WO2021238731A1 - 柔性显示装置及其制造方法 - Google Patents

柔性显示装置及其制造方法 Download PDF

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Publication number
WO2021238731A1
WO2021238731A1 PCT/CN2021/094547 CN2021094547W WO2021238731A1 WO 2021238731 A1 WO2021238731 A1 WO 2021238731A1 CN 2021094547 W CN2021094547 W CN 2021094547W WO 2021238731 A1 WO2021238731 A1 WO 2021238731A1
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Prior art keywords
layer
display device
flexible display
flexible
cover plate
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PCT/CN2021/094547
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English (en)
French (fr)
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刘陆
史世明
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京东方科技集团股份有限公司
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Priority to US17/763,358 priority Critical patent/US20220336775A1/en
Publication of WO2021238731A1 publication Critical patent/WO2021238731A1/zh

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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80Constructional details
    • H10K59/87Passivation; Containers; Encapsulations
    • H10K59/873Encapsulations
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating 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
    • G09F9/301Indicating 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
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/84Passivation; Containers; Encapsulations
    • H10K50/844Encapsulations
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/1201Manufacture or treatment
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301Details of OLEDs
    • H10K2102/311Flexible OLED
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present disclosure relates to the field of display technology, and more particularly to a flexible display device and a manufacturing method thereof.
  • the inward bending technology requires a small bending radius.
  • an inward bending folding screen will also be equipped with a double screen outside, which can be used as a simple display and quick answering and calling.
  • Inward bending technology can have relatively low rigidity requirements for folding screens, but requires higher bending radius.
  • R1 ⁇ R3mm ie, the bending radius R is 1mm ⁇ 3mm
  • ID design the overall design
  • the outward bending display module is to bend the display face of the flexible module outwards.
  • the flexible cover of this flexible module is exposed to the outside, and the whole machine is atmospheric and beautiful.
  • the rigidity and impact resistance of the flexible cover are required to be high. To prevent the key from scratching or impacting the display module to fail.
  • the embodiment of the present disclosure provides a flexible display device, including a display device and a flexible cover plate arranged in the light emitting direction of the display device; a first support layer is arranged between the flexible cover plate and the display device, so The first supporting layer includes at least one organic material layer and at least one inorganic material layer.
  • the first support layer includes a composite film layer composed of the organic material layer and an inorganic material layer, and the thickness of the organic material layer in the composite film layer is 3 to the thickness of the inorganic material layer. 5 times.
  • the first support layer includes at least two of the composite film layers.
  • the first support layer includes 5-25 layers of the composite film layer.
  • the first support layer includes 10-15 layers of the composite film layer.
  • the thickness of the organic material layer is about 1.5 ⁇ m to 7.5 ⁇ m.
  • the thickness of the inorganic material layer is about 0.5 ⁇ m to 1.5 ⁇ m.
  • the material of the organic material layer includes allyl methacrylate, epoxy resin, or carbon-based polycarbonate.
  • the material of the inorganic material layer includes SiN x or SiO x .
  • the inorganic material layer is a stack formed by stacking a material layer composed of SiN x and a material layer composed of SiO x.
  • the flexible display device further includes a connection layer located between the first support layer and the display device.
  • the flexible display device further includes a second support layer, the second support layer is located on a side of the display device away from the first support layer, and the second support layer includes a back Membrane and stainless steel layer.
  • the back film is located between the display device and the stainless steel layer.
  • the back film includes a plastic film and a glue layer.
  • the material of the plastic film includes PET, PI, or PEN.
  • the thickness of the plastic film is about 10 ⁇ m to 100 ⁇ m.
  • the thickness of the adhesive layer is about 10 ⁇ m to 50 ⁇ m
  • the flexible display device further includes a hardened layer, and the hardened layer is located on one side of the flexible cover plate in the light emitting direction.
  • the material of the hardened layer includes an organic material.
  • the organic material includes allyl methacrylate materials.
  • the hardening layer is composed of an organic material doped with an inorganic substance, the organic material is an allyl methacrylate material, and the inorganic substance is an allyl methacrylate material.
  • the doping concentration in the material is less than or equal to 50%.
  • the embodiments of the present disclosure provide a method for manufacturing a flexible display device, including:
  • the first supporting layer includes at least one organic material layer and at least one inorganic material layer.
