WO2017004835A1 - 触控显示装置及触控显示装置的制备方法 - Google Patents

触控显示装置及触控显示装置的制备方法 Download PDF

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Publication number
WO2017004835A1
WO2017004835A1 PCT/CN2015/083690 CN2015083690W WO2017004835A1 WO 2017004835 A1 WO2017004835 A1 WO 2017004835A1 CN 2015083690 W CN2015083690 W CN 2015083690W WO 2017004835 A1 WO2017004835 A1 WO 2017004835A1
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WIPO (PCT)
Prior art keywords
layer
touch
polarizing
display device
film
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Ceased
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PCT/CN2015/083690
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English (en)
French (fr)
Inventor
张家奇
刘自鸿
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Shenzhen Royole Technologies Co Ltd
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Shenzhen Royole Technologies Co Ltd
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Priority to CN201580002979.9A priority Critical patent/CN106537299A/zh
Priority to PCT/CN2015/083690 priority patent/WO2017004835A1/zh
Publication of WO2017004835A1 publication Critical patent/WO2017004835A1/zh
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Definitions

  • the present invention relates to the field of touch control, and more particularly to a touch display device having a polarizing function and a method for preparing the touch display device.
  • the touch panel provides a new human-computer interaction interface, which is more direct and more user-friendly in use.
  • the touch screen and the flat display panel are integrated to form a touch display device, which can enable the flat display device to have a touch function, and can perform input through a finger, a stylus, etc., and the operation is more intuitive and simple.
  • the display device generally has a polarizer.
  • the polarizer comprises a multi-layer structure, for example, comprising a polarizing film, a plurality of film layers having support and protection functions on both sides of the polarizing film, such as a support film layer and a support outer side of the protective film respectively disposed on both sides of the polarizing film.
  • Protective film layer Such a polarizer has a complicated structure and high cost.
  • the touch display device is provided with a polarizer, the overall thickness of the touch display device is still not satisfactory, which is disadvantageous for preparing an ultra-thin display device.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention needs to provide a touch display device with a polarizing function and a method for preparing the touch display device.
  • a touch display device includes a polarizing layer, a touch layer and a display panel.
  • the polarizing layer includes a first protective film, a polarizing film and a second protective film, and the first protective film and the second protective film are respectively disposed on opposite surfaces of the polarizing film.
  • the touch layer is disposed on a surface of the second protective film facing away from the polarizing film.
  • the display panel is disposed on the touch layer, and the touch layer is located between the display panel and the polarizing layer.
  • the touch display device combines the polarizing function and the touch function. Since the touch layer is located between the polarizing layer and the display panel, the polarizing layer and the display panel can serve as a protective layer of the touch layer, and an additional touch layer is omitted.
  • the protective layer further facilitates the preparation of ultra-thin display devices and saves costs.
  • a method for preparing a touch display device includes the following steps:
  • the touch layer with the polarizing layer is disposed on the display panel, where the touch layer is located on the display panel and the bias layer Between the light layers.
  • the method for preparing the touch display device combines the polarizing function and the touch function. Since the touch layer is located between the polarizing layer and the display panel, the polarizing layer and the display panel can serve as a protective layer of the touch layer, omitting additional The protective layer of the touch layer further facilitates the preparation of an ultra-thin display device and saves cost.
  • FIG. 1 is a schematic structural view of a touch display device according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a touch display device connected to a flexible circuit board according to a preferred embodiment of the present invention
  • FIG. 3 is a schematic structural view of a conductive pattern layer of a touch display device according to a preferred embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a polarizing film according to a preferred embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of a method of fabricating a touch display device according to a preferred embodiment of the present invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include one or more of the described features either explicitly or implicitly.
  • the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; may be mechanically connected, or may be electrically connected or may communicate with each other; may be directly connected or indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • a touch display device 100 includes a polarizing layer 102 , a touch layer 104 , and a display panel 106 .
  • the polarizing layer 102 includes a first protective film 108, a polarizing film 110, and a second protective film 112.
  • the first protective film 108 and the second protective film 112 are respectively disposed on opposite surfaces of the polarizing film 110.
  • the first protective film 108 and the second protective film 112 may be a TAC (Triacetyl Cellulose) film, which has a supporting and protective effect on the polarizing film 110.
  • TAC Triacetyl Cellulose
  • the polarizing film 110 can be made of a polymer material.
