WO2024082507A1 - Display panel and manufacturing method therefor, and display terminal - Google Patents

Display panel and manufacturing method therefor, and display terminal Download PDF

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Publication number
WO2024082507A1
WO2024082507A1 PCT/CN2023/078185 CN2023078185W WO2024082507A1 WO 2024082507 A1 WO2024082507 A1 WO 2024082507A1 CN 2023078185 W CN2023078185 W CN 2023078185W WO 2024082507 A1 WO2024082507 A1 WO 2024082507A1
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WO
WIPO (PCT)
Prior art keywords
layer
light
emitting device
display panel
liquid crystal
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Application number
PCT/CN2023/078185
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French (fr)
Chinese (zh)
Inventor
宋秀萍
廖作敏
陈俊
段艳强
Original Assignee
武汉华星光电半导体显示技术有限公司
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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
Publication of WO2024082507A1 publication Critical patent/WO2024082507A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • 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

Definitions

  • the present application relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a display terminal.
  • display devices In the display field, various display devices have increasingly higher requirements for optics. For example, in terms of dark display, the darker the screen, the better, which necessarily requires the reflectivity to be as low as possible. At present, display devices usually attach a polarizer with a compensation layer to the light-emitting surface of the display panel to improve the dark display effect.
  • Polaroids on the market are generally not customized, and polaroids with fixed parameters may not be able to achieve a high degree of matching with certain display panels, resulting in poor dark display effects of the display device.
  • the present application provides a display panel and a manufacturing method thereof, and a display terminal, so as to improve the technical problem of poor dark state display effect caused by poor matching between the display panel and the polarizer in current display devices.
  • the present application provides a display panel, comprising:
  • a light emitting device layer is disposed on the substrate
  • polarizing filter layer disposed on the light-emitting side of the light-emitting device layer, wherein the polarizing filter layer comprises a liquid crystal coating
  • the functional layer is arranged on a side of the polarizing filter layer close to the substrate, and a surface of the polarizing filter layer close to the substrate is in direct contact with the functional layer, and the functional layer is an encapsulation layer or a touch layer.
  • the present application also proposes a method for manufacturing a display panel, which is used to manufacture the above-mentioned display panel.
  • the method for manufacturing the display panel includes:
  • a polarizing filter layer is formed on the light-emitting side of the light-emitting device layer, wherein the polarizing filter layer comprises a liquid crystal coating formed by a coating/spraying/deposition process, and a side of the polarizing filter layer close to the substrate is in direct contact with the functional layer.
  • the step of forming a polarizing filter layer on the light-emitting side of the light-emitting device layer includes:
  • a polarizing material is coated on the liquid crystal coating or a polarizing film is attached to form a linear polarizing layer.
  • the alignment coating, the liquid crystal coating and the linear polarizing layer constitute the polarizing filter layer.
  • the present application also proposes a display terminal, which includes a display panel, wherein the display panel includes:
  • a light emitting device layer is disposed on the substrate
  • polarizing filter layer disposed on the light-emitting side of the light-emitting device layer, wherein the polarizing filter layer comprises a liquid crystal coating
  • a functional layer is arranged on a side of the polarizing filter layer close to the substrate, and a surface of the polarizing filter layer close to the substrate is in direct contact with the functional layer, and the functional layer is an encapsulation layer;
  • the touch control layer is arranged on a side of the light emitting device layer close to the substrate.
  • the present application sets a polarizing filter layer on the light-emitting side of the light-emitting device layer, so that ambient light from the outside first passes through the polarizing filter layer into the display panel, and then is reflected back to the polarizing filter layer by the metal layer in the display panel and absorbed, thereby eliminating or greatly reducing the reflection effect of the display panel on the external ambient light, and improving the dark state display of the display panel; moreover, since the present application sets the surface of the polarizing filter layer close to the substrate side to be in direct contact with the encapsulation layer or the touch layer, the polarizing filter layer can directly become a film layer inside the display panel through processes such as coating, so that the phase delay parameter of the polarizing filter layer can be set according to the requirements of each display panel, achieving a good match with the display panel, and better improving the dark state display effect.
  • FIG1 is a schematic diagram of a first structure of a display panel described in the present application.
  • FIG2 is a schematic diagram of a second structure of the display panel described in the present application.
  • FIG3 is a schematic diagram of a third structure of the display panel described in the present application.
  • FIG4 is a schematic diagram of the stacked structure of the refractive layer and the alignment film layer of the present application.
  • FIG5 is a flowchart of a method for manufacturing a display panel according to the present application.
  • 6 to 12 are schematic flow charts of the method for manufacturing the display panel described in the present application.
  • the present application provides a display panel, including a substrate 100, a light-emitting device layer 400, a functional layer 500, and a polarizing filter layer 700.
  • the light-emitting device layer 400 is disposed on the substrate 100
  • the polarizing filter layer 700 is disposed on the light-emitting side of the light-emitting device layer 400
  • the polarizing filter layer 700 includes a liquid crystal coating 720.
  • the functional layer 500 is disposed on a side of the polarizing filter layer 700 close to the substrate 100
  • the functional layer 500 is an encapsulation layer 510 or a touch layer 520
  • the surface of the polarizing filter layer 700 close to the substrate 100 is in direct contact with the functional layer 500.
  • the present application sets a polarizing filter layer 700 on the light-emitting side of the light-emitting device layer 400, so that the ambient light from the outside first passes through the polarizing filter layer 700 and enters the interior of the display panel, and then is reflected back to the polarizing filter layer 700 by the metal layer 600 in the display panel and absorbed, thereby eliminating or greatly reducing the reflection effect of the display panel on the ambient light from the outside, and improving the dark state display of the display panel.
  • the present application sets the surface of the polarizing filter layer 700 close to the substrate 100 to be in direct contact with the encapsulation layer 510 or the touch layer 520, the polarizing filter layer 700 can be directly coated and other processes to become a film layer inside the display panel, so that the phase delay parameter of the polarizing filter layer 700 can be set according to the needs of each display panel, and achieve a good match with the display panel, so as to better improve the dark state display effect.
  • the display panel may be an LED display panel, a Mini-LED display panel, or a Micro-LED display panel, as shown in FIG1 .
  • the display panel may also be an OLED display panel, as shown in FIG2 .
  • the light emitting device layer 400 may include a plurality of light emitting devices, and the light emitting devices may be OLED light emitting devices, LED chips, Mini-LED chips, Micro-LED chips, and the like.
  • the metal layer 600 may be a reflective film layer independently provided in the display panel, or other metal layers 600 with a reflective function in the display panel may be reused as the reflective film layer.
  • the metal layer 600 may be a reflective film layer 200 disposed on the side of the light-emitting device layer 400 close to the substrate 100.
  • the display panel may include a substrate 100, a reflective film layer 200 disposed on the substrate 100, an array drive layer 300 disposed on the reflective film layer 200, a light-emitting device layer 400 disposed on the array drive layer 300, an encapsulation layer 510 disposed on the light-emitting device layer 400, a polarizing filter layer 700 disposed on the encapsulation layer 510, a touch layer 520 disposed on the polarizing filter layer 700, an optical adhesive layer 910 disposed on the touch layer 520, and a transparent cover plate 900 disposed on the optical adhesive layer 910.
  • the functional layer 500 is the encapsulation layer 510, and the side of the polarizing filter layer 700 close to the substrate 100 is in direct contact with the encapsulation layer 510.
  • the touch layer 520 may also be disposed on a side of the light emitting device layer 400 close to the substrate 100 .
