WO2020191859A1 - Organic light emitting diode display panel, display module and electronic device - Google Patents

Organic light emitting diode display panel, display module and electronic device Download PDF

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Publication number
WO2020191859A1
WO2020191859A1 PCT/CN2019/085806 CN2019085806W WO2020191859A1 WO 2020191859 A1 WO2020191859 A1 WO 2020191859A1 CN 2019085806 W CN2019085806 W CN 2019085806W WO 2020191859 A1 WO2020191859 A1 WO 2020191859A1
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layer
light emitting
organic light
organic layer
organic
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PCT/CN2019/085806
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French (fr)
Chinese (zh)
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孙佳佳
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武汉华星光电半导体显示技术有限公司
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Publication of WO2020191859A1 publication Critical patent/WO2020191859A1/en

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    • 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
    • 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

Definitions

  • the present invention relates to the field of display technology, and in particular to an organic light emitting diode display panel, a display module and an electronic device.
  • OLED Organic Light-Emitting Diode
  • TFE thin film encapsulation
  • the purpose of the present invention is to provide an organic light emitting diode display panel, a display module and an electronic device, which can improve the heat dissipation effect of the display panel, thereby prolonging the service life of the display panel.
  • an organic light emitting diode display panel which includes:
  • the organic light emitting display layer is arranged on the base substrate;
  • the first inorganic layer is arranged on the organic light emitting display layer
  • the first organic layer is provided on the first inorganic layer; the material of the first organic layer is doped with a thermally conductive material; wherein the thermally conductive material includes hexagonal boron nitride nanosheets;
  • the second inorganic layer is arranged on the first organic layer.
  • the present invention also provides a display module, which includes the above-mentioned organic light emitting diode display panel.
  • the present invention also provides an electronic device, which includes the above-mentioned display module.
  • the organic light-emitting diode display panel, display module and electronic device of the present invention because the material of the organic layer is doped with thermally conductive materials, the heat generated by the OLED display panel can be timely discharged through the thin film encapsulation layer, which improves the display panel’s performance The heat dissipation effect further extends the service life of the display panel.
  • FIG. 1 is a schematic diagram of the structure of a conventional organic light emitting diode display panel
  • FIG. 2 is a schematic structural diagram of an organic light emitting diode display panel according to the first embodiment of the present invention
  • Figure 3 is a schematic diagram of an enlarged structure of the organic layer of the present invention.
  • FIG. 4 is a schematic structural diagram of an organic light emitting diode display panel according to the second embodiment of the invention.
  • the existing organic light emitting diode display panel includes a base substrate 11, an organic light emitting display layer 12, a first inorganic layer 13, an organic layer 14 and a second inorganic layer 15.
  • the base substrate 11 includes a substrate and a switch array layer, and the switch array layer is provided on the substrate.
  • the substrate may be a glass substrate or a flexible substrate.
  • the switch array layer includes a plurality of thin film transistors.
  • the organic light emitting display layer 12 includes an anode, an organic light emitting layer, and a cathode.
  • the organic light emitting display layer 12 is located at the gap between two adjacent pixel definition units.
  • the organic light emitting display layer 12 may further include a pixel definition layer.
  • the pixel definition layer includes a plurality of pixel definition units arranged at intervals.
  • the pixel definition layer is located on the anode.
  • the first inorganic layer 13 is disposed on the organic light-emitting display layer 12 and covers the organic light-emitting display layer 12.
  • the organic layer 14 is disposed on the first inorganic layer 13, wherein the organic layer 14 is located on the first inorganic layer 13 in the display area.
  • the second inorganic layer 15 is provided on the organic layer 14.
  • the first inorganic layer 13 and the second inorganic layer 15 are both used to block water and oxygen, and the organic layer 14 is used to buffer and release the stress in the inorganic layer to enhance the flexibility of the OLED panel.
  • FIG. 2 is a schematic structural diagram of an organic light emitting diode display panel according to the first embodiment of the present invention.
  • the organic light emitting diode display panel of the present invention includes a base substrate 11, an organic light emitting display layer 12, a first inorganic layer 13, a first organic layer 21 and a second inorganic layer 15.
  • the base substrate 11 includes a glass substrate and a switch array layer, and the switch array layer is provided on the substrate.
  • the substrate may be a glass substrate or a flexible substrate.
  • the switch array layer includes a plurality of thin film transistors.
  • the organic light emitting display layer 12 includes an anode, an organic light emitting layer, and a cathode.
  • the organic light emitting display layer 12 is located at the gap between two adjacent pixel definition units.
  • the organic light emitting display layer 12 may further include a pixel definition layer.
  • the pixel definition layer includes a plurality of pixel definition units arranged at intervals.
