WO2020237507A1 - Oled double-sided display panel - Google Patents

Oled double-sided display panel Download PDF

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Publication number
WO2020237507A1
WO2020237507A1 PCT/CN2019/088843 CN2019088843W WO2020237507A1 WO 2020237507 A1 WO2020237507 A1 WO 2020237507A1 CN 2019088843 W CN2019088843 W CN 2019088843W WO 2020237507 A1 WO2020237507 A1 WO 2020237507A1
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WO
WIPO (PCT)
Prior art keywords
light
display panel
filter
sided display
layer
Prior art date
Application number
PCT/CN2019/088843
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French (fr)
Chinese (zh)
Inventor
林俊仪
周启华
Original Assignee
深圳市柔宇科技有限公司
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Application filed by 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to CN201980080823.0A priority Critical patent/CN113330577A/en
Priority to PCT/CN2019/088843 priority patent/WO2020237507A1/en
Publication of WO2020237507A1 publication Critical patent/WO2020237507A1/en

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/876—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair

Definitions

  • This application relates to the field of display technology, in particular to an OLED double-sided display panel.
  • OLED Organic Light-Emitting Diode
  • OLED display panels that can display on both sides are increasingly favored by users.
  • This application aims to provide an OLED double-sided display panel to solve the technical problem of low color saturation of the traditional double-sided display panel.
  • the OLED double-sided display panel includes: a light-emitting unit; a control circuit connected to the light-emitting unit for controlling the light-emitting unit to emit light; and a filter arranged on at least one light-emitting side of the light-emitting unit Unit, the filter unit is used to filter out at least a part of the wavelength of light emitted from the light-emitting unit; and a transparent substrate, the transparent substrate is used to carry the light-emitting unit, the control circuit and the filter unit .
  • the filter unit is used to increase the color saturation that is reduced due to the weakening of the microcavity effect.
  • a part of the light emitted by the light-emitting unit is emitted from one side of the OLED double-sided display panel in a first direction after passing through the filter unit, and another part of the light is emitted from another side of the OLED display panel in a second direction. Eject from one side, and the first direction is opposite to the second direction.
  • the filter units are respectively arranged on two opposite light-emitting sides of the light-emitting unit.
  • the light-emitting unit is a white light-emitting unit
  • the filter unit is prepared by a combination of a red filter material, a green filter material, and a blue filter material.
  • the light emitting unit includes a red light emitting subunit, a green light emitting subunit, and a blue light emitting subunit;
  • the filter unit includes a red filter subunit disposed opposite to the red light emitting subunit, and A green filter sub-unit arranged opposite to the light-emitting sub-unit and a blue filter sub-unit arranged opposite to the blue light-emitting sub-unit.
  • the OLED double-sided display panel further includes a shading unit, the shading units are arranged in pairs, respectively located at the top and bottom of the metal traces connecting the light-emitting unit and the control circuit, for shielding the Light reflected by metal traces.
  • the shading unit is made of a metal material or an organic material.
  • the OLED double-sided display panel includes several pixel units; each of the pixel units includes a circuit control area, a light-emitting area, and a transparent area.
  • the circuit control area, the light-emitting area, and the transparent area are arranged side by side along a direction perpendicular to the light-emitting direction.
  • the transparent area includes a plurality of stacked layers, the stacked layers in the transparent area are all organic materials, and the absolute value of the refractive index difference of each stacked layer is less than 0.05.
  • control circuit is provided in the circuit control area of the transparent substrate, and the light-emitting unit and the filter unit are provided in the transparent substrate. Light-emitting area.
  • the difference in distance between the light emitting unit and the top surface and the bottom surface of the OLED double-sided display panel is less than 20%.
  • the OLED double-sided display panel further includes an encapsulation layer and a planarization layer; the encapsulation layer is disposed between one of the pair of filter units and the light-emitting unit; The flat layer is arranged between the other filter unit of the pair of filter units and the light emitting unit.
  • the one of the filter units includes: a first filter layer, and the other filter unit includes: a second filter layer; the first filter layer is arranged on the transparent substrate to emit light Zone, the flat layer is laminated on the first filter layer to form a flat surface;
  • the light-emitting unit is stacked on the flat layer, and the encapsulation layer is stacked on the top of the light-emitting unit;
  • the second filter layer is stacked on the encapsulation layer.
  • the OLED double-sided display panel further includes a pixel definition layer
  • the pixel definition layer is disposed on the flat surface formed by the flat layer, and is used to form a recess for positioning the light-emitting unit.
  • the OLED double-sided display panel further includes a protective layer; the protective layer covers the surface of the second filter layer.
  • the thicknesses of the protective layer, the second filter layer, the encapsulation layer, the transparent substrate, the flat layer, and the first filter layer satisfy the following conditions:
  • the protective layer, the encapsulation layer, the flat layer and the transparent substrate have the same refractive index.
  • the OLED double-sided display panel provided by the embodiment of the present application has a specially configured filter structure. It can focus the emitted light on a narrower band, thereby effectively solving the problem of reduced color saturation caused by the complete transparency of the double-sided display panel.
  • the emitted light has high color purity and the picture quality can be guaranteed.
  • FIG. 1 is a schematic diagram of the structure of a double-sided transparent display panel provided on a pixel unit according to an embodiment of the present application;
  • FIG. 2 is a schematic structural diagram of an OLED double-sided display panel provided by an embodiment of the present application.
  • FIG. 3 is a manufacturing flow chart of the OLED double-sided display panel shown in FIG. 2.
  • the "microcavity effect” is an effective way to solve the excessively broad emission spectrum of OLED devices. It mainly uses the reflection effect of metal electrodes and a reasonable optical microcavity structure to make the light emitted by the organic electroluminescent material reflect back and forth inside the device, and finally only light of a specific wavelength can be emitted from the device. As a result, the use of the "microcavity effect” can achieve an excellent effect of narrowing the luminescence spectrum and improving the color purity and color saturation.
  • the double-sided display panel of the embodiment of the present invention is composed of a plurality of pixel units arranged vertically and horizontally. Each pixel unit emits light of a color corresponding to the control signal to form the final display image.
  • the double-sided transparent display panel of the embodiment of the present invention includes a transparent area 11, a light-emitting area 12, and a circuit control area 13 arranged in sequence.
  • the circuit control area 11, the light-emitting area 12, and the transparent area 13 are arranged side by side along the direction perpendicular to the light emitting direction.
  • the transparent area 11 is a part with a higher light transmittance to form a transparent display effect. Since the transparent area 1 includes multiple laminated layers. In a preferred embodiment, in order to ensure the effect of transparent display and ensure that the transparent area has sufficient transparency, the absolute value of the refractive index difference of each layer of the transparent area can be controlled to be lower than the set threshold, so that it is in The entire transparent area is roughly consistent.
  • the set threshold value is 0.05, that is, the absolute value of the refractive index difference of each laminated layer is less than 0.05 to ensure that the refractive index between different laminated layers in the transparent area does not change significantly, which affects the transparent display effect.
  • any suitable method can be used to achieve the above-mentioned setting requirement of the refractive index of the transparent region.
  • organic materials with similar refractive indices are used to prepare each laminate to satisfy that the absolute value of the refractive index difference of each laminate is less than 0.05.
  • the light-emitting area 12 is a part that accommodates light-emitting units such as OLED light-emitting devices.
  • the circuit control area 13 is an area for accommodating and placing control circuits (for example, a control circuit composed of TFTs), which is connected to the light-emitting unit of the light-emitting area 12 and controls the power supply current applied to the light-emitting unit to control the display screen.
  • the circuit control area 13 is arranged on one side of the light-emitting area 12, so that the light emitted by the light-emitting area 12 can be emitted from both sides of the pixel unit.
  • FIG. 2 is a schematic structural diagram of an OLED double-sided display panel provided by an embodiment of the application.
  • FIG. 2 for simplicity of presentation, only a schematic cross-sectional view of a single pixel unit is taken as an example for display.
  • the OLED double-sided display panel includes: a light emitting unit 21, a control circuit 22, a filter unit (23, 24) and a transparent substrate 25.
  • the transparent substrate 25 is the carrying body of the entire OLED double-sided display panel, and is used to form a supporting structure to carry the light emitting unit 21, the control circuit 22, and the filter unit (23, 24) and other devices.
  • a transparent substrate is selected to ensure that light can be emitted from the bottom.
  • a transparent flexible substrate can be selected to meet the use requirements such as folding or bending of the display panel.
  • the light-emitting unit 21 is the core of the display and is used to emit light under current control.
  • the light-emitting unit 21 can adopt an OLED device of any suitable structure. Typically, it can be composed of an anode, a cathode, and an organic electroluminescent material layer sandwiched between the anode and the cathode.
  • the control circuit 22 is electrically connected to the light emitting unit 21 for controlling the current applied to the light emitting unit 21.
  • the control circuit 22 may specifically adopt any suitable type of control circuit structure to control the light-emitting unit 21 according to actual needs, so as to finally display a corresponding picture on the OLED double-sided display panel.
