WO2019127880A1 - 柔性电路板保护层及oled显示装置 - Google Patents

柔性电路板保护层及oled显示装置 Download PDF

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Publication number
WO2019127880A1
WO2019127880A1 PCT/CN2018/076948 CN2018076948W WO2019127880A1 WO 2019127880 A1 WO2019127880 A1 WO 2019127880A1 CN 2018076948 W CN2018076948 W CN 2018076948W WO 2019127880 A1 WO2019127880 A1 WO 2019127880A1
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Prior art keywords
circuit board
flexible circuit
layer
bending
disposed
Prior art date
Application number
PCT/CN2018/076948
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English (en)
French (fr)
Inventor
吴嘉树
Original Assignee
武汉华星光电半导体显示技术有限公司
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Priority to US15/777,174 priority Critical patent/US20200170106A1/en
Publication of WO2019127880A1 publication Critical patent/WO2019127880A1/zh

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    • 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
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • 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
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • H05K1/0281—Reinforcement details thereof
    • 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
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/28—Applying non-metallic protective coatings
    • 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
    • G09F9/33—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 being semiconductor devices, e.g. diodes
    • 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
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
    • 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
    • H10K59/10—OLED displays
    • H10K59/17—Passive-matrix OLED displays
    • H10K59/179—Interconnections, e.g. wiring lines or terminals
    • 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
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
    • 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
    • H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
    • H05K2201/0275—Fibers and reinforcement materials
    • H05K2201/029—Woven fibrous reinforcement or textile
    • 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
    • H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
    • H05K2201/0275—Fibers and reinforcement materials
    • H05K2201/0293—Non-woven fibrous reinforcement
    • 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
    • H05K2201/05—Flexible printed circuits [FPCs]
    • H05K2201/055—Folded back on itself
    • 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
    • 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
    • H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
    • H05K2201/2009—Reinforced areas, e.g. for a specific part of a flexible printed circuit

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a flexible circuit board protective layer and an OLED display device.
  • OLED Organic Light Emitting Display
  • OLED has self-illumination, low driving voltage, high luminous efficiency, short response time, high definition and contrast ratio, near 180° viewing angle, wide temperature range, and flexible display.
  • a large-area full-color display and many other advantages have been recognized by the industry as the most promising display device.
  • OLED can be divided into two types: passive matrix OLED (PMOLED) and active matrix OLED (AMOLED), namely direct addressing and thin film transistor (TFT) matrix addressing. class.
  • PMOLED passive matrix OLED
  • AMOLED active matrix OLED
  • TFT thin film transistor
  • the AMOLED has pixels arranged in an array, belongs to an active display type, has high luminous efficiency, and is generally used as a high-definition large-sized display device.
  • the OLED device generally includes a substrate, an anode disposed on the substrate, a hole injection layer disposed on the anode, a hole transport layer disposed on the hole injection layer, and a light-emitting layer disposed on the hole transport layer.
  • the principle of illumination of OLED devices is that semiconductor materials and organic luminescent materials are driven by electric fields, causing luminescence by carrier injection and recombination.
  • an OLED device generally uses an indium tin oxide (ITO) electrode and a metal electrode as anodes and cathodes of the device, respectively.
  • ITO indium tin oxide
  • electrons and holes are injected from the cathode and the anode to the electron transport layer and the hole transport layer, respectively.
  • the electrons and holes migrate to the light-emitting layer through the electron transport layer and the hole transport layer, respectively, and meet in the light-emitting layer to form excitons and excite the light-emitting molecules, and the latter emits visible light through radiation relaxation.
  • the area of the flexible circuit board on the display panel is bent by the requirement of the narrow frame to reduce the area of the non-display area, thereby achieving the purpose of increasing the screen ratio.
  • the area of the bonded flexible circuit board is prone to micro-cracks, circuit breakage or peeling after being bent, and the part may also be micro-cracked or peeled due to insufficient strength during production and transportation of the product, which may result in AMOLED.
  • the display device is poorly displayed.
  • the prior art will apply ultraviolet (UV) curing adhesive or Tuffy glue to protect the flexible circuit board on the display panel in the region where the flexible circuit board is bonded, however,
  • UV ultraviolet
  • Tuffy glue to protect the flexible circuit board on the display panel in the region where the flexible circuit board is bonded
  • the uniformity of the area coating is not well controlled, and it is easy to occur. It is subject to the limitation of coating thickness and the limitation of the strength of the rubber. In order to ensure the protection effect, the rubber layer generally has a large thickness and affects the bending property. .
  • Another object of the present invention is to provide an OLED display device that utilizes a flexible circuit board protective layer to effectively protect a flexible circuit board from being damaged when bent.
