WO2016188095A1 - 有机发光显示器件及其制作方法和显示装置 - Google Patents

有机发光显示器件及其制作方法和显示装置 Download PDF

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WO2016188095A1
WO2016188095A1 PCT/CN2015/097259 CN2015097259W WO2016188095A1 WO 2016188095 A1 WO2016188095 A1 WO 2016188095A1 CN 2015097259 W CN2015097259 W CN 2015097259W WO 2016188095 A1 WO2016188095 A1 WO 2016188095A1
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layer
organic light
light emitting
display device
anode
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PCT/CN2015/097259
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English (en)
French (fr)
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杨久霞
白峰
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京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Publication of WO2016188095A1 publication Critical patent/WO2016188095A1/zh

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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/10OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H10K50/125OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
    • H10K50/13OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
    • H10K50/131OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit with spacer layers between the electroluminescent layers
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80Constructional details
    • H10K59/805Electrodes
    • H10K59/8051Anodes
    • H10K59/80517Multilayers, e.g. transparent multilayers
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/10OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H10K50/125OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
    • H10K50/13OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80Constructional details
    • H10K59/875Arrangements for extracting light from the devices

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  • the present disclosure relates to the field of display technologies, and in particular, to an organic light emitting display device, a method of fabricating the same, and a display device.
  • the organic light-emitting display is an active light-emitting device, which has the advantages of light weight, wide viewing angle, low power consumption, fast response speed, and flexible display. Therefore, the organic electroluminescent display has been widely used in the display field and the lighting field.
  • the anode material of the organic light-emitting display device is mostly made of ITO.
  • the current external quantum efficiency of the OLED display device is low, that is, the luminous efficiency is low, so it is necessary to provide a solution to improve the organic The luminous efficiency of the light-emitting display device.
  • the present disclosure provides an organic light emitting display device, a manufacturing method thereof, and a display device to solve the problem that the organic light emitting display device has low luminous efficiency.
  • the present disclosure provides an organic light emitting display device including an anode, an organic light emitting layer, and a cathode, the anode including a layer of a tantalum pentoxide material, a layer of a gold material, and a layer of a material of molybdenum trioxide.
  • the organic light emitting display device is a white organic light emitting display device.
  • the organic light emitting layer includes a first light emitting layer and a second light emitting layer stacked in a stack; the first light emitting layer is for emitting green light and red light; and the second light emitting layer is for emitting blue light and yellow light .
  • the first luminescent layer comprises a green luminescent layer and a red luminescent layer disposed in a stack;
  • the second luminescent layer comprises a blue luminescent layer and a yellow luminescent layer disposed in a stack.
  • a charge generating layer is disposed between the first light emitting layer and the second light emitting layer.
  • the organic light emitting display device further includes: a thin film encapsulation layer disposed outside the anode or the cathode.
  • the organic light emitting display device further includes:
  • a hole transport layer disposed between the anode and the organic light emitting layer
  • An electron transport layer disposed between the cathode and the organic light emitting layer
  • a hole injection layer disposed between the hole transport layer and the anode
  • An electron injection layer disposed between the electron transport layer and the cathode
  • An electron blocking layer disposed between the organic light emitting layer and the hole transporting layer;
  • the present disclosure provides a display device including the above-described organic light emitting display device.
  • the present disclosure provides a method for fabricating an organic light emitting display device, including:
  • the anode comprising a layer of ruthenium pentoxide material, a layer of gold material and a layer of molybdenum trioxide material;
  • An organic light-emitting layer and an anode are sequentially formed on the cathode, and the anode includes a layer of a tantalum pentoxide material, a layer of a gold material, and a layer of a material of molybdenum trioxide.
  • forming the anode on the substrate comprises:
  • a layer of antimony pentoxide material, a layer of gold material and a layer of molybdenum trioxide material are formed by a vacuum evaporation process.
  • the organic light-emitting layer is formed to emit white light.
  • the organic light emitting layer is formed to include a first light emitting layer and a second light emitting layer which are disposed in a stacked manner;
  • the first luminescent layer is configured to emit green light and red light
  • the second luminescent layer is for emitting blue light and yellow light.
  • the first light emitting layer is formed to include a green light emitting layer and a red light emitting layer which are disposed in a stacked manner; and the second light emitting layer is formed to include a blue light emitting layer and a yellow light emitting layer which are disposed in a stacked manner.
  • the method for fabricating the organic light emitting display device further includes: forming a charge generating layer between the first light emitting layer and the second light emitting layer.
  • the method for fabricating the organic light emitting display device further includes:
  • a thin film encapsulation layer is formed on the anode.
