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1. WO2020140786 - BACKLIGHT SOURCE AND DISPLAY DEVICE

Publication Number WO/2020/140786
Publication Date 09.07.2020
International Application No. PCT/CN2019/127441
International Filing Date 23.12.2019
IPC
G09G 3/34 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
CPC
G02F 1/133603
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
1333Constructional arrangements; ; Manufacturing methods
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
1336Illuminating devices
133602Direct backlight
133603with LEDs
G02F 1/133612
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
1333Constructional arrangements; ; Manufacturing methods
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
1336Illuminating devices
133602Direct backlight
133612Electrical details
G02F 1/133613
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
1333Constructional arrangements; ; Manufacturing methods
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
1336Illuminating devices
133602Direct backlight
133613characterized by the sequence of light sources
G02F 2201/50
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
2201Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
50Protective arrangements
G09G 2330/00
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
G09G 3/32
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
22using controlled light sources
30using electroluminescent panels
32semiconductive, e.g. using light-emitting diodes [LED]
Applicants
  • 京东方科技集团股份有限公司 BOE TECHNOLOGY GROUP CO., LTD. [CN]/[CN]
  • 北京京东方光电科技有限公司 BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 孙宾华 SUN, Binhua
  • 郭子强 GUO, Ziqiang
  • 孙剑 SUN, Jian
  • 訾峰 ZI, Feng
  • 王亚坤 WANG, Yakun
Agents
  • 北京天昊联合知识产权代理有限公司 TEE&HOWE INTELLECTUAL PROPERTY ATTORNEYS
Priority Data
201920002867.902.01.2019CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) BACKLIGHT SOURCE AND DISPLAY DEVICE
(FR) SOURCE DE RÉTROÉCLAIRAGE ET DISPOSITIF D'AFFICHAGE
(ZH) 背光源及显示装置
Abstract
(EN)
Disclosed are a backlight source comprising a backlight drive circuit and a display device. The backlight drive circuit comprises: a plurality of first signal lines (1) and a plurality of second signal lines (2), wherein the plurality of first signal lines (1) and the plurality of second signal lines (2) are arranged in an intersecting manner to define a plurality of light string areas; some of the light string areas are used for arranging light-emitting diode (LED) light strings; first ends of the light-emitting diode (LED) light strings located in the same row are connected together by means of the same first signal line (1); and second ends of the light-emitting diode (LED) light strings located in the same column are connected together by means of the same second signal line (2). The backlight drive circuit further comprises at least one switch unit, wherein the switch unit is arranged in the remaining string areas, apart from the light string areas for arranging the light-emitting diode (LED) light strings, and is connected between the first signal line (1) and the second signal line (2), and is configured to output a voltage signal to the second signal line (2) connected thereto under the control of the first signal line (1) connected thereto.
(FR)
La présente invention concerne une source de rétroéclairage comprenant un circuit d'attaque de rétroéclairage et un dispositif d'affichage. Le circuit d'attaque de rétroéclairage comprend : une pluralité de premières lignes de signal (1) et une pluralité de secondes lignes de signal (2), la pluralité de premières lignes de signal (1) et la pluralité de secondes lignes de signal (2) se croisant pour délimiter une pluralité de zones de chapelet lumineux ; certaines des zones de chapelet lumineux étant utilisées pour agencer des chapelets lumineux de diodes électroluminescentes (DEL) ; les premières extrémités des chapelets lumineux de diodes électroluminescentes (DEL) situées dans la même rangée sont connectées ensemble par la même première ligne de signal (1) ; et les secondes extrémités des chapelets lumineux de diodes électroluminescentes (DEL) situées dans la même colonne sont connectées ensemble par la même seconde ligne de signal (2). Le circuit d'attaque de rétroéclairage comprend en outre au moins une unité de commutation, l'unité de commutation étant agencée dans les zones de chapelets restantes, espacées des zones de chapelets lumineux pour agencer les chapelets lumineux de diodes électroluminescentes (DEL) et est connectée entre la première ligne de signal (1) et la seconde ligne de signal (2) et est conçue pour délivrer un signal de tension à la seconde ligne de signal (2) connectée à celle-ci sous la commande de la première ligne de signal (1) connectée à celle-ci.
(ZH)
一种包括背光驱动电路的背光源及显示装置。背光驱动电路包括:多条第一信号线(1)和多条第二信号线(2),多条第一信号线(1)和多条第二信号线(2)交叉设置限定出多个灯串区,部分灯串区用以设置发光二极管灯串(LED);其中,位于同一行的发光二极管灯串(LED)的第一端通过同一条第一信号线(1)连接在一起;位于同一列的发光二极管灯串(LED)的第二端通过同一条第二信号线(2)连接在一起;背光驱动电路还包括至少一个开关单元,开关单元布置在用以设置发光二极管灯串(LED)的部分灯串区以外的剩余灯串区中且连接在第一信号线(1)和第二信号线(2)之间;并且被配置为在与之连接的第一信号线(1)的控制下向与之连接的第二信号线(2)输出电压信号。
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