WO2018120931A1 - 液晶显示装置及其面板、显示面板与系统电路的连接结构 - Google Patents

液晶显示装置及其面板、显示面板与系统电路的连接结构 Download PDF

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Publication number
WO2018120931A1
WO2018120931A1 PCT/CN2017/102467 CN2017102467W WO2018120931A1 WO 2018120931 A1 WO2018120931 A1 WO 2018120931A1 CN 2017102467 W CN2017102467 W CN 2017102467W WO 2018120931 A1 WO2018120931 A1 WO 2018120931A1
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Prior art keywords
connection structure
layers
display panel
circuit board
system circuit
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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/CN2017/102467
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English (en)
French (fr)
Inventor
陈猷仁
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
Chongqing HKC Optoelectronics Technology Co Ltd
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HKC Co Ltd
Chongqing HKC Optoelectronics Technology Co Ltd
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Priority to US15/845,242 priority Critical patent/US10283064B2/en
Publication of WO2018120931A1 publication Critical patent/WO2018120931A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G09G3/20—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
    • G09G3/3666—Control of matrices with row and column drivers using an active matrix with the matrix divided into sections
    • 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
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • 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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • 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
    • G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • G02F1/13629—Multilayer wirings
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/111—Pads for surface mounting, e.g. lay-out
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09372—Pads and lands
    • H05K2201/09409—Multiple rows of pads, lands, terminals or dummy patterns; Multiple rows of mounted components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10128—Display
    • H05K2201/10136—Liquid Crystal display [LCD]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
    • H05K3/321—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by conductive adhesives
    • H05K3/323—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by conductive adhesives by applying an anisotropic conductive adhesive layer over an array of pads
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/361—Assembling flexible printed circuits with other printed circuits

Definitions

  • the present disclosure relates to the field of liquid crystal display manufacturing technologies, and in particular, to a liquid crystal display device, a liquid crystal panel, and a connection structure between a display panel and a system circuit.
  • the array substrate of the LCD has a display area and a fan-out area, and a signal line for driving the source and the gate on the display area is integrated on the display area. Traces are arranged on the fan-out area, and the start of the trace is soldered to the signal line, and the end of the trace is electrically connected by connecting an anisotropic conductive film (ACF) with a wire on the flexible circuit board, and then the flexible circuit board and system The board is electrically connected to enable electrical connection of the system circuitry to the display area.
  • ACF anisotropic conductive film
  • the design of the end of the trace of the general fan-out area is limited by the particle size of the ACF conductive particles, the spacing between the flexible circuit board conductors, and the ability to press the device end.
  • most of the wiring on the large-size LCD array substrate is designed as a single-row wiring structure, and the integrated circuit density on the small-sized LCD array substrate is high, and the double-row wiring structure is mostly.
  • the signal lines and trace structures on the array substrate, the layout of the wires on the flexible circuit board, the ACF application materials or the press-fit equipment need to be updated to cope with higher density. The challenge of integrating circuits.
  • the technical problem to be solved by the present disclosure is to provide a liquid crystal display device, a liquid crystal panel, and a connection structure between a display panel and a system circuit, and aim to solve the problem that the connection structure in the prior art cannot meet the wiring of a medium-sized LCD high-density integrated circuit. problem.
  • connection structure between a display panel and a system circuit including:
  • An array substrate having a display area and a fan-out area, the display area having a plurality of spaced-apart signal lines, wherein the first signal line and the second signal line are at different height layers
  • the fan-out area has a plurality of traces.
  • the first trace and the second trace are on layers of different heights, and are insulated from each other by an insulating layer;
  • circuit board having a plurality of spaced-apart wires
  • Conductive particles one end of the trace in the fan-out region is electrically connected to the signal line, and the other end of the trace is electrically connected to a wire on the circuit board through the conductive particles.
  • connection structure further includes a flexible circuit board, wherein the flexible circuit board is provided with a plurality of spaced-apart wires; the other end of the trace passes through the conductive particles and the flexible circuit board The wires are electrically connected, and the wires on the flexible circuit board are electrically connected to the wires on the circuit board.
