WO2019205385A1 - 一种柔性oled显示面板 - Google Patents

一种柔性oled显示面板 Download PDF

Info

Publication number
WO2019205385A1
WO2019205385A1 PCT/CN2018/102273 CN2018102273W WO2019205385A1 WO 2019205385 A1 WO2019205385 A1 WO 2019205385A1 CN 2018102273 W CN2018102273 W CN 2018102273W WO 2019205385 A1 WO2019205385 A1 WO 2019205385A1
Authority
WO
WIPO (PCT)
Prior art keywords
display panel
oled display
heat
flexible
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/102273
Other languages
English (en)
French (fr)
Inventor
秦学思
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/306,590 priority Critical patent/US11094913B1/en
Publication of WO2019205385A1 publication Critical patent/WO2019205385A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • 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
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/87—Arrangements for heating or cooling
    • 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
    • H10K59/8794—Arrangements for heating and cooling
    • 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
    • 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
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • 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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a flexible OLED display panel.
  • OLED displays are gaining attention and are widely recognized as the next generation of mainstream displays.
  • OLED panels still have obvious defects, such as a much shorter lifetime than LCD displays, which seriously affects the application of OLED panels.
  • OLED display is a key parameter for evaluating the performance of the display. It has been hoped to increase its luminous efficiency in production, but with the improvement of luminous efficiency and the current lack of improvement of OLED electric power, OLED panel displays More heat is generated, which is a challenge for the life of OLED panels.
  • FIG. 1 is a schematic diagram of an OLED panel illumination. Since electrons and holes in the OLED light-emitting layer 102 are combined to generate excitons, when the excitons return to a steady state, photons are released, and heat is released. Therefore, the OLED device needs to generate heat while emitting light, and is released through other layers, wherein the heat is released as indicated by the arrow in the figure.
  • the light-emitting layer 102 generally adopts the structure of the thin film encapsulation layer 103, and the organic layer has a certain heat insulation effect, and the TFT substrate 101 of the lower layer of the light-emitting layer 102 also generates heat, thereby causing heat dissipation. Very smooth.
  • some OLED panel edges are provided with a sealant, but the sealant affects the heat dissipation of the OLED panel on the edge side to a certain extent, thereby causing a decrease in the life of the OLED panel.
  • the invention provides a flexible OLED display panel, which can improve the heat dissipation performance of the OLED panel, thereby increasing the service life of the OLED panel.
  • the invention provides a flexible OLED display panel, comprising:
  • a polarizer disposed on the thin film encapsulation layer
  • the sealed heat-dissipating glue contains heat-absorbing particles, and the heat-absorbing particles are used for absorbing heat generated by the OLED display panel, and the sealed heat-dissipating glue comprises a plurality of sides from the side to the outer side of the OLED display panel. a layer of sealing heat dissipating glue layer, wherein the endothermic particles have different concentrations in each of the sealing fin layers, and the heat absorbing particles are heat-dissipated to the outside of the side of the OLED display panel. The number in the glue layer gradually increases.
  • the endothermic particulate matter comprises silicone grease particles.
  • the sealing heat sink covers the flexible substrate, the organic light-emitting layer, the thin film encapsulation layer, and sides of the polarizer.
  • the sealing heat sink extends at least to an edge region of the back surface of the flexible substrate.
  • the sealing heat sink extends at least to an edge region of the surface of the polarizer for bonding to the glass cover.
  • the flexible substrate includes a display area and a non-display area, and a flexible circuit board is disposed on an edge of the flexible substrate corresponding to the non-display area, and the sealing heat dissipation rubber is along the flexible A side of the substrate extends to the surface of the flexible circuit board to prevent moisture from entering the bonded area of the flexible circuit board.
  • the glass cover covers the sealing heat dissipating rubber at the edge of the display area.
  • the sealing heat-dissipating gel comprises a UV glue and the silicone grease particles distributed in the UV glue, wherein the silicone grease particles in the sealing heat-dissipating rubber layer are preset The concentration is evenly distributed.
  • the material of the UV glue comprises one or more of polyacrylates, polyvinyl alcohols, and vinyl acetate copolymers.
  • the invention also provides a flexible OLED display panel comprising:
  • a polarizer disposed on the thin film encapsulation layer
  • the sealed heat-dissipating glue contains heat-absorbing particles, and the heat-absorbing particles are used for absorbing heat generated by the OLED display panel, and the sealed heat-dissipating glue comprises a plurality of sides from the side to the outer side of the OLED display panel.
  • the layer distributes the sealing heat dissipating layer, and the concentration of the endothermic particles in each of the sealing fin layers is different.
  • the endothermic particulate matter comprises silicone grease particles.
  • the sealing heat sink covers the flexible substrate, the organic light-emitting layer, the thin film encapsulation layer, and sides of the polarizer.
  • the sealing heat sink extends at least to an edge region of the back surface of the flexible substrate.
  • the sealing heat sink extends at least to an edge region of the surface of the polarizer for bonding to the glass cover.
  • the flexible substrate includes a display area and a non-display area, and a flexible circuit board is disposed on an edge of the flexible substrate corresponding to the non-display area, and the sealing heat dissipation rubber is along the flexible A side of the substrate extends to the surface of the flexible circuit board to prevent moisture from entering the bonded area of the flexible circuit board.
  • the glass cover covers the sealing heat dissipating rubber at the edge of the display area.
  • the sealing heat-dissipating gel comprises a UV glue and the silicone grease particles distributed in the UV glue, wherein the silicone grease particles in the sealing heat-dissipating rubber layer are preset The concentration is evenly distributed.
  • the material of the UV glue comprises one or more of polyacrylates, polyvinyl alcohols, and vinyl acetate copolymers.
  • the flexible OLED display panel of the present invention improves the life of the OLED display panel by adding a layer of sealing UV glue on the periphery of the OLED display panel to prevent the intrusion of moisture onto the OLED display panel.
  • the present invention adopts a method of improving the UV colloid, and adopts a multi-layer gluing process, the UV colloid contains a plurality of different kinds of silicone grease particles with excellent thermal conductivity, and the sealant is sealed from the inside to the outside. The number of thermally conductive particles is gradually increased to facilitate the diffusion of heat.