  • the material of the polarizing film 110 is polyvinyl alcohol (PVA).
  • PVA polyvinyl alcohol
  • the polyvinyl alcohol has good alignment, high mechanical strength, easy extension, high transmittance, and low chargeability. And good dyeing and other advantages. It can be understood that in other embodiments, the material of the polarizing film 110 may adopt other polymer materials suitable as a polarizing material.
  • the touch layer 104 is disposed on a surface of the second protective film 112 facing away from the polarizing film 110.
  • the touch layer 104 is a single layer structure, and includes a first pattern layer 114 and a second pattern layer 116.
  • the first pattern layer 114 and the second pattern layer 116 are in the same layer, and the first pattern layer is The insulation between the 114 and the second pattern layer 116 is insulated.
  • the first pattern layer 114 includes a first electrode 118 and a first lead (not shown).
  • the first lead is connected to the first electrode 118 and is used to connect the external flexible circuit board 400.
  • the second pattern layer 116 includes a second electrode 120 and a second lead (not shown).
  • the second lead is connected to the second electrode 120 and is used for connecting an external flexible circuit board 400.
  • the external flexible circuit board 400 is connected to the touch layer 104. And the controller (control IC) of the touch layer (not shown).
  • the first electrode 118 and the second electrode 120 have a comb-like structure, and the first electrode 118 and the second electrode 120 are spaced apart to form a conductive pattern.
  • the first electrode 118 and the second electrode 120 can function as a touch electrode.
  • the material of the first electrode 118 and the material of the second electrode 120 may be made of a material such as graphene or a nano silver wire, and may be formed into a corresponding pattern on the conductive film by laser etching, for example, a laser may be emitted by a pulse method, and The strength of the laser is controlled to etch the conductive film.
  • the material of the first lead and the material of the second lead may be selected from materials such as conductive silver paste, and may be formed on the second protective film 112 by a printing process after the first electrode 118 and the second electrode 120 are formed and connected to each other. electrode.
  • the example is not limited to the implementation of the present invention. It can be understood that the touch pattern can be designed according to specific requirements.
  • the touch layer 104 can also be implemented by other common technical means in the art, such as Screen printing directly forms the desired touch pattern and leads.
  • the touch of the embodiment The layer 104 can reduce the number of layers, and the touch display device 100 can be made thinner and thinner, and is more suitable for a flexible display panel.
  • a polarizer that has been prepared may be used, generally including a release film of the outermost layer, and then the release film is peeled off, and then the touch layer 104 is directly formed on the outer surface of the second protective film 112. In this way, the process flow for preparing the touch display device 100 can be simplified.
  • the display panel 106 is disposed on the touch layer 104 , and the touch layer 104 is located between the display panel 106 and the polarizing layer 102 . Therefore, the display panel 106, the touch layer 104, and the polarizing layer 102 are sequentially arranged from the light emitting direction of the display panel 106. Therefore, the polarizing layer 102 and the display panel 106 can serve as a protective structure of the touch layer 104 to perform water and oxygen protection. It is not necessary to specifically increase the water blocking oxygen film layer. Therefore, the touch display device 100 of the present embodiment reduces the cost of the touch display device 100 and simplifies the process flow of the touch display device 100 while ensuring the water oxygen protection effect on the touch layer 104.
  • the display panel 106 can be a liquid crystal display (LCD) or a display panel such as an organic light emitting diode display panel (OLED panel).
  • a flexible circuit board 500 can be connected to the periphery of the display panel 106 for connecting the display panel 106 and the controller (control IC) of the display panel, as shown in FIG.
  • the polarizing film 110 is a circular polarizing film.
  • the polarizing film 110 includes a linear polarizing film 122 and an optical retardation film 124 on the linear polarizing film 122.
  • the retardation film 124 is disposed on the surface on the light incident side of the linear polarizing film 122.
  • the optical retardation film 124 includes a ⁇ /4 polarizing film to reduce external light interference and improve display contrast.
  • the touch layer 104 with the polarizing layer 102 can be bonded to the display panel 106 by an adhesive layer 126.
  • the adhesive layer 126 can be an adhesive or a coating.
  • the touch display device 100 includes a protective layer 128 disposed on the first protective film 108 facing away from the polarizing layer 102. On the surface. In this way, the polarizing layer 102 can be more fully protected, and the service life of the polarizing layer 102 is extended.