  • the present invention firstly provides a flexible circuit board protective layer, comprising a flexible substrate, a first bending layer disposed on one side of the flexible substrate, and a side of the first bending layer away from the flexible substrate.
  • Second bending layer comprising a flexible substrate, a first bending layer disposed on one side of the flexible substrate, and a side of the first bending layer away from the flexible substrate.
  • the first bending layer includes a plurality of first strip portions arranged in parallel and at intervals;
  • the second bending layer includes a plurality of second strip portions arranged in parallel and spaced apart;
  • the extending direction of the first strip portion is perpendicular to the extending direction of the second strip portion.
  • the material of the first bending layer is at least one of glass fiber and non-woven fabric
  • the material of the second bending layer is at least one of glass fiber and non-woven fabric.
  • the material of the flexible substrate is an organic polymer material.
  • the shape of the first strip portion is a rectangle; the shape of the second strip portion is a rectangle.
  • the present invention further provides an OLED display device comprising a display panel, a flexible circuit board disposed on one side of the display panel, and two layers of the above flexible circuit board protective layer;
  • the protective layer of the two-layer flexible circuit board is respectively disposed on a side of the flexible circuit board near the display panel and away from the display panel.
  • each of the first bending layers of the flexible circuit board protective layer is disposed on a side of the flexible substrate adjacent to the flexible circuit board.
  • each flexible circuit board protective layer is disposed on a side of the flexible substrate away from the flexible circuit board.
  • a first bending layer of the flexible circuit board protective layer disposed on a side of the flexible circuit board away from the display panel is disposed on a side of the flexible substrate adjacent to the flexible circuit board;
  • a first bending layer of the flexible circuit board protective layer disposed on a side of the flexible circuit board adjacent to the display panel is disposed on a side of the flexible substrate away from the flexible circuit board.
  • a first bending layer of the flexible circuit board protective layer disposed on a side of the flexible circuit board away from the display panel is disposed on a side of the flexible substrate away from the flexible circuit board;
  • a first bending layer of the flexible circuit board protective layer disposed on a side of the flexible circuit board adjacent to the display panel is disposed on a side of the flexible substrate adjacent to the flexible circuit board.
  • the materials of the first bending layers of the two flexible circuit board protective layers are different;
  • the materials of the second bending layers of the two flexible circuit board protective layers are different.
  • the present invention also provides a flexible circuit board protective layer, comprising a flexible substrate, a first bending layer disposed on one side of the flexible substrate, and a second bending layer disposed on a side of the first bending layer away from the flexible substrate ;
  • the first bending layer includes a plurality of first strip portions arranged in parallel and at intervals;
  • the second bending layer includes a plurality of second strip portions arranged in parallel and spaced apart;
  • the extending direction of the first strip portion is perpendicular to the extending direction of the second strip portion
  • the material of the first bending layer is at least one of glass fiber and non-woven fabric
  • the material of the second bending layer is at least one of glass fiber and non-woven fabric
  • the material of the flexible substrate is an organic polymer material
  • the shape of the first strip portion is a rectangle; and the shape of the second strip portion is a rectangle.
  • the present invention provides a flexible circuit board protective layer comprising a flexible substrate, a first bending layer disposed on one side of the flexible substrate, and a side of the first bending layer away from the flexible substrate a second bending layer, the first bending layer comprises a plurality of first strip portions arranged in parallel and spaced apart, and the second bending layer comprises a plurality of second strip portions arranged in parallel and spaced apart, the first strip portion
  • the extending direction is perpendicular to the extending direction of the second strip portion.
  • the flexible circuit board is effectively protected to prevent the flexible circuit board from being damaged during bending, and the flexible circuit board is prevented from being damaged by external force during production and transportation of the OLED display device.
  • the invention provides an OLED display device, which utilizes a flexible circuit board protective layer to effectively protect a flexible circuit board and prevent the flexible circuit board from being damaged when bent.
  • FIG. 1 is a top plan view of a protective layer of a flexible circuit board of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A' of Figure 1;
  • FIG. 3 is a schematic structural view of a first embodiment of an OLED display device of the present invention.
  • FIG. 4 is a schematic structural view of a second embodiment of an OLED display device of the present invention.
  • FIG. 5 is a schematic structural view of a third embodiment of an OLED display device of the present invention.
  • FIG. 6 is a schematic structural view of a fourth embodiment of an OLED display device of the present invention.