  • the method for fabricating the organic light emitting display device further includes: forming a hole injection layer on the anode;
  • An electron transport layer, an organic light emitting layer, an electron blocking layer, a hole transport layer, and an anode are sequentially formed on the electron injecting layer.
  • the organic light-emitting display device of the present disclosure has an anode composed of a plurality of conductive layer materials (Nb 2 O 5 , Au, MoO 3 ), which avoids the use of ITO as an anode material in the prior art.
  • the microcavity effect makes the luminous efficiency of the light emitting display device effectively improved.
  • FIG. 1 is a schematic structural view of an organic light emitting display device according to a first embodiment of the present disclosure
  • FIG. 3 is a first schematic structural diagram of an organic light emitting display device according to a second embodiment of the present disclosure
  • FIG. 4 is a second schematic structural diagram of an organic light emitting display device according to a second embodiment of the present disclosure.
  • FIG. 5 is a third schematic structural diagram of an organic light emitting display device according to a second embodiment of the present disclosure.
  • FIG. 6 and FIG. 7 are schematic structural diagrams of an organic light emitting display device according to a third embodiment of the present disclosure.
  • FIG. 8 and FIG. 9 are schematic structural diagrams of an organic light emitting display device according to a fourth embodiment of the present disclosure.
  • FIG. 10 and FIG. 11 are flowcharts of a method of fabricating an organic light emitting display device according to a sixth embodiment of the present disclosure.
  • the organic light emitting display device provided in this embodiment includes an anode 1, an organic light emitting layer 2, and a cathode 3. .
  • the anode 1 includes a layer of niobium pentoxide (Nb 2 O 5 ) material 11, a layer of gold (Au) material 12, and a layer 13 of molybdenum trioxide (MoO 3 ) material.
  • the Nb 2 O 5 material layer 11 , the Au material layer 12 , and the MoO 3 material layer 13 may be disposed in any order.
  • the anode 1 may further include other material layers as needed, which is not limited in the present disclosure.
  • the organic light-emitting display device no longer uses ITO as an anode material, but uses a plurality of conductive layers composed of Nb 2 O 5 , Au, and MoO 3 as an anode material, thereby avoiding the use of ITO in the prior art.
  • the microcavity effect caused by the anode material enables the luminous efficiency of the light-emitting display device to be effectively improved.
  • the organic light emitting display device is a white organic light emitting display device.
  • the organic light-emitting layer 2 includes a first light-emitting layer 21 and a second light-emitting layer 22 which are stacked in a stack.
  • the first luminescent layer 21 is for emitting green light and red light; the second luminescent layer 22 is for emitting blue light and yellow light.
  • the first luminescent layer 21 may further include a green luminescent layer 211 and a red luminescent layer 212 disposed in a stacked manner; wherein the green luminescent layer and the red luminescent layer are positioned above and below
  • the second luminescent layer 22 may further include a blue luminescent layer 221 and a yellow luminescent layer 222 disposed in a stacked manner; wherein the upper and lower positions of the blue luminescent layer and the yellow luminescent layer are adjustable.
  • the first luminescent layer 21 emits green light and red light
  • the second luminescent layer 22 emits blue light.
  • the light and the yellow light cause the organic light-emitting layer 2 to emit white light, that is, the organic light-emitting display device becomes a white light organic light-emitting display device.
  • the organic light emitting layer includes a dual light emitting layer, that is, a first light emitting layer and a second light emitting layer, and the first light emitting layer and the second light emitting layer work together to emit white light.
  • the organic light-emitting layer of the embodiment can effectively improve the light-emitting efficiency and the light-emitting brightness.
  • connection is made between the first luminescent layer 21 and the second luminescent layer 22 by the charge generating layer 4, see FIG.
  • the charge generating layer 4 is required not only to have a good charge injection and generation effect but also to have a high transmittance at the emission peak of the organic light-emitting layer to lower the absorption loss.
  • the charge generating layer 4 can be made of a metal, an undoped organic material, an organic pn junction composed of p-type and n-type doping, or a metal oxide or the like.
  • the first luminescent layer and the second luminescent layer are stacked such that the current density inside the first luminescent layer and the second luminescent layer is low, so that the heat quenching effect caused by the excess current can be effectively avoided, and the organic luminescent layer is further improved. Current efficiency, brightness and lifetime.
  • the organic light-emitting display device includes, in addition to the anode 1, the organic light-emitting layer 2, and the cathode 3 described above, including: disposed outside the anode 1 or the cathode 3.
  • Thin film encapsulation layer 30 disposed outside the anode 1 or the cathode 3.
  • the thin film encapsulation layer 30 is disposed outside the anode 1 or the cathode 3, which can effectively block the penetration of water and oxygen into the organic light emitting display device, satisfies the packaging performance of the organic light emitting display device, and prolongs the service life of the organic light emitting display device.