  • the protective layer 128 may be formed on the first protective film 108 by coating.
  • the touch display device 100 combines the polarizing function and the touch function. Since the touch layer 104 is located between the polarizing layer 102 and the display panel 106, the polarizing layer 102 and the display panel 106 can be used as the touch layer.
  • the protective layer of 104 omits the additional protective layer of the touch layer 104, which further facilitates the preparation of an ultra-thin display device and saves cost.
  • a preferred embodiment of the present invention provides a method for fabricating a touch display device.
  • the preparation method can be used to prepare the touch display device 100 of the above embodiment.
  • the method for preparing the touch display device includes the following steps:
  • the touch layer 104 with the polarizing layer 102 is disposed on the display panel 106.
  • the touch layer 104 is located between the display panel 106 and the polarizing layer 102.
  • the polarizing layer 102 can be obtained using the already prepared polarizer.
  • the method for preparing the touch display device may include the step S0: removing the release film of the polarizer to form the polarizing layer 102.
  • the polarizer includes a polarizing film 110 and a first protective film 108 and the second protective film 112 respectively disposed on opposite surfaces of the polarizing film 110, and the second protective film 112 is disposed away from the polarizing film. A release film on the surface of 110.
  • the polarizer that has been produced generally has a release film located at the outermost layer.
  • the release film is a removable film layer provided to protect the polarizer when the polarizer is completed.
  • the release film may be disposed on the polarizer by a bonding layer (adhesive layer) or vacuum adsorption.
  • the polarizing film 110 can be made of a polymer material.
  • the material of the polarizing film 110 is polyvinyl alcohol (PVA).
  • PVA polyvinyl alcohol
  • the polyvinyl alcohol has good alignment, high mechanical strength, easy extension, high transmittance, and low chargeability. And good dyeing and other advantages.
  • the means for removing the release film may be performed by tearing off the release film from the polarizing layer 102. Further, if the release film is disposed on the polarizing layer 102 through the bonding layer, it is peeled off. After the film is formed, this requires removal of the bonding layer from the polarizing layer 102.
  • the touch layer 104 has a single layer structure, and includes a first pattern layer 114 and a second pattern layer 116.
  • the first pattern layer 114 and the second pattern layer 116 are in the same layer.
  • the first pattern layer 114 and the second pattern layer 116 are insulated from each other.
  • a conductive film may be coated on the surface of the second protective film 112 facing away from the polarizing film 110, and then laser etched.
  • the first electrode 118 and the second electrode 120 are prepared from the conductive film.
  • the material of the conductive film may be selected from graphene or nano silver.
  • the example is not limited to the implementation of the present invention. It can be understood that the touch pattern can be designed according to specific requirements.
  • the touch layer 104 can also be implemented by other common technical means in the art, such as Screen printing directly forms the desired touch pattern and leads.
  • the first lead and the second lead are prepared by a printing process, the first lead is connected to the first electrode 118, and the second lead is connected to the second electrode 120.
  • the material of the lead can be selected from a conductive silver paste.
  • the touch layer 104 of the present embodiment can reduce the number of layers, and the touch display device 100 can be made thinner and thinner, and is more suitable for a flexible display panel.
  • the touch layer 104 can be bonded to the display panel 106 by the adhesive layer 126.
  • the adhesive layer 126 can be an adhesive or a coating.
  • the touch display device In addition, in order to protect the first protective film 108 from scratches, impacts, fingerprints, etc., the touch display device
  • the preparation method comprises the following steps:
  • the polarizer may further include another release film respectively disposed on the surface of the first protective film 108 facing away from the polarizing film 110.
  • a protective layer 128 may be formed on the first protective film 108 after removing the other release film.
  • the protective layer 128 having scratch, impact and/or fingerprint resistance can be formed on the first protective film 108 by coating.
  • the coated protective layer 128 has a reduced thickness compared to the prior art in which the polarizer is made of glass as a protective layer, and is more suitable for a flexible display.
  • step S3 may be implemented before or after steps S1 and S2, and the order of step S3 may be adjusted according to actual needs. It can be understood that when the polarizing layer 102 is obtained by using the polarizing plate which has been prepared, if the structure of the polarizing plate is arranged in the direction from the light side to the light exiting side, the release film, the second protective film 112, the polarizing film 110, When the first protective film 110 and the protective layer 128 of the coating layer are formed on the surface of the first protective film 110 facing away from the polarizing film 110, the step S3 can be omitted.
