WO2018112996A1 - 显示装置 - Google Patents

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Publication number
WO2018112996A1
WO2018112996A1 PCT/CN2016/112256 CN2016112256W WO2018112996A1 WO 2018112996 A1 WO2018112996 A1 WO 2018112996A1 CN 2016112256 W CN2016112256 W CN 2016112256W WO 2018112996 A1 WO2018112996 A1 WO 2018112996A1
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WO
WIPO (PCT)
Prior art keywords
flexible substrate
woa
display area
electrically connected
display device
Prior art date
Application number
PCT/CN2016/112256
Other languages
English (en)
French (fr)
Inventor
王刚
陈黎暄
Original Assignee
深圳市华星光电技术有限公司
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 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to KR1020197021204A priority Critical patent/KR102175780B1/ko
Priority to JP2019533204A priority patent/JP2020504324A/ja
Priority to EP16924257.5A priority patent/EP3561585B1/en
Priority to US15/503,705 priority patent/US10338421B2/en
Publication of WO2018112996A1 publication Critical patent/WO2018112996A1/zh

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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
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film
    • 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
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13454—Drivers integrated on the active matrix substrate
    • 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
    • G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • 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
    • G09G3/3406—Control of illumination source
    • 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/42—Arrangements for providing conduction through an insulating 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
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0404—Matrix technologies
    • G09G2300/0408—Integration of the drivers onto the display 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
    • 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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a display device.
  • LCD liquid crystal display
  • OLED organic light emitting display
  • a conventional liquid crystal display generally includes a display panel 100 , a source driving chip 200 electrically connected to an upper side of the display panel 100 , and a gate electrically connected to the left and right sides of the display panel 100 .
  • a driving chip 400, and a driving circuit board 300 electrically connected to the source driving chip 200 and the gate driving chip 400, the display panel 100 includes a display area 101, and a non-display area surrounding the display area 101 102.
  • the display area 101 is provided with a plurality of parallel horizontally arranged scanning lines and a plurality of vertically spaced source lines arranged in parallel.
  • the non-display area 102 is provided with a plurality of fan-shaped array substrates.
  • a wire Wire On Array, WOA
  • WOA Wire On Array
  • the plurality of scan lines are connected to the gate drive chip 400 through the WOA trace 500
  • the plurality of source lines are connected to the source drive chip 200
  • a gate driver chip Gate Driver on Array, GOA
  • GOA Gate Driver on Array
  • the GOA circuit is directly fabricated on the display panel. District Directly connected to the scan line, but the WOA trace 500 cannot be omitted at this time, and the drive circuit board 300 and the GOA circuit need to be electrically connected together by the WOA trace 500.
  • the width of the wire in the display panel is limited by the precision of the manufacturing equipment, the accuracy of the mask and the requirement of the conductivity, and the design of the edge non-display area is reduced by greatly reducing the width of the WOA trace. It is still difficult to do, so a new method is needed to reduce the width of the non-display area of the display panel.
  • the present invention provides a display device comprising: a flexible substrate, the flexible substrate comprising a display area, and a non-display area surrounding the display area;
  • a plurality of WOA traces electrically connected to the display area are disposed in the non-display area of the flexible substrate, and a driving signal is provided to the display area by the WOA trace;
  • the WOA traces are disposed on the front and back sides of the flexible substrate, wherein one end of the WOA trace disposed on the reverse side of the flexible substrate extends through the first via provided on the flexible substrate to the flexible substrate
  • the front side is connected to the driving signal, and the other end is extended to the display area by extending through a second via provided on the flexible substrate to a front surface of the flexible substrate.
  • the material of the flexible substrate is polyimide, polyethylene terephthalate, cyclic olefin copolymer, or polyether sulfone resin.
  • the flexible substrate has a thickness of 10 to 300 microns.
  • a driving circuit board and a source driving chip and a gate driving chip electrically connected to the driving circuit board;
  • the WOA traces are electrically connected to the source driving chip and the gate driving chip, respectively.
  • the display area is provided with a plurality of vertical source lines arranged in parallel, and a plurality of horizontal scanning lines arranged in parallel;
  • Each WOA trace is electrically connected to a source line or a scan line.
