WO2017202145A1 - 有机电致发光显示背板、盖板及器件 - Google Patents

有机电致发光显示背板、盖板及器件 Download PDF

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Publication number
WO2017202145A1
WO2017202145A1 PCT/CN2017/079321 CN2017079321W WO2017202145A1 WO 2017202145 A1 WO2017202145 A1 WO 2017202145A1 CN 2017079321 W CN2017079321 W CN 2017079321W WO 2017202145 A1 WO2017202145 A1 WO 2017202145A1
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organic electroluminescent
support
cover
back sheet
sheet according
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PCT/CN2017/079321
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English (en)
French (fr)
Inventor
艾雨
谢学武
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京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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Priority to US15/736,707 priority Critical patent/US10535716B2/en
Publication of WO2017202145A1 publication Critical patent/WO2017202145A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/04—Sealing arrangements, e.g. against humidity
    • 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
    • H10K50/805—Electrodes
    • 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
    • H10K50/842—Containers
    • H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
    • 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
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • H10K50/8445—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
    • 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
    • H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
    • 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
    • H10K59/8723—Vertical spacers, e.g. arranged between the sealing arrangement and the 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
    • H10K59/87—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
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/874—Passivation; Containers; Encapsulations including getter material or desiccant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/422—Luminescent, fluorescent, phosphorescent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/536—Hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/206—Organic displays, e.g. OLED
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/208—Touch screens
    • 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
    • H10K59/10—OLED displays
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • 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
    • H10K59/10—OLED displays
    • H10K59/17—Passive-matrix OLED displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/851—Division of substrate

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to an organic electroluminescent display backplane, a cover, and a device.
  • the existing light-emitting diode (OLED) display device is a device that realizes graphic display by using an invertible color phenomenon generated by an organic semiconductor material driven by a current.
  • OLED display device has ultra-light, ultra-thin, high brightness, large viewing angle, low voltage, low power consumption, fast response, high definition, shock resistance, bendability, low cost, simple process, low use of raw materials, high luminous efficiency and temperature A wide range of advantages, is considered to be the most promising next-generation display technology.
  • the OLED device generally comprises a cathode, an anode and an organic light-emitting layer interposed between the cathode and the anode. Under the applied voltage, electrons are injected from the cathode into the organic light-emitting layer, and holes are injected into the organic light-emitting layer from the anode, and electrons and holes are injected. When the organic light-emitting layer meets and combines to generate excitons, it emits light.
  • the organic light-emitting layer may be mixed with foreign matter, and since the distance between the cathode and the anode is small, about 0.3 um, during the vacuum pressing process, The foreign matter is likely to pierce the film of the cathode or the anode due to the large pressure, resulting in a short circuit between the cathode and the anode, so that the entire pixel point cannot be lit, and a dark spot appears, which seriously affects the display quality.
  • the present disclosure provides an organic electroluminescent display back sheet, a cover plate, and a display device, which can reduce dark spots in an OLED device.
  • an organic electroluminescent display backsheet provided by the present disclosure includes a backplate body and a plurality of support pillars, the backplate body including a substrate and an array of organic electroluminescent elements formed on the substrate; A support post is disposed on a side of the array of organic electroluminescent elements that faces away from the substrate.
  • each support column is located in a spaced region between adjacent pixels.
  • the backplane further includes a buffer layer disposed between the array of organic electroluminescent elements and the support post.
  • the material of the buffer layer comprises a water absorbing material.
  • the backboard further includes a filling layer disposed between the buffer layer and the support pillar.
  • the support column is adjacent to the filling layer, and the hardness of the support column is higher than the hardness of the filling layer.
  • the material of the filling layer comprises a water absorbing material.
  • the material of the support column is the same as the material of the filling layer.
  • an organic electroluminescent display cover provided by the present disclosure includes a cover body and a plurality of support columns disposed on a first side of the cover body, wherein the first side is the cover The body faces one side of the backing plate that is adapted to the cover.
  • each support column is located in a spaced region between adjacent pixels.
  • the material of the support column comprises a water absorbing material.
  • the organic electroluminescent display device provided by the present disclosure includes Any of the above back sheets or any of the above covers.
  • the pressure mainly acts on the support column during vacuum pressing, that is, the position of the support column corresponds to
  • the organic electroluminescent element array is subjected to a large pressure, and the organic electroluminescent element array corresponding to the position where the support column is not provided is subjected to a small pressure, so that the organic electric power corresponding to the position where the support column is not provided is not provided.
