WO2020113848A1 - 一种弯折区走线结构及其显示装置 - Google Patents

一种弯折区走线结构及其显示装置 Download PDF

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Publication number
WO2020113848A1
WO2020113848A1 PCT/CN2019/078507 CN2019078507W WO2020113848A1 WO 2020113848 A1 WO2020113848 A1 WO 2020113848A1 CN 2019078507 W CN2019078507 W CN 2019078507W WO 2020113848 A1 WO2020113848 A1 WO 2020113848A1
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WIPO (PCT)
Prior art keywords
signal line
metal layer
protective layer
organic protective
line unit
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Ceased
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PCT/CN2019/078507
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English (en)
French (fr)
Inventor
李雪
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US16/342,536 priority Critical patent/US10811486B2/en
Publication of WO2020113848A1 publication Critical patent/WO2020113848A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/17—Passive-matrix OLED displays
    • H10K59/179—Interconnections, e.g. wiring lines or terminals
    • 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]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present disclosure relates to the field of liquid crystal display, and particularly to a routing structure of a bending area and a display device thereof.
  • organic light emitting diode Organic Light Emitting Display, OLED
  • OLED Organic Light Emitting Display
  • the emerging "full-screen” design has become mainstream, which puts narrower requirements on the four borders of the panel.
  • the width of the bottom will be larger than the other three sides, mainly due to the integrated circuit (Intergrated Cricuit, IC) and flexible printed circuit board (Flexible Print Circuit (FPC) driver, which is not conducive to the realization of "full screen” design.
  • integrated circuit Intergrated Cricuit, IC
  • FPC Flexible Print Circuit
  • the design of the wiring in the bending area needs to have strong anti-bending performance, otherwise, in the bending process, the wiring will break, lose functionality, and affect the driving of the display panel.
  • the metal traces in the bending area of the existing flexible display device have poor bending resistance and are prone to breakage. Therefore, it is necessary to provide a flexible display device bending area wiring structure to improve this defect.
  • the present disclosure provides a wiring structure in a bending area, which is used to solve the problems of poor bending resistance and easy breakage of the metal wiring in the bending area in the prior art.
  • the present disclosure provides a routing structure for a bending area, the routing structure includes a substrate;
  • a first organic protective layer, the first organic protective layer is disposed on the substrate;
  • a first metal layer is disposed on the first organic protective layer, the first metal layer includes a plurality of signal line units arranged at intervals, the signal line unit is composed of at least two parallel The signal line is composed of adjacent signal lines connected to each other;
  • a second organic protective layer which is disposed on the first metal layer and in the gap between the signal lines.
  • any two adjacent connection portions in the signal line unit are arranged in a misaligned manner.
  • the signal lines disposed in the same signal line unit are connected to each other at both ends of the first organic protective layer, and the signal lines disposed in the same signal line unit are all Transmit the same signal.
  • the trace structure further includes a second metal layer and a third organic protective layer.
  • the second metal layer is disposed on the first metal layer
  • the third organic protective layer is disposed between the first metal layer and the second metal layer and disposed on the In the gap between the signal lines.
  • the third organic protective layer is provided with a via, and the first metal layer and the second metal layer are connected through the via to form the same signal line unit.
  • the signal lines provided in the same signal line unit are connected to each other at both ends of the first organic protective layer and the third organic protective layer.
  • the trace structure further includes a barrier layer, and the barrier layer is disposed between the substrate and the first organic protective layer.
  • the wiring structure satisfies that 15 ⁇ m ⁇ a ⁇ 20 ⁇ m, 9 ⁇ m ⁇ b ⁇ 15 ⁇ m, 3 ⁇ m ⁇ c ⁇ 5 ⁇ m, and 3 ⁇ m ⁇ d ⁇ 5 ⁇ m;
  • a is the distance between one side of the signal line unit and the same side of the adjacent signal line unit
  • b is the width of the signal line unit
  • c is the width of the signal line
  • d is the adjacent signal The interval width of the line.
  • the present disclosure provides a display device including a routing structure in a bending region, the routing structure includes:
  • a first organic protective layer, the first organic protective layer is disposed on the substrate;
  • a first metal layer is disposed on the first organic protective layer, the first metal layer includes a plurality of signal line units arranged at intervals, the signal line unit is composed of at least two parallel The signal line is composed of adjacent signal lines connected to each other;
  • a second organic protective layer which is disposed on the first metal layer and in the gap between the signal lines.
  • connection portions of any two adjacent signal lines in the signal line unit are arranged in a misaligned manner.
  • the signal lines disposed in the same signal line unit are connected to each other at both ends of the first organic protective layer, and the signal lines disposed in the same signal line unit are all Transmit the same signal.
  • the trace structure further includes a second metal layer and a third organic protective layer.
  • the second metal layer is disposed on the first metal layer
  • the third organic protective layer is disposed between the first metal layer and the second metal layer and disposed on the In the gap between the signal lines.