  • the optical adhesive layer 910 may be directly disposed on the polarizing filter layer 700 .
  • the touch layer 520 may include a plurality of touch electrodes, and the plurality of touch electrodes are encapsulated by an inorganic insulating film layer.
  • the inorganic insulating film layer encapsulated on the plurality of touch electrodes is equivalent to a film layer in the display panel that is in direct contact with the side of the polarizing filter layer 700 close to the substrate 100.
  • the array driving layer 300 may include a plurality of thin film transistors 310, and the thin film transistors 310 are electrically connected to the light emitting device, so as to control the light emitting device to display.
  • the orthographic projection of the thin film transistor 310 on the metal layer 600 may be located within the metal layer 600, and the metal layer 600 shields the channel of the thin film transistor 310, so as to reduce the light-generated leakage current and improve the device stability of the thin film transistor 310.
  • the metal layer 600 when the metal layer 600 is a reflective film layer 200 arranged on the side of the light-emitting device layer 400 close to the substrate 100, the metal layer 600 can be arranged on the entire surface of the substrate 100, thereby also playing a shielding role for the channel of the thin film transistor 310, and can reflect the external ambient light incident into the display panel back to the light-emitting surface of the display panel, thereby being absorbed by the polarizing filter layer 700.
  • a metal layer 600 is arranged on the side of the light-emitting device layer 400 close to the substrate 100, so that the metal layer 600 can not only block the channel of the thin film transistor 310 to prevent external ambient light from being incident on the channel of the thin film transistor 310 from the backlight side of the display panel, thereby reducing the photogenerated leakage current of the thin film transistor 310, but also reflect the external ambient light incident on the display panel back to the light output surface of the display panel, thereby being absorbed by the polarizing filter layer 700.
  • the light-emitting device layer 400 may include an anode layer 410, an organic light-emitting layer 420 arranged on the anode layer 410, and a cathode layer 430 arranged on the organic light-emitting layer 420.
  • the anode layer 410, the organic light-emitting layer 420 and the cathode layer 430 are stacked to form a light-emitting device, and the encapsulation layer 510 is arranged on the side of the cathode layer 430 away from the organic light-emitting layer 420.
  • the metal layer 600 can be reused from the cathode layer 430 of the OELD light-emitting device, and the material of the metal layer 600 can be a Mg/Al alloy material.
  • the cathode layer 430 in the light-emitting device layer 400 can be a Mg/Al alloy material, and the cathode layer 430 is continuously arranged on the entire surface of the light-emitting device layer 400, that is, multiple light-emitting devices can share the same continuous cathode layer 430, so that the cathode layer 430 can constitute the metal layer 600 that reflects the external ambient light back to the light-emitting surface of the display panel.
  • the polarizing filter layer 700 is always located on the side of the metal layer 600 close to the light emitting surface of the display panel, that is, the external ambient light always passes through the polarizing filter layer 700 first and then enters the metal layer 600.
  • the role of the polarizing filter layer 700 can be the same as that of a "polarizer" with a compensation layer on the light-emitting side of a conventional display panel.
  • the role of the polarizing filter layer 700 is equivalent to that of a "circular polarizer" on the light-emitting side of a conventional display panel, and both of them can play the role of reducing the reflection of ambient light.
  • the process and materials for separately setting the metal layer 600 can be omitted, thereby reducing the manufacturing cost and the thickness of the display panel to achieve lightness and thinness.
  • the polarizing filter layer 700 may also include a linear polarizing layer 730.
  • the linear polarizing layer 730 may be a linear polarizing coating or a linear polarizing film.
  • the linear polarizing layer 730 is used to convert the external ambient light incident into the display panel into horizontal (or vertical) linear polarized light.
  • the liquid crystal coating 720 may be formed by coating a polymer material containing a plurality of liquid crystal molecules, and the ambient light becomes linearly polarized light after passing through the linear polarizing layer 730, and the linearly polarized light is then converted into circularly polarized light after passing through the liquid crystal coating 720. Therefore, the liquid crystal coating 720 acts as a quarter wave plate, and can convert the horizontal (or vertical) linearly polarized light polarized by the linear polarizing layer 730 into left-handed (or right-handed) circularly polarized light.
  • ⁇ n*d represents the phase delay parameter of the liquid crystal coating 720, which is related to the thickness d of the liquid crystal coating 720 and the material properties of the liquid crystal molecules, and the phase delay parameter has a certain influence on the display effect of the display panel. Therefore, the display effect of the display panel can be optimized by adjusting the thickness d of the liquid crystal coating 720 or the material of the liquid crystal molecules.
  • the same effect is achieved by changing the material of the liquid crystal molecules, that is, by adjusting the parameter ⁇ n of the liquid crystal material.
  • the specific adjustment depends on the situation and will not be described in detail in this embodiment.
  • the thickness d of the liquid crystal coating 720 can be any value between 1 micron and 10 microns.
  • the thickness of the liquid crystal coating 720 can be 1 micron, 2.5 microns, 3 microns, 5 microns, 6 microns, 7 microns, 8.5 microns, 10 microns, etc.
  • the thickness selection of the liquid crystal coating 720 can be adjusted according to the display optical characteristics of different display panels. The above values do not represent a limit on the thickness of the liquid crystal coating 720.
  • the polarizing filter layer 700 may further include an alignment coating 710.
  • the alignment coating 710 may be an organic material layer such as a polyimide coating, or an inorganic material layer such as a SiN x or SiO x coating having an alignment groove formed on the surface by etching, evaporation, sputtering, or other processes.
  • the alignment coating 710 may be disposed on a side of the liquid crystal coating 720 close to the light emitting device layer 400, or the liquid crystal coating 720 may be disposed on a side of the alignment coating 710 away from the light emitting device layer 400, and the alignment coating 710 is in direct contact with the liquid crystal coating 720, or the surface of the alignment coating 710 with the alignment groove is in direct contact with the liquid crystal coating 720.
  • the liquid crystal coating 720 may be directly disposed on the side of the alignment coating 710 away from the light emitting device layer 400 by coating or other methods.
  • the alignment coating 710 can make the liquid crystal molecules in the liquid crystal coating 720 have a suitable pre-tilt angle, thereby realizing the optical characteristics of a quarter wave plate.
  • the metal layer 600 converts the left-handed (or right-handed) circularly polarized light into right-handed (or left-handed) circularly polarized light and reflects it back to the liquid crystal coating 720.
  • the right-handed (or left-handed) circularly polarized light is converted into vertical (or horizontal) linear polarized light after passing through the liquid crystal coating 720 again.
  • the polarization direction of the vertical (or horizontal) linear polarized light is perpendicular to the light transmission axis of the linear polarizing layer 730, so it cannot pass through the linear polarizing layer 730, thereby achieving absorption of external ambient light.
  • the display panel may further include a refractive film layer 800.
  • the refractive film layer 800 may include a first refractive layer 810 and a second refractive layer 820 disposed on the first refractive layer.
  • the refractive index of the first refractive layer 810 is less than the refractive index of the second refractive layer 820.
  • the first refractive layer 810 can be reused from the encapsulation layer 510, and the second refractive layer 820 can be reused from the alignment coating 710.
  • the functional layer 500 is the encapsulation layer 510.
  • the encapsulation layer 510 is arranged on the light-emitting side of the light-emitting device layer 400
  • the polarizing filter layer 700 is arranged on the side of the encapsulation layer 510 away from the light-emitting device layer 400
  • the touch layer 520 is arranged on the side of the polarizing filter layer 700 away from the encapsulation layer 510.
