WO2020034666A1 - 柔性显示屏及显示装置 - Google Patents

柔性显示屏及显示装置 Download PDF

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Publication number
WO2020034666A1
WO2020034666A1 PCT/CN2019/085065 CN2019085065W WO2020034666A1 WO 2020034666 A1 WO2020034666 A1 WO 2020034666A1 CN 2019085065 W CN2019085065 W CN 2019085065W WO 2020034666 A1 WO2020034666 A1 WO 2020034666A1
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WIPO (PCT)
Prior art keywords
layer
display
flexible
disposed
rigid
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Application number
PCT/CN2019/085065
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English (en)
French (fr)
Inventor
张伟
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云谷（固安）科技有限公司
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Application filed by 云谷（固安）科技有限公司 filed Critical 云谷（固安）科技有限公司
Publication of WO2020034666A1 publication Critical patent/WO2020034666A1/zh
Priority to US16/801,186 priority Critical patent/US11217125B2/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/842—Containers
    • H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/868—Arrangements for polarized light emission
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • H10K59/8722—Peripheral sealing arrangements, e.g. adhesives, sealants
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8793—Arrangements for polarized light emission
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present application relates to the field of flexible displays, and in particular, to a flexible display and a display device using the flexible display.
  • a flexible display screen and a display device using the flexible display screen are provided.
  • a flexible display screen includes: a display layer having a light emitting surface; a flexible cover layer provided on the light emitting surface of the display layer; a rigid layer that is transparent to light and is provided on the display layer and the display layer; Between flexible cover layers; and a buffer layer disposed between the display layer and the flexible cover layer, and a projection of the buffer layer on the flexible cover layer is located on the flexible cover layer edge.
  • the rigid layer covers the display layer.
  • the buffer layer is disposed between the rigid layer and the flexible cover layer.
  • a first adhesive layer is disposed between the flexible cover layer and the rigid layer
  • a second adhesive layer is disposed between the rigid layer and the display layer
  • the first adhesive layer has a protrusion.
  • the protruding portion is in contact with the flexible cover plate
  • the buffer layer is provided on the periphery of the protruding portion.
  • the buffer layer is disposed between the rigid layer and the display layer.
  • a first adhesive layer is disposed between the flexible cover layer and the rigid layer
  • a second adhesive layer is disposed between the rigid layer and the display layer
  • the second adhesive layer has a protrusion.
  • the protruding portion is in contact with the rigid layer
  • the buffer layer is provided on the periphery of the protruding portion.
  • the thickness of the rigid layer is 50 ⁇ m to 70 ⁇ m.
  • the flexible display screen further includes a light shielding layer, the light shielding layer is attached to an edge of the surface of the flexible cover layer near the display layer, and the buffer layer is attached to the light shielding layer on.
  • the flexible display screen further includes a touch layer, and the touch layer is disposed between the display layer and the rigid layer.
  • the buffer layer is made of a light-impermeable material.
  • a material of the buffer layer is an elastic material.
  • a material of the buffer layer includes at least one of foam or silicone.
  • the buffer layer has a honeycomb structure.
  • the buffer layer has an arched structure.
  • the display layer includes a support film and a light emitting device layer disposed on the support film.
  • the display layer includes a shielding layer disposed on the light emitting device layer, and used to shield oxidation or pollution of the light emitting device layer.
  • the display layer includes a polarizer disposed on the shielding layer, and a third adhesive layer is provided between the polarizer and the touch layer.
  • a display device including the aforementioned flexible display screen.
  • FIG. 1 is a cross-sectional view of a flexible display screen according to an embodiment.
  • FIG. 2 is a cross-sectional view of a flexible display screen according to another embodiment.
  • FIG. 3 is a cross-sectional view of a flexible display screen according to still another embodiment.
  • a flexible display screen 100 includes a display layer 110 and a flexible cover layer 120 laminated on the display layer 110.
  • the display layer 110 is used to display an image.
  • the display layer 110 may include different display components such as a thin film transistor, a gate line, a data line, a capacitor, an anode, a cathode, an organic light emitting layer, a color filter film, and a touch layer (not shown). ).
  • the flexible cover layer 120 is disposed on the light emitting surface of the display layer 110 to protect the display components of the display layer 110.