  • the manufacturing method further includes at least one of the following steps:
  • connection layer Forming a connection layer on the first supporting layer to connect the flexible cover plate formed with the first supporting layer to the display device;
  • a hardened layer is formed on the flexible cover plate, and the hardened layer is located on one side of the flexible cover plate in the light emitting direction.
  • the flexible display device and the manufacturing method thereof provided by the embodiments of the present disclosure adopt a composite structure in which an inorganic layer and an organic layer are added between the flexible cover plate and the display device to provide support for the flexible cover plate.
  • the pencil hardness of the overall module is improved, and the impact resistance of the flexible display device is also improved.
  • FIG. 1 is a schematic structural diagram of an embodiment of a flexible display device provided by an embodiment of the disclosure
  • FIG. 2 is a schematic structural diagram of an embodiment of the first supporting layer in the embodiments of the disclosure.
  • FIG. 3 is a schematic structural diagram of an embodiment of a flexible display device provided by an embodiment of the disclosure.
  • FIG. 4 is a schematic structural diagram of an embodiment of a flexible display device provided by an embodiment of the disclosure.
  • FIG. 5 is a schematic structural diagram of an embodiment of a flexible display device provided by an embodiment of the disclosure.
  • FIG. 6 is a schematic flowchart of a manufacturing method of a flexible display device provided by an embodiment of the disclosure.
  • FIG. 1 shows a schematic structural diagram of an embodiment of a flexible display device provided by an embodiment of the present disclosure.
  • the flexible display device includes a display device 10 and a flexible cover 20 arranged in the light-emitting direction of the display device 10;
  • the supporting layer 30 includes at least one organic material layer 31 and at least one inorganic material layer 32.
  • the organic material layer 31 plays a role of planarization and stress balance, and the inorganic material layer 32 is used to provide support.
  • the manufacturing material of the organic material layer 31 may be allyl methacrylate, epoxy resin, carbon-based polycarbonate, etc.; the manufacturing material of the inorganic material layer 32 may be SiN x or SiO x , preferably, the manufacturing material of the inorganic material layer 32 can be a laminated structure formed by stacking SiN x film layers and SiO x film layers together in a certain ratio to further increase the strength.
  • the number ratio of the SiN x film layer to the SiO x film layer is not limited, and it can be set as required.
  • the display device in this embodiment can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, notebook computer, digital photo frame, navigator, etc.
  • the flexible display device provided by the embodiments of the present disclosure adopts a composite structure in which an inorganic layer and an organic layer are added between the flexible cover and the display device to provide support for the flexible cover and improve
  • the pencil hardness of the overall module also improves the impact resistance of the flexible display device.
  • the display device 10 may be an active matrix organic light emitting diode display device (AMOLED).
  • AMOLED display device may be a display device that integrates the functions of a touch panel (TP) and a circular polarizer (CPOL).
  • the cover film can be made of transparent polyimide (PI) or a substrate such as polyethylene terephthalate (PET).
  • PI transparent polyimide
  • PET polyethylene terephthalate
  • the first support layer 30 includes a composite film layer composed of the organic material layer 31 and the inorganic material layer 32.
  • the thickness of the organic material layer 31 is 3 to 5 times the thickness of the inorganic material layer 32.
  • the thickness of the inorganic material layer is about 0.5 to 1.5 ⁇ m, and the thickness of the organic material layer is about 1.5 to 7.5 ⁇ m.
  • the inorganic material layer can provide hardness and play a supporting role. However, if the inorganic material layer is too thick, it is easy to break (especially when it is bent), which will reduce the flexibility of the flexible display device. Therefore, the use of inorganic material When the material layer increases the hardness, the inorganic material layer cannot be made too thick, and the organic material layer can increase the flexibility to a certain extent. In this way, when the hardness needs to be increased, the laminated arrangement of the composite film layer composed of the organic material layer 31 and the inorganic material layer 32 can be adopted. The problem of fracture of the inorganic material layer due to being too thick does not occur.
  • the first support layer 30 includes at least two of the composite film layers.
  • the first support layer 30 includes 5-25 layers of the composite film layer.
  • the first supporting layer 30 when the first supporting layer 30 includes 10-15 layers of the composite film layer, its supporting and impact resistance effects are better.