  • the device further includes a driving circuit board and a source driving chip electrically connected to the driving circuit board, wherein the WOA trace is electrically connected to the source driving chip and the driving circuit board;
  • a GOA circuit is further disposed in the non-display area, and the WOA trace is electrically connected to the display area via the GOA circuit.
  • the display area is provided with a plurality of vertical source lines arranged in parallel, and a plurality of horizontal scanning lines arranged in parallel;
  • Each WOA trace is electrically connected to a source line or electrically connected to a scan line via a GOA circuit.
  • the plurality of WOA traces are located on the same film layer, and the material of the WOA trace is copper.
  • the plurality of WOA traces are located in different layers separated by an insulating layer, and the material of the WOA trace is graphene.
  • the WOA trace disposed on the reverse side of the flexible substrate is further covered with a protective layer.
  • the invention also provides a display device comprising: a flexible substrate, the flexible substrate comprising a display area, and a non-display area surrounding the display area;
  • a plurality of WOA traces electrically connected to the display area are disposed in the non-display area of the flexible substrate, and a driving signal is provided to the display area by the WOA trace;
  • the WOA traces are disposed on the front and back sides of the flexible substrate, wherein one end of the WOA trace disposed on the reverse side of the flexible substrate extends through the first via provided on the flexible substrate to the flexible substrate
  • the front side is connected to the driving signal, and the other end is extended to the front surface of the flexible substrate to the front surface of the flexible substrate to be electrically connected to the display area;
  • the material of the flexible substrate is polyimide, polyethylene terephthalate, cyclic olefin copolymer, or polyether sulfone resin;
  • the flexible substrate has a thickness of 10 to 300 micrometers.
  • the present invention provides a display device which is prepared by using an ultra-thin flexible substrate, wherein WOA traces are distributed on both sides of the flexible substrate, and the front WOA trace is directly connected to the display area, and the reverse side
  • the WOA traces are connected to the display area through the vias extending through the flexible substrate to the front side of the flexible substrate, thereby greatly improving the space utilization of the circuit, so that the substrate area of the same area can carry nearly twice the area of the circuit structure, Reduce the width of the non-display area of the edge to achieve borderless or ultra-narrow border display.
  • FIG. 1 is a schematic structural view of a conventional liquid crystal display device
  • FIG. 2 is a schematic structural view of a first embodiment of a display device of the present invention.
  • FIG. 3 is a schematic structural view of a second embodiment of a display device of the present invention.
  • Figure 4 is a cross-sectional view showing a non-display area of the display device of the present invention.
  • FIG. 5 is a plan view showing a non-display area of a conventional liquid crystal display device
  • Figure 6 is a plan view of a non-display area of the display device of the present invention.
  • the present invention provides a display device comprising: a flexible substrate 1 including a display area 11 and a non-display area 12 surrounding the display area 11;
  • a plurality of WOA traces 13 electrically connected to the display area 11 are disposed in the non-display area 12 of the flexible substrate 1 , and a driving signal is provided to the display area 11 through the WOA traces 13 ;
  • the WOA traces 13 are disposed on the front and back sides of the flexible substrate 1.
  • the WOA traces 13 disposed on the front surface of the flexible substrate 1 are electrically connected by a prior art.
  • the area 11 provides a driving signal for the display area 11, and one end of the WOA trace 13 disposed on the reverse side of the flexible substrate 1 extends through the first via 14 provided in the flexible substrate 1 to the front side of the flexible substrate 1.
  • the driving signal is inserted into the second via 15 disposed on the flexible substrate 1 to extend to the front surface of the flexible substrate 1 to be electrically connected to the display region 11.
  • the flexible substrate 1 used in the present invention is polyimide (PI), polyethylene terephthalate (PET), and is different from the glass substrate having a thickness between 0.3 and 0.7 mm.
  • a thin substrate of a material such as a cyclic olefin copolymer (COC) or a polyether sulfone resin (PES), having a thickness ranging from 10 to 300 um, and opening a first via hole on the flexible substrate by laser drilling or the like 14 and the second via hole 15, then forming a wire in the first via hole 14 and the second via hole 15, completing the circuit layout of the WOA trace 13 on the reverse side of the flexible substrate 1, since the thickness of the flexible substrate 1 is thin, thereby The process of forming the wires formed in the first via hole 14 and the second via hole 15 is better.
