WO2020107724A1 - Oled显示面板 - Google Patents

Oled显示面板 Download PDF

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Publication number
WO2020107724A1
WO2020107724A1 PCT/CN2019/075641 CN2019075641W WO2020107724A1 WO 2020107724 A1 WO2020107724 A1 WO 2020107724A1 CN 2019075641 W CN2019075641 W CN 2019075641W WO 2020107724 A1 WO2020107724 A1 WO 2020107724A1
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WIPO (PCT)
Prior art keywords
layer
pixel definition
transparent
transparent area
display panel
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Ceased
Application number
PCT/CN2019/075641
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English (en)
French (fr)
Inventor
唐岳军
李雪云
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US16/467,042 priority Critical patent/US10854695B2/en
Publication of WO2020107724A1 publication Critical patent/WO2020107724A1/zh
Anticipated expiration legal-status Critical
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    • 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
    • H10K59/124Insulating layers formed between TFT elements and OLED elements
    • 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
    • H10K59/121Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • 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
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/126Shielding, e.g. light-blocking means over the TFTs
    • 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
    • H10K59/8791Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers

Definitions

  • the invention relates to the field of display technology, in particular to an OLED display panel.
  • Organic light emitting display OLED
  • OLED Organic Light Emitting Display
  • the OLED display panel belongs to a self-emission display device, and generally includes a pixel electrode used as one of an anode and a cathode, a common electrode used as the other of the anode and the cathode, and organic light emitting provided between the pixel electrode and the common electrode Layer so that when an appropriate voltage is applied to the anode and cathode, light is emitted from the organic light-emitting layer.
  • the organic light emitting layer includes a hole injection layer provided on the anode, a hole transport layer provided on the hole injection layer, a light emitting layer provided on the hole transport layer, an electron transport layer provided on the light emitting layer,
  • the luminescence mechanism of the electron injection layer on the electron transport layer is that under a certain voltage drive, electrons and holes are injected from the cathode and anode to the electron injection layer and hole injection layer, respectively.
  • the electrons and holes pass through the electron transport layer and
  • the hole transport layer migrates to the light-emitting layer and meets in the light-emitting layer to form excitons and excite the light-emitting molecules, which emit visible light after radiation relaxation.
  • the OLED display panel includes two types of top-emission type and bottom-emission type, of which the top-emission type is currently the most commonly used type of OLED display panel, as shown in FIG.
  • the TFT layer 101 on the base substrate 100, the flat layer 102 provided on the TFT layer 101, the first electrode 103 provided on the flat layer 102, the first electrode 103 and the flat layer A pixel definition layer 104 on 102, a pixel definition groove 1041 provided in the pixel definition layer 103 exposing a part of the first electrode 104, a light-emitting layer 105 provided in the pixel definition groove 104,
  • the second electrode 106 on the light emitting layer 105 and the pixel defining groove 103 and the encapsulation layer 107 provided on the second electrode 106, wherein the flat layer 102 and the pixel defining groove 103 are both transparent film layers, so that the external Ambient light can be irradiated onto the TFT layer 101 in the OLED display panel through the flat layer 102
  • the existing OLED display panel is provided with an anti-reflection layer structure on the surface to avoid the influence of ambient light.
  • the anti-reflection layer structure is a circular polarizer.
  • the use of the circular polarizer will reduce the light output efficiency.
  • An object of the present invention is to provide an OLED display panel, which can prevent the OLED display panel from reflecting ambient light without reducing the light output efficiency and improve the viewing experience of the OLED display panel.
  • the present invention provides an OLED display panel including a plurality of sub-pixels arranged in an array, each sub-pixel includes a base substrate, a TFT layer provided on the base substrate, and a TFT provided on the TFT A flat layer on the layer, a first electrode provided on the flat layer, a pixel definition layer provided on the first electrode and the flat layer, a light emitting layer provided on the first electrode, provided on the A transparent second electrode on the light-emitting layer and the pixel definition layer and an encapsulation layer provided on the second electrode;
  • a part of at least one of the flat layer and the pixel definition layer is formed using a black light-shielding material.
  • One of the flat layer and the pixel definition layer is formed of a black light-shielding material, and the other layer is formed of a transparent material.
  • Both the flat layer and the pixel definition layer are formed of black light-shielding material.
  • Each sub-pixel has a transparent area and a non-transparent area arranged in sequence, and the first electrode and the light-emitting layer are located in the non-transparent area.
  • the flat layer and the pixel definition layer simultaneously cover the transparent area and the non-transparent area, the pixel definition layer and the flat layer located in the transparent area are formed of a transparent material, and the flat layer located in the non-transparent area are formed of a black light-shielding material .
