WO2020093606A1 - Structure de détection de panneau d'affichage et dispositif d'affichage - Google Patents

Structure de détection de panneau d'affichage et dispositif d'affichage Download PDF

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Publication number
WO2020093606A1
WO2020093606A1 PCT/CN2019/073194 CN2019073194W WO2020093606A1 WO 2020093606 A1 WO2020093606 A1 WO 2020093606A1 CN 2019073194 W CN2019073194 W CN 2019073194W WO 2020093606 A1 WO2020093606 A1 WO 2020093606A1
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WO
WIPO (PCT)
Prior art keywords
positive polarity
polarity switch
display area
gate voltage
signal
Prior art date
Application number
PCT/CN2019/073194
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English (en)
Chinese (zh)
Inventor
黄笑宇
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惠科股份有限公司
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Publication of WO2020093606A1 publication Critical patent/WO2020093606A1/fr

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    • 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

Definitions

  • the present application relates to the display field, and in particular to a detection structure and a display device of a display panel.
  • Thin-film transistor liquid crystal display (Thin Film Transistor Liquid Crystal, TFT-LCD) is one of the main varieties of flat panel displays, and has become an important display platform in modern IT and video products.
  • Thin film transistor liquid crystal display (Thin Film Transistor Liquid Crystal, TFT-LCD) main driving principle, the system board passes red (R), green (G), blue (B) compressed signals, control signals and power through the wire and printed circuit board (Printed circuit board, PCB) electronic connector (connector) is connected, the data is processed by the driver chip (Timing Controller IC, TCON IC) on the printed circuit board (Printed circuit board, PCB), and then processed by the printed circuit board ( Printed circuit board (PCB), connected to the display area through the source die soft film package (Source-Chip on Film, S-COF) and the gate die soft film package (Gate-Chip on Film, G-COF), So that the liquid crystal display (Liquid Crystal Display, LCD) to obtain the required power and signal.
  • the gate side fan-out block is used to fit the printed circuit board (PCB) and the source-chip soft film package (Source-Chip Film, S-COF) and Before the gate die soft film package (Gate-Chip on Film, G-COF), the image quality inspection of the panel is performed, and the gate (Gate) side is provided with red (R), green (G), and blue (B) Three signal buses, where channel N (Channel) is connected to red (R), channel N + 1 (Channel N + 1) is connected to green (G), and channel N + 2 (Channel N + 2) and blue (B) Connect and reciprocate in turn.
  • PCB printed circuit board
  • S-COF Source-chip soft film package
  • Gate-Chip on Film, G-COF the image quality inspection of the panel is performed, and the gate (Gate) side is provided with red (R), green (G), and blue (B) Three signal buses, where channel N (Channel) is connected to red (R), channel N + 1 (Channel N + 1) is
  • Pad N (Pad N), Pad N + 1 (Pad N + 1), Pad N + 2 (Pad N + 2) are gate die soft film packages (Gate-Chip on Film, G-COF) Corresponding bonding pads during actual bonding.
  • the gate die soft film package (Gate-Chip Film, G-COF) is not bonded, the signal can be externally injected to the LCD panel through the three bus lines of red (R), green (G), and blue (B). Perform screen detection. After the picture detection is completed, the laser is cut off through the external filling line to avoid the gate die soft film package (Gate-Chip on Film, G-COF) bonding, red (R) / green (G) / blue (B) The influence of the bus on the display.
  • the present application provides an additional structure based on the traditional design with only signal transmission traces to achieve the effects of electrostatic discharge (ESD) protection and selective refresh.
  • ESD electrostatic discharge
  • the display panel includes a printed circuit board and a display area
  • the detection structure includes: a laser block; A plurality of signal channels are provided in the display area, and each of the signal channels is electrically connected to a ground loop (GND), a positive polarity switch, a diode, and a gasket; and a light source (RGB) signal bus is formed with the signal channel Vertical state; wherein, the plurality of signal channels are sequentially and electrically connected to the red (R) signal line, the green (G) signal line, and the blue (B) signal line in sequence, respectively, through the printed circuit
