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WO2021051687A1 - 显示面板、显示装置及显示面板的制备方法 - Google Patents

显示面板、显示装置及显示面板的制备方法 Download PDF

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Publication number
WO2021051687A1
WO2021051687A1 PCT/CN2019/126198 CN2019126198W WO2021051687A1 WO 2021051687 A1 WO2021051687 A1 WO 2021051687A1 CN 2019126198 W CN2019126198 W CN 2019126198W WO 2021051687 A1 WO2021051687 A1 WO 2021051687A1
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WO
WIPO (PCT)
Prior art keywords
black matrix
display panel
display device
light
display
Prior art date
Application number
PCT/CN2019/126198
Other languages
English (en)
French (fr)
Inventor
陈泽升
Original Assignee
武汉华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/637,773 priority Critical patent/US11527741B2/en
Publication of WO2021051687A1 publication Critical patent/WO2021051687A1/zh

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Classifications

    • 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
    • H10K59/877—Arrangements for extracting light from the devices comprising scattering means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/854—Arrangements for extracting light from the devices comprising scattering means
    • 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
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/331—Nanoparticles used in non-emissive layers, e.g. in packaging layer
    • 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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]

Definitions

  • the present invention relates to the field of display technology, in particular to a display panel, a display device and a preparation method of the display panel.
  • OLED Organic Light-Emitting Diode
  • OLED display devices usually use ITO pixel electrodes and metal electrodes as the anode and cathode of the device, respectively. Under a certain voltage drive, electrons and holes are injected from the cathode and anode to the electron transport layer and hole transport layer, respectively. Holes migrate to the light-emitting layer through the electron transport layer and the hole transport layer respectively, and meet in the light-emitting layer to form excitons and excite light-emitting molecules, the latter emit visible light after radiative relaxation.
  • the embodiment of the present invention provides a display panel, a display device and a manufacturing method of the display panel, which avoids the influence of the black matrix shading layer on the transmittance and reflectivity of light, and eliminates the disadvantages of the technology of replacing the polarizer with the color film.
  • the viewing angle of the OLED deteriorates, which makes the OLED display poor and provides a solution.
  • the present application provides a display panel, the display panel comprising: a display device board; an encapsulation layer provided on the display device board; a color film substrate provided on the encapsulation layer
  • the color filter substrate includes a light-shielding area, the light-shielding area is formed with a black matrix, and at least one black matrix unit in the black matrix has a sidewall with an inclination angle.
  • the sidewalls of all black matrix units in the black matrix are provided with inclination angles.
  • inclined grooves are formed between adjacent black matrix units in the black matrix.
  • the groove is filled with scattering particles.
  • the structure of the scattering particles is in various shapes, and the various shapes include a sphere and a regular polyhedron.
  • the scattering particles are in a transparent state.
  • the angle of the inclination angle is (0 ° , 90°).
  • the present application provides a display device, the display device includes a display panel, and the display panel includes:
  • An encapsulation layer provided on the display device board
  • a color filter substrate arranged on the encapsulation layer including a light shielding area, the light shielding area is formed with a black matrix, and at least one black matrix unit in the black matrix has a side wall with an inclination angle.
  • the sidewalls of all black matrix units in the black matrix are provided with inclination angles.
  • inclined grooves are formed between adjacent black matrix units in the black matrix.
  • the groove is filled with scattering particles.
  • the structure of the scattering particles is in various shapes, and the various shapes include a sphere and a regular polyhedron.
  • the scattering particles are in a transparent state.
  • the angle of the inclination angle is (0 ° , 90°).
  • the present application provides a method for manufacturing a display panel.
  • the method includes: providing a display device board; preparing an encapsulation layer on the display device board; preparing a black matrix on the encapsulation layer; The sidewalls of at least one black matrix unit in the matrix are processed to prepare a black matrix unit with an inclination of the sidewalls.
  • the method further includes: processing the sidewalls of all the black matrix units in the black matrix to prepare a black matrix unit with an inclination of the sidewalls.
  • a display panel in the embodiment of the present invention, includes: a display device board; an encapsulation layer provided on the display device board; a color film substrate provided on the encapsulation layer, the color film
  • the substrate includes a light-shielding area, and a black matrix is formed in the light-shielding area, and at least one black matrix unit in the black matrix has a sidewall with an inclination angle.
  • FIG. 1 is a schematic structural diagram of an embodiment of a display panel provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an embodiment of the influence of the thickness of the black matrix on the viewing angle according to the embodiment of the present invention
  • FIG. 3 is a schematic diagram of an embodiment in which the sidewall of the black matrix unit is provided with an inclination angle according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an embodiment in which a groove is filled with scattering particles according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of an embodiment of the influence of the thickness of the black matrix on the transmittance of the black matrix openings of the same size according to the embodiment of the present invention
  • FIG. 6 is a schematic diagram of an embodiment of the influence of the angle of the side wall of the black matrix opening on the transmittance according to the embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an embodiment of a method for manufacturing a display panel provided by an embodiment of the present invention.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the aforementioned features. In the description of the present invention, “” means two or more than two, unless otherwise specifically defined.