  • the control circuit 22 may be a control circuit composed of TFT devices deposited on a transparent substrate, and is used to adjust the current flowing through the light-emitting unit according to different control signals, thereby changing the emission of the light-emitting unit 21. Of light.
  • the filter units 23, 24 are arranged in pairs, respectively located on the side near the top of the light-emitting unit 21 (filter unit 24) and the side near the bottom (filter unit 23). ). It can be made of any suitable type of filter material, which is used to filter at least a part of the wavelength of light emitted from the top and bottom of the light-emitting unit 21.
  • the specific materials or structure settings can be determined according to actual conditions. , For example, choose the corresponding filter material according to the waveband that needs to be filtered.
  • the additional filter units 23 and 24 can filter out some wavelengths of light, and selectively emit light of a narrower target wavelength band from the OLED display panel to achieve a similar effect to the microcavity effect. Narrow spectrum effect.
  • the filter units 23, 24 can increase the color saturation that is reduced due to the weakening of the microcavity effect. Therefore, the OLED double-sided display panel with this structure can solve the problem of the light emitting unit 21 being emitted due to the weakening of the microcavity effect. The light spectrum is wider and the color saturation is reduced.
  • the filter units 23 and 24 in FIG. 1 are only used to illustrate the structure of the OLED double-sided display panel.
  • the filter unit on one side can also be reduced (the filter unit is reduced).
  • the OLED double-sided display panel with the above-mentioned deformation structure can also satisfy the filter Part of the wavelength band light emitted from the light emitting unit 21.
  • the filter unit 24 For example, after the filter unit 24 is reduced, a part of the light emitted by the light-emitting unit 21 is emitted from one side of the OLED double-sided display panel in the first direction after passing through the filter unit 23, and another part of the light is emitted along the The second direction is emitted from the other side of the OLED display panel, and the first direction is opposite to the second direction.
  • first direction and second direction here are only used to distinguish the light emitting unit from the two Different names are used for the light in the opposite direction.
  • the control circuit area 13 generates three primary colors (red light, blue light, and green light) for the light-emitting area 12 according to the input control signal.
  • the proportion is controlled so that the pixel unit can display any color. Therefore, the light-emitting area 12 needs to be composed of a red light area 121, a green light area 122, and a blue light area 123.
  • the light-emitting unit 21 and the filter unit 22 may specifically adopt a variety of coordinated structures to meet the requirements of generating three primary colors in the light-emitting area 12.
  • the light emitting unit 21 may be a white light emitting unit.
  • the filter unit 22 is prepared by combining a red filter material, a green filter material, and a blue filter material.
  • the white light emitted by the light-emitting unit 21 passes through the portion of the red filter material, it can generate red light; when it passes through the portion of the green filter material, it can generate green light; and the light-emitting unit 21 emits When the white light passes through the blue filter material, blue light can be generated.
  • the light emitting unit 21 may further include a red light emitting subunit, a green light emitting subunit, and a blue light emitting subunit, the red light emitting subunit, the green light emitting subunit, and the blue light emitting subunit.
  • the subunits can be made of different organic electroluminescent materials.
  • the filter unit 22 includes a red filter subunit disposed opposite to the red light emitting subunit, a green filter subunit disposed opposite to the green light emitting subunit, and opposite to the blue light emitting subunit.
  • the blue filter subunit is arranged to generate three primary colors in the light-emitting area 12.
  • the light emitting unit may also be a blue light emitting unit
  • the filter unit is formed by a combination of a quantum dot red filter unit and a quantum dot green filter unit.
  • metal wires in the structure of the OLED display panel such as metal connecting wires for connecting the control circuit 23 and the light-emitting unit 21.
  • These metal traces are distributed in specific metal trace areas and have strong reflectivity, which will have a certain impact on the display screen.
  • the OLED display panel may further include a shading unit 26 for reducing the reflectivity of the metal wiring area.
  • the shading units 26 are also arranged in pairs, respectively located at the top and bottom of the metal wiring connecting the light-emitting unit 21 and the control circuit 22, for shielding light reflected by the metal wiring.
  • the additional shading unit 26 can prevent the stray reflected light from being emitted from the top or bottom of the OLED display panel, affecting the display quality of the picture and causing the problem of reduced transparency.
  • any suitable type of metal material or organic material can be used to prepare the shading unit 26, as long as it can shield stray emitted light.
  • chromium or its oxide, acrylic, polyimide or suitable thermoplastic polymer materials can be used.
  • acrylic, polyimide or suitable thermoplastic polymer materials can be used.
  • other suitable metal oxides can also be selected.
  • the light emitted from the top surface and the bottom surface may also produce significant color differences due to the different film structures passing through, which affects the double-sided display effect.
  • the structure of the light-emitting area 12 can be further adjusted to control the top and bottom surfaces of the light-emitting unit 21 and the OLED double-sided display panel.
  • the distance difference is less than 20%.
  • bottom or “bottom” is used to indicate the side where the transparent substrate 25 is located.
  • top or “top” means the side opposite to “bottom” and “bottom”.
  • bottom surface and “top surface” do not limit the structure of the OLED double-sided display panel, and they can be interchanged arbitrarily or use other words to indicate the two opposite light-emitting surfaces of the OLED double-sided display panel.
  • the OLED double-sided display panel further includes: an encapsulation layer 27 and a flat layer 28.
  • the encapsulation layer 27 is provided between the filter unit 24 and the light emitting unit 21, and the flat layer 28 is provided between the filter unit 23 and the light emitting unit 21.
  • the encapsulation layer 27 and the flat layer 28 are both conventional structures of the OLED display panel, which can be prepared by using any suitable material to achieve corresponding encapsulation and flat surface functions.
  • the filter unit specifically includes a first filter layer 23 and a second filter layer 24.
  • the first filter layer 23 is disposed on the light-emitting area 12 of the transparent substrate 25.
  • the flat layer 27 is stacked on the first filter layer 23 to form a flat surface on the surface of the device.
  • the light-emitting unit 21 is laminated and arranged on the flat surface of the flat layer 28 by a corresponding manufacturing process at a position corresponding to the first filter layer 23, and the light emitted from the bottom of the light-emitting unit 21 passes through the The first filter layer 23 performs filtering and spectral narrowing.
  • the light-emitting unit 21 may be positioned by a pixel definition layer 29 deposited on the flat surface.
  • the pixel defining layer 29 forms a recess for accommodating the organic electroluminescent material of the light-emitting unit 21 so as to determine the position of the light-emitting unit 21 and isolate it from other pixel units.
  • the encapsulation layer 27 is laminated on the light emitting unit 21.
  • the second filter layer 24 is further laminated and disposed on the encapsulation layer 27 to selectively filter the light emitted from the top of the light emitting unit 21 and narrow its spectrum.
  • the OLED double-sided display panel further includes a protective layer 30 covering the surface of the second filter layer 24.
  • the protective layer 30 has a good protective effect on the OLED double-sided display panel, prevents the external environment from affecting the internal functional devices of the OLED double-sided display panel, prolongs the service life and maintains better quality stability.
  • the film structure extending to the transparent region 11 includes the protective layer 30, the encapsulation layer 27, the flat layer 28, and The transparent substrate 25.
  • the protective layer 30, the encapsulation layer 27, the flat layer 28, and the transparent substrate 25 may have the same refractive index, so that The light can penetrate the transparent area 11 as much as possible to achieve the maximum transmittance.
  • the film structure located above the light emitting unit 21 includes a protective layer 30, a second filter layer 24 and an encapsulation layer 27.
  • the film structure under the light-emitting unit 21 includes a transparent substrate 25, a flat layer 28 and a first filter layer 23.
  • the thickness of these film structures can also be coordinated to reduce the influence of the thickness on the transmittance.
  • the sum of the thickness of the protective layer 30, the second filter layer 24, and the encapsulation layer 27 can be adjusted to the transparent substrate 25, the flat layer 28, and the first filter layer 23.
  • the difference of the sum of thickness is less than 20%.
  • the thickness of the protective layer, the second filter layer, the encapsulation layer, the transparent substrate, the flat layer, and the first filter layer satisfies the following condition:
  • a is the sum of the thickness of the protective layer, the second filter layer and the encapsulation layer
  • b is the thickness of the transparent substrate, the flat layer and the first filter layer
  • max (a, b) is the maximum value between a and b.
  • the sum of the thickness of the protective layer 30, the second filter layer 24, and the encapsulation layer 27 and the transparent substrate 25, the flat layer 28 and the first filter layer 23 When the sum of thickness is equal, the double-sided display effect is best.
  • the OLED double-sided display panel provided by the embodiments of the present application can ensure the transmittance of the transparent area to the greatest extent by adjusting and matching the film structure, improve the transparency of the display panel, and ensure as much as possible the light emitted by the two light-emitting surfaces The color does not produce significant variation.
  • the first filter layer and the second filter layer on both sides of the light-emitting unit can improve the color saturation problem caused by the weakening of the resonant cavity of the OLED display panel, so that the picture quality is well improved.
  • the additional shading unit can reduce the reflectivity of the metal wiring area and block the stray reflected light to improve the contrast of the picture.