  • the pixel definition layer is located on the anode.
  • the first inorganic layer 13 is disposed on the organic light emitting display layer 12, wherein.
  • the thickness of the first inorganic layer 13 ranges from 0.1 to 1.5 ⁇ m.
  • the preparation process of the first inorganic layer 13 includes one or more combinations of PECVD, ALD, and PLD, and the material of the first inorganic layer 13 includes silicon nitride, silicon oxide, silicon carbide, silicon carbon nitride, At least one of alumina and the like.
  • the first organic layer 21 is provided on the first inorganic layer 13. With reference to FIG. 3, the material of the first organic layer 21 is doped with a thermally conductive material 211.
  • the thermally conductive material 211 includes hexagonal boron nitride nanosheets (BNNS).
  • the thermal conductivity of the thermally conductive material 211 is greater than a preset value.
  • the thermal conductivity of the thermally conductive material 211 is greater than that of most metal materials.
  • the thermally conductive material 211 is used to conduct heat in the display panel from both sides of the first organic layer 21.
  • the thermal conductive material 211 is hexagonal boron nitride nanosheets
  • the angle between the heat dissipation direction of the hexagonal boron nitride nanosheets and the horizontal line is an acute angle, so as to remove the heat in the display panel from the first An organic layer is led out on both sides.
  • the hexagonal boron nitride nanosheets are obtained by ultrasonic peeling of hexagonal boron nitride. Similar to graphene, hexagonal boron nitride has anisotropic thermal conductivity. Its in-plane thermal conductivity is 180-360W/mK, and out-of-plane thermal conductivity is 5-30W/mK. Its thermal conductivity is better than most metal materials.
  • the weight percentage of the thermally conductive material 211 in the first organic layer 21 ranges from 0.1 wt% to 5 wt%. That is, the weight percentage of the thermally conductive material 211 in the first organic layer 21 does not exceed 5 wt%.
  • the thickness of the first organic layer 21 ranges from 8 ⁇ m to 12 ⁇ m.
  • the preparation process of the first organic layer 21 includes one of inkjet printing, spin coating, and screen printing. Then it is cured by UV curing or heat curing. Since two-dimensional BNNS can be filled in organic materials by inkjet printing, spin coating, screen printing, etc., a good orientation can be formed, so that the organic layer has anisotropic thermal conductivity.
  • the material of the first organic layer 21 includes at least one of epoxy resin, silicon-based polymer, and polymethyl methacrylate.
  • the second inorganic layer 15 is provided on the first organic layer 21.
  • the preparation process of the second inorganic layer 15 includes one or more combinations of PECVD, ALD, and PLD, and the material of the second inorganic layer 15 includes silicon nitride, silicon oxide, silicon carbide, and silicon carbon nitride. At least one of, alumina, etc.
  • the thickness of the second inorganic layer 15 ranges from 0.1 to 1.5 ⁇ m.
  • the first inorganic layer 13, the first organic layer 21, and the second inorganic layer 15 constitute a thin film encapsulation layer.
  • FIG. 4 is a schematic structural diagram of an organic light emitting diode display panel according to the second embodiment of the present invention.
  • the organic light emitting diode display panel of this embodiment further includes: a second organic layer 22 and a third inorganic layer 23.
  • the second organic layer 22 is provided on the second inorganic layer 15; the material of the second organic layer 22 is also doped with a thermally conductive material; wherein the material of the second organic layer 22 can be the same as the material of the first organic layer
  • the material of 21 is the same.
  • the heat conduction mode of the second organic layer 22 is the same as the heat conduction direction of the first organic layer 21.
  • the third inorganic layer 23 is provided on the second organic layer 22.
  • the preparation process of the third inorganic layer 23 may include one or a combination of PECVD, ALD, and PLD; the material of the third inorganic layer 23 may include silicon nitride, silicon oxide, silicon carbide, carbonitride At least one of silicon, alumina, etc.
  • the thickness of the third inorganic layer 23 may range from 0.1 to 1.5 ⁇ m.
  • the first inorganic layer 13, the first organic layer 21, the second inorganic layer 15, the second organic layer 22, and the third inorganic layer 23 constitute a thin film encapsulation layer.
  • the heat generated by the OLED display panel can be timely
  • the derivation of the film encapsulation layer improves the heat dissipation effect of the display panel, thereby extending the service life of the display panel.
  • the OLED device is protected and its luminous efficiency is guaranteed; and it can effectively avoid the "overheated” area under the film layer and prevent the pixel failure in the "overheated” area. Extend the life of the pixel.
  • the present invention also provides a display module, which includes any of the above-mentioned organic light emitting diode display panels, and the display module may also include a touch screen.