  • an embodiment of the present invention provides a display panel, a display device, and a method for manufacturing the display panel, which will be described in detail below.
  • an embodiment of the present invention provides a display panel.
  • the display panel includes: a display device board; an encapsulation layer arranged on the display device board; a color film substrate arranged on the encapsulation layer, and the color film substrate is arranged on the encapsulation layer.
  • the film substrate includes a light-shielding area, and a black matrix is formed in the light-shielding area, and at least one black matrix unit in the black matrix has a sidewall with an inclination angle.
  • FIG. 1 it is a schematic structural diagram of an embodiment of a display panel in an embodiment of the present invention, wherein the display panel includes the following structure:
  • the display device board is a semi-finished product of the display panel.
  • the display device board 101 includes an array substrate 111 and a light emitting device 112.
  • the light emitting device 112 includes an anode, a hole transport layer, a light emitting layer, an electron transport layer, and a cathode. .
  • the encapsulation of OLED mainly refers to isolating the OLED from the environment to prevent damage from H 2 O, O 2 , dust and external forces, stabilize various parameters of the device, and thereby increase the service life of the OLED.
  • Active metal cathode and an organic light emitting device OLED materials H 2 O, O 2 is very sensitive to trace amounts of H 2 O, O 2 attack will seriously affect the display and lifetime of the device.
  • the isolation of H 2 O and O 2 through device packaging is one of the key issues for realizing the development of OLED industrialization.
  • a color filter substrate 130 disposed on the encapsulation layer includes a light-shielding area and a light-transmitting area 132, the light-shielding area is formed with a black matrix 131, and at least one black matrix unit in the black matrix The sidewalls are provided with an inclination angle.
  • the side wall of the black matrix unit is provided with an inclination angle, and the angle of the inclination angle is the angle between the side wall of the black matrix and the vertical direction.
  • the thickness of the module is greatly reduced.
  • FIG. 2 a schematic diagram of an embodiment of the influence of the thickness of the black matrix on the transmittance of the black matrix openings of the same size is provided for the embodiment of the present invention.
  • the thickness of the black matrix affects the viewing angle. Within the range shown in FIG. 2, the smaller the thickness of the black matrix, the larger the viewing angle.
  • the color filter substrate includes a glass substrate, a black matrix, and three primary color resists of red/green/blue, and the three primary color resists of red/green/blue are arranged corresponding to the sub-pixels of the pixels of the light-emitting device, namely
  • the red color resistors are set corresponding to the red sub-pixels
  • the black matrix is set between adjacent color resistors to block messy scattered light, prevent color mixing between sub-pixels, and prevent part of the spectrum of natural light from only passing through it.
  • the matched monochromatic spectrum forms the primary color in the mixed color.
  • FIG. 3 it is a schematic diagram of an embodiment in which the side wall of the black matrix unit is provided with an inclination angle according to an embodiment of the present invention.
  • the black matrix 301 when the light emitted by the light-emitting device passes through the black matrix 301, part of the original oblique light will not be blocked by the black matrix, thus making it easier for the light to exit between the black matrices, and increasing the light exit angle, thereby increasing The transmittance and viewing angle of the OLED are increased, so the display effect of the OLED is effectively improved.
  • a display panel in the embodiment of the present invention, includes: a display device board; an encapsulation layer provided on the display device board; a color film substrate provided on the encapsulation layer, the color film
  • the substrate includes a light-shielding area, and a black matrix is formed in the light-shielding area, and at least one black matrix unit in the black matrix has a sidewall with an inclination angle.
  • the sidewalls of all black matrix units in the black matrix are provided with inclination angles.
  • the viewing angle of a liquid crystal display includes two indicators: the horizontal viewing angle and the vertical viewing angle.
  • the horizontal viewing angle is expressed by the vertical normal of the display (that is, the vertical imaginary line in the middle of the display).
  • the displayed image can still be seen normally at a certain angle to the left or right of the normal.
  • This angle range is the horizontal viewing angle of the LCD; also if the horizontal normal is the standard, the vertical viewing angle is called Vertical viewing angle.
  • the viewing angle is based on the contrast change as a reference standard. When the viewing angle is increased, the contrast of the displayed image seen at that position will decrease, and when the angle is increased to a certain extent, and the contrast decreases to 10:1, this angle is the maximum viewing angle of the liquid crystal display.
  • the two indicators, the horizontal viewing angle and the vertical viewing angle can be greatly increased, and therefore the viewing angle of the OLED can be effectively increased.
  • inclined grooves are formed between adjacent black matrix units in the black matrix.
