WO2020006684A1 - Flexible composite film and preparation method therefor, and display apparatus - Google Patents
Flexible composite film and preparation method therefor, and display apparatus Download PDFInfo
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- WO2020006684A1 WO2020006684A1 PCT/CN2018/094324 CN2018094324W WO2020006684A1 WO 2020006684 A1 WO2020006684 A1 WO 2020006684A1 CN 2018094324 W CN2018094324 W CN 2018094324W WO 2020006684 A1 WO2020006684 A1 WO 2020006684A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
Definitions
- the invention relates to the field of display technology, in particular to a flexible composite film, a preparation method thereof and a display device.
- a support film and a composite film having functions such as heat dissipation and electromagnetic shielding are usually provided on one side of a flexible substrate.
- multiple laminations of the composite film and the supporting film need to be laminated in sequence, which is not only complicated in the manufacturing process, but also it is not easy to thin the flexible display device.
- the present invention provides a flexible composite film with a simple preparation process and a thin thickness, and a preparation method thereof.
- the present invention also provides a display device using the flexible composite film.
- the present invention provides a flexible composite film including a flexible functional layer, the flexible functional layer including a flexible base material and a functional material having functions of heat conduction, heat dissipation, and electromagnetic shielding.
- the present invention also provides a method for preparing a flexible composite film, including the following steps: mixing and pressing a flexible substrate material and a functional material with heat conduction, heat dissipation, and electromagnetic shielding functions to prepare a flexible functional layer .
- the present invention also provides another method for preparing a flexible composite film, including the following steps:
- the functional material layer including functional materials with thermal conduction, heat dissipation, and electromagnetic shielding functions;
- the flexible substrate and the functional material layer are laminated to obtain the flexible functional layer.
- the present invention further provides a display device including the above-mentioned flexible composite film and a display structure, wherein the flexible composite film and the display structure are stacked.
- the flexible composite film provided by the present invention, a preparation method and a display device thereof, are integrated with a base material and a functional material having heat conduction, heat dissipation, and electromagnetic shielding functions, so as to obtain a thin and flexible material having heat conduction, heat dissipation, and electromagnetic shielding functions.
- a functional layer and a simple preparation process are integrated with a base material and a functional material having heat conduction, heat dissipation, and electromagnetic shielding functions.
- FIG. 1 is a schematic structural diagram of a flexible composite film provided by a first embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of a flexible functional film of the flexible composite film in FIG. 1.
- FIG. 3 is a schematic structural diagram of a flexible composite film provided by a second embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a first embodiment of a flexible functional film of the flexible composite film in FIG. 3.
- FIG. 5 is a schematic structural diagram of a second embodiment of the flexible functional film of the flexible composite film in FIG. 3.
- FIG. 6 is a schematic structural diagram of a third embodiment of the flexible functional film of the flexible composite film in FIG. 3.
- FIG. 7 is a flowchart of a method for manufacturing the flexible composite film in FIG. 1.
- FIG. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.
- the flexible composite film 1 includes a flexible functional layer 10.
- the flexible functional layer 10 includes a flexible substrate material 101 and a functional material 102 having functions of heat conduction, heat dissipation, and electromagnetic shielding.
- the flexible functional layer 10 has a single-layer structure.
- the flexible base material 101 is, for example, but not limited to, polyethylene terephthalate (PET), polyimide (PI), polycarbonate (PC), and colorless transparent polyimide.
- Amine Colorless Polyimide (CPI), polyethylene terephthalate (PET), polyamide (PA), polyphenylene sulfone (PES), polyethylene naphthalate (polyethylene naphthalate (PEN)), polymethylmethacrylate (PMMA), cycloolefin copolymer (COC), cycloolefin polymer (Cyclo-olefin polymer, COP), or a combination thereof.
- the functional material 102 is, for example, but is not limited to one or a combination of a metal material, a carbon material coated with a metal material on its surface, and a fiber material coated with a metal material on its surface.
- the metal material is, for example, but is not limited to copper, aluminum, or nickel.
- the flexible functional layer 10 is formed by mixing and compressing a flexible base material 101 and a functional material 102.
- the functional material 102 is, for example, but is not limited to one of the chopped fibers 103, the micro-nano particles 104, or a combination thereof.
- the functional material 102 can be uniformly distributed in the flexible composite film 1, so that the flexible composite film 1 has a heat dissipation and electromagnetic shielding function, and reduces each functional film layer. The number of laminations increases production yield.
- the texture of the flexible base material 101 is soft and the texture of the functional material 102 is hard, the overall texture of the flexible composite film 1 is stiff, so the flexible composite film 1 still has a high thickness even when the thickness is reduced.
- Strength and hardness thereby avoiding the problems of the flexible composite film 1 using a multilayer composite film and a support film to increase the overall strength and hardness of the flexible substrate, such as large thickness of the flexible substrate, low bonding yield, and increased material usage .
- the weight ratio of the flexible base material 101 to the functional material 102 is 1: 0.5 to 1: 500.
- the flexible functional layer 10 is formed by mixing and pressing the flexible base material 101 and the functional material 102, the flexible composite film is reduced compared with the structure using a multilayer film in the prior art.
- the overall thickness of 1 increases the flexibility of the flexible composite film 1.
- the material used for the flexible composite film 1 is correspondingly reduced, thereby saving materials and reducing production costs.
- the thickness of the flexible composite film 1 is approximately 55 ⁇ m to 300 ⁇ m, and the thickness of the flexible functional layer is approximately 50 ⁇ m to 300 ⁇ m.
- the flexible composite film 1 further includes a thermal barrier layer 20.
- the thermal barrier layer 20 is disposed on the flexible functional layer 10. It can be understood that the thermal barrier layer 20 has a two-way thermal insulation function. Specifically, the thermal barrier layer 20 may be formed on the flexible functional layer 10 by a coating method or an attaching method.
- a hollow void structure 201 is provided inside the thermal barrier layer 20 to effectively block external heat sources, thereby enhancing the uniform heat dissipation function of the entire flexible functional layer 10.