  • the present invention also provides an electronic device, which includes the above-mentioned display module.
  • the electronic device may be a mobile phone, a tablet computer, or other equipment.
  • the organic light-emitting diode display panel, display module and electronic device of the present invention because the material of the organic layer is doped with a thermally conductive material, the heat generated by the OLED display panel can be timely discharged through the thin film encapsulation layer, and the heat dissipation of the display panel is improved Effect, thereby extending the service life of the display panel.

Abstract

The present invention provides an organic light emitting diode display panel, a display module and an electronic device. The display panel comprises: a base substrate; an organic light emitting display layer provided on the base substrate; a first inorganic layer provided on the organic light emitting display layer; a first organic layer provided on the first inorganic layer, thermally conductive material being doped in the material of the first organic layer, and the thermally conductive material comprising hexagonal boron nitride nanosheets; and a second inorganic layer provided on the first organic layer.

Description

一种有机发光二极管显示面板、显示模组及电子装置Organic light emitting diode display panel, display module and electronic device 技术领域Technical field
本发明涉及显示技术领域，特别是涉及一种有机发光二极管显示面板、显示模组及电子装置。The present invention relates to the field of display technology, and in particular to an organic light emitting diode display panel, a display module and an electronic device.
背景技术Background technique
有机发光二极管显示面板(Organic Light-Emitting Diode，OLED)器件与较传统LCD相比具有重量轻、视角广、响应时间快、耐低温、发光效率高等优点，因此被视其为下一代新型显示技术。Compared with traditional LCDs, Organic Light-Emitting Diode (OLED) devices have the advantages of lighter weight, wide viewing angle, fast response time, low temperature resistance, and high luminous efficiency. Therefore, they are regarded as the next generation of new display technology. .
为了实现OLED器件的封装，薄膜封装（TFE）逐渐成为OLED的主流封装技术，TFE常采用无机/有机/无机交叠的膜层结构，这种密闭的封装方式极大地保护了OLED面板，有效防止了外界水氧对OLED器件的破坏。In order to realize the encapsulation of OLED devices, thin film encapsulation (TFE) has gradually become the mainstream encapsulation technology for OLEDs. TFE often adopts an inorganic/organic/inorganic overlapping film structure. This airtight encapsulation method greatly protects the OLED panel and effectively prevents The external water and oxygen damage the OLED device.
技术问题technical problem
然而，高密闭的封装结构会导致面板散热困难，从而严重缩短了OLED面板的使用寿命。However, a highly airtight package structure will cause difficulty in dissipating heat from the panel, thereby severely shortening the service life of the OLED panel.
技术解决方案Technical solutions
本发明的目的在于提供一种有机发光二极管显示面板、显示模组及电子装置，能够提高显示面板的散热效果，从而延长了显示面板的使用寿命。The purpose of the present invention is to provide an organic light emitting diode display panel, a display module and an electronic device, which can improve the heat dissipation effect of the display panel, thereby prolonging the service life of the display panel.
为解决上述技术问题，本发明提供一种有机发光二极管显示面板，其包括：To solve the above technical problems, the present invention provides an organic light emitting diode display panel, which includes:
衬底基板；Base substrate
有机发光显示层，设于所述衬底基板上；The organic light emitting display layer is arranged on the base substrate;
第一无机层，设于所述有机发光显示层上；The first inorganic layer is arranged on the organic light emitting display layer;
第一有机层，设于所述第一无机层上；所述第一有机层的材料中掺杂有导热材料；其中所述导热材料包括六方氮化硼纳米片；The first organic layer is provided on the first inorganic layer; the material of the first organic layer is doped with a thermally conductive material; wherein the thermally conductive material includes hexagonal boron nitride nanosheets;
第二无机层，设于所述第一有机层上。The second inorganic layer is arranged on the first organic layer.
本发明还提供一种显示模组，其包括上述有机发光二极管显示面板。The present invention also provides a display module, which includes the above-mentioned organic light emitting diode display panel.
本发明还提供一种电子装置，其包括上述显示模组。The present invention also provides an electronic device, which includes the above-mentioned display module.
有益效果Beneficial effect
本发明的有机发光二极管显示面板、显示模组及电子装置，由于在有机层的材料中掺杂导热材料，因而能够将OLED显示面板产生的热量及时地通过薄膜封装层导出，提高了显示面板的散热效果，进而延长了显示面板的使用寿命。The organic light-emitting diode display panel, display module and electronic device of the present invention, because the material of the organic layer is doped with thermally conductive materials, the heat generated by the OLED display panel can be timely discharged through the thin film encapsulation layer, which improves the display panel’s performance The heat dissipation effect further extends the service life of the display panel.