  • the third organic protective layer is provided with a via, and the first metal layer and the second metal layer are connected through the via to form the same signal line unit.
  • the signal lines provided in the same signal line unit are connected to each other at both ends of the first organic protective layer and the third organic protective layer.
  • the trace structure further includes a barrier layer, and the barrier layer is disposed between the substrate and the first organic protective layer.
  • the wiring structure satisfies that 15 ⁇ m ⁇ a ⁇ 20 ⁇ m, 9 ⁇ m ⁇ b ⁇ 15 ⁇ m, 3 ⁇ m ⁇ c ⁇ 5 ⁇ m, and 3 ⁇ m ⁇ d ⁇ 5 ⁇ m;
  • a is the distance between one side of the signal line unit and the same side of the adjacent signal line unit
  • b is the width of the signal line unit
  • c is the width of the signal line
  • d is the adjacent signal The interval width of the line.
  • the present disclosure design a single signal line as multiple parallel signal lines, and the parallel signal lines are provided with horizontal connections, and the two ends of the signal lines are connected to each other to achieve the same signal in a signal line unit
  • the transmission between multiple signal lines at the end of the signal line unit further ensures the safety and stability of signal transmission.
  • organic protective layers are provided at both ends of the signal line to protect the metal layer where the signal line is located. The bending resistance of the bending area of the flexible display device is improved.
  • Figure 1 is a schematic diagram of the wiring structure of the bending area
  • FIG. 2 is a cross-sectional view of the wiring structure of the bending area along the A-A direction;
  • Figure 3 is a schematic diagram of the second type of wiring structure design in the bending area
  • Figure 5 is a schematic diagram of the second type of wiring structure in the bending area
  • FIG. 6 is a cross-sectional view of the second wiring structure along the B-B direction in the bending area.
  • FIG. 1 is a schematic diagram of a routing structure of a bending region provided by this embodiment.
  • the routing structure includes a first metal layer 101 and a first organic protective layer 102.
  • the first metal layer 101 is disposed on the first organic protective layer 102 on.
  • the first metal layer 101 includes a plurality of signal line units 104 arranged at intervals, and the signal line unit 104 is composed of at least two signal lines arranged parallel to each other.
  • the signal line unit 104 is composed of three signal lines 105 arranged in parallel to each other, and a horizontal connection perpendicular to the signal line direction is provided between the three signal lines 105, and any two of the signal line units are adjacent The horizontal connection parts are all misaligned.
  • the three signal lines 105 disposed in the same signal line unit 104 are connected to each other at both ends of the first organic protective layer 102 along the signal line routing direction to form an edge unit 103.
  • This design can satisfy a signal to be transmitted between three signal lines. When one of the signal lines breaks, the signal can be transmitted through the other two signal lines, and it is aggregated at the end of the signal line unit to transmit the signal to the display device.
  • the effective display area further ensures the signal transmission.
  • a is the distance between the signal line unit 104 side and the adjacent side of the signal line unit 104
  • b is the width of the signal line unit 104
  • c is the width of the signal line 105
  • d is adjacent The interval width of the two signal lines 105.
  • the distance between two adjacent signal lines 105 is equal
  • the distance between two adjacent signal line units 104 is also equal
  • the size of the wiring structure satisfies: 15 ⁇ m ⁇ a ⁇ 20 ⁇ m, 9 ⁇ m ⁇ b ⁇ 15 ⁇ m, 3 ⁇ m ⁇ c ⁇ 5 ⁇ m, 3 ⁇ m ⁇ d ⁇ 5 ⁇ m.
  • the routing structure of the bending area further includes a substrate 201, a barrier layer 202 and a second organic protective layer 203.
  • the barrier layer 202 is disposed on the substrate 201
  • the first organic protective layer 102 is disposed on the barrier layer 202
  • the second organic protective layer 203 is disposed on the first metal layer 101 and disposed in the gap between the signal lines 105.
  • organic protective layers are provided above and below the first metal layer 101 for protection, which further improves the bending resistance of the metal traces in the bending area.
  • the signal line 105 is a composite structure in which Ti/AI/Ti three layers of metal are sequentially stacked, and a barrier layer 202 is provided between the substrate 201 and the first organic protective layer 102, which can be used to block water and oxygen from invading and emitting light
  • the device plays a role in protecting the light-emitting device from water and oxygen.
  • a routing structure of a bending region provided by this embodiment includes a first protective layer 301, a first metal layer 302, a third protective layer 303, a second metal layer 304, and The second protective layer 305 and the third protective layer 303 are provided with via holes 306.
  • FIG. 4 it is a cross-sectional view of the routing structure along the routing direction.