  • the organic light-emitting display device includes, in addition to the anode 1, the organic light-emitting layer 2, the cathode 3, and the thin film encapsulation layer 30 described above, the following:
  • a hole transport layer 5 disposed between the anode 1 and the organic light-emitting layer 2;
  • An electron transport layer 6 disposed between the cathode 3 and the organic light-emitting layer 2;
  • a hole injection layer 7 disposed between the hole transport layer 5 and the anode 1;
  • An electron injection layer 8 disposed between the electron transport layer 6 and the cathode 3;
  • An electron blocking layer 9 is provided between the organic light-emitting layer 2 and the hole transport layer 5.
  • FIG. 8 is an anode 1 formed on a substrate (not shown), and then a hole injection layer 7, a hole transport layer 5, an electron blocking layer 9, an organic light-emitting layer 2, an electron transport layer 6, and an electron are formed.
  • FIG. 9 is a schematic view showing the structure of the organic light-emitting display device in which the layer 8 and the cathode 3 are implanted;
  • FIG. 9 is a step of forming the cathode 3 on the substrate, and then forming the electron injecting layer 8, the electron transporting layer 6, the organic light-emitting layer 2, the electron blocking layer 9, and the hole.
  • the above layers are provided to improve the transmission efficiency of electrons and holes, thereby improving the performance of the organic light-emitting display device.
  • a fifth embodiment of the present disclosure provides a display device including the organic light emitting display device of the above embodiment.
  • the display device provided in this embodiment has better display performance because it includes the organic light-emitting display device having higher luminous efficiency of the above embodiment.
  • the display device of the embodiment may be any product or component having a display function such as an electronic paper, a mobile phone, a tablet computer, a video camera, a camera, a television, a digital photo frame, and a navigator.
  • a display function such as an electronic paper, a mobile phone, a tablet computer, a video camera, a camera, a television, a digital photo frame, and a navigator.
  • FIG. 10 and FIG. 11 are flowcharts showing a method of fabricating an organic light emitting display device according to a sixth embodiment of the present disclosure. As shown in FIG. 10 and FIG. 11 , a method for fabricating an organic light emitting display device includes:
  • Step 101 forming an anode on the substrate, the anode comprising a layer of antimony pentoxide material, a layer of gold material and a layer of molybdenum trioxide material.
  • forming an anode on the substrate includes:
  • a layer of antimony pentoxide material, a layer of gold material and a layer of molybdenum trioxide material are formed by a vacuum evaporation process.
  • the ruthenium pentoxide material layer, the gold material layer and the molybdenum trioxide material layer may be disposed in any order, and the anode may further include other material layers as needed, and the forming process may also adopt other known to those skilled in the art. The process is not limited in this disclosure.
  • Step 102 sequentially forming an organic light-emitting layer and a cathode on the anode.
  • Step 101' forming a cathode on the substrate.
  • Step 102' an organic light-emitting layer and an anode are sequentially formed on the cathode, and the anode includes a layer of a tantalum pentoxide material, a layer of a gold material, and a layer of a material of molybdenum trioxide.
  • the above organic light-emitting layer may be used to emit white light.
  • the organic light emitting layer includes a first light emitting layer and a second light emitting layer which are disposed in a stack, and forming the organic light emitting layer includes:
  • a second luminescent layer is formed on the first luminescent layer, the second luminescent layer being used to emit blue light and yellow light.
  • the upper and lower positions of the first luminescent layer and the second luminescent layer are adjustable.
  • forming the organic light emitting layer includes:
  • a first luminescent layer made of a green luminescent material and a red luminescent material, the first luminescent layer for emitting green and red light.
  • the first luminescent layer includes a green luminescent layer and a red luminescent layer which are stacked, wherein the upper and lower positions of the green luminescent layer and the red luminescent layer are adjustable.
  • the forming the first luminescent layer comprises: forming a green luminescent layer by the green luminescent material, and forming a red luminescent layer by using the red luminescent material on the green luminescent layer;
  • a red light emitting layer is formed by the red light emitting material, and a green light emitting layer is formed on the red light emitting layer by using the green light emitting material.
  • a second luminescent layer is formed on the first luminescent layer from the blue luminescent material and the yellow luminescent material, the second luminescent layer for emitting blue light and yellow light.
  • the second luminescent layer comprises a blue luminescent layer and a yellow luminescent layer which are arranged in a stacked manner, wherein the upper and lower positions of the blue luminescent layer and the yellow luminescent layer are adjustable.
  • the forming the second luminescent layer comprises: forming a blue luminescent layer by the blue luminescent material, and forming a yellow luminescent layer by using the yellow luminescent material on the blue luminescent layer.
