WO2020124821A1 - Dispositif d'affichage à cristaux liquides à lunette étroite, terminal portatif et procédé d'agencement d'éléments - Google Patents

Dispositif d'affichage à cristaux liquides à lunette étroite, terminal portatif et procédé d'agencement d'éléments Download PDF

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Publication number
WO2020124821A1
WO2020124821A1 PCT/CN2019/078389 CN2019078389W WO2020124821A1 WO 2020124821 A1 WO2020124821 A1 WO 2020124821A1 CN 2019078389 W CN2019078389 W CN 2019078389W WO 2020124821 A1 WO2020124821 A1 WO 2020124821A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
display device
glass substrate
electrical connection
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.)
Ceased
Application number
PCT/CN2019/078389
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English (en)
Chinese (zh)
Inventor
李建国
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.)
Individual
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Individual
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Filing date
Publication date
Priority claimed from CN201811557919.5A external-priority patent/CN109445145A/zh
Priority claimed from CN201822142815.XU external-priority patent/CN209311829U/zh
Application filed by Individual filed Critical Individual
Publication of WO2020124821A1 publication Critical patent/WO2020124821A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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

Definitions

  • the invention relates to a liquid crystal display device, in particular to a narrow-frame liquid crystal display device, and to a method of arranging its components, and a handheld terminal adopting such a display device.
  • Narrow bezels are an important development direction for handheld terminals such as smartphones and tablets.
  • the screen-to-body ratio is an important indicator for measuring handheld terminals. The smaller the bezel, the larger the screen-to-body ratio and the larger the display area.
  • FIG. 1 shows the structure of a liquid crystal display device of a conventional mobile phone.
  • this liquid crystal display device includes: a glass substrate 10; a liquid crystal display panel 20 provided on the glass substrate 10; and a liquid crystal display panel 20 provided on the glass substrate 10 for communicating with the main control circuit board 60 A first electrical connection portion; a chip 40 provided at one edge of the glass substrate 10 and electrically connected to the liquid crystal display panel 20 and the first electrical connection portion; and a flexible circuit board 50, flexible One end of the circuit board 50 is electrically connected to the first electrical connection portion, and the other end is electrically connected to the main control circuit board 60.
  • the signal output from the main control circuit board 60 passes through the flexible circuit board 50 and the chip 40 in order, and then is transmitted to the liquid crystal display panel 20.
  • the width W of the glass substrate 10 occupied by the chip 40 and the flexible circuit board 50 is relatively large, especially as the resolution of the display device continues to increase, the number of lines of the flexible circuit board continues to increase, occupying The space will continue to increase, which is not conducive to further reducing the frame, and is not conducive to improving the screen ratio.
  • chip on film Chip On Flex, COF
  • the chip 40 originally bound to the glass substrate 10 is removed and bound to the flexible circuit board 50, and one end of the flexible circuit board 50 is bound to the glass substrate 10 and the liquid crystal display panel 20 is electrically connected, and the other end of the flexible circuit board 50 is electrically connected to the main control circuit board 60.
  • the chip no longer occupies the area of the glass substrate, so the width W of the frame is effectively reduced, the screen ratio is improved, and the chip is easily removed, which is beneficial to the maintenance of the display device.
  • the production process of the flip-chip thin film flexible circuit board is complicated, and the product cost is high.
  • the object of the present invention is to provide a low-cost narrow-frame liquid crystal display device, a handheld terminal and a component arrangement method.
  • a narrow frame liquid crystal display device the base includes:
  • a liquid crystal display panel provided on the glass substrate
  • a first electrical connection part provided on the glass substrate for communicating with the main control circuit board
  • a chip provided at one edge of the glass substrate and electrically connected to the liquid crystal display panel and the first electrical connection portion;
  • a flexible circuit board one end of which is electrically connected to the first electrical connection part, and the other end is provided with a second electrical connection part to connect the main control circuit board;
  • the first electrical connection part and the chip are arranged along the edge of the glass substrate.
  • the chip is located between the two groups of the first electrical connection parts.
  • the chip has a rectangular shape, and the long side of the chip is parallel to the edge of the glass substrate.
  • the first electrical connection portion is a plurality of bonding points
  • the second electrical connection portion is a plug-in sheet having a plurality of contacts.
  • a handheld terminal including:
  • a liquid crystal display device which is arranged above the main control circuit board and is electrically connected to the main control circuit board through a flexible circuit board;
  • liquid crystal display device may be any of the narrow frame liquid crystal display devices described above.
  • a component arrangement method of a liquid crystal display device including:
  • the chip is bound to the glass substrate of the liquid crystal display device.
  • the flexible circuit board is bound to the glass substrate;