  • the sealant comprises a base layer insulating epoxy resin and a silicone grease sealant layer to form a heat dissipation layer under the premise of sealing. Therefore, the OLED display panel has a good heat absorption and heat dissipation effect, thereby increasing the service life of the OLED display panel.
  • 1 is a schematic diagram of illumination of a conventional OLED panel
  • FIG. 2 is a schematic structural diagram of a flexible OLED display panel according to an embodiment of the present invention.
  • FIG. 3 is a top view of a flexible OLED display panel according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a sealing heat dissipation adhesive film layer of a flexible OLED display panel according to an embodiment of the present invention.
  • the present invention can solve the technical problem that the heat dissipation effect of the flexible OLED panel of the prior art is poor, thereby causing the life of the OLED panel to be reduced.
  • the flexible OLED display panel includes: a flexible substrate 201 on which a thin film transistor layer is formed; an organic light-emitting layer 202 is prepared on the flexible substrate 201; and a thin film encapsulation layer 203 is prepared on the organic light-emitting layer
  • the polarizer 204 is disposed on the thin film encapsulation layer 203; the glass cover 205 is disposed on the polarizer 204; and the sealing heat dissipating adhesive 206 is disposed on the side of the OLED display panel to isolate the air. Water vapor enters the OLED display panel; the flexible substrate 201 includes a display area 208 and a non-display area around the display area 208, and a flexible position on the flexible substrate 201 corresponding to the non-display area Circuit board 207.
  • the sealing heat sink 206 covers the flexible substrate 201, the organic light-emitting layer 202, the thin film encapsulation layer 203, and side portions of the polarizer 204.
  • the sealing heat-dissipating adhesive 206 extends along at least a side of the OLED display panel to an edge region of the back surface of the flexible substrate 201.
  • the sealing heat-dissipating adhesive 206 extends along at least a side of the OLED display panel to an edge region of the surface of the polarizer 204 for bonding with the glass cover 205. In this way, water vapor is prevented from entering the OLED display panel due to breakage or poor adhesion at the edge of the sealing heat-dissipating gel 206.
  • the corresponding sealing heat sink 206 extends along the side of the flexible substrate 201 to the surface of the flexible circuit board 207.
  • the flexible circuit board 207 is sealed with the corresponding region of the flexible substrate 201 to prevent moisture from entering the bonding area of the flexible circuit board 207.
  • the glass cover plate 205 covers the sealing heat-dissipating glue 206 at the edge of the display area, thereby protecting the sealing heat-dissipating glue 206 from external damage.
  • the sealing heat-dissipating glue 206 contains heat absorbing particles for absorbing heat generated by the OLED display panel, and the organic light-emitting layer 202 generates heat while generating light, and the flexibility
  • the device in the substrate 201 also generates heat under the working condition, so that most of the heat passes through the multi-layer film structure to dissipate heat, and the sealing heat-dissipating paste 206 of the present invention is disposed on the side of the OLED display panel.
  • the heat absorbing particles include silicone grease particles, which have a good heat dissipation effect, and are not limited thereto, and may be other commonly used heat absorbing materials, which are not limited herein.
  • the top view of the OLED display panel is as shown in FIG. 3 .
  • the display panel 301 includes a display area 302 and a non-display area 303.
  • the display panel 301 is provided with an OLB (Outer Lead) at a preset position corresponding to the non-display area 303.
  • Bonding region 304 is provided at the edge of the display panel 301 with a sealing heat dissipating adhesive 305 adhered to the side surface of the display panel 301.
  • the sealing heat dissipating adhesive 305 can prevent the outside water vapor from entering the inside of the display panel 301, and can also absorb the heat generated by the display panel 301, and has a good heat absorption and heat dissipation effect on the display panel 301.
  • FIG. 4 is a schematic diagram of a sealing heat dissipation adhesive film layer of a flexible OLED display panel according to an embodiment of the present invention.
  • the sealing heat dissipating adhesive 40 is attached to the peripheral side of the OLED display panel 41.
  • the sealing heat dissipating adhesive 40 includes a sealing heat dissipating adhesive layer distributed in a plurality of layers from one side to the outer side of the OLED display panel 41, as shown in the figure. It is four layers, but is not limited thereto, and may include four or more layers. Here, only four layers are taken as an example for description.
  • the sealing heat-dissipating adhesive 40 sequentially includes a first sealing heat-dissipating adhesive layer 401, a second sealing heat-dissipating adhesive layer 402, a third sealing heat-dissipating adhesive layer 403, and a fourth sealing heat-dissipating adhesive layer from the side closer to the OLED display panel 41.
  • each of the sealed heat-dissipating adhesive layers contains a predetermined concentration of uniformly distributed silicone grease particles 405, and the silicone grease particles 405 have different concentrations in each of the sealed heat-dissipating adhesive layers.
  • the number is gradually increasing. Because the concentration of the silicone grease particles 405 of the outer layer is higher, the heat dissipation and heat dissipation effect is better, so that the heat flows continuously from the inner side of the OLED display panel 41 to the outside, and the heat dissipation of the OLED display panel 41 is performed. effect.
  • the body of the sealing heat-dissipating glue 40 comprises UV glue, and the silicone grease particles 405 are distributed in the UV glue.
  • the material of the UV glue includes one or more of polyacrylates, polyvinyl alcohols, and vinyl acetate copolymers.
  • the UV glue can also be other materials.
  • the sealing heat-dissipating glue 40 internally contains the UV-absorbing glue and the silicone grease particles 405 having different concentration distributions, the silicone grease particles 405 have a good heat-dissipating effect, and the two can be combined. It has the dual effect of heat dissipation and waterproof steam.
  • the flexible OLED display panel of the invention increases the lifetime of the OLED display panel by increasing the application of a layer of sealed UV glue on the periphery of the OLED display panel to improve the life of the OLED display panel, and the risk of heat dissipation is brought about by the OLED display panel.
  • the invention adopts an improved method for the UV colloid, adopting a multi-layer gluing process, the UV colloid contains a different amount of silicone grease particles having excellent thermal conductivity, and the number of heat conductive particles in the sealant from the inside to the outside is gradually increased, so that In the spread of heat.
  • the sealant comprises a base layer insulating epoxy resin and a silicone grease sealant layer to form a heat dissipation layer under the premise of sealing. Therefore, the OLED display panel has a good heat absorption and heat dissipation effect, thereby increasing the service life of the OLED display panel.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

