WO2015090010A1 - 有机电致发光显示面板及其制造方法、显示装置 - Google Patents

有机电致发光显示面板及其制造方法、显示装置 Download PDF

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Publication number
WO2015090010A1
WO2015090010A1 PCT/CN2014/078944 CN2014078944W WO2015090010A1 WO 2015090010 A1 WO2015090010 A1 WO 2015090010A1 CN 2014078944 W CN2014078944 W CN 2014078944W WO 2015090010 A1 WO2015090010 A1 WO 2015090010A1
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layer
light
electrode layer
display panel
organic electroluminescent
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PCT/CN2014/078944
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English (en)
French (fr)
Inventor
程鸿飞
张玉欣
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京东方科技集团股份有限公司
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Priority to US14/435,399 priority Critical patent/US10199609B2/en
Publication of WO2015090010A1 publication Critical patent/WO2015090010A1/zh

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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/86Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/84Passivation; Containers; Encapsulations
    • H10K50/844Encapsulations
    • H10K50/8445Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/85Arrangements for extracting light from the devices
    • 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
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/122Pixel-defining structures or layers, e.g. banks
    • 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
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/32Stacked devices having two or more layers, each emitting at different wavelengths
    • 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
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/38Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • 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
    • 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
    • H10K50/80Constructional details
    • H10K50/84Passivation; Containers; Encapsulations
    • H10K50/844Encapsulations
    • 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
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/1201Manufacture or treatment
    • 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
    • H10K59/87Passivation; Containers; Encapsulations
    • H10K59/873Encapsulations

Definitions

  • Organic electroluminescence display panel manufacturing method thereof, and display device
  • the present invention relates to the field of display panel technologies, and in particular, to an organic electroluminescence display panel, a method of manufacturing the same, and a display device. Background technique
  • OLEDs have a self-luminous property that uses a very thin layer of organic material that illuminates when current is passed through it. OLEDs have the advantages of low power consumption, high brightness, fast response time, wide viewing angle, and light weight. Recently, they have been widely used in mobile communication terminals, personal digital assistants, and handheld computers.
  • Each pixel of the OLED is generally divided into three red, green and blue light-emitting units, each of which generates a monochromatic light, and then uses three kinds of monochromatic lights of red, green and blue to form light of various colors to realize OLED. Full color display of the panel.
  • the main object of the present invention is to provide an organic electroluminescence display panel, a manufacturing method thereof, and a display device, which can prevent mutual interference between light-emitting units of the OLED panel and improve the full-color display effect of the OLED.
  • the present invention provides an organic electroluminescence display panel, comprising: a plurality of light emitting units, each of the light emitting units comprising: a first electrode layer, an organic light emitting layer disposed on the first electrode layer, and an organic light emitting layer a second electrode layer on the layer, wherein an optical isolating member is disposed between the plurality of light emitting units for isolating light emitted by each of the light emitting units.
  • At least one of the first electrode layer, the organic light-emitting layer, and the second electrode layer of each of the light-emitting units is separated by the optical isolation member.
  • An organic electroluminescence display panel further comprising a substrate, wherein the plurality of light emitting units are disposed on the substrate, wherein the first electrode layer, the organic light emitting layer, and the first The two electrode layers are sequentially disposed on the substrate, and the first electrode layers of the respective light emitting units are disconnected from each other with the optical isolation member interposed therebetween.
  • the optical isolating member is protrudedly disposed between the respective light emitting units
  • the optical isolation member is prepared from an opaque polymer composite material.
  • the optical isolation member is fabricated from a black matrix material.
  • each of the light emitting units is continuously disposed on each of the light insulating members between each of the second electrode layers of the respective light emitting units and each of the light emitting units;
  • the organic light emitting layer is intermittently disposed over the second electrode between the respective light isolating members.
  • a passivation layer is further disposed on the second electrode layer, and a color filter layer is disposed on the passivation layer at a position opposite to the second electrode.
  • an encapsulation layer is further disposed on the color filter layer.
  • a color filter layer is disposed on the second electrode layer between each of the optical isolation members.
  • a passivation layer and an encapsulation layer are sequentially disposed on the second electrode layer.
  • the present invention provides a display device comprising any one of the above-described organic electroluminescent display panels provided by the above technical solution.
  • the present invention also provides a method of fabricating an organic electroluminescent display panel, comprising:
  • first electrode layer Forming a first electrode layer on the substrate, the first electrode layer comprising at least two second electrodes spaced apart from each other;
  • optical isolating member Forming an opaque optical isolating member between each of the second electrodes of the first electrode layer, the optical isolating member for isolating light emitted by each of the light emitting units to prevent the respective light emitting units from emitting light Interfere with each other;
  • An organic light-emitting layer and a second electrode layer are sequentially formed on the substrate on which the first electrode layer and the optical spacer are formed.
  • the optical isolation member is prepared from an opaque polymer composite material.
  • the optical isolation member is made of a black matrix material.