  • the plurality of WOA traces 13 may be located in the same film layer or may be located in different film layers separated by an insulating layer.
  • the WOA trace 13 is made of a material having excellent conductivity such as copper (Cu), and when a plurality of WOA traces 13 are located on different layers separated by an insulating layer, the present invention can select copper (Cu) or the like.
  • WOA traces 13 can be made of materials with excellent electrical conductivity.
  • WOA traces 13 can also be made of materials with lower resistivity such as graphene/common metal. Insulation is also formed between WOA traces 13 located in different layers. In this case, the taper angle of the first via hole 14 and the second via hole 15 should not be too large to ensure the film forming quality of the multilayer film layer and prevent film formation defects.
  • the WOA trace 13 on the reverse side of the flexible substrate 1 is further covered with a protective layer (not shown), the protective layer
  • the material may be a protective material such as silicon oxide (SiOx).
  • the present invention is provided by placing a part of the plurality of WOA traces 13 on the front surface of the flexible substrate 1 and another portion on the reverse side of the flexible substrate 1, and then by playing on the flexible substrate 1.
  • the hole extends the WOA trace 13 on the reverse side of the flexible substrate 1 to the front side of the flexible substrate 1, thereby improving the space utilization of the circuit of the WOA trace 13, so that the flexible substrate 1 region of the same area can carry a circuit structure of nearly twice the area. , greatly reducing the edge non-display area
  • the width of 12 makes it possible to design a borderless or ultra-narrow bezel.
  • the display device of the present invention further includes a driving circuit board 2, and a source driving chip 3 and a gate driving chip 4 electrically connected to the driving circuit board 2.
  • the WOA traces 13 and the respectively The source driving chip 3 and the gate driving chip 4 are electrically connected.
  • the display area 11 is provided with a plurality of vertical source lines arranged in parallel, and a plurality of horizontal scanning lines arranged in parallel.
  • a WOA trace 13 is electrically connected to a source line or a scan line.
  • the data signal (Data) provided by the source driver chip 3 is input to the source line through the WOA trace 13 to drive the gate.
  • the scan signal (Gate) provided by the chip 4 is supplied to the scan line to realize picture display, and the source drive chip 3 and the gate drive chip 4 are both based on the low voltage differential signal provided by the drive circuit board 2 (Low-Voltage) Differential Signaling (LVDS) generates corresponding data signals and scan signals, respectively.
  • LVDS Low-Voltage Differential Signaling
  • the display device of the present invention may further adopt a GOA technology.
  • the display device further includes a driving circuit board 2, and a source driving chip 3 electrically connected to the driving circuit board 2, the WOA.
  • the trace 13 is electrically connected to the source driving chip 3 and the driving circuit board 2;
  • the non-display area 12 is further provided with a GOA circuit 4', and the WOA trace 13 is electrically connected via the GOA circuit 4' Connected to the display area 11, the display area 11 is provided with a plurality of vertically spaced source lines arranged in parallel, and a plurality of parallel horizontally arranged scan lines; each of the WOA traces 13 corresponds to electrical properties.
  • the GOA circuit 4' Connect a source line or electrically connect a scan line via the GOA circuit 4', and input the data signal provided by the source drive chip 3 to the source line through the WOA trace 13 to drive the LVDS provided by the circuit board 4.
  • the signal is supplied to the GOA circuit 4', and a corresponding scan signal is generated by the GOA circuit 4' to the respective scan lines.
  • the GOA circuit 4' includes a plurality of GOA units connected in one-to-one correspondence with the plurality of scan lines.
  • the present invention provides a display device which is prepared by using an ultra-thin flexible substrate.
  • the WOA traces are distributed on the front and back sides of the flexible substrate, and the front WOA traces are directly connected to the display area, and the reverse side is
  • the WOA trace is connected to the display area through the via extending through the flexible substrate to the front surface of the flexible substrate, thereby greatly improving the space utilization of the circuit, so that the substrate area of the same area can carry a circuit structure of nearly twice the area, and the circuit structure is greatly reduced.
  • the width of the non-display area on the edge enables borderless or ultra-narrow border display.