  • a connection layer 40 is further provided between the first support layer 30 and the display device 10 to connect the display device 10 and the first support layer The 30 is bonded together to prevent the display device 10 and the first support layer 30 from being misaligned.
  • the thickness of the connection layer 40 can be appropriately reduced.
  • the thickness of the connection layer 40 can be selected to be 25-50 ⁇ m.
  • the flexible display device further includes a second support layer 50, which is located on a side surface of the display device 10 away from the first support layer ( That is, the light incident side of the display device 10), and the second support layer 50 includes a back film and a stainless steel layer (SUS); wherein, the back film is mainly used in the manufacturing process of the entire flexible display device.
  • SUS stainless steel layer
  • the back film includes a plastic film and a glue layer, wherein the plastic film can be made of PET, PI, polyethylene naphthalate (PEN), etc.; The thickness is about 10-100 ⁇ m, and the thickness of the glue layer is about 10-50 ⁇ m. In some embodiments, the back film is disposed between the display device 10 and the stainless steel layer.
  • the plastic film can be made of PET, PI, polyethylene naphthalate (PEN), etc.
  • the thickness is about 10-100 ⁇ m, and the thickness of the glue layer is about 10-50 ⁇ m.
  • the back film is disposed between the display device 10 and the stainless steel layer.
  • a hard coating 60 is provided on one side of the flexible cover plate 20 in the light emitting direction to improve the pencil hardness of the flexible display device.
  • the manufacturing material of the hardening layer 60 may be an organic material of the allyl methacrylate type; preferably, the manufacturing material of the hardening layer 60 may be methacrylic doped with inorganic substances. In some embodiments, the doping concentration of the inorganic substance may be less than or equal to 50%.
  • FIG. 6 shows a schematic flowchart of a method for manufacturing a flexible display device provided by an embodiment of the present disclosure.
  • the manufacturing method of the flexible display device includes:
  • Step 702 forming a display device
  • Step 704 forming a flexible cover plate
  • Step 706 forming a first supporting layer on one side of the flexible cover plate in the light emitting direction;
  • Step 708 Connect the flexible cover plate formed with the first support layer to the display device, and the flexible cover plate is located on one side of the light emitting direction of the display device;
  • the first supporting layer includes at least one organic material layer and at least one inorganic material layer.
  • the inorganic material layer may be manufactured by a plasma chemical vapor deposition process (PCVD), and the organic material layer may be manufactured by a process such as spin coating and printing.
  • PCVD plasma chemical vapor deposition process
  • the method for manufacturing the flexible display device provided by the embodiments of the present disclosure provides support for the flexible cover plate by adding a composite structure of an inorganic layer and an organic layer between the flexible cover plate and the display device. Furthermore, the pencil hardness of the overall module is improved, and the impact resistance of the flexible display device is also improved.
  • the manufacturing method further includes at least one of the following steps:
  • connection layer Forming a connection layer on the first supporting layer to connect the flexible cover plate formed with the first supporting layer to the display device;
  • a hardened layer is formed on the flexible cover plate, and the hardened layer is located on one side of the flexible cover plate in the light emitting direction.
  • layer formation operations include, but are not limited to (chemical phase, physical phase) deposition film formation, (magnetron) sputtering film formation, and those skilled in the art can understand that after each layer is formed, Corresponding patterns can be further formed on it as required, which will not be repeated in this disclosure.