  • the sequentially forming the organic light-emitting layer and the second electrode layer on the substrate on which the first electrode layer and the optical isolation member are formed specifically includes: Forming a continuous organic light emitting layer on the substrate on which the first electrode layer and the optical isolating member are formed, the organic light emitting layer being continuously formed in each of the second electrodes and each of the optical isolating members Up; or
  • the organic light-emitting layer Forming a discontinuous organic light-emitting layer on the substrate on which the first electrode layer and the optical isolation member are formed, the organic light-emitting layer intermittently forming the second electrode between each of the optical isolation members Above.
  • the method further includes:
  • a color filter layer is formed at a position opposite the second electrode over the passivation layer.
  • the method further includes:
  • An encapsulation layer is formed over the color filter layer.
  • the method further includes: after sequentially forming the organic light-emitting layer and the second electrode layer on the substrate on which the first electrode layer and the optical isolation member are formed, the method further includes:
  • a color filter layer is formed over the second electrode layer between each of the optical isolation members.
  • the method further includes:
  • a passivation layer and an encapsulation layer are sequentially disposed on the color filter layer.
  • the organic electroluminescence display panel and the manufacturing method thereof and the display device provided by the embodiments of the present invention are provided with optical isolating members between the respective light emitting units, so that the respective optical isolating members can effectively isolate the organic light emitting layers emitted from the respective light emitting units. Light, to prevent mutual interference of light emission between the respective light-emitting units, thereby improving the full-color display effect of the OLED display panel.
  • FIG. 1 is a schematic structural diagram of an organic electroluminescence display panel according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of another organic electroluminescent display panel according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of another organic electroluminescent display panel according to an embodiment of the present invention.
  • Fig. 4 is a flow chart showing a method of manufacturing an organic electroluminescence display panel according to an embodiment of the invention. detailed description
  • an embodiment of the present invention provides an organic electroluminescent OLED display panel, including a substrate 1, a first electrode layer 2, an organic light-emitting layer 3, and a second electrode, which are sequentially disposed on the substrate 1.
  • Layer 4 the first electrode layer 2 includes at least two second electrodes spaced apart from each other, each second electrode, an organic light-emitting layer 3 facing each second electrode, and a second opposite each second electrode
  • the electrode layer 4 constitutes one light-emitting unit. For example, as shown in FIG.
  • each broken-line frame can be regarded as one light-emitting unit; wherein, between the second electrodes of the first electrode layer 2, there is no A light-transmitting optical isolating member 9 for use as shown in FIGS. 1-3, the optical isolating member 9 being projectingly disposed between the respective light-emitting units to isolate light emitted by the respective light-emitting units.
  • each of the second electrodes, the organic light-emitting layer 3 facing each second electrode, and the second electrode layer 4 facing each second electrode constitute one light-emitting unit
  • An opaque optical isolating member 9 is disposed between each of the second electrodes, so that the opaque optical isolating members 9 can effectively isolate the light emitted by the organic luminescent layer 3 in each of the illuminating units to prevent the respective illuminating units.
  • the mutual luminescence interferes with each other, thereby improving the full-color display effect of the OLED display panel.
  • the optical isolation member 9 is a protrusion disposed between each of the second electrodes, and is mainly prepared by an opaque material, and specifically, may be Prepared from opaque polymer composites, such as black matrix materials.
  • the optical isolating member 9 can function to isolate the light emitted by each of the light emitting units, and can also function as a positioning. The positioning function will be described in detail below.
  • the OLED display panel may further include a thin film transistor layer 8 disposed between the substrate 1 and the first electrode layer 2.
  • Each of the thin film transistor layers 8 corresponds to a second electrode.
  • the second electrode can be charged and discharged. Therefore, each of the light emitting units is controlled by a TFT having a switching function, so that each of the light emitting units of the OLED display panel can be independently and selectively adjusted; specifically, the thin film transistor layer 8 passes Controlling the second electrode to control each of the light-emitting units is known in the prior art, and the present invention will not be described in detail herein.
  • the second electrode in the first electrode layer 2 is connected to the power positive electrode, and the second electrode layer 4 is connected to the power negative electrode, and when the power is supplied to an appropriate voltage, the second electrode
  • the positive electrode holes in the cathode and the cathode charges in the second electrode layer 4 meet and combine in the organic light-emitting layer 3, and excite the organic material in the organic light-emitting layer 3 to generate light.
  • each of the second electrodes in the first electrode layer 2 may select a high work function material to suit the generation of holes.
  • an indium tin oxide ITO or an indium oxide oxide IZO transparent conductive film material having semiconductor characteristics may be selected.
  • the second electrode layer 4 may select a low power function material to suit the generation of electrons, for example, a metal material such as silver, aluminum, magnesium, calcium, barium, or the like, or a composite metal material such as magnesium-silver may be selected; preferably, The second electrode layer 4 is transparent. At present, the fabrication of the transparent metal material is already prior art. Therefore, the embodiment of the present invention will not describe in detail how to prepare the transparent second electrode layer 4.