- the periphery of the flexible functional layer 10 is divided into a region A1 having an external heat source and a region A2 having no external heat source.
- the area A1 of the external heat source refers to an area provided with heating elements such as an IC chip (Integrated Circuit) and a Central Processing Unit (CPU).
- the thermal barrier layer 20 is preferably disposed in the area A1 having an external heat source around the flexible functional layer 10, Therefore, the heat emitted by the heating element cannot be directed to the display structure, thereby avoiding the problem that the heat emitted by the heating element is excessively concentrated and directed to the display structure, which causes the temperature of the display structure to rise sharply.
- the area A2 around the flexible functional layer 10 without an external heat source is not provided with the thermal barrier layer 20, so that the heat emitted by the heating element can be conducted through the flexible composite film 1 without the thermal barrier layer 20. Therefore, the thermal barrier layer 20 of the present application not only It can effectively block the external heat source and realize the directional heat dissipation function of the flexible composite film 1.
- the surface area of the flexible functional layer 10 is larger than the surface area of the thermal barrier layer 20.
- the thermal barrier layer 20 has a thin film structure. In this embodiment, in order to reduce the overall thickness of the flexible composite film 1, the thickness of the thermal barrier layer 20 is approximately 5 ⁇ m to 100 ⁇ m.
- the thermal barrier layer 20 includes an oxide of a metal such as mullite, aluminum, yttrium, zirconium, or a combination thereof. In other embodiments, the thermal barrier layer 20 may further include a silicate aerogel or a silica aerogel.
- the structure of the flexible composite film 1a is similar to the structure of the flexible composite film 1 in the first embodiment. Therefore, each component size, component name, component composition, and component position relationship included in the flexible composite film 1a Please refer to the above-mentioned flexible composite film 1 and the like, which will not be repeated here.
- the flexible functional layer 10 a includes a flexible substrate 11 and a functional material layer 12. The flexible functional layer 10 a is formed by laminating the flexible substrate 11 and the functional material layer 12.
- the flexible substrate 11 is a plastic substrate.
- the flexible substrate 11 is made of a transparent material.
- the above-mentioned flexible base material 101 is suitable for a transparent material, and is not repeated here.
- the thickness of the flexible substrate 11 is 50 ⁇ m to 300 ⁇ m, and the thickness of the functional material layer 12 is 5 ⁇ m to 100 ⁇ m.
- the thickness of the flexible substrate 11 accounts for 10% to 70% of the thickness of the flexible composite film 1.
- the thermal barrier layer 20 is disposed on a side of the flexible functional layer 10 facing away from the flexible substrate 11, and is disposed in an area A1 having an external heat source around the flexible functional layer 10.
- the functional material layer 12a has a sheet shape.
- the functional material layer 12 a and the flexible substrate 11 are stacked, that is, the functional material layer 12 a covers the flexible substrate 11.
- the functional material layer 12b has a mesh shape.
- the functional material layer 12c is unidirectional fibrous, that is, two adjacent functional material layers 12c are parallel. It can be understood that in order to ensure that the flexible composite film 1a has high hardness and strength and good bending performance, the fiber diameter of the functional material layers 12b and 12c is about 5 ⁇ m to 100 ⁇ m.
- FIG. 7 it is a flowchart of a method for preparing a flexible composite film according to an embodiment of the present invention.
- the method for preparing the flexible composite film 1 includes the following steps:
- the flexible functional layer includes a flexible base material and a functional material with a function of heat conduction, heat dissipation, and electromagnetic shielding.
- the flexible base material and the functional material with the functions of heat conduction, heat dissipation and electromagnetic shielding are mixed and pressed.
- Functional materials include one of chopped fibers, micro-nano particles, or a combination thereof.
- the flexible substrate and the functional material layer are laminated to obtain a flexible functional layer.
- the functional material layer is in the form of a sheet, a grid, or a unidirectional fiber.
- forming the thermal barrier layer on the flexible functional layer specifically includes:
- the glue solution is coated on the flexible functional layer to form a thermal barrier layer on the flexible functional layer.
- the glue solution may be pre-coated on the substrate to obtain a thermal barrier layer film, and then the thermal barrier layer film is attached to the flexible functional layer.
- a vacuum device is used to set the inside of the thermal barrier layer into a hollow void structure to effectively block external heat sources, thereby enhancing the uniform heat dissipation function of the entire flexible functional layer .
- FIG. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.
- the display device 100 includes the above-mentioned flexible composite film 1 and a display structure 2.
- the flexible composite film 1 and the display structure 2 are stacked, and the display structure 2 is formed above the flexible composite film 1.
- the display device 100 further includes a casing 3, and the flexible functional layers 10, 10a are overlapped on the casing 3 to further increase the heat dissipation area.
- the display device 100 further includes a heat generating element 4.
- the heating element 4 is disposed in the area A1 having a heat source in the flexible functional layer 10, 10a, that is, the heat blocking layer 20 is disposed between the heating element 4 and the flexible functional layers 10, 10a, so as to prevent the heat emitted by the heating element 4 from directly leading to the display structure 2, thereby avoiding that the temperature of the display structure 2 at the heating element 4 is too high, which affects the display effect and the service life.
- the display device 100 is, for example, a flexible touch screen or a flexible display device.
- Flexible display devices are, for example, but not limited to Liquid Crystal Display (LCD) panels, Quantum Dot Light Emitting Diodes (QLED) panels, E-paper display (EPD), and touch panels ), Flexible solar cell (Page View, PV) panels, radio frequency tags (Radio Frequency Identification, RFID) and other products or components with display functions.
- LCD Liquid Crystal Display
- QLED Quantum Dot Light Emitting Diodes
- EPD E-paper display
- touch panels Flexible solar cell (Page View, PV) panels
- radio frequency tags Radio Frequency Identification, RFID
- the flexible composite film provided by the present invention, a preparation method and a display device thereof, are integrated with a base material and a functional material having heat conduction, heat dissipation, and electromagnetic shielding functions, so as to obtain a thin and flexible material having heat conduction, heat dissipation, and electromagnetic shielding functions.