提供一种柔性OLED显示面板，包括：柔性基板（201），以及依次制备于柔性基板上的有机致电发光层（202）、薄膜封装层（203）、偏光片（204）、玻璃盖板（205）以及密封散热胶（206），密封散热胶设置于OLED显示面板四周的侧面，以隔绝空气中的水汽进入OLED显示面板内；密封散热胶内含有吸热颗粒物，吸热颗粒物用于吸收OLED显示面板产生的热量。

Description

一种柔性OLED显示面板 技术领域
本发明涉及显示技术领域，尤其涉及一种柔性OLED显示面板。
 背景技术
柔性OLED显示器逐渐引起重视，并被普遍认为是下一代主流显示器。但是OLED面板现在还存在明显的缺陷，比如寿命较LCD显示器短很多，这严重影响了OLED面板的应用。OLED显示器作为一种新型显示器件，其发光效率作为评价显示器性能的关键参数，生产中一直希望增加其发光效率，但是随着发光效率的提升，以及现在OLED电功率提升不足等原因，OLED面板显示器的产热较多，这对OLED面板的寿命来说是个挑战。
图1为OLED面板发光原理图，由于OLED发光层102中电子与空穴结合，生成激子，当激子回到稳态，释放出光子，同时释放出热量。所以，OLED器件在发光的同时需要产热，并通过其他各层释放，其中，热量的释放如图中箭头所示。另外，对于柔性OLED面板，所述发光层102以上普遍采用薄膜封装层103结构，其有机层具有一定隔热效果，所述发光层102下层的TFT基板101本身也要产热，因此导致散热不是十分畅通。另外，一些OLED面板边缘设置有密封胶，但是该密封胶在一定程度上影响OLED面板在边缘侧的散热，从而导致OLED面板寿命的降低。
因此，有必要提供一种柔性OLED显示面板，以解决现有技术所存在的问题。
 技术问题
本发明提供一种柔性OLED显示面板，能够提高OLED面板的散热性能，从而增加OLED面板的使用寿命。
 技术解决方案
为解决上述问题，本发明提供的技术方案如下：
本发明提供一种柔性OLED显示面板，包括：
柔性基板；
有机致电发光层，制备于所述柔性基板上；
薄膜封装层，制备于所述有机致电发光层上；
偏光片，设置于所述薄膜封装层上；
玻璃盖板，设置于所述偏光片上；以及
密封散热胶，设置于OLED显示面板四周的侧面，以隔绝空气中的水汽进入所述OLED显示面板内；
其中，所述密封散热胶内含有吸热颗粒物，所述吸热颗粒物用于吸收所述OLED显示面板产生的热量，所述密封散热胶包括由靠近所述OLED显示面板的一侧至外侧呈多层分布的密封散热胶层，且所述吸热颗粒物在各所述密封散热胶层中的浓度不同，所述吸热颗粒物在靠近所述OLED显示面板的一侧向外侧的各所述密封散热胶层中的数目逐渐递增。
在本发明一实施例中，所述吸热颗粒物包括硅脂颗粒。
在本发明一实施例中，所述密封散热胶覆盖所述柔性基板、所述有机致电发光层、所述薄膜封装层以及所述偏光片的侧面。
在本发明一实施例中，所述密封散热胶至少延伸至所述柔性基板背部表面的边缘区域。
在本发明一实施例中，所述密封散热胶至少延伸至所述偏光片用于与所述玻璃盖板贴合的表面的边缘区域。
在本发明一实施例中，所述柔性基板包括显示区域与非显示区域，在所述柔性基板上对应所述非显示区域的边缘位置设置有柔性电路板，所述密封散热胶沿所述柔性基板侧面延伸至所述柔性电路板表面，以防止水汽进入至所述柔性电路板的邦定区域。
在本发明一实施例中，所述玻璃盖板覆盖所述显示区域边缘的所述密封散热胶。
在本发明一实施例中，所述密封散热胶包含UV胶与分布于所述UV胶中的所述硅脂颗粒，其中，一所述密封散热胶层中的所述硅脂颗粒以预设浓度均匀分布。
在本发明一实施例中，所述UV胶的材料包括聚丙烯酸酯类、聚乙烯醇类、醋酸乙烯共聚物类中的一者或一者以上。
本发明还提供一种柔性OLED显示面板，包括：
柔性基板；
有机致电发光层，制备于所述柔性基板上；
薄膜封装层，制备于所述有机致电发光层上；
偏光片，设置于所述薄膜封装层上；
玻璃盖板，设置于所述偏光片上；以及
密封散热胶，设置于OLED显示面板四周的侧面，以隔绝空气中的水汽进入所述OLED显示面板内；