  • the present invention provides a flexible circuit board protective layer, including a flexible substrate 10, a first bending layer 20 disposed on one side of the flexible substrate 10, and a first bending layer 20 disposed away from the first bending layer 20 a second bending layer 30 on one side of the flexible substrate 10;
  • the first bending layer 20 includes a plurality of first strip portions 21 arranged in parallel and spaced apart;
  • the second bending layer 30 includes a plurality of second strip portions 31 arranged in parallel and spaced apart;
  • the extending direction of the first strip portion 21 is perpendicular to the extending direction of the second strip portion 31.
  • the material of the first bending layer 20 and the material of the second bending layer 30 are both selected to have good bending performance and easy processing.
  • the material of the first bending layer 20 may be, but not limited to,
  • the material of the second bending layer 30 may be at least one of glass fiber and non-woven fabric, which is at least one of glass fiber and non-woven fabric.
  • the material of the first bending layer 20 and the material of the second bending layer 30 may be the same or different, and the material of the first bending layer 20 and the material strength of the second bending layer 30 are according to the product. The specific needs of the design can be.
  • the material of the flexible substrate 10 is selected from materials having good bending properties and easy processing, and an organic polymer material such as a high temperature resistant resin material such as polyimide (PI) may be selected.
  • an organic polymer material such as a high temperature resistant resin material such as polyimide (PI) may be selected.
  • the shape and size of the first strip portion 21 and the shape and size of the second strip portion 31 can be designed according to the bending performance requirements of the product, for example, in the embodiment shown in FIG.
  • the shape of the first strip portion 21 is a rectangle, and the shape of the second strip portion 31 is also a rectangle.
  • the flexible circuit board protective layer of the present invention when the flexible circuit board protective layer of the present invention is applied to an OLED display device, the flexible circuit board is sandwiched between two layers of the flexible circuit board protective layer of the present invention to form a three-layer structure.
  • the layer structure is disposed in a flexible circuit board bonding region on one side of the display panel, that is, a bending region provided for realizing a narrow bezel, by providing a first bending having a plurality of first strip portions 21
  • the layer 20 and the second bending layer 30 having a plurality of second strip portions 31 extending perpendicularly to the first strip portion 21 have different structural strengths by using the first bending layer 20 and the second bending layer 30
  • the characteristics of the flexible circuit board protective layer and the flexible circuit board sandwiched between the protective layers of the flexible circuit board are greatly improved, and the flexible circuit board protective layer can effectively protect the flexible circuit board and prevent the flexible circuit board Damaged during bending, improving the bending performance of the flexible circuit board bonding region of the OLED display device, and
  • a first embodiment of a flexible display device according to the present invention includes an OLED display device.
  • a flexible circuit board 2 disposed on one side of the display panel 1 and two layers of flexible circuit board protection layer 3;
  • the two-layer flexible circuit board protective layer 3 is respectively disposed on the side of the flexible circuit board 2 near the display panel 1 and away from the display panel 1.
  • the flexible circuit board protective layer 3 includes a flexible substrate 10 , a first bending layer 20 disposed on one side of the flexible substrate 10 , and is disposed away from the first bending layer 20 . a second bending layer 30 on one side of the flexible substrate 10;
  • the first bending layer 20 includes a plurality of first strip portions 21 arranged in parallel and spaced apart;
  • the second bending layer 30 includes a plurality of second strip portions 31 arranged in parallel and spaced apart;
  • the extending direction of the first strip portion 21 is perpendicular to the extending direction of the second strip portion 31.
  • the material of the first bending layer 20 and the material of the second bending layer 30 are both selected to have good bending performance and easy processing.
  • the material of the first bending layer 20 may be, but not limited to,
  • the material of the second bending layer 30 may be at least one of glass fiber and non-woven fabric, which is at least one of glass fiber and non-woven fabric.
  • the material of the first bending layer 20 and the material of the second bending layer 30 may be the same or different, and the material of the first bending layer 20 and the material strength of the second bending layer 30 are according to the product. The specific needs of the design can be.
  • the material of the flexible substrate 10 is selected from materials having good bending properties and easy processing, and an organic polymer material such as a high temperature resistant resin material such as polyimide (PI) may be selected.
  • an organic polymer material such as a high temperature resistant resin material such as polyimide (PI) may be selected.
  • the shape and size of the first strip portion 21 and the shape and size of the second strip portion 31 can be designed according to the bending performance requirements of the product, for example, in the embodiment shown in FIG.
  • the shape of the first strip portion 21 is a rectangle, and the shape of the second strip portion 31 is also a rectangle.
  • the display panel 1 is provided with a flexible circuit board bonding area, that is, a bending area for realizing a narrow bezel, and the flexible circuit board 2 and two layers of flexible circuit boards disposed on both sides thereof are protected. Layers 3 are all disposed within the bonded region of the flexible circuit board.
