WO2019095464A1 - 柔性电路板及显示屏 - Google Patents

柔性电路板及显示屏 Download PDF

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Publication number
WO2019095464A1
WO2019095464A1 PCT/CN2017/114930 CN2017114930W WO2019095464A1 WO 2019095464 A1 WO2019095464 A1 WO 2019095464A1 CN 2017114930 W CN2017114930 W CN 2017114930W WO 2019095464 A1 WO2019095464 A1 WO 2019095464A1
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WIPO (PCT)
Prior art keywords
bending
circuit board
flexible circuit
functional layer
protective layer
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PCT/CN2017/114930
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English (en)
French (fr)
Inventor
吴嘉树
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武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US15/744,222 priority Critical patent/US20190159335A1/en
Publication of WO2019095464A1 publication Critical patent/WO2019095464A1/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
    • 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
    • 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

Definitions

  • the present application belongs to the field of display technologies, and in particular, to a flexible circuit board and a display screen.
  • a flexible circuit board is used to bond with the display panel and bend the flexible circuit board, thereby reducing the length of the display-free area and achieving a high aspect ratio. Claim.
  • the flexible circuit board is prone to micro-cracks after bending, the circuit is broken or the circuit is peeled off, resulting in poor display of the flexible AMOLED display.
  • a photosensitive adhesive or a Tafel adhesive is applied to a bonding region and a bent region of a flexible circuit board to prevent defects of the flexible circuit board after bending.
  • the coating uniformity of a large area is not well controlled, the thickness of the coating is limited, the thickness is too thick, the bending is not easy, and the strength of the glue is limited.
  • the purpose of the application is to provide a flexible circuit board and a display screen, which make the flexible circuit board easier to bend, avoid circuit damage, improve the strength of the flexible circuit board, and effectively protect the flexible circuit board.
  • the first aspect of the present application provides a flexible circuit board, comprising a base body and a protective layer, wherein the protective layer is disposed on the base body, and the protective layer comprises a glue layer sequentially disposed on the base body, first a functional layer, a second functional layer, the first functional layer includes two or more first bending strips disposed at intervals, the two or more first bending strips extending in the same direction, the second functional layer And comprising two or more second bending strips arranged at intervals, wherein the two or more second bending strips extend in the same direction, and the extending direction of the two or more first bending strips is different from the two or more The extending direction of the second bending strip is set at an angle.
  • the material of the two or more first bending strips and the two or more second bending strips is a flexible inorganic fiber material and/or a flexible polymer.
  • the flexible inorganic fiber material comprises glass fiber, ceramic fiber or carbon fiber.
  • the flexible polymer comprises PET, PMMA or non-woven fabric.
  • the angle between the extending direction of the first bending strip and the extending direction of the second bending strip is 45°-90°.
  • the bending direction of the first bending strip or the bending direction of the second bending strip is the same as the bending direction of the base body during the bending process of the flexible circuit board.
  • the base body comprises a bending zone
  • the protective layer is disposed above the bending zone.
  • the substrate further comprises a bonding zone for bonding the panel
  • the protective layer has an area larger than an area of the bending zone, and the protective layer extends from the bending zone to the Said bonding area.
  • the number of the first functional layer and the second functional layer are both at least two.
  • a second aspect of the present application provides a display screen comprising the flexible circuit board provided by the first aspect of the present application.
  • a flexible circuit board provided by the first aspect of the present invention is disposed on a base of the flexible circuit board on a protective layer having a glue layer, a first functional layer, and a second functional layer, so that the first functional layer and the second functional layer are replaced.
  • the adhesive layer of the prior art partially reduces the thickness of the adhesive layer.
  • the extending direction of the first bending strip and the extending direction of the second bending strip are disposed at an angle, so that when the flexible circuit board is bent, the first bending strip or the second bending belt is close to the bending direction
  • the other first bending strip or the second bending strip serves to fix, protect and strengthen the flexible circuit board.
  • the display screen provided by the second aspect of the present application can make the flexible circuit board more bendable, avoid the damage of the circuit, improve the strength of the flexible circuit board, effectively protect the flexible circuit board, and improve the quality of the display screen. .
  • FIG. 1 is a schematic structural view of a flexible circuit board according to an embodiment of the present application.
  • FIG. 2 is a schematic structural view of a protective layer in an embodiment of the present application.