  • the flat layer and the pixel definition layer simultaneously cover the transparent area and the non-transparent area, the flat layer and the pixel definition layer located in the transparent area are formed of a transparent material, and the pixel definition layer located in the non-transparent area uses a black shading material form.
  • the flat layer and the pixel definition layer cover the transparent area and the non-transparent area at the same time.
  • the flat layer located in the non-transparent area is formed using a black light-shielding material.
  • Both the flat layer and the pixel definition layer only cover the non-transparent area, and the flat layer and the pixel definition layer are both formed of a black light-shielding material.
  • the flat layer only covers the non-transparent area, the pixel definition layer covers both the non-transparent area and the transparent area, the flat layer is formed with a black light-shielding material, and the pixel definition layer is formed with a transparent material.
  • the pixel definition layer covers only the non-transparent area
  • the flat layer covers both the non-transparent area and the transparent area
  • the pixel definition layer is formed of a black light-shielding material
  • the flat layer is formed of a transparent material.
  • the present invention provides an OLED display panel including a plurality of sub-pixels arranged in an array, each sub-pixel includes a substrate substrate, a TFT layer provided on the substrate substrate, A flat layer on the TFT layer, a first electrode provided on the flat layer, a pixel definition layer provided on the first electrode and the flat layer, a light emitting layer provided on the first electrode, A transparent second electrode on the light-emitting layer and the pixel definition layer and an encapsulation layer provided on the second electrode; a part of at least one of the flat layer and the pixel definition layer is formed of a black light-shielding material, A part of at least one of the flat layer and the pixel definition layer is formed of a black light-shielding material, which can prevent the OLED display panel from reflecting ambient light and improve the viewing experience of the OLED display panel without reducing the light output efficiency.
  • Figure 1 is a structural diagram of an existing OLED display panel
  • FIG. 2 is a schematic diagram of the first to third embodiments of the OLED display panel of the present invention.
  • FIG. 3 is a structural diagram of a sub-pixel in the first embodiment of the OLED display panel of the present invention.
  • FIG. 4 is a structural diagram of a sub-pixel in the second embodiment of the OLED display panel of the present invention.
  • FIG. 5 is a structural diagram of a sub-pixel in the third embodiment of the OLED display panel of the present invention.
  • FIG. 6 is a schematic diagram of the fourth to eighth embodiments of the OLED display panel of the present invention.
  • FIG. 7 is a structural diagram of a sub-pixel in a fourth embodiment of the OLED display panel of the present invention.
  • FIG. 8 is a structural diagram of a sub-pixel in a fifth embodiment of the OLED display panel of the present invention.
  • FIG. 9 is a structural diagram of a sub-pixel in the sixth embodiment of the OLED display panel of the present invention.
  • FIG. 10 is a structural diagram of a sub-pixel in a seventh embodiment of the OLED display panel of the present invention.
  • FIG. 11 is a structural diagram of a sub-pixel in an eighth embodiment of the OLED display panel of the present invention.
  • FIG. 12 is a structural diagram of a sub-pixel in the ninth embodiment of the OLED display panel of the present invention.
  • the present invention provides a OLED Display panel, including multiple sub-pixels arranged in an array 10 , Each sub-pixel 10 Both include base substrate 1 ⁇ Set on the base substrate 1 Up TFT Floor 2 , Set in the TFT Floor 2 Flat layer 3 , Located on the flat layer 3 On the first electrode 4 , Located on the first electrode 4 Flat layer 3 Pixel definition layer 5 , Located on the first electrode 4 Luminescent layer 6 , Located on the light-emitting layer 6 Pixel definition layer 5 On the transparent second electrode 7 And provided on the second electrode 7 Encapsulation layer 8 ;
  • the flat layer 3 And pixel definition layer 5 A part of at least one of the layers is formed using a black light-shielding material.
  • the TFT Floor 2 Formed with OLED
  • the pixel driving circuit of the display panel may include driving TFT ,switch TFT And storage capacitors, as shown in the figure 3 To figure 5 And figure 6 to 12
  • the TFT Floor 2 Specifically including: provided on the base substrate 1 Buffer layer twenty one ⁇ Set in the buffer layer twenty one Semiconductor layer twenty two ⁇ Set in the buffer layer twenty one And semiconductor layer twenty two Gate insulating layer twenty three , Provided on the gate insulating layer twenty three On the grid twenty four , Set on the gate twenty four Gate insulating layer twenty three Interlayer insulation 25 , Provided on the interlayer insulating layer 25 Source 261 And drain 262 .