- a functional layer, and the preparation process is simple and the bonding yield is improved.
- a thermal barrier layer is prepared on the flexible functional layer, so as to prevent external heat sources from being conducted to the display structure.
- the combination of the flexible substrate material and the functional material enables the display device to have higher hardness and strength, thereby improving the user experience.
Abstract
A flexible composite film (1) and a preparation method therefor, and a display apparatus. The flexible composite film (1) comprises a flexible functional layer (10) and a thermal barrier layer (20) formed on the flexible functional layer (10), wherein the flexible functional layer (10) includes a flexible base material (101), and a functional material (102) having the functions of heat conduction, heat dissipation and electromagnetic shielding. By means of integrating the base material (101) and the functional material (102) having the functions of heat conduction, heat dissipation and electromagnetic shielding, a thinned flexible functional layer (10) having the functions of heat conduction, heat dissipation and electromagnetic shielding is prepared, and the preparation process is simple.
Description
本发明涉及显示技术领域，尤其涉及一种柔性复合膜及其制备方法和显示装置。The invention relates to the field of display technology, in particular to a flexible composite film, a preparation method thereof and a display device.
随着显示技术的发展，消费者对于显示装置的显示方式、显示效果等需求越来越多样化、个性化。现有的柔性显示装置，通常在柔性基材的一侧面设置支撑膜以及具有散热、电磁屏蔽等功能的复合膜。然而，复合膜的多个叠层以及支撑膜需要依次贴合，不仅制备工艺复杂，且不易减薄柔性显示装置。With the development of display technology, consumers' demands for display modes and display effects of display devices are becoming more diverse and personalized. In existing flexible display devices, a support film and a composite film having functions such as heat dissipation and electromagnetic shielding are usually provided on one side of a flexible substrate. However, multiple laminations of the composite film and the supporting film need to be laminated in sequence, which is not only complicated in the manufacturing process, but also it is not easy to thin the flexible display device.
发明内容Summary of the invention
鉴于现有技术中存在的上述问题，本发明提供一种制备工艺简单且薄型化的柔性复合膜及其制备方法。In view of the above problems in the prior art, the present invention provides a flexible composite film with a simple preparation process and a thin thickness, and a preparation method thereof.
另外，本发明还提供一种应用所述柔性复合膜的显示装置。In addition, the present invention also provides a display device using the flexible composite film.
为了实现上述目的，本发明实施方式提供如下技术方案：In order to achieve the foregoing objective, the embodiments of the present invention provide the following technical solutions:
第一方面，本发明提供一种柔性复合膜，包括柔性功能层，所述柔性功能层包含柔性基材材料和具有导热、散热和电磁屏蔽功能的功能材料。According to a first aspect, the present invention provides a flexible composite film including a flexible functional layer, the flexible functional layer including a flexible base material and a functional material having functions of heat conduction, heat dissipation, and electromagnetic shielding.
第二方面，本发明还提供了一种柔性复合膜的制备方法，包括如下步骤：将柔性基材材料、具有导热、散热和电磁屏蔽功能的功能材料进行混合并压合，以制备柔性功能层。In a second aspect, the present invention also provides a method for preparing a flexible composite film, including the following steps: mixing and pressing a flexible substrate material and a functional material with heat conduction, heat dissipation, and electromagnetic shielding functions to prepare a flexible functional layer .
第三方面，本发明还提供了另一种柔性复合膜的制备方法，包括如下步骤：In a third aspect, the present invention also provides another method for preparing a flexible composite film, including the following steps:
提供柔性基材；Provide flexible substrates;
制备功能材料层，所述功能材料层包含导热、散热和电磁屏蔽功能的功能材料；Preparing a functional material layer, the functional material layer including functional materials with thermal conduction, heat dissipation, and electromagnetic shielding functions;
将所述柔性基材和所述功能材料层进行压合，以制得所述柔性功能层。The flexible substrate and the functional material layer are laminated to obtain the flexible functional layer.
第四方面，本发明还提供了一种显示装置，包括上述柔性复合膜和显示结构，所述柔性复合膜和所述显示结构层叠设置。According to a fourth aspect, the present invention further provides a display device including the above-mentioned flexible composite film and a display structure, wherein the flexible composite film and the display structure are stacked.
本发明提供的柔性复合膜及其制备方法和显示装置，通过集成基材材料和具有导热、散热及电磁屏蔽功能的功能材料，以制得薄型化的且具有导热、散热、电磁屏蔽功能的柔性功能层，且制备工艺简单。The flexible composite film provided by the present invention, a preparation method and a display device thereof, are integrated with a base material and a functional material having heat conduction, heat dissipation, and electromagnetic shielding functions, so as to obtain a thin and flexible material having heat conduction, heat dissipation, and electromagnetic shielding functions. A functional layer and a simple preparation process.
为了更清楚地说明本发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地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，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。In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.
图1是本发明第一实施例提供的柔性复合膜的结构示意图。FIG. 1 is a schematic structural diagram of a flexible composite film provided by a first embodiment of the present invention.
图2是图1中的柔性复合膜的柔性功能膜的结构示意图。FIG. 2 is a schematic structural diagram of a flexible functional film of the flexible composite film in FIG. 1.
图3是本发明第二实施例提供的柔性复合膜的结构示意图。FIG. 3 is a schematic structural diagram of a flexible composite film provided by a second embodiment of the present invention.
图4是图3中的柔性复合膜的柔性功能膜的第一实施方式的结构示意图。4 is a schematic structural diagram of a first embodiment of a flexible functional film of the flexible composite film in FIG. 3.
图5是图3中的柔性复合膜的柔性功能膜的第二实施方式的结构示意图。FIG. 5 is a schematic structural diagram of a second embodiment of the flexible functional film of the flexible composite film in FIG. 3.
图6是图3中的柔性复合膜的柔性功能膜的第三实施方式的结构示意图。FIG. 6 is a schematic structural diagram of a third embodiment of the flexible functional film of the flexible composite film in FIG. 3.