  • the method for preparing the touch display device combines the polarizing function and the touch function. Since the touch layer 104 is located between the polarizing layer 102 and the display panel 106, the polarizing layer 102 and the display panel 106 can be used as a touch.
  • the protective layer of the control layer 104 omits the additional protective layer of the touch layer 104, which further facilitates the preparation of an ultra-thin display device and saves cost.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

一种触控显示装置（100）及其制备方法，该触控显示装置（100）包括偏光层（102）、触控层（104）及显示面板（106）。该偏光层（102）包括第一保护膜（108）、偏光膜（110）及第二保护膜（112），该第一保护膜（108）及该第二保护膜（112）分别设置在该偏光膜（110）相背的两表面上。触控层（104）设置在该第二保护膜（112）背离该偏光膜（110）的表面上。该显示面板（106）设置在该触控层（104）上，该触控层（104）位于该显示面板（106）与该偏光层（102）之间。上述触控显示装置（100）将偏光功能与触控功能相结合，由于触控层（104）位于偏光层（102）与显示面板（106）之间，使得偏光层（102）及显示面板（106）可作为触控层（104）的保护层，省略了额外的触控层（104）的保护层，进一步利于制备超薄显示装置及节省成本。

Description

触控显示装置及触控显示装置的制备方法 技术领域
本发明涉及触摸控制领域，更具体而言，涉及一种具有偏光功能的触控显示装置及一种触控显示装置的制备方法。
背景技术
随着电子显示设备的发展，触摸屏(touch panel)提供了一种新的人机互动界面，其在使用上更直接、更人性化。将触摸屏与平面显示面板整合在一起，形成触控显示装置，能够使平面显示装置具有触控功能，可通过手指、触控笔等执行输入，操作更加直观、简便。
另外，显示装置一般具有偏光片。目前，偏光片包括多层结构，例如，包括偏光膜、位于偏光膜两侧的具有支撑、保护作用的多个膜层，如偏光膜两侧分别设置有支撑保护膜层及支撑保护膜外侧的保护膜层。这种偏光片的结构复杂，成本高。
因此，当触控显示装置具备偏光片时，触控显示装置整体厚度尺寸仍不尽理想，不利于制备超薄显示装置。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明需要提供一种具有偏光功能的触控显示装置及一种触控显示装置的制备方法。
一种触控显示装置，包括偏光层、触控层及显示面板。该偏光层包括第一保护膜、偏光膜及第二保护膜，该第一保护膜及该第二保护膜分别设置在该偏光膜相背的两表面上。触控层设置在该第二保护膜背离该偏光膜的表面上。该显示面板设置在该触控层上，该触控层位于该显示面板与该偏光层之间。
上述触控显示装置将偏光功能与触控功能相结合，由于触控层位于偏光层与显示面板之间，使得偏光层及显示面板可作为触控层的保护层，省略了额外的触控层的保护层，进一步利于制备超薄显示装置及节省成本。
一种触控显示装置的制备方法，包括以下步骤：
S1：在包括偏光膜、及设置在该偏光膜相背两表面上的第一保护膜及第二保护膜的偏光层上形成触控层；
S2：将带有该偏光层的该触控层设置在显示面板上，该触控层位于该显示面板与该偏 光层之间。
上述触控显示装置的制备方法将偏光功能与触控功能相结合，由于触控层位于偏光层与显示面板之间，使得偏光层及显示面板可作为触控层的保护层，省略了额外的触控层的保护层，进一步利于制备超薄显示装置及节省成本。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解，其中：
图1是本发明较佳实施方式的触控显示装置的结构示意图；
图2是本发明较佳实施方式的触摸显示装置连接有柔性电路板的示意图；
图3是本发明较佳实施方式的触摸显示装置的导电图案层的结构示意图；
图4是本发明较佳实施方式的偏光膜的结构示意图；及
图5是本发明较佳实施方式的触摸显示装置的制备方法的流程示意图。