其中，所述密封散热胶内含有吸热颗粒物，所述吸热颗粒物用于吸收所述OLED显示面板产生的热量，所述密封散热胶包括由靠近所述OLED显示面板的一侧至外侧呈多层分布的密封散热胶层，且所述吸热颗粒物在各所述密封散热胶层中的浓度不同。
在本发明一实施例中，所述吸热颗粒物包括硅脂颗粒。
在本发明一实施例中，所述密封散热胶覆盖所述柔性基板、所述有机致电发光层、所述薄膜封装层以及所述偏光片的侧面。
在本发明一实施例中，所述密封散热胶至少延伸至所述柔性基板背部表面的边缘区域。
在本发明一实施例中，所述密封散热胶至少延伸至所述偏光片用于与所述玻璃盖板贴合的表面的边缘区域。
在本发明一实施例中，所述柔性基板包括显示区域与非显示区域，在所述柔性基板上对应所述非显示区域的边缘位置设置有柔性电路板，所述密封散热胶沿所述柔性基板侧面延伸至所述柔性电路板表面，以防止水汽进入至所述柔性电路板的邦定区域。
在本发明一实施例中，所述玻璃盖板覆盖所述显示区域边缘的所述密封散热胶。
在本发明一实施例中，所述密封散热胶包含UV胶与分布于所述UV胶中的所述硅脂颗粒，其中，一所述密封散热胶层中的所述硅脂颗粒以预设浓度均匀分布。
在本发明一实施例中，所述UV胶的材料包括聚丙烯酸酯类、聚乙烯醇类、醋酸乙烯共聚物类中的一者或一者以上。
 有益效果
本发明的有益效果为：本发明的柔性OLED显示面板，通过在OLED显示面板四周边缘增加涂布一层密封UV胶，防止水汽对OLED显示面板的入侵，提高OLED显示面板的寿命，而对于其带来的散热不良风险，本发明采用对该UV胶体改进的方式，采用多层涂胶工艺，该UV胶体内部含有数量不同的导热性能优异的硅脂颗粒，且从内向外各层密封胶中导热颗粒数目逐渐增多，以便于热量的扩散。且该密封胶包括基层绝缘环氧树脂类、硅脂类密封胶层，保证密封前提下，形成散热层。从而对OLED显示面板起到很好的吸热散热效果，进而增加OLED显示面板的使用寿命。
 附图说明
为了更清楚地说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介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，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。
图1为现有的OLED面板发光原理图；
图2为本发明实施例提供的柔性OLED显示面板结构示意图；
图3为本发明实施例提供的柔性OLED显示面板俯视图；
图4为本发明实施例提供的柔性OLED显示面板的密封散热胶膜层示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
本发明针对现有技术的柔性OLED面板散热效果差，从而导致OLED面板寿命降低的技术问题，本实施例能够解决该缺陷。
参阅图2，为本发明实施例提供的柔性OLED显示面板结构示意图。柔性OLED显示面板包括：柔性基板201，所述柔性基板201上制备有薄膜晶体管层；有机致电发光层202，制备于所述柔性基板201上；薄膜封装层203，制备于所述有机致电发光层202上；偏光片204，设置于所述薄膜封装层203上；玻璃盖板205，设置于所述偏光片204上；以及密封散热胶206，设置于OLED显示面板四周的侧面，以隔绝空气中的水汽进入所述OLED显示面板内；所述柔性基板201包括显示区域208以及所述显示区域208外围的非显示区域，在所述柔性基板201上对应所述非显示区域的边缘位置设置有柔性电路板207。
所述密封散热胶206覆盖所述柔性基板201、所述有机致电发光层202、所述薄膜封装层203以及所述偏光片204的侧面部分。优选的，所述密封散热胶206沿所述OLED显示面板的侧面至少延伸至所述柔性基板201背部表面的边缘区域。优选的，所述密封散热胶206沿所述OLED显示面板的侧面至少延伸至所述偏光片204用于与所述玻璃盖板205贴合的表面的边缘区域。以此来防止所述密封散热胶206的边缘处由于破损或粘贴不良造成水汽进入所述OLED显示面板内。