  • the source 261 And drain 262 Through two through gate insulating layers twenty three And interlayer insulation 25 Via and the semiconductor layer twenty two Both ends of the contact, the first electrode 4 Through a flat layer 3 Via and the drain 262 contact.
  • the pixel definition layer 5 Corresponding to the first electrode 4 Pixel definition slot 51 , The pixel definition slot 51 Exposing the first electrode 4 Part of the light-emitting layer 6 Formed in the pixel defining groove 51 Inside.
  • the OLED The display panel is top-emitting type OLED Display panel, the first electrode 4 For the reflective electrode, the OLED Each sub-pixel in the display panel 10 In the pixel definition layer 5 Made of black shading material, flat layer 3 Made of transparent material.
  • the OLED The display panel is top-emitting type OLED Display panel, the first electrode 4 For the reflective electrode, the OLED Each sub-pixel in the display panel 10 In the flat layer 3 Formed with black light-shielding material, the pixel definition layer 5 Made of transparent material.
  • the OLED The display panel is top-emitting type OLED Display panel, the first electrode 4 For the reflective electrode, the OLED Each sub-pixel in the display panel 10 In the flat layer 3 And pixel definition layer 5 It is made of black shading material.
  • the present invention is OLED Flat layer of display panel 3 And pixel definition layer 5 At least one of the layers is formed with black shading material, so that 3 And pixel definition layer 5 At least one of the layers can block / Absorb ambient light and prevent ambient light from passing through the flat layer 3 And pixel definition layer 5 Shine to TFT Floor 2 In TFT Floor 2 The metal in is reflected into the user's eyes, affecting the user's viewing.
  • the OLED The display panel is transparent OLED Display panel, the first electrode 4 Reflective electrode, transparent electrode or partially transparent electrode, each sub-pixel 10 All have transparent areas arranged in sequence 20 And non-transparent areas 30 , The first electrode 4 Luminescent layer 6 Located in the non-transparent area 30
  • the TFT Floor 2 Including semiconductor layer twenty two Gate twenty four Source 261 And drain 262
  • the non-transparent structure inside is also located in the non-transparent area 30
  • the TFT Floor 2 Including gate insulating layer twenty three And interlayer insulation 25
  • the inner transparent structure simultaneously covers the transparent area 20 And non-transparent areas 30 .
  • non-transparent area 30 Including display area 302 And non-display area 301
  • the display area 302 Corresponding to the light emitting layer 6 Set, said OLED
  • the light of the display panel is from the display area 302 Issued in the non-transparent area 30 Neutral display area 302 Non-display area 301 , Said TFT Floor 2 Semiconductor layer twenty two Gate twenty four Source 261 And drain 262 And other structures are located in the non-display area 301 in.
  • the flat layer 3 And pixel definition layer 5 While covering the transparent area 20 And non-transparent areas 30 , the flat layer 3 And located in the transparent area 20 Pixel definition layer 5 Made of transparent material, located in non-transparent area 30 Pixel definition layer 5 It is made of black shading material.
  • the flat layer 3 And pixel definition layer 5 While covering the transparent area 20 And non-transparent areas 30 , the pixel definition layer 5 And located in the transparent area 20 Flat layer 3 Made of transparent material, located in non-transparent area 30 Flat layer 3 It is made of black shading material.
  • the flat layer 3 And pixel definition layer 5 While covering the transparent area 20 And non-transparent areas 30 , Located in the transparent area 20 Flat layer 3 And located in the transparent area 20 Pixel definition layer 5 All are made of transparent materials, located in the non-transparent area 30 Pixel definition layer 5 And located in the subpixel 10 Flat layer 3 They are all made of black shading material.
  • the pixel definition layer 5 Cover only the non-transparent area 30 , The flat layer 3 While covering the non-transparent area 30 And transparent area 20 , The pixel definition layer 5 Formed with black shading material, the flat layer 3 Made of transparent material.
  • the flat layer 3 Cover only the non-transparent area 30 , The pixel definition layer 5 While covering the non-transparent area 30 And transparent area 20 , The flat layer 3 Formed with black light-shielding material, the pixel definition layer 5 Made of transparent material.
  • the flat layer 3 And pixel definition layer 5 Only cover the non-transparent area 30 , The flat layer 3 Pixel definition layer 5 They are all made of black shading material.