  • the groove is filled with scattering particles.
  • the embodiment of the present invention provides a schematic diagram of an embodiment in which a groove is filled with scattering particles.
  • the recess 403 is filled with scattering particles 402
  • the scattering particles will scatter the light, which can increase
  • the horizontal viewing angle and the vertical viewing angle are two indicators, so the viewing angle of the OLED can be increased more effectively.
  • the structure of the scattering particles is in various shapes, and the various shapes include a sphere and a regular polyhedron.
  • the present application does not limit the structure of the scattering particles, and it depends on the actual situation.
  • the scattering particles are in a transparent state.
  • the present invention needs to scatter the ambient light to increase the viewing angle of the display panel without affecting the light transmittance of the display panel. Therefore, it is necessary to select scattering particles that have high transmittance to visible light and are in a colorless and transparent state.
  • the scattering particles may be SiO 2 or TiO, but this application does not limit the type of the scattering particles, which depends on the actual situation.
  • the angle of the inclination is (0 ° , 90°), for example, the inclination angle is 30°.
  • the black matrix One black matrix unit can set the inclination angle, or multiple black matrix units can set the inclination angle.
  • the inclination angle set for each black matrix can be the same or different
  • the black matrix includes a black matrix unit 1 and a black matrix unit 2, the black matrix unit 1 is provided with an inclination angle 1, and the black matrix unit 2 is provided with an inclination angle 2, and the inclination angle 1 and the inclination angle 2 can both be set to 30°, It is also possible that the inclination angle 1 is set to 30°, and the inclination angle 2 is set to 45°.
  • the inclination angle settings of the multiple black matrix units in the black matrix may be specifically determined according to actual conditions, and there is no limitation here.
  • an embodiment of the present invention provides a schematic diagram of the influence of the thickness of the black matrix on the transmittance of the black matrix holes of the same size. According to the data in FIG. 4, it can be seen that when the size of the black matrix is the same, The thickness of the black matrix is inversely proportional to the open transmittance of the black matrix.
  • FIG. 6 it is a schematic diagram of an embodiment of the influence of the taper angle of the side wall of the black matrix opening on the transmittance according to the embodiment of the present invention.
  • an opening is formed on the sidewalls of the two adjacent black matrix units. It can be seen from FIG. 6 that the taper angle of the sidewalls of the black matrix unit ranges from 10° to 90°.
  • the taper angle of the sidewall of the matrix opening increases and decreases, that is, the larger the taper angle of the sidewall of the opening of the black matrix unit, the lower the transmittance of the black matrix unit.
  • the angle of the inclination angle is [10 ° , 20°].
  • the inclination angle is within this range, the effect will be more excellent.
  • the The inclination angle is 20°.
  • the longitudinal section of the groove is trapezoidal.
  • the embodiment of the present invention also provides a display device, and the display device includes the display panel as described in the foregoing embodiment.
  • the sidewall of the black matrix unit is provided with an inclination angle, so that light is more easily emitted from between the black matrixes, and the light emission angle is increased, thereby increasing the transmission of the OLED Therefore, the display effect of the OLED is effectively improved, and the display effect of the display device is further improved.
  • the embodiment of the present invention also provides a manufacturing method of the display panel, the method includes: providing a display device panel;
  • An encapsulation layer is prepared on the display device board; a black matrix is prepared on the encapsulation layer; the sidewall of at least one black matrix unit in the black matrix is processed to prepare a black matrix unit with an inclination of the sidewall.
  • FIG. 7 it is a schematic flowchart of an embodiment of a method for manufacturing a display panel according to an embodiment of the present invention.
  • the method for manufacturing the display panel includes:
  • the display device board is a semi-finished product of a display panel
  • the display device board includes an array substrate and a light-emitting device
  • the light-emitting device is prepared on the array substrate
  • the light-emitting device includes an anode and a hole transport layer.
  • Luminescent layer Luminescent layer, electron transport layer and cathode.
  • the encapsulation layer may be a cover plate encapsulation or a film encapsulation, and this application does not limit the encapsulation method, which depends on the actual situation.
  • the cover plate package is generally used for OLEDs based on rigid substrates such as glass substrates.
  • the substrate of the prepared OLED device is transferred from the loading chamber of the OLED system into the glove box.
  • the inert gas environment in the glove box requires water and oxygen content below 1 ppm; then, the cover plate is transferred from the loading chamber to the plasma treatment
  • the cavity is subjected to PT treatment to activate the surface of the cover plate, so that the epoxy resin ultraviolet curing glue has good wettability on its surface and is closely linked. Pass the PT-treated cover into the glove box, and first paste the desiccant sheet to absorb the packaging.
  • the water generated during the operation of the OLED device may remain in the sealed space, and then adjust the program and the width of the ultraviolet light curing adhesive
  • the free glue applicator completes the coating of epoxy resin UV curing glue.