在邦定（连结）有所述柔性电路板207一侧的所述柔性基板201的侧面上，相应的所述密封散热胶206沿所述柔性基板201侧面延伸至所述柔性电路板207表面，从而将所述柔性电路板207与所述柔性基板201进行邦定的相应区域进行密封，防止水汽进入至所述柔性电路板207的邦定区域。优选的，所述玻璃盖板205覆盖所述显示区域边缘的所述密封散热胶206，从而保护所述密封散热胶206不受外界破坏。
所述密封散热胶206内含有吸热颗粒物，所述吸热颗粒物用于吸收所述OLED显示面板产生的热量，由于所述有机致电发光层202在产生光的同时也产生热，以及所述柔性基板201内的器件在工作状态下也会产生热，导致大多数热量要穿过多层膜层结构才能进行散热，而本发明的所述密封散热胶206设置于所述OLED显示面板侧面，既可以当做密封胶来使用以隔绝外界水汽入侵，又可以当做散热胶来使用，以将所述OLED显示面板产生的热量由中间向两侧边缘吸收，从而辅助所述OLED显示面板散热，进而增加了所述OLED显示面板的使用寿命。其中，所述吸热颗粒物包括硅脂颗粒，具有很好的散热效果，当然并不限于此，还可以为其他常用吸热材料，此处不做限定。
所述OLED显示面板的俯视图如图3所示，显示面板301包括显示区域302与非显示区域303，在所述显示面板301对应所述非显示区域303的预设位置设置有OLB(Outer Lead Bonding)区域304，在所述显示面板301的边缘处设置有粘合于所述显示面板301的侧面上的密封散热胶305。所述密封散热胶305可以防止外界水汽进入所述显示面板301内部，同时也可以吸收所述显示面板301产生的热量，对所述显示面板301起到很好吸热散热效果。
如图4所示，为本发明实施例提供的柔性OLED显示面板的密封散热胶膜层示意图。密封散热胶40贴附于OLED显示面板41的四周侧面，所述密封散热胶40包括由靠近所述OLED显示面板41的一侧至外侧呈多层分布的密封散热胶层，图中所示仅为四层，但不限于此，可以包括四层以上，此处仅以四层为例进行说明。所述密封散热胶40由靠近所述OLED显示面板41一侧向外侧依次包第一密封散热胶层401、第二密封散热胶层402、第三密封散热胶层403以及第四密封散热胶层404，每一所述密封散热胶层中均含有预设浓度的均匀分布的硅脂颗粒405，且所述硅脂颗粒405在各所述密封散热胶层中的浓度不同。
优选的，所述第一密封散热胶层401、所述第二密封散热胶层402、所述第三密封散热胶层403以及所述第四密封散热胶层404中的所述硅脂颗粒405的数目逐渐递增。因为外层的所述硅脂颗粒405浓度较高，吸热散热效果较好，所以热量不停的由所述OLED显示面板41内侧流向外侧，起到对所述OLED显示面板41的吸热散热效果。
优选的，所述密封散热胶40的主体包含UV胶，所述硅脂颗粒405分布于所述UV胶中的。所述UV胶的材料包括聚丙烯酸酯类、聚乙烯醇类、醋酸乙烯共聚物类中的一者或一者以上。所述UV胶还可以为其他材料。
由于所述密封散热胶40内部含有吸水性强的所述UV胶以及呈不同浓度分布的所述硅脂颗粒405，所述硅脂颗粒405具有很好的散热效果，将两者结合在一起可以起到散热、防水汽双重效果。
本发明的柔性OLED显示面板，通过在OLED显示面板四周边缘增加涂布一层密封UV胶，防止水汽对OLED显示面板的入侵，提高OLED显示面板的寿命，而对于其带来的散热不良风险，本发明采用对该UV胶体改进的方式，采用多层涂胶工艺，该UV胶体内部含有数量不同的导热性能优异的硅脂颗粒，且从内向外各层密封胶中导热颗粒数目逐渐增多，以便于热量的扩散。且该密封胶包括基层绝缘环氧树脂类、硅脂类密封胶层，保证密封前提下，形成散热层。从而对OLED显示面板起到很好的吸热散热效果，进而增加OLED显示面板的使用寿命。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (18)