具体实施方式
下面详细描述本发明的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通信；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设定进行描述。当然，它们仅仅为示例，并且 目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设定之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
请参阅图1，本发明较佳实施方式的触控显示装置100包括偏光层102、触控层104及显示面板106。
偏光层102包括第一保护膜108、偏光膜110及第二保护膜112，第一保护膜108及第二保护膜112分别设置在该偏光膜110相背的两表面上。
具体地，第一保护膜108及第二保护膜112可采用TAC(Triacetyl Cellulose，三醋酸纤维素)薄膜，其对偏光膜110具有支撑及保护作用。
偏光膜110可采用高分子材料制造，较佳地，偏光膜110的材料是聚乙烯醇(PVA)，聚乙烯醇具有配向性好、高机械强度、易延伸、高透过率、带电性低及良好的染色性等优点。可以理解，在其它实施方式中，偏光膜110的材料可采用其它适合作为偏光材料的高分子材料。
该触控层104设置在该第二保护膜112背离该偏光膜110的表面上。本实施方式中，触控层104为单层结构，其包括第一图案层114及第二图案层116，该第一图案层114及该第二图案层116处于同一层，该第一图案层114及该第二图案层116之间绝缘。
请结合图2及3，第一图案层114包括第一电极118及第一引线(图未示)，第一引线连接第一电极118并用于连接外部的柔性电路板400。第二图案层116包括第二电极120及第二引线(图未示)，第二引线连接第二电极120并用于连接外部的柔性电路板400，该外部的柔性电路板400连接触控层104及触控层的控制器(控制IC)(图未示)。
请参图3，作为一个例子，第一电极118及第二电极120均呈梳齿状结构，第一电极118及第二电极120间隔交叉形成导电图案。第一电极118及第二电极120可作为触摸电极。第一电极118的材料及第二电极120的材料均可采用石墨烯或纳米银线等材料，并可通过激光蚀刻的方式在导电薄膜制成相应的图案，例如可利用脉冲方式发射激光，并控制激光的强度对导电薄膜进行蚀刻。第一引线的材料及第二引线的材料均可选用导电银浆等材料，并可在第一电极118及第二电极120形成后，通过印刷工艺形成在第二保护膜112上并连接对应的电极。此处仅作为一种实现方式示例，并不限制于本发明实现方式，可以理解的是，触摸图案可以根据具体需求设计，形成触控层104也可以采用本领域其他常用技术手段实现，如通过丝网印刷直接形成所需的触摸图案和引线。
另外，由于第一图案层114及第二图案层116处于同一层，因此，本实施方式的触控 层104能够减少膜层数，将触控显示装置100做得更轻薄，更适用于柔性显示面板。
在一个例子中，可采用已经制作好的偏光片，一般还包括最外层的离型膜，然后剥离该离型膜，之后在第二保护膜112的外表面上直接制作触控层104，如此，可简化制备触控显示装置100的工艺流程。
该显示面板106设置在该触控层104上，该触控层104位于该显示面板106与该偏光层102之间。因此，自显示面板106的出光方向，显示面板106、触控层104及偏光层102依次排列，因此，偏光层102及显示面板106可作为触控层104的保护结构，进行水氧防护，而不需要专门地增加阻水氧膜层。因而，本实施方式的触控显示装置100，在保证对触控层104的水氧防护效果下，降低了触控显示装置100的成本及简化了触控显示装置100的工艺流程。
显示面板106可为液晶显示面板(liquid crystal display，LCD)，也可为有机发光二极管显示面板(OLED面板)等显示面板。显示面板106周缘可连接有柔性电路板500，该柔性电路板500用于连接显示面板106及显示面板的控制器(控制IC)，如图2所示。
当显示面板106采用OLED面板时，偏光膜110为圆偏光膜，作为一种示例，请结合图4，偏光膜110包括线性偏光膜122及位于线性偏光膜122上的光学延迟膜124，该光学延迟膜124设置在线性偏光膜122入光侧的表面上。该光学延迟膜124包括λ/4偏光膜，从而减少外部光的干扰，提高显示对比度。
带有偏光层102的触控层104可通过粘合层126粘合在显示面板106上。粘合层126可为片胶(adhesive)或涂层(coating)。