  • the first aspect of the present application provides a flexible circuit board 100 including a base 1 and a protective layer 2 .
  • the protective layer 2 is disposed on the base 1 , and the protective layer is provided. 2 can be disposed on a single side of the substrate 1, and the protective layer 2 can also be disposed on opposite sides of the substrate 1, so that the protection effect of the substrate 1 is better.
  • the protective layer 2 includes a glue layer 21, a first functional layer 22, and a second functional layer 23 which are sequentially laminated on the substrate 1.
  • the first functional layer 22 includes two or more first bending strips 221 which are spaced apart, the two or more first bending strips 221 extend in the same direction, and the second functional layer 23 includes an interval.
  • the extending direction of the second bending strip 231 is angular.
  • the number and width of the first bending strip 221 and the second bending strip 231, the spacing between the first bending strips 221, the spacing between the second bending strips 231, and the first bending strip 221 It is related to the material of the second bending strip 231.
  • the protective layer 2 having the adhesive layer 21, the first functional layer 22 and the second functional layer 23 is disposed on the base 1 of the flexible circuit board 100, so that the first functional layer 22 and the second functional layer 23 are replaced by the prior art.
  • the partial adhesive layer 21 reduces the thickness and the number of the adhesive layer 21 to prevent the occurrence of the overflow phenomenon, and the thickness of the flexible circuit board 100 is more easily bent after the thickness is lowered, and the microcircuit cracking of the flexible wiring board 100 or the circuit breakage or the circuit board 100 can be prevented. Stripped.
  • the extending direction of the two or more first bending strips 221 is disposed at an angle to the extending direction of the two or more second bending strips 231.
  • the first bending strip 221 and the second bending strip 231 are prepared from a material that is easily bent, the angle between the bending direction and the bending direction is small.
  • the first bending strip 221 or the second bending strip 231 acts to promote bending of the flexible circuit board 100, and the other first bending strip 221 or the second bending strip 231 can be fixed, protected and strengthened.
  • the role of the flexible circuit board 100 Microcracking or peeling of the flexible circuit board 100 due to insufficient strength during transportation or use can be prevented.
  • the material of the first bending strip 221 and the second bending strip 231 is a flexible inorganic fiber material and/or a flexible polymer.
  • the first bending strip 221 and the second bending strip 231 have a certain strength and also have the characteristics of being easily bent.
  • the materials of the first bending strip 221 and the second bending strip 231 may each be selected from a flexible inorganic fiber material or a flexible polymer; the material of the first bending strip 221 is flexible.
  • the inorganic fiber material, the material of the second bending strip 231 is a flexible polymer; the material of the first bending strip 221 is a flexible polymer, and the material of the second bending strip 231 is a flexible inorganic fiber material.
  • the flexible inorganic fiber material includes, but is not limited to, glass fiber, ceramic fiber or carbon fiber; the flexible polymer includes PET, PMMA or non-woven fabric, but is not limited thereto; the material of the rubber layer includes UV glue or Tuffy glue, but not limited to this.
  • an angle between the extending direction of the first bending strip 221 and the extending direction of the second bending strip 231 is 45°-90°.
  • an angle between the extending direction of the first bending strip 221 and the extending direction of the second bending strip 231 is 45°, 60° or 90°.
  • the extending direction of the first bending strip 221 and the extending direction of the second bending strip 231 are 90°.
  • the bending direction of the first bending strip 221 or the bending direction of the second bending strip 231 is opposite to the base 1
  • the direction of the bend is the same.
  • the bending direction of the first bending belt 221 is the same as the bending direction of the base body 1 or the bending direction of the second bending belt 231 is the same as the bending direction of the base body 1.
  • the extending direction of the second bending strip 231 and the extending direction of the first bending strip 221 are mutually Vertical setting.
  • the extending direction of the second bending strip 231 is the same as the bending direction of the base body 1, the extending direction of the first bending strip 221 and the extending direction of the two bending strips 231 are perpendicular to each other.
  • the first bending belt 221 or the second bending belt 231 having the same bending direction replaces the partial rubber layer 21 by the easily bendable material, so that the first bending belt
  • the second bending belt 231 or the second bending belt 231 is more easily bent, and the other layer can function to fix the first bending belt 221 or the second bending belt 231 in the same direction as the bending direction, and can also be improved.