  • the present invention OLED Non-transparent area of the display panel 30 Flat layer 3 And pixel definition layer 5 At least one of the layers is formed with black shading material, so that 3 And pixel definition layer 5 At least one of the layers can block / Absorb ambient light and prevent ambient light from passing through the flat layer 3 And pixel definition layer 5 Shine to TFT Floor 2 In TFT Floor 2
  • the metal in is reflected into the user's eyes and affects the user's viewing, while setting the transparent area 30 Flat layer 3 And pixel definition layer 5 Transparent, or no flat layer directly 3 And pixel definition layer 5 So that the transparent area 20 Ability to maintain transparency and avoid flat layers 3 And pixel definition layer 5 Affect transparency OLED Transparency of the display panel.
  • the black shading material is black resin
  • the transparent material is transparent resin
  • the flat layer 3 While covering the transparent area 20 And non-transparent areas 30 , And the transparent area 20 Flat layer 3 Transparent material, non-transparent area 30 Flat layer 3
  • the flat layer can be formed by the following steps 3 , First use black shading material in a non-transparent area through a patterning process 30 Form a black shading flat layer 3 , And then in the transparent area by coating or inkjet 20 Use transparent materials to form a transparent flat layer 3 And keep the non-transparent area 30 And transparent area 20 Flat layer 3
  • the thickness is consistent or within the preset error range, of course the non-transparent area 30 And transparent area 20 Flat layer 3
  • the production order can be changed, or a transparent area can be formed through a patterning process 20 Flat layer 3 , And then form non-transparent areas by coating or inkjet 30 Flat layer 3 , This will not affect the realization of the present invention.
  • the pixel definition layer 5 While covering the transparent area 20 And non-transparent areas 30 , And the transparent area 20 Pixel definition layer 5 Transparent material, non-transparent area 30 Pixel definition layer 5
  • the pixel definition layer can be formed by the following steps 5 , First use black shading material in a non-transparent area through a patterning process 30 Form a black light-shielding pixel definition layer 5 , And then in the transparent area by coating or inkjet 20 Use transparent materials to form transparent pixel definition layer 5 And keep the non-transparent area 30 And transparent area 20 Pixel definition layer 5 The thickness is consistent or within the preset error range, of course the non-transparent area 30 And transparent area 20 Pixel definition layer 5