  • the possibility that the foreign matter in the array of the light-emitting elements pierces the film layer of the organic electroluminescent element array is reduced, thereby achieving the basic purpose of reducing dark spots.
  • FIG. 1 shows a cross-sectional view of an organic electroluminescent display backsheet in an embodiment of the present disclosure
  • FIG. 2 shows a cross-sectional view of an organic electroluminescent display device in an embodiment of the present disclosure
  • FIG. 3 is a cross-sectional view showing an organic electroluminescence display panel in an embodiment of the present disclosure
  • FIG. 4 is a cross-sectional view showing an organic electroluminescence display device in an embodiment of the present disclosure
  • an embodiment of the present disclosure provides an organic electroluminescence display backplane.
  • the backplane 100' includes a backplane body and a plurality of support columns 105.
  • the backplane body includes a base.
  • the support pillar 105 is disposed on a side of the organic electroluminescent element array 102 facing away from the substrate 101;
  • the backing plate 100' further includes an array disposed on the organic electroluminescent element
  • the back plate 100' further includes a filling layer 104 disposed between the buffer layer 103 and the support post 105, the support post 105 is adjacent to the filling layer 104, and the hardness of the support post 105 Higher than the hardness of the filling layer 104.
  • the pressure mainly acts on the support column 105 during vacuum pressing, that is, the position of the support column 105 corresponds to
  • the organic electroluminescent element array 102 is subjected to a relatively high pressure, and the organic electroluminescent element array 102 corresponding to the position where the support post 105 is not provided is subjected to a small pressure, so that the position of the support column 105 is not provided.
  • the possibility that the foreign matter in the corresponding organic electroluminescent element array 102 pierces the organic electroluminescent element array film layer is reduced, thereby achieving the basic purpose of reducing dark spots.
  • the corresponding organic electroluminescent element array 102 of the support columns 105a and 105b is subjected to
  • the pressure of the organic electroluminescent element array 102 corresponding to the interval between the support columns 105a and 105b is relatively small, and therefore the organic electroluminescence corresponding to the interval between the support columns 105a and 105b
  • the foreign matter 106 in the element array 102 is also subjected to a relatively small pressure, thereby reducing the possibility that it pierces the organic electroluminescent element array film layer to reduce dark spots.
  • the buffer layer 103 since the buffer layer 103 is disposed between the organic electroluminescent element array 102 and the support post 105, the buffer layer 103 will have a certain pressure on the backing plate 100' during vacuum pressing. The buffering, thereby reducing the foreign matter in the organic electroluminescent element array 102, is pierced by the sudden large pressure, and the dark spots can be further reduced.
  • the buffer layer 103 may be made of a water absorbing material to prevent external moisture from entering the organic electroluminescent element array 102 of the back sheet 100', thereby extending the life of the back sheet 100'.
  • the buffer layer 103 is not necessarily disposed between the organic electroluminescent element array 102 and the support post 105, and even if the buffer layer 103 is provided, it is not necessary to use a water absorbing material.
  • the technical solution can also achieve the basic purpose of reducing dark spots, and therefore should fall within the protection scope of the present disclosure.
  • the filling layer 104 since the filling layer 104 is disposed between the buffer layer 103 and the support pillar 105, the support pillar 105 is adjacent to the filling layer 104, so that the influence of the outside on the organic electroluminescent element array 102 can be reduced, and the back is extended. The life of the board 100'.
  • the filling layer 104 may be made of a water absorbing material to absorb external moisture.
  • the filling layer 104 is not necessarily provided, and even if the filling layer 104 is provided, it is not necessary to use a water absorbing material, and the technical solution can also achieve the basic purpose of reducing dark spots, and thus Should fall within the protection of the public text.
  • the hardness of the support column 105 is necessarily higher than the hardness of the filling layer 104.
  • the support column 105 can be made of a water absorbing material.
  • the filling layer 104 is also made of a water absorbing material, the same material as the filling layer 104 can be selected, but the fluidity is weaker than the filling layer 104, and When it is exposed to ultraviolet light, it cures faster than the filling layer 104 to ensure that the support column 105 has sufficient hardness to support.
  • the support column 105 can also be selected from materials such as polystyrene resin which are excellent in elasticity and adhesion.
  • one of the alternative structures includes a first electrode layer 1021, an organic light emitting layer 1022, and a second electrode layer 1023 which are sequentially disposed on the substrate 101.
  • the organic light-emitting layer 1022 can be equivalent to one light-emitting diode.