  1. 一种柔性OLED显示面板，其包括：
    柔性基板；
    有机致电发光层，制备于所述柔性基板上；
    薄膜封装层，制备于所述有机致电发光层上；
    偏光片，设置于所述薄膜封装层上；
    玻璃盖板，设置于所述偏光片上；以及
    密封散热胶，设置于OLED显示面板四周的侧面，以隔绝空气中的水汽进入所述OLED显示面板内；
    其中，所述密封散热胶内含有吸热颗粒物，所述吸热颗粒物用于吸收所述OLED显示面板产生的热量，所述密封散热胶包括由靠近所述OLED显示面板的一侧至外侧呈多层分布的密封散热胶层，且所述吸热颗粒物在各所述密封散热胶层中的浓度不同，所述吸热颗粒物在靠近所述OLED显示面板的一侧向外侧的各所述密封散热胶层中的数目逐渐递增。
  2. 根据权利要求1所述的柔性OLED显示面板，其中，所述吸热颗粒物包括硅脂颗粒。
  3. 根据权利要求1所述的柔性OLED显示面板，其中，所述密封散热胶覆盖所述柔性基板、所述有机致电发光层、所述薄膜封装层以及所述偏光片的侧面。
  4. 根据权利要求1所述的柔性OLED显示面板，其中，所述密封散热胶至少延伸至所述柔性基板背部表面的边缘区域。
  5. 根据权利要求1所述的柔性OLED显示面板，其中，所述密封散热胶至少延伸至所述偏光片用于与所述玻璃盖板贴合的表面的边缘区域。
  6. 根据权利要求1所述的柔性OLED显示面板，其中，所述柔性基板包括显示区域与非显示区域，在所述柔性基板上对应所述非显示区域的边缘位置设置有柔性电路板，所述密封散热胶沿所述柔性基板侧面延伸至所述柔性电路板表面，以防止水汽进入至所述柔性电路板的邦定区域。
  7. 根据权利要求6所述的柔性OLED显示面板，其中，所述玻璃盖板覆盖所述显示区域边缘的所述密封散热胶。
  8. 根据权利要求2所述的柔性OLED显示面板，其中，所述密封散热胶包含UV胶与分布于所述UV胶中的所述硅脂颗粒，其中，一所述密封散热胶层中的所述硅脂颗粒以预设浓度均匀分布。
  9. 根据权利要求8所述的柔性OLED显示面板，其中，所述UV胶的材料包括聚丙烯酸酯类、聚乙烯醇类、醋酸乙烯共聚物类中的一者或一者以上。
  10. 一种柔性OLED显示面板，其包括：
    柔性基板；
    有机致电发光层，制备于所述柔性基板上；
    薄膜封装层，制备于所述有机致电发光层上；
    偏光片，设置于所述薄膜封装层上；
    玻璃盖板，设置于所述偏光片上；以及
    密封散热胶，设置于OLED显示面板四周的侧面，以隔绝空气中的水汽进入所述OLED显示面板内；
    其中，所述密封散热胶内含有吸热颗粒物，所述吸热颗粒物用于吸收所述OLED显示面板产生的热量，所述密封散热胶包括由靠近所述OLED显示面板的一侧至外侧呈多层分布的密封散热胶层，且所述吸热颗粒物在各所述密封散热胶层中的浓度不同。
  11. 根据权利要求10所述的柔性OLED显示面板，其中，所述吸热颗粒物包括硅脂颗粒。
  12. 根据权利要求10所述的柔性OLED显示面板，其中，所述密封散热胶覆盖所述柔性基板、所述有机致电发光层、所述薄膜封装层以及所述偏光片的侧面。
  13. 根据权利要求10所述的柔性OLED显示面板，其中，所述密封散热胶至少延伸至所述柔性基板背部表面的边缘区域。
  14. 根据权利要求10所述的柔性OLED显示面板，其中，所述密封散热胶至少延伸至所述偏光片用于与所述玻璃盖板贴合的表面的边缘区域。
  15. 根据权利要求10所述的柔性OLED显示面板，其中，所述柔性基板包括显示区域与非显示区域，在所述柔性基板上对应所述非显示区域的边缘位置设置有柔性电路板，所述密封散热胶沿所述柔性基板侧面延伸至所述柔性电路板表面，以防止水汽进入至所述柔性电路板的邦定区域。
  16. 根据权利要求15所述的柔性OLED显示面板，其中，所述玻璃盖板覆盖所述显示区域边缘的所述密封散热胶。
  17. 根据权利要求11所述的柔性OLED显示面板，其中，所述密封散热胶包含UV胶与分布于所述UV胶中的所述硅脂颗粒，其中，一所述密封散热胶层中的所述硅脂颗粒以预设浓度均匀分布。
  18. 根据权利要求17所述的柔性OLED显示面板，其中，所述UV胶的材料包括聚丙烯酸酯类、聚乙烯醇类、醋酸乙烯共聚物类中的一者或一者以上。
PCT/CN2018/102273 2018-04-27 2018-08-24 一种柔性oled显示面板 Ceased WO2019205385A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/306,590 US11094913B1 (en) 2018-04-27 2018-08-24 Flexible organic light emitting diode (OLED) display panel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810389127.5 2018-04-27
CN201810389127.5A CN108649136B (zh) 2018-04-27 2018-04-27 一种柔性oled显示面板