  • the first metal layer 302 is disposed on the first protective layer 301
  • the third protective layer 303 is disposed on the first metal layer 302 and the second metal
  • the first metal layer 302 and the second metal layer 304 are connected through a via 306 (not shown) provided on the third protective layer 303
  • the second protective layer 305 is provided on the second metal layer 304 on.
  • the via hole 306 is composed of four through holes with a uniform cross-sectional shape that is rectangular. In other embodiments, the size, number, and shape of the via holes 306 may be adjusted according to actual conditions.
  • FIG. 5 is a schematic diagram of the wiring structure of the bending region in this embodiment.
  • the figure only shows that the first metal layer 302 is disposed on the first protective layer 301, and the second metal layer 304 is the same as the first metal layer 302. Not shown.
  • the first metal layer 302 includes a plurality of signal line units 501 arranged at intervals, and the distance between adjacent signal line units 501 is equal.
  • the signal line unit 501 is composed of two signal lines 502 arranged in parallel with each other, and a connection structure is provided between the two signal lines 502, and the number of connection structures can be adjusted according to the length of the signal line.
  • the two signal lines 502 provided in the same signal line unit 501 are connected to each other at both ends of the first organic protective layer 301 along the signal line routing direction to form an edge unit 503, and the signals passing through the two signal lines are thus summarized , Transmitted to the effective display area of the flexible display device.
  • the wiring structure further includes a barrier layer 601 disposed below the first protective layer and a substrate 602 disposed below the barrier layer 601.
  • the two signal lines 502 connected through the via 306 both transmit the same signal, that is, the same signal can be transmitted by four signal lines. When one of the signal lines breaks, the other three signal lines can be turned on, further Ensure the signal transmission.
  • organic protective layers are provided on the upper and lower parts of the first metal layer 302 and the second metal layer 304 to protect the metal wiring, which further improves the bending resistance of the wiring in the bending area.
  • a is the distance between the signal line unit 501 side and the adjacent side of the signal line unit 501
  • b is the width of the signal line unit 501
  • c is the width of the signal line 502
  • d is adjacent
  • the distance between two adjacent signal lines 502 is equal
  • the distance between two adjacent signal line units 501 is also equal
  • the size of the wiring structure satisfies: 15 ⁇ m ⁇ a ⁇ 20 ⁇ m, 9 ⁇ m ⁇ b ⁇ 15 ⁇ m, 3 ⁇ m ⁇ c ⁇ 5 ⁇ m, 3 ⁇ m ⁇ d ⁇ 5 ⁇ m.
  • FIG. 1 is a wiring structure of a bending region of a display device provided in this embodiment.
  • the wiring structure includes a first metal layer 101 and a first organic protective layer 102.
  • the first metal layer 101 is disposed on the first organic protection Level 102.
  • the first metal layer 101 includes a plurality of signal line units 104 arranged at intervals, and the signal line unit 104 is composed of at least two signal lines arranged parallel to each other.
  • the signal line unit 104 is composed of three signal lines 105 arranged in parallel to each other, and a horizontal connection perpendicular to the signal line direction is provided between the three signal lines 105, and any two of the signal line units are adjacent The horizontal connection parts are all misaligned.
  • the three signal lines 105 disposed in the same signal line unit 104 are connected to each other at both ends of the first organic protective layer 102 along the signal line routing direction to form an edge unit 103.
  • This design can satisfy a signal to be transmitted between three signal lines. When one of the signal lines breaks, the signal can be transmitted through the other two signal lines, and it is aggregated at the end of the signal line unit to transmit the signal to the display device.
  • the effective display area further ensures the signal transmission.
  • a is the distance between the signal line unit 104 side and the adjacent side of the signal line unit 104
  • b is the width of the signal line unit 104
  • c is the width of the signal line 105
  • d is adjacent The interval width of the two signal lines 105.
  • the distance between two adjacent signal lines 105 is equal
  • the distance between two adjacent signal line units 104 is also equal
  • the size of the wiring structure satisfies: 15 ⁇ m ⁇ a ⁇ 20 ⁇ m, 9 ⁇ m ⁇ b ⁇ 15 ⁇ m, 3 ⁇ m ⁇ c ⁇ 5 ⁇ m, 3 ⁇ m ⁇ d ⁇ 5 ⁇ m.
  • the routing structure of the bending area further includes a substrate 201, a barrier layer 202 and a second organic protective layer 203.
  • the first organic protective layer 102 is disposed on the barrier layer 202
  • the second organic protective layer 203 is disposed on the first metal layer 101 and disposed in the gap between the signal lines 105.
  • organic protective layers are provided above and below the first metal layer 101 for protection, which further improves the bending resistance of the metal traces in the bending area.
  • the signal line 105 is a composite structure in which Ti/AI/Ti three layers of metal are sequentially stacked, and a barrier layer 202 is provided between the substrate 201 and the first organic protective layer 102, which can be used to block water and oxygen from invading and emitting light
  • the device plays a role in protecting the light-emitting device from water and oxygen.