  • a flexible cover 120 is used to protect the display components on the display layer 110.
  • the impact resistance of the flexible cover 120 is relatively weak.
  • black spots, bright spots, or colorful spots may appear on the flexible display screen when hit by a small ball. This is because the moment when the flexible cover 120 is hit by a heavy object, the stress concentration cannot be dispersed, which causes the impact force to be directly transmitted to the display layer 110, and the display components in the display layer 110 are damaged.
  • the flexible display 100 further includes a rigid layer 130 and a buffer layer 140 that can transmit light.
  • the rigid layer 130 and the buffer layer 140 are disposed between the flexible cover layer 120 and the display layer 110, and the rigid layer 130 and the buffer layer 140 are provided in a stacked manner.
  • the projection of the buffer layer 140 on the flexible cover layer 120 is located on the edge of the flexible cover layer 120, that is, the buffer layer 140 is disposed at the frame position of the flexible display 100.
  • the lower surface edge of the flexible cover layer 120 is light-shielded to enhance the display effect of the flexible display screen 100.
  • the buffer layer 140 has a buffer structure and can absorb an impact force.
  • the rigid layer 130 has a certain rigidity, and its rigidity is stronger than that of the flexible cover plate, so that the impact force received by the flexible cover layer 120 can be dispersed laterally along the screen body to avoid stress concentration.
  • the flexible display 110 includes a stacked display layer 110, a rigid layer 130, a buffer layer 140, and a flexible cover layer 120.
  • the rigid layer 130 and the buffer layer 140 are disposed between the display layer 110 and the flexible cover layer 120.
  • the rigid layer 130 can enhance the rigidity of the flexible cover layer 120.
  • the rigid layer 130 can transmit the impact of the external force along the screen body, dispersing the stress concentration, and avoiding the vertical transmission of external force impact.
  • the display layer 110 is damaged.
  • the buffer layer 140 can absorb impact stress, which further improves the impact resistance of the flexible display screen 100.
  • the projection of the buffer layer 140 on the flexible cover layer 120 is located on the edge of the flexible cover layer 120, so that the buffer layer 140 buffers the display layer while preventing the buffer layer 140 from affecting the light output of the display layer.
  • the positional relationship between the rigid layer 130 and the buffer layer 140 is not limited.
  • the buffer layer 140 may be disposed between the flexible cover layer 120 and the rigid layer 130. That is, the buffer layer 140 is disposed on a surface of the rigid layer 130 near the flexible cover layer 120. Therefore, when the flexible cover layer 120 receives an impact force, the impact stress is weakened by the absorption of the buffer layer 140 and then transmitted to the rigid layer 130 for dispersion, thereby reducing the impact stress on the display layer 110.
  • the buffer layer 140 may also be disposed between the display layer 110 and the rigid layer 130, that is, the buffer layer 140 is disposed on a surface of the rigid layer 130 close to the display layer 110.
  • the impact stress will be uniformly dispersed across the entire surface of the buffer layer 140 through the lateral transmission of the rigid layer 130 to avoid stress concentration and then weaken the impact through the absorption of the buffer layer. stress.
  • the stress impact on the display layer 110 is greatly reduced.
  • the impact resistance of the flexible display 100 is improved.
  • the rigid layer 130 covers the display layer 110, so that the rigid layer 130 can protect the entire display layer 110. No matter which position on the surface of the display layer 110 is impacted, the rigid layer 130 can disperse the impact stress to the entire surface of the display layer 110 in advance, which prevents the impact stress from being concentrated in a certain position, causing damage to the display device at that position.
  • the rigid layer 110 is a light-transmitting material with a certain rigidity, such as ultra-thin glass.
  • the thickness of the rigid layer 130 needs to be as thin as possible, but considering the difficulty of the manufacturing process and the cost, the rigid layer 130 should not be too thin.
  • the thickness of the rigid layer 130 is 50 ⁇ m to 70 ⁇ m.
  • the thickness of 50 ⁇ m is a relatively thin thickness that can be achieved by current industry processes; at the same time, to ensure the flexibility of the flexible display 100
  • the overall thickness the thickness of the rigid layer 130 needs to be guaranteed to be less than 70 ⁇ m.
  • the buffer layer 130 is an elastic buffer layer, such as foam or silicone.