  • FIG. 3 is a manufacturing process of the OLED double-sided display panel shown in FIG. 2. As shown in Fig. 3, the following preparation process can be adopted to realize the panel display structure shown in Fig. 2:
  • the protective layer, the encapsulation layer, the first filter layer, the second filter layer, the flat layer, and the transparent substrate can be selected from inorganic or organic transparent materials, or are composed of a mixture of two materials.
  • the inorganic material may be SiOx, SiNx, SiON, etc.
  • the organic material may be polyimide, cycloolefin, acrylic, siloxane, etc.
  • the OLED double-sided display panel obtained by the preparation method of the OLED double-sided display panel provided by the embodiment of the present application has a specially configured filter structure. It can focus the emitted light on a narrower band, thereby effectively solving the problem of reduced color saturation caused by the complete transparency of the double-sided display panel.
  • the emitted light has high color purity and good picture quality.

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Abstract

Disclosed is an OLED double-sided display panel, comprising: a light-emitting unit (21); a control circuit (22), wherein the control circuit (22) is connected to the light-emitting unit (21) and is used for controlling the light-emitting unit (21) to emit light; light filter units (23, 24) arranged on at least one light emergent side of the light-emitting unit (21), wherein the light filter units (23, 24) are used for filtering out light, emitted from the top and the bottom of the light-emitting unit (21), of at least part of wavebands; and a transparent substrate (25) for bearing the light-emitting unit (21), the control circuit (22) and the light filter units (23, 24). The OLED double-sided display panel has a special light filter structure and can focus emitted light on a relatively narrow waveband, such that the problem of the reduction of color saturation caused by a completely transparent double-sided display panel is effectively solved, and the emitted light has relatively high color purity, thereby ensuring picture quality.

Description

OLED双面显示面板OLED double-sided display panel 技术领域Technical field
本申请涉及显示技术领域，特别是涉及OLED双面显示面板。This application relates to the field of display technology, in particular to an OLED double-sided display panel.
背景技术Background technique
OLED(Organic Light-Emitting Diode,OLED)有机电致发光器件以其形体薄、面积大、柔性化等优点引起人们的广泛关注，在显示与照明领域有着重要应用。OLED (Organic Light-Emitting Diode, OLED) organic electroluminescent devices have attracted widespread attention due to their thin shape, large area, and flexibility, and have important applications in the field of display and lighting.
随着显示技术的发展，消费者除了要求显示面板具备反应速度快、分辨率高、画质细腻等特点外，也追求功能及显示模式上的突破。因此，可双面显示的OLED显示面板越来越受到用户的青睐。With the development of display technology, consumers not only require display panels with fast response speed, high resolution, and fine image quality, but also pursue breakthroughs in functions and display modes. Therefore, OLED display panels that can display on both sides are increasingly favored by users.
现有的双面显示的OLED显示面板由于阴极和阳极均处于透明状态会导致画面的色彩饱和度下降，影响画面品质。In the existing double-sided OLED display panel, since both the cathode and the anode are in a transparent state, the color saturation of the picture will decrease, which affects the picture quality.
发明内容Summary of the invention
本申请旨在提供一种OLED双面显示面板，以解决传统双面显示面板色彩饱和度不高的技术问题。This application aims to provide an OLED double-sided display panel to solve the technical problem of low color saturation of the traditional double-sided display panel.
为解决上述技术问题，本申请实施例采用的一个技术方案是：提供一种OLED双面显示面板。其中，所述OLED双面显示面板包括：发光单元；控制电路，所述控制电路与所述发光单元连接，用于控制所述发光单元发光；设置于所述发光单元至少一出光侧的滤光单元，所述滤光单元用于滤除从所述发光单元射出的至少一部分波段的光；以及透明基板，所述透明基板用于承载所述发光单元、所述控制电路以及所述滤光单元。In order to solve the above technical problems, a technical solution adopted in the embodiments of the present application is to provide an OLED double-sided display panel. Wherein, the OLED double-sided display panel includes: a light-emitting unit; a control circuit connected to the light-emitting unit for controlling the light-emitting unit to emit light; and a filter arranged on at least one light-emitting side of the light-emitting unit Unit, the filter unit is used to filter out at least a part of the wavelength of light emitted from the light-emitting unit; and a transparent substrate, the transparent substrate is used to carry the light-emitting unit, the control circuit and the filter unit .
可选地，所述滤光单元用于提升因微腔效应减弱而下降的色彩饱和度。Optionally, the filter unit is used to increase the color saturation that is reduced due to the weakening of the microcavity effect.
可选地，所述发光单元发出的一部分光线经过所述滤光单元之后沿第一方向从所述OLED双面显示面板的一面射出，另一部分光线沿第二方向从所述OLED显示面板的另一面射出，所述第一方向与所述第二方向相反。Optionally, a part of the light emitted by the light-emitting unit is emitted from one side of the OLED double-sided display panel in a first direction after passing through the filter unit, and another part of the light is emitted from another side of the OLED display panel in a second direction. Eject from one side, and the first direction is opposite to the second direction.
可选地，所述滤光单元分别设置于所述发光单元的相对两出光侧。Optionally, the filter units are respectively arranged on two opposite light-emitting sides of the light-emitting unit.
可选地，所述发光单元为白光发光单元；所述滤光单元由红色滤光材料、 绿色滤光材料以及蓝色滤光材料组合制备获得。Optionally, the light-emitting unit is a white light-emitting unit; the filter unit is prepared by a combination of a red filter material, a green filter material, and a blue filter material.
可选地，所述发光单元包括红色发光子单元、绿色发光子单元以及蓝色发光子单元；所述滤光单元包括与所述红色发光子单元相对设置的红色滤光子单元、与所述绿色发光子单元相对设置的绿色滤光子单元以及与所述蓝色发光子单元相对设置的蓝色滤光子单元。Optionally, the light emitting unit includes a red light emitting subunit, a green light emitting subunit, and a blue light emitting subunit; the filter unit includes a red filter subunit disposed opposite to the red light emitting subunit, and A green filter sub-unit arranged opposite to the light-emitting sub-unit and a blue filter sub-unit arranged opposite to the blue light-emitting sub-unit.
可选地，所述OLED双面显示面板还包括遮光单元，所述遮光单元成对设置，分别位于连接所述发光单元与所述控制电路的金属走线的顶部和底部，用于遮挡所述金属走线反射的光。Optionally, the OLED double-sided display panel further includes a shading unit, the shading units are arranged in pairs, respectively located at the top and bottom of the metal traces connecting the light-emitting unit and the control circuit, for shielding the Light reflected by metal traces.
可选地，所述遮光单元由金属材料或者有机材料制备。Optionally, the shading unit is made of a metal material or an organic material.
可选地，所述OLED双面显示面板包括若干个像素单位；每一个所述像素单位包括电路控制区、发光区和透明区。Optionally, the OLED double-sided display panel includes several pixel units; each of the pixel units includes a circuit control area, a light-emitting area, and a transparent area.
可选地，所述电路控制区、所述发光区及所述透明区沿垂直于出光方向的方向并排设置。Optionally, the circuit control area, the light-emitting area, and the transparent area are arranged side by side along a direction perpendicular to the light-emitting direction.
可选地，所述透明区包括多个叠层，所述透明区内的叠层均为有机材质且各叠层的折射率差值的绝对值小于0.05。Optionally, the transparent area includes a plurality of stacked layers, the stacked layers in the transparent area are all organic materials, and the absolute value of the refractive index difference of each stacked layer is less than 0.05.
可选地，在每一个所述像素单位中，所述控制电路设置在所述透明基板的所述电路控制区内，所述发光单元和所述滤光单元设置在所述透明基板的所述发光区内。Optionally, in each of the pixel units, the control circuit is provided in the circuit control area of the transparent substrate, and the light-emitting unit and the filter unit are provided in the transparent substrate. Light-emitting area.
可选地，所述发光单元与所述OLED双面显示面板的顶面和底面的距离相差异小于20％。Optionally, the difference in distance between the light emitting unit and the top surface and the bottom surface of the OLED double-sided display panel is less than 20%.
可选地，所述OLED双面显示面板还包括封装层和平坦层；所述封装层设置在所述成对设置的滤光单元的其中一个滤光单元与所述发光单元之间；所述平坦层设置在所述成对设置的滤光单元的另一个滤光单元与所述发光单元之间。Optionally, the OLED double-sided display panel further includes an encapsulation layer and a planarization layer; the encapsulation layer is disposed between one of the pair of filter units and the light-emitting unit; The flat layer is arranged between the other filter unit of the pair of filter units and the light emitting unit.
可选地，，所述其中一个滤光单元包括：第一滤光层，所述另一个滤光单包括：第二滤光层；所述第一滤光层设置在所述透明基板的发光区，所述平坦层层叠第一滤光层上，用于形成平坦表面；Optionally, the one of the filter units includes: a first filter layer, and the other filter unit includes: a second filter layer; the first filter layer is arranged on the transparent substrate to emit light Zone, the flat layer is laminated on the first filter layer to form a flat surface;
所述发光单元层叠设置在所述平坦层上，所述封装层层叠设置在所述发光单元的顶部；The light-emitting unit is stacked on the flat layer, and the encapsulation layer is stacked on the top of the light-emitting unit;
所述第二滤光层层叠设置在所述封装层上。The second filter layer is stacked on the encapsulation layer.