  • each of the signal lines is on the same line as another signal line adjacent thereto, or is alternately distributed on two lines.
  • the other end of the trace is electrically connected to the wire on the flexible circuit board through the conductive particles of the anisotropic conductive film.
  • the anisotropic conductive film has conductive particles of a single particle size, and the plurality of wires on the flexible circuit board are located on two different layers, and the adjacent two wires are located The layers are different.
  • anisotropic conductive film has conductive particles of two particle sizes, and the flexible circuit Multiple wires on the board are on the same layer.
  • the outer periphery of the conductive particles is wrapped with an insulating layer.
  • the adjacent two layers are stacked on top of each other or abutted to the left and right.
  • liquid crystal panel including:
  • An array substrate having a first electrode layer with a transistor and a first alignment layer covering the first electrode layer;
  • the first electrode layer of the array substrate has a display area and a fan-out area, and the display area a signal line having a plurality of spaced intervals, wherein the first signal line and the second signal line are located on layers of different heights;
  • the fan-out area has a plurality of traces, the first trace and the first The two traces are on layers of different heights and are insulated from each other by an insulating layer;
  • the inner side is provided with a second electrode layer and a second alignment layer covering the second electrode layer;
  • liquid crystal layer disposed between the first alignment layer and the second alignment layer
  • a first polarizing plate is disposed on an outer side of the array substrate, and a second polarizing plate is disposed on an outer side of the substrate.
  • the present disclosure provides a liquid crystal display device including the above liquid crystal panel, conductive particles, a flexible circuit board, and a circuit board, wherein the liquid crystal panel includes: an array substrate, and the inner side is provided with a first electrode layer of the transistor and a first alignment layer covering the first electrode layer; the first electrode layer of the array substrate has a display area and a fan-out area, and the display area has a plurality of signal lines arranged at intervals Among the plurality of signal lines, the first signal line and the second signal line are located on layers of different heights; the fan-out area has a plurality of traces, and the first trace and the second trace are at different height layers And being insulated from each other by an insulating layer; the substrate is provided with a second electrode layer and a second alignment layer covering the second electrode layer; a liquid crystal layer disposed on the first alignment layer and the second alignment layer A first polarizing plate is disposed on an outer side of the array substrate, and a second polarizing plate is disposed on an outer side of the substrate.
  • the flexible circuit board is provided with a plurality of spaced-apart wires, and the circuit board is also provided with a plurality of spaced-apart wires; the traces on the fan-out area of the liquid crystal panel pass through the conductive particles and the Electrical connections are made to the wires on the flexible circuit board, and the wires on the flexible circuit board are electrically connected to the wires on the circuit board.
  • connection structure of the display panel and the system circuit of the present disclosure the first signal line and the second signal line on the array substrate are located on different height layers, and the first trace and the second trace on the fan-out area are at different heights On the layer, a wiring structure which is staggered up and down is formed, which greatly increases the density of the wiring.
  • the present disclosure can achieve at least two-fold resolution integrated line requirements compared to the conventional wiring design; enabling a small-sized frame design of a small-sized display panel to achieve higher resolution.
  • FIG. 1 is a structural diagram of an array substrate and a flexible circuit board electrically connected by conductive particles of a single particle diameter according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a layout of a fan-out area on a matrix substrate according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of a left-right abutment layout of a fan-out area on an array substrate provided by an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a signal line on an array substrate provided on an array substrate according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a signal line on an array substrate provided on an array substrate according to an embodiment of the present disclosure
  • FIG. 6 is a longitudinal cross-sectional view of a liquid crystal panel according to an embodiment of the present disclosure.
  • FIG. 7 is a structural diagram of an array substrate and a flexible circuit board electrically connected by conductive particles of two particle sizes according to another embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a connection structure between a display panel and a system circuit, and the connection structure includes an array substrate 1, a flexible circuit board 2, conductive particles 3, and a circuit board. .