  • This embodiment provides a wiring structure for a bending region of a display device.
  • the wiring structure includes a first protective layer 301, a first metal layer 302, a third protective layer 303, and a second metal
  • the layer 304 and the second protective layer 305, and the third protective layer 303 are provided with vias 306.
  • FIG. 4 it is a cross-sectional view of the routing structure along the routing direction.
  • the first metal layer 302 is disposed on the first protective layer 301
  • the third protective layer 303 is disposed on the first metal layer 302 and the second metal
  • the first metal layer 302 and the second metal layer 304 are connected through a via 306 (not shown) provided on the third protective layer 303
  • the second protective layer 305 is provided on the second metal layer 304 on.
  • the via hole 306 is composed of four through holes with a uniform cross-sectional shape that is rectangular. In other embodiments, the size, number, and shape of the via holes 306 may be adjusted according to actual conditions.
  • FIG. 5 is a schematic diagram of the wiring structure of the bending region in this embodiment.
  • the figure only shows that the first metal layer 302 is disposed on the first protective layer 301, and the second metal layer 304 is the same as the first metal layer 302. Not shown.
  • the first metal layer 302 includes a plurality of signal line units 501 arranged at intervals, and the distance between adjacent signal line units 501 is equal.
  • the signal line unit 501 is composed of two signal lines 502 arranged in parallel with each other, and a connection structure is provided between the two signal lines 502, and the number of connection structures can be adjusted according to the length of the signal line.
  • the two signal lines 502 provided in the same signal line unit 501 are connected to each other at both ends of the first organic protective layer 301 along the signal line routing direction to form an edge unit 503, and the signals passing through the two signal lines are thus summarized , Transmitted to the effective display area of the flexible display device.
  • the wiring structure further includes a barrier layer 601 disposed below the first protective layer and a substrate 602 disposed below the barrier layer 601.
  • the two signal lines 502 connected through the via 306 both transmit the same signal, that is, the same signal can be transmitted by four signal lines. When one of the signal lines breaks, the other three signal lines can be turned on, further Ensure the signal transmission.