  • the first bending layer 20 of each flexible circuit board protective layer 3 is disposed on the flexible substrate 10 adjacent to the flexible circuit board 2.
  • the second bending layer 30 of one side, and further each of the flexible circuit board protective layers 3 is disposed on a side of the first bending layer 20 adjacent to the flexible circuit board 2.
  • the material of the first bending layer 20 of the two flexible circuit board protective layers 3, the material of the second bending layer 30, and the material of the flexible substrate 10 may be the same or different, and may be according to specific product requirements. Make adjustments.
  • a second embodiment of the OLED display device of the present invention is different from the first embodiment in that the first bending layer 20 of each flexible circuit board protective layer 3 is provided. On the side of the flexible substrate 10 away from the flexible circuit board 2, and then the second bending layer 30 of each flexible circuit board 3 is disposed on the side of the first bending layer 20 away from the flexible circuit board 2, and the rest The same as the first embodiment, and details are not described herein again.
  • FIG. 5 is a third embodiment of the OLED display device of the present invention.
  • the third embodiment is different from the first embodiment in that the flexible circuit board 2 is disposed on the side of the display panel 1 .
  • the first bending layer 20 of the layer 3 is disposed on a side of the flexible substrate 10 away from the flexible circuit board 2, and is further disposed on the second bending of the flexible circuit board protection layer 3 of the flexible circuit board 2 near the display panel 1.
  • the layer 30 is disposed on the side of the first bending layer 20 away from the flexible circuit board 2, and the rest are the same as the first embodiment, and details are not described herein again.
  • FIG. 6 is a fourth embodiment of the OLED display device of the present invention.
  • the fourth embodiment is different from the first embodiment in that the flexible circuit board 2 is disposed on the side of the flexible circuit board 2 away from the display panel 1 .
  • the first bending layer 20 of the layer 3 is disposed on a side of the flexible substrate 10 away from the flexible circuit board 2, and is further disposed on the second bending of the flexible circuit board protection layer 3 of the flexible circuit board 2 away from the display panel 1.
  • the layer 30 is disposed on the side of the first bending layer 20 away from the flexible circuit board 2, and the rest are the same as the first embodiment, and details are not described herein again.
  • the flexible circuit board 2 is sandwiched between the two layers of the flexible circuit board protective layer 3 to form a three-layer structure, and the three-layer structure is disposed on the display panel 1.
  • the second bending layer 30 of the second strip portion 31 has different structural strength characteristics by using the first bending layer 20 and the second bending layer 30, so that the flexible circuit board protective layer 3 and the flexible circuit board are protected.
  • the bending performance of the flexible circuit board 2 between the layers 3 is greatly improved, and the flexible circuit board protective layer 3 can effectively protect the flexible circuit board 2, and can prevent the flexible circuit board 2 from being damaged during bending, and the OLED display device can be improved.
  • the flexural performance of the flexible circuit board bonding region prevents the flexible circuit board 2 from being damaged by external force during the production and transportation of the OLED display device, thereby improving the quality of the product.
  • the flexible circuit board protective layer of the present invention comprises a flexible substrate, a first bending layer disposed on one side of the flexible substrate, and a second bending portion disposed on a side of the first bending layer away from the flexible substrate.
  • a folding layer the first bending layer comprises a plurality of first strip portions arranged in parallel and spaced apart
  • the second bending layer comprises a plurality of second strip portions arranged in parallel and spaced apart, the extending direction of the first strip portion
  • the extension direction of the second strip portion is perpendicular.
  • the flexible circuit board When applied to the OLED display device, the flexible circuit board is disposed between the protective layers of the two flexible circuit boards and disposed on one side of the display panel, and the flexible circuit board can be Effective protection to prevent the flexible circuit board from being damaged during bending, and to avoid damage to the flexible circuit board caused by external force during production and transportation of the OLED display device.
