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1. WO2020133631 - DISPLAY PANEL AND OVERCURRENT PROTECTION METHOD THEREFOR, AND DISPLAY DEVICE

Publication Number WO/2020/133631
Publication Date 02.07.2020
International Application No. PCT/CN2019/073611
International Filing Date 29.01.2019
IPC
H02H 3/087 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
3Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
08responsive to excess current
087for dc applications
H02H 3/093 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
3Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
08responsive to excess current
093with timing means
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 2310/08
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 2330/12
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
12Test circuits or failure detection circuits included in a display system, as permanent part thereof
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 3/3677
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
3674Details of drivers for scan electrodes
3677suitable for active matrices only
H02H 3/087
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
3Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection
08responsive to excess current
087for dc applications
H02H 3/093
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
3Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection
08responsive to excess current
093with timing means
Applicants
  • 惠科股份有限公司 HKC CORPORATION LIMITED [CN]/[CN]
Inventors
  • 杨继东 YANG, Jidong
Agents
  • 深圳市百瑞专利商标事务所(普通合伙) SHENZHEN BAIRUI PATENT&TRADEMARK OFFICE
Priority Data
201811607037.527.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) DISPLAY PANEL AND OVERCURRENT PROTECTION METHOD THEREFOR, AND DISPLAY DEVICE
(FR) PANNEAU D’AFFICHAGE ET SON PROCÉDÉ DE PROTECTION CONTRE LES SURINTENSITÉS, ET DISPOSITIF D’AFFICHAGE
(ZH) 一种显示面板及其过流保护方法和显示装置
Abstract
(EN)
Disclosed in the present application are an overcurrent protection method, a display panel, and a display device. The overcurrent protection method comprises the steps: setting at least two different detection times for a level period of a drive current, and starting at least two corresponding overcurrent protection thresholds; respectively detecting at least two real-time currents for the at least two different detection times in one level period; and respectively comparing the real-time currents and the corresponding overcurrent protection thresholds, and if one or more of the real-time current values exceed the corresponding overcurrent protection thresholds, stopping outputting the drive current to start overcurrent protection.
(FR)
La présente invention concerne un procédé de protection contre les surintensités, un panneau d’affichage, et un dispositif d’affichage. Les étapes du procédé de protection contre les surintensités consistent : à régler au moins deux temps de détection différents pour une période de niveau d’un courant d’attaque, et à démarrer au moins deux seuils de protection contre les surintensités correspondants ; à détecter respectivement au moins deux courants en temps réel pour les au moins deux temps de détection différents dans une période de niveau ; et à comparer respectivement les courants en temps réel et les seuils de protection contre les surintensités correspondants, et si une ou plusieurs des valeurs de courants en temps réel dépassent les seuils de protection contre les surintensités correspondants, à arrêter d’émettre le courant d’attaque pour démarrer la protection contre les surintensités.
(ZH)
本申请公开了一种过流保护方法及显示面板和显示装置,所述过流保护方法,包括步骤:为驱动电流的电平周期,设置至少两个不同的侦测时间,启动至少两组对应的过电流保护阈值;在一个电平周期内,针对至少两个不同侦测时间分别检测至少两个实时电流;以及分别对比实时电流和对应的过电流保护阈值,若其中有一个或一个以上的实时电流值超过对应的过电流保护阈值,停止输出驱动电流,以启动过流保护。
Also published as
Latest bibliographic data on file with the International Bureau