图7是图1中的柔性复合膜的制备方法的流程图。FIG. 7 is a flowchart of a method for manufacturing the flexible composite film in FIG. 1.
图8是本发明实施例提供的显示装置的结构示意图。FIG. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
可以理解，这里所用的术语仅是为了描述特定实施例，并非要限制本发明。在这里使用时，除非上下文另有明确表述，否则单数形式“一”和“该”也旨在包 括复数形式。进一步地，当在本说明书中使用时，术语“包括”和/或“包含”表明所述特征、整体、步骤、元件和/或组件的存在，但不排除一个或多个其他特征、整体、步骤、元件、组件和/或其组合的存在或增加。说明书后续描述为实施本发明的较佳实施方式，然所述描述乃以说明本发明的一般原则为目的，并非用以限定本发明的范围。本发明的保护范围当视所附权利要求所界定者为准。It is understood that the terminology used herein is only for describing specific embodiments and is not intended to limit the present invention. As used herein, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, when used in this specification, the terms "including" and / or "comprising" indicate the presence of stated features, integers, steps, elements and / or components, but do not exclude one or more other features, integers, The presence or addition of steps, elements, components, and / or combinations thereof. The subsequent description of the specification is a preferred embodiment for implementing the present invention, but the description is for the purpose of illustrating the general principles of the present invention, and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the scope defined by the appended claims.
请参阅图1及图2，为本发明第一实施例提供的一种柔性复合膜。柔性复合膜1包括柔性功能层10。柔性功能层10包含柔性基材材料101和具有导热、散热和电磁屏蔽功能的功能材料102。Please refer to FIG. 1 and FIG. 2, which is a flexible composite film provided by the first embodiment of the present invention. The flexible composite film 1 includes a flexible functional layer 10. The flexible functional layer 10 includes a flexible substrate material 101 and a functional material 102 having functions of heat conduction, heat dissipation, and electromagnetic shielding.
在本实施例中，柔性功能层10为单层结构。柔性基材材料101例如是，但不局限于聚对苯二甲酸乙二醇酯(PET)、聚酰亚胺(Polyimide，PI)、聚碳酸酯(polycarbonate，PC)、无色透明聚酰亚胺(Colorless Polyimide，CPI)、聚对苯二甲酸乙二醇酯(polyethylene terephthalate，PET)、聚酰胺(polyamide，PA)、聚苯醚砜(polyethersulfone，PES)、聚萘二甲酸乙二醇酯(polyethylene naphthalate，PEN)、聚甲基丙烯酸甲酯(polymethylmethacrylate，PMMA)、环烯烃共聚物(cycloolefin copolymer，COC)、环烯烃聚合物(Cyclo-olefin polymer，COP)中的一种或其组合。功能材料102例如是，但不局限于金属材料、表面镀有金属材料的碳材料、表面镀有金属材料的纤维材料中的一种或它们之间的组合。金属材料例如是，但不局限于铜、铝或镍。In this embodiment, the flexible functional layer 10 has a single-layer structure. The flexible base material 101 is, for example, but not limited to, polyethylene terephthalate (PET), polyimide (PI), polycarbonate (PC), and colorless transparent polyimide. Amine (Colorless Polyimide (CPI), polyethylene terephthalate (PET), polyamide (PA), polyphenylene sulfone (PES), polyethylene naphthalate (polyethylene naphthalate (PEN)), polymethylmethacrylate (PMMA), cycloolefin copolymer (COC), cycloolefin polymer (Cyclo-olefin polymer, COP), or a combination thereof. The functional material 102 is, for example, but is not limited to one or a combination of a metal material, a carbon material coated with a metal material on its surface, and a fiber material coated with a metal material on its surface. The metal material is, for example, but is not limited to copper, aluminum, or nickel.
如图1和图2所示，在本实施例中，柔性功能层10是由柔性基材材料101和功能材料102混合后压合而成。功能材料102例如是，但不局限于短切纤维103、微纳米颗粒104中的一种或它们之间的组合。本发明实施例通过将柔性基材材料101与功能材料102混合，因此功能材料102能够均匀分布在柔性复合膜1中，从而使得柔性复合膜1具有散热和电磁屏蔽功能，并且减少各个功能膜层的贴合次数而增加生产良率。此外，由于柔性基材材料101的质地较软，而功能材料102的质地较硬，因此柔性复合膜1的整体质地较硬挺，因此柔性 复合膜1在厚度减薄的情况下，仍具有较高强度及硬度，从而避免柔性复合膜1采用多层复合膜与支撑膜贴合来提高整体的强度及硬度而造成的柔性基板厚度较大、贴合良率低、以及增加材料的使用量等问题。As shown in FIG. 1 and FIG. 2, in this embodiment, the flexible functional layer 10 is formed by mixing and compressing a flexible base material 101 and a functional material 102. The functional material 102 is, for example, but is not limited to one of the chopped fibers 103, the micro-nano particles 104, or a combination thereof. In the embodiment of the present invention, by mixing the flexible base material 101 and the functional material 102, the functional material 102 can be uniformly distributed in the flexible composite film 1, so that the flexible composite film 1 has a heat dissipation and electromagnetic shielding function, and reduces each functional film layer. The number of laminations increases production yield. In addition, since the texture of the flexible base material 101 is soft and the texture of the functional material 102 is hard, the overall texture of the flexible composite film 1 is stiff, so the flexible composite film 1 still has a high thickness even when the thickness is reduced. Strength and hardness, thereby avoiding the problems of the flexible composite film 1 using a multilayer composite film and a support film to increase the overall strength and hardness of the flexible substrate, such as large thickness of the flexible substrate, low bonding yield, and increased material usage .
可选的，为了确保柔性复合膜1具有较高的硬度和强度且具有较好的弯曲性能，柔性基材材料101与功能材料102的重量比为1:0.5～1:500。Optionally, in order to ensure that the flexible composite film 1 has high hardness and strength and good bending performance, the weight ratio of the flexible base material 101 to the functional material 102 is 1: 0.5 to 1: 500.