  • the organic light-emitting layer 1022 emits light.
  • the first electrode layer 1021 may be provided as a cathode
  • the second electrode layer 1023 may be provided as an anode
  • the first electrode layer 1021 may be provided as an anode
  • the second electrode layer 1023 may be provided as a cathode.
  • the electrode layer as the cathode can be formed by a vapor deposition process using a metal
  • the electrode layer as an anode can be formed by a vapor deposition process using a transparent conductive material such as ITO.
  • the light-emitting direction of the organic electroluminescent element array 102 faces away from the substrate 101, and since the support pillar 105 is provided in the light-emitting direction, the support is avoided.
  • the post 105 affects the normal display of the backing plate 100', and each of the support posts 105 can be placed in a spaced region between adjacent pixels. In order to facilitate the fabrication of the support columns 105, the respective support columns 105 may be evenly arranged in a spaced region between adjacent pixels.
  • the light-emitting direction of the organic electroluminescent element array 102 faces the substrate 101, regardless of whether the support pillar 105 is disposed between adjacent pixels.
  • the spacing area does not affect the normal display of the backplane 100'.
  • an embodiment of the present disclosure provides an organic electroluminescence display cover.
  • the cover 200' includes a cover body 201 and a first side disposed on the cover body 201.
  • a plurality of support columns 202, the first side being the side of the cover body 201 facing the backing plate 100 that is adapted to the cover plate 200'.
  • the cover 200' since a plurality of support columns 202 are disposed on the first side of the cover body 201, when the cover 200' is attached to the back plate 100, When vacuum pressing is performed, the pressure mainly acts on the support column 202, that is, the corresponding back plate 100 at the position of the support column 202 is subjected to a large pressure.
  • the back plate 100 corresponding to the position where the support post 202 is not provided is subjected to a small pressure, so that the possibility of the foreign material in the back plate 100 corresponding to the position where the support post 202 is not provided is less likely to puncture the film layer. Small, thus achieving the basic purpose of reducing dark spots.