  • the board is powered to perform the screen detection of the display area. After the screen detection of the display area is completed, the multiple signal channels are laser cut off by the laser at the laser block.
  • the ground loop (GND) is electrically connected to a large resistance resistor to prevent the ground loop (GND) and the gate voltage (VGH) from generating a large current.
  • the value of the large resistance (R) is ⁇ 100K ⁇ .
  • the positive polarity switch when the gate voltage (VGH) is high (H), the positive polarity switch is turned on.
  • the positive polarity switch when the gate voltage (VGH) is low (L), the positive polarity switch is turned off.
  • the gate voltage (VGH) is powered by the printed circuit board, and when the ground loop (GND) is 0V, the gate voltage (VGH) is low (L).
  • the diode is unidirectionally conductive.
  • the gate voltage (VGH) and the ground loop (GND) of the positive polarity switch are 0 at this time, that is, the gate voltage is low ( L).
  • the positive polarity switch when the laser block is cut, the positive polarity switch is closed, and the signal channel is disconnected from the corresponding ground loop, positive polarity switch, and diode and the gasket.
  • the display device includes a display panel.
  • the display panel includes a plurality of pixels for displaying images, including the above-mentioned gate-side detection structure.
  • a gate side detection structure design is proposed, and a new module is provided on the gate side fan-out block to avoid the gate die soft film package (Gate-Chip on Film, G-COF).
  • the circuit is short-circuited with the red (R), green (G), and blue (B) buses used for testing to solve the problem of poor circuit caused by the aforementioned defects.
  • FIG. 1 is a schematic diagram of a driving structure of a thin film transistor liquid crystal display
  • Figure 2 is a schematic diagram of the existing gate side detection structure design
  • FIG. 3 is a schematic diagram of a gate side detection circuit provided by an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a driving structure of a thin film transistor liquid crystal display.
  • Figure 1 lists the basic ideas of this application.
  • Thin-film transistor liquid crystal display Thin Film Transistor Liquid Crystal, TFT-LCD
  • TFT-LCD Thin Film Transistor Liquid Crystal
  • Thin film transistor liquid crystal display Thin Film Transistor Liquid Crystal, TFT-LCD
  • the system board passes red (R), green (G), blue (B) compressed signals, control signals and power through the wire and printed circuit board (Printed circuit board, PCB) 110 is connected to the electronic connector (connector), the data is processed by the driver chip (Timing Controller IC, TCON IC) 120 on the printed circuit board (PCB) 110, and then printed
  • the printed circuit board (PCB) 110, through the source die soft film package (Source-Chip on Film, S-COF) 130 and the gate die soft film package (Gate-Chip on Film, G-COF ) 140 is connected to the display area 100, so that the liquid crystal display (Liquid Crystal Display, LCD) obtains the required power and signal.
  • the liquid crystal display Liquid Crystal Display, LCD
  • FIG. 2 is a schematic diagram of an existing gate-side detection structure design.
  • the gate side fan-out block is used to fit the printed circuit board (PCB) and the source-chip soft film package (Source-Chip on Film, S-COF) and Before the gate die soft film package (Gate-Chip on Film, G-COF), the image quality inspection of the panel is performed, and the gate (Gate) side is provided with red (R), green (G), and blue (B) Three signal buses, where channel N (Channel) 150 is connected to red (R), channel N + 1 (Channel N + 1) 150 is connected to green (G), and channel N + 2 (Channel N + 2) 150 is connected to blue (B) Connected, and back and forth in turn.
  • Pad N (Pad) 160, Pad N + 1 (Pad N + 1) 160, Pad N + 2 (Pad N + 2) 160 are gate-die soft film packages (Gate-Chip on Film, G -COF) Corresponding bonding pads during actual bonding.
  • G -COF gate-die soft film packages
  • the signal can be externally injected to the LCD panel through the three bus lines of red (R), green (G), and blue (B).
  • Perform screen detection After the picture detection is completed, the laser is cut off through the external filling line to avoid the gate die soft film package (Gate-Chip on Film, G-COF) bonding, red (R) / green (G) / blue (B) The influence of the bus on the display.