可以理解的，由于柔性功能层10是由柔性基材材料101和功能材料102混合后压合而成，相比于现有技术中的采用多层膜材层叠的结构，减小了柔性复合膜1的整体厚度，进而提高柔性复合膜1的柔性。此外，柔性复合膜1使用的材料也相应减少，从而可节约材料，进而降低生产成本。在本实施例中，柔性复合膜1的厚度大致为55μm～300μm，柔性功能层的厚度大致为50μm～300μm。It can be understood that, since the flexible functional layer 10 is formed by mixing and pressing the flexible base material 101 and the functional material 102, the flexible composite film is reduced compared with the structure using a multilayer film in the prior art. The overall thickness of 1 increases the flexibility of the flexible composite film 1. In addition, the material used for the flexible composite film 1 is correspondingly reduced, thereby saving materials and reducing production costs. In this embodiment, the thickness of the flexible composite film 1 is approximately 55 μm to 300 μm, and the thickness of the flexible functional layer is approximately 50 μm to 300 μm.
进一步的，在本实施例中，柔性复合膜1还包括热阻隔层20。热阻隔层20设置在柔性功能层10上。可以理解的，热阻隔层20具有双向隔热功能。具体的，热阻隔层20可以采用涂覆方式或贴附方式形成在柔性功能层10上。可选的，热阻隔层20的内部设置中空的空隙结构201，以有效阻隔外界的热源，从而增强整个柔性功能层10的均匀散热功能。Further, in this embodiment, the flexible composite film 1 further includes a thermal barrier layer 20. The thermal barrier layer 20 is disposed on the flexible functional layer 10. It can be understood that the thermal barrier layer 20 has a two-way thermal insulation function. Specifically, the thermal barrier layer 20 may be formed on the flexible functional layer 10 by a coating method or an attaching method. Optionally, a hollow void structure 201 is provided inside the thermal barrier layer 20 to effectively block external heat sources, thereby enhancing the uniform heat dissipation function of the entire flexible functional layer 10.
柔性功能层10的周围划分为具有外部热源的区域A1和无外部热源的区域A2。外部热源的区域A1是指设有IC芯片(Integrated Circuit，集成电路)、中央处理器(Central Processing Unit，CPU)等发热元件的区域。可选的，由于显示结构在靠近发热元件(例如IC芯片)的区域温度较高而影响显示结构的使用寿命，因此热阻隔层20优选设置在柔性功能层10的周围具有外部热源的区域A1，从而发热元件散发的热量不能直接导向显示结构，进而避免发热元件散发的热量过度集中地导向显示结构而造成显示结构的温度急剧升高的问题。柔性功能层10的周围无外部热源的区域A2没有设置热阻隔层20，从而发热元件散发的热量能够通过未设置热阻隔层20的柔性复合膜1导出，因此，本申请的热阻隔层20不仅能够有效阻隔外界的热源，且实现柔性复合膜 1的定向散热功能。The periphery of the flexible functional layer 10 is divided into a region A1 having an external heat source and a region A2 having no external heat source. The area A1 of the external heat source refers to an area provided with heating elements such as an IC chip (Integrated Circuit) and a Central Processing Unit (CPU). Optionally, since the temperature of the display structure is higher in a region near the heating element (such as an IC chip), which affects the service life of the display structure, the thermal barrier layer 20 is preferably disposed in the area A1 having an external heat source around the flexible functional layer 10, Therefore, the heat emitted by the heating element cannot be directed to the display structure, thereby avoiding the problem that the heat emitted by the heating element is excessively concentrated and directed to the display structure, which causes the temperature of the display structure to rise sharply. The area A2 around the flexible functional layer 10 without an external heat source is not provided with the thermal barrier layer 20, so that the heat emitted by the heating element can be conducted through the flexible composite film 1 without the thermal barrier layer 20. Therefore, the thermal barrier layer 20 of the present application not only It can effectively block the external heat source and realize the directional heat dissipation function of the flexible composite film 1.
可选的，为了避免热量在柔性功能层10上聚集，柔性功能层10的表面积大于热阻隔层20的表面积。热阻隔层20为薄膜结构。在本实施例中，为了减薄柔性复合膜1的整体厚度，热阻隔层20的厚度大致为5μm～100μm。可选的，热阻隔层20中包含有莫来石、铝、钇、锆等金属的氧化物或它们之间的组合。在其他实施例中，热阻隔层20中还可包含有硅酸盐气凝胶或二氧化硅气凝胶。Optionally, in order to avoid heat accumulation on the flexible functional layer 10, the surface area of the flexible functional layer 10 is larger than the surface area of the thermal barrier layer 20. The thermal barrier layer 20 has a thin film structure. In this embodiment, in order to reduce the overall thickness of the flexible composite film 1, the thickness of the thermal barrier layer 20 is approximately 5 μm to 100 μm. Optionally, the thermal barrier layer 20 includes an oxide of a metal such as mullite, aluminum, yttrium, zirconium, or a combination thereof. In other embodiments, the thermal barrier layer 20 may further include a silicate aerogel or a silica aerogel.
如图3至图6所示，为本发明第二实施例提供的一种柔性复合膜1a。在第二实施例中，柔性复合膜1a的结构与第一实施例中的柔性复合膜1的结构相似，因此柔性复合膜1a包含的各元件尺寸、元件名称、元件组分及个元件位置关系等均可参看上述柔性复合膜1，在此不再赘述。不同的是，柔性功能层10a包括柔性基材11和功能材料层12，柔性功能层10a是由柔性基材11和功能材料层12压合而成。As shown in FIG. 3 to FIG. 6, it is a flexible composite film 1 a provided by the second embodiment of the present invention. In the second embodiment, the structure of the flexible composite film 1a is similar to the structure of the flexible composite film 1 in the first embodiment. Therefore, each component size, component name, component composition, and component position relationship included in the flexible composite film 1a Please refer to the above-mentioned flexible composite film 1 and the like, which will not be repeated here. The difference is that the flexible functional layer 10 a includes a flexible substrate 11 and a functional material layer 12. The flexible functional layer 10 a is formed by laminating the flexible substrate 11 and the functional material layer 12.