附图说明Description of the drawings
图1为现有有机发光二极管显示面板的结构示意图；FIG. 1 is a schematic diagram of the structure of a conventional organic light emitting diode display panel;
图2为本发明实施例一的有机发光二极管显示面板的结构示意图；2 is a schematic structural diagram of an organic light emitting diode display panel according to the first embodiment of the present invention;
图3为本发明有机层的放大结构示意图；Figure 3 is a schematic diagram of an enlarged structure of the organic layer of the present invention;
图4为本发明实施例二的有机发光二极管显示面板的结构示意图。4 is a schematic structural diagram of an organic light emitting diode display panel according to the second embodiment of the invention.
本发明的实施方式Embodiments of the invention
以下各实施例的说明是参考附加的图式，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，结构相似的单元是以相同标号表示。The description of the following embodiments refers to the attached drawings to illustrate specific embodiments that the present invention can be implemented. The directional terms mentioned in the present invention, such as "up", "down", "front", "rear", "left", "right", "in", "out", "side", etc., are for reference only The direction of the additional schema. Therefore, the directional terms used are used to describe and understand the present invention, rather than to limit the present invention. In the figure, units with similar structures are indicated by the same reference numerals.
如图1所示，现有的有机发光二极管显示面板包括衬底基板11、有机发光显示层12、第一无机层13、有机层14以及第二无机层15。As shown in FIG. 1, the existing organic light emitting diode display panel includes a base substrate 11, an organic light emitting display layer 12, a first inorganic layer 13, an organic layer 14 and a second inorganic layer 15.
衬底基板11包括基板和开关阵列层，开关阵列层设于基板上。基板可以为玻璃基板或者柔性基板。开关阵列层包括多个薄膜晶体管。The base substrate 11 includes a substrate and a switch array layer, and the switch array layer is provided on the substrate. The substrate may be a glass substrate or a flexible substrate. The switch array layer includes a plurality of thin film transistors.
有机发光显示层12包括阳极、有机发光层以及阴极。其中有机发光显示层12位于相邻两个所述像素定义单元之间的间隙处。有机发光显示层12还可包括像素定义层。像素定义层包括多个间隔设置的像素定义单元。像素定义层位于阳极上。The organic light emitting display layer 12 includes an anode, an organic light emitting layer, and a cathode. The organic light emitting display layer 12 is located at the gap between two adjacent pixel definition units. The organic light emitting display layer 12 may further include a pixel definition layer. The pixel definition layer includes a plurality of pixel definition units arranged at intervals. The pixel definition layer is located on the anode.
第一无机层13设于所述有机发光显示层12上，且包覆在所述有机发光显示层12外。The first inorganic layer 13 is disposed on the organic light-emitting display layer 12 and covers the organic light-emitting display layer 12.
有机层14设于第一无机层13上，其中有机层14位于显示区域内的第一无机层13上。The organic layer 14 is disposed on the first inorganic layer 13, wherein the organic layer 14 is located on the first inorganic layer 13 in the display area.
第二无机层15设于有机层14上。其中第一无机层13和第二无机层15均用于阻隔水氧，有机层14用于缓冲和释放无机层内的应力，增强OLED面板的柔性。The second inorganic layer 15 is provided on the organic layer 14. The first inorganic layer 13 and the second inorganic layer 15 are both used to block water and oxygen, and the organic layer 14 is used to buffer and release the stress in the inorganic layer to enhance the flexibility of the OLED panel.
请参照图2至3，图2为本发明实施例一的有机发光二极管显示面板的结构示意图。Please refer to FIGS. 2 to 3. FIG. 2 is a schematic structural diagram of an organic light emitting diode display panel according to the first embodiment of the present invention.
本发明的有机发光二极管显示面板包括衬底基板11、有机发光显示层12、第一无机层13、第一有机层21以及第二无机层15。The organic light emitting diode display panel of the present invention includes a base substrate 11, an organic light emitting display layer 12, a first inorganic layer 13, a first organic layer 21 and a second inorganic layer 15.
衬底基板11包括玻璃基板和开关阵列层，开关阵列层设于基板上。基板可以为玻璃基板或者柔性基板。开关阵列层包括多个薄膜晶体管。The base substrate 11 includes a glass substrate and a switch array layer, and the switch array layer is provided on the substrate. The substrate may be a glass substrate or a flexible substrate. The switch array layer includes a plurality of thin film transistors.