  • the buffer layer 130 has some buffer structures.
  • the buffer layer 130 has a honeycomb structure or a plurality of arched structures. When the impact is applied by an external force, the honeycomb structure or the arched structure can absorb and disperse the impact stress, thereby Play a buffer effect.
  • the flexible display 200 includes a stacked display layer 210, a rigid layer 240, a buffer layer 230, and a flexible cover layer 220, wherein the display layer 210 has a light emitting surface 215 for displaying an image.
  • the flexible cover layer 220 is disposed on the light emitting surface 215 side of the display layer 210.
  • the rigid layer 240 and the buffer layer 230 are disposed between the display layer 210 and the rigid layer 240.
  • the flexible cover 220 has a light-transmitting light-transmitting region 201 and a light-opaque light-blocking region 202
  • the rigid layer 240 is a light-transmitting rigid material, such as ultra-thin glass.
  • the rigid layer 240 covers the light emitting surface 215 of the display layer.
  • the buffer layer 230 is an opaque material, such as foam.
  • the buffer layer 230 is disposed on a surface edge of the flexible cover plate 220 near the display layer 210 so that the edge of the flexible cover plate 220 forms a light-shielding light-shielding region 202.
  • the flexible cover 220 is protected from light while buffering and protecting the non-display area of the frame position of the display layer 210, thereby beautifying the flexible display 200 and further improving the display effect of the flexible display.
  • the buffer layer 230 may also be a light-transmitting buffer colloid, such as silica gel.
  • the light-shielding region 202 of the flexible cover plate 220 may be implemented in other ways.
  • the flexible display screen 200 further includes a light shielding layer 250, which is attached to an edge of the surface of the flexible cover layer 220 near the display layer 210 so as to face the edge of the flexible display body 200. Shading is performed to form a shading region 202 to improve the display effect.
  • the buffer layer 230 may be disposed on the surface of the light-shielding layer 250. At this time, the buffer layer 230 may be a light-transmitting buffer material to implement buffer protection for the display layer 210.
  • the buffer layer 230 may also be an opaque buffer material. While buffering and protecting the display layer 210, the buffer layer 230 and the light shielding layer 250 together play a double light shielding effect on the flexible display screen 200. Further, the material of the light shielding layer is ink.
  • the flexible display screen 200 further includes a touch layer 260.
  • the touch layer 260 is disposed between the display layer 210 and the rigid layer 240, and a touch circuit (not shown) is disposed on the touch layer 260.
  • the touch screen 260 includes a visible area 261 and a non-visible area 262 located outside the visible area 261, and the touch circuit is disposed in the visible area 261.
  • the displayable area 261 corresponds to the light-transmitting area 201 of the flexible display screen 200
  • the non-visible area 262 corresponds to the non-light-transmitting area 202 of the flexible display screen 200.
  • the non-visible area 262 can be hidden by the light-shielding area 202, which reduces the color difference effect caused by the light transmission at the edge of the visible area 261, and beautifies the flexible display 200.
  • the flexible display 200 further includes a first adhesive layer 271 and a second adhesive layer 272. Further, the first adhesive layer 271 is disposed on the flexible cover layer 120 and is rigid. Between the layers 240, a second adhesive layer 272 is disposed between the rigid layer 240 and the display layer 210. The first adhesive layer 271 and the second adhesive layer 272 are used as adhesives to adhere the flexible cover layer 220 and the rigid layer 240, and the rigid layer 240 and the display layer 210. Further, the first adhesive layer 271 and the second adhesive layer 272 are both optical adhesives. The optical adhesives are colorless and transparent, have a light transmittance of more than 90%, and have good bonding strength. They can be cured at room temperature or medium temperature, and they are cured. Small shrinkage and other characteristics.
  • the middle portion of the first adhesive layer 271 has a protruding portion 2711 protruding outward, the protruding portion 2711 abuts the flexible cover layer 220, and the buffer layer 230 is provided on the protruding portion.
  • the raised portion 2711 is used to support the flexible cover plate 220 to prevent the middle of the flexible cover plate 220 from sinking.
  • the buffer layer 230 is provided on the periphery of the protruding portion 2711, so that the protruding portion 2711 plays a role of fixing the buffer layer 230.