  • connection structure can be applied to various display panels, such as a liquid crystal panel, a semiconductor light emitting diode panel, an organic light emitting diode panel, or the like.
  • the array substrate 1 has a display area 11 and a fan-out area 12, and the fan-out area 12 is located at a frame position of the display panel.
  • the display area 11 has a plurality of spaced-apart signal lines 111.
  • the array substrate 1 is a TFT (Thin Film Transistor) array substrate, the signal line 111 and the source and the gate on the array substrate 1 (not shown)
  • the signal line 111 drives the source and the gate by acquiring the voltage and signal of the system circuit on the circuit board, thereby realizing the display function on the display area 11.
  • the display area 11 has a plurality of spaced-apart signal lines 111.
  • the plurality of signal lines 111 include a first signal line 111a and a second signal line 111b.
  • the first signal line 111a and the second signal line 111b are located differently.
  • the fan-out area 12 has a plurality of traces 121.
  • the plurality of traces 121 include a first trace 121a and a second trace 121b.
  • the first trace 121a and the second trace 121b are located on layers of different heights, and the phase
  • the adjacent traces 121 are insulated from each other by an insulating layer, and the traces 121 on the highest layer may not wrap or cover the insulating layer.
  • the following is exemplified by two signal lines 111 on two different height layers and two traces 121 on two different height layers.
  • the display area 11 has a plurality of spaced apart signal lines 111 on two different height layers, the fan-out area 12 having a plurality of traces 121 on two different height layers.
  • the upper and lower layers of the traces 121 may be stacked one on top of the other or close to the left and right. Referring to FIG. 2, when the two traces 121 are stacked one on another, the insulating layer is located on the top surface of the lower trace 121 and the bottom surface of the lower trace 121. between. Referring to FIG. 3, when the two traces 121 are close to each other, the insulating layer is located between the right side surface of the left trace 121 and the left side surface of the right trace 121.
  • the conductive particles 3 are conductive particles 3 on the anisotropic conductive film.
  • the flexible circuit board 2 is provided with a plurality of spaced-apart wires 21, and a plurality of spaced-apart wires 21 are disposed on the circuit board.
  • a flip chip is used as the flexible circuit board 2
  • the wire 21 is a copper line covering the flexible circuit board 2.
  • the other end of the trace 121 is electrically connected to the wire 21 on the flexible circuit board 2 through the conductive particles 3 of the anisotropic conductive film, and the wire 21 on the flexible circuit board 2 is electrically connected to the wire on the circuit board.
  • the system circuit is located on the circuit board, so that the connection structure of the embodiment realizes the electrical connection between the display panel and the system circuit.
  • Each signal line 111 is on the same line as another signal line 111 adjacent thereto, or is alternately distributed on two lines. Referring to FIG. 4, when all of the signal lines 111 are on the same line, the adjacent two signal lines 111 are alternately disposed on two layers of different heights. Referring to FIG. 5, when the signal lines 111 are distributed In two rows, the signal lines 111 of the same row are on the same level of the layer, and the signal lines 111 of the different rows are respectively disposed on the two layers of different heights.
  • the conductive particles 3 on the anisotropic conductive film are conductive particles 3 of a single particle size, and the plurality of wires 21 on the flexible circuit board 2 are located on two layers of different heights, and the adjacent two The layers in which the wires 21 are located are different.
  • the outer periphery of the conductive particles 3 is wrapped with the insulating layer 31, so that the conductive particles 3 can reach the requirements of fine pitch and low on-resistance without causing a short circuit.
  • the anisotropic conductive film When the anisotropic conductive film is subjected to a hot pressing process, the insulating layer between the conductive particles 3 in the vertical direction is partially broken, so that the wires 21 of the flexible circuit board 2 and the wiring 121 of the fan-out region 12 are A conductive path is formed between them.
  • the first signal line 111a and the second signal line 111b are located on layers of different heights, and multiple strips on the fan-out area 12 are In the line 121, the first trace 121a and the second trace 121b are located on layers of different heights, thereby forming an upper and lower staggered wiring structure, which greatly increases the density of the wiring.