  • the production order can be changed, or a transparent area can be formed through a patterning process 20 Pixel definition layer 5 , And then form non-transparent areas by coating or inkjet 30 Pixel definition layer 5 , This will not affect the realization of the present invention.
  • the present invention provides a OLED
  • a display panel includes a plurality of sub-pixels arranged in an array, each sub-pixel includes a base substrate, and a sub-pixel provided on the base substrate TFT Layer TFT A flat layer on the layer, a first electrode provided on the flat layer, a pixel definition layer provided on the first electrode and the flat layer, a light emitting layer provided on the first electrode, provided on the A transparent second electrode on the light-emitting layer and the pixel definition layer and an encapsulation layer provided on the second electrode; a part of at least one of the flat layer and the pixel definition layer is formed of a black light-shielding material, by providing the A part of at least one of the flat layer and the pixel definition layer is formed of a black light-shielding material, which can be avoided without reducing the light extraction efficiency OLED
  • the display panel reflects ambient light and improves OLED The viewing experience of the display panel.

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  • Microelectronics & Electronic Packaging (AREA)
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Abstract

本发明提供一种OLED显示面板。所述OLED显示面板包括阵列排布的多个子像素,每一个子像素均包括衬底基板、设于所述衬底基板上的TFT层、设于所述TFT层上的平坦层、设于所述平坦层上的第一电极、设于所述第一电极及平坦层上的像素定义层、设于所述第一电极上的发光层、设于所述发光层及像素定义层上的透明的第二电极及设于所述第二电极上的封装层;所述平坦层和像素定义层中至少一层的一部分采用黑色遮光材料形成,通过设置所述平坦层和像素定义层中至少一层的一部分采用黑色遮光材料形成,能够在不降低出光效率的前提下,避免OLED显示面板反射环境光,提升OLED显示面板的观看体验。

Description

OLED显示面板 技术领域
本发明涉及显示技术领域,尤其涉及一种OLED显示面板。
背景技术
有机电致发光显示 (Organic Light Emitting Display,OLED)器件不仅具有十分优异的显示性能,还具有自发光、结构简单、超轻薄、响应速度快、宽视角、低功耗及可实现柔性显示等特性,被誉为“梦幻显示器”,得到了各大显示器厂家的青睐,已成为显示技术领域中第三代显示器件的主力军。
OLED显示面板属于自发射型显示设备,通常包括用作阳极和阴极中的一个的像素电极以及用作阳极和阴极中的另一个的公共电极、以及设在像素电极与公共电极之间的有机发光层,使得在适当的电压被施加于阳极与阴极时,从有机发光层发光。有机发光层包括了设于阳极上的空穴注入层、设于空穴注入层上的空穴传输层、设于空穴传输层上的发光层、设于发光层上的电子传输层、设于电子传输层上的电子注入层,其发光机理为在一定电压驱动下,电子和空穴分别从阴极和阳极注入到电子注入层和空穴注入层,电子和空穴分别经过电子传输层和空穴传输层迁移到发光层,并在发光层中相遇,形成激子并使发光分子激发,后者经过辐射弛豫而发出可见光。