  • the strength of the flexible circuit board 100 effectively protects the flexible circuit board 100.
  • the base body 1 includes a bending zone 11 , and the protective layer 2 is disposed above the bending zone 11 .
  • the protective layer 2 is bent in the bending zone 11, the bending zone 11 can be bent more easily than in the prior art, and the strength of the bending zone 11 can be increased, so that the bending zone 11 can be effectively protected.
  • the base 1 further includes a bonding area 12 for bonding the panel to connect the flexible circuit board 100 to the panel.
  • the area of the protective layer 2 is larger than the area of the bending zone 11, and the protective layer 2 extends from the bending zone 11 to the bonding zone 12.
  • the protective layer 2 is placed over the bending zone 11 and the bonding zone 12.
  • the surfaces of the first bending strip 221 and the second bending strip 231 have a viscous material so that the protective layer 2 of the bonding zone 12 can be firmly bonded to the panel.
  • the number of the first functional layer 22 and the second functional layer 23 are both at least two.
  • the material bending toughness of the first bending strip 221 of the first functional layer 22 and the second bending strip 231 of the second functional layer 23 is greater or lower, preferably, the first functional layer The number of 22 and the second functional layer 23 is two or three. In this way, the strength of the protective layer 2 is increased or the bending performance is achieved to the extent required by the user.
  • a second aspect of the present application provides a display screen comprising the flexible circuit board 100 as provided by the first aspect.
  • the flexible circuit board 100 can be more easily bent, and the flexible circuit board 100 can be effectively protected while the circuit is damaged, thereby improving the quality of the display.
  • the flexible circuit board 100 includes a base 1 and a protective layer 2, the base 1 is divided into a bending zone 11 and a bonding zone 12, and the protective layer 2 is sequentially stacked on the bending zone 11 And a UV adhesive layer 21, a first functional layer 22, and a second functional layer 23 over the bonding region 12.