  • the organic functional layer and the electrode sandwiched between the cover plate and the substrate are sealed, thereby isolating the water, oxygen, and ash layer in the outside atmosphere, and preventing the various functional layers of the OLED from reacting with the water and oxygen in the air.
  • the color filter substrate includes a light-transmitting area and a light-shielding area
  • the color filter substrate includes a glass substrate, a black matrix, red/green/blue three primary color resists, and the red/green/blue three primary color resists are compatible with
  • the sub-pixels of the pixels of the light-emitting device are arranged correspondingly, that is, the light-transmitting area.
  • the red color resist is arranged corresponding to the red sub-pixel
  • the black matrix is arranged between adjacent color resists to shield the messy scattered light. That is, the shading area is used to prevent color mixing between sub-pixels and prevent a part of the spectrum in natural light, and only transmits the matching monochromatic spectrum to form the primary color in the color mixing.
  • a black matrix layer is coated on the encapsulation layer, and a black matrix pattern is formed through exposure and development.
  • the sidewalls of at least one black matrix unit in the black matrix are processed to prepare a black matrix unit with an inclination of the sidewalls, wherein the black matrix is the black patterned after the above-mentioned step 203 is patterned. matrix.
  • a method for manufacturing the display panel is provided.
  • the sidewall of the black matrix unit is provided with an inclination angle, thereby making it easier for light to be emitted from between the black matrices and increasing the light emission.
  • Angle thereby increasing the transmittance and viewing angle of the OLED, thus effectively improving the display effect of the OLED.
  • the method further includes:
  • the sidewalls of all the black matrix units in the black matrix are processed to prepare a black matrix unit with an inclination of the sidewalls.
  • the color ink substrate includes a black matrix, and inclined grooves are formed between adjacent black matrix units in the black matrix, so The method further includes: filling the groove with scattering particles.