  • an appropriate material may be selected as the organic light-emitting layer 3 or a dye may be doped in the organic light-emitting layer 3 to obtain a desired light-emitting color.
  • every three adjacent light-emitting units can emit red light, green light, and blue light, respectively, so that light of these three colors can be displayed; accordingly, red, green, and blue light are emitted.
  • the organic light-emitting layer 3 in the unit can select materials that emit red, green, and blue light, respectively.
  • the organic light-emitting layer 3 can select a material having strong fluorescence, good carrier transport performance, thermal stability, and chemical stability in a solid state.
  • a green-emitting material can be selected from tris(8-hydroxyquinoline).
  • Aluminum A1Q 3 in addition, by doping the host luminescent material, a material that emits red light and blue light can be obtained.
  • a material which emits blue light can be obtained by doping A1Q 3 in NPB, and the prior art can already be doped by means of doping or the like.
  • a material that emits red light, blue light, and white light is not described in detail in the embodiments of the present invention.
  • the organic light-emitting layer 3 can also select a material that can emit white light, and then pass the color
  • the color filter film obtains three primary colors, and then combines the three primary colors to realize color display.
  • a passivation layer 6 may be disposed on the second electrode layer 4 to protect the second electrode layer 4 from being insulated from other substances, and then on the passivation layer 6 and second.
  • a color filter layer 5 is disposed at a position where the electrodes face each other.
  • the color filter layer 5 is composed of a plurality of sets of discontinuous color filters, and does not include a black matrix, and each of the color filters includes red, green, and blue filters, respectively.
  • the light-emitting units in which they are placed emit red, green and blue light.
  • the white light emitted by the organic light-emitting layer 3 passes through each set of color filters, and then red, green, and blue primary colors are generated, and then mixed into a color to realize full-color display.
  • the specific material of the passivation layer 6 is not limited in the embodiment of the present invention.
  • the passivation layer 6 may be a polymer material such as a resin, or an inorganic non-metal material such as silicon nitride SiN or silicon oxide SiO 2 .
  • the opaque optical isolating member 9 since the opaque optical isolating member 9 has been used to isolate the light emitted by each of the light emitting units, it is not required between the color filters in the color filter layer 5.
  • the black matrix is further disposed, thereby making the structure of the OLED display panel simpler, and the process of preparing the black matrix is saved, the preparation process is effectively simplified, and the manufacturing cost is saved.
  • the organic light-emitting layer 3 may be continuously disposed on the first electrode layer 2 as shown in FIG. 1 and FIG. 2, that is, continuously disposed on each of the second electrodes and the respective optical isolation members. 9; above, as shown in FIG. 3, intermittently disposed on the first electrode layer 2, that is, intermittently disposed on the second electrode between the respective optical isolating members 9.
  • the organic light-emitting layer can be ensured
  • the light emitted from the third electrode layer 4 is emitted through the color filter layer 5, which is not limited in the present invention.
  • the second electrode layer 4 may be continuously disposed on the organic light-emitting layer 3 as shown in FIG. 1-3; or may be intermittently disposed on the organic light-emitting layer 3, that is, intermittently disposed.
  • the present invention is not limited as long as it can ensure that the light emitted from the organic light-emitting layer 3 is emitted through the second electrode layer 4 through the color filter layer 5.
  • an encapsulation layer 7 may be further disposed on the color filter layer 5 to prevent erosion of the second electrode layer 4 or the organic light-emitting layer 3 by water or oxygen.
  • the specific material of the encapsulation layer 7 is not limited in the embodiment of the present invention.
  • the encapsulation layer 7 may be an inorganic non-metal material such as silicon nitride SiN or silicon oxide SiO 2 , or may be a polymer material such as a resin.
  • the first electrode layer 2 may be provided with a reflective layer on the side close to the substrate 1 (not Shown, for example, a metal layer; thus, white light emitted by the organic light-emitting layer 3 will pass through the second electrode layer 4 through the color filter layer 5, or under the reflection of the reflective layer, will pass through the second electrode The layer 4 is emitted through the color filter layer 5.
  • the color filter layer 5 may be directly disposed on the second electrode layer 4 between the respective optical isolation members 9, and then A passivation layer 6 and an encapsulation layer 7 are sequentially disposed on the color filter layer 5.
  • each color filter in the color filter layer 5 is disposed only on the second electrode layer 4 between the respective optical isolation members 9, so that the optical isolation member 9 also functions as a positioning, that is, is set.
  • the second electrode layer 4 it is only necessary to provide individual filters in the recesses between the respective optical isolating members 9, at which time the optical isolating members 9 are convex relative to the second electrodes, so that they are well positioned. effect.
  • the embodiment of the present invention further provides a display device, including any of the organic electroluminescent display panels provided by the above embodiments, and thus all the technical effects described above can be achieved, and the present invention no longer Narration.