  • the encapsulation layer 510 is in direct contact with the alignment coating 710 of the polarizing filter layer 700.
  • the alignment coating 710 is an inorganic material layer such as SiNx , SiOx coating, etc., and the surface of the alignment coating 710 close to the liquid crystal coating 720 is processed by etching, evaporation, sputtering, etc. to form alignment grooves.
  • the refractive index of the first refractive layer 810 can be 1.4-1.5
  • the refractive index of the second refractive layer 820 can be 1.6-1.7
  • the difference in refractive index between the second refractive layer 820 and the first refractive layer 810 is in the range of 0.1-0.2, so that the emitted light of the light-emitting device can achieve a focusing effect through the refractive layer 520, thereby improving the front view light brightness of the display panel.
  • a light-collecting structure may be provided on the interface between the first refractive layer 810 and the second refractive layer 820 .
  • the first refractive layer 810 may be provided with at least one groove 830 on the side away from the light emitting device layer 400
  • the second refractive layer 820 may be formed with a protrusion 840 located in the groove 830 on the side close to the first refractive layer 810, and the groove 830 and the protrusion 840 cooperate to form a light-collecting structure.
  • the protrusion 840 forms a microlens structure in the display panel to collect the emitted light from the light emitting device layer 400, thereby effectively improving the front view light brightness of the display panel.
  • the surface of the groove 830 may be a smooth spherical surface, and the center of the spherical surface may be located in the second refractive layer 820.
  • the shape of the protrusion 840 is adapted to the shape of the concave space of the groove 830, that is, the protrusion 840 constitutes a hemispherical microlens protruding into the first refractive layer 810.
  • the hemispherical microlens can refract and reflect light emitted from the light emitting device layer 400 in various directions, so that the emitted light is emitted in a direction perpendicular to the display panel, thereby increasing the front view light output brightness of the display panel and improving the front view display effect.
  • the light emitting device layer 400 may include a plurality of light emitting devices of different colors.
  • the light emitting device layer 400 may include a plurality of first light emitting devices 401, a plurality of second light emitting devices 402, and a plurality of third light emitting devices 403.
  • the first light emitting device 401 may be a red light emitting device
  • the second light emitting device 402 may be a green light emitting device
  • the third light emitting device 403 may be a blue light emitting device.
  • the plurality of grooves 830 may include a first groove 831 corresponding to the first light emitting device 401, a second groove 832 corresponding to the second light emitting device 402, and a third groove 833 corresponding to the third light emitting device 403.
  • the orthographic projection of the light emitting device on the refractive film layer 800 may be located in the groove 830.
  • the orthographic projection of the first light emitting device 401 on the refractive film layer 800 may be located in the first groove 831
  • the orthographic projection of the second light emitting device 402 on the refractive film layer 800 may be located in the second groove 832
  • the orthographic projection of the third light emitting device 403 on the refractive film layer 800 may be located in the third groove 833.
  • the groove 830 may be directly opposite to the light emitting device, so that the protrusion 840 in the groove 830 can better refract and reflect the emitted light of the light emitting device, further improving the front view light output rate of the light emitting device and improving the front view display effect.
  • the areas of the grooves 830 corresponding to the light emitting devices of different colors may be different.
  • the area of the first groove 831 corresponding to the first light emitting device 401 is larger than the area of the second groove 832 corresponding to the second light emitting device 402, and the area of the first groove 831 corresponding to the first light emitting device 401 is smaller than the area of the third groove 833 corresponding to the third light emitting device 403.
  • the areas of the grooves 830 corresponding to the second light emitting device 402, the first light emitting device 401, and the third light emitting device 403 gradually increase.
  • the volume of the protrusion 840 of the second groove 832, the first groove 831, and the third groove 833 gradually increases. It can be understood that the larger the area of the protrusion 840 in the top view direction of the display panel, or the larger the volume of the protrusion 840 in the groove 830, the better the light gathering effect of the protrusion 840. Therefore, the protrusion 840 in the third groove 833 can have a better light gathering effect on the output light of the third light-emitting device 403 (i.e., the blue light-emitting device) with lower light-emitting efficiency, thereby improving the blue light output rate of the display panel.
  • the third light-emitting device 403 i.e., the blue light-emitting device
  • a metal layer 600 is arranged on one side of the light-emitting device layer 400, and a polarizing filter layer 700 is arranged on the functional layer 500 located on the light-emitting side of the light-emitting device layer 400 or in the functional layer 500, so that ambient light from the outside first passes through the polarizing filter layer 700 to enter the inside of the display panel, and then is reflected back to the polarizing filter layer 700 by the metal layer 600 and absorbed, thereby eliminating or greatly reducing the reflection effect of the display panel on the external ambient light, and improving the dark state display of the display panel; moreover, since the surface of the polarizing filter layer 700 close to the substrate 100 is arranged in direct contact with the functional layer 500 in the present application, the polarizing filter layer 700 can be directly formed into a film layer inside the display panel through processes such as coating, so that the phase delay parameter of the polarizing filter layer 700 can be set according to the requirements of each display panel, so as to achieve a good match with the display panel and better improve
  • the embodiment of the present application further provides a method for manufacturing a display panel, which is used to manufacture the display panel in the above embodiment.
  • a method for manufacturing a display panel may include:
  • a polarizing filter layer 700 on the light-emitting side of the light-emitting device layer 400, wherein the polarizing filter layer 700 includes a liquid crystal coating layer 720 formed by a coating/spraying/deposition process, and a side of the polarizing filter layer 700 close to the substrate 100 is in direct contact with the functional layer 500, as shown in FIGS. 10 and 11;
  • the display panel is manufactured through the above steps, so that the polarizing filter layer 700 can be manufactured as the internal film layer of the display panel, and each display panel can be provided with a polarizing filter layer 700 with different optical parameters according to its display requirements, so as to achieve better adaptation and further improve the dark state display effect of the display panel. Moreover, since the polarizing filter layer 700 can be manufactured integrally with the display panel, its cost is less than the cost of purchasing a polarizer and bonding it to the display panel, which is conducive to maximizing the benefits.
  • the metal layer 600 can be formed simultaneously when the light-emitting device layer 400 is formed. At this time, the metal layer 600 can be reused from the cathode layer 430 in the light-emitting device layer 400.
  • step S200 before forming the light emitting device layer 400 , the array driving layer 300 needs to be formed on the substrate 100 , and then the light emitting device layer 400 is formed on the array driving layer 300 .
  • step S400 may include:
  • the alignment material can be formed on the functional layer 500 by coating, immersion dipping, etc.
  • the alignment coating 710 , the liquid crystal coating 720 and the linear polarizing layer 730 constitute a polarizing filter layer 700 .
  • the present application also provides a display terminal, which may include the display panel of the above embodiment, or a display panel manufactured by the manufacturing method of the display panel of the above embodiment.
  • the display terminal may include electronic devices such as mobile phones, televisions, and laptops.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

Provided in the present application are a display panel and a manufacturing method therefor, and a display terminal. The display panel comprises a substrate, a light-emitting device layer arranged on the substrate, a polarizing filter layer arranged on a light-emergent side of the light emitting device layer, and a functional layer, wherein the surface on the side of the polarizing filter layer close to the substrate is in direct contact with the functional layer, and the functional layer is a package layer or a touch control layer.

Description

显示面板及其制作方法、显示终端Display panel and manufacturing method thereof, and display terminal 技术领域Technical Field
本申请涉及显示技术的领域，具体涉及一种显示面板及其制作方法、显示终端。The present application relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a display terminal.