可选地，所述OLED双面显示面板还包括像素定义层；Optionally, the OLED double-sided display panel further includes a pixel definition layer;
所述像素定义层设置在所述平坦层形成的平坦表面上，用于形成定位所述发光单元的凹陷。The pixel definition layer is disposed on the flat surface formed by the flat layer, and is used to form a recess for positioning the light-emitting unit.
可选地，所述OLED双面显示面板还包括保护层；所述保护层覆盖在所述第二滤光层的表面。Optionally, the OLED double-sided display panel further includes a protective layer; the protective layer covers the surface of the second filter layer.
可选地，所述保护层、所述第二滤光层、所述封装层、所述透明基板、所述平坦层以及所述第一滤光层的厚度满足如下条件：|a-b|＜0.2*max(a，b)，a为所述保护层、所述第二滤光层以及所述封装层的厚度之和，b为所述透明基板、所述平坦层以及所述第一滤光层的厚度之和，max(a，b)为a和b之间的最大值。Optionally, the thicknesses of the protective layer, the second filter layer, the encapsulation layer, the transparent substrate, the flat layer, and the first filter layer satisfy the following conditions: |ab|<0.2 *max(a,b), a is the sum of the thickness of the protective layer, the second filter layer and the encapsulation layer, b is the transparent substrate, the flat layer and the first filter The sum of the thicknesses of the layers, max(a, b) is the maximum value between a and b.
可选地，所述保护层、所述封装层、所述平坦层以及所述透明基板具有相同的折射率。Optionally, the protective layer, the encapsulation layer, the flat layer and the transparent substrate have the same refractive index.
本申请实施例提供的OLED双面显示面板，具有特别设置的滤光结构。其可以将射出的光聚焦于一个较窄的波段从而有效的解决双面显示面板因完全透明而造成色彩饱和度降低的问题，射出的光色纯度较高，画面品质可以得到保证。The OLED double-sided display panel provided by the embodiment of the present application has a specially configured filter structure. It can focus the emitted light on a narrower band, thereby effectively solving the problem of reduced color saturation caused by the complete transparency of the double-sided display panel. The emitted light has high color purity and the picture quality can be guaranteed.
附图说明Description of the drawings
图1是本申请实施例提供的双面透明显示面板在一个像素单位上的结构示意图；FIG. 1 is a schematic diagram of the structure of a double-sided transparent display panel provided on a pixel unit according to an embodiment of the present application;
图2是本申请实施例提供的OLED双面显示面板的结构示意图；2 is a schematic structural diagram of an OLED double-sided display panel provided by an embodiment of the present application;
图3是图2所示的OLED双面显示面板的制备流程图。FIG. 3 is a manufacturing flow chart of the OLED double-sided display panel shown in FIG. 2.
具体实施方式Detailed ways
为了使本申请的目的、方案及优点更加清楚明白，以下结合实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。此外，下面所描述的本申请不同实施例中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。In order to make the objectives, solutions, and advantages of the present application clearer, the application will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, and not used to limit the application. In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as they do not conflict with each other.
“微腔效应”是解决OLED器件的发光光谱过宽的有效途径。其主要是利用 金属电极的反射作用和合理的光学微腔结构，使得有机电致发光材料发出的光在器件内部来回反射，最终只有特定波长的光可以从器件中射出。由此，利用“微腔效应”可以起到窄化发光光谱，提升光色纯度和色彩饱和度的优良效果。The "microcavity effect" is an effective way to solve the excessively broad emission spectrum of OLED devices. It mainly uses the reflection effect of metal electrodes and a reasonable optical microcavity structure to make the light emitted by the organic electroluminescent material reflect back and forth inside the device, and finally only light of a specific wavelength can be emitted from the device. As a result, the use of the "microcavity effect" can achieve an excellent effect of narrowing the luminescence spectrum and improving the color purity and color saturation.
本发明实施例的双面显示面板由多个纵横排列的像素单位组成。每个像素单位发出与控制信号相对应颜色的光而组成最终的显示图像。如图1所示，本发明实施例的双面透明显示面板包括依次设置的透明区11、发光区12以及电路控制区13，所述电路控制区11、所述发光区12及所述透明区13沿垂直于出光方向的方向并排设置。The double-sided display panel of the embodiment of the present invention is composed of a plurality of pixel units arranged vertically and horizontally. Each pixel unit emits light of a color corresponding to the control signal to form the final display image. As shown in FIG. 1, the double-sided transparent display panel of the embodiment of the present invention includes a transparent area 11, a light-emitting area 12, and a circuit control area 13 arranged in sequence. The circuit control area 11, the light-emitting area 12, and the transparent area 13 are arranged side by side along the direction perpendicular to the light emitting direction.
透明区11是具有较高透光率的部分，用以形成透明显示的效果。由于透明区1包括多个叠层。在较佳的实施例中，为了保障透明显示的效果，保证透明区具有足够的透明度，可以控制所述透明区各叠层的折射率差值的绝对值低于设定的阈值，使其在整个透明区内大致保持一致。The transparent area 11 is a part with a higher light transmittance to form a transparent display effect. Since the transparent area 1 includes multiple laminated layers. In a preferred embodiment, in order to ensure the effect of transparent display and ensure that the transparent area has sufficient transparency, the absolute value of the refractive index difference of each layer of the transparent area can be controlled to be lower than the set threshold, so that it is in The entire transparent area is roughly consistent.
较佳地，该设定的阈值为0.05，即各叠层的折射率差值的绝对值小于0.05能够保证透明区不同叠层之间的折射率不出现显著变化，影响透明显示效果。Preferably, the set threshold value is 0.05, that is, the absolute value of the refractive index difference of each laminated layer is less than 0.05 to ensure that the refractive index between different laminated layers in the transparent area does not change significantly, which affects the transparent display effect.
具体可以采用任何合适的方式来实现上述透明区的折射率的设置要求。例如，采用具有相近折射率的有机材料来制备形成各个叠层，以满足各叠层的折射率差值的绝对值小于0.05。Specifically, any suitable method can be used to achieve the above-mentioned setting requirement of the refractive index of the transparent region. For example, organic materials with similar refractive indices are used to prepare each laminate to satisfy that the absolute value of the refractive index difference of each laminate is less than 0.05.
发光区12是容纳OLED发光器件等发光单元的部分。电路控制区13是容纳放置控制电路的区域(例如TFT组成的控制电路)，其与发光区12的发光单元连接，控制施加在发光单元上的供电电流以实现对显示画面的控制。The light-emitting area 12 is a part that accommodates light-emitting units such as OLED light-emitting devices. The circuit control area 13 is an area for accommodating and placing control circuits (for example, a control circuit composed of TFTs), which is connected to the light-emitting unit of the light-emitting area 12 and controls the power supply current applied to the light-emitting unit to control the display screen.
为了达到双面显示的效果，电路控制区13布置在所述发光区12的一侧，以使得发光区12发出的光线分别可以从像素单位的两面射出。In order to achieve the effect of double-sided display, the circuit control area 13 is arranged on one side of the light-emitting area 12, so that the light emitted by the light-emitting area 12 can be emitted from both sides of the pixel unit.
本申请实施例提供的OLED双面显示面板可以补偿微腔效应的减弱，保持色彩饱和度和画面质量。图2为本申请实施例提供的OLED双面显示面板的结构示意图。在图2中，为陈述简便仅以单个像素单位的横截面示意图为例进行展示。The OLED double-sided display panel provided by the embodiments of the present application can compensate for the weakening of the microcavity effect and maintain color saturation and picture quality. FIG. 2 is a schematic structural diagram of an OLED double-sided display panel provided by an embodiment of the application. In FIG. 2, for simplicity of presentation, only a schematic cross-sectional view of a single pixel unit is taken as an example for display.
如图2所示，该OLED双面显示面板包括：发光单元21，控制电路22、滤光单元(23,24)以及透明基板25。As shown in FIG. 2, the OLED double-sided display panel includes: a light emitting unit 21, a control circuit 22, a filter unit (23, 24) and a transparent substrate 25.
透明基板25是整个OLED双面显示面板的承载主体，用于形成支撑结构承载所述发光单元21、所述控制电路22以及所述滤光单元(23，24)等器件。在 本实例中，为了满足双面显示的要求，选择使用透明基板以确保光线可以从底部射出。The transparent substrate 25 is the carrying body of the entire OLED double-sided display panel, and is used to form a supporting structure to carry the light emitting unit 21, the control circuit 22, and the filter unit (23, 24) and other devices. In this example, in order to meet the requirements of double-sided display, a transparent substrate is selected to ensure that light can be emitted from the bottom.
在另一些实施例中，还可以根据实际情况的需要，调整使用各种不同类型的基板。例如，可以选择使用透明柔性基板来满足显示面板的折叠或者弯折等使用需求。In other embodiments, various types of substrates can be adjusted and used according to actual needs. For example, a transparent flexible substrate can be selected to meet the use requirements such as folding or bending of the display panel.