Abstract

一种柔性显示装置及其制造方法,包括显示器件(10)和设置在所述显示器件(10)出光方向上的柔性盖板(20);所述柔性盖板(20)和所述显示器件(10)之间设置有第一支撑层(30),所述第一支撑层(30)包括至少一层有机材料层(31)和至少一层无机材料层(32)。所述柔性显示装置及其制造方法能够在一定程度上提高整体模组的铅笔硬度。

Description

柔性显示装置及其制造方法
相关申请的交叉引用
本申请要求于2020年5月28日在中国知识产权局提交的中国专利申请No.202010468954.0的优先权,其公开内容以引用方式整体并入本文中。
技术领域
本公开涉及显示技术领域,尤其涉及一种柔性显示装置及其制造方法。
背景技术
随着柔性显示技术的发展,固定曲率弯曲屏、折叠屏、腕带、卷曲屏等应用形式层出不穷,给柔性显示屏设计注入了新的活力。
内弯技术要求弯折半径小,搭载内弯折折叠屏为了显示方便还会在外面搭载一个复屏,作为简单显示和快速接打电话使用。内弯技术对折叠屏幕的硬度要求可以相对低一点,但是对弯折半径要求较高,R1~R3mm(即,弯折半径R为1mm~3mm)对于整机外形设计(ID设计)是比较美观的。
外弯显示模组是把柔性模组显示面向外弯折,这个柔性模组的柔性盖板暴露在外面,整机大气、漂亮。但是对柔性盖板的硬度及抗冲击性能要求高。以防止钥匙划伤或者冲击显示模组失效。
发明内容
本公开实施例提供了一种柔性显示装置,包括显示器件和设置在所述显示器件出光方向上的柔性盖板;所述柔性盖板和所述显示器件之间设置有第一支撑层,所述第一支撑层包括至少一层有机材料层和至少一层无机材料层。
在一些实施方式中,所述第一支撑层包括由所述有机材料层和无机材料层构成的复合膜层,所述复合膜层中的有机材料层的厚度为无机材料层的厚度的3~5倍。
在一些实施方式中,所述第一支撑层包括至少两层所述复合膜层。
在一些实施方式中,所述第一支撑层包括5-25层所述复合膜层。
在一些实施方式中,所述第一支撑层包括10-15层所述复合膜层。
在一些实施方式中所述有机材料层的厚度为约1.5μm~7.5μm。
在一些实施方式中,所述无机材料层的厚度为约0.5μm~1.5μm。
在一些实施方式中,所述有机材料层的材料包括甲基丙基酸烯酯类、环氧树脂或碳基聚碳酸酯。
在一些实施方式中,所述无机材料层的材料包括SiN x或者SiO x
在一些实施方式中,所述无机材料层是SiN x构成的材料层和由SiO x构成的材料层堆叠在一起形成的叠层。
在一些实施方式中,所述柔性显示装置还包括连接层,所述连接层位于所述第一支撑层和所述显示器件之间。
在一些实施方式中,所述柔性显示装置,还包括第二支撑层,所述第二支撑层位于所述显示器件远离所述第一支撑层的一侧,且所述第二支撑层包括背膜和不锈钢层。
在一些实施方式中,所述背膜位于所述显示器件和所述不锈钢层之间。
在一些实施方式中,所述背膜包括塑料膜和胶层。
在一些实施方式中,所述塑料膜的材料包括PET、PI或PEN。
在一些实施方式中,所述塑料膜的厚度为约10μm~100μm。
在一些实施方式中,所述胶层的厚度为约10μm~50μm
在一些实施方式中,所述柔性显示装置还包括硬化层,所述硬化层位于所述柔性盖板的出光方向一侧。
在一些实施方式中,所述硬化层的材料包括有机材料。
在一些实施方式中,所述有机材料包括甲基丙基酸烯酯类材料。
在一些实施方式中,所述硬化层由掺杂有无机物的有机材料构成,所述有机材料是甲基丙基酸烯酯类材料,且所述无机物在甲基丙基酸烯酯类材料中的掺杂浓度小于或等于50%。
本公开实施例提供了一种柔性显示装置的制造方法,包括:
形成显示器件;
形成柔性盖板;
在所述柔性盖板出光方向一侧的表面上形成第一支撑层;
将形成有所述第一支撑层的所述柔性盖板与所述显示器件连接,且所述 柔性盖板位于所述显示器件出光方向一侧;
其中,所述第一支撑层包括至少一层有机材料层和至少一层无机材料层。
在一些实施方式中,所述制造方法还包括以下步骤至少其一:
在所述第一支撑层上形成连接层,用以使形成有所述第一支撑层的所述柔性盖板与所述显示器件连接;
在所述显示器件上形成第二支撑层,且所述第二支撑层位于所述显示器件的入光方向一侧;
在所述柔性盖板上形成硬化层,且所述硬化层位于所述柔性盖板的出光方向一侧。