  • FIG. 3 is a schematic diagram of a gate side detection circuit provided by an embodiment of the present application.
  • the grid-side detection structure proposed in this application includes a printed circuit board (PCB), a display area, and a plurality of gates (gates) disposed on the display area side, including: laser block 270; multiple A signal channel is provided on the gate side of the display area, and each of the signal channels is electrically connected to a ground loop (GND), a positive polarity switch, a diode (D), and a pad; and A red (R) / green (G) / blue (B) signal bus, which is disposed on the gate side and is perpendicular to the signal channel; wherein the plurality of signal channels are sequentially (R) signal lines, green (G) signal lines, and blue (B) signal lines are sequentially and electrically connected, and are powered by the printed circuit board (PCB) to perform screen detection in the display area, After the detection of the picture in the display area is completed, the laser block 270 is used to laser
  • M1 is a positive polarity switch.
  • MOS is hereinafter referred to as a positive polarity switch (MOS, M1).
  • MOS, M1 When its gate voltage is high (H), the positive polarity switch (MOS, M1) is turned on.
  • MOS, M1 When its gate voltage is low (L ), The positive polarity switch (MOS, M1) is closed;
  • VGH is the gate voltage, which is powered by the printed circuit board (PCB);
  • the ground loop (GND) is 0V, that is, the gate voltage is low ( L).
  • the resistance (R) is a large-value resistance, in order to avoid a large current between the gate voltage (VGH) and the negative pole of the ground loop (GND) power supply, the general value is ⁇ 100K ⁇ .
  • the laser block in the figure is not laser cut, when the gate voltage (VGH) of the positive polarity switch (MOS, M1) When it is high (H), the positive polarity switch (MOS, M1) is turned on.
  • D because of the unidirectional conductivity of the diode (D), the static electricity on the cell during the test can be avoided, which can cause damage to the test machine.
  • the laser line is laser-cut on the overfill line of the laser block 270, and then the gate-chip soft film packaging (Gate-Chip on Film, G-COF) bonding process is performed.
  • G-COF Gate-chip soft film packaging
  • the gate voltage of the positive polarity switch (MOS, M1) is the ground loop (GND), that is, low (L), and the positive polarity switch (MOS, M1) is turned off.
  • GND ground loop
  • the positive polarity switch (MOS, M1) is turned off.
  • Channel N (Channel N) and Pad N (Pad N) are disconnected.
  • the ground loop (GND) is electrically connected to a large resistance resistor to prevent the ground loop (GND) and the gate voltage (VGH) from generating a large current.
  • the value of the large resistance (R) is ⁇ 100K ⁇ .
  • the positive polarity switch when the gate voltage (VGH) is high (H), the positive polarity switch is turned on.
  • the positive polarity switch when the gate voltage (VGH) is low (L), the positive polarity switch is turned off.
  • the gate voltage (VGH) is powered by the printed circuit board, and when the ground loop (GND) is 0V, the gate voltage (VGH) is low (L).
  • the diode (D) is unidirectionally conductive.
  • the gate voltage (VGH) and the ground loop (GND) of the positive polarity switch are 0, which is low (L).
  • the positive polarity switch when the laser block is cut, the positive polarity switch is closed, and the signal channel is disconnected from the corresponding ground loop, positive polarity switch, and diode and the gasket.
  • the processing method of FIG. 3 has the following advantages:
  • the laser line is laser cut to the external filling line of the laser block, and then the gate die soft film packaging (Gate-Chip on Film, G-COF) bonding process is performed.
  • the gate voltage of the positive polarity switch (MOS, M1) is the ground loop (GND), which is low (L), and the positive polarity switch (MOS, M1) is turned off.
  • GND ground loop
  • Pad N Pad N
  • An embodiment of the present application further provides a display device.
  • the display device includes a display panel.
  • the display panel includes a plurality of pixels for displaying images.
  • the display panel includes the above-mentioned gate-side detection structure.
  • this application provides a viewing angle compensation algorithm for a display, which can optimize the viewing angle characteristics of the display.
  • a viewing angle compensation algorithm for a display, which can optimize the viewing angle characteristics of the display.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