  • a yellow light emitting layer is formed by the yellow light emitting material, and a blue light emitting layer is formed on the yellow light emitting layer by using a blue light emitting material.
  • the forming the organic light emitting layer further includes:
  • step C since the first light-emitting layer and the second light-emitting layer are preferably connected by the charge generating layer, it is necessary to form a charge generating layer between the first light-emitting layer and the second light-emitting layer.
  • the charge generating layer not only needs to have a good charge injection and generation effect, but also needs to have a high transmittance at the emission peak of the organic light-emitting layer to reduce absorption loss.
  • the charge generating layer can be made of a metal, an undoped organic, an organic pn junction composed of p-type and n-type doping, or a metal oxide.
  • the first luminescent layer and the second luminescent layer are stacked such that the current density inside the first luminescent layer and the second luminescent layer is low, so that the heat quenching effect caused by the excess current can be effectively avoided, and the organic luminescent layer is further improved. Current efficiency, brightness and lifetime.
  • the organic light-emitting layer including the double-layer light-emitting layer in the embodiment can effectively improve the light-emitting efficiency and the light-emitting brightness compared to the single-layer light-emitting layer that can emit white light.
  • the method of fabricating the organic light emitting display device further includes: forming an anode, an organic light emitting layer, and a cathode on the substrate, and forming a thin film encapsulation layer on the cathode; or
  • a thin film encapsulation layer is formed on the anode.
  • a thin film encapsulation layer is disposed outside the anode or the cathode, which can effectively block water and oxygen from penetrating into the organic light emitting display device, satisfies the packaging performance of the organic light emitting display device, and prolongs the service life of the organic light emitting display device.
  • the method for fabricating an organic light emitting display device further includes:
  • Step 201 forming a hole injection layer on the anode