  • the binding position of the chip and the binding position of the flexible circuit board are arranged along one edge of the glass substrate.
  • the present invention has at least the following beneficial effects:
  • the present invention effectively reduces the width of the frame and improves the screen-to-body ratio. Because the bonding of chips still uses the traditional COG (chip on glass) technology, it also has the advantages of simple process and low cost.
  • FIG. 1 is a schematic structural diagram of a liquid crystal display device of a traditional mobile phone
  • FIG. 2 is a schematic structural diagram of an existing narrow-frame liquid crystal display device
  • FIG. 3 is a schematic front view of some embodiments of a narrow-frame liquid crystal display device in an unfolded state
  • FIG. 4 is a schematic diagram of the side structure of a narrow bezel liquid crystal display device according to some embodiments.
  • Figure 5 is its exploded state diagram.
  • some embodiments of the narrow-frame LCD device include:
  • the liquid crystal display panel 20 provided on the glass substrate 10;
  • a first electrical connection portion 30 provided on the glass substrate 10 for communicating with the main control circuit board 60;
  • a chip 40 which is disposed at the lower edge of the glass substrate 10 and is electrically connected to the liquid crystal display panel 20 and the first electrical connection portion 30, respectively;
  • the flexible circuit board 50 has one end 51 electrically connected to the first electrical connection part 30 and a second electrical connection part 52 at the other end to connect the main control circuit board 60;
  • the first electrical connection portion 30 and the chip 40 are arranged along the lower edge of the glass substrate 10.
  • the narrow-bezel liquid crystal display device has two sets of the first electrical connection portions 30, and the chip 40 is located between the two sets of the first electrical connection portions 30.
  • Such a design is beneficial to shorten the length of the conductor between the chip 40 and the first electrical connection portion 30, and to reduce signal attenuation.
  • this solution is more effective due to the large number of lines obvious.
  • the chip 40 adopts a chip with a rectangular structure, and the long side of the chip 40 is parallel to the lower edge of the glass substrate 10. Compared with a chip with a square structure, this chip with a rectangular structure is more conducive to reducing the value of the parameter W, and is conducive to further increasing the screen-to-body ratio.
  • the first electrical connection portion 30 is a plurality of bonding points
  • the second electrical connection portion 52 is a plug-in tab having a plurality of contacts.
  • one end 51 of the flexible circuit board 50 is bonded to the glass substrate 10 with the first electrical connection portion 30, and the other end of the flexible circuit board 50 is connected to the main control circuit board 60 through the second electrical connection portion 52.
  • the socket 61 is plugged in.
  • a display device of a specification can be easily connected to different main control circuit boards to form different types of handheld terminals, which improves the adaptability of the display device.
  • the above-mentioned narrow-frame liquid crystal display device can be applied to smart phones, tablet computers, IPAD, etc., and constitutes a narrow-frame smart phone, tablet computer, IPAD, etc., that is, a handheld terminal that forms a narrow frame.
  • the liquid crystal display device is provided above the main control circuit board, and is electrically connected to the main control circuit board through a flexible circuit board, as shown in FIG. 4.
  • the method for arranging components of a liquid crystal display device in some embodiments includes: a chip 40 is bound to the glass substrate 10 of the liquid crystal display device; and a flexible circuit board 50 is bound to the glass substrate 10; it is important The binding positions of the chip 40 and the flexible circuit board 50 are arranged along the lower edge (ie, one edge) of the glass substrate 10, so as to achieve the purpose of achieving a narrow-frame liquid crystal display device at a low cost.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne un dispositif d'affichage à cristaux liquides à lunette étroite, un terminal portatif et un procédé d'agencement d'éléments. Le dispositif d'affichage comprend : un substrat de verre (10); un écran d'affichage à cristaux liquides (20) disposé au niveau du substrat de verre (10); une première partie de connexion électrique (30) disposée au niveau du substrat de verre (10) et utilisée pour communiquer avec une carte de circuit de commande principale (60); une puce (40) disposée au niveau d'un bord du substrat de verre (10) et connectée respectivement à l'écran d'affichage à cristaux liquides (20) et la première partie de connexion électrique (30); et une carte de circuit imprimé souple (50) ayant une extrémité connectée électriquement à la première partie de connexion électrique (30) et l'autre extrémité étant pourvue d'une seconde partie de connexion électrique (52), la première partie de connexion électrique (30) et la puce (40) étant agencées le long dudit bord du substrat en verre (10). Le terminal portatif utilise le dispositif d'affichage. Le procédé comprend l'agencement d'une position de liaison d'une puce (40) et d'une position de liaison d'une carte de circuit imprimé souple (50) le long d'un bord du substrat de verre (10). L'invention permet d'obtenir un dispositif d'affichage à cristaux liquides à lunette étroite à faible coût.
PCT/CN2019/078389 2018-12-19 2019-03-16 Dispositif d'affichage à cristaux liquides à lunette étroite, terminal portatif et procédé d'agencement d'éléments Ceased WO2020124821A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201811557919.5 2018-12-19
CN201811557919.5A CN109445145A (zh) 2018-12-19 2018-12-19 窄边框液晶显示装置、手持终端及元件布置方法
CN201822142815.X 2018-12-19
CN201822142815.XU CN209311829U (zh) 2018-12-19 2018-12-19 窄边框液晶显示装置及手持终端