有机发光显示层12包括阳极、有机发光层以及阴极。其中有机发光显示层12位于相邻两个所述像素定义单元之间的间隙处。此外有机发光显示层12还可包括像素定义层。像素定义层包括多个间隔设置的像素定义单元。像素定义层位于阳极上。The organic light emitting display layer 12 includes an anode, an organic light emitting layer, and a cathode. The organic light emitting display layer 12 is located at the gap between two adjacent pixel definition units. In addition, the organic light emitting display layer 12 may further include a pixel definition layer. The pixel definition layer includes a plurality of pixel definition units arranged at intervals. The pixel definition layer is located on the anode.
第一无机层13设于所述有机发光显示层12上，其中。所述第一无机层13的厚度范围为0.1～1.5μm。The first inorganic layer 13 is disposed on the organic light emitting display layer 12, wherein. The thickness of the first inorganic layer 13 ranges from 0.1 to 1.5 μm.
所述第一无机层13的制备工艺包括PECVD、ALD、PLD中的一种或多种组合，所述第一无机层13的材料包括氮化硅、氧化硅、碳化硅、碳氮化硅、氧化铝等中的至少一种。The preparation process of the first inorganic layer 13 includes one or more combinations of PECVD, ALD, and PLD, and the material of the first inorganic layer 13 includes silicon nitride, silicon oxide, silicon carbide, silicon carbon nitride, At least one of alumina and the like.
第一有机层21设于所述第一无机层13上。结合图3，所述第一有机层21的材料中掺杂有导热材料211。所述导热材料211包括六方氮化硼纳米片（BNNS）。The first organic layer 21 is provided on the first inorganic layer 13. With reference to FIG. 3, the material of the first organic layer 21 is doped with a thermally conductive material 211. The thermally conductive material 211 includes hexagonal boron nitride nanosheets (BNNS).
其中所述导热材料211的导热系数大于预设值。比如所述导热材料211的导热系数大于大部分金属材料的导热系数。The thermal conductivity of the thermally conductive material 211 is greater than a preset value. For example, the thermal conductivity of the thermally conductive material 211 is greater than that of most metal materials.
其中，为了提高散热效果，所述导热材料211用于将所述显示面板中的热量从所述第一有机层21的两侧导出。比如当所述导热材料211为六方氮化硼纳米片时，所述六方氮化硼纳米片的散热方向与水平线之间的夹角为锐角，以将所述显示面板中的热量从所述第一有机层的两侧导出。Wherein, in order to improve the heat dissipation effect, the thermally conductive material 211 is used to conduct heat in the display panel from both sides of the first organic layer 21. For example, when the thermal conductive material 211 is hexagonal boron nitride nanosheets, the angle between the heat dissipation direction of the hexagonal boron nitride nanosheets and the horizontal line is an acute angle, so as to remove the heat in the display panel from the first An organic layer is led out on both sides.
在一实施方式中，其中所述六方氮化硼纳米片是通过对六方氮化硼进行超声剥离得到的。六方氮化硼与石墨烯类似，具有各向异性的导热性能，其面内导热系数为180～360W/mK，面外导热系数为5～30W/mK，其导热性能优于大部分金属材料。In one embodiment, the hexagonal boron nitride nanosheets are obtained by ultrasonic peeling of hexagonal boron nitride. Similar to graphene, hexagonal boron nitride has anisotropic thermal conductivity. Its in-plane thermal conductivity is 180-360W/mK, and out-of-plane thermal conductivity is 5-30W/mK. Its thermal conductivity is better than most metal materials.
为了提高有机层的散热效果，且不影响其缓冲效果，所述导热材料211在第一有机层21中的重量百分比范围为0.1wt%至5wt%。也即所述导热材料211在第一有机层21中的重量百分比不超过5wt%。In order to improve the heat dissipation effect of the organic layer without affecting its buffering effect, the weight percentage of the thermally conductive material 211 in the first organic layer 21 ranges from 0.1 wt% to 5 wt%. That is, the weight percentage of the thermally conductive material 211 in the first organic layer 21 does not exceed 5 wt%.
在一实施方式中，所述第一有机层21的厚度范围为8μm～12μm。In one embodiment, the thickness of the first organic layer 21 ranges from 8 μm to 12 μm.
为了提高散热效果，在一实施方式中，所述第一有机层21的制备工艺包括喷墨打印、旋涂以及丝网印刷中的一种。之后通过UV固化或加热固化对其进行固化。由于通过喷墨打印、旋涂、丝网印刷等方式将二维BNNS填充在有机材料中可以形成良好的取向，从而使有机层具有各向异性的导热性能。In order to improve the heat dissipation effect, in one embodiment, the preparation process of the first organic layer 21 includes one of inkjet printing, spin coating, and screen printing. Then it is cured by UV curing or heat curing. Since two-dimensional BNNS can be filled in organic materials by inkjet printing, spin coating, screen printing, etc., a good orientation can be formed, so that the organic layer has anisotropic thermal conductivity.