  • organic protective layers are provided on the upper and lower parts of the first metal layer 302 and the second metal layer 304 to protect the metal wiring, which further improves the bending resistance of the wiring in the bending area.
  • a is the distance between the signal line unit 501 side and the adjacent side of the signal line unit 501
  • b is the width of the signal line unit 501
  • c is the width of the signal line 502
  • d is adjacent
  • the distance between two adjacent signal lines 502 is equal
  • the distance between two adjacent signal line units 501 is also equal
  • the size of the wiring structure satisfies: 15 ⁇ m ⁇ a ⁇ 20 ⁇ m, 9 ⁇ m ⁇ b ⁇ 15 ⁇ m, 3 ⁇ m ⁇ c ⁇ 5 ⁇ m, 3 ⁇ m ⁇ d ⁇ 5 ⁇ m.
  • a parallel connection is provided between the parallel signal lines, and the two ends of the signal lines are connected to each other to realize the same signal in multiple signal lines in a signal line unit
  • Intermittent transmission is summarized at the end of the signal line unit to further ensure the safety and stability of signal transmission.
  • organic protective layers are provided at both ends of the signal line to protect the metal layer where the signal line is located, which further improves the bending of the display device The bending resistance of the zone.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Hardware Design (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种弯折区走线结构及其显示装置，走线结构包括基底（201）、第一有机保护层（102）、第一金属层（101）以及第二有机保护层（203），第一金属层（101）设置于第一有机保护层（102）上，第二有机保护层（203）设置于第一金属层（101）上且设置于信号线（105）之间的间隙内。

Description

一种弯折区走线结构及其显示装置 技术领域
本揭示涉及液晶显示领域，尤其涉及一种弯折区走线结构及其显示装置。
 背景技术
众所周知，有机发光二极管（Organic Light Emitting Display，OLED）显示装置件，因其制成重量轻、可卷曲、易于携带等诸多优势，受到了人们的广泛关注。而近些年来，新兴的“全面屏”设计成为主流，这就对面板的四个边框提出了更窄的要求。在面板的边框中，底部的宽度会比其他三边大，主要是由于集成电路（Intergrated Cricuit，IC）以及柔性印刷电路板（Flexible Print Circuit，FPC）驱动的原因，这就不利于实现“全面屏”的设计。
 技术问题
现阶段一般的柔性OLED显示装置中，会有弯折区的结构设计，目的是将弯折区以下的区域（扇出、IC、FPC）弯折到面板的背向侧，这将大大的缩减下边界的宽度。但是对于弯折区走线的设计需要有较强的抗弯折性能，否则在弯折制程中，走线会发生断裂，失去功能性，影响显示面板的驱动。
综上所述，现有柔性显示装置弯折区金属走线抗弯性能差，容易发生断裂。故，有必要提供一种柔性显示装置弯折区走线结构来改善这一缺陷。
 技术解决方案
本揭示提供一种弯折区走线结构，用于解决现有技术弯折区金属走线抗弯折性能差、容易断裂的问题。
本揭示提供一种弯折区走线结构，所述走线结构包括，基底；
第一有机保护层，所述第一有机保护层设置于所述基底上；
第一金属层，所述第一金属层设置于所述第一有机保护层上，所述第一金属层包括多个间隔设置的信号线单元，所述信号线单元由至少两条平行设置的信号线组成，相邻所述信号线之间相互连接；
第二有机保护层，所述第二有机保护层设置于所述第一金属层上且设置于所述信号线之间的间隙内。
根据本揭示一实施例，所述信号线单元中任意两个相邻的连接部分均错位排布。
根据本揭示一实施例，设置于同一所述信号线单元的所述信号线在所述第一有机保护层的两端均相互连接，且设置于同一所述信号线单元的所述信号线均传输相同信号。