  • a middle portion of the second adhesive layer 272 has a convex portion protruding outward, and the convex portion abuts the rigid layer 240.
  • the buffer layer 230 is disposed on the second adhesive layer. The periphery of the raised portion of the layer 272.
  • the display layer 210 has a display area 216 for displaying an image, and a non-display area 217 located outside the display area 216.
  • On the display area 216 light emitting elements (not shown), pixel arrays (not shown), and the like are distributed for display. Image parts.
  • the non-display area 217 is arranged with integrated circuits (not shown) for implementing functions such as signal transmission and driving light emitting components to emit light.
  • the display area 216 corresponds to the light-transmitting area 201, so that the image displayed on the display area 216 passes through the light-transmitting area 201 and is visible to the user.
  • the non-display area 217 corresponds to the light-shielding area 202, so that the light-shielding area 202 hides the non-display area 217 and beautifies the flexible display screen 200.
  • the display layer 210 includes a support film 211 for supporting the flexible display screen 200.
  • a light emitting device layer 212 is provided on the support film 211.
  • the light emitting device layer 212 includes various structures (not shown) such as a thin film transistor, a gate line, a data line, a capacitor, an anode, a cathode, an organic light emitting layer, and a color filter film.
  • the light emitting component is disposed in the display area 216 of the display layer 210.
  • the light emitting device layer 212 may be an OLED.
  • the display layer 210 may include a shielding layer 213, which is disposed on the light emitting device layer 212 and is used to shield the impurities such as air from oxidizing or contaminating the light emitting device layer 212. Further, the display layer 210 may further include a polarizer 214 disposed on the shielding layer 213 for increasing the light transmission of the display layer 210 and reducing external light reflection. A third adhesive layer 273 is provided between the polarizer 214 and the touch layer 260.
  • a display device is further provided.
  • the display device includes the flexible display screen of any one of the foregoing embodiments.
  • the display device may further include a frame for supporting the flexible display panel and a protective cover (not shown) for protecting the flexible display screen, and the frame is sleeved on the edge of the flexible display panel.
  • the frame may be flexible Yes, but the rigidity of the frame is higher than that of the flexible display panel.
  • the protective cover is attached to the display surface of the flexible display panel.
  • the display device may be a mobile phone, a tablet computer, or the like.
  • the above display device is equipped with the aforementioned flexible display screen 100.
  • the flexible display screen 100 is provided with a rigid layer 130 and a buffer layer 140 between the display layer 110 and the flexible cover layer 120.
  • the rigid layer can increase the hardness of the flexible cover layer.
  • the rigid layer 130 can transmit the external force along the screen body, dispersing the stress concentration, and avoiding the display layer 110 from being damaged by the vertical transmission of the external force.
  • the buffer layer 140 can absorb impact stress and buffer and protect the display layer 110.
  • the projection of the buffer layer 140 on the flexible cover layer 120 is located on a surface edge of the flexible cover layer 120 near the display layer 110. While buffering and protecting the display layer 110, the buffer layer 140 is prevented from affecting the light output of the display layer 110.