所述发光单元21是显示的核心，用于在电流控制下发光。该发光单元21具体可以采用任何合适结构的OLED器件。典型的，可以由阳极、阴极以及夹在阳极和阴极之间的有机电致发光材料层所组成。The light-emitting unit 21 is the core of the display and is used to emit light under current control. Specifically, the light-emitting unit 21 can adopt an OLED device of any suitable structure. Typically, it can be composed of an anode, a cathode, and an organic electroluminescent material layer sandwiched between the anode and the cathode.
所述控制电路22与所述发光单元21电连接，用于控制施加在所述发光单元21上的电流。所述控制电路22具体可以根据实际情况的需要采用任何合适类型的控制电路结构实现对发光单元21的控制，从而最终在OLED双面显示面板中显示相应的画面。较佳地，所述控制电路22可以是沉积在透明基板上的TFT器件组成的控制电路，用于根据不同的控制信号调整流过所述发光单元上的电流，从而改变所述发光单元21发出的光。The control circuit 22 is electrically connected to the light emitting unit 21 for controlling the current applied to the light emitting unit 21. The control circuit 22 may specifically adopt any suitable type of control circuit structure to control the light-emitting unit 21 according to actual needs, so as to finally display a corresponding picture on the OLED double-sided display panel. Preferably, the control circuit 22 may be a control circuit composed of TFT devices deposited on a transparent substrate, and is used to adjust the current flowing through the light-emitting unit according to different control signals, thereby changing the emission of the light-emitting unit 21. Of light.
本实施例中，所述滤光单元23，24是成对设置的结构，分别位于所述发光单元21的靠近顶部的一侧(滤光单元24)和靠近底部的一侧(滤光单元23)。其可以选用任何合适类型的滤光材料制备形成，分别用于滤除从所述发光单元21的顶部和底部射出的至少一部分波段的光，其具体选用的材料或者结构设置可以根据实际情况而确定，例如根据需要滤除的波段而选择使用相应的滤光材料。In this embodiment, the filter units 23, 24 are arranged in pairs, respectively located on the side near the top of the light-emitting unit 21 (filter unit 24) and the side near the bottom (filter unit 23). ). It can be made of any suitable type of filter material, which is used to filter at least a part of the wavelength of light emitted from the top and bottom of the light-emitting unit 21. The specific materials or structure settings can be determined according to actual conditions. , For example, choose the corresponding filter material according to the waveband that needs to be filtered.
在本实施例中，额外设置的滤光单元23，24可以滤除部分波段的光，选择性将一个较窄的目标波段的光从OLED显示面板中射出，实现与微腔效应类似的，收窄光谱的效果。滤光单元23，24可以提升因微腔效应减弱而下降的色彩饱和度，因此，具有该结构设置的OLED双面显示面板可以很好的解决因微腔效应减弱而导致所述发光单元21射出的光的光谱较宽，色彩饱和度下降的问题。In this embodiment, the additional filter units 23 and 24 can filter out some wavelengths of light, and selectively emit light of a narrower target wavelength band from the OLED display panel to achieve a similar effect to the microcavity effect. Narrow spectrum effect. The filter units 23, 24 can increase the color saturation that is reduced due to the weakening of the microcavity effect. Therefore, the OLED double-sided display panel with this structure can solve the problem of the light emitting unit 21 being emitted due to the weakening of the microcavity effect. The light spectrum is wider and the color saturation is reduced.
其中，图1的滤光单元23，24仅用于举例说明OLED双面显示面板的结构，本领域技术人员可以理解的是，还可以减省其中一侧的滤光单元(减省滤光单元23或者减省滤光单元24)来得到设置于所述发光单元一出光侧的滤光单元(滤光单元24或滤光单元23)，上述变形结构的OLED双面显示面板同样可以满足滤除从发光单元21射出的一部分波段的光。Among them, the filter units 23 and 24 in FIG. 1 are only used to illustrate the structure of the OLED double-sided display panel. Those skilled in the art will understand that the filter unit on one side can also be reduced (the filter unit is reduced). 23 or reduce the filter unit 24) to obtain the filter unit (the filter unit 24 or the filter unit 23) arranged on the light-emitting side of the light-emitting unit. The OLED double-sided display panel with the above-mentioned deformation structure can also satisfy the filter Part of the wavelength band light emitted from the light emitting unit 21.
例如，在减省滤光单元24之后，则所述发光单元21发出的一部分光线经过所述滤光单元23之后沿第一方向从所述OLED双面显示面板的一面射出，另一部分光线则沿第二方向从所述OLED显示面板的另一面射出，且第一方向与第二方向相反，需要说明的是，此处的“第一方向”和“第二方向”仅仅为了区分发光单元从两个相反的方向出光而采用的不同的命名。For example, after the filter unit 24 is reduced, a part of the light emitted by the light-emitting unit 21 is emitted from one side of the OLED double-sided display panel in the first direction after passing through the filter unit 23, and another part of the light is emitted along the The second direction is emitted from the other side of the OLED display panel, and the first direction is opposite to the second direction. It should be noted that the "first direction" and "second direction" here are only used to distinguish the light emitting unit from the two Different names are used for the light in the opposite direction.
请继续参阅图1，本领域技术人员可以理解的，在显示面板的每一个像素单位中，控制电路区13根据输入的控制信号，对发光区12产生三原色(红光、蓝光以及绿光)的比例进行控制，从而使得像素单位可以显示任意的颜色。因此，发光区12需要由红光区域121、绿光区域122以及蓝光区域123组成。Please continue to refer to FIG. 1, those skilled in the art can understand that in each pixel unit of the display panel, the control circuit area 13 generates three primary colors (red light, blue light, and green light) for the light-emitting area 12 according to the input control signal. The proportion is controlled so that the pixel unit can display any color. Therefore, the light-emitting area 12 needs to be composed of a red light area 121, a green light area 122, and a blue light area 123.
所述发光单元21和所述滤光单元22具体可以采用多种配合的结构来满足在所述发光区12产生三原色的需求。在一些实施例中，如图2所示，所述发光单元21可以为白光发光单元。所述滤光单元22则由红色滤光材料、绿色滤光材料以及蓝色滤光材料组合制备获得。The light-emitting unit 21 and the filter unit 22 may specifically adopt a variety of coordinated structures to meet the requirements of generating three primary colors in the light-emitting area 12. In some embodiments, as shown in FIG. 2, the light emitting unit 21 may be a white light emitting unit. The filter unit 22 is prepared by combining a red filter material, a green filter material, and a blue filter material.
这样的，所述发光单元21发出的白光经过所述红色滤光材料的部分时，可产生红光；经过所述绿色滤光材料的部分时，可产生绿光；而所述发光单元21发出的白光在经过所述蓝色滤光材料时，可产生蓝光。In this way, when the white light emitted by the light-emitting unit 21 passes through the portion of the red filter material, it can generate red light; when it passes through the portion of the green filter material, it can generate green light; and the light-emitting unit 21 emits When the white light passes through the blue filter material, blue light can be generated.
在另一些实施例中，所述发光单元21还可以包括红色发光子单元、绿色发光子单元以及蓝色发光子单元，所述红色发光子单元、所述绿色发光子单元以及所述蓝色发光子单元可以分别通过不同的有机电致发光材料制成。相对应地，所述滤光单元22包括与所述红色发光子单元相对设置的红色滤光子单元、与所述绿色发光子单元相对设置的绿色滤光子单元以及与所述蓝色发光子单元相对设置的蓝色滤光子单元，从而在所述发光区12产生三原色。In other embodiments, the light emitting unit 21 may further include a red light emitting subunit, a green light emitting subunit, and a blue light emitting subunit, the red light emitting subunit, the green light emitting subunit, and the blue light emitting subunit. The subunits can be made of different organic electroluminescent materials. Correspondingly, the filter unit 22 includes a red filter subunit disposed opposite to the red light emitting subunit, a green filter subunit disposed opposite to the green light emitting subunit, and opposite to the blue light emitting subunit. The blue filter subunit is arranged to generate three primary colors in the light-emitting area 12.
本领域技术人员也可以采用其他任何合适的发光单元和滤光单元，只需要能够满足在所述发光区12产生三原色的要求即可。所有对发光单元和滤光单元的改变、替换或者组合均属于本技术领域的常规替换。例如，所述发光单元还可以是蓝光发光单元，所述滤光单元则由量子点红色滤光子单元和量子点绿色滤光子单元组合形成。Those skilled in the art can also use any other suitable light-emitting unit and filter unit, as long as it can meet the requirements of generating three primary colors in the light-emitting area 12. All changes, replacements or combinations of the light-emitting unit and the filter unit belong to conventional replacements in the technical field. For example, the light emitting unit may also be a blue light emitting unit, and the filter unit is formed by a combination of a quantum dot red filter unit and a quantum dot green filter unit.
其中，为了实现信号传输或者供电等目的，在所述OLED显示面板的结构中还存在有许多的金属走线，例如用于连接所述控制电路23与所述发光单元21的金属连接线。这些金属走线分布在特定的金属走线区，具有较强的反射率， 会对显示画面造成一定的影响。Among them, in order to achieve the purpose of signal transmission or power supply, there are many metal wires in the structure of the OLED display panel, such as metal connecting wires for connecting the control circuit 23 and the light-emitting unit 21. These metal traces are distributed in specific metal trace areas and have strong reflectivity, which will have a certain impact on the display screen.