背景技术Background technique
在显示领域中，各种显示设备对光学要求越来越高，例如在暗态显示方面，要求屏幕越黑越好，对应必然需要反射率越低越好。现阶段，显示设备通常都是在显示面板的出光面贴合带有补偿层的偏光片来改善暗态显示效果。In the display field, various display devices have increasingly higher requirements for optics. For example, in terms of dark display, the darker the screen, the better, which necessarily requires the reflectivity to be as low as possible. At present, display devices usually attach a polarizer with a compensation layer to the light-emitting surface of the display panel to improve the dark display effect.
但是，不同显示设备根据所采用的显示面板不同，其对补偿层的要求也不相同。而市场上的偏光片一般都是非定制化制作，固定参数的偏光片可能无法与某些显示面板达到较高的匹配度，导致显示设备的暗态显示效果不佳。However, different display devices have different requirements for compensation layers according to the display panels they use. Polaroids on the market are generally not customized, and polaroids with fixed parameters may not be able to achieve a high degree of matching with certain display panels, resulting in poor dark display effects of the display device.
技术问题technical problem
本申请提供一种显示面板及其制作方法、显示终端，以改善当前的显示设备因显示面板与偏光片匹配度不高导致暗态显示效果不佳的技术问题。The present application provides a display panel and a manufacturing method thereof, and a display terminal, so as to improve the technical problem of poor dark state display effect caused by poor matching between the display panel and the polarizer in current display devices.
技术解决方案Technical Solutions
本申请提供一种显示面板，包括：The present application provides a display panel, comprising:
衬底；substrate;
发光器件层，设置于所述衬底上；A light emitting device layer is disposed on the substrate;
偏光过滤层，设置于所述发光器件层的出光侧，所述偏光过滤层包括液晶涂层；以及a polarizing filter layer, disposed on the light-emitting side of the light-emitting device layer, wherein the polarizing filter layer comprises a liquid crystal coating; and
功能层，设置于所述偏光过滤层靠近所述衬底的一侧，且所述偏光过滤层靠近所述衬底一侧的表面与所述功能层直接接触，所述功能层为封装层或触控层。The functional layer is arranged on a side of the polarizing filter layer close to the substrate, and a surface of the polarizing filter layer close to the substrate is in direct contact with the functional layer, and the functional layer is an encapsulation layer or a touch layer.
本申请还提出了一种显示面板的制作方法，用于制作上述显示面板，所述显示面板的制作方法包括：The present application also proposes a method for manufacturing a display panel, which is used to manufacture the above-mentioned display panel. The method for manufacturing the display panel includes:
提供一衬底；providing a substrate;
在所述衬底上形成发光器件层；forming a light emitting device layer on the substrate;
在所述发光器件层的出光侧形成功能层，所述功能层为封装层或触控层；Forming a functional layer on the light-emitting side of the light-emitting device layer, wherein the functional layer is an encapsulation layer or a touch layer;
在所述发光器件层的出光侧形成偏光过滤层，所述偏光过滤层包括通过涂布/喷涂/沉积工艺形成的液晶涂层，所述偏光过滤层靠近所述衬底的一侧与所述功能层直接接触。A polarizing filter layer is formed on the light-emitting side of the light-emitting device layer, wherein the polarizing filter layer comprises a liquid crystal coating formed by a coating/spraying/deposition process, and a side of the polarizing filter layer close to the substrate is in direct contact with the functional layer.
在本申请的显示面板的制作方法中，所述在所述发光器件层的出光侧形成偏光过滤层的步骤包括：In the method for manufacturing a display panel of the present application, the step of forming a polarizing filter layer on the light-emitting side of the light-emitting device layer includes:
在所述功能层上形成配向材料，并对所述配向材料进行烘烤、紫外线照射固化形成配向涂层；forming an alignment material on the functional layer, and baking and curing the alignment material by ultraviolet irradiation to form an alignment coating;
在所述配向涂层上涂布液晶材料，并对所述液晶材料进行烘烤、紫外线照射固化成膜，以形成液晶涂层；Applying a liquid crystal material on the alignment coating, and baking and curing the liquid crystal material by ultraviolet irradiation to form a film, so as to form a liquid crystal coating;
在所述液晶涂层上涂布偏光材料或贴合偏光片以形成线偏光层，所述配向涂层、所述液晶涂层与所述线偏光层构成所述偏光过滤层。A polarizing material is coated on the liquid crystal coating or a polarizing film is attached to form a linear polarizing layer. The alignment coating, the liquid crystal coating and the linear polarizing layer constitute the polarizing filter layer.
本申请还提出了一种显示终端，其包括显示面板，所述显示面板包括：The present application also proposes a display terminal, which includes a display panel, wherein the display panel includes:
衬底；substrate;
发光器件层，设置于所述衬底上；A light emitting device layer is disposed on the substrate;
偏光过滤层，设置于所述发光器件层的出光侧，所述偏光过滤层包括液晶涂层；以及a polarizing filter layer, disposed on the light-emitting side of the light-emitting device layer, wherein the polarizing filter layer comprises a liquid crystal coating; and
功能层，设置于所述偏光过滤层靠近所述衬底的一侧，且所述偏光过滤层靠近所述衬底一侧的表面与所述功能层直接接触，所述功能层为封装层；A functional layer is arranged on a side of the polarizing filter layer close to the substrate, and a surface of the polarizing filter layer close to the substrate is in direct contact with the functional layer, and the functional layer is an encapsulation layer;
触控层，设置于所述发光器件层靠近所述衬底的一侧。The touch control layer is arranged on a side of the light emitting device layer close to the substrate.
有益效果Beneficial Effects
本申请通过在发光器件层的出光侧设置偏光过滤层，使来自外界的环境光先经过偏光过滤层进入显示面板内部，然后被显示面板内的金属层反射回偏光过滤层并被吸收，从而消除或较大程度减轻显示面板对外界环境光的反射作用，改善显示面板的暗态显示；而且，由于本申请将所述偏光过滤层靠近所述衬底一侧的表面设置为与所述封装层或所述触控层直接接触，使所述偏光过滤层可以直接通过涂布等工艺成为所述显示面板内部的膜层，从而使偏光过滤层的相位延迟参数可以根据每一显示面板的需求进行设置，与显示面板达到良好的匹配度，更好地改善暗态显示效果。The present application sets a polarizing filter layer on the light-emitting side of the light-emitting device layer, so that ambient light from the outside first passes through the polarizing filter layer into the display panel, and then is reflected back to the polarizing filter layer by the metal layer in the display panel and absorbed, thereby eliminating or greatly reducing the reflection effect of the display panel on the external ambient light, and improving the dark state display of the display panel; moreover, since the present application sets the surface of the polarizing filter layer close to the substrate side to be in direct contact with the encapsulation layer or the touch layer, the polarizing filter layer can directly become a film layer inside the display panel through processes such as coating, so that the phase delay parameter of the polarizing filter layer can be set according to the requirements of each display panel, achieving a good match with the display panel, and better improving the dark state display effect.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是本申请所述显示面板的第一种结构示意图；FIG1 is a schematic diagram of a first structure of a display panel described in the present application;
图2是本申请所述显示面板的第二种结构示意图；FIG2 is a schematic diagram of a second structure of the display panel described in the present application;
图3是本申请所述显示面板的第三种结构示意图；FIG3 is a schematic diagram of a third structure of the display panel described in the present application;
图4是本申请所述折射层与所述配向膜层的叠构示意图；FIG4 is a schematic diagram of the stacked structure of the refractive layer and the alignment film layer of the present application;
图5是本申请所述显示面板的制作方法的流程框图；FIG5 is a flowchart of a method for manufacturing a display panel according to the present application;
图6至图12是本申请所述显示面板的制作方法的流程示意图。6 to 12 are schematic flow charts of the method for manufacturing the display panel described in the present application.