在本实施例中，柔性基材11为塑料基材。柔性基材11由透明材料制成。上述柔性基材材料101适用于透明材料，在此不再赘述。为了确保柔性复合膜1的硬挺度和弯折性能，柔性基材11的厚度为50μm～300μm，功能材料层12的厚度为5μm～100um。在本实施例中，柔性基材11的厚度占柔性复合膜1的厚度的10％-70％。热阻隔层20设置在柔性功能层10背离柔性基材11的一侧，且设置在柔性功能层10的周围具有外部热源的区域A1。In this embodiment, the flexible substrate 11 is a plastic substrate. The flexible substrate 11 is made of a transparent material. The above-mentioned flexible base material 101 is suitable for a transparent material, and is not repeated here. In order to ensure the stiffness and bending performance of the flexible composite film 1, the thickness of the flexible substrate 11 is 50 μm to 300 μm, and the thickness of the functional material layer 12 is 5 μm to 100 μm. In this embodiment, the thickness of the flexible substrate 11 accounts for 10% to 70% of the thickness of the flexible composite film 1. The thermal barrier layer 20 is disposed on a side of the flexible functional layer 10 facing away from the flexible substrate 11, and is disposed in an area A1 having an external heat source around the flexible functional layer 10.
在第一实施方式中，功能材料层12a呈片状。功能材料层12a与柔性基材11层叠设置，也即功能材料层12a覆盖柔性基材11。在第二实施方式中，功能材料层12b呈网格状。在第三实施方式中，功能材料层12c呈单向纤维状，也即相邻的两功能材料层12c平行。可以理解的，为了确保柔性复合膜1a具有较高的硬度和强度且具有较好的弯曲性能，功能材料层12b，12c的纤维直径大约为5μm～100μm。In the first embodiment, the functional material layer 12a has a sheet shape. The functional material layer 12 a and the flexible substrate 11 are stacked, that is, the functional material layer 12 a covers the flexible substrate 11. In the second embodiment, the functional material layer 12b has a mesh shape. In the third embodiment, the functional material layer 12c is unidirectional fibrous, that is, two adjacent functional material layers 12c are parallel. It can be understood that in order to ensure that the flexible composite film 1a has high hardness and strength and good bending performance, the fiber diameter of the functional material layers 12b and 12c is about 5 μm to 100 μm.
如图7所示，为本发明实施例提供的柔性复合膜的制备方法的流程图。柔性复合膜1的制备方法，包括如下步骤：As shown in FIG. 7, it is a flowchart of a method for preparing a flexible composite film according to an embodiment of the present invention. The method for preparing the flexible composite film 1 includes the following steps:
S701、制备柔性功能层，柔性功能层包含柔性基材材料和具有导热、散热和电磁屏蔽功能的功能材料；S701. Prepare a flexible functional layer. The flexible functional layer includes a flexible base material and a functional material with a function of heat conduction, heat dissipation, and electromagnetic shielding.
S703、在柔性功能层上形成热阻隔层。S703. Form a thermal barrier layer on the flexible functional layer.
制备柔性功能层，具体包括：Preparation of flexible functional layers, including:
将柔性基材材料、具有导热、散热和电磁屏蔽功能的功能材料进行混合并压合。The flexible base material and the functional material with the functions of heat conduction, heat dissipation and electromagnetic shielding are mixed and pressed.
功能材料包括短切纤维、微纳米颗粒中的一种或它们之间的组合。Functional materials include one of chopped fibers, micro-nano particles, or a combination thereof.
制备柔性功能层，具体包括：Preparation of flexible functional layers, including:
提供柔性基材；Provide flexible substrates;
制备功能材料层；Preparing a functional material layer;
将柔性基材和功能材料层进行压合，以制得柔性功能层。The flexible substrate and the functional material layer are laminated to obtain a flexible functional layer.
功能材料层呈片状、网格状或单向纤维状。The functional material layer is in the form of a sheet, a grid, or a unidirectional fiber.
在本实施例中，在柔性功能层上形成热阻隔层具体包括：In this embodiment, forming the thermal barrier layer on the flexible functional layer specifically includes:
制备包含热阻隔层材料的胶液；Preparing a glue solution containing a thermal barrier layer material;
将胶液涂覆于柔性功能层上，以在柔性功能层上形成热阻隔层。The glue solution is coated on the flexible functional layer to form a thermal barrier layer on the flexible functional layer.
可选的，在其它实施例中，胶液可预先涂覆于基板上，以制得热阻隔层薄膜，再将热阻隔层薄膜贴附于柔性功能层上。进一步的，在本实施例中，在制备热阻隔层的过程中采用真空设备将热阻隔层的内部设置成中空的空隙结构，以有效阻隔外界的热源，从而增强整个柔性功能层的均匀散热功能。Optionally, in other embodiments, the glue solution may be pre-coated on the substrate to obtain a thermal barrier layer film, and then the thermal barrier layer film is attached to the flexible functional layer. Further, in this embodiment, in the process of preparing the thermal barrier layer, a vacuum device is used to set the inside of the thermal barrier layer into a hollow void structure to effectively block external heat sources, thereby enhancing the uniform heat dissipation function of the entire flexible functional layer .
请参看图8，为本发明实施例提供的显示装置的结构示意图。显示装置100包括上述柔性复合膜1和显示结构2。柔性复合膜1和显示结构2层叠设置，且显示结构2形成在柔性复合膜1的上方。显示装置100还包括机壳3，柔性功能层10，10a搭接在机壳3上，以进一步增加散热面积。Please refer to FIG. 8, which is a schematic structural diagram of a display device according to an embodiment of the present invention. The display device 100 includes the above-mentioned flexible composite film 1 and a display structure 2. The flexible composite film 1 and the display structure 2 are stacked, and the display structure 2 is formed above the flexible composite film 1. The display device 100 further includes a casing 3, and the flexible functional layers 10, 10a are overlapped on the casing 3 to further increase the heat dissipation area.