  • the flexible circuit board In the OLED display device of the present invention, the flexible circuit board is effectively protected by the flexible circuit board protective layer to prevent the flexible circuit board from being damaged when bent.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种柔性电路板保护层(3)及OLED显示装置。柔性电路板保护层(3)包括柔性衬底(10)、设于柔性衬底(10)一侧的第一弯折层(20)、设于第一弯折层(20)远离柔性衬底(10)一侧的第二弯折层(30)，第一弯折层(20)包括平行且间隔排列的多个第一条形部(21)，第二弯折层(30)包括平行且间隔排列的多个第二条形部(31)，第一条形部(21)的延伸方向与第二条形部(31)的延伸方向相垂直，当应用于OLED显示装置中时，将柔性电路板(2)设置在两层柔性电路板保护层(3)之间后设置在显示面板(1)的一侧，能够对柔性电路板(2)进行有效保护，防止柔性电路板(2)在弯折时被损坏，并避免在OLED显示装置的生产及运输过程中柔性电路板(2)受到外力而损坏。

Description

柔性电路板保护层及OLED显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种柔性电路板保护层及OLED显示装置。
背景技术
有机发光二极管显示装置(Organic Light Emitting Display，OLED)具有自发光、驱动电压低、发光效率高、响应时间短、清晰度与对比度高、近180°视角、使用温度范围宽，可实现柔性显示与大面积全色显示等诸多优点，被业界公认为是最有发展潜力的显示装置。
OLED按照驱动方式可以分为无源矩阵型OLED(Passive Matrix OLED，PMOLED)和有源矩阵型OLED(Active Matrix OLED，AMOLED)两大类，即直接寻址和薄膜晶体管(TFT)矩阵寻址两类。其中，AMOLED具有呈阵列式排布的像素，属于主动显示类型，发光效能高，通常用作高清晰度的大尺寸显示装置。
OLED器件通常包括：基板、设于基板上的阳极、设于阳极上的空穴注入层、设于空穴注入层上的空穴传输层、设于空穴传输层上的发光层、设于发光层上的电子传输层、设于电子传输层上的电子注入层、及设于电子注入层上的阴极。OLED器件的发光原理为半导体材料和有机发光材料在电场驱动下，通过载流子注入和复合导致发光。具体的，OLED器件通常采用氧化铟锡(ITO)电极和金属电极分别作为器件的阳极和阴极，在一定电压驱动下，电子和空穴分别从阴极和阳极注入到电子传输层和空穴传输层，电子和空穴分别经过电子传输层和空穴传输层迁移到发光层，并在发光层中相遇，形成激子并使发光分子激发，后者经过辐射弛豫而发出可见光。
现有的柔性AMOLED显示装置的设计架构中，因配合窄边框的需求，会将显示面板上黏结柔性电路板的区域进行弯折，以减少非显示区域的面积，达到提高屏占比的目的，然而，黏结柔性电路板的区域在弯折后，容易发生微裂痕、电路断裂或剥离，同时该部分在产品的生产及运输过程中也会因强度不足而发生微裂痕或剥离，均会导致AMOLED显示装置显示不良，针对这一问题，现有技术会在显示面板上于黏结柔性电路板的区域涂布紫外光(UV)固化胶或塔菲(Tuffy)胶对柔性电路板进行保护，然而大 面积涂胶的均匀性不好控制，容易发生溢胶现象，且受制于涂布厚度的限制及胶材强度的限制，为保证保护效果合格，胶层一般具有较大的厚度，影响弯折性。
发明内容
本发明的目的在于提供一种柔性电路板保护层，能够对柔性电路板进行有效保护，防止柔性电路板在弯折时被损坏。
本发明的另一目的在于提供一种OLED显示装置，利用柔性电路板保护层对柔性电路板进行有效保护，防止柔性电路板在弯折时被损坏。
为实现上述目的，本发明首先提供一种柔性电路板保护层，包括柔性衬底、设于柔性衬底一侧的第一弯折层、设于第一弯折层远离柔性衬底一侧的第二弯折层；
所述第一弯折层包括平行且间隔排列的多个第一条形部；
所述第二弯折层包括平行且间隔排列的多个第二条形部；
所述第一条形部的延伸方向与第二条形部的延伸方向相垂直。
所述第一弯折层的材料为玻璃纤维及不织布中的至少一种；
所述第二弯折层的材料为玻璃纤维及不织布中的至少一种。