本发明的实施方式Embodiments of the present invention
为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。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。In order to make the purpose, technical solution and effect of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific examples described here are only used to explain the present application and are not used to limit the present application.
在显示领域中，在暗态显示方面，要求屏幕越黑越好，对应必然需要反射率越低越好。现阶段，显示设备通常都是在显示面板的出光面贴合带有补偿层的偏光片来改善暗态显示效果。但是，不同显示设备根据所采用的显示面板不同，其对补偿层的要求也不相同。而市场上的偏光片一般都是非定制化制作，偏光片可能无法与某些显示面板达到较高的匹配度，导致显示设备的暗态显示效果不佳。本申请基于上述技术问题提出了以下方案。In the display field, in terms of dark state display, the screen is required to be as dark as possible, which necessarily requires the reflectivity to be as low as possible. At present, display devices usually attach a polarizer with a compensation layer to the light-emitting surface of the display panel to improve the dark state display effect. However, different display devices have different requirements for the compensation layer depending on the display panel used. Polarizers on the market are generally non-customized, and polarizers may not be able to achieve a high degree of matching with certain display panels, resulting in poor dark state display effects of display devices. Based on the above technical problems, this application proposes the following solutions.
请参阅图1至图4，本申请提供一种显示面板，包括衬底100、发光器件层400、功能层500和偏光过滤层700，发光器件层400设置于衬底100上，偏光过滤层700设置于发光器件层400的出光侧，偏光过滤层700包括液晶涂层720。功能层500设置于偏光过滤层700靠近衬底100的一侧，功能层500为封装层510或触控层520，以及偏光过滤层700靠近衬底100一侧的表面与功能层500直接接触。Referring to FIGS. 1 to 4 , the present application provides a display panel, including a substrate 100, a light-emitting device layer 400, a functional layer 500, and a polarizing filter layer 700. The light-emitting device layer 400 is disposed on the substrate 100, the polarizing filter layer 700 is disposed on the light-emitting side of the light-emitting device layer 400, and the polarizing filter layer 700 includes a liquid crystal coating 720. The functional layer 500 is disposed on a side of the polarizing filter layer 700 close to the substrate 100, the functional layer 500 is an encapsulation layer 510 or a touch layer 520, and the surface of the polarizing filter layer 700 close to the substrate 100 is in direct contact with the functional layer 500.
本申请通过在发光器件层400的出光侧设置偏光过滤层700，使来自外界的环境光先经过偏光过滤层700进入显示面板内部，然后被显示面板内的金属层600反射回偏光过滤层700并被吸收，从而消除或较大程度减轻显示面板对外界环境光的反射作用，改善显示面板的暗态显示。而且，由于本申请将偏光过滤层700靠近衬底100一侧的表面设置为封装层510或触控层520直接接触，使偏光过滤层700可以直接通过涂布等工艺成为显示面板内部的膜层，从而使偏光过滤层700的相位延迟参数可以根据每一显示面板的需求进行设置，与显示面板达到良好的匹配度，更好地改善暗态显示效果。The present application sets a polarizing filter layer 700 on the light-emitting side of the light-emitting device layer 400, so that the ambient light from the outside first passes through the polarizing filter layer 700 and enters the interior of the display panel, and then is reflected back to the polarizing filter layer 700 by the metal layer 600 in the display panel and absorbed, thereby eliminating or greatly reducing the reflection effect of the display panel on the ambient light from the outside, and improving the dark state display of the display panel. Moreover, since the present application sets the surface of the polarizing filter layer 700 close to the substrate 100 to be in direct contact with the encapsulation layer 510 or the touch layer 520, the polarizing filter layer 700 can be directly coated and other processes to become a film layer inside the display panel, so that the phase delay parameter of the polarizing filter layer 700 can be set according to the needs of each display panel, and achieve a good match with the display panel, so as to better improve the dark state display effect.
现结合具体实施例对本申请的技术方案进行描述。需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。The technical solution of the present application is now described in conjunction with specific embodiments. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.
在本申请的显示面板中，显示面板可以是LED显示面板、Mini-LED显示面板、Micro-LED显示面板，如图1所示。或者，显示面板也可以是OLED显示面板，如图2所示。In the display panel of the present application, the display panel may be an LED display panel, a Mini-LED display panel, or a Micro-LED display panel, as shown in FIG1 . Alternatively, the display panel may also be an OLED display panel, as shown in FIG2 .
在本实施例中，发光器件层400可以包括多个发光器件，发光器件可以是OLED发光器件、LED芯片、Mini-LED芯片、Micro-LED芯片等。In this embodiment, the light emitting device layer 400 may include a plurality of light emitting devices, and the light emitting devices may be OLED light emitting devices, LED chips, Mini-LED chips, Micro-LED chips, and the like.
在本实施例中，金属层600可以是在显示面板内单独设置的反射膜层，或者也可以由显示面板内其他具有反射作用的金属层600复用为反射膜层。In this embodiment, the metal layer 600 may be a reflective film layer independently provided in the display panel, or other metal layers 600 with a reflective function in the display panel may be reused as the reflective film layer.
例如，请参阅图1，当显示面板为LED显示面板、Mini-LED芯片、Micro-LED芯片时，金属层600可以是设置在发光器件层400靠近衬底100一侧的反射膜层200。具体地，显示面板可以包括衬底100、设置于衬底100上的反射膜层200、设置于反射膜层200上的阵列驱动层300、设置于阵列驱动层300上的发光器件层400、设置于发光器件层400上的封装层510、设置于封装层510上的偏光过滤层700、设置于偏光过滤层700上的触控层520、设置于触控层520上的光学胶层910和设置于光学胶层910上的透明盖板900。此时，功能层500为封装层510，偏光过滤层700靠近衬底100的一侧与封装层510直接接触。For example, referring to FIG. 1 , when the display panel is an LED display panel, a Mini-LED chip, or a Micro-LED chip, the metal layer 600 may be a reflective film layer 200 disposed on the side of the light-emitting device layer 400 close to the substrate 100. Specifically, the display panel may include a substrate 100, a reflective film layer 200 disposed on the substrate 100, an array drive layer 300 disposed on the reflective film layer 200, a light-emitting device layer 400 disposed on the array drive layer 300, an encapsulation layer 510 disposed on the light-emitting device layer 400, a polarizing filter layer 700 disposed on the encapsulation layer 510, a touch layer 520 disposed on the polarizing filter layer 700, an optical adhesive layer 910 disposed on the touch layer 520, and a transparent cover plate 900 disposed on the optical adhesive layer 910. At this time, the functional layer 500 is the encapsulation layer 510, and the side of the polarizing filter layer 700 close to the substrate 100 is in direct contact with the encapsulation layer 510.
需要说明的是，在本实施例中，触控层520也可以设置于发光器件层400靠近衬底100的一侧，此时，光学胶层910可以直接设置在偏光过滤层700上。It should be noted that, in this embodiment, the touch layer 520 may also be disposed on a side of the light emitting device layer 400 close to the substrate 100 . In this case, the optical adhesive layer 910 may be directly disposed on the polarizing filter layer 700 .