  • the first functional layer 22 is six first bending strips 221 that are spaced apart. The extending direction and the bending direction of the first bending strip 221 are the same as the bending direction of the base 1 (as shown in FIG. 2).
  • the material of the first bending strip 221 is glass fiber.
  • the second functional layer 23 is five second bending strips 231 which are spaced apart from each other.
  • the extending direction of the second bending strip 231 is perpendicular to the extending direction of the first bending strip 221 .
  • the material of the second bending strip 231 is a non-woven fabric.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Laminated Bodies (AREA)

Abstract

一种柔性电路板（100），包括基体（1）、保护层（2），保护层（2）设置于基体（1）之上，保护层（2）包括依次层叠设置于基体（1）上的胶层（21）、第一功能层（22）、第二功能层（23），第一功能层（22）包括间隔设置的两个以上的第一弯折带（221），两个以上的第一弯折带（221）的延伸方向相同，第二功能层（23）包括间隔设置的两个以上的第二弯折带（231），两个以上的第二弯折带（231）的延伸方向相同，两个以上的第一弯折带（221）的延伸方向与两个以上的第二弯折带（231）的延伸方向呈角度设置。因此，柔性电路板（100）在更易弯折的同时，提高柔性电路板（100）的强度，有效地保护了柔性电路板（100）。

Description

柔性电路板及显示屏
本申请要求2017年11月20日递交的发明名称为“柔性电路板及显示屏”的申请号201711169904.7的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本申请属于显示技术领域，具体涉及柔性电路板及显示屏。
背景技术
目前在柔性AMOLED显示屏的设计中，为了实现窄边框的目的，现采用软性电路板与显示面板粘结并弯折软性电路板，以此来减少无显示区的长度，达到高占屏比的要求。但是软性电路板在弯折后易产生微裂纹，电路断裂或者电路剥离，导致柔性AMOLED显示屏显示不良。
现有技术中在软性电路板的粘结区域和弯折区域涂布光敏胶或者塔菲胶，以此来防止软性电路板在弯折后产生的缺陷。但大面积的涂布均匀性不好控制，涂布的厚度有限制，厚度太厚不易弯折及胶的强度有限制等。
发明内容
本申请的目的在于提供一种柔性电路板及显示屏，使柔性电路板更易弯折，避免电路受损，提高柔性电路板的强度，有效地保护柔性电路板。
本申请第一方面提供了一种柔性电路板，包括基体、保护层，所述保护层设置于所述基体之上，所述保护层包括依次层叠设置于所述基体上的胶层、第 一功能层、第二功能层，所述第一功能层包括间隔设置的两个以上的第一弯折带，所述两个以上的第一弯折带的延伸方向相同，所述第二功能层包括间隔设置的两个以上的第二弯折带，所述两个以上的第二弯折带的延伸方向相同，所述两个以上的第一弯折带的延伸方向与所述两个以上的第二弯折带的延伸方向呈角度设置。
其中，所述两个以上的第一弯折带和所述两个以上的第二弯折带的材质为柔性无机纤维材料和/或柔性聚合物。
其中，所述柔性无机纤维材料包括玻璃纤维、陶瓷纤维或碳纤维。
其中，所述柔性聚合物包括PET、PMMA或不织布。
其中，所述第一弯折带的延伸方向与所述第二弯折带的延伸方向所呈的角度为45°-90°。
其中，所述柔性电路板弯折的过程中，所述第一弯折带的弯折方向或所述第二弯折带的弯折方向与所述基体的弯折方向相同。
其中，所述基体包括弯折区，所述保护层设置于所述弯折区之上。
其中，所述基体还包括粘结区，所述粘结区用于粘结面板，所述保护层的面积大于所述弯折区的面积，所述保护层从所述弯折区延伸至所述粘结区。
其中，所述第一功能层和所述第二功能层的数量均为至少两个。
本申请第二方面提供了一种显示屏，包括本申请第一方面提供的柔性电路板。
本申请第一方面提供的一种柔性电路板，在柔性电路板的基体上设置于具有胶层、第一功能层、第二功能层的保护层，使第一功能层、第二功能层代替了现有技术中部分的胶层，使胶层的厚度下降。并且第一弯折带的延伸方向和 第二弯折带的延伸方向是呈角度设置的，使柔性电路板在弯折时，靠近弯折方向的第一弯折带或第二弯折带起到促进柔性电路板弯折的作用，而相对的，另外的第一弯折带或第二弯折带起到固定，保护，强化柔性电路板的作用。本申请第二发面提供的一种显示屏，可使柔性电路板更易弯折，避免电路受损的同时提高了柔性电路板的强度，有效地保护了柔性电路板，提高了显示屏的质量。