  • the rigid layer 130 and the buffer layer 140 improve the impact resistance of the flexible display screen 100, thereby increasing the service life of the display device.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract

一种显示装置及其柔性显示屏（100,200）。柔性显示屏（100,200）包括显示层（110,210）；柔性盖板层（120,220），设置于显示层（110,210）的出光面（215）上；刚性层（130,240），可透光且设置于显示层（110,210）与柔性盖板层（120,220）之间；以及缓冲层（140,230），设置于显示层（110,210）与柔性盖板层（120,220）之间，并且缓冲层（140,230）在柔性盖板层（120,220）上的投影位于柔性盖板层（120,220）的边缘。

Description

柔性显示屏及显示装置
相关申请的交叉引用
本申请要求于2018年8月16日提交中国专利局，申请号为201821325152.9，申请名称为“显示装置及其柔性显示屏”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及柔性显示领域，特别是涉及一种柔性显示屏及使用该柔性显示屏的显示装置。
背景技术
随着柔性显示技术的发展，柔性显示屏已成为未来显示终端的发展趋势。柔性显示屏为了实现其可弯折性，通常采用柔性盖板来保护显示元件。在进行落球测试(直径20mm的钢球，跌落高度2cm-62.2cm)时，发现柔性显示屏被小球击中位置会出现黑斑、亮斑或彩斑等显示不良现象。即柔性显示屏被落球击中位置产生封装失效、像素阴极失效、像素阳级失效等显示部件损坏问题。
发明内容
根据各种实施例，提供一种柔性显示屏及使用该柔性显示屏的显示装置。
一种柔性显示屏，包括：具有出光面的显示层；柔性盖板层，设置于所述显示层出光面上；刚性层，所述刚性层可透光并且设置于所述显示层与所述柔性盖板层之间；以及缓冲层，设置于所述显示层与所述柔性盖板层之间，并且所述缓冲层在所述柔性盖板层上的投影位于所述柔性盖板层的边缘。
在其中一个实施例中，所述刚性层覆盖所述显示层。
在其中一个实施例中，所述缓冲层设置于所述刚性层与所述柔性盖板层 之间。
在其中一个实施例中，所述柔性盖板层与刚性层之间设置有第一胶层，所述刚性层与显示层之间设置有第二胶层，所述第一胶层具有凸出部，所述凸出部与所述柔性盖板抵接，所述缓冲层设置在所述凸出部***。
在其中一个实施例中，所述缓冲层设置于所述刚性层与所述显示层之间。
在其中一个实施例中，所述柔性盖板层与刚性层之间设置有第一胶层，所述刚性层与显示层之间设置有第二胶层，所述第二胶层具有凸出部，所述凸出部与所述刚性层抵接，所述缓冲层设置在所述凸出部***。
在其中一个实施例中，所述刚性层的厚度为50μm～70μm。
在其中一个实施例中，所述柔性显示屏还包括遮光层，所述遮光层附着于所述柔性盖板层的靠近所述显示层的表面的边缘，所述缓冲层附着于所述遮光层上。
在其中一个实施例中，所述柔性显示屏还包括触控层，所述触控层设置在所述显示层与所述刚性层之间。
在其中一个实施例中，所述缓冲层由不透光的材料制成。
在其中一个实施例中，所述缓冲层的材质为弹性材料。
在其中一个实施例中，所述缓冲层的材质包括泡棉或硅胶中至少一种。
在其中一个实施例中，所述缓冲层具有蜂窝状结构。
在其中一个实施例中，所述缓冲层具有拱形结构。
在其中一个实施例中，所述显示层包括支撑膜和设置在所述支撑膜上的发光器件层。
在其中一个实施例中，所述显示层包括屏蔽层，设置在所述发光器件层上，用于屏蔽对所述发光器件层的氧化或污染。
在其中一个实施例中，所述显示层包括偏光片，设置在所述屏蔽层上，所述偏光片与所述触控层之间具有第三胶层。
还提供了一种显示装置，包括前述的柔性显示屏。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请 的其它特征、目的和优点将根据说明书、附图以及权利要求书的描述变得明显。
附图说明
图1为一实施例的柔性显示屏的剖视图。
图2为另一实施例的柔性显示屏的剖视图。