  • the support post 202 can be made of a water absorbing material to absorb external moisture and improve the service life of the back plate 100 mated with the cover 200'.
  • the support post 202 does not have to be made of a water absorbing material, and the technical solution can still achieve the basic purpose of reducing dark spots, and therefore should fall within the protection scope of the present disclosure.
  • the support column 202 disposed on the cover 200' may block the light emitted from the back plate 100, so that each support can be
  • the pillars 202 are disposed in spaced regions between adjacent pixels.
  • each of the support posts 202 may be evenly disposed in a spaced region between adjacent pixels.
  • an embodiment of the present disclosure provides an organic electroluminescent display device comprising the back sheet 100' provided in the first aspect or the cover 200' provided in the second aspect.
  • the organic electroluminescent display device in this embodiment may further include a cover plate adapted to the back plate.
  • the formed display device can be specifically applied to: in a display panel, an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, or the like, in any product or component having a display function.
  • the dark spot of the organic electroluminescent display device provided by the embodiment can be reduced by about 75% compared with the organic electroluminescent display device of the prior art, and the display quality is greatly improved.

Abstract

提供一种有机电致发光显示背板、盖板及器件，该背板（100'）包括背板主体和多个支撑柱（105），背板主体包括基底（101）以及形成在基底（101）上的有机电致发光元件阵列（102）；支撑柱（105）被设置在有机电致发光元件阵列（102）背离基底（101）的一侧。

Description

有机电致发光显示背板、盖板及器件
相关申请的交叉引用
本申请要求于2016年05月27日递交的中国专利申请第201620526575.1号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开文本涉及显示技术领域，尤其是涉及一种有机电致发光显示背板、盖板及器件。
背景技术
现有机发光二极管(OLED)显示装置是一种利用有机半导体材料在电流的驱动下产生的可逆变色现象来实现图形显示的设备。OLED显示装置具有超轻、超薄、高亮度、大视角、低电压、低功耗、快响应、高清晰度、抗震、可弯曲、低成本、工艺简单、使用原材料少、发光效率高和温度范围广等优点，被认为是最有发展前途的新一代显示技术。
OLED器件一般包括阴极、阳极和夹设在阴极和阳极之间的有机发光层，在外加电压作用下，电子从阴极注入有机发光层中，空穴从阳极注入有机发光层中，电子和空穴在有机发光层中相遇复合产生激子即辐射出光。在OLED器件尤其是大尺寸的OLED器件的生产过程中，有机发光层可能会混入异物，由于阴极和阳极之间的距离较小，约为0.3um左右，因此在进行真空压合的过程中，异物由于受到较大的压力很可能会刺穿阴极或阳极的膜层，导致阴极和阳极之间短路，从而使整个像素点无法点亮，出现暗点，严重影响显示品质。
目前，通过制程管制的方式将异物控制在0.3um以下是比较困难的，因此很难减少由于异物产生的暗点。
发明内容
针对以上缺陷，本公开文本提供一种有机电致发光显示背板、盖板及显示器件，可以减少OLED器件中的暗点。
第一方面，本公开文本提供的有机电致发光显示背板包括背板主体和多个支撑柱，所述背板主体包括基底以及形成在所述基底上的有机电致发光元件阵列；所述支撑柱设置在所述有机电致发光元件阵列背离所述基底的一侧。
可选的，各个支撑柱位于相邻像素之间的间隔区域。
可选的，所述背板还包括设置在所述有机电致发光元件阵列与所述支撑柱之间的缓冲层。
可选的，所述缓冲层的材质包括吸水材料。
可选的，所述背板还包括设置在所述缓冲层与所述支撑柱之间的填充层。