按照发光方向的不同,OLED显示面板包括顶发光型和底发光型两种,其中顶发光型是目前最常用的OLED显示面板类型,如图1所示,其通常包括衬底基板100、设于所述衬底基板100上的TFT层101、设于所述TFT层101上的平坦层102、设于所述平坦层102上的第一电极103、设于所述第一电极103和平坦层102上的像素定义层104、设于所述像素定义层103中暴露出所述第一电极104的一部分的像素定义槽1041、设于所述像素定义槽104中的发光层105、设于所述发光层105和像素定义槽103上的第二电极106以及设于所述第二电极106上的封装层107,其中所述平坦层102和像素定义槽103均为透明膜层,从而使得外部环境光能透过所述平坦层102和像素定义槽103照射到OLED显示面板内的TFT层101上,接着被平坦层102和像素定义槽103反射到人眼中,影响用户的正常观看,因此在现有的OLED显示面板会在表面设置有抗反射层结构,以避免环境光的影响,通常抗反射层结构为圆偏光片,然而圆偏光片的使用将使出光效率下降。
技术问题
本发明的目的在于提供一种OLED显示面板,能够在不降低出光效率的前提下,避免OLED显示面板反射环境光,提升OLED显示面板的观看体验。
技术解决方案
为实现上述目的,本发明提供一种OLED显示面板,包括阵列排布的多个子像素,每一个子像素均包括衬底基板、设于所述衬底基板上的TFT层、设于所述TFT层上的平坦层、设于所述平坦层上的第一电极、设于所述第一电极及平坦层上的像素定义层、设于所述第一电极上的发光层、设于所述发光层及像素定义层上的透明的第二电极及设于所述第二电极上的封装层;
所述平坦层和像素定义层中至少一层的一部分采用黑色遮光材料形成。
所述平坦层和像素定义层中的一层采用黑色遮光材料形成,另一层采用透明材料形成。
所述平坦层及像素定义层均采用黑色遮光材料形成。
每一个子像素均具有依次排列的透明区及非透明区,所述第一电极及发光层位于所述非透明区中。
所述平坦层和像素定义层同时覆盖所述透明区及非透明区,所述像素定义层及位于透明区中的平坦层采用透明材料形成,位于非透明区中的平坦层采用黑色遮光材料形成。
所述平坦层和像素定义层同时覆盖所述透明区及非透明区,所述平坦层及位于透明区中的像素定义层采用透明材料形成,位于非透明区中的像素定义层采用黑色遮光材料形成。
所述平坦层和像素定义层同时覆盖所述透明区及非透明区,位于透明区中的平坦层及位于透明区中的像素定义层均采用透明材料形成,位于非透明区中的像素定义层和位于非透明区中的平坦层均采用黑色遮光材料形成。
所述平坦层和像素定义层均仅覆盖所述非透明区,所述平坦层及像素定义层均采用黑色遮光材料形成。
所述平坦层仅覆盖所述非透明区,所述像素定义层同时覆盖所述非透明区和透明区,所述平坦层采用黑色遮光材料形成,所述像素定义层采用透明材料形成。
所述像素定义层仅覆盖所述非透明区,所述平坦层同时覆盖所述非透明区和透明区,所述像素定义层采用黑色遮光材料形成,所述平坦层采用透明材料形成。
有益效果
本发明的有益效果:本发明提供一种OLED显示面板,包括阵列排布的多个子像素,每一个子像素均包括衬底基板、设于所述衬底基板上的TFT层、设于所述TFT层上的平坦层、设于所述平坦层上的第一电极、设于所述第一电极及平坦层上的像素定义层、设于所述第一电极上的发光层、设于所述发光层及像素定义层上的透明的第二电极及设于所述第二电极上的封装层;所述平坦层和像素定义层中至少一层的一部分采用黑色遮光材料形成,通过设置所述平坦层和像素定义层中至少一层的一部分采用黑色遮光材料形成,能够在不降低出光效率的前提下,避免OLED显示面板反射环境光,提升OLED显示面板的观看体验。
附图说明
为了能更进一步了解本发明的特征以及技术内容,请参阅以下有关本发明的详细说明与附图,然而附图仅提供参考与说明用,并非用来对本发明加以限制。
附图中,
图1为现有的OLED显示面板的结构图;
图2为本发明的OLED显示面板的第一至第三实施例的示意图;
图3为本发明的OLED显示面板的第一实施例中子像素的结构图;
图4为本发明的OLED显示面板的第二实施例中子像素的结构图;
图5为本发明的OLED显示面板的第三实施例中子像素的结构图;
图6为本发明的OLED显示面板的第四至第八实施例的示意图;
图7为本发明的OLED显示面板的第四实施例中子像素的结构图;
图8为本发明的OLED显示面板的第五实施例中子像素的结构图;
图9为本发明的OLED显示面板的第六实施例中子像素的结构图;
图10为本发明的OLED显示面板的第七实施例中子像素的结构图;
图11为本发明的OLED显示面板的第八实施例中子像素的结构图;
图12为本发明的OLED显示面板的第九实施例中子像素的结构图。
本发明的实施方式
为更进一步阐述本发明所采取的技术手段及其效果,以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图 2 至图 12 ,本发明提供一种 OLED 显示面板,包括阵列排布的多个子像素 10 ,每一个子像素 10 均包括衬底基板 1 、设于所述衬底基板 1 上的 TFT 2 、设于所述 TFT 2 上的平坦层 3 、设于所述平坦层 3 上的第一电极 4 、设于所述第一电极 4 及平坦层 3 上的像素定义层 5 、设于所述第一电极 4 上的发光层 6 、设于所述发光层 6 及像素定义层 5 上的透明的第二电极 7 及设于所述第二电极 7 上的封装层 8
所述平坦层 3 和像素定义层 5 中至少一层的一部分采用黑色遮光材料形成。