  • each of the above units or structures can be implemented as independent entities, or can be combined arbitrarily, and implemented as the same or several entities.
  • specific implementation of each of the above units or structures please refer to the previous method embodiments. No longer.
  • a display panel, a display device, and a manufacturing method of the display panel provided by the embodiments of the present invention are described in detail above. Specific examples are used in this article to illustrate the principles and implementations of the present invention. The description of the above embodiments is only It is used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and the scope of application. In summary, this specification The content should not be construed as limiting the present invention.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种显示面板、显示装置及显示面板的制备方法，通过在黑色矩阵（131）单元侧壁开设有倾角，因此使得光线更容易从黑色矩阵（131）之间射出，且增大了光线射出角度，从而增大了OLED的透过率和可视角度，因此有效的提高了OLED的显示效果。

Description

显示面板、显示装置及显示面板的制备方法
本申请要求于2019年09月19日提交中国专利局、申请号为201910888781.5、发明名称为“显示面板、显示装置及显示面板的制备方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及显示技术领域，具体涉及一种显示面板、显示装置及显示面板的制备方法。
 背景技术
目前，有机发光二极管(Organic Light-Emitting Diode， OLED)，具有十分优异的显示性能，以及自发光、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。
OLED发光原理为有机半导体材料和发光材料在电场驱动下，通过载流子注入和复合导致发光的现象。具体的，OLED显示器件通常采用ITO像素电极和金属电极分别作为器件的阳极和阴极，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传输层和空穴传输层，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。
 技术问题
柔性显示技术随着OLED技术的日益成熟，柔性显示技术的一个关键发展方向为膜层减薄技术的开发。其中，采用彩膜取代偏光片的技术，一方面极大地提升了OLED的透过率，另一方面将面板的模组厚度极大地减薄，在尖端柔性显示领域受到了广泛的关注。由于采用黑色的吸光层来控制显示面板表面的反射率和OLED发光层透过率，但是黑色矩阵吸光层对光线的透过率和反射率都有影响，因此导致OLED的可视角度变差，使得OLED显示效果不良。
 技术解决方案
本发明实施例提供一种显示面板、显示装置及显示面板的制备方法，避免了黑色矩阵遮光层对光线的透过率和反射率造成的影响，消除了彩膜取代偏光片技术的劣势，为OLED的可视角度变差，使得OLED显示效果不良提供了解决方案。
为解决上述问题，第一方面，本申请提供一种显示面板，所述显示面板包括：显示器件板；设置在所述显示器件板上的封装层；设置在所述封装层上的彩膜基板，所述彩膜基板包括遮光区，所述遮光区形成有黑色矩阵，所述黑色矩阵中至少一个黑色矩阵单元侧壁开设有倾角。
进一步的，所述黑色矩阵中所有的黑色矩阵单元的侧壁均开设有倾角。
进一步的，所述黑色矩阵中的相邻黑色矩阵单元之间形成有倾斜的凹槽。
进一步的，所述凹槽中填充有散射粒子。
进一步的，所述散射粒子的结构呈多种形状，所述多种形状中包括球体和规则多面体。
进一步的，所述散射粒子为透明状态。
进一步的，所述倾角的角度为（0 °，90°）。
第二方面，本申请提供一种显示装置，所述显示装置包括显示面板，所述显示面板包括：
显示器件板；
设置在所述显示器件板上的封装层；
设置在所述封装层上的彩膜基板，所述彩膜基板包括遮光区，所述遮光区形成有黑色矩阵，所述黑色矩阵中至少一个黑色矩阵单元侧壁开设有倾角。
进一步的，所述黑色矩阵中所有的黑色矩阵单元的侧壁均开设有倾角。
进一步的，所述黑色矩阵中的相邻黑色矩阵单元之间形成有倾斜的凹槽。
进一步的，所述凹槽中填充有散射粒子。