可选地，所述支撑柱与所述填充层邻接，且所述支撑柱的硬度高于所述填充层的硬度。
可选的，所述填充层的材质包括吸水材料。
可选的，所述支撑柱的材质与所述填充层的材质相同。
第二方面，本公开文本提供的有机电致发光显示盖板包括盖板主体和设置在所述盖板主体的第一侧的多个支撑柱，其中，所述第一侧为所述盖板主体的面对与所述盖板相适配的背板的一侧。
可选的，各个支撑柱位于相邻像素之间的间隔区域。
可选的，所述支撑柱的材质包括吸水材料。
第三方面，本公开文本提供的有机电致发光显示器件包括 上述任一背板或上述任一盖板。
本公开文本提供的有机电致发光显示背板、盖板及器件中，由于设置有多个支撑柱，因此在真空压合时压力主要作用在支撑柱上，也就是说，支撑柱位置处对应的有机电致发光元件阵列受到的压力较大，而对于未设置支撑柱的位置所对应的有机电致发光元件阵列受到的压力较小，这样的话，未设置支撑柱的位置所对应的有机电致发光元件阵列中的异物刺破有机电致发光元件阵列膜层的可能性就会减小，从而达到减少暗点的基本目的。
附图说明
通过参考附图会更加清楚的理解本公开文本的特征信息和优点，附图是示意性的而不应理解为对本公开文本进行任何限制，在附图中：
图1示出了本公开文本一实施例中有机电致发光显示背板的剖视图；
图2示出了本公开文本一实施例中有机电致发光显示器件的剖视图；
图3示出了本公开文本一实施例中有机电致发光显示盖板的剖视图；
图4示出了本公开文本一实施例中有机电致发光显示器件的剖视图；
附图标记说明：
100-现有技术中的有机电致发光显示背板；100’-本公开文本中的有机电致发光显示背板；101-基底；102-有机电致发光元件阵列；1021-第一电极层；1022-有机发光层；1023-第二电极层；103-缓冲层；104-填充层；105a、105b、105-背板中的支撑柱； 106-异物；200-现有技术中的有机电致发光显示盖板；200’-本公开文本中的有机电致发光显示盖板；201-盖板主体；202-盖板中的支撑柱。
具体实施方式
为了能够更清楚地理解本公开文本的上述目的、特征和优点，下面结合附图和具体实施方式对本公开文本进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也相应地改变。
除非上下文中另外明确地指出，否则在本文和所附权利要求中所使用的词语的单数形式包括复数，反之亦然。因而，当提及单数时，通常包括相应术语的复数。相似地，措辞“包含”和“包括”将解释为包含在内而不是独占性地。同样地，术语“包括”和“或”应当解释为包括在内的，除非本文中明确禁止这样的解释。在本文中使用术语“实例”之处，特别是当其位于一组术语之后时，所述“实例”仅仅是示例性的和阐述性的，且不应当被认为是独占性的或广泛性的。
在下面的描述中阐述了很多具体细节以便于充分理解本公开文本，但是，本公开文本还可以采用其他不同于在此描述的其他方式来实施，因此，本公开文本的保护范围并不受下面公开的具体实施例的限制。
第一方面，本公开文本一实施例提供一种有机电致发光显示背板，如图1所示，该背板100’包括背板主体和多个支撑柱105；其中，背板主体包括基底101以及形成在基底101上的有机电致发光元件阵列102；支撑柱105设置在有机电致发光元件阵列102背离基底101的一侧；该背板100’还包括设置在有机电致发光元件阵列102与支撑柱105之间的缓冲层103；该背板100’还包括设置在缓冲层103与支撑柱105之间的填充层104，支撑柱105与填充层104邻接，且支撑柱105的硬度高于填充层104的硬度。
本实施例提供的有机电致发光显示背板100’中，由于设置有多个支撑柱105，因此在真空压合时压力主要作用在支撑柱105上，也就是说，支撑柱105位置处对应的有机电致发光元件阵列102受到的压力较大，而对于未设置支撑柱105的位置所对应的有机电致发光元件阵列102受到的压力较小，这样的话，未设置支撑柱105的位置所对应的有机电致发光元件阵列102中的异物刺破有机电致发光元件阵列膜层的可能性就会减小，从而达到减少暗点的基本目的。
举例来说，如图2所示，当将本实施例提供的背板100’与盖板200相贴合后进行真空压合时，支撑柱105a和105b对应的有机电致发光元件阵列102受到的压力会比较大，支撑柱105a和105b之间的间隔所对应的有机电致发光元件阵列102受到的压力会比较小，因此位于支撑柱105a和105b之间的间隔所对应的有机电致发光元件阵列102中的异物106受到的压力也会比较小，从而减小其刺破有机电致发光元件阵列膜层的可能性，以减少暗点。
本实施例中，由于在有机电致发光元件阵列102与支撑柱105之间设置有缓冲层103，因此在真空压合时，缓冲层103会对施加到背板100’上的巨大压力进行一定的缓冲，从而减少有机电致发光元件阵列102中的异物因受到突然的巨大压力而刺破膜层，可以进一步减少暗点。而且，缓冲层103可以采用吸水材料制作，以避免外界水分进入背板100’的有机电致发光元件阵列102，从而延长背板100’的使用寿命。当然，在一些可替代的实施例中，在有机电致发光元件阵列102与支撑柱105之间并不必须要设置缓冲层103，即便设置缓冲层103也并不必须要采用吸水材料制作，其技术方案也能达到减少暗点的基本目的，因此也应落入本公开文本的保护范围之内。
本实施例中，由于在缓冲层103和支撑柱105之间设置有填充层104，支撑柱105与该填充层104邻接，因此可以减小外界对有机电致发光元件阵列102的影响，延长背板100’的使用寿命。在实际制作时，填充层104可以采用吸水材料制作，以便吸收外界水分。当然，在一些可替代的实施例中，并不必须要设置填充层104，即便设置填充层104也并不必须要采用吸水材料制作，其技术方案也能达到减少暗点的基本目的，因此也应落入公开文本的保护范围之内。