具体地,所述 TFT 2 形成有 OLED 显示面板的像素驱动电路,可以包括驱动 TFT 、开关 TFT 及存储电容等结构,如图 3 至图 5 及图 6 12 所示,在本发明的一些实施例中,所述 TFT 2 具体包括:设于所述衬底基板 1 上的缓冲层 21 、设于所述缓冲层 21 上的半导体层 22 、设于所述缓冲层 21 和半导体层 22 上的栅极绝缘层 23 、设于所述栅极绝缘层 23 上的栅极 24 、设于所述栅极 24 及栅极绝缘层 23 上的层间绝缘层 25 、设于所述层间绝缘层 25 上的源极 261 和漏极 262
进一步地,在图 3 至图 5 及图 6 至图 12 所示中仅示出了所述像素驱动电路中的一个 TFT ,但这并非对本发明的限制,实际上本发明的 OLED 显示面板中 TFT 2 中可形成多个 TFT 及存储电容, 用于驱动 OLED 发光及对 OLED 进行亮度补偿。
进一步地,所述源极 261 和漏极 262 分别通过两贯穿栅极绝缘层 23 和层间绝缘层 25 的过孔与所述半导体层 22 的两端接触,所述第一电极 4 通过一贯穿所述平坦层 3 的过孔与所述漏极 262 接触。
进一步地,所述像素定义层 5 相间对应所述第一电极 4 的位置形成有像素定义槽 51 ,所述像素定义槽 51 暴露出所述第一电极 4 的一部分,所述发光层 6 形成于所述像素定义槽 51 内。
具体地,如图 2 和图 3 所示,在本发明的第一实施例中,所述 OLED 显示面板为顶发光型 OLED 显示面板,所述第一电极 4 为反射电极,该 OLED 显示面板中每一个子像素 10 中,所述像素定义层 5 采用黑色遮光材料形成,平坦层 3 采用透明材料形成。
具体地,如图 2 及图 4 所示,在本发明的第二实施例中,所述 OLED 显示面板为顶发光型 OLED 显示面板,所述第一电极 4 为反射电极,该 OLED 显示面板中每一个子像素 10 中,所述平坦层 3 采用黑色遮光材料形成,所述像素定义层 5 采用透明材料形成。
具体地,如图 2 及图 5 所示,在本发明的第三实施例中,所述 OLED 显示面板为顶发光型 OLED 显示面板,所述第一电极 4 为反射电极,该 OLED 显示面板中每一个子像素 10 中,所述平坦层 3 和像素定义层 5 采用黑色遮光材料形成。
进一步地,在本发明的第一至第三实施例中,本发明通过设置顶发光型 OLED 显示面板的平坦层 3 和像素定义层 5 中的至少一层采用黑色遮光材料形成,从而使得平坦层 3 和像素定义层 5 中的至少一层能够遮挡 / 吸收环境光,防止环境光透过平坦层 3 和像素定义层 5 照射到 TFT 2 中,被 TFT 2 中的金属反射到用户眼中,影响用户观看。
具体地,如图 6 至图 12 所示,在本发明的第四至第九实施例中,所述 OLED 显示面板为透明 OLED 显示面板,所述第一电极 4 为反射电极、透明电极或部分透明电极,每一个子像素 10 均具有依次排列的透明区 20 及非透明区 30 ,所述第一电极 4 及发光层 6 位于所述非透明区 30 中,此外,所述 TFT 2 中包括半导体层 22 、栅极 24 、源极 261 和漏极 262 在内的非透明结构也位于非透明区 30 中,而所述 TFT 2 中包括栅极绝缘层 23 和层间绝缘层 25 在内的透明结构同时覆盖所述透明区 20 和非透明区 30
进一步地,所述非透明区 30 包括显示区 302 及非显示区 301 ,所述显示区 302 对应与所述发光层 6 设置,所述 OLED 显示面板的光线均从所述显示区 302 中发出,所述非透明区 30 中除显示区 302 以外的部分为非显示区 301 ,所述 TFT 2 中的半导体层 22 、栅极 24 、源极 261 和漏极 262 等结构均位于非显示区 301 中。
具体地,如图 7 所示,在本发明的第四实施例中,所述平坦层 3 和像素定义层 5 同时覆盖所述透明区 20 及非透明区 30 ,所述平坦层 3 及位于透明区 20 中的像素定义层 5 采用透明材料形成,位于非透明区 30 中的像素定义层 5 采用黑色遮光材料形成。
具体地,如图 8 所示,在本发明的第五实施例中,所述平坦层 3 和像素定义层 5 同时覆盖所述透明区 20 及非透明区 30 ,所述像素定义层 5 及位于透明区 20 中的平坦层 3 采用透明材料形成,位于非透明区 30 中的平坦层 3 采用黑色遮光材料形成。
具体地,如图 9 所示,在本发明的第六实施例中,所述平坦层 3 和像素定义层 5 同时覆盖所述透明区 20 及非透明区 30 ,位于透明区 20 中的平坦层 3 及位于透明区 20 中的像素定义层 5 均采用透明材料形成,位于非透明区 30 中的像素定义层 5 和位于子像素 10 中的平坦层 3 均采用黑色遮光材料形成。
具体地,如图 10 所示,在本发明的第七实施例中,所述像素定义层 5 仅覆盖所述非透明区 30 ,所述平坦层 3 同时覆盖所述非透明区 30 和透明区 20 ,所述像素定义层 5 采用黑色遮光材料形成,所述平坦层 3 采用透明材料形成。
具体地,如图 11 所示,在本发明的第八实施例中,所述平坦层 3 仅覆盖所述非透明区 30 ,所述像素定义层 5 同时覆盖所述非透明区 30 和透明区 20 ,所述平坦层 3 采用黑色遮光材料形成,所述像素定义层 5 采用透明材料形成。
具体地,如图 12 所示,在本发明的第九实施例中,所述平坦层 3 和像素定义层 5 均仅覆盖所述非透明区 30 ,所述平坦层 3 及像素定义层 5 均采用黑色遮光材料形成。