显示装置100还包括发热元件4。发热元件4设置在柔性功能层10，10a具有热源的区域A1，也即热阻隔层20设置在发热元件4和柔性功能层10，10a之间，从而避免发热元件4散发的热量直接导向显示结构2，进而避免显 示结构2在发热元件4处的温度过高而影响显示效果及使用寿命。The display device 100 further includes a heat generating element 4. The heating element 4 is disposed in the area A1 having a heat source in the flexible functional layer 10, 10a, that is, the heat blocking layer 20 is disposed between the heating element 4 and the flexible functional layers 10, 10a, so as to prevent the heat emitted by the heating element 4 from directly leading to the display structure 2, thereby avoiding that the temperature of the display structure 2 at the heating element 4 is too high, which affects the display effect and the service life.
在本实施例中，显示装置100例如是柔性触摸屏或柔性显示装置。柔性显示装置例如是，但不局限于液晶显示(Liquid Crystal Display,LCD)面板、量子点显示(Quantum Dot Light Emitting Diodes,QLED)面板、电子纸(E-paper Display,EPD)、触摸屏(Touch panel)、柔性太阳能电池(Page View,PV)板、射频标签(Radio Frequency Identification,RFID)等具有显示功能的产品或部件。In this embodiment, the display device 100 is, for example, a flexible touch screen or a flexible display device. Flexible display devices are, for example, but not limited to Liquid Crystal Display (LCD) panels, Quantum Dot Light Emitting Diodes (QLED) panels, E-paper display (EPD), and touch panels ), Flexible solar cell (Page View, PV) panels, radio frequency tags (Radio Frequency Identification, RFID) and other products or components with display functions.
本发明提供的柔性复合膜及其制备方法和显示装置，通过集成基材材料和具有导热、散热及电磁屏蔽功能的功能材料，以制得薄型化的且具有导热、散热、电磁屏蔽功能的柔性功能层，且制备工艺简单及提高贴合良率。进一步的，在柔性功能层上制备热阻隔层，从而能够避免外界热源向显示结构传导。此外，柔性基材材料与功能材料组合，以使显示装置较高的硬度和强度，进而提高了用户的体验。The flexible composite film provided by the present invention, a preparation method and a display device thereof, are integrated with a base material and a functional material having heat conduction, heat dissipation, and electromagnetic shielding functions, so as to obtain a thin and flexible material having heat conduction, heat dissipation, and electromagnetic shielding functions. A functional layer, and the preparation process is simple and the bonding yield is improved. Further, a thermal barrier layer is prepared on the flexible functional layer, so as to prevent external heat sources from being conducted to the display structure. In addition, the combination of the flexible substrate material and the functional material enables the display device to have higher hardness and strength, thereby improving the user experience.
以上所述的实施方式，并不构成对该技术方案保护范围的限定。任何在上述实施方式的原则之内所作的修改、等同替换和改进等，均应包含在该技术方案的保护范围之内。The embodiments described above do not constitute a limitation on the protection scope of the technical solution. Any modification, equivalent replacement, and improvement made within the principles of the above-mentioned embodiment shall be included in the protection scope of this technical solution.
Claims (20)
- 一种柔性复合膜，其特征在于，包括柔性功能层，所述柔性功能层包含柔性基材材料和具有导热和电磁屏蔽功能的功能材料。A flexible composite film is characterized by comprising a flexible functional layer, the flexible functional layer comprising a flexible substrate material and a functional material having a function of heat conduction and electromagnetic shielding.
- 如权利要求1所述的柔性复合膜，其特征在于，所述功能材料包括金属材料、表面镀有所述金属材料的碳材料、表面镀有所述金属材料的纤维材料中的一种或它们之间的组合。The flexible composite film according to claim 1, wherein the functional material comprises one of a metal material, a carbon material plated with the metal material on the surface, and a fiber material plated with the metal material on the surface, or they Combination.
- 如权利要求1所述的柔性复合膜，其特征在于，所述柔性基材材料包括聚对苯二甲酸乙二醇酯、聚酰亚胺、无色透明聚酰亚胺、聚碳酸酯、聚对苯二甲酸乙二醇酯、聚酰胺、聚苯醚砜、聚萘二甲酸乙二醇酯、聚甲基丙烯酸甲酯、环烯烃共聚物、环烯烃聚合物中的一种或其组合。The flexible composite film according to claim 1, wherein the flexible substrate material comprises polyethylene terephthalate, polyimide, colorless transparent polyimide, polycarbonate, polyimide One or a combination of polyethylene terephthalate, polyamide, poly (phenylene ether sulfone), polyethylene naphthalate, polymethyl methacrylate, cycloolefin copolymer, cycloolefin polymer.
- 如权利要求1所述的柔性复合膜，其特征在于，所述柔性复合膜还包括热阻隔层，所述热阻隔层设置在所述柔性功能层上。The flexible composite film according to claim 1, wherein the flexible composite film further comprises a thermal barrier layer, and the thermal barrier layer is disposed on the flexible functional layer.
- 如权利要求4所述的柔性复合膜，其特征在于，所述热阻隔层设置在所述柔性功能层背离所述柔性基材的一侧，且所述热阻隔层设置在所述柔性功能层的周围具有外部热源的区域。The flexible composite film according to claim 4, wherein the thermal barrier layer is disposed on a side of the flexible functional layer facing away from the flexible substrate, and the thermal barrier layer is disposed on the flexible functional layer Areas with external heat sources.
- 如权利要求4所述的柔性复合膜，其特征在于，所述柔性功能层的表面积大于所述热阻隔层的表面积。The flexible composite film according to claim 4, wherein a surface area of the flexible functional layer is larger than a surface area of the thermal barrier layer.
- 如权利要求4所述的柔性复合膜，其特征在于，所述热阻隔层包含有金属的氧化物。The flexible composite film according to claim 4, wherein the thermal barrier layer comprises a metal oxide.