图3为再一实施例的柔性显示屏的剖视图。
具体实施方式
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图对本申请的具体实施方式做详细的说明。
请参见图1，一实施例的柔性显示屏100包括显示层110以及与显示层110层叠的柔性盖板层120。显示层110用于显示图像，显示层110可以包括诸如薄膜晶体管、栅线、数据线、电容、阳极、阴极、有机发光层、彩色滤光膜、触控层等不同的显示部件(未图示)。柔性盖板层120设置于显示层110的出光面上，用以保护显示层110的显示部件。
为了实现柔性显示屏100的柔软特性，采用柔性盖板120保护显示层110上的显示部件。然而柔性盖板120的抗冲击能力较弱，在进行落球测试实验时，柔性显示屏被小球击中位置会出现黑斑、亮斑或彩斑等显示不良现象。这是由于柔性盖板120被重物击中瞬间，应力集中无法被分散，导致冲击力直接传递到显示层110，致显示层110中的显示部件受损。
为了提高柔性显示屏100的抗冲击能力，柔性显示屏100还包括可透光的刚性层130以及缓冲层140。具体地，刚性层130与缓冲层140设置在柔性盖板层120以及显示层110之间，并且刚性层130与缓冲层140为层叠设置。进一步地，为了不影响柔性显示屏100的出光，缓冲层140在柔性盖板层120上的投影位于柔性盖板层120的边缘，即缓冲层140设置于柔性显示屏100的边框位置。一般地，柔性盖板层120的下表面边缘会做遮光处理， 以增强柔性显示屏100的显示效果，将缓冲层140设置在该遮光位置处，即实现了对显示层110的缓冲保护，又不影响柔性显示屏100的出光效果。缓冲层140具有缓冲结构，能吸收冲击力。而刚性层130具有一定刚性，其刚性比柔性盖板强，从而能将柔性盖板层120受到的冲击力沿屏体横向分散，避免应力集中。
上述柔性显示屏110包括层叠的显示层110、刚性层130、缓冲层140以及柔性盖板层120，刚性层130与缓冲层140设置于显示层110与柔性盖板层120之间。刚性层130能增强柔性盖板层120的硬度，在柔性盖板层120受到外力冲击时，刚性层130能将外力冲击沿屏体横向传递，分散了应力集中，避免了外力冲击竖直传递造成的显示层110损坏。缓冲层140能吸收冲击应力，进一步提高了柔性显示屏100的抗冲击能力。同时，缓冲层140在柔性盖板层120上的投影位于柔性盖板层120的边缘，从而在缓冲层140对显示层进行缓冲保护的同时避免缓冲层140影响显示层的出光。
进一步地，在本实施例中，对于刚性层130与缓冲层140的上下的位置关系不做限定。具体地，参见图1，在一实施例中，缓冲层140可设置于柔性盖板层120与刚性层130之间。即缓冲层140设置在刚性层130的靠近柔性盖板层120的表面上。从而在柔性盖板层120受到冲击力时，冲击应力先经过缓冲层140的吸收减弱然后才传递到刚性层130进行分散，降低了显示层110所受到的冲击应力。
请参见图2，在另一实施例中，缓冲层140也可以设置在显示层110与刚性层130之间，即缓冲层140设置在刚性层130的靠近显示层110的表面上。在柔性盖板层110受到重物撞击或外力冲击时，冲击应力会先经过刚性层130的横向传递均匀的分散到整个缓冲层140表面，避免了应力集中，然后再经过缓冲层的吸收减弱冲击应力。大大减少了显示层110受到的应力冲击。提高了柔性显示屏100的抗冲击能力。
具体地，在一实施例中，刚性层130覆盖显示层110，从而刚性层130能对整个显示层110进行保护。无论显示层110表面上那个位置受到冲击， 刚性层130均能提前将冲击应力分散至显示层110整个表面，避免了冲击应力集中在某个位置，造成该位置处的显示器件损坏。
进一步地，刚性层110为有一定刚度的透光材料，比如超薄玻璃等。进一步地，为了保证柔性显示屏100的可弯折性以及使用手感，刚性层130的厚度需要尽量地薄，但考虑到制作工艺难度以及成本问题，刚性层130又不宜太过于薄。在其中一个实施例中，刚性层130的厚度为50μm到70μm，对于超薄玻璃来说，50μm的厚度是目前业界工艺能达到的比较薄的厚度；同时为了保证柔性显示屏100可弯折性以及整体厚度，刚性层130的厚度需要保证在70μm以下。