另外，为了对第一保护膜108进行防刮伤、耐冲击、防指纹等保护，触控显示装置100包括保护层128，该保护层128设置在该第一保护膜108背离该偏光层102的表面上。如此，可对偏光层102进行更全面的保护，延长了偏光层102的使用寿命。保护层128可采用涂布的方式形成在第一保护膜108上。
综上所述，上述触控显示装置100将偏光功能与触控功能相结合，由于触控层104位于偏光层102与显示面板106之间，使得偏光层102及显示面板106可作为触控层104的保护层，省略了额外的触控层104的保护层，进一步利于制备超薄显示装置及节省成本。
请参图5，本发明较佳实施方式提供一种触控显示装置的制备方法。该制备方法可用于制备以上实施方式的触控显示装置100。
该触控显示装置的制备方法包括以下步骤：
S1：在包括偏光膜110、及设置在该偏光膜110相背两表面上的第一保护膜108及第二保护膜112的偏光层102上形成触控层104；
S2：将带有该偏光层102的该触控层104设置在显示面板106上，该触控层104位于该显示面板106与该偏光层102之间。
在步骤S1中，可采用已经制作好的偏光片获得偏光层102。具体的，在步骤S1之前，该触控显示装置的制备方法可以包括步骤S0：移除偏光片的离型膜形成偏光层102。其中，该偏光片包括偏光膜110及分别设置在该偏光膜110相背的两表面上的第一保护膜108及该第二保护膜112，以及设置在该第二保护膜112背离该偏光膜110的表面上的离型膜。
如此，可简化制备触控显示装置100的工艺流程。
已经制作好的偏光片一般具有位于最外层的离型膜。该离型膜是偏光片在制作完成时，为了保护偏光片而设置的可移除的膜层。离型膜可采用结合层(粘胶层)或真空吸附方式设置在偏光片上。
偏光膜110可采用高分子材料制造，较佳地，偏光膜110的材料是聚乙烯醇(PVA)，聚乙烯醇具有配向性好、高机械强度、易延伸、高透过率、带电性低及良好的染色性等优点。
在步骤S0中，移除离型膜的手段可采用从偏光层102上撕下离型膜的方式进行，另外，若离型膜是通过结合层设置在偏光层102上时，在撕下离型膜后，这需要将结合层从偏光层102上移除。
在步骤S1中，本实施方式中，触控层104采用单层结构，其包括第一图案层114及第二图案层116，该第一图案层114及该第二图案层116处于同一层，该第一图案层114及该第二图案层116之间绝缘。
具体地，在移除离型膜、结合层(若有)后，可先在第二保护膜112背离偏光膜110的表面上涂布(coating)一层导电薄膜，再以激光蚀刻方法在该导电薄膜制备出第一电极118及第二电极120。导电薄膜的材料可选用石墨烯或纳米银钱。此处仅作为一种实现方式示例，并不限制于本发明实现方式，可以理解的是，触摸图案可以根据具体需求设计，形成触控层104也可以采用本领域其他常用技术手段实现，如通过丝网印刷直接形成所需的触摸图案和引线。之后，以印刷工艺制备第一引线及第二引线，第一引线连接第一电极118，第二引线连接第二电极120。引线的材料可选用导电银浆。
由于第一图案层114及第二图案层116处于同一层，因此，本实施方式的触控层104能够减少膜层数，将触控显示装置100做得更轻薄，更适用于柔性显示面板。
在步骤S2中，可利用粘合层126将该触控层104粘合在该显示面板106上。粘合层126可为片胶(adhesive)或涂层(coating)。
另外，为了对第一保护膜108进行防刮伤、耐冲击、防指纹等保护，触控显示装置的 制备方法包括以下步骤：
S3：在该第一保护膜108背离该偏光膜110的表面上通过涂层的方式形成保护层128。
具体的，当采用偏光片获得偏光层102时，该偏光片可以还包括分别设置在第一保护膜108背离偏光膜110的表面上的另一离型膜。移除该另一离型膜后的第一保护膜108上可以形成保护层128。如此，可对偏光层102进行更全面的保护，延长了偏光层102的使用寿命。较优的，该具有防刮伤、耐冲击和/或防指纹的保护层128可采用涂层的方式(coating)形成在第一保护膜108上。该涂层式的保护层128相对现有偏光片采用玻璃作为保护层的方式来说，减小了厚度，且更适用于柔性显示屏。
需要指出的是，上述制备方法中，步骤S3可以在步骤S1、S2之前实施，或之间、之后实施，可以根据实际所需调整步骤S3实施的顺序。可以理解的是，当采用已经制作好的偏光片获得偏光层102时，若偏光片的结构按入光侧至出光侧方向依次设置为：离型膜、第二保护膜112、偏光膜110、第一保护膜110以及在第一保护膜110背离偏光膜110的表面形成涂层式的保护层128时，步骤S3即可省略。
综上所述，上述触控显示装置的制备方法将偏光功能与触控功能相结合，由于触控层104位于偏光层102与显示面板106之间，使得偏光层102及显示面板106可作为触控层104的保护层，省略了额外的触控层104的保护层，进一步利于制备超薄显示装置及节省成本。