- 如权利要求4所述的柔性复合膜，其特征在于，所述热阻隔层的内部设有中空的空隙结构。The flexible composite film according to claim 4, wherein a hollow space structure is provided inside the thermal barrier layer.
- 如权利要求1所述的柔性复合膜，其特征在于，所述柔性功能层是由所述柔性基材材料和所述功能材料混合后压合而成。The flexible composite film according to claim 1, wherein the flexible functional layer is formed by mixing the flexible base material and the functional material and pressing them together.
- 如权利要求9所述的柔性复合膜，其特征在于，所述功能材料包括短切纤维、微纳米颗粒中的一种或它们之间的组合。The flexible composite film according to claim 9, wherein the functional material comprises one of chopped fibers, micro-nano particles, or a combination thereof.
- 如权利要求1所述的柔性复合膜，其特征在于，柔性基材材料及功能 材料分别为两层，所述柔性功能层是由所述柔性基材和所述功能材料层压合而成。The flexible composite film according to claim 1, wherein the flexible base material and the functional material are two layers, and the flexible functional layer is formed by laminating the flexible base material and the functional material.
- 如权利要求11所述的柔性复合膜，其特征在于，所述功能材料层呈片状、网格状或单向纤维状。The flexible composite film according to claim 11, wherein the functional material layer is in a sheet shape, a grid shape, or a unidirectional fiber shape.
- 一种柔性复合膜的制备方法，包括如下步骤：A method for preparing a flexible composite film includes the following steps:将柔性基材材料、具有导热、散热和电磁屏蔽功能的功能材料进行混合并压合，以制备柔性功能层。The flexible base material and the functional materials with the functions of heat conduction, heat dissipation and electromagnetic shielding are mixed and pressed to prepare a flexible functional layer.
- 如权利要求13所述的柔性复合膜的制备方法，其特征在于，所述功能材料包括短切纤维、微纳米颗粒中的一种或它们之间的组合。The method for preparing a flexible composite film according to claim 13, wherein the functional material comprises one of chopped fibers, micro-nano particles, or a combination thereof.
- 如权利要求13所述的柔性复合膜的制备方法，其特征在于，所述柔性复合膜的制备方法还包括：在所述柔性功能层上形成热阻隔层。The method for manufacturing a flexible composite film according to claim 13, further comprising: forming a thermal barrier layer on the flexible functional layer.
- 一种柔性复合膜的制备方法，其特征在于，包括如下步骤：A method for preparing a flexible composite film, comprising the following steps:提供柔性基材；Provide flexible substrates;制备功能材料层，所述功能材料层包含导热、散热和电磁屏蔽功能的功能材料；Preparing a functional material layer, the functional material layer including functional materials with thermal conduction, heat dissipation, and electromagnetic shielding functions;将所述柔性基材和所述功能材料层进行压合，以制得所述柔性功能层。The flexible substrate and the functional material layer are laminated to obtain the flexible functional layer.
- 如权利要求16所述的柔性复合膜的制备方法，其特征在于，所述功能材料层呈片状、网格状或单向纤维状。The method for preparing a flexible composite film according to claim 16, wherein the functional material layer is in a sheet shape, a grid shape, or a unidirectional fiber shape.
- 如权利要求16所述的柔性复合膜的制备方法，其特征在于，所述柔性复合膜的制备方法还包括：在所述柔性功能层上形成热阻隔层。The method for manufacturing a flexible composite film according to claim 16, further comprising: forming a thermal barrier layer on the flexible functional layer.
- 一种显示装置，包括如权利要求1至12任意一项所述的柔性复合膜和显示结构，所述柔性复合膜和所述显示结构层叠设置，所述柔性复合膜包括柔性功能层。A display device comprising the flexible composite film and the display structure according to any one of claims 1 to 12, wherein the flexible composite film and the display structure are stacked, and the flexible composite film includes a flexible functional layer.
- 如权利要求19所述的显示装置，其特征在于，所述显示装置还包括机壳，所述柔性功能层搭接在所述机壳上。The display device according to claim 19, wherein the display device further comprises a casing, and the flexible functional layer is overlapped on the casing.
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| PCT/CN2018/094324 WO2020006684A1 (en) | 2018-07-03 | 2018-07-03 | Flexible composite film and preparation method therefor, and display apparatus |
| CN201880093826.3A CN112469562A (en) | 2018-07-03 | 2018-07-03 | Flexible composite film, preparation method thereof and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040086717A1 (en) * | 2002-06-14 | 2004-05-06 | Avery Dennison Corporation | Transparent conductive film for flat panel displays |
| TW201303902A (en) * | 2011-07-08 | 2013-01-16 | Ind Tech Res Inst | Conductive film structure capable of resisting moisture and oxygen and electric apparatus using the same |
| CN107230519A (en) * | 2016-03-23 | 2017-10-03 | 张家港康得新光电材料有限公司 | Flexible conductive film and preparation method thereof |
| CN107230516A (en) * | 2016-03-23 | 2017-10-03 | 张家港康得新光电材料有限公司 | Flexible conductive film and the photoelectric device comprising it |
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| CN107554017A (en) * | 2017-08-28 | 2018-01-09 | 京东方科技集团股份有限公司 | Flexible compound film and preparation method thereof and display device |
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- 2018-07-03 WO PCT/CN2018/094324 patent/WO2020006684A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040086717A1 (en) * | 2002-06-14 | 2004-05-06 | Avery Dennison Corporation | Transparent conductive film for flat panel displays |
| TW201303902A (en) * | 2011-07-08 | 2013-01-16 | Ind Tech Res Inst | Conductive film structure capable of resisting moisture and oxygen and electric apparatus using the same |
| CN107230519A (en) * | 2016-03-23 | 2017-10-03 | 张家港康得新光电材料有限公司 | Flexible conductive film and preparation method thereof |
| CN107230516A (en) * | 2016-03-23 | 2017-10-03 | 张家港康得新光电材料有限公司 | Flexible conductive film and the photoelectric device comprising it |
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