  • an embodiment of the present invention further provides a method for manufacturing an organic electroluminescence display panel, which includes the following steps:
  • first electrode layer on the substrate, the first electrode layer comprising at least two second electrodes spaced apart from each other;
  • the optical isolating member is configured to isolate light emitted by each of the light emitting units to prevent the respective light emitting units Illumination interferes with each other;
  • An organic light-emitting layer and a second electrode layer are sequentially formed on the substrate on which the first electrode layer and the optical isolation member are formed.
  • each of the second electrodes, the organic light emitting layer facing each of the second electrodes, and the second electrode layer facing each of the second electrodes constitute a light emitting unit.
  • the optical isolation member is prepared from an opaque polymer composite.
  • the optical isolation member is made of a black matrix material.
  • the sequentially forming the organic light-emitting layer and the second electrode layer on the substrate on which the first electrode layer and the optical isolation member are formed, as described in the above step S3, specifically includes:
  • the method further includes:
  • the method further includes:
  • the method further includes:
  • the method further includes:
  • a passivation layer and an encapsulation layer are sequentially disposed on the color filter layer.
  • each of the second electrodes, the organic light emitting layer facing each second electrode, and the second electrode layer facing each second electrode constitute a light emitting unit.
  • opaque optical isolating members are disposed between the respective second electrodes, so that the opaque optical isolating members can effectively isolate the light emitted by the organic light emitting layers in the respective light emitting units to prevent between the respective light emitting units. The luminescence interferes with each other, thereby improving the full-color display effect of the OLED display panel.
  • the optical isolation members are disposed between the first electrode layers 2 of the respective light emitting units