  • Step 202 sequentially forming a hole transport layer, an electron blocking layer, an organic light emitting layer, an electron transport layer, an electron injection layer, and a cathode on the hole injection layer.
  • Step 201' forming an electron injection layer on the cathode
  • Step 202' An electron transport layer, an organic light emitting layer, an electron blocking layer, a hole transporting layer, a hole injecting layer, and an anode are sequentially formed on the electron injecting layer.
  • the hole injection layer, the hole transport layer, the electron blocking layer, the electron transport layer, The electron injecting layer can improve the efficiency of electron and hole transport, thereby improving the performance of the organic light emitting display device.
  • the anode is an anode structure of a multilayer conductive layer structure including Nb2O5, Au, and MoO3.
  • an organic light-emitting display device having a plurality of conductive layers of an anode of Nb2O5, Au, and MoO3 can be fabricated.
  • the organic light-emitting display device in which the anode is ITO in the prior art since the microcavity effect caused by using ITO as the anode material is avoided, the luminous efficiency of the organic light-emitting display device can be effectively improved.

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Abstract

一种有机发光显示器件,包括阳极(1)、有机发光层(2)和阴极(3),阳极(1)包括五氧化二铌材料层(11)、金材料层(12)和三氧化钼材料层(13)。该有机发光显示器件的阳极采用了Nb 2O 5、Au和MoO 3材料,避免了现有技术中采用ITO作为阳极材料而引起的微腔效应,使得发光显示器件的发光效率得到有效提升。

Description

有机发光显示器件及其制作方法和显示装置
相关申请的交叉引用
本申请要求于2015年05月22日递交的中国专利申请第201510266776.2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
本公开涉及显示技术领域,具体涉及一种有机发光显示器件及其制作方法和显示装置。
背景技术
有机发光显示器为主动发光型器件,具有轻薄、宽视角、功耗低、响应速度快、可实现柔性显示的优势,因此有机电致发光显示器在显示领域及照明领域得到了广泛应用。
有机发光显示器件的阳极材料多采用ITO制成,但是,由于微腔效应的影响,目前的OLED显示器件外部量子效率较低,即发光效率较低,因此需要提供一种解决方法,以提高有机发光显示器件的发光效率。
发明内容
针对现有技术中的缺陷,本公开提供一种有机发光显示器件及其制作方法和显示装置,以解决有机发光显示器件发光效率低的问题。
为解决上述技术问题,本公开提供以下技术方案:
第一方面,本公开提供了一种有机发光显示器件,包括阳极、有机发光层和阴极,所述阳极包括五氧化二铌材料层、金材料层和三氧化钼材料层。
进一步地,所述有机发光显示器件为白光有机发光显示器件。
进一步地,所述有机发光层包括层叠设置的第一发光层和第二发光层;所述第一发光层用于发出绿光和红光;所述第二发光层用于发出蓝光和黄光。
进一步地,所述第一发光层包括层叠设置的绿光发光层和红光发光层;所述第二发光层包括层叠设置的蓝光发光层和黄光发光层。
进一步地,所述第一发光层和第二发光层之间设有电荷产生层。
进一步地,所述有机发光显示器件还包括:设置在所述阳极或所述阴极外的薄膜封装层。
进一步地,所述有机发光显示器件还包括:
设于所述阳极和所述有机发光层之间的空穴传输层;
设于所述阴极和所述有机发光层之间的电子传输层;
设于所述空穴传输层和所述阳极之间的空穴注入层;
设于所述电子传输层和所述阴极之间的电子注入层;
设于所述有机发光层和所述空穴传输层之间的电子阻挡层;
第二方面,本公开提供了一种显示装置,包括上面所述的有机发光显示器件。
第三方面,本公开提供了一种有机发光显示器件的制作方法,包括:
提供基板,在所述基板上形成阳极,所述阳极包括五氧化二铌材料层、金材料层和三氧化钼材料层;