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

Abstract

一种显示装置，该显示装置采用超薄的柔性基板(1)制备，其WOA走线(13)分布于柔性基板(1)的正反两面，正面的WOA走线(13)直接与显示区(11)相连，反面的WOA走线(13)通过贯穿所述柔性基板(1)的过孔(14、15)延伸至柔性基板(1)的正面与显示区(11)相连，从而大幅提高电路的空间利用率，使得相同面积的基板区域可以承载近乎两倍面积的电路结构，大幅降低边缘非显示区(12)的宽度，实现无边框或超窄边框显示。

Description

显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种显示装置。
背景技术
随着显示技术的发展，液晶显示器(Liquid Crystal Display，LCD)与有机发光二极管显示装置(Organic Light Emitting Display，OLED)等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点，而被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品，成为显示装置中的主流。
请参阅图1，现有的液晶显示器通常包括：显示面板100、电性连接于所述显示面板100上侧的源极驱动芯片200、电性连接于所述显示面板100左右两侧的栅极驱动芯片400，以及与所述源极驱动芯片200以及栅极驱动芯片400均电性连接的驱动电路板300，所述显示面板100包括显示区101、以及包围所述显示区101的非显示区102，所述显示区101内设有多条平行间隔排列的水平的扫描线和多条平行间隔排列的竖直的源极线，所述非显示区102设有多条扇形排列的阵列基板走线(Wire On Array，WOA)500，通过所述WOA走线500将所述多条扫描线连接至所述栅极驱动芯片400，将所述多条源极线连接至源极驱动芯片200；此外，随着显示技术的发展，现有技术中，还可以采用阵列基板行驱动电路(Gate Driver on Array，GOA)来取代栅极驱动芯片，此时GOA电路被直接制作在显示面板的非显示区上并直接连接至扫描线，但此时WOA走线500也不可省去，需要用WOA走线500将所述驱动电路板300与GOA电路电性连接到一起。
随着显示器的发展，超窄边框或者无边框渐渐成为一种趋势，不论LCD还是OLED，窄边框或无边框显示都可以带来更好的外观体验，然而，由于显示面板的显示区外围存在无法省去的WOA走线，导致显示面板的显示区到边缘的距离增大，使得无边框或者超窄边框的实现变得困难。尤其，当显示面板的分辨率从高清上升到超高清或者更高时，需要更多的区域用来放置WOA走线，导致边框区域缩窄更加困难。在现有的技术条件下，显示面板中的导线宽度受制于制作设备的精度，掩膜板精度以及对电导率的要求，通过大幅降低WOA走线的宽度来缩减边缘非显示区的设计方案目前还很难做到，因此需要一种新的方法来减少显示面板非显示区的宽度。
发明内容
本发明的目的在于提供一种显示装置，能够减少WOA走线所需要的布线面积，降低非显示区的面积，实现超窄边框或无边框显示。
为实现上述目的，本发明提供了一种显示装置，包括：柔性基板，所述柔性基板包括显示区、以及包围所述显示区的非显示区；
所述柔性基板的非显示区内设有多条与所述显示区电性连接的WOA走线，通过所述WOA走线向所述显示区提供驱动信号；
所述WOA走线设于所述柔性基板的正反两面，其中，设于所述柔性基板反面的WOA走线一端穿过设于所述柔性基板的第一过孔延伸至所述柔性基板的正面接入驱动信号，另一端穿过设于所述柔性基板的第二过孔延伸至所述柔性基板的正面电性连接至显示区。
所述柔性基板的材料为聚酰亚胺、聚对苯二甲酸乙二醇酯、环烯烃共聚物、或者聚醚砜树脂。
所述柔性基板的厚度为10至300微米。