  • the present embodiment can achieve at least twice the resolution integrated circuit requirement compared to the conventional wiring design; the medium and small size liquid crystal panel of the narrow bezel design can achieve higher resolution.
  • the embodiment further provides a liquid crystal panel 100 including an array substrate 1 , a substrate 5 , a liquid crystal layer 6 , a first polarizing plate 7 , and a second polarizing plate 8 .
  • the first electrode layer 13 with the transistor 10 and the first alignment layer 14 covering the first electrode layer 13 are disposed inside the array substrate 1.
  • the first electrode layer 13 of the array substrate 1 has a display area 11 and a fan-out area 12, and the display area 11 has a plurality of signal lines 111 arranged at intervals, among the plurality of signal lines 111.
  • a signal line 111a and a second signal line 111b are located on layers of different heights.
  • the fan-out area 12 has a plurality of traces 121.
  • the first traces 121a and the second traces 121b are on layers of different heights and are insulated from each other by an insulating layer.
  • Base The inner side of the plate 5 is provided with a second electrode layer 51 and a second alignment layer 52 covering the second electrode layer 51.
  • the liquid crystal layer 6 is disposed between the first alignment layer 14 and the second alignment layer 52; the first polarizing plate 7 is disposed outside the array substrate 1, and the second polarizing plate 8 is disposed outside the substrate 5.
  • the embodiment further provides a liquid crystal display device comprising the above liquid crystal panel and a backlight module 4 for providing an illumination source.
  • another embodiment of the present disclosure provides a connection structure between a display panel and a system circuit.
