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1. WO2020107528 - DETECTION CIRCUIT AND SCAN DRIVING CIRCUIT

Publication Number WO/2020/107528
Publication Date 04.06.2020
International Application No. PCT/CN2018/120271
International Filing Date 11.12.2018
IPC
G09G 3/00 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
CPC
G01R 31/50
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
G09G 3/006
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
006Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Applicants
  • 惠科股份有限公司 HKC CORPORATION LIMITED [CN]/[CN]
Inventors
  • 熊志 XIONG, Zhi
Agents
  • 广州华进联合专利商标代理有限公司 ADVANCE CHINA IP LAW OFFICE
Priority Data
201811443274.229.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) DETECTION CIRCUIT AND SCAN DRIVING CIRCUIT
(FR) CIRCUIT DE DÉTECTION ET CIRCUIT DE COMMANDE DE BALAYAGE
(ZH) 检测电路和扫描驱动电路
Abstract
(EN)
A detection circuit and a scan driving circuit. The detection circuit comprises a comparing unit (100) and a determining unit (200). The comparing unit (100) is used for receiving a low voltage level signal and a scan output signal output by the n-th stage damper (D4) and generating a first intermediate signal according to the scan output signal and the low voltage level signal. The determining unit (200) is used for receiving the first intermediate signal and a scan input signal of the n-th stage damper (D4) output by the input end of the n-th stage damper (D4) of a scanning chip, generating a control signal according to the first intermediate signal and the scan input signal and outputting the control signal to the scanning chip, so as to control, when short circuit occurs, the scanning chip to disconnect output.
(FR)
L'invention concerne un circuit de détection et un circuit de commande de balayage. Le circuit de détection comprend une unité de comparaison (100) et une unité de détermination (200). L'unité de comparaison (100) permet de recevoir un signal de niveau basse tension et un signal de sortie de balayage émis par l'amortisseur de nième étage (D4) et de générer un premier signal intermédiaire en fonction du signal de sortie de balayage et du signal de niveau basse tension. L'unité de détermination (200) permet de recevoir le premier signal intermédiaire et un signal d'entrée de balayage de l'amortisseur de nième étage (D4) émis par l'extrémité d'entrée de l'amortisseur de nième étage (D4) d'une puce de balayage, de générer un signal de commande en fonction du premier signal intermédiaire et du signal d'entrée de balayage et d'envoyer le signal de commande à la puce de balayage, de manière à commander, lorsqu'un court-circuit se produit, la puce de balayage pour déconnecter la sortie.
(ZH)
一种检测电路和扫描驱动电路,检测电路包括比较单元(100)和判断单元(200)。比较单元(100)用于接收低电平电压信号和第n级缓冲器(D4)输出的扫描输出信号,并根据扫描输出信号和低电平电压信号生成第一中间信号。判断单元(200)用于接收第一中间信号,以及扫描芯片第n级缓冲器(D4)的输入端输出的第n级缓冲器(D4)的扫描输入信号,根据第一中间信号和扫描输入信号生成控制信号,并输出给扫描芯片,以控制扫描芯片在发生短路时关断输出。
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