具体地，在其中一实施例中，缓冲层130为弹性缓冲层，例如泡棉或硅胶等。或者，缓冲层130具有一些缓冲结构，例如，缓冲层130具有蜂窝状结构或具有多个拱形结构等，在受到外力冲击时，蜂窝状结构或拱形结构能吸收、分散冲击应力，从而能起到缓冲效果。
参见图3，在另一实施例中，柔性显示屏200包括层叠的显示层210、刚性层240、缓冲层230以及柔性盖板层220，其中，显示层210具有用于显示图像的出光面215，柔性盖板层220设置在显示层210的出光面215一侧。刚性层240与缓冲层230设置在显示层210与刚性层240之间。
进一步地，柔性盖板220具有能透光的透光区201以及不透光的遮光区202，刚性层240为透光刚性材料，如超薄玻璃。刚性层240覆盖在显示层的出光面215上。在其中一个实施例中，缓冲层230为不透光材料，如泡棉。缓冲层230设置在柔性盖板220的靠近显示层210的表面边缘，使得柔性盖板220的边缘形成不透光的遮光区202。从而在对柔性盖板220进行缓冲保护的同时起到遮光效果，遮挡显示层210的边框位置的非显示区，从而美化柔性显示屏200，进而提高柔性显示屏的显示效果。需要说明的是，缓冲层230也可以为透光的缓冲胶体，如硅胶，此时，柔性盖板220的遮光区202可通过其他方式实现。
具体地，在其中一个实施例中，柔性显示屏200还包括遮光层250，遮 光层250附着于柔性盖板层220的靠近显示层210的表面的边缘，从而以对柔性显示屏体200的边缘进行遮光，形成遮光区202，以提高显示效果。进一步地，缓冲层230可设置在遮光层250的表面，此时缓冲层230可为透光缓冲材料，以实现对显示层210进行缓冲保护。缓冲层230也可为不透光缓冲材料，在对显示层210进行缓冲保护的同时，与遮光层250一起对柔性显示屏200起到双重遮光作用。进一步地，遮光层的材料为油墨。
进一步地，在一实施例中柔性显示屏200还包括触控层260，触控层260设置于显示层210与刚性层240之间，触控层260上设置有触控电路(未示出)，用于感应用户对柔性显示屏200的触摸操作。进一步地，触控屏260包括可视区261及位于可视区261***的非可视区262，触控电路设置在可视区261内。可示区261与柔性显示屏200的透光区201对应，而非可视区262与柔性显示屏200的非透光区202对应。从而非可视区262能被遮光区202隐藏，减少可视区261边缘透光造成的色差效果，美化了柔性显示屏200。
具体地，请继续参见图3，在一实施例中，柔性显示屏200还包括第一胶层271以及第二胶层272，进一步地，第一胶层271设置于柔性盖板层120与刚性层240之间，第二胶层272设置于刚性层240与显示层210之间。第一胶层271以及第二胶层272作为粘合剂，用于粘贴柔性盖板层220与刚性层240，以及粘贴刚性层240与显示层210。进一步地，第一胶层271与第二胶层272均为光学胶，光学胶具有无色透明、光透过率在90％以上、胶结强度良好，可在室温或中温下固化，且有固化收缩小等特点。
可选地，在其中一个实施例中，第一胶层271的中部具有向外凸出的凸起部2711，凸起部2711与柔性盖板层220抵接，而缓冲层230设置在凸起部2711的***。凸起部2711用于对柔性盖板220进行支撑，避免柔性盖板220的中部发生下沉等现象。并且缓冲层230设置在凸出部2711***，从而凸出部2711对缓冲层230起到粘贴固定作用。
可选地，在另一个实施例中，第二胶层272的中部具有向外凸出的凸起部，并且凸起部与刚性层240抵接，此时，缓冲层230设置在第二胶层272 的凸起部的***。
进一步地，显示层210具有显示图像的显示区216以及位于显示区216***的非显示区217，显示区216上分布有发光元件(未图示)、像素阵列(未图示)等用于显示图像的部件。非显示区217排布有用于实现信号传输、驱动发光元器件发光等功能的集成电路(未图示)。显示区216与透光区201对应，从而使显示区216上显示的图像穿过透光区201使用户可视。非显示区217与遮光区202对应，从而使遮光区202隐藏非显示区217，美化柔性显示屏200。
进一步地，显示层210包括用于支撑柔性显示屏200的支撑膜211。支撑膜211上设置有发光器件层212。发光器件层212包括薄膜晶体管、栅线、数据线、电容、阳极、阴极、有机发光层、彩色滤光膜等多种结构(未图示)。进一步地，发光元器件设置于显示层210的显示区216内。进一步地，发光器件层212可以为OLED。显示层210可以包括有屏蔽层213，设置在发光器件层212上，用于屏蔽空气等杂质对发光器件层212的氧化或污染。进一步地，显示层210还可以包括偏光片214，设置在屏蔽层213上，用于增加显示层210的透光，以及减少外光反射。偏光片214与触控层260之间具有第三胶层273。