  • the plurality of wires 21 on the flexible circuit board 2 of the present embodiment are all located on the same height layer, since the wires 21 on one layer and the traces 121 on the two height layers on the array substrate 1 have two The distance, therefore, the anisotropic conductive film has two kinds of conductive particles 3a and conductive particles 3b, and the conductive particles 3a having a larger particle diameter are used to conduct the conductive wire 21 and the trace 121 having a larger distance, and the particles are The conductive particles 3b having a smaller diameter are used to conduct the conductors 21 having a smaller distance and the traces 121.
  • the first signal line 111a and the second signal line 111b on the array substrate 1 are located on layers of different heights, and the first trace 121a and the second trace 121b on the fan-out area.
  • the upper and lower staggered wiring structures are formed, which greatly increases the density of the wiring.
  • the present embodiment can achieve at least twice the resolution integrated circuit requirement compared to the conventional wiring design; the medium and small size liquid crystal panel of the narrow bezel design can achieve higher resolution.

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

Abstract

一种显示面板与系统电路的连接结构，连接结构包括阵列基板（1）、电路板及导电粒子（3）。阵列基板（1）的显示区域（11）具有多条间隔设置、位于不同高度的层上的第一信号线（111a）与第二信号线（111b）。扇出区域（12）具有多条位于不同高度的层上，并通过绝缘层相互绝缘的第一走线（121a）与第二走线（121b）。扇出区域（12）内的走线（121）的一端与信号线（111）电气连接，另一端通过导电粒子（3）与电路板上的导线（21）电气连接。还提供一种液晶面板和液晶显示装置。

Description

液晶显示装置及其面板、显示面板与系统电路的连接结构 技术领域
本公开涉及液晶显示器制造技术领域，尤其涉及一种液晶显示装置、液晶面板及显示面板与系统电路的连接结构。
背景技术
LCD(液晶显示器)的阵列基板上具有显示区域以及扇出区域，显示区域上集成有用于驱动显示区域上的源极与栅极的信号线路。扇出区域上布置有走线，走线始端与信号线焊接，走线末端通过接合异方性导电胶膜(ACF)与软性电路板上的导线实现电气连接，接着软性电路板与系统的电路板电气连接，从而实现了系统电路与显示区域的电气连接。其中，扇出区域的走线末端通过ACF的导电粒子的垂直导电原理与软性电路板上的导线构成连接电路。
一般扇出区域的走线末端的设计受限于ACF导电粒子的粒径、软性电路板导线之间的间距以及压合设备端的能力。目前，大尺寸LCD阵列基板上的布线多数设计成单排的布线架构，而中小尺寸的LCD阵列基板上集成线路密度较高，多为双排布线架构。但在更高分辨率规格与窄边框设计要求下，阵列基板上的信号线以及走线结构、软性电路板上的导线布局、ACF应用材料或者压合设备均需要更新设计来应付更高密度集成线路所面临的挑战。
公开内容
本公开所要解决的技术问题在于提供一种液晶显示装置、液晶面板及显示面板与系统电路的连接结构，旨在解决现有技术中的连接结构无法满足中小尺寸的LCD更高密度集成线路的布线问题。
本公开是这样实现的，一种显示面板与系统电路的连接结构，包括：