还包括驱动电路板、以及与所述驱动电路板电性连接的源极驱动芯片和栅极驱动芯片；
所述WOA走线分别与所述源极驱动芯片及栅极驱动芯片电性连接。
所述显示区内设有多条平行间隔排列的竖直的源极线、以及多条平行间隔排列的水平的扫描线；
每一条WOA走线均对应电性连接一条源极线或一条扫描线。
还包括驱动电路板、以及与所述驱动电路板电性连接的源极驱动芯片，所述WOA走线与所述源极驱动芯片以及驱动电路板均电性连接；
所述非显示区内还设有GOA电路，所述WOA走线经由所述GOA电路电性连接至显示区。
所述显示区内设有多条平行间隔排列的竖直的源极线、以及多条平行间隔排列的水平的扫描线；
每一条WOA走线均对应电性连接一条源极线或经由GOA电路电性连接一条扫描线。
所述多条WOA走线位于同一膜层，所述WOA走线的材料为铜。
所述多条WOA走线位于由绝缘层分隔开的不同膜层，所述WOA走线的材料为石墨烯。
所述设于所述柔性基板反面的WOA走线上还覆盖有保护层。
本发明还提供一种显示装置，包括：柔性基板，所述柔性基板包括显 示区、以及包围所述显示区的非显示区；
所述柔性基板的非显示区内设有多条与所述显示区电性连接的WOA走线，通过所述WOA走线向所述显示区提供驱动信号；
所述WOA走线设于所述柔性基板的正反两面，其中，设于所述柔性基板反面的WOA走线一端穿过设于所述柔性基板的第一过孔延伸至所述柔性基板的正面接入驱动信号，另一端穿过设于所述柔性基板的第二过孔延伸至所述柔性基板的正面电性连接至显示区；
其中，所述柔性基板的材料为聚酰亚胺、聚对苯二甲酸乙二醇酯、环烯烃共聚物、或者聚醚砜树脂；
其中，所述柔性基板的厚度为10至300微米。
本发明的有益效果：本发明提供一种显示装置，该显示装置采用超薄的柔性基板制备，其WOA走线分布于柔性基板的正反两面，正面的WOA走线直接与显示区相连，反面的WOA走线通过贯穿所述柔性基板的过孔延伸至柔性基板的正面与显示区相连，从而大幅提高电路的空间利用率，使得相同面积的基板区域可以承载近乎两倍面积的电路结构，大幅降低边缘非显示区的宽度，实现无边框或超窄边框显示。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为现有的液晶显示装置的结构示意图；
图2为本发明的显示装置的第一实施例的结构示意图；
图3为本发明的显示装置的第二实施例的结构示意图；
图4为本发明的显示装置的非显示区的剖面图；
图5为现有的液晶显示装置的非显示区的俯视图；
图6为本发明的显示装置的非显示区的俯视图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图2或图3，本发明提供一种显示装置，包括：柔性基板1，所述柔性基板1包括显示区11、以及包围所述显示区11的非显示区12；
所述柔性基板1的非显示区12内设有多条与所述显示区11电性连接的WOA走线13，通过所述WOA走线13向所述显示区11提供驱动信号；
请参阅图4，所述WOA走线13设于所述柔性基板1的正反两面，其中，设于柔性基板1正面的WOA走线13采用现有技术的走线方式，直接电性连接显示区11为显示区11提供驱动信号，而设于所述柔性基板1反面的WOA走线13一端穿过设于所述柔性基板1的第一过孔14延伸至所述柔性基板1的正面接入驱动信号，另一端穿过设于所述柔性基板1的第二过孔15延伸至所述柔性基板1的正面电性连接至显示区11。
具体地，区别于现有技术采用的厚度在0.3至0.7mm间的玻璃基板，本发明采用的柔性基板1为聚酰亚胺(PI)、聚对苯二甲酸乙二醇酯(PET)、环烯烃共聚物(COC)、或聚醚砜树脂(PES)等材质的较薄的基板，厚度范围在10—300um之间，利用激光打孔等方式在所述柔性基板上开设第一过孔14与第二过孔15，接着在第一过孔14、及第二过孔15内形成导线，完成柔性基板1反面的WOA走线13的电路布局，由于柔性基板1的厚度较薄，从而使得形成在第一过孔14、及第二过孔15内的导线的制程效果较好。