在所述阳极上依次形成有机发光层和阴极;
或,
提供基板,在所述基板上形成阴极;
在所述阴极上依次形成有机发光层和阳极,所述阳极包括五氧化二铌材料层、金材料层和三氧化钼材料层。
进一步地,所述在基板上形成阳极包括:
采用真空蒸镀工艺形成五氧化二铌材料层、金材料层和三氧化钼材料层。
进一步地,将所述有机发光层形成为用于发出白光。
进一步地,将所述有机发光层形成为包括层叠设置的第一发光层和第二发光层;其中,
所述第一发光层用于发出绿光和红光;
所述第二发光层用于发出蓝光和黄光。
进一步地,将所述第一发光层形成为包括层叠设置的绿光发光层和红光发光层;将所述第二发光层形成为包括层叠设置的蓝光发光层和黄光发光层。
进一步地,所述的有机发光显示器件的制作方法,还包括:在所述第一发光层和第二发光层之间形成电荷产生层。
进一步地,所述的有机发光显示器件的制作方法,还包括:
在所述基板上形成所述阳极、所述有机发光层和所述阴极之后,在所述阴极上形成薄膜封装层;
或,
在所述基板上形成所述阴极、所述有机发光层和所述阳极之后,在所述阳极上形成薄膜封装层。
进一步地,所述的有机发光显示器件的制作方法,还包括:在所述阳极上形成空穴注入层;
在所述空穴注入层上依次形成空穴传输层、电子阻挡层、有机发光层、电子传输层、电子注入层和阴极;
或,
在所述阴极上形成电子注入层;
在所述电子注入层上依次形成电子传输层、有机发光层、电子阻挡层、空穴传输层和阳极。
[根据细则26改正15.12.2015] 
由上述技术方案可知,本公开所述的有机发光显示器件,其阳极采用多层导电层材料构成(Nb2O5、Au、MoO3),避免了现有技术中采用ITO作为阳极材料而引起的微腔效应,使得发光显示器件的发光效率得到有效提升。
附图说明
为了更清楚地说明本实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本公开的一些实施例,对于本领域普通技术人员来讲,在 不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本公开的第一个实施例提供的有机发光显示器件的结构示意图;
[根据细则26改正15.12.2015] 
图2是采用Nb2O5、Au和MoO3作为阳极材料和采用ITO作为阳极材料的有机发光显示器件的发光效率的效果对比图;
图3是本公开的第二个实施例提供的有机发光显示器件的第一种结构示意图;
图4是本公开的第二个实施例提供的有机发光显示器件的第二种结构示意图;
图5是本公开的第二个实施例提供的有机发光显示器件的第三种结构示意图;
图6和图7是本公开的第三个实施例提供的有机发光显示器件的结构示意图;
图8和图9是本公开的第四个实施例提供的有机发光显示器件的结构示意图;
图10和图11是本公开的第六个实施例提供的有机发光显示器件的制作方法的流程图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚,下面将结合本公开实施例中的附图,对本公开实施例中的技术方案进行清楚、完整的描述,显然,所描述的实施例是本公开一部分实施例,而不是全部的实施例。基于本公开中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本公开保护的范围。
在本公开的描述中,需要说明的是,术语“上”、“下”、“顶”、“底”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本公开和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本公开的限制。
当介绍本发明的元素及其实施例时,冠词“一”、“一个”、“该”和“所 述”旨在表示存在一个或者多个要素。用语“包含”、“包括”、“含有”和“具有”旨在包括性的并且表示可以存在除所列要素之外的另外的要素。
[根据细则26改正15.12.2015] 
图1示出了本公开的第一个实施例提供的有机发光显示器件的结构示意图,如图1所示,本实施例提供的有机发光显示器件包括阳极1、有机发光层2和阴极3,。其中,所述阳极1包括五氧化二铌(Nb2O5)材料层11、金(Au)材料层12和三氧化钼(MoO3)材料层13。
[根据细则26改正15.12.2015] 
其中,所述Nb2O5材料层11、Au材料层12和MoO3材料层13可以以任意顺序设置,根据需要,阳极1还可能包括其他的材料层,本公开对此不做限定。
[根据细则26改正15.12.2015] 
本实施例中,有机发光显示器件不再采用ITO作为阳极材料,而是采用由Nb2O5、Au和MoO3组成的多层导电层作为阳极材料,避免了现有技术中由于采用ITO作为阳极材料而引起的微腔效应,使得发光显示器件的发光效率得到有效提升。
[根据细则26改正15.12.2015] 
图2示出了采用Nb2O5、Au和MoO3作为阳极材料和采用ITO作为阳极材料的有机发光显示器件的发光效率的效果对比图。图2中,横坐标表示电流密度,纵坐标表示电流效率(发光效率)。从图2中可以看出,采用Nb2O5、Au和MoO3作为阳极材料,相比于采用ITO作为阳极材料,在不同的电流密度下,有机发光显示器件的发光效率均得到明显提升。
在本公开的第二个实施例中,有机发光显示器件为白光有机发光显示器件。参见图3,有机发光层2包括层叠设置的第一发光层21和第二发光层22。第一发光层21用于发出绿光和红光;第二发光层22用于发出蓝光和黄光。