阵列基板，所述阵列基板具有显示区域以及扇出区域，所述显示区域具有多条间隔设置的信号线，所述多条信号线中，第一信号线与第二信号线位于不同高度的层上；所述扇出区域具有多条走线，所述的多条走线中，第一走线与第二走线位于不同高度的层上，并通过绝缘层相互绝缘；
电路板，所述电路板上设有多条间隔设置的导线；以及
导电粒子，所述扇出区域内的走线的一端与所述信号线电气连接，所述走线的另一端通过所述导电粒子与所述电路板上的导线电气连接。
进一步地，所述连接结构还包括软性电路板，所述软性电路板上设有多条间隔设置的导线；所述走线的另一端通过所述导电粒子与所述软性电路板上的导线电气连接，所述软性电路板上的导线与电路板上的导线电气连接。
进一步地，每一所述的信号线与其相邻的另一信号线位于同一行上，或者相交错地分布于两行上。
进一步地，所述走线的另一端通过异方性导电胶膜的导电粒子与所述软性电路板上的导线电气连接。
进一步地，所述异方性导电胶膜具有单种粒径的导电粒子，所述软性电路板上的多条导线位于两个不同的层上，并且，相邻的两条的导线所处的层不同。
进一步地，所述异方性导电胶膜具有两种粒径的导电粒子，所述软性电路 板上的多条导线均位于同一层上。
进一步地，所述导电粒子的外周缘包裹有绝缘层。
进一步地，相邻的两层走线上下叠置或者左右紧靠。
本公开为解决上述技术问题，还提供了一种液晶面板，包括：
阵列基板，内侧设有带有晶体管的第一电极层与覆盖所述第一电极层的第一配向层；所述阵列基板的第一电极层上具有显示区域以及扇出区域，所述显示区域具有多条间隔设置的信号线，所述多条信号线中，第一信号线与第二信号线位于不同高度的层上；所述扇出区域具有多条走线，第一走线与第二走线位于不同高度的层上，并通过绝缘层相互绝缘；
基板，内侧设有第二电极层与覆盖所述第二电极层的第二配向层；
液晶层，配置于所述第一配向层与所述第二配向层之间；
所述阵列基板的外侧设有第一偏光板，所述基板的外侧设有第二偏光板。
本公开为解决上述技术问题，还提供了一种液晶显示装置，包括上述的液晶面板、导电粒子、软性电路板以及电路板，其中，所述液晶面板包括：阵列基板，内侧设有带有晶体管的第一电极层与覆盖所述第一电极层的第一配向层；所述阵列基板的第一电极层上具有显示区域以及扇出区域，所述显示区域具有多条间隔设置的信号线，所述多条信号线中，第一信号线与第二信号线位于不同高度的层上；所述扇出区域具有多条走线，第一走线与第二走线位于不同高度的层上，并通过绝缘层相互绝缘；基板，内侧设有第二电极层与覆盖所述第二电极层的第二配向层；液晶层，配置于所述第一配向层与所述第二配向层之间；所述阵列基板的外侧设有第一偏光板，所述基板的外侧设有第二偏光板。 所述软性电路板上设有多条间隔设置的导线，所述电路板上亦设置有多条相间隔的导线；所述液晶面板的扇出区域上的走线通过所述导电粒子与所述软性电路板上的导线电气连接，所述软性电路板上的导线与所述电路板上的导线电气连接。
本公开的显示面板与系统电路的连接结构，其阵列基板上的第一信号线与第二信号线位于不同高度的层上，扇出区域上的第一走线与第二走线位于不同高度的层上，从而形成了上下交错的布线结构，大大地提高了布线的密度。在同样面积的布线区域，本公开相比于传统的布线设计至少可以达到两倍分辨率的集成线路要求；使得窄边框设计的中小尺寸的显示面板能够实现更高的分辨率。
附图说明
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1是本公开实施例提供的阵列基板与软性电路板通过单种粒径的导电粒子电连接的结构图；
图2是本公开实施例提供的阵列基板上的扇出区域的走线上下叠置布局的示意图；
图3是本公开实施例提供的阵列基板上的扇出区域的走线左右紧靠布局的示意图；
图4是本公开实施例提供的阵列基板上的信号线位于同一行上时的示意图；
图5是本公开实施例提供的阵列基板上的信号线位于两行上时的示意图；
图6是本公开实施例提供的一种液晶面板的纵向剖视示意图；
图7是本公开另一实施例提供的阵列基板与软性电路板通过两种粒径的导电粒子电连接的结构图。
具体实施方式
为了使本公开所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本公开进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本公开，并不用于限定本公开。
如图1至图5所示，为本公开的一实施例，提供了一种显示面板与系统电路的连接结构，该连接结构包括阵列基板1、软性电路板2、导电粒子3以及电路板。
该连接结构可应于多种显示面板内，例如：液晶面板、半导体发光二极管面板、有机发光二极管面板等。
阵列基板1具有显示区域11以及扇出区域12，扇出区域12位于显示面板的边框位置。显示区域11具有多条间隔设置的信号线111，本实施例中，阵列基板1为TFT(薄膜晶体管)阵列基板，信号线111与阵列基板1上的源极以及栅极(图中未示出)连接，信号线111通过获取电路板上的系统电路的电压以及信号，来驱动源极以及栅极，从而在显示区域11上实现显示功能。