从上面所述可以看出,本公开实施例提供的柔性显示装置及其制造方法,采用在柔性盖板和显示器件之间加入无机层和有机层的复合结构,来给柔性盖板提供支撑进而提高整体模组的铅笔硬度,同时也提高了所述柔性显示装置的抗冲击性能。
附图说明
为了更清楚地说明本公开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公开的一些实施例,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为本公开实施例提供的柔性显示装置的一个实施例的结构示意图;
图2为本公开实施例中第一支撑层的一个实施例的结构示意图;
图3为本公开实施例提供的柔性显示装置的一个实施例的结构示意图;
图4为本公开实施例提供的柔性显示装置的一个实施例的结构示意图;
图5为本公开实施例提供的柔性显示装置的一个实施例的结构示意图;
图6为本公开实施例提供的柔性显示装置的制造方法的流程示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚明白,以下结合具体实施例,并参照附图,对本公开进一步详细说明。
需要说明的是,除非另外定义,本公开实施例使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性,而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同,而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接,而是可以包括电性的连接,不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系,当被描述对象的绝对位置改变后,则该相对位置关系也可能相应地改变。
相关技术中,在柔性显示器件在弯折过程中,由于每层功能层之间会发生错动,通常是采用透明胶作为连接层(把两个功能层贴合在一起)的同时作为应力释放层,应力释放层的作用要求胶材的模量比较低的同时还要具有一定的厚度,以提供足够的错动能力以释放应力。但是低模量同时又较厚的连接层的加入相当于在柔性盖板下面加入软性支撑,会使得柔性盖板的铅笔硬度降低。通常模组(MDL,module)的硬度会比单层的柔性盖板硬度下降4~6个等级。
图1示出了本公开实施例提供的柔性显示装置的一个实施例的结构示意图。
如图1所示,所述柔性显示装置包括显示器件10和设置在所述显示器件10出光方向上的柔性盖板20;所述柔性盖板20和所述显示器件10之间设置有第一支撑层30,所述第一支撑层30包括至少一层有机材料层31和至少一层无机材料层32。
其中,所述有机材料层31起到平坦化以及应力平衡的作用,所述无机材料层32用以提供支撑。
在一些实施方式中,所述有机材料层31的制造材料可以是甲基丙基酸烯酯类、环氧树脂、碳基聚碳酸酯,等等;所述无机材料层32的制造材料可以是SiN x或者SiO x,较佳地,所述无机材料层32的制造材料可以是SiN x膜层与SiO x膜层的一定数量比例堆叠在一起构成的叠层结构,以进一步增加强度。本实施例中对SiN x膜层与SiO x膜层的数量比例不做限定,可以根据 需要设定。
需要说明的是,本实施例中的显示装置可以为:电子纸、手机、平板电脑、电视机、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
从上述实施例可以看出,本公开的实施例提供的所述柔性显示装置,采用在柔性盖板和显示器件之间加入无机层和有机层的复合结构,来给柔性盖板提供支撑进而提高整体模组的铅笔硬度,同时也提高了所述柔性显示装置的抗冲击性能。
在一些实施方式中,所述显示器件10可以是有源矩阵有机发光二极管显示器件(AMOLED)。在一些实施方式中,所述AMOLED显示器件可以是将触控板(TP)和圆偏振片(CPOL)的功能整合在一起的显示器件。
在一些实施方式中,所述柔性盖板(Cover Film)可以是透明聚酰亚胺(PI)材质也可以是聚对苯二甲酸乙二醇酯(PET)等基材。
参考图2所示,本公开的一个或多个实施例中,所述第一支撑层30包括由所述有机材料层31和无机材料层32构成的复合膜层,所述复合膜层中的有机材料层31的厚度为无机材料层32的厚度的3~5倍。在一些实施方式中,所述无机材料层的厚度约为0.5~1.5μm,所述有机材料层的厚度约为1.5~7.5μm。