其中所述第一有机层21的材料包括环氧树脂、硅基聚合物以及聚甲基丙烯酸甲酯中的至少一种。The material of the first organic layer 21 includes at least one of epoxy resin, silicon-based polymer, and polymethyl methacrylate.
第二无机层15设于所述第一有机层21上。其中所述第二无机层15的制备工艺包括PECVD、ALD、PLD中的一种或多种组合，所述第二无机层15的材料包括氮化硅、氧化硅、碳化硅、碳氮化硅、氧化铝等中的至少一种。所述第二无机层15的厚度范围为0.1～1.5μm。The second inorganic layer 15 is provided on the first organic layer 21. The preparation process of the second inorganic layer 15 includes one or more combinations of PECVD, ALD, and PLD, and the material of the second inorganic layer 15 includes silicon nitride, silicon oxide, silicon carbide, and silicon carbon nitride. At least one of, alumina, etc. The thickness of the second inorganic layer 15 ranges from 0.1 to 1.5 μm.
其中第一无机层13、第一有机层21、第二无机层15构成了薄膜封装层。The first inorganic layer 13, the first organic layer 21, and the second inorganic layer 15 constitute a thin film encapsulation layer.
请参照图4，图4为本发明实施例二的有机发光二极管显示面板的结构示意图。Please refer to FIG. 4, which is a schematic structural diagram of an organic light emitting diode display panel according to the second embodiment of the present invention.
在上一实施例的基础上，本实施例的有机发光二极管显示面板还包括：第二有机层22和第三无机层23。On the basis of the previous embodiment, the organic light emitting diode display panel of this embodiment further includes: a second organic layer 22 and a third inorganic layer 23.
第二有机层22设于所述第二无机层15上；所述第二有机层22的材料也掺杂有导热材料；其中所述第二有机层22的材料可与所述第一有机层21的材料相同。其中第二有机层22的导热方式与所述第一有机层21的导热方向相同。The second organic layer 22 is provided on the second inorganic layer 15; the material of the second organic layer 22 is also doped with a thermally conductive material; wherein the material of the second organic layer 22 can be the same as the material of the first organic layer The material of 21 is the same. The heat conduction mode of the second organic layer 22 is the same as the heat conduction direction of the first organic layer 21.
第三无机层23设于所述第二有机层22上。所述第三无机层23的制备工艺可包括PECVD、ALD、PLD中的一种或多种组合；所述第三无机层23的材料可包括氮化硅、氧化硅、碳化硅、碳氮化硅、氧化铝等中的至少一种。所述第三无机层23的厚度范围可为0.1～1.5μm。The third inorganic layer 23 is provided on the second organic layer 22. The preparation process of the third inorganic layer 23 may include one or a combination of PECVD, ALD, and PLD; the material of the third inorganic layer 23 may include silicon nitride, silicon oxide, silicon carbide, carbonitride At least one of silicon, alumina, etc. The thickness of the third inorganic layer 23 may range from 0.1 to 1.5 μm.
其中第一无机层13、第一有机层21、第二无机层15第二有机层22以及第三无机层23构成了薄膜封装层。The first inorganic layer 13, the first organic layer 21, the second inorganic layer 15, the second organic layer 22, and the third inorganic layer 23 constitute a thin film encapsulation layer.
由于在有机层的材料中掺杂导热材料，且所述导热材料包括六方氮化硼纳米片，且由于六方氮化硼纳米片的导热性能较好，因而能够将OLED显示面板产生的热量及时地通过薄膜封装层导出，提高显示面板的散热效果，进而延长了显示面板使用寿命。此外由于将OLED显示面板工作时产生的热量及时传导出来，从而对OLED器件进行保护，保证其发光效率；且可以有效避免膜层下方出现“过热”区域，防止“过热”区域内的像素失效，延长了像素的使用寿命。Because the material of the organic layer is doped with a thermally conductive material, and the thermally conductive material includes hexagonal boron nitride nanosheets, and because the hexagonal boron nitride nanosheets have better thermal conductivity, the heat generated by the OLED display panel can be timely The derivation of the film encapsulation layer improves the heat dissipation effect of the display panel, thereby extending the service life of the display panel. In addition, due to the timely conduction of the heat generated by the OLED display panel during operation, the OLED device is protected and its luminous efficiency is guaranteed; and it can effectively avoid the "overheated" area under the film layer and prevent the pixel failure in the "overheated" area. Extend the life of the pixel.
本发明还提供一种显示模组，其包括上述任意一种有机发光二极管显示面板，该显示模组还可包括触摸屏。The present invention also provides a display module, which includes any of the above-mentioned organic light emitting diode display panels, and the display module may also include a touch screen.