La présente invention concerne une structure de détection d'un panneau d'affichage et un dispositif d'affichage. Le panneau d'affichage comprend une carte de circuit imprimé et une zone d'affichage. La structure de détection comprend : un bloc laser ; de multiples canaux de signaux agencés dans la zone d'affichage, chaque canal de signal étant électriquement connecté à une boucle de masse (GND), à un commutateur de polarité positive, à une diode et à une pastille ; et un bus de signaux de source de lumière qui est dans un état vertical par rapport au canal de signal, les multiples canaux de signaux étant électriquement connectés, selon une séquence cyclique, respectivement à une ligne de signal de lumière rouge, à une ligne de signal de lumière verte et à une ligne de signal de lumière bleue du bus de signaux de source de lumière, et la carte de circuit imprimé fournit l'alimentation électrique pour réaliser une détection d'image de la zone d'affichage.
PCT/CN2019/073194 2018-11-09 2019-01-25 Structure de détection de panneau d'affichage et dispositif d'affichage WO2020093606A1 (fr)

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CN201811331470.0 2018-11-09
CN201811331470.0A CN109256073A (zh) 2018-11-09 2018-11-09 一种显示面板检测结构及显示设备

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Publication number Priority date Publication date Assignee Title
CN109256073A (zh) * 2018-11-09 2019-01-22 惠科股份有限公司 一种显示面板检测结构及显示设备
CN109754736B (zh) * 2019-03-14 2022-10-25 惠科股份有限公司 检测电路及显示基板
CN110221491A (zh) * 2019-05-06 2019-09-10 惠科股份有限公司 阵列基板及其制作方法、液晶显示面板
CN110890410B (zh) * 2019-11-29 2022-08-09 京东方科技集团股份有限公司 阵列基板、显示面板和显示装置
CN113539131A (zh) * 2021-07-20 2021-10-22 京东方科技集团股份有限公司 显示面板及制作方法、显示母板及检测方法、显示装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120025855A1 (en) * 2010-07-29 2012-02-02 Kai-Ting Chang Display device having repair and detect structure
CN202275249U (zh) * 2011-09-07 2012-06-13 深圳市华星光电技术有限公司 短路棒组件、液晶显示面板和液晶显示器
CN105759472A (zh) * 2016-05-06 2016-07-13 深圳市华星光电技术有限公司 面板检测单元、阵列基板及液晶显示装置
CN106652859A (zh) * 2016-11-23 2017-05-10 上海中航光电子有限公司 显示面板及其制作方法、显示设备和显示测试方法
CN109256073A (zh) * 2018-11-09 2019-01-22 惠科股份有限公司 一种显示面板检测结构及显示设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10260391A (ja) * 1997-03-19 1998-09-29 Fujitsu Ltd 検査回路を有する液晶表示装置
CN103325327B (zh) * 2013-06-20 2016-03-30 深圳市华星光电技术有限公司 一种显示面板、显示面板的检测线路
CN104062784B (zh) * 2014-06-25 2017-06-30 深圳市华星光电技术有限公司 一种面板检测电路及显示面板
CN104849881B (zh) * 2015-05-04 2018-04-13 上海天马微电子有限公司 一种显示装置及其驱动方法
CN108565278A (zh) * 2018-02-28 2018-09-21 京东方科技集团股份有限公司 阵列基板母板、阵列基板、显示装置及其制作方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120025855A1 (en) * 2010-07-29 2012-02-02 Kai-Ting Chang Display device having repair and detect structure
CN202275249U (zh) * 2011-09-07 2012-06-13 深圳市华星光电技术有限公司 短路棒组件、液晶显示面板和液晶显示器
CN105759472A (zh) * 2016-05-06 2016-07-13 深圳市华星光电技术有限公司 面板检测单元、阵列基板及液晶显示装置
CN106652859A (zh) * 2016-11-23 2017-05-10 上海中航光电子有限公司 显示面板及其制作方法、显示设备和显示测试方法
CN109256073A (zh) * 2018-11-09 2019-01-22 惠科股份有限公司 一种显示面板检测结构及显示设备

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