所述柔性衬底的材料为有机高分子材料。
所述第一条形部的形状为矩形；所述第二条形部的形状为矩形。
本发明还提供一种OLED显示装置，包括显示面板、设于显示面板一侧的柔性电路板以及两层上述的柔性电路板保护层；
该两层柔性电路板保护层分别设于柔性电路板靠近显示面板一侧及远离显示面板一侧。
可选地，每一柔性电路板保护层的第一弯折层均设于其柔性衬底靠近柔性电路板的一侧。
可选地，每一柔性电路板保护层的第一弯折层均设于其柔性衬底远离柔性电路板的一侧。
可选地，设于柔性电路板远离显示面板一侧的柔性电路板保护层的第一弯折层设于其柔性衬底靠近柔性电路板的一侧；
设于柔性电路板靠近显示面板一侧的柔性电路板保护层的第一弯折层设于其柔性衬底远离柔性电路板的一侧。
可选地，设于柔性电路板远离显示面板一侧的柔性电路板保护层的第一弯折层设于其柔性衬底远离柔性电路板的一侧；
设于柔性电路板靠近显示面板一侧的柔性电路板保护层的第一弯折层 设于其柔性衬底靠近柔性电路板的一侧。
所述两个柔性电路板保护层的第一弯折层的材料不同；
所述两个柔性电路板保护层的第二弯折层的材料不同。
本发明还提供一种柔性电路板保护层，包括柔性衬底、设于柔性衬底一侧的第一弯折层、设于第一弯折层远离柔性衬底一侧的第二弯折层；
所述第一弯折层包括平行且间隔排列的多个第一条形部；
所述第二弯折层包括平行且间隔排列的多个第二条形部；
所述第一条形部的延伸方向与第二条形部的延伸方向相垂直；
其中，所述第一弯折层的材料为玻璃纤维及不织布中的至少一种；
所述第二弯折层的材料为玻璃纤维及不织布中的至少一种；
其中，所述柔性衬底的材料为有机高分子材料；
其中，所述第一条形部的形状为矩形；所述第二条形部的形状为矩形。
本发明的有益效果：本发明提供的一种柔性电路板保护层，包括柔性衬底、设于柔性衬底一侧的第一弯折层、设于第一弯折层远离柔性衬底一侧的第二弯折层，第一弯折层包括平行且间隔排列的多个第一条形部，第二弯折层包括平行且间隔排列的多个第二条形部，第一条形部的延伸方向与第二条形部的延伸方向相垂直，当应用于OLED显示装置中时，将柔性电路板设置在两层柔性电路板保护层之间后设置在显示面板的一侧，能够对柔性电路板进行有效保护，防止柔性电路板在弯折时被损坏，并避免在OLED显示装置的生产及运输过程中柔性电路板受到外力而损坏。本发明提供的一种OLED显示装置，利用柔性电路板保护层对柔性电路板进行有效保护，防止柔性电路板在弯折时被损坏。
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为本发明的柔性电路板保护层的俯视示意图；
图2为沿图1中的A-A’线的剖视示意图；
图3为本发明的OLED显示装置的第一实施例的结构示意图；
图4为本发明的OLED显示装置的第二实施例的结构示意图；
图5为本发明的OLED显示装置的第三实施例的结构示意图；
图6为本发明的OLED显示装置的第四实施例的结构示意图。
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1及图2，本发明提供一种柔性电路板保护层，包括柔性衬底10、设于柔性衬底10一侧的第一弯折层20、设于第一弯折层20远离柔性衬底10一侧的第二弯折层30；
所述第一弯折层20包括平行且间隔排列的多个第一条形部21；
所述第二弯折层30包括平行且间隔排列的多个第二条形部31；
所述第一条形部21的延伸方向与第二条形部31的延伸方向相垂直。
具体地，所述第一弯折层20的材料及第二弯折层30的材料均选择弯折性能好及容易加工的材料，例如，所述第一弯折层20的材料可以但不限于为玻璃纤维及不织布中的至少一种，所述第二弯折层30的材料可以但不限于为玻璃纤维及不织布中的至少一种。
具体地，所述第一弯折层20的材料与第二弯折层30的材料可以相同，也可以不同，且第一弯折层20的材料及第二弯折层30的材料强度根据产品的具体需求进行设计即可。
具体地，所述柔性衬底10的材料选择弯折性能好及容易加工的材料，可选择有机高分子材料，例如聚酰亚胺(PI)等耐高温的树脂材料。
具体地，所述第一条形部21的形状及尺寸以及所述第二条形部31的形状及尺寸可根据产品的弯折性能需求进行设计，例如在图1所示的实施例中，所述第一条形部21的形状为矩形，所述第二条形部31的形状也为矩形。
