first voltage difference; obtaining a second brightness change value of the to-be-tested panel under the first voltage difference; obtaining a ratio of the second brightness change value to the first brightness change value; and comparing the ratio of the second brightness change value to the first brightness change value with a first threshold to judge whether the first voltage difference is the selection voltage of the display panel or not. The dark state brightness of the to-be-measured panel at each visual angle is measured to obtain brightness change values corresponding to different voltage differences, when the brightness change value meets the requirements of customers, the voltage difference is the selection voltage of the product, and when the brightness change value does not meet the requirements of customers, the voltage difference is the non-selection voltage of the product. Within the range of the selection voltage, the technical problem that an existing liquid crystal display panel leaks light under a dark state and a large viewing angle is solved, and the display quality of a display is improved.
(ZH) 本申请提出了一种显示面板的暗态视角的调整方法及其装置,该方法包括:获取待测面板在第一电压差下的第一亮度变化值;获取待测面板在第一电压差下的第二亮度变化值;获取第二亮度变化值与第一亮度变化值的比值;将第二亮度变化值与第一亮度变化值的比值与第一阈值进行对比,以判定第一电压差是否为显示面板的选择电压。本申请通过对待测面板各视角下的暗态亮度进行测量,以获取不同电压差对应的亮度变化值,当该亮度变化值符合客户要求时,该电压差为产品的选择电压,当该亮度变化值不符合客户要求时,该电压差为产品的非选择电压,在该选择电压的范围内,解决了现有液晶显示面板在暗态大视角下漏光的技术问题,提升了显示器的显示品质。
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