Publications (1)

Publication Number Publication Date
WO2020124821A1 true WO2020124821A1 (fr) 2020-06-25

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PCT/CN2019/078389 Ceased WO2020124821A1 (fr) 2018-12-19 2019-03-16 Dispositif d'affichage à cristaux liquides à lunette étroite, terminal portatif et procédé d'agencement d'éléments

Country Status (1)

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WO (1) WO2020124821A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000089241A (ja) * 1998-09-07 2000-03-31 Toshiba Corp 平面表示装置
CN1256476A (zh) * 1998-12-08 2000-06-14 富士通株式会社 矩阵型显示装置及其制造方法和热压键合头
JP2000227605A (ja) * 1998-11-30 2000-08-15 Optrex Corp 液晶表示装置
JP2000241827A (ja) * 1999-02-16 2000-09-08 Internatl Business Mach Corp <Ibm> Ｃｏｇ構造の液晶表示装置
JP2004361722A (ja) * 2003-06-05 2004-12-24 Advanced Display Inc 表示装置
JP2010175972A (ja) * 2009-01-30 2010-08-12 Canon Inc 表示装置
CN109445145A (zh) * 2018-12-19 2019-03-08 李建国 窄边框液晶显示装置、手持终端及元件布置方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000089241A (ja) * 1998-09-07 2000-03-31 Toshiba Corp 平面表示装置
JP2000227605A (ja) * 1998-11-30 2000-08-15 Optrex Corp 液晶表示装置
CN1256476A (zh) * 1998-12-08 2000-06-14 富士通株式会社 矩阵型显示装置及其制造方法和热压键合头
JP2000241827A (ja) * 1999-02-16 2000-09-08 Internatl Business Mach Corp <Ibm> Ｃｏｇ構造の液晶表示装置
JP2004361722A (ja) * 2003-06-05 2004-12-24 Advanced Display Inc 表示装置
JP2010175972A (ja) * 2009-01-30 2010-08-12 Canon Inc 表示装置
CN109445145A (zh) * 2018-12-19 2019-03-08 李建国 窄边框液晶显示装置、手持终端及元件布置方法

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