需要说明的是，本发明的柔性电路板保护层在应用于OLED显示装置中时，将柔性电路板夹设于两层本发明的柔性电路板保护层之间而形成三层结构，将该三层结构设置在显示面板的一侧的柔性电路板黏结区域内，该黏结区域也即用于实现窄边框而设置的弯折区，通过设置具有多个第一条形部21的第一弯折层20及具有多个延伸方向垂直于第一条形部21的第二条形部31的第二弯折层30，利用第一弯折层20及第二弯折层30具有不同的结构强度的特性，使得柔性电路板保护层及夹于柔性电路板保护层之间的柔性电路板的弯折性能大大提升，且柔性电路板保护层能够对柔性电路板进行有效保护，能够防止柔性电路板在弯折时被损坏，提升OLED显示装置的柔性电路板黏结区的弯折性能，并避免在OLED显示装置的生产及运输过程中柔性电路板受到外力而损坏，提升产品的品质。
基于同一发明构思，本发明还提供一种OLED显示装置，请参阅图3，并结合图1及图2，为本发明的柔性显示装置的第一实施例，本发明的OLED显示装置包括显示面板1、设于显示面板1一侧的柔性电路板2以及两层的柔性电路板保护层3；
该两层柔性电路板保护层3分别设于柔性电路板2靠近显示面板1一侧及远离显示面板1一侧。
具体地，请参阅图1及图2，所述柔性电路板保护层3包括柔性衬底10、设于柔性衬底10一侧的第一弯折层20、设于第一弯折层20远离柔性衬底10一侧的第二弯折层30；
所述第一弯折层20包括平行且间隔排列的多个第一条形部21；
所述第二弯折层30包括平行且间隔排列的多个第二条形部31；
所述第一条形部21的延伸方向与第二条形部31的延伸方向相垂直。
具体地，所述第一弯折层20的材料及第二弯折层30的材料均选择弯折性能好及容易加工的材料，例如，所述第一弯折层20的材料可以但不限于为玻璃纤维及不织布中的至少一种，所述第二弯折层30的材料可以但不限于为玻璃纤维及不织布中的至少一种。
具体地，所述第一弯折层20的材料与第二弯折层30的材料可以相同，也可以不同，且第一弯折层20的材料及第二弯折层30的材料强度根据产品的具体需求进行设计即可。
具体地，所述柔性衬底10的材料选择弯折性能好及容易加工的材料，可选择有机高分子材料，例如聚酰亚胺(PI)等耐高温的树脂材料。
具体地，所述第一条形部21的形状及尺寸以及所述第二条形部31的形状及尺寸可根据产品的弯折性能需求进行设计，例如在图1所示的实施例中，所述第一条形部21的形状为矩形，所述第二条形部31的形状也为矩形。
具体地，所述显示面板1上设有柔性电路板黏结区域，也即用于实现窄边框而设置的弯折区，所述柔性电路板2及设置在其两侧的两层柔性电路板保护层3均设置在该柔性电路板黏结区域内。
具体地，请参阅图3，在本发明OLED显示装置的第一实施例中，每一柔性电路板保护层3的第一弯折层20均设于其柔性衬底10靠近柔性电路板2的一侧，进而每一柔性电路板保护层3的第二弯折层30均设于其第一弯折层20靠近柔性电路板2的一侧。
具体地，所述两个柔性电路板保护层3的第一弯折层20的材料、第二弯折层30的材料及柔性衬底10的材料可以相同也可以不同，可根据具体 的产品需求进行调整。
请参阅图4，为本发明的OLED显示装置的第二实施例，该第二实施例与上述第一实施例的区别在于，每一柔性电路板保护层3的第一弯折层20均设于其柔性衬底10远离柔性电路板2的一侧，进而每一柔性电路板3的第二弯折层30均设于其第一弯折层20远离柔性电路板2的一侧，其余均与第一实施例相同，在此不再赘述。
请参阅图5，为本发明的OLED显示装置的第三实施例，该第三实施例与上述第一实施例的区别在于，设于柔性电路板2靠近显示面板1一侧的柔性电路板保护层3的第一弯折层20设于其柔性衬底10远离柔性电路板2的一侧，进而设于柔性电路板2靠近显示面板1一侧的柔性电路板保护层3的第二弯折层30设于其第一弯折层20远离柔性电路板2的一侧，其余均与第一实施例相同，在此不再赘述。
请参阅图6，为本发明的OLED显示装置的第四实施例，该第四实施例与上述第一实施例的区别在于，设于柔性电路板2远离显示面板1一侧的柔性电路板保护层3的第一弯折层20设于其柔性衬底10远离柔性电路板2的一侧，进而设于柔性电路板2远离显示面板1一侧的柔性电路板保护层3的第二弯折层30设于其第一弯折层20远离柔性电路板2的一侧，其余均与第一实施例相同，在此不再赘述。
需要说明的是，本发明的OLED显示装置中，将柔性电路板2夹设于两层的柔性电路板保护层3之间而形成三层结构，将该三层结构设置在显示面板1的一侧的柔性电路板黏结区域内，通过在柔性电路板保护层3中设置具有多个第一条形部21的第一弯折层20及具有多个延伸方向垂直于第一条形部21的第二条形部31的第二弯折层30，利用第一弯折层20及第二弯折层30具有不同的结构强度的特性，使得柔性电路板保护层3及夹于柔性电路板保护层3之间的柔性电路板2的弯折性能大大提升，且柔性电路板保护层3能够对柔性电路板2进行有效保护，能够防止柔性电路板2在弯折时被损坏，提升OLED显示装置的柔性电路板黏结区的弯折性能，并避免在OLED显示装置的生产及运输过程中柔性电路板2受到外力而损坏，提升产品的品质。