  • the optical isolation members may be disposed between the second electrodes 4 or the organic light emitting layers 3 of the respective light emitting units, As long as the optical isolating member can isolate the light emitted by each of the light emitting units. Therefore, the scope of the invention should be determined by the scope of the claims.

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  • Optics & Photonics (AREA)
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Abstract

一种有机电致发光显示面板及其制造方法、显示装置。有机电致发光显示面板包括多个发光单元,其中在多个发光单元之间设置有光隔离构件(9),用于隔离各个发光单元发出的光。因此,有机电致发光显示面板及其制造方法、显示装置,能够防止有机电致发光显示面板的各个发光单元之间发光的互相干扰。

Description

有机电致发光显示面板及其制造方法、 显示装置 技术领域
本发明涉及显示面板技术领域, 尤其涉及一种有机电致发光显示 面板及其制造方法、 显示装置。 背景技术
有机电致发光显示器 OLED具有自发光的特性, 它釆用非常薄的 有机材料层, 当有电流通过时, 这些有机材料就会发光。 OLED具有能 耗低、 亮度高、 反应时间快、 视角宽、 重量轻等优点, 近来已普遍应 用于移动通信终端、 个人数字助理、 掌上电脑等方面。
OLED的每个像素通常分为红绿蓝三个发光单元,每个发光单元对 应的产生一种单色光, 再利用红绿蓝三种单色光混合形成各种颜色的 光, 以实现 OLED面板的全彩色化显示。
然而, OLED面板的各个发光单元之间经常发生发光互相干扰的现 象, 往往会导致彩色化效果不佳, 影响 OLED 面板的全彩色化显示效 果。 发明内容
本发明的主要目的在于, 提供一种有机电致发光显示面板及其制 造方法、 显示装置, 能够防止 OLED 面板的各个发光单元之间发光互 相干扰, 提高 OLED的全彩色化显示效果。
为达到上述目的, 本发明釆用如下技术方案:
一方面, 本发明提供了一种有机电致发光显示面板, 包括: 多个 发光单元, 每个发光单元包括: 第一电极层、 设置在第一电极层上的 有机发光层以及设置在有机发光层上的第二电极层, 其中, 在所述多 个发光单元之间设置有光隔离构件, 用于隔离各个所述发光单元发出 的光。
在根据一个实施例的有机电致发光显示面板中, 各个发光单元的 第一电极层、 有机发光层和第二电极层中的至少一层由所述光隔离构 件隔开。
根据一个实施例的有机电致发光显示面板, 还包括基板, 所述多 个发光单元设置在所述基板上, 其中, 第一电极层、 有机发光层及第 二电极层依次设置在所述基板上, 并且, 各个发光单元的第一电极层 相互断开设置, 其间设有所述光隔离构件。
根据一个实施例, 所述光隔离构件突出地设置在各个发光单元之 间
可选的, 所述光隔离构件由不透光的高分子复合材料制备。
可选地, 所述光隔离构件由黑矩阵材料制备。
进一步地, 各个发光单元的所述有机发光层连续的设置在各个发 光单元的各个所述第二电极层和各个发光单元之间的各个所述光隔离 构件之上; 或者
所述有机发光层间断的设置在各个所述光隔离构件之间的所述第 二电极之上。
可选地, 所述第二电极层之上还设有钝化层, 所述钝化层之上与 所述第二电极正对的位置处设置有彩色滤光膜层。
可选地, 所述彩色滤光膜层之上还设置有封装层。
或者进一步地, 各个所述光隔离构件之间的所述第二电极层之上 设置有彩色滤光膜层。
可选地, 所述第二电极层之上依次设有钝化层、 封装层。
另一方面, 本发明还提供了一种显示装置, 包括上述技术方案提 供的任何一种所述的有机电致发光显示面板。
另一方面, 本发明还提供了一种有机电致发光显示面板的制造方 法, 包括:
在基板上形成第一电极层, 所述第一电极层包括至少两个相互间 隔的第二电极;
在所述第一电极层的各个所述第二电极之间形成不透光的光隔离 构件, 所述光隔离构件用于隔离各个所述发光单元发出的光以防止所 述各个发光单元发光的互相干扰;
在形成有所述第一电极层及所述光隔离构件的基板上依次形成有 机发光层及第二电极层。
可选的, 所述光隔离构件由不透光的高分子复合材料制备。
优选地, 所述光隔离构件由黑矩阵材料制备。
具体地, 所述在形成有所述第一电极层及所述光隔离构件的基板 上依次形成有机发光层及第二电极层具体包括: 在形成有所述第一电极层及所述光隔离构件的基板上形成一层连 续的有机发光层, 所述有机发光层连续的形成在各个所述第二电极和 各个所述光隔离构件之上; 或者
在形成有所述第一电极层及所述光隔离构件的基板上形成一层间 断的有机发光层, 所述有机发光层间断的形成在各个所述光隔离构件 之间的所述第二电极之上。
进一步地, 在形成有所述第一电极层及所述光隔离构件的基板上 依次形成有机发光层及第二电极层之后, 所述方法还包括:
在所述第二电极层之上形成钝化层;
在所述钝化层之上与所述第二电极正对的位置处形成彩色滤光膜 层。
可选地, 在所述钝化层之上与所述第二电极对应的位置处形成彩 色滤光膜层之后, 所述方法还包括:
在所述彩色滤光膜层之上形成封装层。
或者进一步地, 在形成有所述第一电极层及所述光隔离构件的基 板上依次形成有机发光层及第二电极层之后, 所述方法还包括:
在各个所述光隔离构件之间的所述第二电极层之上形成彩色滤光 膜层。
可选地, 在各个所述光隔离构件之间的所述第二电极层之上形成 彩色滤光膜层之后, 所述方法还包括:
所述彩色滤光膜层之上依次设有钝化层、 封装层。
本发明实施例提供的有机电致发光显示面板及其制造方法、 显示 装置, 各个发光单元之间设置有光隔离构件, 这样, 各个光隔离构件 可以有效地隔离各个发光单元中有机发光层发出的光, 以防止各个发 光单元之间发光的互相干扰, 从而提高 OLED显示面板的全彩色化显 示效果。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面 将对实施例或现有技术描述中所需要使用的附图作简单地介绍, 显而 易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于本领域 普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这 些附图获得其他的附图。 图 1 为本发明实施例提供的一种有机电致发光显示面板的结构示 意图;
图 2 为本发明实施例提供的另一种有机电致发光显示面板的结构 示意图;
图 3 为本发明实施例提供的另一种有机电致发光显示面板的结构 示意图;
图 4 为发明实施例提供的有机电致发光显示面板的制造方法流程 图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方 案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明的一 部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域 普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施 例, 都属于本发明保护的范围。
如图 1〜图 3所示, 本发明实施例提供了一种有机电致发光 OLED 显示面板, 包括基板 1、 依次设在基板 1上的第一电极层 2、 有机发光 层 3及第二电极层 4 ,第一电极层 2包括至少两个相互间隔的第二电极, 每个第二电极、 与每个第二电极正对的有机发光层 3 以及与每个第二 电极正对的第二电极层 4构成一个发光单元, 例如, 如图 1 所示, 每 个虚线框表示的区域即可看作是一个发光单元; 其中, 在第一电极层 2 的各个第二电极之间设有不透光的光隔离构件 9 ,该光隔离构件 9用于 如图 1-3所示,所述光隔离构件 9突出地设置在各个发光单元之间 , 以隔离各个发光单元发出的光。
本发明实施例提供的 OLED显示面板, 每个第二电极、 与每个第 二电极正对的有机发光层 3 以及与每个第二电极正对的第二电极层 4 构成一个发光单元, 并且在各个第二电极之间设置有不透光的光隔离 构件 9 , 这样, 各个不透光的光隔离构件 9可以有效地隔离各个发光单 元中有机发光层 3 发出的光, 以防止各个发光单元之间发光的互相干 扰, 从而提高 OLED显示面板的全彩色化显示效果。
需要说明的是, 本发明实施例所述的光隔离构件 9 为设置在各个 第二电极之间的凸起物, 主要是由不透光材料制备, 具体地, 可以是 由不透光的高分子复合材料制备, 比如黑矩阵材料制备。 光隔离构件 9 能起到隔离各个发光单元发出光的作用, 还能起到定位的作用, 关于 定位作用将在下文进行详细描述。
如图 1〜图 3所示, OLED显示面板还可以包括设置在基板 1与第 一电极层 2之间的薄膜晶体管层 8 ,薄膜晶体管层 8中的每个薄膜晶体 管 TFT均对应一个第二电极, 能够对第二电极进行充放电控制, 因而, 每个发光单元均由具有开关功能的 TFT控制, 这样能够对 OLED显示 面板的各个发光单元进行独立选择性调节; 具体地, 薄膜晶体管层 8 通过控制第二电极从而控制每个发光单元为现有技术, 本发明对此不 再详细 4 述。
具体地, 本发明实施例提供的 OLED显示面板中, 第一电极层 2 中的第二电极与电力正极相连, 第二电极层 4 与电力负极相连, 当电 力供应至适当电压时, 第二电极中的正极空穴与第二电极层 4 中的阴 极电荷会在有机发光层 3 中相遇、 结合, 并激发有机发光层 3 中的有 机材料产生光亮。 具体地, 第一电极层 2 中的各个第二电极可以选择 高功函数材料, 以适合空穴的产生, 例如可以选择具有半导体特性的 铟锡氧化物 ITO或铟辞氧化物 IZO透明导电膜材料; 第二电极层 4可 以选择低功率函数材料, 以适合电子的产生, 例如可以选择银、 铝、 镁、 钙、 钡等金属材料, 或者选择如镁-银等复合金属材料; 优选地, 第二电极层 4为透明的, 目前, 透明金属材料的制作已经是现有技术, 因此本发明实施例对如何制备透明第二电极层 4不再详细描述。
OLED显示面板中,可以选择适当的材料作为有机发光层 3或在有 机发光层 3 中掺杂染料以得到所需的发光颜色。 例如, 每三个相邻的 发光单元可以分别发红光、 绿光和蓝光, 这样, 通过这三种颜色的光 便可显示出彩色; 因而相应地, 发红光、 绿光和蓝光的发光单元中有 机发光层 3可以分别选择发红光、 绿光和蓝光的材料。
具体地, 有机发光层 3 可以选择固态下具有较强荧光、 载子传输 性能好、 热稳定性和化学稳定性佳的材料, 比如, 发绿光的材料可以 选择三 (8-羟基喹啉) 铝 A1Q3 , 另外, 通过给主体发光材料掺杂, 可 以得到发红光和蓝光的材料,例如在 NPB中掺杂 A1Q3可以得到发蓝光 的材料, 目前现有技术已经可以通过掺杂等方式获得发红光、 蓝光及 白光的材料, 本发明实施例对此不再详细描述。