根据本揭示一实施例，所述走线结构还包括第二金属层以及第三有机保护层。
根据本揭示一实施例，所述第二金属层设置于所述第一金属层上，所述第三有机保护层设置于所述第一金属层和第二金属层之间且设置于所述信号线之间的间隙内。
根据本揭示一实施例，所述第三有机保护层设有过孔，所述第一金属层与所述第二金属层通过过孔连接，构成同一所述信号线单元。
根据本揭示一实施例，设置于同一所述信号线单元的所述信号线在所述第一有机保护层以及第三有机保护层的两端均相互连接。
根据本揭示一实施例，所述走线结构还包括阻挡层，所述阻挡层设置于所述基底与所述第一有机保护层之间。
根据本揭示一实施例，所述走线结构满足，15μm≤a≤20μm，9μm≤b≤15μm，3μm≤c≤5μm，3μm≤d≤5μm；
其中a是所述信号线单元一侧与相邻所述信号线单元相同一侧的距离，b是所述信号线单元的宽度，c是所述信号线的宽度，d是相邻所述信号线的间隔宽度。
本揭示提供一种显示装置，所述显示装置包括弯折区走线结构，所述走线结构包括：
基底；
第一有机保护层，所述第一有机保护层设置于所述基底上；
第一金属层，所述第一金属层设置于所述第一有机保护层上，所述第一金属层包括多个间隔设置的信号线单元，所述信号线单元由至少两条平行设置的信号线组成，相邻所述信号线之间相互连接；
第二有机保护层，所述第二有机保护层设置于所述第一金属层上且设置于所述信号线之间的间隙内。
根据本揭示一实施例，所述信号线单元中任意两个相邻的信号线的连接部分均错位排布。
根据本揭示一实施例，设置于同一所述信号线单元的所述信号线在所述第一有机保护层的两端均相互连接，且设置于同一所述信号线单元的所述信号线均传输相同信号。
根据本揭示一实施例，所述走线结构还包括第二金属层以及第三有机保护层。
根据本揭示一实施例，所述第二金属层设置于所述第一金属层上，所述第三有机保护层设置于所述第一金属层和第二金属层之间且设置于所述信号线之间的间隙内。
根据本揭示一实施例，所述第三有机保护层设有过孔，所述第一金属层与所述第二金属层通过过孔连接，构成同一所述信号线单元。
根据本揭示一实施例，设置于同一所述信号线单元的所述信号线在所述第一有机保护层以及第三有机保护层的两端均相互连接。
根据本揭示一实施例，所述走线结构还包括阻挡层，所述阻挡层设置于所述基底与所述第一有机保护层之间。
根据本揭示一实施例，所述走线结构满足，15μm≤a≤20μm，9μm≤b≤15μm，3μm≤c≤5μm，3μm≤d≤5μm；
其中a是所述信号线单元一侧与相邻所述信号线单元相同一侧的距离，b是所述信号线单元的宽度，c是所述信号线的宽度，d是相邻所述信号线的间隔宽度。
 有益效果
本揭示的有益效果：本揭示通过将单一信号线设计为多条并行的信号线，并行的信号线之间又设有横向连接，信号线两端相互连接，实现同一信号在一个信号线单元内的多条信号线之间传输，在信号线单元端部汇总，进一步保证了信号输送的安全稳定，同时在信号线上下两端均设有有机保护层对信号线所在的金属层进行保护，进一步提高了柔性显示装置弯折区的抗弯折性能。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是揭示的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为弯折区走线结构示意图；
图2为弯折区走线结构沿A-A方向的截面图；
图3为弯折区第二种走线结构设计示意图；
图4为弯折区第二种走线结构沿走线方向的剖面图；
图5为弯折区第二种走线结构示意图；
图6为弯折区第二种走线结构沿B-B方向的截面图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
下面结合附图和具体实施例对本揭示做进一步的说明：
实施例一：
在本实施例提供的一种弯折区走线结构，以下结合图1至图2对所述制作方法进行详细描述。
图1是本实施例提供的一种弯折区走线结构示意图，所述走线结构包括第一金属层101以及第一有机保护层102，第一金属层101设置于第一有机保护层102上。第一金属层101包括多个间隔设置的信号线单元104，所述信号线单元104由至少两条相互平行设置的信号线组成。
在本实施例中，所述信号线单元104由三条相互平行设置的信号线105组成，三条信号线105之间设有与信号线走向相垂直的横向连接，信号线单元中任意两个相邻的横向连接部分均错位排布。设置于同一个信号线单元104内的三条信号线105在第一有机保护层102沿信号线走线方向的两端均相互连接，构成边缘单元103。这样设计可以满足一个信号在三条信号线之间相互传递，当其中一条信号线发生断裂，信号可以通过其他两条信号线进行传递，并在信号线单元的末端汇总，将信号传递给显示装置的有效显示区，进一步保证了信号的输送。
如图1所示，a是信号线单元104一侧与相邻所述信号线单元104相同一侧的距离，b是信号线单元104的宽度，c是信号线105的宽度，d是相邻两条信号线105的间隔宽度。在本实施例中，相邻两条信号线105之间的距离相等，相邻两个信号线单元104之间的距离也相等，走线结构的尺寸满足：15μm≤a≤20μm，9μm≤b≤15μm，3μm≤c≤5μm，3μm≤d≤5μm。
如图2所示，图2弯折区走线结构沿A-A方向的截面图，弯折区走线结构还包括基底201、阻挡层202以及第二有机保护层203，阻挡层202设置于基底201上，第一有机保护层102设置于阻挡层202上，第二有机保护层203设置于第一金属层101上且设置于所述信号线105之间的间隙内。
在本实施例中，第一金属层101的上方和下方均设置了有机保护层进行保护，进一步提高了弯折区金属走线的抗弯折性能。
在本实施例中，信号线105为Ti/AI/Ti三层金属依次叠加的复合结构，在基底201与第一有机保护层102之间设有阻挡层202，能够用于阻挡水氧侵入发光器件，对发光器件起到阻隔水氧的保护作用。
实施例二：