在本实施例中，请参阅图3，触控层520可以包括多个触控电极，多个触控电极通过无机绝缘膜层进行封装。此时，封装在多个触控电极上的无机绝缘膜层相当于显示面板内与偏光过滤层700靠近衬底100一侧的直接接触的膜层。In this embodiment, referring to FIG3 , the touch layer 520 may include a plurality of touch electrodes, and the plurality of touch electrodes are encapsulated by an inorganic insulating film layer. At this time, the inorganic insulating film layer encapsulated on the plurality of touch electrodes is equivalent to a film layer in the display panel that is in direct contact with the side of the polarizing filter layer 700 close to the substrate 100.
请参阅图1，在本实施例中，阵列驱动层300可以包括多个薄膜晶体管310，薄膜晶体管310与发光器件电性连接，从而控制发光器件进行显示。薄膜晶体管310在金属层600上的正投影可以位于金属层600内，金属层600对薄膜晶体管310的沟道进行遮挡，从而减小光生漏电流，提高薄膜晶体管310的器件稳定性。Referring to FIG. 1 , in this embodiment, the array driving layer 300 may include a plurality of thin film transistors 310, and the thin film transistors 310 are electrically connected to the light emitting device, so as to control the light emitting device to display. The orthographic projection of the thin film transistor 310 on the metal layer 600 may be located within the metal layer 600, and the metal layer 600 shields the channel of the thin film transistor 310, so as to reduce the light-generated leakage current and improve the device stability of the thin film transistor 310.
在本实施例中，当金属层600为设置在发光器件层400靠近衬底100一侧的反射膜层200时，金属层600可以在衬底100上整面设置，从而对薄膜晶体管310的沟道同样起到遮挡作用，并且能够将入射至显示面板内的外界环境光反射回显示面板的出光面，从而被偏光过滤层700所吸收。In this embodiment, when the metal layer 600 is a reflective film layer 200 arranged on the side of the light-emitting device layer 400 close to the substrate 100, the metal layer 600 can be arranged on the entire surface of the substrate 100, thereby also playing a shielding role for the channel of the thin film transistor 310, and can reflect the external ambient light incident into the display panel back to the light-emitting surface of the display panel, thereby being absorbed by the polarizing filter layer 700.
本实施例通过在发光器件层400靠近衬底100的一侧设置金属层600，使金属层600既可以对薄膜晶体管310的沟道进行遮挡，防止外界环境光从显示面板的背光侧入射至薄膜晶体管310的沟道从而减小薄膜晶体管310的光生漏电流，还能够将入射至显示面板内的外界环境光反射回显示面板的出光面，从而被偏光过滤层700所吸收。In this embodiment, a metal layer 600 is arranged on the side of the light-emitting device layer 400 close to the substrate 100, so that the metal layer 600 can not only block the channel of the thin film transistor 310 to prevent external ambient light from being incident on the channel of the thin film transistor 310 from the backlight side of the display panel, thereby reducing the photogenerated leakage current of the thin film transistor 310, but also reflect the external ambient light incident on the display panel back to the light output surface of the display panel, thereby being absorbed by the polarizing filter layer 700.
请参阅图2，在本申请的显示面板中，当显示面板为OLED显示面板时，发光器件层400可以包括阳极层410、设置于阳极层410上的有机发光层420和设置于有机发光层420上的阴极层430，阳极层410、有机发光层420和阴极层430叠层设置以构成发光器件，封装层510设置于阴极层430远离有机发光层420的一侧。Please refer to Figure 2. In the display panel of the present application, when the display panel is an OLED display panel, the light-emitting device layer 400 may include an anode layer 410, an organic light-emitting layer 420 arranged on the anode layer 410, and a cathode layer 430 arranged on the organic light-emitting layer 420. The anode layer 410, the organic light-emitting layer 420 and the cathode layer 430 are stacked to form a light-emitting device, and the encapsulation layer 510 is arranged on the side of the cathode layer 430 away from the organic light-emitting layer 420.
在本实施例中，金属层600可以由OELD发光器件的阴极层430复用而来，金属层600的材质可以为Mg/Al合金材料。具体地，发光器件层400内的阴极层430可以为Mg/Al合金材料，阴极层430在发光器件层400内整面连续设置，即多个发光器件可以共用同一连续的阴极层430，从而使阴极层430可以构成将外界环境光反射回显示面板的出光面的金属层600。In this embodiment, the metal layer 600 can be reused from the cathode layer 430 of the OELD light-emitting device, and the material of the metal layer 600 can be a Mg/Al alloy material. Specifically, the cathode layer 430 in the light-emitting device layer 400 can be a Mg/Al alloy material, and the cathode layer 430 is continuously arranged on the entire surface of the light-emitting device layer 400, that is, multiple light-emitting devices can share the same continuous cathode layer 430, so that the cathode layer 430 can constitute the metal layer 600 that reflects the external ambient light back to the light-emitting surface of the display panel.
在本实施例中，无论金属层600设置在显示面板内的何处，偏光过滤层700始终位于金属层600靠近显示面板的出光面的一侧。即，外界环境光始终先经过偏光过滤层700，再入射至金属层600上。In this embodiment, no matter where the metal layer 600 is disposed in the display panel, the polarizing filter layer 700 is always located on the side of the metal layer 600 close to the light emitting surface of the display panel, that is, the external ambient light always passes through the polarizing filter layer 700 first and then enters the metal layer 600.
在本实施例中，偏光过滤层700的作用可以与常规显示面板出光侧上带有补偿层的“偏光片”的作用相同。具体地，当显示面板为OLED显示面板、LED显示面板、Mini-LED显示面板、Micro-LED显示面板时，偏光过滤层700的作用相当于常规显示面板出光侧上的“圆偏光片”，它们都可以起到降低环境光反射的效果。In this embodiment, the role of the polarizing filter layer 700 can be the same as that of a "polarizer" with a compensation layer on the light-emitting side of a conventional display panel. Specifically, when the display panel is an OLED display panel, an LED display panel, a Mini-LED display panel, or a Micro-LED display panel, the role of the polarizing filter layer 700 is equivalent to that of a "circular polarizer" on the light-emitting side of a conventional display panel, and both of them can play the role of reducing the reflection of ambient light.
本实施例通过将发光器件的阴极层430复用为金属层600，可省去单独设置金属层600的制程与材料，降低制作成本并减薄显示面板的厚度，实现轻薄化。In this embodiment, by reusing the cathode layer 430 of the light-emitting device as the metal layer 600, the process and materials for separately setting the metal layer 600 can be omitted, thereby reducing the manufacturing cost and the thickness of the display panel to achieve lightness and thinness.
请参阅图2，在本申请的显示面板中，偏光过滤层700还可以包括线偏光层730，线偏光层730可以为线偏光涂层或线偏光片，线偏光层730用于将入射至显示面板内的外界环境光变成水平（或垂直）线偏振光。Please refer to Figure 2. In the display panel of the present application, the polarizing filter layer 700 may also include a linear polarizing layer 730. The linear polarizing layer 730 may be a linear polarizing coating or a linear polarizing film. The linear polarizing layer 730 is used to convert the external ambient light incident into the display panel into horizontal (or vertical) linear polarized light.