在本申请的一实施例中，还提供一种显示装置，该显示装置包括前述任一实施例的柔性显示屏。进一步地，显示装置还可以包括用以支撑柔性显示面板的框架以及用以保护柔性显示屏的保护盖板(未图示)，框架套设在柔性显示面板的边缘，进一步地，框架可以为柔性的，但框架的刚度比柔性显示面板的刚度高。保护盖板附着于柔性显示面板的显示面上。进一步地，显示装置可以为手机、平板电脑等。
上述显示装置安装了前述的柔性显示屏100，柔性显示屏100通过在显示层110与柔性盖板层120之间设置刚性层130以及缓冲层140。刚性层能增强柔性盖板层硬度，在柔性盖板层120受到外力冲击时，刚性层130能将外力沿屏体横向传递，分散了应力集中，避免了外力竖直传递造成的显示层 110损坏。缓冲层140能吸收冲击应力，对显示层110进行缓冲保护。并且缓冲层140在柔性盖板层120上的投影位于柔性盖板层120的靠近显示层110的表面边缘，在对显示层110进行缓冲保护的同时避免缓冲层140影响显示层110的出光。刚性层130以及缓冲层140提高了柔性显示屏100的抗冲击能力，进而提高了显示装置的使用寿命。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (18)

  1. 一种柔性显示屏，包括：
    具有出光面的显示层；
    柔性盖板层，设置于所述显示层的出光面上；
    刚性层，所述刚性层可透光并且设置于所述显示层与所述柔性盖板层之间；以及
    缓冲层，设置于所述显示层与所述柔性盖板层之间，并且所述缓冲层在所述柔性盖板层上的投影位于所述柔性盖板层的边缘。
  2. 根据权利要求1所述的柔性显示屏，其中，所述刚性层覆盖所述显示层。
  3. 根据权利要求2所述的柔性显示屏，其中，所述缓冲层设置于所述刚性层与所述柔性盖板层之间。
  4. 根据权利要求3所述的柔性显示屏，其中，所述柔性盖板层与刚性层之间设置有第一胶层，所述刚性层与显示层之间设置有第二胶层，所述第一胶层具有凸出部，所述凸出部与所述柔性盖板抵接，所述缓冲层设置在所述凸出部***。
  5. 根据权利要求2所述的柔性显示屏，其中，所述缓冲层设置于所述刚性层与所述显示层之间。
  6. 根据权利要求5所述的柔性显示屏，其中，所述柔性盖板层与刚性层之间设置有第一胶层，所述刚性层与显示层之间设置有第二胶层，所述第二胶层具有凸出部，所述凸出部与所述刚性层抵接，所述缓冲层设置在所述凸出部***。
  7. 根据权利要求1所述的柔性显示屏，其中，所述刚性层的厚度为50μm～70μm。
  8. 根据权利要求1所述的柔性显示屏，其中，所述柔性显示屏还包括遮光层，所述遮光层附着于所述柔性盖板层的靠近所述显示层的表面的边缘，所述缓冲层附着于所述遮光层上。
  9. 根据权利要求1所述的柔性显示屏，其中，所述柔性显示屏还包括触控层，所述触控层设置在所述显示层与所述刚性层之间。
  10. 根据权利要求1所述的柔性显示屏，其中，所述缓冲层由不透光的材料制成。
  11. 根据权利要求1所述的柔性显示屏，其中，所述缓冲层的材质为弹性材料。
  12. 根据权利要求11所述的柔性显示屏，其中，所述缓冲层的材质包括泡棉或硅胶中至少一种。
  13. 根据权利要求1所述的柔性显示屏，其中，所述缓冲层具有蜂窝状结构。
  14. 根据权利要求1所述的柔性显示屏，其中，所述缓冲层具有拱形结构。
  15. 根据权利要求1所述的柔性显示屏，其中，所述显示层包括支撑膜和设置在所述支撑膜上的发光器件层。
  16. 根据权利要求15所述的柔性显示屏，其中，所述显示层包括屏蔽层，设置在所述发光器件层上，用于屏蔽对所述发光器件层的氧化或污染。
  17. 根据权利要求16所述的柔性显示屏，其中，所述显示层包括偏光片，设置在所述屏蔽层上，所述偏光片与所述触控层之间具有第三胶层。
  18. 一种显示装置，包括如权利要求1所述的柔性显示屏。
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