其中,第一发光层21和第二发光层22的上下位置可调整。进一步地,在一种实施方式中,参见图4,第一发光层21可以进一步包括层叠设置的绿光发光层211和红光发光层212;其中绿光发光层和红光发光层的上下位置可调整;第二发光层22可以进一步包括层叠设置的蓝光发光层221和黄光发光层222;其中蓝光发光层和黄光发光层的上下位置可调整。通过上面描述可见,第一发光层21发出绿光和红光,第二发光层22发出蓝 光和黄光,从而使得有机发光层2发出白光,也即使得有机发光显示器件成为白光有机发光显示器件。
本实施例中,有机发光层包括层叠设置的双发光层,即第一发光层和第二发光层,由第一发光层和第二发光层一起工作发出白光。相比于设置可以发出白光的单层发光层,本实施例有机发光层可以有效提高发光效率和发光亮度。
其中,在一种实施方式中,优选地,在所述第一发光层21和第二发光层22之间通过电荷产生层4进行连接,参见图5。
电荷产生层4不仅需要具有很好的电荷注入和生成作用,同时还需要在有机发光层的发光峰值处具有较高的透过率以降低吸收损耗。
一般地,电荷产生层4可以采用金属、非掺杂有机物、p型及n型掺杂构成的有机pn结或金属氧化物等制成。
第一发光层和第二发光层层叠设置,使得第一发光层和第二发光层内部的电流密度较低,因而可以有效地避免过剩电流作用导致的热猝灭效应,进一步提高有机发光层的电流效率、亮度和寿命。
在本公开的第三个实施例中,参见图6和图7,有机发光显示器件除了包括上述的阳极1、有机发光层2和阴极3之外,还包括:设置在阳极1或阴极3外的薄膜封装层30。
在阳极1或阴极3外设置薄膜封装层30,可以有效阻隔水氧渗入有机发光显示器件,满足了有机发光显示器件的封装性能,延长了有机发光显示器件的使用寿命。
在本公开的第四个实施例中,参见图8和图9,有机发光显示器件除了包括上述的阳极1、有机发光层2、阴极3和薄膜封装层30之外,还包括:
设于阳极1和有机发光层2之间的空穴传输层5;
设于阴极3和有机发光层2之间的电子传输层6;
设于空穴传输层5和阳极1之间的空穴注入层7;
设于电子传输层6和阴极3之间的电子注入层8;
设于有机发光层2和空穴传输层5之间的电子阻挡层9。
其中,图8为在基板(图中未示出)上先形成阳极1,后形成空穴注入层7、空穴传输层5、电子阻挡层9、有机发光层2、电子传输层6、电子注入层8和阴极3的有机发光显示器件的结构示意图;图9为在基板上先形成阴极3,后形成电子注入层8、电子传输层6、有机发光层2、电子阻挡层9、空穴传输层5、空穴注入层7和阳极1的有机发光显示器件的结构示意图。
其中,设置上述各层可改善电子和空穴的传输效率,从而提升有机发光显示器件的性能。
本公开的第五个实施例提供了一种显示装置,该显示装置包括上述实施例的有机发光显示器件。
本实施例提供的显示装置,由于包括了上述实施例的具有较高发光效率的有机发光显示器件,因此,该显示装置具有较好的显示性能。
其中,本实施例的显示装置可以为电子纸、手机、平板电脑、摄像机、照相机、电视机、数码相框和导航仪等任何具有显示功能的产品或部件。
图10和图11示出了本公开的第六个实施例提供的有机发光显示器件的制作方法的流程图,如图10和图11所示,有机发光显示器件的制作方法包括:
步骤101:在基板上形成阳极,阳极包括五氧化二铌材料层、金材料层和三氧化钼材料层。
在本步骤中,在基板上形成阳极包括:
采用真空蒸镀工艺形成五氧化二铌材料层、金材料层和三氧化钼材料层。其中,五氧化二铌材料层、金材料层和三氧化钼材料层可以以任意顺序设置,根据需要,阳极还可能包括其他的材料层,并且形成工艺也可采用本领域技术人员所知晓的其它工艺,本公开对此不做限定。
步骤102:在阳极上依次形成有机发光层和阴极。
或,
步骤101’:在基板上形成阴极。
步骤102’:在阴极上依次形成有机发光层和阳极,阳极包括五氧化二铌材料层、金材料层和三氧化钼材料层。
在本公开的第七个实施例中,上述有机发光层可以用于发出白光。有机发光层包括层叠设置的第一发光层和第二发光层,形成有机发光层包括:
形成第一发光层,该第一发光层用于发出绿光和红光;
在第一发光层上形成第二发光层,该第二发光层用于发出蓝光和黄光。
其中,第一发光层和第二发光层的上下位置可调整。
具体地,形成有机发光层包括:
A.由绿光发光材料和红光发光材料制成的第一发光层,该第一发光层用于发出绿光和红光。
在该步骤A中,第一发光层包括层叠设置的绿光发光层和红光发光层,其中绿光发光层和红光发光层的上下位置可调整。
其中,形成第一发光层包括:由绿光发光材料形成一层绿光发光层,在绿光发光层上采用红光发光材料形成一层红光发光层;
或,
由红光发光材料形成一层红光发光层,在红光发光层上采用绿光发光材料形成一层绿光发光层。
B.在第一发光层上由蓝光发光材料和黄光发光材料制成第二发光层,该第二发光层用于发出蓝光和黄光。
在该步骤B中,第二发光层包括层叠设置的蓝光发光层和黄光发光层,其中蓝光发光层和黄光发光层的上下位置可调整。
其中,形成第二发光层包括:由蓝光发光材料形成一层蓝光发光层,在蓝光发光层上采用黄光发光材料形成一层黄光发光层。
或,
由黄光发光材料形成一层黄光发光层,在黄光发光层上采用蓝光发光材料形成一层蓝光发光层。
进一步,在一种所述方式中,形成有机发光层还包括:
C.在第一发光层和第二发光层之间形成电荷产生层。
在该步骤C中,由于第一发光层和第二发光层之间优选地通过电荷产生层进行连接,因此需要在第一发光层和第二发光层之间形成电荷产生层。
所述电荷产生层不仅需要具有很好的电荷注入和生成作用,同时还需要在有机发光层的发光峰值处具有较高的透过率以降低吸收损耗。
一般地,电荷产生层可以采用金属、非掺杂有机物、p型及n型掺杂构成的有机pn结或金属氧化物等制成。
第一发光层和第二发光层层叠设置,使得第一发光层和第二发光层内部的电流密度较低,因而可以有效地避免过剩电流作用导致的热猝灭效应,进一步提高有机发光层的电流效率、亮度和寿命。
可见,相比于可以发出白光的单层发光层,本实施例所述包含双层发光层的有机发光层可以有效提高发光效率和发光亮度。