在一较佳实施例中，如图2所示，所述OLED显示面板还可以包括用于降低金属走线区反射率的遮光单元26。所述遮光单元26同样也采用成对设置的方式，分别位于连接所述发光单元21与所述控制电路22的金属走线的顶部和底部，用于遮挡所述金属走线反射的光。In a preferred embodiment, as shown in FIG. 2, the OLED display panel may further include a shading unit 26 for reducing the reflectivity of the metal wiring area. The shading units 26 are also arranged in pairs, respectively located at the top and bottom of the metal wiring connecting the light-emitting unit 21 and the control circuit 22, for shielding light reflected by the metal wiring.
通过额外设置的遮光单元26，可以避免这些杂散的反射光从所述OLED显示面板的顶部或者底部射出，影响画面显示品质和造成透明度降低的问题。The additional shading unit 26 can prevent the stray reflected light from being emitted from the top or bottom of the OLED display panel, affecting the display quality of the picture and causing the problem of reduced transparency.
具体的，可以采用任何合适类型的金属材料或者有机材料制备获得所述遮光单元26，只需要能够遮挡杂散的发射光即可。例如，可以采用铬或者其氧化物、丙烯酸、聚酰亚胺或者合适的热塑性高分子材料。当然，也可以选用其他合适的金属氧化物。Specifically, any suitable type of metal material or organic material can be used to prepare the shading unit 26, as long as it can shield stray emitted light. For example, chromium or its oxide, acrylic, polyimide or suitable thermoplastic polymer materials can be used. Of course, other suitable metal oxides can also be selected.
请继续参阅图2，在所述发光区12中，从顶面和底面射出的光线还有可能因穿过的膜层结构不相同而产生显著的色彩差异，影响双面显示效果。Please continue to refer to FIG. 2, in the light-emitting area 12, the light emitted from the top surface and the bottom surface may also produce significant color differences due to the different film structures passing through, which affects the double-sided display effect.
为了进一步的提高双面透明的显示效果，在另一些实施例中，还可以进一步的对发光区12的结构进行调整，控制所述发光单元21与所述OLED双面显示面板的顶面和底面的距离差异小于20％。通过控制所述发光单元21与顶面和底面之间的距离差异，确保光线在两侧不会发生显著不同的折射变化，可以降低双面显示的差异，其中，在所述发光单元21与所述OLED双面显示面板的顶面和底面的距离相等时，双面显示效果最佳。In order to further improve the double-sided transparent display effect, in other embodiments, the structure of the light-emitting area 12 can be further adjusted to control the top and bottom surfaces of the light-emitting unit 21 and the OLED double-sided display panel. The distance difference is less than 20%. By controlling the distance difference between the light-emitting unit 21 and the top and bottom surfaces, it is ensured that the light will not undergo significantly different refraction changes on both sides, and the difference in double-sided display can be reduced. When the distance between the top surface and the bottom surface of the OLED double-sided display panel is equal, the double-sided display effect is the best.
应当说明的是，在本申请的说明书中，为陈述简便，使用“底面”或“底部”表示所述透明基板25所在的一侧。而使用“顶面”或“顶部”则表示与“底面”和“底部”相对的一侧。所述“底面”和“顶面”并不对所述OLED双面显示面板的结构造成限制，其可以任意互换或者使用其他的词语以表示所述OLED双面显示面板相对的两个出光面。It should be noted that in the specification of the present application, for simplicity of presentation, “bottom” or “bottom” is used to indicate the side where the transparent substrate 25 is located. The use of "top" or "top" means the side opposite to "bottom" and "bottom". The "bottom surface" and "top surface" do not limit the structure of the OLED double-sided display panel, and they can be interchanged arbitrarily or use other words to indicate the two opposite light-emitting surfaces of the OLED double-sided display panel.
在另一些实施例中，所述OLED双面显示面板还包括：封装层27以及平坦层28。In other embodiments, the OLED double-sided display panel further includes: an encapsulation layer 27 and a flat layer 28.
其中，所述封装层27设置在所述滤光单元24和所述发光单元21之间，所述平坦层28设置在所述滤光单元23与所述发光单元21之间。Wherein, the encapsulation layer 27 is provided between the filter unit 24 and the light emitting unit 21, and the flat layer 28 is provided between the filter unit 23 and the light emitting unit 21.
所述封装层27和所述平坦层28均是所述OLED显示面板的常规结构，其可以采用任何合适的材料制备获得，以实现相应的封装和提供平坦表面的功能。The encapsulation layer 27 and the flat layer 28 are both conventional structures of the OLED display panel, which can be prepared by using any suitable material to achieve corresponding encapsulation and flat surface functions.
如图2所示，所述滤光单元具体包括第一滤光层23和第二滤光层24。所述第一滤光层23设置在所述透明基板25的所述发光区12。所述平坦层27则层叠设置在所述第一滤光层23上，重新在器件的表面形成一个平坦表面。As shown in FIG. 2, the filter unit specifically includes a first filter layer 23 and a second filter layer 24. The first filter layer 23 is disposed on the light-emitting area 12 of the transparent substrate 25. The flat layer 27 is stacked on the first filter layer 23 to form a flat surface on the surface of the device.
所述发光单元21通过相应的制程工艺层叠设置在所述平坦层28的平坦表面，与所述第一滤光层23相对应的位置上，所述发光单元21从底部射出的光经过所述第一滤光层23进行过滤和光谱窄化。The light-emitting unit 21 is laminated and arranged on the flat surface of the flat layer 28 by a corresponding manufacturing process at a position corresponding to the first filter layer 23, and the light emitted from the bottom of the light-emitting unit 21 passes through the The first filter layer 23 performs filtering and spectral narrowing.
具体的，所述发光单元21具体可以通过沉积在所述平坦表面的像素定义层29来实现定位。所述像素定义层29形成一个用于容纳所述发光单元21的有机电致发光材料的凹陷从而确定所述发光单元21的位置并将其与其他的像素单位之间相互隔离。Specifically, the light-emitting unit 21 may be positioned by a pixel definition layer 29 deposited on the flat surface. The pixel defining layer 29 forms a recess for accommodating the organic electroluminescent material of the light-emitting unit 21 so as to determine the position of the light-emitting unit 21 and isolate it from other pixel units.
所述封装层27则覆盖层叠在所述发光单元21之上。所述第二滤光层24进一步的层叠设置在所述封装层27之上，用于选择性过滤从所述发光单元21的顶部射出的光，窄化其光谱。The encapsulation layer 27 is laminated on the light emitting unit 21. The second filter layer 24 is further laminated and disposed on the encapsulation layer 27 to selectively filter the light emitted from the top of the light emitting unit 21 and narrow its spectrum.
在另一些实施例中，所述OLED双面显示面板还包括覆盖在所述第二滤光层24的表面的保护层30。In some other embodiments, the OLED double-sided display panel further includes a protective layer 30 covering the surface of the second filter layer 24.
所述保护层30起到对所述OLED双面显示面板的良好保护作用，避免外界环境对于所述OLED双面显示面板的内部功能器件造成影响，延长使用寿命和保持较好的质量稳定性。The protective layer 30 has a good protective effect on the OLED double-sided display panel, prevents the external environment from affecting the internal functional devices of the OLED double-sided display panel, prolongs the service life and maintains better quality stability.
可以理解的，图2所使用的所述OLED双面显示面板的结构中，延伸至所述透明区11的膜层结构包括所述保护层30、所述封装层27、所述平坦层28以及所述透明基板25。It is understandable that in the structure of the OLED double-sided display panel used in FIG. 2, the film structure extending to the transparent region 11 includes the protective layer 30, the encapsulation layer 27, the flat layer 28, and The transparent substrate 25.
因此，为了保证所述透明区11具有足够的透明度，较佳地，可以令所述保护层30、所述封装层27、所述平坦层28以及所述透明基板25具有相同的折射率，这样光线可以尽可能的穿透所述透明区11，达到最大的穿透率。Therefore, in order to ensure that the transparent region 11 has sufficient transparency, preferably, the protective layer 30, the encapsulation layer 27, the flat layer 28, and the transparent substrate 25 may have the same refractive index, so that The light can penetrate the transparent area 11 as much as possible to achieve the maximum transmittance.
进一步地，在图2所示的所述OLED双面显示面板的结构中，位于所述发光单元21上方的膜层结构包括保护层30、第二滤光层24以及封装层27。而位于所述发光单元21下方的膜层结构则包括透明基板25、平坦层28以及第一滤光层23。Furthermore, in the structure of the OLED double-sided display panel shown in FIG. 2, the film structure located above the light emitting unit 21 includes a protective layer 30, a second filter layer 24 and an encapsulation layer 27. The film structure under the light-emitting unit 21 includes a transparent substrate 25, a flat layer 28 and a first filter layer 23.
