WO2020082467A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2020082467A1
WO2020082467A1 PCT/CN2018/115946 CN2018115946W WO2020082467A1 WO 2020082467 A1 WO2020082467 A1 WO 2020082467A1 CN 2018115946 W CN2018115946 W CN 2018115946W WO 2020082467 A1 WO2020082467 A1 WO 2020082467A1
Authority
WO
WIPO (PCT)
Prior art keywords
chip
electrically connected
board
system chip
display device
Prior art date
Application number
PCT/CN2018/115946
Other languages
English (en)
Chinese (zh)
Inventor
王念茂
Original Assignee
深圳市华星光电半导体显示技术有限公司
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
Application filed by 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Publication of WO2020082467A1 publication Critical patent/WO2020082467A1/fr

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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
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for 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
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for 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 by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for 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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13454—Drivers integrated on the active matrix substrate
    • 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
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for 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
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for 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 by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for 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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • 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
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for 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
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for 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 by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for 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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers

Definitions

  • the present invention relates to the field of display technology, and particularly to a display device.
  • liquid crystal display devices Liquid Crystal Display, LCD
  • other flat panel display devices have gradually replaced cathode ray tube (Cathode Ray Tube, CRT) display devices.
  • the liquid crystal display device has many advantages such as a thin body, power saving, no radiation, etc., and is widely used.
  • liquid crystal display devices which include a liquid crystal display panel and a backlight module.
  • a liquid crystal display panel is composed of a color filter (CF) substrate, a thin film transistor (Thin Film Transistor, TFT) array substrate, a liquid crystal (LC) and a sealant sandwiched between the color film substrate and the thin film transistor array substrate Frame (Sealant) composition.
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules in two parallel glass substrates. There are many vertical and horizontal small wires in the middle of the two glass substrates. The liquid crystal molecules can be controlled to change the direction by turning on or off the light of the backlight module Refracted to produce a picture.
  • FIG. 1 is a schematic structural diagram of a conventional display device, including a display panel 100, a chip on film (COF) 200 electrically connected to the display panel 100, and a timing controller electrically connected to the chip on film 200 Board (TCON) 300, flexible flat cable (FFC) 400 electrically connected to the timing control board 300, and a system chip board (SoC) 500 electrically connected to the flexible flat cable 400, wherein the flip chip 200 is provided
  • the active electrode driving chip 210, the timing controller board 300 is provided with a timing controller 310, the first memory chip 320 and the first DC voltage to DC voltage (DC / DC) module 330, and the system chip board 500 is provided with a system chip 510, a flash memory 520, a second storage chip 530, a second DC / DC module 540, and an AC voltage to DC voltage (AC / DC) module 550.
  • the structure of the external circuit board of the above display device is complicated and the cost is high.
  • the prior art will merge the timing controller board and the system chip board, but it will increase the weight of the combined circuit board. This makes it difficult to bond with the display panel through the flip chip, and the flip chip is likely to peel during transportation, and mass production is also difficult.
  • the object of the present invention is to provide a display device with a simple structure, high reliability and low cost.
  • the present invention first provides a display device, including: a display panel, a flip-chip film electrically connected to the display panel, a transmission board electrically connected to the flip-chip film, and a transmission board electrically Connected system chip board;
  • the flip chip includes a timing control and source driver chip electrically connected to the display panel; the system chip board includes a timing control and source driver chip electrically connected to the flip chip through the transmission board and has an overdrive function System chip.
  • the display device further includes a flexible flat cable, and the system chip board is electrically connected to the transmission board through the flexible flat cable.
  • the transmission board includes a first memory chip electrically connected to the timing control of the flip-chip film and the source driver chip.
  • the system chip board further includes a DC / DC module electrically connected to the system chip and electrically connected to the chip-on-film and timing control of the transmission board and the source driver chip.
  • the system chip board further includes a second memory chip electrically connected to the system chip, a flash memory electrically connected to the system chip, and an AC / DC module electrically connected to the DC / DC module.
  • the invention also provides a display device comprising: a display panel, a flexible printed circuit board electrically connected to the display panel, a connector electrically connected to the flexible printed circuit board, and an electrical connection to the connector A system chip board and a source driver electrically connected to the display panel;
  • the system chip board includes a system chip with a timing control function
  • the source driver chip is bonded on the display panel and is electrically connected to the flexible printed circuit board; or, the source driver chip is bonded on the flexible printed circuit board;
  • the system chip is electrically connected to the source driving chip through the connector and the flexible printed circuit board.
  • the flexible printed circuit board is electrically connected to the display panel in a bonding manner.
  • the system chip board further includes a DC / DC module electrically connected to the system chip.
  • the system chip board further includes a flash memory electrically connected to the system chip.
  • the system chip board further includes an AC / DC module electrically connected to the DC / DC module.
  • a display device provided by the present invention forms a timing control and source driving chip by integrating a timing controller and a source driving chip, or integrates the timing controller and a system chip and passes a flexible printed circuit
  • the board and the connector electrically connect the system chip board and the display panel, so that the area of the circuit board in the display device is greatly reduced, the number of chips is reduced, the structure is simple, the product cost is low, and the reliability is greatly improved.