在本实施例提供的一种弯折区走线结构，以下结合图3至图6对所述制作方法进行详细描述。
本实施例提供的一种弯折区走线结构，如图3所示，所述走线结构包括第一保护层301、第一金属层302、第三保护层303、第二金属层304以及第二保护层305，第三保护层303上设有过孔306。
如图4所示，是所述走线结构沿走线方向的剖面图，第一金属层302设置于第一保护层301上，第三保护层303设置于第一金属层302与第二金属层304之间，第一金属层302与第二金属层304通过设置在第三保护层303上的过孔306（图中未示出）连接，第二保护层305设置于第二金属层304上。
在本实施例中，过孔306是由四个大小一致的截面形状为矩形的通孔组成，在其他实施例中，可以根据实际情况，调整过孔306的大小、数量以及形状。
图5是本实施例中弯折区走线结构示意图，图中仅展示出第一金属层302设置于第一保护层301之上，第二金属层304与第一金属层302情况相同，图中未示出。第一金属层302包括多个间隔设置的信号线单元501，相邻信号线单元501之间的间隔距离相等。信号线单元501由两条相互平行设置的信号线502组成，两条信号线502之间设有连接结构，连接结构的数量可以根据信号线的长度进行调整。设置于同一个信号线单元501内的两条信号线502在第一有机保护层301沿信号线走线方向的两端均相互连接，构成边缘单元503，通过两条信号线的信号由此汇总，传输给柔性显示装置的有效显示区域。
图6是弯折区第二种走线结构沿B-B方向的截面图，所述走线结构还包括设置于第一保护层下方的阻挡层601以及设置于阻挡层601下方的基底602。如截面图所示，通过过孔306连接的两层信号线502均传输同一的信号，即同一信号可由四条信号线进行传输，当其中一条信号线发生断裂，另外三条信号线可以导通，进一步保证了信号的输送。同时，在第一金属层302以及第二金属层304的上下部分均设置有有机保护层对金属走线进行保护，进一步提升了弯折区走线的抗弯折性能。
在本实施例中，a是信号线单元501一侧与相邻所述信号线单元501相同一侧的距离，b是信号线单元501的宽度，c是信号线502的宽度，d是相邻两条信号线502的间隔宽度。在本实施例中，相邻两条信号线502之间的距离相等，相邻两个信号线单元501之间的距离也相等，走线结构的尺寸满足：15μm≤a≤20μm，9μm≤b≤15μm，3μm≤c≤5μm，3μm≤d≤5μm。
实施例三：
在本实施例提供的一种显示装置，以下结合图1至图2对所述制作方法进行详细描述。
图1是本实施例提供的一种显示装置的弯折区走线结构，所述走线结构包括第一金属层101以及第一有机保护层102，第一金属层101设置于第一有机保护层102上。第一金属层101包括多个间隔设置的信号线单元104，所述信号线单元104由至少两条相互平行设置的信号线组成。
在本实施例中，所述信号线单元104由三条相互平行设置的信号线105组成，三条信号线105之间设有与信号线走向相垂直的横向连接，信号线单元中任意两个相邻的横向连接部分均错位排布。设置于同一个信号线单元104内的三条信号线105在第一有机保护层102沿信号线走线方向的两端均相互连接，构成边缘单元103。这样设计可以满足一个信号在三条信号线之间相互传递，当其中一条信号线发生断裂，信号可以通过其他两条信号线进行传递，并在信号线单元的末端汇总，将信号传递给显示装置的有效显示区，进一步保证了信号的输送。
如图1所示，a是信号线单元104一侧与相邻所述信号线单元104相同一侧的距离，b是信号线单元104的宽度，c是信号线105的宽度，d是相邻两条信号线105的间隔宽度。在本实施例中，相邻两条信号线105之间的距离相等，相邻两个信号线单元104之间的距离也相等，走线结构的尺寸满足：15μm≤a≤20μm，9μm≤b≤15μm，3μm≤c≤5μm，3μm≤d≤5μm。
如图2所示，图2弯折区走线结构沿A-A方向的截面图，弯折区走线结构还包括基底201、阻挡层202以及第二有机保护层203，阻挡层202设置于基底201上，第一有机保护层102设置于阻挡层202上，第二有机保护层203设置于第一金属层上101且设置于所述信号线105之间的间隙内。
在本实施例中，第一金属层101的上方和下方均设置了有机保护层进行保护，进一步提高了弯折区金属走线的抗弯折性能。
在本实施例中，信号线105为Ti/AI/Ti三层金属依次叠加的复合结构，在基底201与第一有机保护层102之间设有阻挡层202，能够用于阻挡水氧侵入发光器件，对发光器件起到阻隔水氧的保护作用。
实施例四：
在本实施例提供的一种显示装置，以下结合图3至图6对所述制作方法进行详细描述。
本实施例提供的一种显示装置的弯折区走线结构，如图3所示，所述走线结构包括第一保护层301、第一金属层302、第三保护层303、第二金属层304以及第二保护层305，第三保护层303上设有过孔306,。
如图4所示，是所述走线结构沿走线方向的剖面图，第一金属层302设置于第一保护层301上，第三保护层303设置于第一金属层302与第二金属层304之间，第一金属层302与第二金属层304通过设置在第三保护层303上的过孔306（图中未示出）连接，第二保护层305设置于第二金属层304上。
在本实施例中，过孔306是由四个大小一致的截面形状为矩形的通孔组成，在其他实施例中，可以根据实际情况，调整过孔306的大小、数量以及形状。
图5是本实施例中弯折区走线结构示意图，图中仅展示出第一金属层302设置于第一保护层301之上，第二金属层304与第一金属层302情况相同，图中未示出。第一金属层302包括多个间隔设置的信号线单元501，相邻信号线单元501之间的间隔距离相等。信号线单元501由两条相互平行设置的信号线502组成，两条信号线502之间设有连接结构，连接结构的数量可以根据信号线的长度进行调整。设置于同一个信号线单元501内的两条信号线502在第一有机保护层301沿信号线走线方向的两端均相互连接，构成边缘单元503，通过两条信号线的信号由此汇总，传输给柔性显示装置的有效显示区域。