如上所记载的，为了减少双面显示过程中，顶面和底面显示画面因膜层而产生的色彩差异，还可以协调这些膜层结构的厚度，以将厚度对穿透率的影响 降低。具体地，可以调整所述保护层30、所述第二滤光层24以及所述封装层27的厚度之和与所述透明基板25、所述平坦层28以及所述第一滤光层23的厚度之和的差异小于20％。As described above, in order to reduce the color difference between the top and bottom display images due to the film layers in the double-sided display process, the thickness of these film structures can also be coordinated to reduce the influence of the thickness on the transmittance. Specifically, the sum of the thickness of the protective layer 30, the second filter layer 24, and the encapsulation layer 27 can be adjusted to the transparent substrate 25, the flat layer 28, and the first filter layer 23. The difference of the sum of thickness is less than 20%.
即所述保护层、所述第二滤光层、所述封装层、所述透明基板、所述平坦层以及所述第一滤光层的厚度满足如下条件：|a-b|＜0.2*max(a，b)，a为所述保护层、所述第二滤光层以及所述封装层的厚度之和，b为所述透明基板、所述平坦层以及所述第一滤光层的厚度之和，max(a，b)为a和b之间的最大值。That is, the thickness of the protective layer, the second filter layer, the encapsulation layer, the transparent substrate, the flat layer, and the first filter layer satisfies the following condition: |ab|<0.2*max( a, b), a is the sum of the thickness of the protective layer, the second filter layer and the encapsulation layer, b is the thickness of the transparent substrate, the flat layer and the first filter layer The sum, max (a, b) is the maximum value between a and b.
较佳地，在所述保护层30、所述第二滤光层24以及所述封装层27的厚度之和与所述透明基板25、所述平坦层28以及所述第一滤光层23的厚度之和相等时，双面显示效果最佳。Preferably, the sum of the thickness of the protective layer 30, the second filter layer 24, and the encapsulation layer 27 and the transparent substrate 25, the flat layer 28 and the first filter layer 23 When the sum of thickness is equal, the double-sided display effect is best.
本申请实施例提供的OLED双面显示面板，通过调整和搭配膜层结构，可以最大限度的保证透明区的穿透率，提高显示面板的透明度，而且尽可能的确保两个出光面射出的光的色彩不会产生显著的变异。The OLED double-sided display panel provided by the embodiments of the present application can ensure the transmittance of the transparent area to the greatest extent by adjusting and matching the film structure, improve the transparency of the display panel, and ensure as much as possible the light emitted by the two light-emitting surfaces The color does not produce significant variation.
另外，在发光单元的两侧合理设置第一滤光层和第二滤光层可以改善因OLED显示面板共振腔减弱而导致的色彩饱和度下降的问题，令画面品质得到了很好的改善。而额外设置的遮光单元可以降低金属走线区的反射率，遮挡杂散的反射光以提升画面的对比度。In addition, reasonably arranging the first filter layer and the second filter layer on both sides of the light-emitting unit can improve the color saturation problem caused by the weakening of the resonant cavity of the OLED display panel, so that the picture quality is well improved. The additional shading unit can reduce the reflectivity of the metal wiring area and block the stray reflected light to improve the contrast of the picture.
图3为制备图2所示的OLED双面显示面板的制备工艺过程。如图3所示，其可以采用如下制备过程来实现图2所示的面板显示结构：FIG. 3 is a manufacturing process of the OLED double-sided display panel shown in FIG. 2. As shown in Fig. 3, the following preparation process can be adopted to realize the panel display structure shown in Fig. 2:
310、制备透明基板。310. Prepare a transparent substrate.
320、在所述透明基板与金属走线区对应的位置，沉积遮光材料以制备获得遮光单元。320. At a position corresponding to the transparent substrate and the metal wiring area, deposit a shading material to prepare a shading unit.
330、在所述透明基板与发光区对应的位置，制备形成所述第一滤光层。330. Prepare and form the first filter layer at a position corresponding to the transparent substrate and the light-emitting area.
340、通过遮罩或者光刻等方式，在所述透明基板与电路控制区对应的位置上沉积TFT器件，形成控制电路。340. Depositing a TFT device on the position corresponding to the circuit control area of the transparent substrate by masking or photolithography to form a control circuit.
350、在所述发光区和所述透明区的位置，制备所述平坦层以提供平整的表面。350. At the positions of the light-emitting area and the transparent area, prepare the flat layer to provide a flat surface.
360、在所述平坦层的平整表面上制备透明阳极。360. Prepare a transparent anode on the flat surface of the flat layer.
370、在透明阳极上制备像素定义层，以形成用于容纳有机电致发光材料的凹陷。370. Prepare a pixel definition layer on the transparent anode to form a recess for accommodating the organic electroluminescent material.
380、在所述凹陷内沉积有机电致发光材料。380. Deposit an organic electroluminescent material in the recess.
390、在所述有机电致发光材料之上制备透明阴极，形成所述发光单元。390. Prepare a transparent cathode on the organic electroluminescent material to form the light-emitting unit.
400、在所述发光单元之上，采用相应的封装材料，封装形成封装层。400. Using corresponding packaging materials on the light-emitting unit to form a packaging layer.
410、在所述封装层与所述金属走线区对应的位置，沉积遮光材料以制备获得所述遮光单元。410. Deposit a light-shielding material at a position corresponding to the metal wiring area on the packaging layer to prepare the light-shielding unit.
420、在所述封装层与所述发光单元对应的位置制备所述第二滤光层。420. Prepare the second filter layer at a position corresponding to the encapsulation layer and the light-emitting unit.
430、在整个结构之上，形成所述保护层。430. Form the protective layer on the entire structure.
其中，所述保护层、封装层、第一滤光层、第二滤光层、平坦层以及透明基板等均可以选择无机或有机透明材料,或由两种材料混合交叠构成。例如，所述无机材料可以是SiOx,SiNx,SiON等,所述有机材料可以是聚酰亚胺、环烯烃、丙烯酸、硅氧烷等。Wherein, the protective layer, the encapsulation layer, the first filter layer, the second filter layer, the flat layer, and the transparent substrate can be selected from inorganic or organic transparent materials, or are composed of a mixture of two materials. For example, the inorganic material may be SiOx, SiNx, SiON, etc., and the organic material may be polyimide, cycloolefin, acrylic, siloxane, etc.
本申请实施例提供的OLED双面显示面板的制备方法得到的OLED双面显示面板具有特别设置的滤光结构。其可以将射出的光聚焦于一个较窄的波段从而有效的解决双面显示面板因完全透明而造成色彩饱和度降低的问题，射出的光色纯度较高，具有较好的画面品质。The OLED double-sided display panel obtained by the preparation method of the OLED double-sided display panel provided by the embodiment of the present application has a specially configured filter structure. It can focus the emitted light on a narrower band, thereby effectively solving the problem of reduced color saturation caused by the complete transparency of the double-sided display panel. The emitted light has high color purity and good picture quality.
以上所述仅为本申请的实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。The above are only examples of this application, and do not limit the scope of this application. Any equivalent structure or equivalent process transformation made using the content of the description and drawings of this application, or directly or indirectly applied to other related technologies In the same way, all fields are included in the scope of patent protection of this application.

Claims (19)

  1. 一种OLED双面显示面板，其特征在于，包括：An OLED double-sided display panel, characterized in that it comprises:
    发光单元；Light-emitting unit
    控制电路，所述控制电路与所述发光单元连接，用于控制所述发光单元发光；A control circuit, which is connected to the light-emitting unit and is used to control the light-emitting unit to emit light;
    设置于所述发光单元至少一出光侧的滤光单元，所述滤光单元用于滤除从所述发光单元射出的至少一部分波段的光；以及A filter unit disposed on at least one light-emitting side of the light-emitting unit, the filter unit being used to filter at least a part of the light of the wavelength band emitted from the light-emitting unit; and
    透明基板，所述透明基板用于承载所述发光单元、所述控制电路以及所述滤光单元。The transparent substrate is used to carry the light emitting unit, the control circuit and the filter unit.
  2. 根据权利要求1所述的OLED双面显示面板，其特征在于，所述滤光单元用于提升因微腔效应减弱而下降的色彩饱和度。The OLED double-sided display panel of claim 1, wherein the filter unit is used to increase the color saturation that is reduced due to the weakening of the microcavity effect.
  3. 根据权利要求1所述的OLED双面显示面板，其特征在于，所述发光单元发出的一部分光线经过所述滤光单元之后沿第一方向从所述OLED双面显示面板的一面射出，另一部分光线沿第二方向从所述OLED显示面板的另一面射出，所述第一方向与所述第二方向相反。The OLED double-sided display panel of claim 1, wherein a part of the light emitted by the light-emitting unit passes through the filter unit and is emitted from one side of the OLED double-sided display panel in a first direction, and the other part The light is emitted from the other side of the OLED display panel in a second direction, and the first direction is opposite to the second direction.
  4. 根据权利要求1所述的OLED双面显示面板，其特征在于，所述滤光单元包括两个，分别设置于所述发光单元的相对两出光侧。The OLED double-sided display panel according to claim 1, wherein the filter unit comprises two light-emitting units, which are respectively arranged on two opposite light-emitting sides of the light-emitting unit.