本发明还提供一种电子装置，其包括上述显示模组，该电子装置可以为手机、平板电脑等设备。The present invention also provides an electronic device, which includes the above-mentioned display module. The electronic device may be a mobile phone, a tablet computer, or other equipment.
本发明的有机发光二极管显示面板、显示模组及电子装置，由于在有机层的材料中掺杂导热材料，因而能够将OLED显示面板产生的热量及时地通过薄膜封装层导出，提高显示面板的散热效果，进而延长了显示面板的使用寿命。The organic light-emitting diode display panel, display module and electronic device of the present invention, because the material of the organic layer is doped with a thermally conductive material, the heat generated by the OLED display panel can be timely discharged through the thin film encapsulation layer, and the heat dissipation of the display panel is improved Effect, thereby extending the service life of the display panel.
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。In summary, although the present invention has been disclosed as above in preferred embodiments, the above-mentioned preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various modifications without departing from the spirit and scope of the present invention. Such changes and modifications, therefore, the protection scope of the present invention is subject to the scope defined by the claims.

Claims (20)

  1. 一种有机发光二极管显示面板，其包括：An organic light emitting diode display panel, which includes:
    衬底基板；Base substrate
    有机发光显示层，设于所述衬底基板上；The organic light emitting display layer is arranged on the base substrate;
    第一无机层，设于所述有机发光显示层上；The first inorganic layer is arranged on the organic light emitting display layer;
    第一有机层，设于所述第一无机层上；所述第一有机层的材料中掺杂有导热材料；其中所述导热材料包括六方氮化硼纳米片；The first organic layer is provided on the first inorganic layer; the material of the first organic layer is doped with a thermally conductive material; wherein the thermally conductive material includes hexagonal boron nitride nanosheets;
    第二无机层，设于所述第一有机层上。The second inorganic layer is arranged on the first organic layer.
  2. 根据权利要求1所述的有机发光二极管显示面板，其中，所述有机发光二极管显示面板还包括：The organic light emitting diode display panel of claim 1, wherein the organic light emitting diode display panel further comprises:
    第二有机层，设于所述第二无机层上；所述第二有机层的材料也掺杂有所述导热材料；The second organic layer is provided on the second inorganic layer; the material of the second organic layer is also doped with the thermally conductive material;
    第三无机层，设于所述第二有机层上。The third inorganic layer is arranged on the second organic layer.
  3. 根据权利要求1所述的有机发光二极管显示面板，其中，The organic light emitting diode display panel of claim 1, wherein:
    所述导热材料的导热系数大于预设值。The thermal conductivity of the thermally conductive material is greater than a preset value.
  4. 根据权利要求1所述的有机发光二极管显示面板，其中，The organic light emitting diode display panel of claim 1, wherein:
    所述六方氮化硼纳米片是通过对六方氮化硼进行超声剥离得到的。The hexagonal boron nitride nanosheets are obtained by ultrasonic stripping of hexagonal boron nitride.
  5. 根据权利要求1所述的有机发光二极管显示面板，其中，The organic light emitting diode display panel of claim 1, wherein:
    所述导热材料在所述第一有机层中的重量百分比范围为0.1wt%至5wt%。The weight percentage of the thermally conductive material in the first organic layer ranges from 0.1 wt% to 5 wt%.
  6. 根据权利要求1所述的有机发光二极管显示面板，其中，The organic light emitting diode display panel of claim 1, wherein:
    所述导热材料用于将所述显示面板中的热量从所述第一有机层的两侧导出。The thermally conductive material is used to conduct heat in the display panel from both sides of the first organic layer.
  7. 根据权利要求1所述的有机发光二极管显示面板，其中，The organic light emitting diode display panel of claim 1, wherein:
    所述第一有机层的厚度范围为8μm～12μm。The thickness of the first organic layer ranges from 8 μm to 12 μm.
  8. 根据权利要求1所述的有机发光二极管显示面板，其中，The organic light emitting diode display panel of claim 1, wherein:
    所述第一有机层的制备工艺包括喷墨打印、旋涂以及丝网印刷中的至少一种。The preparation process of the first organic layer includes at least one of inkjet printing, spin coating and screen printing.
  9. 根据权利要求1所述的有机发光二极管显示面板，其中，The organic light emitting diode display panel of claim 1, wherein:
    所述第一有机层的材料包括环氧树脂、硅基聚合物以及聚甲基丙烯酸甲酯中的至少一种。The material of the first organic layer includes at least one of epoxy resin, silicon-based polymer, and polymethyl methacrylate.