需要说明的是，所述多条WOA走线13可以位于同一膜层，也可以位于由绝缘层分隔开的不同膜层，当所述多条WOA走线13位于同一膜层时，本发明优选采用铜(Cu)等导电率优良的材料来制作WOA走线13，而当多条WOA走线13位于由绝缘层分隔开的不同膜层时，本发明既可以选择铜(Cu)等导电率优良的材料来制作WOA走线13，也可以选用石墨烯/常见金属等电阻率较低的材料来制作WOA走线13，由于位于不同膜层的WOA走线13之间还形成有绝缘层，此时，第一过孔14与第二过孔15的台阶(Taper)角不能太大，以保证多层膜层的成膜质量，防止成膜不良。
值得一提的是，为了对柔性基板1反面的WOA走线13进行保护，此时，在柔性基板1反面的WOA走线13上还覆盖有一层保护层(未图示)，该保护层的材料可以为氧化硅(SiOx)等具有保护作用的材料。
进一步地，请参阅图5及图6，如图5所示，现有技术中所有的WOA走线500均位于基板的同一面，其占用的布线面积较大，需要的非显示区宽度较大，而如图6所示，本发明通过将多条WOA走线13中的一部分设于的柔性基板1的正面，而另一部分设于的柔性基板1的反面，再通过在柔性基板1上打孔，将柔性基板1反面的WOA走线13延伸至柔性基板1的正面，从而提高WOA走线13的电路的空间利用率，使得相同面积的柔性基板1区域可以承载近乎两倍面积的电路结构，大幅降低边缘非显示区 12的宽度，使无边框或超窄边框设计变为可能。
请参阅图2，本发明的显示装置还包括驱动电路板2、以及与所述驱动电路板2电性连接的源极驱动芯片3和栅极驱动芯片4，所述WOA走线13分别与所述源极驱动芯片3及栅极驱动芯片4电性连接，所述显示区11内设有多条平行间隔排列的竖直的源极线、以及多条平行间隔排列的水平的扫描线，每一条WOA走线13均对应电性连接一条源极线或一条扫描线，通过所述WOA走线13将所述源极驱动芯片3提供的数据信号(Data)输入源极线，将栅极驱动芯片4提供的扫描信号(Gate)提供给扫描线，从而实现画面显示，而所述源极驱动芯片3和栅极驱动芯片4均根据所述驱动电路板2提供的低压差分信号(Low-Voltage Differential Signaling，LVDS)分别产生相应的数据信号和扫描信号。
请参阅图3，本发明的显示装置还可以采用GOA技术，此时所述显示装置还包括驱动电路板2、以及与所述驱动电路板2电性连接的源极驱动芯片3，所述WOA走线13与所述源极驱动芯片3以及驱动电路板2均电性连接；所述非显示区12内还设有GOA电路4’，所述WOA走线13经由所述GOA电路4’电性连接至显示区11，所述显示区11内设有多条平行间隔排列的竖直的源极线、以及多条平行间隔排列的水平的扫描线；每一条WOA走线13均对应电性连接一条源极线或经由GOA电路4’电性连接一条扫描线，通过所述WOA走线13将所述源极驱动芯片3提供的数据信号输入源极线，将驱动电路板4提供的LVDS信号提供给GOA电路4’，再通过GOA电路4’产生相应的扫描信号给各个扫描线，所述GOA电路4’包括与所述多个扫描线一一对应相连的多个GOA单元。
综上所述，本发明提供一种显示装置，该显示装置采用超薄的柔性基板制备，其WOA走线分布于柔性基板的正反两面，正面的WOA走线直接与显示区相连，反面的WOA走线通过贯穿所述柔性基板的过孔延伸至柔性基板的正面与显示区相连，从而大幅提高电路的空间利用率，使得相同面积的基板区域可以承载近乎两倍面积的电路结构，大幅降低边缘非显示区的宽度，实现无边框或超窄边框显示。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (18)

  1. 一种显示装置，包括：柔性基板，所述柔性基板包括显示区、以及包围所述显示区的非显示区；
    所述柔性基板的非显示区内设有多条与所述显示区电性连接的WOA走线，通过所述WOA走线向所述显示区提供驱动信号；
    所述WOA走线设于所述柔性基板的正反两面，其中，设于所述柔性基板反面的WOA走线一端穿过设于所述柔性基板的第一过孔延伸至所述柔性基板的正面接入驱动信号，另一端穿过设于所述柔性基板的第二过孔延伸至所述柔性基板的正面电性连接至显示区。