Publications (1)

Publication Number Publication Date
WO2019205385A1 true WO2019205385A1 (zh) 2019-10-31

Family

ID=63748079

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/102273 Ceased WO2019205385A1 (zh) 2018-04-27 2018-08-24 一种柔性oled显示面板

Country Status (3)

Country Link
US (1) US11094913B1 (zh)
CN (1) CN108649136B (zh)
WO (1) WO2019205385A1 (zh)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109285462B (zh) * 2018-12-12 2021-04-20 武汉天马微电子有限公司 柔性显示面板及其制作方法、柔性显示装置
CN111490067B (zh) * 2019-01-28 2024-06-14 上海和辉光电股份有限公司 一种柔性显示面板和显示装置
CN110033705B (zh) * 2019-04-29 2022-03-08 武汉天马微电子有限公司 一种显示模组及显示装置
CN110675760A (zh) * 2019-09-30 2020-01-10 云谷（固安）科技有限公司 显示面板及显示装置
CN113539075B (zh) * 2020-04-20 2025-04-29 京东方科技集团股份有限公司 柔性显示结构及其制造方法、显示装置
CN111613141A (zh) * 2020-05-25 2020-09-01 武汉华星光电半导体显示技术有限公司 一种显示模组及显示面板
CN114156307B (zh) * 2020-09-07 2025-10-10 江苏仕邦柔性电子研究院有限公司 一种具有荧光发光层的柔性oled显示面板
CN112241040A (zh) * 2020-10-28 2021-01-19 京东方科技集团股份有限公司 偏光模组、制备偏光模组的方法、显示模组和显示装置
CN112599695B (zh) * 2020-12-10 2022-11-04 深圳市华星光电半导体显示技术有限公司 显示装置
CN113067927A (zh) * 2021-03-23 2021-07-02 芜湖长信科技股份有限公司 一种柔性盖板结构及其生产方法
CN113097374B (zh) 2021-04-01 2023-09-05 厦门天马微电子有限公司 一种显示面板及显示装置
WO2022216120A1 (ko) * 2021-04-09 2022-10-13 삼성전자 주식회사 디스플레이 측면 보호 부재를 포함하는 전자 장치
CN114255669A (zh) * 2021-12-14 2022-03-29 昆山国显光电有限公司 显示屏及其制造方法、显示装置及车辆
CN114627763B (zh) * 2022-03-14 2024-09-24 京东方科技集团股份有限公司 柔性oled显示模组及其制备方法
CN114815031B (zh) * 2022-04-29 2024-02-02 昆山国显光电有限公司 偏光片及显示模组
KR20240029607A (ko) * 2022-08-25 2024-03-06 삼성디스플레이 주식회사 전자 장치 및 이의 제조 방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120261713A1 (en) * 2011-04-18 2012-10-18 Samsung Mobile Display Co., Ltd. Organic light emitting diode lighting apparatus
CN105226201A (zh) * 2015-09-02 2016-01-06 上海和辉光电有限公司 一种柔性oled显示器及其制造方法
CN106601928A (zh) * 2016-12-02 2017-04-26 深圳市华星光电技术有限公司 Oled显示装置
WO2017221549A1 (ja) * 2016-06-24 2017-12-28 コニカミノルタ株式会社 有機エレクトロルミネッセンス発光体、照明装置、および鉄道車両
CN107624200A (zh) * 2015-04-29 2018-01-23 沙特基础工业全球技术公司 用于oled照明应用的密封方法
CN107819024A (zh) * 2017-11-29 2018-03-20 武汉华星光电半导体显示技术有限公司 有机发光显示面板及吸热密封胶