当然, 有机发光层 3 也可以选择可以发白光的材料, 然后通过彩 色滤光膜得到三基色, 再结合三基色实现彩色显示。 例如, 如图 1 所 示, 可以先在第二电极层 4之上设置钝化层 6 , 以保护第二电极层 4使 其与其他物质绝缘, 然后再在钝化层 6 之上与第二电极正对的位置处 设置彩色滤光膜层 5。 其中, 彩色滤光膜层 5由多组不连续的彩色滤光 片组成, 而不包括黑矩阵, 且每组彩色滤光片分别包括红、 绿、 蓝三 种颜色的滤光片, 分别可以使它们所在的发光单元发红光、 绿光和蓝 光。 这样, 有机发光层 3 发出的白光, 通过每组彩色滤光片后将产生 红绿蓝三基色, 然后混合成彩色从而实现全彩色化显示。 具体地, 本 发明实施例对钝化层 6 的具体材料不作限制, 例如钝化层 6可以为树 脂等高分子材料,或者为氮化硅 SiN或氧化硅 Si02等无机非金属材料。
本发明实施例提供的 OLED显示面板,由于不透光的光隔离构件 9 已经起到了隔离各个发光单元发出的光的作用, 因而彩色滤光膜层 5 中的各个彩色滤光片之间不需要再设置黑矩阵, 从而使 OLED显示面 板结构更加简单, 并且节省了制备黑矩阵的工序, 有效地简化了制备 工艺, 节省了制造成本。
需要说明的是, 本发明实施例中, 有机发光层 3可以如图 1和图 2 所示连续的设置在第一电极层 2 之上, 即连续的设置在各个第二电极 和各个光隔离构件 9之上; 也可以如图 3所示间断的设置在第一电极 层 2之上, 即间断的设置在各个光隔离构件 9之间的第二电极之上, 总之, 只要能保证有机发光层 3发出的光能穿过第二电极层 4通过彩 色滤光膜层 5射出即可, 本发明对此不作限定。
类似地, 本发明实施例中, 第二电极层 4可以如图 1-3所示连续的 设置在有机发光层 3之上; 也可以间断地设置在有机发光层 3之上, 即间断地设置在各个光隔离构件 9之间的有机发光层 3之上。 总之, 只要能保证有机发光层 3发出的光能穿过第二电极层 4通过彩色滤光 膜层 5射出即可, 本发明对此不作限定。
另外,如图 1所示,在彩色滤光膜层 5之上还可以设置有封装层 7 , 以防止水或氧气对第二电极层 4或有机发光层 3 的侵蚀。 具体地, 本 发明实施例对封装层 7 的具体材料不作限制, 例如封装层 7可以为氮 化硅 SiN或氧化硅 Si02等无机非金属材料, 也可以为树脂等高分子材 料。
优选地, 为了让有机发光层 3 发出的白光尽可能多的通过彩色滤 光膜层 5射出,第一电极层 2靠近基板 1的一侧还可以设有反射层(未 示出) , 比如金属层; 这样, 有机发光层 3 发出的白光将直接穿过第 二电极层 4通过彩色滤光膜层 5射出, 或者在反射层的反射作用下, 将穿过第二电极层 4通过彩色滤光膜层 5射出。
需要说明的是, 本发明实施例中, 如图 2和图 3 所示, 彩色滤光 膜层 5也可以直接设置在各个光隔离构件 9之间的第二电极层 4之上, 然后再在彩色滤光膜层 5之上依次设置钝化层 6及封装层 7。 此时, 彩 色滤光膜层 5 中的各个彩色滤光片只设置在各个光隔离构件 9之间的 第二电极层 4之上, 因而光隔离构件 9还起到了定位的作用, 即设置 好第二电极层 4之后, 只需在各个光隔离构件 9之间的凹处设置各个 滤光片即可, 此时光隔离构件 9 相对于第二电极为凸起, 因而很好的 起到了定位的作用。
相应地, 本发明实施例还提供了一种显示装置, 包括上述实施例 提供的任何一种有机电致发光显示面板, 因而也能达到上文所述的所 有技术效果, 本发明对此不再赘述。
另一方面, 如图 4 所示, 本发明实施例还提供了一种有机电致发 光显示面板的制造方法, 包括如下步骤:
51、 在基板上形成第一电极层, 所述第一电极层包括至少两个相 互间隔的第二电极;
52、 在所述第一电极层的各个所述第二电极之间形成不透光的光 隔离构件, 所述光隔离构件用于隔离各个所述发光单元发出的光以防 止所述各个发光单元发光的互相干扰;
53、 在形成有所述第一电极层及所述光隔离构件的基板上依次形 成有机发光层及第二电极层。
需要说明的是, 本发明实施例中, 每个第二电极、 与所述每个第 二电极正对的有机发光层以及与所述每个第二电极正对的第二电极层 构成一个发光单元。
可选地, 所述光隔离构件由不透光的高分子复合材料制备。
优选地, 所述光隔离构件由黑矩阵材料制备。
具体地, 上述 S3步骤所述的在形成有所述第一电极层及所述光隔 离构件的基板上依次形成有机发光层及第二电极层具体包括:
S31、 在形成有所述第一电极层及所述光隔离构件的基板上形成一 层连续的有机发光层, 所述有机发光层连续的形成在各个所述第二电 极和各个所述光隔离构件之上; 或者 S32、 在形成有所述第一电极层及所述光隔离构件的基板上形成一 层间断的有机发光层, 所述有机发光层间断的形成在各个所述光隔离 构件之间的所述第二电极之上。
进一步地, 在上述 S3步骤的在形成有所述第一电极层及所述光隔 离构件的基板上依次形成有机发光层及第二电极层之后, 所述方法还 包括:
S41、 在所述第二电极层之上形成钝化层;
551、 在所述钝化层之上与所述第二电极对应的位置处形成彩色滤 光膜层。
可选地, 在上述 S51 步骤的在所述钝化层之上与所述第二电极对 应的位置处形成彩色滤光膜层之后, 所述方法还包括:
S61、 在所述彩色滤光膜层之上形成封装层。
或者, 进一步地, 在上述 S3步骤的在形成有所述第一电极层及所 述光隔离构件的基板上依次形成有机发光层及第二电极层之后, 所述 方法还包括:
S 42、 在各个所述光隔离构件之间的所述第二电极层之上形成彩色 滤光膜层。
可选地, 在 S42 步骤的在各个所述光隔离构件之间的所述第二电 极层之上形成彩色滤光膜层之后, 所述方法还包括:
552、 所述彩色滤光膜层之上依次设有钝化层、 封装层。