在本公开的第八个实施例中,有机发光显示器件的制作方法还包括:在基板上形成阳极、有机发光层和阴极之后,在阴极上形成薄膜封装层;或,
在基板上形成阴极、有机发光层和阳极之后,在阳极上形成薄膜封装层。
在本实施例中,在阳极或阴极外设置薄膜封装层,可以有效阻隔水氧渗入有机发光显示器件,满足了有机发光显示器件的封装性能,延长了有机发光显示器件的使用寿命。
在本公开的第九个实施例中,有机发光显示器件的制作方法还包括:
步骤201:在阳极上形成空穴注入层;
步骤202:在空穴注入层上依次形成空穴传输层、电子阻挡层、有机发光层、电子传输层、电子注入层和阴极。
或,
步骤201’:在阴极上形成电子注入层;
步骤202’:在电子注入层上依次形成电子传输层、有机发光层、电子阻挡层、空穴传输层、空穴注入层和阳极。
其中,设置上述空穴注入层、空穴传输层、电子阻挡层、电子传输层、 电子注入层可改善电子和空穴的传输效率,从而提升有机发光显示器件的性能。
本实施例中,阳极为包括Nb2O5、Au和MoO3的多层导电层结构的阳极结构。
采用本实施例的有机发光显示器件的制作方法,可以制作出阳极为Nb2O5、Au和MoO3的多层导电层的有机发光显示器件。相对于现有技术中阳极为ITO的有机发光显示器件,由于避免了采用ITO作为阳极材料而引起的微腔效应,因而可以使得有机发光显示器件的发光效率得到有效提升。
以上实施例仅用于说明本公开的技术方案,而非对其限制;尽管参照前述实施例对本公开进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或替换,并不使相应技术方案的本质脱离本公开各实施例技术方案的精神和范围。

Claims (16)

  1. 一种有机发光显示器件,包括阳极、有机发光层和阴极,其中,所述阳极包括五氧化二铌材料层、金材料层和三氧化钼材料层。
  2. 根据权利要求1所述的有机发光显示器件,其中,所述有机发光显示器件为白光有机发光显示器件。
  3. 根据权利要求2所述的有机发光显示器件,其中,所述有机发光层包括层叠设置的第一发光层和第二发光层;所述第一发光层用于发出绿光和红光;所述第二发光层用于发出蓝光和黄光。
  4. 根据权利要求3所述的有机发光显示器件,其中,所述第一发光层包括层叠设置的绿光发光层和红光发光层;所述第二发光层包括层叠设置的蓝光发光层和黄光发光层。
  5. 根据权利要求3所述的有机发光显示器件,其中,所述第一发光层和第二发光层之间设有电荷产生层。
  6. 根据权利要求1~5中的任一所述的有机发光显示器件,其中,所述有机发光显示器件还包括:设置在所述阳极或所述阴极外的薄膜封装层。
  7. 根据权利要求6所述的有机发光显示器件,其中,所述有机发光显示器件还包括:
    设于所述阳极和所述有机发光层之间的空穴传输层;
    设于所述阴极和所述有机发光层之间的电子传输层;
    设于所述空穴传输层和所述阳极之间的空穴注入层;
    设于所述电子传输层和所述阴极之间的电子注入层;
    设于所述有机发光层和所述空穴传输层之间的电子阻挡层。
  8. 一种显示装置,包括权利要求1~7中的任一所述的有机发光显示器件。
  9. 一种有机发光显示器件的制作方法,其中,包括:
    提供基板,在所述基板上形成阳极,所述阳极包括五氧化二铌材料层、 金材料层和三氧化钼材料层;
    在所述阳极上依次形成有机发光层和阴极;
    或,
    提供基板,在所述基板上形成阴极;
    在所述阴极上依次形成有机发光层和阳极,所述阳极包括五氧化二铌材料层、金材料层和三氧化钼材料层。
  10. 根据权利要求9所述的有机发光显示器件的制作方法,其中,在所述基板上形成阳极包括:
    采用真空蒸镀工艺形成五氧化二铌材料层、金材料层和三氧化钼材料层。
  11. 根据权利要求9所述的有机发光显示器件的制作方法,进一步包括,将所述有机发光层形成为用于发出白光。
  12. 根据权利要求11所述的有机发光显示器件的制作方法,进一步包括,将所述有机发光层形成为包括层叠设置的第一发光层和第二发光层;其中,
    所述第一发光层用于发出绿光和红光;
    所述第二发光层用于发出蓝光和黄光。
  13. 根据权利要求12所述的有机发光显示器件的制作方法,进一步包括,将所述第一发光层形成为包括层叠设置的绿光发光层和红光发光层;将所述第二发光层形成为包括层叠设置的蓝光发光层和黄光发光层。
  14. 根据权利要求12所述的有机发光显示器件的制作方法,还包括:在所述第一发光层和第二发光层之间形成电荷产生层。
  15. 根据权利要求9~14中的任一所述的有机发光显示器件的制作方法,其中,还包括:
    在所述基板上形成所述阳极、所述有机发光层和所述阴极之后,在所述阴极上形成薄膜封装层;
    或,
    在所述基板上形成所述阴极、所述有机发光层和所述阳极之后,在所 述阳极上形成薄膜封装层。
  16. 根据权利要求15所述的有机发光显示器件的制作方法,还包括:
    在所述阳极上形成空穴注入层;
    在所述空穴注入层上依次形成空穴传输层、电子阻挡层、有机发光层、电子传输层、电子注入层和所述阴极;
    或,
    在所述阴极上形成电子注入层;
    在所述电子注入层上依次形成电子传输层、有机发光层、电子阻挡层、空穴传输层和所述阳极。
PCT/CN2015/097259 2015-05-22 2015-12-14 有机发光显示器件及其制作方法和显示装置 WO2016188095A1 (zh)

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