  10. 一种显示模组，其包括有机发光二极管显示面板，其包括：A display module includes an organic light emitting diode display panel, which includes:
    衬底基板；Base substrate
    有机发光显示层，设于所述衬底基板上；The organic light emitting display layer is arranged on the base substrate;
    第一无机层，设于所述有机发光显示层上；The first inorganic layer is arranged on the organic light emitting display layer;
    第一有机层，设于所述第一无机层上；所述第一有机层的材料中掺杂有导热材料；其中所述导热材料包括六方氮化硼纳米片；The first organic layer is provided on the first inorganic layer; the material of the first organic layer is doped with a thermally conductive material; wherein the thermally conductive material includes hexagonal boron nitride nanosheets;
    第二无机层，设于所述第一有机层上。The second inorganic layer is arranged on the first organic layer.
  11. 根据权利要求10所述的显示模组，其中，所述有机发光二极管显示面板还包括：10. The display module of claim 10, wherein the organic light emitting diode display panel further comprises:
    第二有机层，设于所述第二无机层上；所述第二有机层的材料也掺杂有所述导热材料；The second organic layer is provided on the second inorganic layer; the material of the second organic layer is also doped with the thermally conductive material;
    第三无机层，设于所述第二有机层上。The third inorganic layer is arranged on the second organic layer.
  12. 根据权利要求10所述的显示模组，其中，The display module according to claim 10, wherein:
    所述导热材料的导热系数大于预设值。The thermal conductivity of the thermally conductive material is greater than a preset value.
  13. 根据权利要求10所述的显示模组，其中，The display module according to claim 10, wherein:
    所述六方氮化硼纳米片是通过对六方氮化硼进行超声剥离得到的。The hexagonal boron nitride nanosheets are obtained by ultrasonic stripping of hexagonal boron nitride.
  14. 根据权利要求10所述的显示模组，其中，The display module according to claim 10, wherein:
    所述导热材料在所述第一有机层中的重量百分比范围为0.1wt%至5wt%。The weight percentage of the thermally conductive material in the first organic layer ranges from 0.1 wt% to 5 wt%.
  15. 根据权利要求10所述的显示模组，其中，The display module according to claim 10, wherein:
    所述导热材料用于将所述显示面板中的热量从所述第一有机层的两侧导出。The thermally conductive material is used to conduct heat in the display panel from both sides of the first organic layer.
  16. 根据权利要求10所述的显示模组，其中，The display module according to claim 10, wherein:
    所述第一有机层的厚度范围为8μm～12μm。The thickness of the first organic layer ranges from 8 μm to 12 μm.
  17. 根据权利要求10所述的显示模组，其中，The display module according to claim 10, wherein:
    所述第一有机层的制备工艺包括喷墨打印、旋涂以及丝网印刷中的至少一种。The preparation process of the first organic layer includes at least one of inkjet printing, spin coating, and screen printing.
  18. 根据权利要求10所述的显示模组，其中，The display module according to claim 10, wherein:
    所述第一有机层的材料包括环氧树脂、硅基聚合物以及聚甲基丙烯酸甲酯中的至少一种。The material of the first organic layer includes at least one of epoxy resin, silicon-based polymer, and polymethyl methacrylate.
  19. 一种电子装置，其包括显示模组，其包括有机发光二极管显示面板，其包括：An electronic device includes a display module, which includes an organic light emitting diode display panel, and includes:
    衬底基板；Base substrate
    有机发光显示层，设于所述衬底基板上；The organic light emitting display layer is arranged on the base substrate;
    第一无机层，设于所述有机发光显示层上；The first inorganic layer is arranged on the organic light emitting display layer;
    第一有机层，设于所述第一无机层上；所述第一有机层的材料中掺杂有导热材料；其中所述导热材料包括六方氮化硼纳米片；The first organic layer is provided on the first inorganic layer; the material of the first organic layer is doped with a thermally conductive material; wherein the thermally conductive material includes hexagonal boron nitride nanosheets;
    第二无机层，设于所述第一有机层上。The second inorganic layer is arranged on the first organic layer.
  20. 根据权利要求19所述的电子装置，其中，所述有机发光二极管显示面板还包括：The electronic device of claim 19, wherein the organic light emitting diode display panel further comprises:
    第二有机层，设于所述第二无机层上；所述第二有机层的材料也掺杂有所述导热材料；The second organic layer is provided on the second inorganic layer; the material of the second organic layer is also doped with the thermally conductive material;
    第三无机层，设于所述第二有机层上。The third inorganic layer is arranged on the second organic layer.
PCT/CN2019/085806 2019-03-27 2019-05-07 Organic light emitting diode display panel, display module and electronic device WO2020191859A1 (en)

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