图6是弯折区第二种走线结构沿B-B方向的截面图，所述走线结构还包括设置于第一保护层下方的阻挡层601以及设置于阻挡层601下方的基底602。如截面图所示，通过过孔306连接的两层信号线502均传输同一的信号，即同一信号可由四条信号线进行传输，当其中一条信号线发生断裂，另外三条信号线可以导通，进一步保证了信号的输送。同时，在第一金属层302以及第二金属层304的上下部分均设置有有机保护层对金属走线进行保护，进一步提升了弯折区走线的抗弯折性能。
在本实施例中，a是信号线单元501一侧与相邻所述信号线单元501相同一侧的距离，b是信号线单元501的宽度，c是信号线502的宽度，d是相邻两条信号线502的间隔宽度。在本实施例中，相邻两条信号线502之间的距离相等，相邻两个信号线单元501之间的距离也相等，走线结构的尺寸满足：15μm≤a≤20μm，9μm≤b≤15μm，3μm≤c≤5μm，3μm≤d≤5μm。
本揭示通过将单一信号线设计为多条并行的信号线，并行的信号线之间又设有横向连接，信号线两端相互连接，实现同一信号在一个信号线单元内的多条信号线之间传输，在信号线单元端部汇总，进一步保证了信号输送的安全稳定，同时在信号线上下两端均设有有机保护层对信号线所在的金属层进行保护，进一步提高了显示装置弯折区的抗弯折性能。
综上所述，虽然本揭示以优选实施例揭露如上，但上述优选实施例并非用以限制本揭示，本领域的普通技术人员，在不脱离本揭示的精神和范围内，均可作各种更动与润饰，因此本揭示的保护范围以权利要求界定的范围为基准。

Claims (18)

  1. 一种弯折区走线结构，包括：
    基底；
    第一有机保护层，所述第一有机保护层设置于所述基底上；
    第一金属层，所述第一金属层设置于所述第一有机保护层上，所述第一金属层包括多个间隔设置的信号线单元，所述信号线单元由至少两条平行设置的信号线组成，相邻所述信号线之间相互连接；以及
    第二有机保护层，所述第二有机保护层设置于所述第一金属层上且设置于所述信号线之间的间隙内。
  2. 如权利要求1所述的走线结构，其中，所述信号线单元中任意两个相邻的信号线的连接部分均错位排布。
  3. 如权利要求1所述的走线结构，其中，设置于同一所述信号线单元的所述信号线在所述第一有机保护层的两端均相互连接，且设置于同一所述信号线单元的所述信号线均传输相同信号。
  4. 如权利要求1所述的走线结构，其中，所述走线结构还包括第二金属层以及第三有机保护层。
  5. 如权利要求4所述的走线结构，其中，所述第二金属层设置于所述第一金属层上，所述第三有机保护层设置于所述第一金属层和第二金属层之间且设置于所述信号线之间的间隙内。
  6. 如权利要求5所述的走线结构，其中，所述第三有机保护层设有过孔，所述第一金属层与所述第二金属层通过所述过孔连接，构成同一所述信号线单元。
  7. 如权利要求6所述的走线结构，其中，设置于同一所述信号线单元的所述信号线在所述第一有机保护层以及第三有机保护层的两端均相互连接。
  8. 如权利要求1所述的走线结构，其中，所述走线结构还包括阻挡层，所述阻挡层设置于所述基底与所述第一有机保护层之间。
  9. 如权利要去1所述的走线结构，其中，所述走线结构满足，15μm≤a≤20μm，9μm≤b≤15μm，3μm≤c≤5μm，3μm≤d≤5μm；
    其中a是所述信号线单元一侧与相邻所述信号线单元相同一侧的距离，b是所述信号线单元的宽度，c是所述信号线的宽度，d是相邻所述信号线的间隔宽度。
  10. 一种显示装置，其中，所述显示装置包括弯折区走线结构，所述弯折区走线结构包括：
    基底；
    第一有机保护层，所述第一有机保护层设置于所述基底上；
    第一金属层，所述第一金属层设置于所述第一有机保护层上，所述第一金属层包括多个间隔设置的信号线单元，所述信号线单元由至少两条平行设置的信号线组成，相邻所述信号线之间相互连接；以及
    第二有机保护层，所述第二有机保护层设置于所述第一金属层上且设置于所述信号线之间的间隙内。
  11. 如权利要求10所述的显示装置，其中，所述信号线单元中任意两个相邻的信号线的连接部分均错位排布。
  12. 如权利要求10所述的显示装置，其中，设置于同一所述信号线单元的所述信号线在所述第一有机保护层的两端均相互连接，且设置于同一所述信号线单元的所述信号线均传输相同信号。
  13. 如权利要求10所述的显示装置，其中，所述走线结构还包括第二金属层以及第三有机保护层。
  14. 如权利要求13所述的显示装置，其中，所述第二金属层设置于所述第一金属层上，所述第三有机保护层设置于所述第一金属层和第二金属层之间且设置于所述信号线之间的间隙内。
  15. 如权利要求14所述的显示装置，其中，所述第三有机保护层设有过孔，所述第一金属层与所述第二金属层通过过孔连接，构成同一所述信号线单元。
  16. 如权利要求15所述的显示装置，其中，设置于同一所述信号线单元的所述信号线在所述第一有机保护层以及第三有机保护层的两端均相互连接。
  17. 如权利要求10所述的显示装置，其中，所述走线结构还包括阻挡层，所述阻挡层设置于所述基底与所述第一有机保护层之间。
  18. 如权利要去10所述的显示装置，其中，所述走线结构满足，15μm≤a≤20μm，9μm≤b≤15μm，3μm≤c≤5μm，3μm≤d≤5μm；
    其中a是所述信号线单元一侧与相邻所述信号线单元相同一侧的距离，b是所述信号线单元的宽度，c是所述信号线的宽度，d是相邻所述信号线的间隔宽度。
PCT/CN2019/078507 2018-12-05 2019-03-18 一种弯折区走线结构及其显示装置 Ceased WO2020113848A1 (zh)

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