附图说明
为了更清楚地说明本申请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地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，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为本申请实施方式中柔性电路板的结构示意图；
图2为本申请实施方式中保护层的结构示意图。
具体实施方式
以下所述是本申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本申请的保护范围。
请一并参阅图1-图2，本申请第一方面提供了一种柔性电路板100，包括基体1、保护层2，所述保护层2设置于所述基体1之上，所述保护层2可以设置于所述基体1上单独的一侧，所述保护层2也可以设置于所述基体1上的相对的两侧，使基体1的保护效果更佳。所述保护层2包括依次层叠设置于所 述基体1上的胶层21、第一功能层22、第二功能层23。所述第一功能层22包括间隔设置的两个以上的第一弯折带221，所述两个以上的第一弯折带221的延伸方向相同，所述第二功能层23包括间隔设置的两个以上的第二弯折带231，所述两个以上的第二弯折带231的延伸方向相同，所述两个以上的第一弯折带221的延伸方向与所述两个以上的第二弯折带231的延伸方向呈角度设置。所述第一弯折带221和所述第二弯折带231的数量、宽度、第一弯折带221之间的间距、第二弯折带231之间的间距与第一弯折带221和第二弯折带231的材料有关。
在柔性电路板100的基体1上设置于具有胶层21、第一功能层22、第二功能层23的保护层2，使第一功能层22、第二功能层23代替了现有技术中部分的胶层21，使胶层21的厚度、数量下降，防止溢胶现象的产生，而且厚度降低后使柔性电路板100更易弯折，并且可以防止柔性线路板100产生微裂纹、电路断裂或剥离。所述两个以上的第一弯折带221的延伸方向与所述两个以上的第二弯折带231的延伸方向呈角度设置。因此柔性电路板100在弯折时，由于第一弯折带221和第二弯折带231是由易弯折的材料制备而成的，因此靠近弯折方向、与弯折方向夹角较小的第一弯折带221或第二弯折带231起到促进柔性电路板100弯折的作用，而另外的第一弯折带221或第二弯折带231可以起到固定，保护，强化柔性电路板100的作用。可以防止柔性电路板100在运输或使用过程中因强度不足而产生的微裂纹或剥离。
本申请实施方式中，所述第一弯折带221和所述第二弯折带231的材料为柔性无机纤维材料和/或柔性聚合物。使所述第一弯折带221和所述第二弯折带231具有一定强度的同时，也具有易弯折的特性。
本申请实施方式中，所述第一弯折带221和所述第二弯折带231的材料可均选自柔性无机纤维材料或柔性聚合物；所述第一弯折带221的材料为柔性无机纤维材料，所述第二弯折带231的材料为柔性聚合物；所述第一弯折带221的材料为柔性聚合物，所述第二弯折带231的材料为柔性无机纤维材料。
本申请实施方式中，所述柔性无机纤维材料包括玻璃纤维、陶瓷纤维或碳纤维，但不限于此；所述柔性聚合物包括PET、PMMA或不织布，但不限于此；所述胶层的材质包括UV胶或Tuffy胶，但不限于此。
本申请实施方式中，所述第一弯折带221的延伸方向与所述第二弯折带231的延伸方向所呈的角度为45°-90°。优选地，所述第一弯折带221的延伸方向与所述第二弯折带231的延伸方向所呈的角度为45°，60°或90°。具体地，在本申请一实施方式中所述第一弯折带221的延伸方向与所述第二弯折带231的延伸方向所呈的角度为90°设置。
本申请实施方式中，在所述柔性电路板100弯折的过程中，所述第一弯折带221的弯折方向或所述第二弯折带231的弯折方向与所述基体1的弯折方向相同。优选地，所述第一弯折带221的弯折方向与基体1的弯折方向相同或所述第二弯折带231的弯折方向与所述基体1的弯折方向相同。
优选地，当所述第一弯折带221的弯折方向与基体1的弯折方向相同时，所述第二弯折带231的延伸方向与所述第一弯折带221的延伸方向互相垂直设置。或者当所述第二弯折带231的弯折方向与基体1的弯折方向相同时，所述第一弯折带221的延伸方向与所述二弯折带231的延伸方向互相垂直设置。当柔性电路板进行弯折时，与弯折方向相同的第一弯折带221或所述第二弯折带231由于由易弯折材料代替了部分的胶层21，使第一弯折带221或第二弯折带 231更加易于弯折，而另外的一层可以起到固定与弯折方向相同的第一弯折带221或所述第二弯折带231的作用，而且还可以提高柔性电路板100的强度，有效地保护柔性电路板100。
本申请实施方式中，所述基体1包括弯折区11，所述保护层2设置于所述弯折区11之上。使保护层2在弯折区11弯折的时候，既可以使弯折区11比现有技术更易弯折，还可以使弯折区11的强度增加，使弯折区11得到有效地保护。