进一步的，所述散射粒子的结构呈多种形状，所述多种形状中包括球体和规则多面体。
进一步的，所述散射粒子为透明状态。
进一步的，所述倾角的角度为（0 °，90°）。
第三方面，本申请提供一种显示面板的制备方法，所述方法包括：提供显示器件板；在所述显示器件板上制备封装层；在所述封装层上制备黑色矩阵；对所述黑色矩阵中至少一个黑色矩阵单元的侧壁进行处理，制备得到侧壁具有倾角的黑色矩阵单元。
进一步的，所述方法还包括：对所述黑色矩阵中所有的黑色矩阵单元的侧壁进行处理，制备得到侧壁具有倾角的黑色矩阵单元。
 有益效果
本发明实施例中通过提供一种显示面板，所述显示面板包括：显示器件板；设置在所述显示器件板上的封装层；设置在所述封装层上的彩膜基板，所述彩膜基板包括遮光区，所述遮光区形成有黑色矩阵，所述黑色矩阵中至少一个黑色矩阵单元侧壁开设有倾角。通过在黑色矩阵单元侧壁开设有倾角，因此使得光线更容易从黑色矩阵之间射出，且增大了光线射出角度，从而增大了OLED的透过率和可视角度，因此有效的提高了OLED的显示效果。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供一种显示面板的一个实施例结构示意图；
图2是本发明实施例提供一种黑色矩阵厚度对可视角度影响的一个实施例示意图；
图3是本发明实施例提供一种黑色矩阵单元侧壁开设有倾角的一个实施例示意图；
图4是本发明实施例提供一种凹槽中填充有散射粒子的一个实施例示意图；
图5本发明实施例提供一种黑色矩阵厚度对相同尺寸黑色矩阵开孔透过率影响的一个实施例示意图；
图6是本发明实施例提供一种黑色矩阵开口侧壁角度对透过率影响的一个实施例示意图；
图7是本发明实施例提供一种显示面板制备方法的一个实施例示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更所述特征。在本发明的描述中，“”的含义是两个或两个以上，除非另有明确具体的限定。
柔性显示技术随着OLED技术的日益成熟，柔性显示技术的一个关键发展方向为膜层减薄技术的开发。其中，采用彩膜取代偏光片的技术，一方面极大地提升了OLED的透过率，另一方面将面板的模组厚度极大地减薄，在尖端柔性显示领域受到了广泛的关注。由于采用黑色的吸光层来控制显示面板表面的反射率和OLED发光层透过率，但是黑色矩阵吸光层对光线的透过率和反射率都有影响，因此导致OLED的可视角度变差，使得OLED显示效果不良。
基于此，本发明实施例提供一种显示面板、显示装置及显示面板的制备方法，以下分别进行详细说明。
首先，本发明实施例中提供一种显示面板，所述显示面板包括：显示器件板；设置在所述显示器件板上的封装层；设置在所述封装层上的彩膜基板，所述彩膜基板包括遮光区，所述遮光区形成有黑色矩阵，所述黑色矩阵中至少一个黑色矩阵单元侧壁开设有倾角。
如图1所示，为本发明实施例中显示面板的一个实施例结构示意图，其中，所述显示面板包括如下结构：
（1）显示器件板110。
其中，所述显示器件板为显示面板的半成品，所述显示器件板101包括阵列基板111和发光器件112，所述发光器件112又包括阳极、空穴传输层、发光层、电子传输层及阴极。
（2）设置在所述显示器件板上的封装层120。
一般而言，OLED的封装主要是指将OLED与环境隔离，以防止H 2O、O 2、灰尘及外力的损害，稳定器件的各项参数，进而提高OLED的使用寿命。OLED器件的活泼金属阴极和有机发光材料对H 2O、O 2非常敏感，微量的H 2O、O 2的侵蚀将严重影响器件的显示效果和寿命。而通过器件封装隔绝H 2O、 O 2，是实现OLED产业化发展的关键问题之一。
（3）设置在所述封装层上的彩膜基板130，所述彩膜基板包括遮光区和透光区132，所述遮光区形成有黑色矩阵131，所述黑色矩阵中至少一个黑色矩阵单元的侧壁开设有倾角。
其中，所述黑色矩阵单元的侧壁开设有倾角，其倾角的角度为黑色矩阵侧壁与竖直方向上的夹角，本申请是基于采用了彩膜取代偏光片的技术，有效的将面板的模组厚度极大地减薄，如图2所示，为本发明实施例提供一种黑色矩阵厚度对相同尺寸黑色矩阵开孔透过率影响的一个实施例示意图，其中，由图2可知，黑色矩阵厚度对可视角度影响，在如图2所示范围内，所述黑色矩阵的厚度越小，则所述可视角度越大。
具体的，所述彩膜基板包括玻璃衬底、黑色矩阵、红/绿/蓝三基色色阻，所述红/绿/蓝三基色色阻与发光器件的像素的子像素相对应设置，即红色色阻与红色子像素相对应设置，所述黑色矩阵设置于相邻色阻之间，用于遮挡杂乱散射光，防止子像素之间混色和防止自然光中的一部分光谱，仅透过与之匹配的单色光谱，形成混色中的基色。
如图3所示，为本发明实施例提供一种黑色矩阵单元侧壁开设有倾角的一个实施例示意图。
其中，当所述发光器件发出的光线通过黑色矩阵301时，原有部分倾斜光线将不被黑色矩阵阻挡，因此使得光线更容易从黑色矩阵之间射出，且增大了光线射出角度，从而增大了OLED的透过率和可视角度，因此有效的提高了OLED的显示效果。
本发明实施例中通过提供一种显示面板，所述显示面板包括：显示器件板；设置在所述显示器件板上的封装层；设置在所述封装层上的彩膜基板，所述彩膜基板包括遮光区，所述遮光区形成有黑色矩阵，所述黑色矩阵中至少一个黑色矩阵单元侧壁开设有倾角。通过在黑色矩阵单元侧壁开设有倾角，因此使得光线更容易从黑色矩阵之间射出，且增大了光线射出角度，从而增大了OLED的透过率和可视角度，因此有效的提高了OLED的显示效果。