  • FIG. 1 is a schematic structural diagram of a conventional display device
  • FIG. 2 is a schematic structural diagram of a first embodiment of a display device of the present invention.
  • FIG. 3 is a schematic structural diagram of a second embodiment of the display device of the present invention.
  • FIG. 4 is a schematic structural diagram of a third embodiment of the display device of the present invention.
  • the first embodiment of the display device of the present invention includes: a display panel 10, a flip chip 20 electrically connected to the display panel 10, a transmission board 30 electrically connected to the flip chip 20, A system chip board 40 electrically connected to the transmission board 30.
  • the flip chip 20 includes a timing control and source driver chip 21 electrically connected to the display panel 10.
  • the timing control and source driver chip 21 has all the functions of the source driver and the timing controller in the prior art. All functions except overdrive (OD), that is, the first embodiment of the present invention adopt a TID (TCON In Driver) design that integrates a source driver and a timing controller.
  • the system chip board 40 includes a system chip 41 having an over-driving function electrically connected to the timing control of the transmission board 30 and the flip chip 20 and the source driving chip 21.
  • the flip chip 20 is electrically connected to the display panel 10 and the transmission board 30 by bonding.
  • the display device further includes a flexible flat cable 50, and the system chip board 40 is electrically connected to the transmission board 30 through the flexible flat cable 50.
  • the transmission board 30 includes a first memory chip 31 electrically connected to the timing control of the flip-chip film 20 and the source driving chip 21.
  • the first memory chip 31 is a charged erasable programmable read-only memory (EEPROM).
  • EEPROM charged erasable programmable read-only memory
  • the system chip board 40 further includes a DC / DC module 42 electrically connected to the system chip 41 and electrically connected to the chip-on-film 20 through the timing control of the transmission board 30 and the source driver chip 21 .
  • the DC / DC module 42 is a power management chip (PMIC).
  • PMIC power management chip
  • the system chip board 40 further includes a second memory chip 43 electrically connected to the system chip 41, a flash memory 44 electrically connected to the system chip 41, and electrically connected to the DC / DC module 42 Connected AC / DC module 45.
  • the second memory chip 43 is a charged erasable programmable read-only memory (EEPROM).
  • EEPROM charged erasable programmable read-only memory
  • the timing control and the location on the flip-chip film 20 are obtained.
  • the source drives the chip 21, and at the same time adds an overdrive function to the system chip 41, and integrates the existing DC / DC module on the timing controller board with the DC / DC module on the system chip board.
  • the original timing controller board is provided with only the first memory chip 31 to become the transmission board 30 with a signal transmission function, thereby making the display
  • the area of the circuit board in the device is greatly reduced, the cost is reduced, and at the same time, the bonding of the flip chip 20, the transmission board 30 and the display panel 10 is not affected, and the reliability of the product is improved.
  • a second embodiment of the display device of the present invention includes: a display panel 10 ', a flexible printed circuit board (FPC) 20' electrically connected to the display panel 10 ', and the flexible printed circuit board 20 'an electrically connected connector 30', a system chip board 40 'electrically connected to the connector 30', and a source driver 50 'electrically connected to the display panel 10'.
  • FPC flexible printed circuit board
  • the system chip board 40 ' includes a system chip 41' having a timing control function.
  • the source driver chip 50 ' is bonded on the display panel 10' and electrically connected to the flexible printed circuit board 20 '.
  • the system chip 41 ' is electrically connected to the source driving chip 50' through the connector 30 'and the flexible printed circuit board 20'.
  • the flexible printed circuit board 20 ' is electrically connected to the display panel 10' by bonding.
  • the system chip board 40 'further includes a DC / DC module 42' electrically connected to the system chip 41 '.
  • the DC / DC module 42 ' is a PMIC.
  • the system chip board 40 'further includes a flash memory 43' electrically connected to the system chip 41 '.
  • the system chip board 40 'further includes an AC / DC module 45' electrically connected to the DC / DC module 42 '.
  • a system chip 41 ′ with a timing control function is provided on the system chip board 40 ′, that is, the timing controller in the prior art and the system chip are integrated, and the The source driver chip 50 'is directly bonded to the display panel 10', one end of the flexible printed circuit board 20 'is bonded to the display panel 10', and the other end of the flexible printed circuit board 20 'is connected to the system through the connector 30'
  • the control function makes the overall weight of the system chip board 40 'heavier, but because the system chip board 40' and the flexible printed circuit board 20 'are not electrically connected by bonding but electrically connected by the connector 30', the connection effect is good , The difficulty of assembly is reduced, and the reliability is high
  • the difference between the third embodiment of the present invention and the second embodiment described above is that the source driver chip 50 'is bonded on the flexible printed circuit board 20', and the rest are the same as the second embodiment The same, no more details here.
  • the source driver chip 50 ' is changed from bonding on the display panel 10' to directly bonding on the flexible printed circuit board 20 ' , While reducing the area of the circuit board in the display device to reduce product cost, reduce assembly difficulty, and improve product reliability, it also enhances the heat dissipation performance of the source driver chip 50 ', further improving the reliability of the product, and this
  • the panel manufacturer only needs a custom-made process to bond the flexible printed circuit board 20 'to the display panel 10' during the manufacturing process, and the manufacturing process is simple.
  • the display device of the present invention forms the timing control and source driving chip by integrating the timing controller and the source driving chip, or integrates the timing controller and the system chip and passes through the flexible printed circuit board and the connector
  • the system chip board and the display panel are electrically connected, so that the area of the circuit board in the display device is greatly reduced, the number of chips is reduced, the structure is simple, the product cost is lower, and the reliability is greatly improved.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un dispositif d'affichage. Un contrôleur de synchronisation est intégré à une puce de commande de source de façon à former une commande de synchronisation et une puce de commande de source (21), ou le contrôleur de synchronisation est intégré à un système sur puce, et un système sur la carte à puce (40') est connecté électriquement à un panneau d'affichage (10') au moyen d'une carte de circuit imprimé souple (20') et d'un connecteur.
PCT/CN2018/115946 2018-10-22 2018-11-16 Dispositif d'affichage WO2020082467A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811231812.1 2018-10-22
CN201811231812.1A CN109358458B (zh) 2018-10-22 2018-10-22 显示装置