显示区域11具多条间隔设置的信号线111，多条信号线111中包括第一信号线111a以及第二信号线111b，第一信号线111a与第二信号线111b位于不同 高度的层上。扇出区域12具有多条走线121，多条走线121中包括第一走线121a与第二走线121b，第一走线121a与第二走线121b位于不同高度的层上，并且相邻的走线121之间通过绝缘层相互绝缘，位于最高层上的走线121可以不包裹或者覆盖绝缘层。为了便于描述，下面以位于两个不同高度的层上的两条信号线111以及位于两个不同高度的层上的两条走线121进行举例说明。
显示区域11具有位于两个不同高度的层上的多条间隔设置的信号线111，扇出区域12具有位于两个不同高度的层上的多条走线121。上下两层的走线121可以上下叠置或者左右紧靠，请参见图2，当两条走线121上下叠置时，绝缘层位于下方走线121的顶面以及下方走线121的底面之间。请参见图3，当两条走线121左右紧靠时，绝缘层位于左侧走线121的右侧面与右侧走线121的左侧面之间。
所有信号线111的一端集中布置在一个区域内，形成焊接区112，信号线111的一端与走线121的一端于焊接区内焊接，从而实现两者的电气连接。上述导电粒子3为异方性导电胶膜上的导电粒子3。软性电路板2上设有多条间隔设置的导线21，电路板上设置有多条间隔设置的导线21。本实施例中，采用覆晶薄膜作为软性电路板2，导线21为覆盖于软性电路板2上的铜质线路。走线121的另一端通过异方性导电胶膜的导电子粒3与软性电路板2上的导线21电气连接，软性电路板2上的导线21与电路板上的导线电气连接。系统电路位于电路板上，从而，本实施例的连接结构实现了显示面板与系统电路的电气连接。
每一信号线111与其相邻的另一信号线111位于同一行上，或者相交错地分布于两行上。请参见图4，当所有信号线111均位于同一行上时，相邻的两条信号线111交错地设置于两个不同高度的层上。请参见图5，当信号线111分布于 两行上时，同一行的信号线111位于同一高度的层上，不同行的信号线111分别设置于不同高度的两层上。
异方性导电胶膜上的导电粒子3为单种粒径的导电粒子3，软性电路板2上的多条导线21位于两个不同高度的的层上，并且，相邻的两条的导线21所处的层不同。为了提高导电粒子3的密度，导电粒子3的外周缘包裹有绝缘层31，从而导电粒子3可以达到细间距以及低导通电阻的要求，同时又不会有短路的情形发生。当对异方性导电胶膜进行热压制程时，垂直方向上的导电粒子3之间的绝缘层会部分破裂，从而于软性电路板2的导线21与扇出区域12的走线121之间形成导电通路。
可见，本实施例提供的连接结构，其阵列基板1上的多条信号线111中，第一信号线111a与第二信号线111b位于不同高度的层上，扇出区域12上的多条走线121中，第一走线121a与第二走线121b位于不同高度的层上，从而形成了上下交错的布线结构，大大地提高了布线的密度。在同样面积的布线区域，本实施例相比于传统的布线设计至少可以达到两倍分辨率的集成线路要求；使得窄边框设计的中小尺寸的液晶面板能够实现更高的分辨率。
请参见图6，本实施例还提供了一种液晶面板100，包括阵列基板1、基板5、液晶层6、第一偏光板7以及第二偏光板8。阵列基板1内侧设有带有晶体管10的第一电极层13与覆盖第一电极层13的第一配向层14。请一同参见图1至图5，阵列基板1的第一电极层13上具有显示区域11以及扇出区域12，显示区域11具有多条间隔设置的信号线111，多条信号线111中，第一信号线111a与第二信号线111b位于不同高度的层上。扇出区域12具有多条走线121，第一走线121a与第二走线121b位于不同高度的层上，并通过绝缘层相互绝缘。基 板5的内侧设有第二电极层51与覆盖所述第二电极层51的第二配向层52。液晶层6配置于第一配向层14与所述第二配向层52之间；第一偏光板7设置于阵列基板1的外侧，第二偏光板8设置于基板5的外侧。
本实施例还提供一种液晶显示装置，包括上述的液晶面板以及用于提供照明光源的背光模组4。
请参见图7，为本公开的另一实施例，提供了一种显示面板与系统电路的连接结构。
本实施例的软性电路板2上的多条导线21均位于同一高度的层上，由于一个层上的导线21与阵列基板1上的两个高度的层上的走线121之间具有两个距离，因此，异方性导电胶膜具有两种粒径的导电粒子3a以及导电粒子3b，粒径较大的导电粒子3a用于给距离较大的导线21与走线121导电，而粒径较小的导电粒子3b则用于给距离较小的导线21与走线121导电。