在上述实施例的基础上，在本申请的另一个具体实施例中，所述黑色矩阵中所有的黑色矩阵单元的侧壁均开设有倾角。
一般说来，液晶显示器的可视角度包括水平可视角度和垂直可视角度两个指标，水平可视角度表示以显示器的垂直法线（即显示器正中间的垂直假想线）为准，在垂直于法线左方或右方一定角度的位置上仍然能够正常的看见显示图像，这个角度范围就是液晶显示器的水平可视角度；同样如果以水平法线为准，上下的可视角度就称为垂直可视角度。可视角度是以对比度变化为参照标准的。当观察角度加大时，该位置看到的显示图像的对比度会下降，而当角度加大到一定程度，对比度下降到10∶1时，这个角度就是该液晶显示器的最大可视角。本申请通过将所述黑色矩阵中所有的黑色矩阵单元的侧壁均开设有倾角，可以大大增加水平可视角度和垂直可视角度两个指标，因此可以有效增大OLED的可视角度。
在上述实施例的基础上，在本申请的另一个具体实施例中，所述黑色矩阵中的相邻黑色矩阵单元之间形成有倾斜的凹槽。
在本发明实施例中，由于在彩膜基板中，黑色矩阵的高度比红/绿/蓝三基色色阻的高度要高，因此在黑色矩阵之间形成有倾斜的凹槽。
在上述实施例的基础上，在本申请的另一个具体实施例中，所述凹槽中填充有散射粒子。
如图4所示，本发明实施例提供一种凹槽中填充有散射粒子的一个实施例示意图。
在本发明实施例中，由于在所述凹槽403中填充了散射粒子402，当所述发光器件发射的光透过所述散射粒子后，所述散射粒子会将光线进行散射，因此可以增加水平可视角度和垂直可视角度两个指标，因此可以更有效增大OLED的可视角度。
在上述实施例的基础上，在本申请的一个具体实施例中，所述散射粒子的结构呈多种形状，所述多种形状中包括球体和规则多面体。本申请对所述散射粒子结构并不做限定，具体视实际情况而定。
在上述实施例的基础上，在本申请的一个具体实施例中，所述散射粒子为透明状态。
具体的，本发明需要将环境光进行散射，提高了显示面板的可视角度，同时不能影响显示面板的透光率，因此需要选择对可见光高透过率，且无色透明状态的散射粒子，例如，所述散射粒子可以为SiO 2或TiO，但本申请并不对所述散射粒子的种类作限定，具体视实际情况而定。
在上述实施例的基础上，在本申请的一个具体实施例中，所述倾角的角度为（0 °，90°），例如，所述倾角为30°，本申请实施例中，黑色矩阵中的可以一个黑色矩阵单元设置倾角，也可以是多个黑色矩阵单元设置倾角，当黑色矩阵中的多个黑色矩阵单元设置倾角时，每个黑色矩阵设置的倾角可以是一样的，也可以是不同的，例如，黑色矩阵中包括黑色矩阵单元1和黑色矩阵单元2，黑色矩阵单元1中设置有倾角1，黑色矩阵单元2中设置有倾角2，倾角1、倾角2可以均设置为30°，也可以是倾角1设置为30°，倾角2设置为45°，黑色矩阵中多个黑色矩阵单元的倾角设置具体可以视实际情况而定，此处不作限制。
如图5所示，为本发明实施例提供一种黑色矩阵厚度对相同尺寸黑色矩阵开孔透过率影响的一个实施例示意图，其中，由图4数据可知，当黑色矩阵尺寸相同时，所述黑色矩阵的厚度与所述黑色矩阵开孔透过率成反比。
如图6所示，为本发明实施例提供一种黑色矩阵开口侧壁taper角度对透过率影响的一个实施例示意图。
其中，所述相邻两个黑色矩阵单元的侧壁形成有一个开口，由图6可知，黑色矩阵单元侧壁taper角度从10°到90°，所述黑色矩阵开口透过率，随着黑色矩阵开口侧壁taper角度的增大而减小，即黑色矩阵单元开口侧壁taper角度越大，黑色矩阵单元开孔透过率越小。
在上述实施例的基础上，在本申请的一个具体实施例中，所述倾角的角度为[10 °，20°]，当所述倾角在该范围内，其效果会更加优良，例如所述倾角为20°。
在上述实施例的基础上，在本申请的一个具体实施例中，所述凹槽的纵截面呈梯形。
为了更好实施本发明实施例中的显示面板，在显示面板的基础之上，本发明实施例中还提供一种显示装置，所述显示装置包括如上述实施例所述的显示面板。
通过采用如上实施例中描述的显示面板，通过在黑色矩阵单元侧壁开设有倾角，因此使得光线更容易从黑色矩阵之间射出，且增大了光线射出角度，从而增大了OLED的透过率和可视角度，因此有效的提高了OLED的显示效果，进一步提升了该显示装置的显示效果。
为了更好实施本发明实施例中的显示面板，在显示面板的基础之上，本发明实施例中还提供一种显示面板的制备方法，所述方法包括：提供显示器件板；
在所述显示器件板上制备封装层；在所述封装层上制备黑色矩阵；对所述黑色矩阵中至少一个黑色矩阵单元的侧壁进行处理，制备得到侧壁具有倾角的黑色矩阵单元。
如图7所示，为本发明实施例提供一种显示面板的制备方法的一个实施例流程示意图，所述显示面板的制备方法包括：
701、提供显示器件板。
具体的，所述显示器件板为显示面板的半成品，所述显示器件板包括阵列基板和发光器件，所述发光器件制备在所述阵列基板上，所述发光器件又包括阳极、空穴传输层、发光层、电子传输层及阴极。
702、在所述显示器件板上制备封装层。
其中，所述封装层可以为盖板封装或薄膜封装，本申请对所述封装方式不作限定，具体视实际情况而定。