本申请实施方式中，所述基体1还包括粘结区12，所述粘结区12用于粘结面板，使柔性电路板100与面板相连接。所述保护层2的面积大于所述弯折区11的面积，所述保护层2从所述弯折区11延伸至所述粘结区12。使所述保护层2设置于弯折区11和粘结区12之上。优选地，所述第一弯折带221和所述第二弯折带231表面具有粘性材料，使粘结区12的保护层2可以与面板进行牢固地粘结。
本申请实施方式中，所述第一功能层22和所述第二功能层23的数量均为至少两个。当所述第一功能层22的第一弯折带221和所述第二功能层23的第二弯折带231的材料韧性较大或强度较低时，优选地，所述第一功能层22和所述第二功能层23的数量均为2个或3个。以此来提高保护层2的强度或使弯折性能达到用户需求的程度。
本申请第二方面提供了一种显示屏，包括如第一方面所提供的柔性电路板100。可使柔性电路板100更易弯折，避免电路受损的同时有效地保护柔性电路板100，提高显示屏的质量。
具体地，本申请一实施方式中，所述柔性电路板100包括基体1和保护层 2，基体1分为弯折区11和粘结区12，保护层2包括依次层叠设置于弯折区11和粘结区12之上的UV胶层21、第一功能层22、第二功能层23。第一功能层22为间隔设置的6个第一弯折带221。第一弯折带221的延伸方向和弯折方向与基体1的弯折方向(如图2所示)相同。第一弯折带221的材质为玻璃纤维。第二功能层23为间隔设置的5个第二弯折带231，第二弯折带231的延伸方向与第一弯折带221的延伸方向互相垂直设置。第二弯折带231的材质为不织布。当柔性电路板进行弯折时，第一弯折带221在力的作用下进行弯折，而第二弯折带231则在固定第一弯折带221的同时，提高柔性电路板100的强度。
以上对本申请实施方式所提供的柔性电路板及显示屏进行了详细介绍，本文对本申请的原理及实施方式进行了阐述，以上实施方式的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (18)

  1. 一种柔性电路板，其中，包括基体、保护层，所述保护层设置于所述基体之上，所述保护层包括依次层叠设置于所述基体上的胶层、第一功能层、第二功能层，所述第一功能层包括间隔设置的两个以上的第一弯折带，所述两个以上的第一弯折带的延伸方向相同，所述第二功能层包括间隔设置的两个以上的第二弯折带，所述两个以上的第二弯折带的延伸方向相同，所述两个以上的第一弯折带的延伸方向与所述两个以上的第二弯折带的延伸方向呈角度设置。
  2. 如权利要求1所述的柔性电路板，其中，所述两个以上的第一弯折带和所述两个以上的第二弯折带的材质为柔性无机纤维材料和/或柔性聚合物。
  3. 如权利要求2所述的柔性电路板，其中，所述柔性无机纤维材料包括玻璃纤维、陶瓷纤维或碳纤维。
  4. 如权利要求2所述的柔性电路板，其中，所述柔性聚合物包括PET、PMMA或不织布。
  5. 如权利要求1所述的柔性电路板，其中，所述第一弯折带的延伸方向与所述第二弯折带的延伸方向所呈的角度为45°-90°。
  6. 如权利要求1所述的柔性电路板，其中，所述柔性电路板弯折的过程中，所述第一弯折带的弯折方向或所述第二弯折带的弯折方向与所述基体的弯折方向相同。
  7. 如权利要求1所述的柔性电路板，其中，所述基体包括弯折区，所述保护层设置于所述弯折区之上。
  8. 如权利要求7所述的柔性电路板，其中，所述基体还包括粘结区，所述粘结区用于粘结面板，所述保护层的面积大于所述弯折区的面积，所述保护层从所述弯折区延伸至所述粘结区。
  9. 如权利要求1所述的柔性电路板，其中，所述第一功能层和所述第二功能层的数量均为至少两个。
  10. 一种显示屏，包括柔性电路板，其中，所述柔性电路板包括基体、保护层，所述保护层设置于所述基体之上，所述保护层包括依次层叠设置于所述基体上的胶层、第一功能层、第二功能层，所述第一功能层包括间隔设置的两个以上的第一弯折带，所述两个以上的第一弯折带的延伸方向相同，所述第二功能层包括间隔设置的两个以上的第二弯折带，所述两个以上的第二弯折带的延伸方向相同，所述两个以上的第一弯折带的延伸方向与所述两个以上的第二弯折带的延伸方向呈角度设置。
  11. 如权利要求10所述的显示屏，其中，所述两个以上的第一弯折带和所述两个以上的第二弯折带的材质为柔性无机纤维材料和/或柔性聚合物。
  12. 如权利要求11所述的显示屏，其中，所述柔性无机纤维材料包括玻璃纤维、陶瓷纤维或碳纤维。
  13. 如权利要求11所述的显示屏，其中，所述柔性聚合物包括PET、PMMA或不织布。
  14. 如权利要求10所述的显示屏，其中，所述第一弯折带的延伸方向与所述第二弯折带的延伸方向所呈的角度为45°-90°。
  15. 如权利要求10所述的显示屏，其中，所述柔性电路板弯折的过程中，所述第一弯折带的弯折方向或所述第二弯折带的弯折方向与所述基体的弯折 方向相同。
  16. 如权利要求10所述的显示屏，其中，所述基体包括弯折区，所述保护层设置于所述弯折区之上。
  17. 如权利要求16所述的显示屏，其中，所述基体还包括粘结区，所述粘结区用于粘结面板，所述保护层的面积大于所述弯折区的面积，所述保护层从所述弯折区延伸至所述粘结区。
  18. 如权利要求10所述的显示屏，其中，所述第一功能层和所述第二功能层的数量均为至少两个。
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