  5. 根据权利要求1所述的OLED双面显示面板，其特征在于，所述发光单元为白光发光单元；所述滤光单元包括红色滤光材料、绿色滤光材料以及蓝色滤光材料。The OLED double-sided display panel according to claim 1, wherein the light emitting unit is a white light emitting unit; and the filter unit includes a red filter material, a green filter material, and a blue filter material.
  6. 根据权利要求1所述的OLED双面显示面板，其特征在于，所述发光单元包括红色发光子单元、绿色发光子单元以及蓝色发光子单元；The OLED double-sided display panel of claim 1, wherein the light emitting unit comprises a red light emitting subunit, a green light emitting subunit, and a blue light emitting subunit;
    所述滤光单元包括与所述红色发光子单元相对设置的红色滤光子单元、与所述绿色发光子单元相对设置的绿色滤光子单元以及与所述蓝色发光子单元相对设置的蓝色滤光子单元。The filter unit includes a red filter subunit disposed opposite to the red light emitting subunit, a green filter subunit disposed opposite to the green light emitting subunit, and a blue filter subunit disposed opposite to the blue light emitting subunit. Photonic unit.
  7. 根据权利要求1所述的OLED双面显示面板，其特征在于，还包括遮光单元，所述遮光单元位于连接所述发光单元与所述控制电路的金属走线的顶部和/或底部，用于遮挡所述金属走线反射的光。The OLED double-sided display panel according to claim 1, further comprising a shading unit, the shading unit is located at the top and/or bottom of the metal trace connecting the light-emitting unit and the control circuit for Block the light reflected by the metal traces.
  8. 根据权利要求7所述的OLED双面显示面板，其特征在于，所述遮光单 元由金属材料或者有机材料制备。The OLED double-sided display panel of claim 7, wherein the shading unit is made of a metal material or an organic material.
  9. 根据权利要求1-8任一项所述的OLED双面显示面板，其特征在于，所述OLED双面显示面板包括若干个像素单位；每一个所述像素单位包括电路控制区、发光区和透明区。The OLED double-sided display panel according to any one of claims 1-8, wherein the OLED double-sided display panel includes a plurality of pixel units; each of the pixel units includes a circuit control area, a light emitting area, and a transparent area. Area.
  10. 根据权利要求9所述的OLED双面显示面板，其特征在于，所述电路控制区、所述发光区及所述透明区沿垂直于出光方向的方向并排设置。The OLED double-sided display panel according to claim 9, wherein the circuit control area, the light-emitting area, and the transparent area are arranged side by side along a direction perpendicular to the light-emitting direction.
  11. 根据权利要求10所述的OLED双面显示面板，其特征在于，所述透明区包括多个叠层，所述透明区内的叠层的折射率差值的绝对值小于0.05。10. The OLED double-sided display panel of claim 10, wherein the transparent area comprises a plurality of stacked layers, and the absolute value of the refractive index difference of the stacked layers in the transparent area is less than 0.05.
  12. 根据权利要求9所述的OLED双面显示面板，其特征在于，所述控制电路设置在所述电路控制区内，所述发光单元和所述滤光单元设置在所述发光区内。The OLED double-sided display panel of claim 9, wherein the control circuit is arranged in the circuit control area, and the light-emitting unit and the filter unit are arranged in the light-emitting area.
  13. 根据权利要求1所述的OLED双面显示面板，其特征在于，所述发光单元与所述OLED双面显示面板的顶面和底面的距离差异小于20％。The OLED double-sided display panel of claim 1, wherein the distance between the light-emitting unit and the top surface and the bottom surface of the OLED double-sided display panel is less than 20%.
  14. 根据权利要求4所述的OLED双面显示面板，其特征在于，所述OLED双面显示面板还包括封装层和平坦层；The OLED double-sided display panel according to claim 4, wherein the OLED double-sided display panel further comprises an encapsulation layer and a flat layer;
    所述封装层设置在其中一个滤光单元与所述发光单元之间；The encapsulation layer is arranged between one of the filter units and the light emitting unit;
    所述平坦层设置在另一个滤光单元与所述发光单元之间。The flat layer is provided between the other filter unit and the light emitting unit.
  15. 根据权利要求14所述的OLED双面显示面板，其特征在于，所述其中一个滤光单元包括：第一滤光层，所述另一个滤光单包括：第二滤光层；The OLED double-sided display panel of claim 14, wherein the one of the filter units comprises: a first filter layer, and the other filter unit includes: a second filter layer;
    所述第一滤光层设置在所述透明基板的发光区，所述平坦层层叠在所述第一滤光层上，用于形成平坦表面；The first filter layer is disposed in the light-emitting area of the transparent substrate, and the flat layer is laminated on the first filter layer to form a flat surface;
    所述发光单元层叠设置在所述平坦层上，所述封装层层叠设置在所述发光单元的顶部；The light-emitting unit is stacked on the flat layer, and the encapsulation layer is stacked on the top of the light-emitting unit;
    所述第二滤光层层叠设置在所述封装层上。The second filter layer is stacked on the encapsulation layer.
  16. 根据权利要求14所述的OLED双面显示面板，其特征在于，所述OLED双面显示面板还包括像素定义层；14. The OLED double-sided display panel of claim 14, wherein the OLED double-sided display panel further comprises a pixel definition layer;
    所述像素定义层设置在所述平坦层形成的平坦表面上，用于形成定位所述发光单元的凹陷。The pixel definition layer is disposed on a flat surface formed by the flat layer, and is used to form a recess for positioning the light-emitting unit.
  17. 根据权利要求14所述的OLED双面显示面板，其特征在于，所述OLED双面显示面板还包括保护层；所述保护层覆盖在所述第二滤光层的表面。15. The OLED double-sided display panel of claim 14, wherein the OLED double-sided display panel further comprises a protective layer; the protective layer covers the surface of the second filter layer.
  18. 根据权利要求16所述的OLED双面显示面板，其特征在于，所述保护 层、所述第二滤光层、所述封装层、所述透明基板、所述平坦层以及所述第一滤光层的厚度满足如下条件：The OLED double-sided display panel of claim 16, wherein the protective layer, the second filter layer, the encapsulation layer, the transparent substrate, the flat layer, and the first filter layer The thickness of the optical layer satisfies the following conditions:
    |a-b|＜0.2*max(a，b)，a为所述保护层、所述第二滤光层以及所述封装层的厚度之和，b为所述透明基板、所述平坦层以及所述第一滤光层的厚度之和，max(a，b)为a和b之间的最大值。|ab|<0.2*max(a, b), a is the sum of the thickness of the protective layer, the second filter layer and the encapsulation layer, and b is the transparent substrate, the flat layer and the For the sum of the thickness of the first filter layer, max(a, b) is the maximum value between a and b.
  19. 根据权利要求14所述的OLED双面显示面板，其特征在于，所述保护层、所述封装层、所述平坦层以及所述透明基板具有相同的折射率。The OLED double-sided display panel according to claim 14, wherein the protective layer, the encapsulation layer, the flat layer and the transparent substrate have the same refractive index.
PCT/CN2019/088843 2019-05-28 2019-05-28 Oled double-sided display panel WO2020237507A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103165826A (en) * 2011-12-19 2013-06-19 联想(北京)有限公司 Two-sided organic light emitting diode, manufacturing method thereof and display device
US20130250208A1 (en) * 2012-03-22 2013-09-26 Wintek Corporation Display panel and method of fabricating the same
CN103985734A (en) * 2014-04-16 2014-08-13 京东方科技集团股份有限公司 Transparent display device and manufacturing method thereof
CN108400155A (en) * 2018-04-23 2018-08-14 京东方科技集团股份有限公司 OLED double face display panels and preparation method thereof
CN109166895A (en) * 2018-08-31 2019-01-08 京东方科技集团股份有限公司 A kind of array substrate and display device
US20190131356A1 (en) * 2016-02-02 2019-05-02 Apple Inc. Quantum dot led and oled integration for high efficiency displays

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7161185B2 (en) * 2003-06-27 2007-01-09 Semiconductor Energy Laboratory Co., Ltd. Display device and electronic device
CN105280686B (en) * 2015-10-23 2018-09-11 京东方科技集团股份有限公司 A kind of display panel and display device
KR102446344B1 (en) * 2017-11-16 2022-09-22 삼성디스플레이 주식회사 Display devices and manufacturing method of wiring

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103165826A (en) * 2011-12-19 2013-06-19 联想(北京)有限公司 Two-sided organic light emitting diode, manufacturing method thereof and display device
US20130250208A1 (en) * 2012-03-22 2013-09-26 Wintek Corporation Display panel and method of fabricating the same
CN103985734A (en) * 2014-04-16 2014-08-13 京东方科技集团股份有限公司 Transparent display device and manufacturing method thereof
US20190131356A1 (en) * 2016-02-02 2019-05-02 Apple Inc. Quantum dot led and oled integration for high efficiency displays
CN108400155A (en) * 2018-04-23 2018-08-14 京东方科技集团股份有限公司 OLED double face display panels and preparation method thereof
CN109166895A (en) * 2018-08-31 2019-01-08 京东方科技集团股份有限公司 A kind of array substrate and display device

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