具体的，所述盖板封装通常用于基于玻璃基板等刚性衬底的OLED。将制备好的OLED器件的基板由OLED系统的装载室传入手套箱内，手套箱内的惰性气体环境要求水、氧气含量低于1ppm以下；随后，将盖板从装载室传送到等离子体处理腔对其进行PT处理，从而使盖板的表面活化，以易于环氧树脂紫外固化胶在其表面有很好的浸润性，和其链接紧密。将PT处理后的盖板传入手套箱内，先贴好干燥剂片用于吸收封装，完成后密封空间内可能残留OLED器件工作时产生的水，再由调节好程序和紫外线光固化胶宽度的自由涂胶机完成对环氧树脂紫外固化胶的涂覆。将基板和盖板均放进真空室，在真空环境下让它们黏结在一起，最后放进紫外曝光机里，在约60℃的条件下进行曝光和热固化处理。这样就将夹在盖板、基板间的有机功能层和电极密封，从而隔绝外界大气中的水、氧气和灰层，防止OLED的各个功能层于空气中的水、氧气发生反应。
703、在所述封装层上制备黑色矩阵。
其中，所述彩膜基板包括透光区和遮光区，所述彩膜基板包括玻璃衬底、黑色矩阵、红/绿/蓝三基色色阻，所述红/绿/蓝三基色色阻与发光器件的像素的子像素相对应设置，即为透光区，例如，红色色阻与红色子像素相对应设置，所述黑色矩阵设置于相邻色阻之间，用于遮挡杂乱散射光，即为所述遮光区，以防止子像素之间混色和防止自然光中的一部分光谱，仅透过与之匹配的单色光谱，形成混色中的基色。
具体的，通过在所述封装层上涂布黑色矩阵层，经过曝光和显影形成黑色矩阵图案。
704、对所述黑色矩阵中至少一个黑色矩阵单元的侧壁进行处理，制备得到侧壁具有倾角的黑色矩阵单元。
具体的，所述对所述黑色矩阵中至少一个黑色矩阵单元的侧壁进行处理，制备得到侧壁具有倾角的黑色矩阵单元，其中，所述黑色矩阵是经过上述203步骤图案化处理后的黑色矩阵。
本发明实施例中通过提供了显示面板的制备方法，相比传统的制备工艺，通过在黑色矩阵单元侧壁开设有倾角，因此使得光线更容易从黑色矩阵之间射出，且增大了光线射出角度，从而增大了OLED的透过率和可视角度，因此有效的提高了OLED的显示效果。
在上述实施例的基础上，在本申请的另一个具体实施例中，所述方法还包括：
对所述黑色矩阵中所有的黑色矩阵单元的侧壁进行处理，制备得到侧壁具有倾角的黑色矩阵单元。
在上述实施例的基础上，在本申请的一个具体实施例中，所述彩墨基板包括有黑色矩阵，在所述黑色矩阵中的相邻黑色矩阵单元之间形成有倾斜的凹槽，所述方法还包括：在所述凹槽中填充散射粒子。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见上文其他实施例中的详细描述，此处不再赘述。
具体实施时，以上各个单元或结构可以作为独立的实体来实现，也可以进行任意组合，作为同一或若干个实体来实现，以上各个单元或结构的具体实施可参见前面的方法实施例，在此不再赘述。
以上各个操作的具体实施可参见前面的实施例，在此不再赘述。
以上对本发明实施例所提供的一种显示面板、显示装置及显示面板的制备方法进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (15)

  1. 一种显示面板，其中，所述显示面板包括：
    显示器件板；
    设置在所述显示器件板上的封装层；
    设置在所述封装层上的彩膜基板，所述彩膜基板包括遮光区，所述遮光区形成有黑色矩阵，所述黑色矩阵中至少一个黑色矩阵单元侧壁开设有倾角。
  2. 根据权利要求1所述的显示面板，其中，所述黑色矩阵中所有的黑色矩阵单元的侧壁均开设有倾角。
  3. 根据权利要求1所述的显示面板，其中，所述黑色矩阵中的相邻黑色矩阵单元之间形成有倾斜的凹槽。
  4. 根据权利要求1所述的显示面板，其中，所述凹槽中填充有散射粒子。
  5. 根据权利要求4所述的显示面板，其中，所述散射粒子的结构呈多种形状，所述多种形状中包括球体和规则多面体。
  6. 根据权利要求5所述的显示面板，其中，所述散射粒子为透明状态。
  7. 根据权利要求1所述的显示面板，其中，所述倾角的角度为（0 °，90°）。
  8. 一种显示装置，其中，所述显示装置包括显示面板，所述显示面板包括：
    显示器件板；
    设置在所述显示器件板上的封装层；
    设置在所述封装层上的彩膜基板，所述彩膜基板包括遮光区，所述遮光区形成有黑色矩阵，所述黑色矩阵中至少一个黑色矩阵单元侧壁开设有倾角。
    9，根据权利要求8所述的显示装置，其中，所述黑色矩阵中所有的黑色矩阵单元的侧壁均开设有倾角。
  9. 根据权利要求8所述的显示装置，其中，所述黑色矩阵中的相邻黑色矩阵单元之间形成有倾斜的凹槽。
  10. 根据权利要求8所述的显示装置，其中，所述凹槽中填充有散射粒子。
  11. 根据权利要求11所述的显示装置，其中，所述散射粒子的结构呈多种形状，所述多种形状中包括球体和规则多面体。
  12. 根据权利要求12所述的显示装置，其中，所述散射粒子为透明状态。
  13. 根据权利要求8所述的显示装置，其中，所述倾角的角度为（0 °，90°）。
  14. 一种显示面板的制备方法，其中，所述方法包括：
    提供显示器件板；
    在所述显示器件板上制备封装层；
    在所述封装层上制备黑色矩阵；
    对所述黑色矩阵中至少一个黑色矩阵单元的侧壁进行处理，制备得到侧壁具有倾角的黑色矩阵单元。
  15. 根据权利要求15所述的显示面板的制备方法，其中，所述方法还包括：
    对所述黑色矩阵中所有的黑色矩阵单元的侧壁进行处理，制备得到侧壁具有倾角的黑色矩阵单元。
PCT/CN2019/126198 2019-09-19 2019-12-18 显示面板、显示装置及显示面板的制备方法 WO2021051687A1 (zh)

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