  2. 如权利要求1所述的显示装置，其中，所述柔性基板的材料为聚酰亚胺、聚对苯二甲酸乙二醇酯、环烯烃共聚物、或者聚醚砜树脂。
  3. 如权利要求1所述的显示装置，其中，所述柔性基板的厚度为10至300微米。
  4. 如权利要求1所述的显示装置，还包括驱动电路板、以及与所述驱动电路板电性连接的源极驱动芯片和栅极驱动芯片；
    所述WOA走线分别与所述源极驱动芯片及栅极驱动芯片电性连接。
  5. 如权利要求4所述的显示装置，其中，所述显示区内设有多条平行间隔排列的竖直的源极线、以及多条平行间隔排列的水平的扫描线；
    每一条WOA走线均对应电性连接一条源极线或一条扫描线。
  6. 如权利要求1所述的显示装置，还包括驱动电路板、以及与所述驱动电路板电性连接的源极驱动芯片，所述WOA走线与所述源极驱动芯片以及驱动电路板均电性连接；
    所述非显示区内还设有GOA电路，所述WOA走线经由所述GOA电路电性连接至显示区。
  7. 如权利要求6所述的显示装置，其中，所述显示区内设有多条平行间隔排列的竖直的源极线、以及多条平行间隔排列的水平的扫描线；
    每一条WOA走线均对应电性连接一条源极线或经由GOA电路电性连接一条扫描线。
  8. 如权利要求1所述的显示装置，其中，所述多条WOA走线位于同一膜层，所述WOA走线的材料为铜。
  9. 如权利要求1所述的显示装置，其中，所述多条WOA走线位于由绝缘层分隔开的不同膜层，所述WOA走线的材料为石墨烯。
  10. 如权利要求1所述的显示装置，其中，所述设于所述柔性基板反面的WOA走线上还覆盖有保护层。
  11. 一种显示装置，包括：柔性基板，所述柔性基板包括显示区、以及包围所述显示区的非显示区；
    所述柔性基板的非显示区内设有多条与所述显示区电性连接的WOA走线，通过所述WOA走线向所述显示区提供驱动信号；
    所述WOA走线设于所述柔性基板的正反两面，其中，设于所述柔性基板反面的WOA走线一端穿过设于所述柔性基板的第一过孔延伸至所述柔性基板的正面接入驱动信号，另一端穿过设于所述柔性基板的第二过孔延伸至所述柔性基板的正面电性连接至显示区；
    其中，所述柔性基板的材料为聚酰亚胺、聚对苯二甲酸乙二醇酯、环烯烃共聚物、或者聚醚砜树脂；
    其中，所述柔性基板的厚度为10至300微米。
  12. 如权利要求11所述的显示装置，还包括驱动电路板、以及与所述驱动电路板电性连接的源极驱动芯片和栅极驱动芯片；
    所述WOA走线分别与所述源极驱动芯片及栅极驱动芯片电性连接。
  13. 如权利要求12所述的显示装置，其中，所述显示区内设有多条平行间隔排列的竖直的源极线、以及多条平行间隔排列的水平的扫描线；
    每一条WOA走线均对应电性连接一条源极线或一条扫描线。
  14. 如权利要求11所述的显示装置，还包括驱动电路板、以及与所述驱动电路板电性连接的源极驱动芯片，所述WOA走线与所述源极驱动芯片以及驱动电路板均电性连接；
    所述非显示区内还设有GOA电路，所述WOA走线经由所述GOA电路电性连接至显示区。
  15. 如权利要求14所述的显示装置，其中，所述显示区内设有多条平行间隔排列的竖直的源极线、以及多条平行间隔排列的水平的扫描线；
    每一条WOA走线均对应电性连接一条源极线或经由GOA电路电性连接一条扫描线。
  16. 如权利要求11所述的显示装置，其中，所述多条WOA走线位于同一膜层，所述WOA走线的材料为铜。
  17. 如权利要求11所述的显示装置，其中，所述多条WOA走线位于由绝缘层分隔开的不同膜层，所述WOA走线的材料为石墨烯。
  18. 如权利要求11所述的显示装置，其中，所述设于所述柔性基板反面的WOA走线上还覆盖有保护层。
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