综上所述，本发明的柔性电路板保护层，包括柔性衬底、设于柔性衬底一侧的第一弯折层、设于第一弯折层远离柔性衬底一侧的第二弯折层，第一弯折层包括平行且间隔排列的多个第一条形部，第二弯折层包括平行且间隔排列的多个第二条形部，第一条形部的延伸方向与第二条形部的延伸方向相垂直，当应用于OLED显示装置中时，将柔性电路板设置在两层 柔性电路板保护层之间后设置在显示面板的一侧，能够对柔性电路板进行有效保护，防止柔性电路板在弯折时被损坏，并避免在OLED显示装置的生产及运输过程中柔性电路板受到外力而损坏。本发明的OLED显示装置，利用柔性电路板保护层对柔性电路板进行有效保护，防止柔性电路板在弯折时被损坏。
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 (11)

  1. 一种柔性电路板保护层，包括柔性衬底、设于柔性衬底一侧的第一弯折层、设于第一弯折层远离柔性衬底一侧的第二弯折层；
    所述第一弯折层包括平行且间隔排列的多个第一条形部；
    所述第二弯折层包括平行且间隔排列的多个第二条形部；
    所述第一条形部的延伸方向与第二条形部的延伸方向相垂直。
  2. 如权利要求1所述的柔性电路板保护层，其中，所述第一弯折层的材料为玻璃纤维及不织布中的至少一种；
    所述第二弯折层的材料为玻璃纤维及不织布中的至少一种。
  3. 如权利要求1所述的柔性电路板保护层，其中，所述柔性衬底的材料为有机高分子材料。
  4. 如权利要求1所述的柔性电路板保护层，其中，所述第一条形部的形状为矩形；所述第二条形部的形状为矩形。
  5. 一种OLED显示装置，包括显示面板、设于显示面板一侧的柔性电路板以及两层如权利要求1所述的柔性电路板保护层；
    该两层柔性电路板保护层分别设于柔性电路板靠近显示面板一侧及远离显示面板一侧。
  6. 如权利要求5所述的OLED显示装置，其中，每一柔性电路板保护层的第一弯折层均设于其柔性衬底靠近柔性电路板的一侧。
  7. 如权利要求5所述的OLED显示装置，其中，每一柔性电路板保护层的第一弯折层均设于其柔性衬底远离柔性电路板的一侧。
  8. 如权利要求5所述的OLED显示装置，其中，设于柔性电路板远离显示面板一侧的柔性电路板保护层的第一弯折层设于其柔性衬底靠近柔性电路板的一侧；
    设于柔性电路板靠近显示面板一侧的柔性电路板保护层的第一弯折层设于其柔性衬底远离柔性电路板的一侧。
  9. 如权利要求5所述的OLED显示装置，其中，设于柔性电路板远离显示面板一侧的柔性电路板保护层的第一弯折层设于其柔性衬底远离柔性电路板的一侧；
    设于柔性电路板靠近显示面板一侧的柔性电路板保护层的第一弯折层设于其柔性衬底靠近柔性电路板的一侧。
  10. 如权利要求5所述的OLED显示装置，其中，所述两个柔性电路 板保护层的第一弯折层的材料不同；
    所述两个柔性电路板保护层的第二弯折层的材料不同。
  11. 一种柔性电路板保护层，包括柔性衬底、设于柔性衬底一侧的第一弯折层、设于第一弯折层远离柔性衬底一侧的第二弯折层；
    所述第一弯折层包括平行且间隔排列的多个第一条形部；
    所述第二弯折层包括平行且间隔排列的多个第二条形部；
    所述第一条形部的延伸方向与第二条形部的延伸方向相垂直；
    其中，所述第一弯折层的材料为玻璃纤维及不织布中的至少一种；
    所述第二弯折层的材料为玻璃纤维及不织布中的至少一种；
    其中，所述柔性衬底的材料为有机高分子材料；
    其中，所述第一条形部的形状为矩形；所述第二条形部的形状为矩形。
PCT/CN2018/076948 2017-12-29 2018-02-22 柔性电路板保护层及oled显示装置 WO2019127880A1 (zh)

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CN112867378B (zh) * 2021-01-08 2022-11-08 武汉华星光电半导体显示技术有限公司 电磁屏蔽膜、显示面板及显示装置
CN112991946B (zh) * 2021-02-23 2023-04-07 京东方科技集团股份有限公司 显示面板和显示装置

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