从而,在本发明的第四至第九实施例中,本发明通过设置透明 OLED 显示面板的非透明区 30 中的平坦层 3 和像素定义层 5 中的至少一层采用黑色遮光材料形成,从而使得平坦层 3 和像素定义层 5 中的至少一层能够遮挡 / 吸收环境光,防止环境光透过平坦层 3 和像素定义层 5 照射到 TFT 2 中,被 TFT 2 中的金属反射到用户眼中,影响用户观看,同时设置透明区 30 中的平坦层 3 和像素定义层 5 为透明的,或直接不设置平坦层 3 和像素定义层 5 ,使得透明区 20 能够保持透明,避免因平坦层 3 和像素定义层 5 影响透明 OLED 显示面板的透明性。
优选地,所述黑色遮光材料为黑色树脂,所述透明材料为透明树脂。
进一步地,当所述平坦层 3 同时覆盖所述透明区 20 及非透明区 30 ,且所述透明区 20 中的平坦层 3 为透明材料,非透明区 30 中的平坦层 3 为黑色遮光材料时,可通过如下步骤形成所述平坦层 3 ,先采用黑色遮光材料通过一道图案化制程在非透明区 30 形成黑色遮光的平坦层 3 ,然后在通过涂布或喷墨等方法在透明区 20 中利用透明材料形成透明的平坦层 3 ,并且保持非透明区 30 和透明区 20 中的平坦层 3 的厚度一致或在预设的误差范围内,当然所述非透明区 30 和透明区 20 中的平坦层 3 的制作顺序可以变化,也可以先通过一道图案化制程形成透明区 20 中的平坦层 3 ,再通过涂布或喷墨等方法形成非透明区 30 中的平坦层 3 ,这都不会影响本发明的实现。
进一步地,当所述像素定义层 5 同时覆盖所述透明区 20 及非透明区 30 ,且所述透明区 20 中的像素定义层 5 为透明材料,非透明区 30 中的像素定义层 5 为黑色遮光材料时,可通过如下步骤形成所述像素定义层 5 ,先采用黑色遮光材料通过一道图案化制程在非透明区 30 形成黑色遮光的像素定义层 5 ,然后在通过涂布或喷墨等方法在透明区 20 中利用透明材料形成透明的像素定义层 5 ,并且保持非透明区 30 和透明区 20 中的像素定义层 5 的厚度一致或在预设的误差范围内,当然所述非透明区 30 和透明区 20 中的像素定义层 5 的制作顺序可以变化,也可以先通过一道图案化制程形成透明区 20 中的像素定义层 5 ,再通过涂布或喷墨等方法形成非透明区 30 中的像素定义层 5 ,这都不会影响本发明的实现。
综上所述,本发明提供一种 OLED 显示面板,包括阵列排布的多个子像素,每一个子像素均包括衬底基板、设于所述衬底基板上的 TFT 层、设于所述 TFT 层上的平坦层、设于所述平坦层上的第一电极、设于所述第一电极及平坦层上的像素定义层、设于所述第一电极上的发光层、设于所述发光层及像素定义层上的透明的第二电极及设于所述第二电极上的封装层;所述平坦层和像素定义层中至少一层的一部分采用黑色遮光材料形成,通过设置所述平坦层和像素定义层中至少一层的一部分采用黑色遮光材料形成,能够在不降低出光效率的前提下,避免 OLED 显示面板反射环境光,提升 OLED 显示面板的观看体验。
以上所述,对于本领域的普通技术人员来说,可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形,而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (10)

  1. 一种OLED显示面板,包括阵列排布的多个子像素,每一个子像素均包括衬底基板、设于所述衬底基板上的TFT层、设于所述TFT层上的平坦层、设于所述平坦层上的第一电极、设于所述第一电极及平坦层上的像素定义层、设于所述第一电极上的发光层、设于所述发光层及像素定义层上的透明的第二电极及设于所述第二电极上的封装层;
    所述平坦层和像素定义层中至少一层的一部分采用黑色遮光材料形成。
  2. 如权利要求1所述的OLED显示面板,其中,所述平坦层和像素定义层中的一层采用黑色遮光材料形成,另一层采用透明材料形成。
  3. 如权利要求1所述的OLED显示面板,其中,所述平坦层及像素定义层均采用黑色遮光材料形成。
  4. 如权利要求1所述的OLED显示面板,其中,每一个子像素均具有依次排列的透明区及非透明区,所述第一电极及发光层位于所述非透明区中。
  5. 如权利要求4所述的OLED显示面板,其中,所述平坦层和像素定义层同时覆盖所述透明区及非透明区,所述像素定义层及位于透明区中的平坦层采用透明材料形成,位于非透明区中的平坦层采用黑色遮光材料形成。
  6. 如权利要求4所述的OLED显示面板,其中,所述平坦层和像素定义层同时覆盖所述透明区及非透明区,所述平坦层及位于透明区中的像素定义层采用透明材料形成,位于非透明区中的像素定义层采用黑色遮光材料形成。
  7. 如权利要求4所述的OLED显示面板,其中,所述平坦层和像素定义层同时覆盖所述透明区及非透明区,位于透明区中的平坦层及位于透明区中的像素定义层均采用透明材料形成,位于非透明区中的像素定义层和位于非透明区中的平坦层均采用黑色遮光材料形成。
  8. 如权利要求4所述的OLED显示面板,其中,所述平坦层和像素定义层均仅覆盖所述非透明区,所述平坦层及像素定义层均采用黑色遮光材料形成。
  9. 如权利要求4所述的OLED显示面板,其中,所述平坦层仅覆盖所述非透明区,所述像素定义层同时覆盖所述非透明区和透明区,所述平坦层采用黑色遮光材料形成,所述像素定义层采用透明材料形成。
  10. 如权利要求4所述的OLED显示面板,其中,所述像素定义层仅覆盖所述非透明区,所述平坦层同时覆盖所述非透明区和透明区,所述像素定义层采用黑色遮光材料形成,所述平坦层采用透明材料形成。
     
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