一般地,无机材料层可以提供硬度,从而起到支撑作用,但是无机材料层过厚则容易断裂(特别是在被弯折的时候),这样会导致柔性显示装置的柔性降低,因此,利用无机材料层增加硬度时,不能将无机材料层做得过厚,搭配有机材料层则可以在一定程度上增加柔性。这样,在需要提高硬度的情况下,可以采用由所述有机材料层31和无机材料层32构成的复合膜层的层叠设置方式,一方面利用多层无机材料层增加了硬度,另一方面又不会发生无机材料层因为过厚而发生断裂的问题。
在一些实施方式中,所述第一支撑层30包括至少两层所述复合膜层。
在一些实施方式中,所述第一支撑层30包括5-25层所述复合膜层。
在一些实施方式中,所述第一支撑层30包括10-15层所述复合膜层时,其支撑和抗冲击效果较佳。
参考图3所示,本公开的一个或多个实施例中,所述第一支撑层30和 所述显示器件10之间还设置有连接层40,用以将显示器件10与第一支撑层30贴合在一起,防止显示器件10与第一支撑层30之间错位。
在一些实施方式中,基于所述第一支撑层30中的有机材料层提供的应力平衡作用,所述连接层40的厚度可以适当降低,例如,连接层40的厚度可选择为25~50μm。
参考图4所示,本公开的一个或多个实施例中,所述柔性显示装置还包括第二支撑层50,其位于位于所述显示器件10远离所述第一支撑层的一侧表面(即,显示器件10的入光方向一侧),且所述第二支撑层50包括背膜和不锈钢层(SUS);其中,所述背膜主要在整个柔性显示装置的制造工艺过程中起到保护作用;SUS由于其弹性模量较高,可以起到降低折痕的作用。
在一些实施方式中,所述背膜包括塑料膜和胶层,其中,塑料膜的制造材料可以是PET、PI、聚萘二甲酸乙二醇酯(PEN),等等;所述塑料膜的厚度约为10~100μm,所述胶层的厚度约为10~50μm。在一些实施方式中,所述背膜设置在所述显示器件10和不锈钢层之间。
参考图5所示,本公开的一个或多个实施例中,所述柔性盖板20的出光方向一侧设置有硬化层60(hard coating),用以提高所述柔性显示装置的铅笔硬度。
在一些实施方式中,所述硬化层60的制造材料可以是甲基丙基酸烯酯类的有机材料;较佳地,所述硬化层60的制造材料可以是无机物掺杂的甲基丙基酸烯酯类,从而进一步提高硬度;在一些实施方式中,所述无机物的掺杂浓度可以是小于或等于50%。
图6示出了本公开实施例提供的柔性显示装置的制造方法的流程示意图。
如图6所示,所述柔性显示装置的制造方法,包括:
步骤702:形成显示器件;
步骤704:形成柔性盖板;
步骤706:在所述柔性盖板出光方向一侧上形成第一支撑层;
步骤708:将形成有所述第一支撑层的所述柔性盖板与所述显示器件连接,且所述柔性盖板位于所述显示器件出光方向一侧;
其中,所述第一支撑层包括至少一层有机材料层和至少一层无机材料 层。
在一些实施方式中,所述无机材料层可以采用等离子体化学气相沉积工艺(PCVD)来制造,所述有机材料层可以采用旋涂、打印等工艺来制造。
从上述实施例可以看出,本公开实施例提供的所述柔性显示装置的制造方法,通过在柔性盖板和显示器件之间加入无机层和有机层的复合结构,来给柔性盖板提供支撑进而提高整体模组的铅笔硬度,同时也提高了所述柔性显示装置的抗冲击性能。
在一些实施方式中,所述制造方法还包括以下步骤至少其一:
在所述第一支撑层上形成连接层,用以使形成有所述第一支撑层的所述柔性盖板与所述显示器件连接;
在所述显示器件上形成第二支撑层,且所述第二支撑层位于所述显示器件的入光方向一侧;
在所述柔性盖板上形成硬化层,且所述硬化层位于所述柔性盖板的出光方向一侧。
需要说明的是,上述形成层的操作,包括但不仅限于(化学相、物理相)沉积成膜、(磁控)溅射成膜,并且本领域技术人员可以理解,在形成每个层之后,可以根据需要在其上进一步形成相应的图案,本公开对此不再赘述。
需要指出的是,在附图中,为了图示的清晰可能夸大了层和区域的尺寸。而且可以理解,当元件或层被称为在另一元件或层“上”时,它可以直接在其他元件上,或者可以存在中间的层。另外,可以理解,当元件或层被称为在另一元件或层“下”时,它可以直接在其他元件下,或者可以存在一个以上的中间的层或元件。另外,还可以理解,当层或元件被称为在两层或两个元件“之间”时,它可以为两层或两个元件之间惟一的层,或还可以存在一个以上的中间层或元件。通篇相似的参考标记指示相似的元件。