在本说明书的描述中，参考术语“一个实施方式”、“一些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合所述实施方式或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
尽管已经示出和描述了本发明的实施方式，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施方式进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (13)

  1. 一种触控显示装置，其特征在于，包括：
    偏光层，该偏光层包括第一保护膜、偏光膜及第二保护膜，该第一保护膜及该第二保护膜分别设置在该偏光膜相背的两表面上；
    触控层，该触控层设置在该第二保护膜背离该偏光膜的表面上；及
    显示面板，该显示面板设置在该触控层上，该触控层位于该显示面板与该偏光层之间。
  2. 如权利要求1所述的触控显示装置，其特征在于，该偏光膜包括圆偏光膜。
  3. 如权利要求1所述的触控显示装置，其特征在于，该触控显示装置包括粘合层，该粘合层将该触控层粘合在该显示面板上。
  4. 如权利要求1所述的触控显示装置，其特征在于，该触控层包括第一图案层及第二图案层，该第一图案层及该第二图案层处于同一层，该第一图案层及该第二图案层之间绝缘。
  5. 如权利要求1所述的触控显示装置，其特征在于，该偏光膜的材料是聚乙烯醇。
  6. 如权利要求1所述的触控显示装置，其特征在于，该触控显示装置包括：
    保护层，该保护层设置在该第一保护膜背离该偏光膜的表面上。
  7. 一种触控显示装置的制备方法，其特征在于，包括以下步骤：
    S1：在包括偏光膜、及设置在该偏光膜相背两表面上的第一保护膜及第二保护膜的偏光层上形成触控层；
    S2：将带有该偏光层的该触控层设置在显示面板上，该触控层位于该显示面板与该偏光层之间。
  8. 如权利要求7所述的触控显示装置的制备方法，其特征在于，在步骤S1之前，该触控显示装置的制备方法包括步骤：
    S0：移除偏光片的离型膜形成偏光层，其中，该偏光片包括该偏光膜及分别设置在该偏光膜相背两表面上的该第一保护膜及该第二保护膜，以及设置在该第二保护膜背离该偏 光膜的表面上的离型膜。
  9. 如权利要求7所述的触控显示装置的制备方法，其特征在于，该偏光膜包括圆偏光膜。
  10. 如权利要求7所述的触控显示装置的制备方法，其特征在于，步骤S2包括：
    利用粘合层将该触控层粘合在该显示面板上。
  11. 如权利要求7所述的触控显示装置的制备方法，其特征在于，步骤S1包括：
    在该第二保护膜背离该偏光膜的表面上形成第一图案层及第二图案层，该第一图案层及该第二图案层处于同一层，该第一图案层及该第二图案层之间绝缘，该第一图案层及该第二图案层构成该触控层。
  12. 如权利要求7所述的触控显示装置的制备方法，其特征在于，该偏光膜的材料是聚乙烯醇。
  13. 如权利要求7所述的触控显示装置的制备方法，其特征在于，该制备方法包括以下步骤：
    S3：在该第一保护膜背离该偏光膜的表面上通过涂层的方式形成保护层。
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CN203982335U (zh) * 2014-06-19 2014-12-03 宸鸿科技(厦门)有限公司 触控显示装置
CN104166483A (zh) * 2014-08-27 2014-11-26 昆山龙腾光电有限公司 触控显示装置及其制作方法

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* Cited by examiner, † Cited by third party
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WO2019153356A1 (zh) * 2018-02-12 2019-08-15 深圳市柔宇科技有限公司 触控显示面板与触控显示装置
CN111596779A (zh) * 2019-02-20 2020-08-28 上海和辉光电有限公司 柔性显示装置及其制造方法
CN114019600A (zh) * 2021-11-17 2022-02-08 重庆京东方电子科技有限公司 一种偏光结构层、显示装置及其制备方法
CN114149756A (zh) * 2021-12-01 2022-03-08 业成科技（成都）有限公司 保护膜结构及触控面板

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