Publications (1)

Publication Number Publication Date
WO2020082467A1 true WO2020082467A1 (fr) 2020-04-30

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ID=65346109

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Application Number Title Priority Date Filing Date
PCT/CN2018/115946 WO2020082467A1 (fr) 2018-10-22 2018-11-16 Dispositif d'affichage

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CN (1) CN109358458B (fr)
WO (1) WO2020082467A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110827777B (zh) * 2019-10-18 2020-11-24 深圳市华星光电技术有限公司 显示面板驱动装置及其配置方法
CN110930896A (zh) * 2019-11-26 2020-03-27 Tcl华星光电技术有限公司 显示面板
CN114023769A (zh) * 2021-10-27 2022-02-08 Tcl华星光电技术有限公司 覆晶薄膜及显示模组
CN114822401B (zh) * 2022-06-30 2022-09-27 惠科股份有限公司 显示装置、源极覆晶薄膜和驱动方法

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US20060232579A1 (en) * 2005-04-14 2006-10-19 Himax Technologies, Inc. WOA panel architecture
CN202084281U (zh) * 2011-06-16 2011-12-21 北京京东方光电科技有限公司 一种液晶显示器的驱动装置及液晶显示装置
CN102855044A (zh) * 2012-09-12 2013-01-02 北京京东方光电科技有限公司 一种触控显示装置
CN103745703A (zh) * 2013-12-31 2014-04-23 深圳市华星光电技术有限公司 一种液晶面板的驱动电路、液晶面板和液晶显示装置
CN204302618U (zh) * 2015-01-04 2015-04-29 京东方科技集团股份有限公司 一种显示装置
CN105869591A (zh) * 2016-05-31 2016-08-17 深圳市华星光电技术有限公司 一种驱动电路及液晶显示装置

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CN100388350C (zh) * 2005-03-31 2008-05-14 奇景光电股份有限公司 液晶显示器的栅极控制信号产生装置及方法
KR101289642B1 (ko) * 2009-05-11 2013-07-30 엘지디스플레이 주식회사 액정표시장치
KR101609836B1 (ko) * 2009-12-10 2016-04-07 엘지디스플레이 주식회사 액정표시장치 및 그 제조방법
CN105869595B (zh) * 2016-06-03 2018-07-27 深圳市华星光电技术有限公司 一种显示驱动***及液晶显示器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060232579A1 (en) * 2005-04-14 2006-10-19 Himax Technologies, Inc. WOA panel architecture
CN202084281U (zh) * 2011-06-16 2011-12-21 北京京东方光电科技有限公司 一种液晶显示器的驱动装置及液晶显示装置
CN102855044A (zh) * 2012-09-12 2013-01-02 北京京东方光电科技有限公司 一种触控显示装置
CN103745703A (zh) * 2013-12-31 2014-04-23 深圳市华星光电技术有限公司 一种液晶面板的驱动电路、液晶面板和液晶显示装置
CN204302618U (zh) * 2015-01-04 2015-04-29 京东方科技集团股份有限公司 一种显示装置
CN105869591A (zh) * 2016-05-31 2016-08-17 深圳市华星光电技术有限公司 一种驱动电路及液晶显示装置

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CN109358458A (zh) 2019-02-19

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