在本实施例中，液晶涂层720可以是包含有多个液晶分子的聚合物材料涂布而成，外界环境光经过线偏光层730之后变成线偏振光，线偏振光再经过液晶涂层720转变成圆偏振光。因此，液晶涂层720的作用相当于1/4波片，可以将经线偏光层730偏振之后的水平（或垂直）线偏振光变成左旋（或右旋）圆偏光。In this embodiment, the liquid crystal coating 720 may be formed by coating a polymer material containing a plurality of liquid crystal molecules, and the ambient light becomes linearly polarized light after passing through the linear polarizing layer 730, and the linearly polarized light is then converted into circularly polarized light after passing through the liquid crystal coating 720. Therefore, the liquid crystal coating 720 acts as a quarter wave plate, and can convert the horizontal (or vertical) linearly polarized light polarized by the linear polarizing layer 730 into left-handed (or right-handed) circularly polarized light.
在本实施例中，液晶涂层720的厚度满足：△n*d=1/4λ，其中，△n为液晶涂层720对寻常光的折射率n e与液晶涂层720对非常光的折射率n o的差值，即△n=n e-n o，d为液晶涂层720的厚度，λ为可见光的波长。需要说明的是，△n*d即表示液晶涂层720的相位延迟参数，该相位延迟参数与液晶涂层720的厚度d、液晶分子的材料特性相关，而且该相位延迟参数对显示面板的显示效果存在一定的影响，因此，可以通过调整液晶涂层720的厚度d或者液晶分子的材料来优化显示面板的显示效果。 In this embodiment, the thickness of the liquid crystal coating 720 satisfies: △n*d=1/4λ, where △n is the difference between the refractive index ne of the liquid crystal coating 720 for ordinary light and the refractive index no of the liquid crystal coating 720 for extraordinary light, that is, △n= ne - no , d is the thickness of the liquid crystal coating 720, and λ is the wavelength of visible light. It should be noted that △n*d represents the phase delay parameter of the liquid crystal coating 720, which is related to the thickness d of the liquid crystal coating 720 and the material properties of the liquid crystal molecules, and the phase delay parameter has a certain influence on the display effect of the display panel. Therefore, the display effect of the display panel can be optimized by adjusting the thickness d of the liquid crystal coating 720 or the material of the liquid crystal molecules.
具体地，举例说明：Specifically, the following examples are given:
如果显示面板的反射光偏蓝，说明显示面板暗态显示下反射的蓝光较多，对应λ值较小（一般在435纳米至435纳米）的短波段较多，则意味着短波段需要被补偿，因此需要减小液晶涂层720的厚度d，使其满足△n*d=1/4λ（△n为液晶分子的特性参数，在液晶分子相同时，该值为定值），让该波段实现1/4λ光程差，从而被线偏光层730吸收，消除显示面板的反射光偏蓝的问题。If the reflected light of the display panel is bluish, it means that the display panel reflects more blue light in the dark state, and there are more short-wave bands with smaller corresponding λ values (generally between 435 nanometers and 435 nanometers), which means that the short-wave bands need to be compensated. Therefore, the thickness d of the liquid crystal coating 720 needs to be reduced to satisfy △n*d=1/4λ (△n is the characteristic parameter of the liquid crystal molecules, and this value is a constant when the liquid crystal molecules are the same), so that the band can achieve a 1/4λ optical path difference, thereby being absorbed by the linear polarizing layer 730, eliminating the problem of the reflected light of the display panel being bluish.
如果显示面板的反射光偏红，说明显示面板暗态显示下反射的红光较多，对应λ值较大（一般在622纳米至760纳米）的长波段较多，则说明长波段需要被补偿，因此需要增大液晶涂层720的厚度d，使其满足△n*d=1/4λ（△n为液晶分子的特性参数，在液晶分子相同时，该值为定值），让该波段实现1/4λ光程差，从而被线偏光层730吸收，消除显示面板的反射光偏红的问题。If the reflected light of the display panel is reddish, it means that the display panel reflects more red light in the dark state, and there are more long-wave bands with larger corresponding λ values (generally between 622 nanometers and 760 nanometers), which means that the long-wave bands need to be compensated. Therefore, it is necessary to increase the thickness d of the liquid crystal coating 720 to satisfy △n*d=1/4λ (△n is a characteristic parameter of the liquid crystal molecules, and this value is a constant when the liquid crystal molecules are the same), so that the band can achieve an optical path difference of 1/4λ, thereby being absorbed by the linear polarizing layer 730, eliminating the problem of the reflected light of the display panel being reddish.
另外，在本实施例中，也通过改变液晶分子的材料，即通过调整液晶材料的参数△n来实现同样的效果，具体调节视情况而定，本实施例在此不做赘述。In addition, in this embodiment, the same effect is achieved by changing the material of the liquid crystal molecules, that is, by adjusting the parameter △n of the liquid crystal material. The specific adjustment depends on the situation and will not be described in detail in this embodiment.
在本实施例中，在显示面板的出光方向上，液晶涂层720的厚度d可以是1微米至10微米之间的任意值，例如，液晶涂层720的厚度可以是1微米、2.5微米、3微米、5微米、6微米、7微米、8.5微米、10微米等数值，液晶涂层720的厚度选择可以根据不同的显示面板的显示光学特性进行调整，以上数值不代表对液晶涂层720的厚度限制。In this embodiment, in the light emitting direction of the display panel, the thickness d of the liquid crystal coating 720 can be any value between 1 micron and 10 microns. For example, the thickness of the liquid crystal coating 720 can be 1 micron, 2.5 microns, 3 microns, 5 microns, 6 microns, 7 microns, 8.5 microns, 10 microns, etc. The thickness selection of the liquid crystal coating 720 can be adjusted according to the display optical characteristics of different display panels. The above values do not represent a limit on the thickness of the liquid crystal coating 720.
请参阅图2，在本实施例中，偏光过滤层700还可以包括配向涂层710，配向涂层710可以是有机材料层例如聚酰亚胺涂层，或者配向涂层710也可以是无机材料层，例如表面经过蚀刻、蒸镀、溅射等工艺处理形成有配向沟槽的SiN x、SiO x涂层等。配向涂层710可以设置于液晶涂层720靠近发光器件层400的一侧，或者说，液晶涂层720可以设置于配向涂层710远离发光器件层400的一侧，且配向涂层710与液晶涂层720直接接触，或者配向涂层710形成有配向沟槽的表面与液晶涂层720直接接触。具体地，液晶涂层720可以直接通过涂布等方式设置于配向涂层710远离发光器件层400一侧的侧面上。配向涂层710能够使液晶涂层720内的液晶分子具有适宜的预倾角，从而实现1/4波片的光学特性。 Please refer to FIG. 2 . In this embodiment, the polarizing filter layer 700 may further include an alignment coating 710. The alignment coating 710 may be an organic material layer such as a polyimide coating, or an inorganic material layer such as a SiN x or SiO x coating having an alignment groove formed on the surface by etching, evaporation, sputtering, or other processes. The alignment coating 710 may be disposed on a side of the liquid crystal coating 720 close to the light emitting device layer 400, or the liquid crystal coating 720 may be disposed on a side of the alignment coating 710 away from the light emitting device layer 400, and the alignment coating 710 is in direct contact with the liquid crystal coating 720, or the surface of the alignment coating 710 with the alignment groove is in direct contact with the liquid crystal coating 720. Specifically, the liquid crystal coating 720 may be directly disposed on the side of the alignment coating 710 away from the light emitting device layer 400 by coating or other methods. The alignment coating 710 can make the liquid crystal molecules in the liquid crystal coating 720 have a suitable pre-tilt angle, thereby realizing the optical characteristics of a quarter wave plate.