本实施例中，为保证支撑柱105的支撑作用，支撑柱105的硬度必然要高于填充层104的硬度。在实际制作时，支撑柱105可以采用吸水材料制作，在填充层104也采用吸水材料制作的情况下，可以选择与填充层104相同的材质，但是其流动性要弱于填充层104，而且在受到紫外光线照射时其固化速度要快于填充层104，以保证支撑柱105有足够的硬度以起到支撑作用。当然，支撑柱105还可以选择聚苯乙烯树脂等弹性和粘附性较好的材料。
本实施例中，对有机电致发光元件阵列102的具体结构不做 限定，在具体实施时可以根据需要自行设置。如图1所示，其中一种可选的结构包括依次设置在基底101上的第一电极层1021、有机发光层1022和第二电极层1023。有机发光层1022可以等效为一个发光二极管，当第一电极层1021和第二电极层1023之间的电压大于发光二极管的开启电压时，有机发光层1022就会发光。在实际制作时，可以将第一电极层1021设置为阴极，将第二电极层1023设置为阳极，也可以将第一电极层1021设置为阳极，将第二电极层1023设置为阴极。其中，作为阴极的电极层可以采用金属通过蒸镀工艺形成，作为阳极的电极层可以采用透明导电材料例如ITO通过蒸镀工艺形成。在第一电极层1021为阴极且第二电极层1023为阳极的情况下，有机电致发光元件阵列102的出光方向背离基底101，而由于在出光方向上设置有支撑柱105，因此为避免支撑柱105对背板100’的正常显示造成影响，可将各个支撑柱105设置在相邻像素之间的间隔区域。为方便制作支撑柱105，可以将各个支撑柱105均匀布设在相邻像素之间的间隔区域。当然，在第一电极层1021为阳极且第二电极层1023为阴极的情况下，有机电致发光元件阵列102的出光方向朝向基底101，此时无论支撑柱105是否设置相邻像素之间的间隔区域，都不会对背板100’的正常显示造成影响。
第二方面，本公开文本一实施例提供一种有机电致发光显示盖板，如图3、4所示，该盖板200’包括盖板主体201和设置在盖板主体201的第一侧的多个支撑柱202，第一侧为盖板主体201面对与盖板200’相适配的背板100的一侧。
本实施例提供的有机电致发光显示盖板200’中，由于在盖板主体201的第一侧设置有多个支撑柱202，因此当将该盖板200’与背板100相贴合后进行真空压合时，压力主要作用在支撑柱202上，也就是说，支撑柱202位置处对应的背板100受到的压力较大， 而对于未设置支撑柱202的位置所对应的背板100受到的压力较小，这样的话，未设置支撑柱202的位置所对应的背板100中的异物刺破膜层的可能性就会减小，从而达到减少暗点的基本目的。
本实施例中，支撑柱202可以采用吸水材料制作，以便对外界水分进行吸收，提高与盖板200’配合的背板100的使用寿命。当然，在一些可替代的实施例中，支撑柱202并不必须要采用吸水材料制作，其技术方案仍能够达到减少暗点的基本目的，因此也应落入本公开文本的保护范围之内。
在本实施例中，由于背板100的出光方向有可能朝向盖板200’，因此为避免盖板200’上设置的支撑柱202会遮挡到背板100所出射的光线，因此可以将各个支撑柱202设置在相邻像素之间的间隔区域。而且，为了方便制作支撑柱202，可以将各个支撑柱202均匀布设在相邻像素之间的间隔区域。
第三方面，本公开文本一实施例提供一种有机电致发光显示器件，该显示器件包括第一方面提供的背板100’或第二方面提供的盖板200’。
在具体实施时，本实施例中的有机电致发光显示器件还可以包括与背板相适配的盖板。形成的显示器件可具体应用于：显示面板、电子纸、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品中或部件中。
经实验证明，相对于现有技术中的有机电致发光显示器件，本实施例提供的有机电致发光显示器件的暗点可以减少75％左右，大大改善显示品质。
虽然结合附图描述了本公开文本的实施方式，但是本领域技术人员可以在不脱离本公开文本的精神和范围的情况下做出各种修改和变型，这样的修改和变型均落入由所附权利要求所限定的范围之内。

Claims (12)

  1. 一种有机电致发光显示背板，包括背板主体和多个支撑柱，其中，所述背板主体包括基底以及形成在所述基底上的有机电致发光元件阵列；所述支撑柱被设置在所述有机电致发光元件阵列背离所述基底的一侧。
  2. 根据权利要求1所述的背板，其中，所述支撑柱位于相邻像素之间的间隔区域。
  3. 根据权利要求1所述的背板，其中，还包括设置在所述有机电致发光元件阵列与所述支撑柱之间的缓冲层。
  4. 根据权利要求3所述的背板，其中，所述缓冲层的材质包括吸水材料。
  5. 根据权利要求3所述的背板，还包括设置在所述缓冲层与所述支撑柱之间的填充层。
  6. 根据权利要求5所述的背板，其中，所述支撑柱与所述填充层邻接，且所述支撑柱的硬度高于所述填充层的硬度。
  7. 根据权利要求5所述的背板，其中，所述填充层的材质包括吸水材料。
  8. 根据权利要求5或7所述的背板，其中，所述支撑柱的材质与所述填充层的材质相同。
  9. 一种有机电致发光显示盖板，包括盖板主体和设置在所述盖板主体的第一侧的多个支撑柱，其中，所述第一侧为所述盖板主体的面对与所述盖板相适配的背板的一侧。
  10. 根据权利要求9所述的盖板，其中，所述支撑柱位于相邻像素之间的间隔区域。
  11. 根据权利要求9所述的盖板，其中，所述支撑柱的材质包括吸水材料。
  12. 一种有机电致发光显示器件，其中，包括如权利要求1-7任一项所述的背板或如权利要求9-11任一所述的盖板。
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CN205645819U (zh) * 2016-05-27 2016-10-12 合肥鑫晟光电科技有限公司 有机电致发光显示背板、盖板及器件

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