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4519424B2 (ja) * 2003-06-26 2010-08-04 ルネサスエレクトロニクス株式会社 樹脂モールド型半導体装置
JP5006108B2 (ja) * 2007-06-01 2012-08-22 株式会社ジャパンディスプレイイースト 表示装置
US8530990B2 (en) * 2009-07-20 2013-09-10 Sunpower Corporation Optoelectronic device with heat spreader unit
DE102011084276B4 (de) * 2011-10-11 2019-10-10 Osram Oled Gmbh Verkapselung für ein organisches elektronisches bauelement, ein organisches elektronisches bauelement mit der verkapselung und ein verfahren zur herstellung eines organischen elektronischen bauelements mit der verkapselung
US9136293B2 (en) * 2012-09-07 2015-09-15 Taiwan Semiconductor Manufacturing Company, Ltd. Methods and apparatus for sensor module
JP6248941B2 (ja) * 2012-10-17 2017-12-20 株式会社Ｊｏｌｅｄ Ｅｌ表示装置
CN104091890B (zh) * 2014-06-11 2016-03-09 京东方科技集团股份有限公司 一种有机发光器件、有机发光显示装置
CN106206988B (zh) * 2016-08-26 2019-03-15 昆山国显光电有限公司 封装结构及其制备方法、以及应用

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120261713A1 (en) * 2011-04-18 2012-10-18 Samsung Mobile Display Co., Ltd. Organic light emitting diode lighting apparatus
CN107624200A (zh) * 2015-04-29 2018-01-23 沙特基础工业全球技术公司 用于oled照明应用的密封方法
CN105226201A (zh) * 2015-09-02 2016-01-06 上海和辉光电有限公司 一种柔性oled显示器及其制造方法
WO2017221549A1 (ja) * 2016-06-24 2017-12-28 コニカミノルタ株式会社 有機エレクトロルミネッセンス発光体、照明装置、および鉄道車両
CN106601928A (zh) * 2016-12-02 2017-04-26 深圳市华星光电技术有限公司 Oled显示装置
CN107819024A (zh) * 2017-11-29 2018-03-20 武汉华星光电半导体显示技术有限公司 有机发光显示面板及吸热密封胶

Also Published As

Publication number Publication date
US11094913B1 (en) 2021-08-17
CN108649136A (zh) 2018-10-12
US20210257587A1 (en) 2021-08-19
CN108649136B (zh) 2020-05-05

Similar Documents

Publication Publication Date Title
WO2019205385A1 (zh) 一种柔性oled显示面板
WO2021007998A1 (zh) 显示面板、显示模组及显示装置
WO2015196600A1 (zh) Oled器件的封装方法、oled显示面板及oled显示装置
US20160343791A1 (en) Double side oled display device and manufacture method thereof
CN104701353A (zh) 有机发光显示面板和显示装置
CN104659269B (zh) Oled封装方法及oled封装结构
WO2015014036A1 (zh) 柔性有机发光二极管显示器及其制备方法
WO2016101403A1 (zh) Oled封装结构及封装方法
JP2010129598A (ja) 発光装置及びその製造方法
WO2019205342A1 (zh) Oled封装结构及oled显示面板
KR20120039375A (ko) 유기 발광 표시 장치 및 그 제조 방법
US6737799B1 (en) Active matrix organic light emitting diode display and fabrication method of the same
WO2016086533A1 (zh) Oled封装方法及oled封装结构
KR101593059B1 (ko) 유기전계발광소자
WO2020177187A1 (zh) 显示面板及显示模组
CN111540762A (zh) 一种led显示面板及led显示器
US10980111B2 (en) Circuit board and display device
CN104269497B (zh) 一种有机发光二极管封装结构及显示装置
WO2020077699A1 (zh) 显示面板及其封装方法及电子设备
CN107819024B (zh) 有机发光显示面板及吸热密封胶
CN103162183A (zh) 一种发光器件、背光源模组及显示装置
CN101126863A (zh) 具有散热结构的发光二极管光源模块
CN214123908U (zh) 一种Mini LED的柔性封装散热结构
CN114156307B (zh) 一种具有荧光发光层的柔性oled显示面板
JP2016001526A (ja) 表示装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18916439

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18916439

Country of ref document: EP

Kind code of ref document: A1