所属领域的普通技术人员应当理解:以上所述仅为本公开的具体实施例而已,并不用于限制本公开,凡在本公开的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本公开的保护范围之内。

Claims (23)

  1. 一种柔性显示装置,包括显示器件和设置在所述显示器件出光方向上的柔性盖板;所述柔性盖板和所述显示器件之间设置有第一支撑层,所述第一支撑层包括至少一层有机材料层和至少一层无机材料层。
  2. 根据权利要求1所述的柔性显示装置,其中,所述第一支撑层包括由所述有机材料层和无机材料层构成的复合膜层,所述复合膜层中的有机材料层的厚度为无机材料层的厚度的3~5倍。
  3. 根据权利要求2所述的柔性显示装置,其中,所述第一支撑层包括至少两层所述复合膜层。
  4. 根据权利要求3所述的柔性显示装置,其中,所述第一支撑层包括5-25层所述复合膜层。
  5. 根据权利要求4所述的柔性显示装置,其中,所述第一支撑层包括10-15层所述复合膜层。
  6. 根据权利要求1-5中任一项所述的柔性显示装置,其中,所述有机材料层的厚度为约1.5μm~7.5μm。
  7. 根据权利要求1-6中任一项所述的柔性显示装置,其中,所述无机材料层的厚度为约0.5μm~1.5μm。
  8. 根据权利要求1-7中任一项所述的柔性显示装置,其中,所述有机材料层的材料包括甲基丙基酸烯酯类、环氧树脂或碳基聚碳酸酯。
  9. 根据权利要求1-8中任一项所述的柔性显示装置,其中,所述无机材料层的材料包括SiN x或者SiO x
  10. 根据权利要求9所述的柔性显示装置,其中,所述无机材料层是SiN x构成的材料层和由SiO x构成的材料层堆叠在一起形成的叠层。
  11. 根据权利要求1所述的柔性显示装置,还包括连接层,所述连接层位于所述第一支撑层和所述显示器件之间。
  12. 根据权利要求1所述的柔性显示装置,还包括第二支撑层,所述第二支撑层位于所述显示器件远离所述第一支撑层的一侧,且所述第二支撑层包括背膜和不锈钢层。
  13. 根据权利要求12所述的柔性显示装置,其中,所述背膜位于所述显示器件和所述不锈钢层之间。
  14. 根据权利要求13所述的柔性显示装置,其中,所述背膜包括塑料膜和胶层。
  15. 根据权利要求14所述的柔性显示装置,其中,所述塑料膜的材料包括PET、PI或PEN。
  16. 根据权利要求14所述的柔性显示装置,其中,所述塑料膜的厚度为约10μm~100μm。
  17. 根据权利要求14-16中任一项所述的柔性显示装置,其中,所述胶层的厚度为约10μm~50μm
  18. 根据权利要求1所述的柔性显示装置,还包括硬化层,所述硬化层位于所述柔性盖板的出光方向一侧。
  19. 根据权利要求18所述的柔性显示装置,所述硬化层的材料包括有机材料。
  20. 根据权利要求19所述的柔性显示装置,所述有机材料包括甲基丙基酸烯酯类材料。
  21. 根据权利要求18所述的柔性显示装置,所述硬化层由掺杂有无机物的有机材料构成,所述有机材料是甲基丙基酸烯酯类材料,且所述无机物在甲基丙基酸烯酯类材料中的掺杂浓度小于或等于50%。
  22. 一种柔性显示装置的制造方法,包括:
    形成显示器件;
    形成柔性盖板;
    在所述柔性盖板出光方向一侧的表面上形成第一支撑层;
    将形成有所述第一支撑层的所述柔性盖板与所述显示器件连接,且所述柔性盖板位于所述显示器件出光方向一侧;
    其中,所述第一支撑层包括至少一层有机材料层和至少一层无机材料层。
  23. 根据权利要求22所述的方法,其中,所述制造方法还包括以下步骤至少其一:
    在所述第一支撑层上形成连接层,用以使形成有所述第一支撑层的所述柔性盖板与所述显示器件连接;
    在所述显示器件上形成第二支撑层,且所述第二支撑层位于所述显示器件的入光方向一侧;
    在所述柔性盖板上形成硬化层,且所述硬化层位于所述柔性盖板的出光方向一侧。
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