本发明实施例提供的 OLED显示面板的制造方法,每个第二电极、 与每个第二电极正对的有机发光层以及与每个第二电极正对的第二电 极层构成一个发光单元, 并且在各个第二电极之间设置有不透光的光 隔离构件, 这样, 各个不透光的光隔离构件可以有效地隔离各个发光 单元中有机发光层发出的光, 以防止各个发光单元之间发光的互相干 扰, 从而提高 OLED显示面板的全彩色化显示效果。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并 不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范 围内, 可轻易想到变化或替换, 都应涵盖在本发明的保护范围之内。
例如, 虽然上述实施例描述了光隔离构件设置在各个发光单元的 第一电极层 2 之间, 但是, 光隔离构件也可以设置在各个发光单元的 第二电极 4或有机发光层 3之间, 只要光隔离构件能够隔离各个发光 单元发出的光即可。 因此, 本发明的保护范围应所述以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种有机电致发光显示面板, 包括: 多个发光单元, 每个发光 单元包括: 第一电极层、 设置在第一电极层上的有机发光层以及设置 在有机发光层上的第二电极层, 其中, 在所述多个发光单元之间设置 有光隔离构件, 用于隔离各个所述发光单元发出的光。
2、 根据权利要求 1所述的有机电致发光显示面板, 其中, 各个发 光单元的第一电极层、 有机发光层和第二电极层中的至少一层由所述 光隔离构件隔开。
3、 根据权利要求 2所述的有机电致发光显示面板, 还包括基板, 所述多个发光单元设置在所述基板上, 其中, 第一电极层、 有机发光 层及第二电极层依次设置在所述基板上, 并且, 各个发光单元的第一 电极层相互断开设置, 其间设有所述光隔离构件第一电极层第二电极 层第一电极层第二电极层第一电极层。
4、 根据权利要求 3所述的有机电致发光显示面板, 其中, 所述光 隔离构件突出地设置在各个发光单元之间。
5、 根据权利要求 1所述的有机电致发光显示面板, 其特征在于, 所述光隔离构件由不透光的高分子复合材料制备。
6、 根据权利要求 1所述的有机电致发光显示面板, 其特征在于, 所述光隔离构件由黑矩阵材料制备。
7、 根据权利要求 1 -6任一项所述的有机电致发光显示面板, 其特 电极层和在各个发光单元之间的各个所述光隔离构件之上连续地设 置; 或者 件之间的所述第一电极层之上。
8、 根据权利要求 -3-6任一项所述的有机电致发光显示面板, 其特 征在于, 所述第二电极层之上还设有钝化层, 所述钝化层之上与所述 第一电极层正对的位置处设置有彩色滤光膜层。
9、 根据权利要求 8所述的有机电致发光显示面板, 其特征在于, 所述彩色滤光膜层之上还设置有封装层。
10、根据权利要求 3-6任一项所述的有机电致发光显示面板, 其特 征在于, 各个所述光隔离构件之间的所述第二电极层之上设置有彩色 滤光膜层。
11、根据权利要求 10所述的有机电致发光显示面板,其特征在于, 所述彩色滤光膜层之上依次设有钝化层、 封装层。
12、 一种显示装置, 其特征在于, 包括权利要求 1-11任一项所述 的有机电致发光显示面板。
13、 一种有机电致发光显示面板的制造方法, 其特征在于, 包括: 在基板上形成第一电极层, 所述第一电极层包括至少两个相互间 隔的第二电极;
在所述第一电极层的各个所述第二电极之间形成光隔离构件, 所 述光隔离构件用于隔离各个发光单元发出的光;
在形成有所述第一电极层及所述光隔离构件的基板上依次形成有 机发光层及第二电极层。
14、 根据权利要求 13所述的有机电致发光显示面板的制造方法, 其特征在于, 所述光隔离构件由不透光的高分子复合材料制备。
15、 根据权利要求 13所述的有机电致发光显示面板的制造方法, 其特征在于, 所述光隔离构件由黑矩阵材料制备。
16、根据权利要求 13-15任一项所述的有机电致发光显示面板的制 造方法, 其特征在于, 所述在形成有所述第一电极层及所述光隔离构 件的基板上依次形成有机发光层及第二电极层具体包括:
在形成有所述第一电极层及所述光隔离构件的基板上形成一层连 续的有机发光层, 所述有机发光层连续地形成在各个所述第二电极和 各个所述光隔离构件之上; 或者
在形成有所述第一电极层及所述光隔离构件的基板上形成一层间 之间的所述第二电极之上。
17、根据权利要求 13-15任一项所述的有机电致发光显示面板的制 造方法, 其特征在于, 在形成有所述第一电极层及所述光隔离构件的 基板上依次形成有机发光层及第二电极层之后, 所述方法还包括:
在所述第二电极层之上形成钝化层;
在所述钝化层之上与所述第二电极正对的位置处形成彩色滤光膜 层。
18、 根据权利要求 17所述的有机电致发光显示面板的制造方法, 其特征在于, 在所述钝化层之上与所述第二电极对应的位置处形成彩 色滤光膜层之后, 所述方法还包括:
在所述彩色滤光膜层之上形成封装层。
19、根据权利要求 13-15任一项所述的有机电致发光显示面板的制 造方法, 其特征在于, 在形成有所述第一电极层及所述光隔离构件的 基板上依次形成有机发光层及第二电极层之后, 所述方法还包括: 在各个所述光隔离构件之间的所述第二电极层之上形成彩色滤光 膜层。
20、 根据权利要求 19所述的有机电致发光显示面板的制造方法, 其特征在于, 在各个所述光隔离构件之间的所述第二电极层之上形成 彩色滤光膜层之后, 所述方法还包括:
所述彩色滤光膜层之上依次设有钝化层、 封装层。
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