可见，本实施例提供的连接结构，其阵列基板1上的第一信号线111a与第二信号线111b位于不同高度的层上，扇出区域上的第一走线121a与第二走线121b位于不同高度的层上，从而形成了上下交错的布线结构，大大地提高了布线的密度。在同样面积的布线区域，本实施例相比于传统的布线设计至少可以达到两倍分辨率的集成线路要求；使得窄边框设计的中小尺寸的液晶面板能够实现更高的分辨率。
以上所述仅为本公开的较佳实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本公开的保护范围之内。

Claims (16)

  1. 种显示面板与系统电路的连接结构，包括：
    阵列基板，所述阵列基板具有显示区域以及扇出区域，所述显示区域具有多条间隔设置的信号线，所述多条信号线中，第一信号线与第二信号线位于不同高度的层上；所述扇出区域具有多条走线，所述的多条走线中，第一走线与第二走线位于不同高度的层上，并通过绝缘层相互绝缘；
    电路板，所述电路板上设有多条间隔设置的导线；以及
    导电粒子，所述扇出区域内的走线的一端与所述信号线电气连接，所述走线的另一端通过所述导电粒子与所述电路板上的导线电气连接。
  2. 如权利要求1所述的显示面板与系统电路的连接结构，其中，所述连接结构还包括软性电路板，所述软性电路板上设有多条间隔设置的导线；所述走线的另一端通过所述导电粒子与所述软性电路板上的导线电气连接，所述软性电路板上的导线与电路板上的导线电气连接。
  3. 如权利要求1所述的显示面板与系统电路的连接结构，其中，每一所述的信号线与其相邻的另一信号线位于同一行上，或者相交错地分布于两行上。
  4. 如权利要求2所述的显示面板与系统电路的连接结构，其中，每一所述的信号线与其相邻的另一信号线位于同一行上，或者相交错地分布于两行上。
  5. 如权利要求2所述的显示面板与系统电路的连接结构，其中，所述走线的另一端通过异方性导电胶膜的导电粒子与所述软性电路板上的导线电气连接。
  6. 如权利要求5所述的显示面板与系统电路的连接结构，其中，所述异方性导电胶膜具有单种粒径的导电粒子，所述软性电路板上的多条导线位于两个不同的层上，并且，相邻的两条的导线所处的层不同。
  7. 如权利要求5所述的显示面板与系统电路的连接结构，其中，所述异方性导电胶膜具有两种粒径的导电粒子，所述软性电路板上的多条导线均位于同一层上
  8. 如权利要求6所述的显示面板与系统电路的连接结构，其中，所述导电粒子的外周缘包裹有绝缘层。
  9. 如权利要求7所述的显示面板与系统电路的连接结构，其中，所述导电粒子的外周缘包裹有绝缘层。
  10. 如权利要求1所述的显示面板与系统电路的连接结构，其中，相邻的两层走线上下叠置或者左右紧靠。
  11. 如权利要求2所述的显示面板与系统电路的连接结构，其中，相邻的两层走线上下叠置或者左右紧靠。
  12. 如权利要求5所述的显示面板与系统电路的连接结构，其中，相邻的两层走线上下叠置或者左右紧靠。
  13. 如权利要求6所述的显示面板与系统电路的连接结构，其中，相邻的两层走线上下叠置或者左右紧靠。
  14. 如权利要求7所述的显示面板与系统电路的连接结构，其中，相邻的两层走线上下叠置或者左右紧靠。
  15. 一种液晶面板，包括：
    阵列基板，内侧设有带有晶体管的第一电极层与覆盖所述第一电极层的第一配向层；所述阵列基板的第一电极层上具有显示区域以及扇出区域，所述显示区域具有多条间隔设置的信号线，所述多条信号线中，第一信号线与第二信 号线位于不同高度的层上；所述扇出区域具有多条走线，第一走线与第二走线位于不同高度的层上，并通过绝缘层相互绝缘；
    基板，内侧设有第二电极层与覆盖所述第二电极层的第二配向层；
    液晶层，配置于所述第一配向层与所述第二配向层之间；
    所述阵列基板的外侧设有第一偏光板，所述基板的外侧设有第二偏光板。
  16. 一种液晶显示装置，包括液晶面板及背光模组，其中，所述液晶面板包括：
    阵列基板，内侧设有带有晶体管的第一电极层与覆盖所述第一电极层的第一配向层；所述阵列基板的第一电极层上具有显示区域以及扇出区域，所述显示区域具有多条间隔设置的信号线，所述多条信号线中，第一信号线与第二信号线位于不同高度的层上；所述扇出区域具有多条走线，第一走线与第二走线位于不同高度的层上，并通过绝缘层相互绝缘；
    基板，内侧设有第二电极层与覆盖所述第二电极层的第二配向层；
    液晶层，配置于所述第一配向层与所述第二配向层之间；
    所述阵列基板的外侧设有第一偏光板，所述基板的外侧设有第二偏光板。
PCT/CN2017/102467 2016-12-30 2017-09-20 液晶显示装置及其面板、显示面板与系统电路的连接结构 Ceased WO2018120931A1 (zh)

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