GB2614817A8 - Test circuit of display panel and display device - Google Patents

Test circuit of display panel and display device Download PDF

Info

Publication number
GB2614817A8
GB2614817A8 GB2219817.0A GB202219817A GB2614817A8 GB 2614817 A8 GB2614817 A8 GB 2614817A8 GB 202219817 A GB202219817 A GB 202219817A GB 2614817 A8 GB2614817 A8 GB 2614817A8
Authority
GB
United Kingdom
Prior art keywords
level signal
display panel
test
line
display device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB2219817.0A
Other versions
GB2614817A (en
GB202219817D0 (en
GB2614817B (en
Inventor
Yang Shiwei
Xu Yizhen
Wang Limiao
Ren Chunhui
Tang Rong
Zhao Congcong
Zheng Haoxuan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HKC Co Ltd
Original Assignee
HKC Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202111194931.6A external-priority patent/CN113643636B/en
Application filed by HKC Co Ltd filed Critical HKC Co Ltd
Publication of GB202219817D0 publication Critical patent/GB202219817D0/en
Publication of GB2614817A publication Critical patent/GB2614817A/en
Publication of GB2614817A8 publication Critical patent/GB2614817A8/en
Application granted granted Critical
Publication of GB2614817B publication Critical patent/GB2614817B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices 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 for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1306—Details
    • G02F1/1309—Repairing; Testing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Control Of El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

A test circuit (100) of a display panel (10) and a display device (200); a first active switch (130) controls the connection and disconnection of a test signal line (113), a low level signal test line, and a high level signal test line; the high level signal test line is also connected to a control end of each first active switch (130); when a protection circuit (140) operates normally on the display panel (10), receiving a low-level signal output control signal on a low level signal line controlling a first active switch (130) to disconnect.
GB2219817.0A 2021-10-14 2021-12-31 Test circuit of display panel and display device Active GB2614817B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111194931.6A CN113643636B (en) 2021-10-14 2021-10-14 Test circuit of display panel and display device
PCT/CN2021/143537 WO2023060780A1 (en) 2021-10-14 2021-12-31 Test circuit of display panel and display device

Publications (4)

Publication Number Publication Date
GB202219817D0 GB202219817D0 (en) 2023-02-15
GB2614817A GB2614817A (en) 2023-07-19
GB2614817A8 true GB2614817A8 (en) 2023-07-26
GB2614817B GB2614817B (en) 2024-02-14

Family

ID=86895735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2219817.0A Active GB2614817B (en) 2021-10-14 2021-12-31 Test circuit of display panel and display device

Country Status (1)

Country Link
GB (1) GB2614817B (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005266529A (en) * 2004-03-19 2005-09-29 Sharp Corp Manufacturing method of display device, and the display device
JP4869807B2 (en) * 2006-06-30 2012-02-08 株式会社 日立ディスプレイズ Display device
KR101305379B1 (en) * 2009-07-21 2013-09-06 엘지디스플레이 주식회사 Chip on glass type liquid crystal display device and inspecting method for the same
CN105976745B (en) * 2016-07-21 2018-11-23 武汉华星光电技术有限公司 Array substrate tests circuit, display panel and flat display apparatus
CN109697938B (en) * 2019-01-24 2021-11-30 京东方科技集团股份有限公司 Display panel, preparation method, detection method and display device
CN110992861B (en) * 2019-12-31 2023-05-05 武汉天马微电子有限公司 Display panel and display device
CN113643636B (en) * 2021-10-14 2022-01-07 惠科股份有限公司 Test circuit of display panel and display device

Also Published As

Publication number Publication date
GB2614817A (en) 2023-07-19
GB202219817D0 (en) 2023-02-15
GB2614817B (en) 2024-02-14

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