在本实施例中，左旋（或右旋）圆偏光继续向显示面板内部入射至金属层600上时，金属层600将左旋（或右旋）圆偏光转变成右旋（或左旋）圆偏光并反射回液晶涂层720，右旋（或左旋）圆偏光再次经过液晶涂层720后转变成垂直（或水平）线偏振光，此时，垂直（或水平）线偏振光的偏振方向与线偏光层730的透光轴垂直，因此无法透过线偏光层730，从而实现对外界环境光的吸收。In this embodiment, when the left-handed (or right-handed) circularly polarized light continues to be incident on the metal layer 600 toward the inside of the display panel, the metal layer 600 converts the left-handed (or right-handed) circularly polarized light into right-handed (or left-handed) circularly polarized light and reflects it back to the liquid crystal coating 720. The right-handed (or left-handed) circularly polarized light is converted into vertical (or horizontal) linear polarized light after passing through the liquid crystal coating 720 again. At this time, the polarization direction of the vertical (or horizontal) linear polarized light is perpendicular to the light transmission axis of the linear polarizing layer 730, so it cannot pass through the linear polarizing layer 730, thereby achieving absorption of external ambient light.
请参阅图3和图4，在本申请的显示面板中，显示面板还可以包括折射膜层800，折射膜层800可以包括第一折射层810和设置在第一折射层上的第二折射层820，第一折射层810的折射率小于第二折射层820的折射率。Please refer to Figures 3 and 4. In the display panel of the present application, the display panel may further include a refractive film layer 800. The refractive film layer 800 may include a first refractive layer 810 and a second refractive layer 820 disposed on the first refractive layer. The refractive index of the first refractive layer 810 is less than the refractive index of the second refractive layer 820.
在本实施例中，第一折射层810可以由封装层510复用而来，第二折射层820可以由配向涂层710复用而来。此时，功能层500为封装层510。具体地，封装层510设置在发光器件层400的出光侧，偏光过滤层700设置于封装层510远离发光器件层400的一侧，触控层520设置于偏光过滤层700远离封装层510的一侧。此时，封装层510与偏光过滤层700的配向涂层710直接接触。In this embodiment, the first refractive layer 810 can be reused from the encapsulation layer 510, and the second refractive layer 820 can be reused from the alignment coating 710. In this case, the functional layer 500 is the encapsulation layer 510. Specifically, the encapsulation layer 510 is arranged on the light-emitting side of the light-emitting device layer 400, the polarizing filter layer 700 is arranged on the side of the encapsulation layer 510 away from the light-emitting device layer 400, and the touch layer 520 is arranged on the side of the polarizing filter layer 700 away from the encapsulation layer 510. In this case, the encapsulation layer 510 is in direct contact with the alignment coating 710 of the polarizing filter layer 700.
在本实施例中，配向涂层710为无机材料层例如SiN x、SiO x涂层等，且配向涂层710靠近液晶涂层720的表面经过蚀刻、蒸镀、溅射等工艺处理形成有配向沟槽。 In this embodiment, the alignment coating 710 is an inorganic material layer such as SiNx , SiOx coating, etc., and the surface of the alignment coating 710 close to the liquid crystal coating 720 is processed by etching, evaporation, sputtering, etc. to form alignment grooves.
在本实施例中，第一折射层810的折射率可以是1.4-1.5，第二折射层820的折射率可以是1.6-1.7，第二折射层820与第一折射层810的折射率的差值范围为0.1-0.2，以使发光器件的出射光可以通过折射层520实现聚光效果，提高显示面板的正视出光亮度。In this embodiment, the refractive index of the first refractive layer 810 can be 1.4-1.5, the refractive index of the second refractive layer 820 can be 1.6-1.7, and the difference in refractive index between the second refractive layer 820 and the first refractive layer 810 is in the range of 0.1-0.2, so that the emitted light of the light-emitting device can achieve a focusing effect through the refractive layer 520, thereby improving the front view light brightness of the display panel.
请参阅图4，在本申请的显示面板中，为了进一步提高显示面板的正视出光亮度，第一折射层810与第二折射层820的交界面上还可以设置有聚光结构。Please refer to FIG. 4 . In the display panel of the present application, in order to further improve the brightness of the light emitted from the display panel when viewed from the front, a light-collecting structure may be provided on the interface between the first refractive layer 810 and the second refractive layer 820 .
具体地，第一折射层810在远离发光器件层400一侧的侧面上可以设置有至少一凹槽830，第二折射层820在靠近第一折射层810的一侧可以形成有位于凹槽830内的凸起部840，凹槽830与凸起部840配合形成聚光结构。凸起部840在显示面板内形成微透镜结构，将来自发光器件层400的出射光进行汇聚，从而有效提高显示面板的正视出光亮度。Specifically, the first refractive layer 810 may be provided with at least one groove 830 on the side away from the light emitting device layer 400, and the second refractive layer 820 may be formed with a protrusion 840 located in the groove 830 on the side close to the first refractive layer 810, and the groove 830 and the protrusion 840 cooperate to form a light-collecting structure. The protrusion 840 forms a microlens structure in the display panel to collect the emitted light from the light emitting device layer 400, thereby effectively improving the front view light brightness of the display panel.
在本实施例中，凹槽830的表面可以是光滑的球面，且球面的球心可以位于第二折射层820内。此时，凸起部840的形状与凹槽830的凹陷空间形状相适配，即凸起部840构成向第一折射层810内凸起的半球状微透镜。半球状微透镜可以将发光器件层400出射的各个方向的光进行折射和反射，使出射光沿垂直于显示面板的方向进行出射，从而提高显示面板的正视出光亮度，改善正视显示效果。In this embodiment, the surface of the groove 830 may be a smooth spherical surface, and the center of the spherical surface may be located in the second refractive layer 820. At this time, the shape of the protrusion 840 is adapted to the shape of the concave space of the groove 830, that is, the protrusion 840 constitutes a hemispherical microlens protruding into the first refractive layer 810. The hemispherical microlens can refract and reflect light emitted from the light emitting device layer 400 in various directions, so that the emitted light is emitted in a direction perpendicular to the display panel, thereby increasing the front view light output brightness of the display panel and improving the front view display effect.
请参阅图4，在本申请的显示面板中，发光器件层400可以包括颜色不同的多个发光器件，例如，发光器件层400可以包括多个第一发光器件401、多个第二发光器件402和多个第三发光器件403，第一发光器件401可以是红色发光器件，第二发光器件402可以是绿色发光器件，第三发光器件403可以是蓝色发光器件。与第一发光器件401、第二发光器件402、第三发光器件403对应地，多个凹槽830可以包括与第一发光器件401对应的第一凹槽831、与第二发光器件402对应的第二凹槽832和与第三发光器件403对应的第三凹槽833。Referring to FIG. 4 , in the display panel of the present application, the light emitting device layer 400 may include a plurality of light emitting devices of different colors. For example, the light emitting device layer 400 may include a plurality of first light emitting devices 401, a plurality of second light emitting devices 402, and a plurality of third light emitting devices 403. The first light emitting device 401 may be a red light emitting device, the second light emitting device 402 may be a green light emitting device, and the third light emitting device 403 may be a blue light emitting device. Corresponding to the first light emitting device 401, the second light emitting device 402, and the third light emitting device 403, the plurality of grooves 830 may include a first groove 831 corresponding to the first light emitting device 401, a second groove 832 corresponding to the second light emitting device 402, and a third groove 833 corresponding to the third light emitting device 403.
在本实施例中，发光器件在折射膜层800上的正投影可以位于凹槽830内，具体地，第一发光器件401在折射膜层800上的正投影可以位于第一凹槽831内，第二发光器件402在折射膜层800上的正投影可以位于第二凹槽832内，第三发光器件403在折射膜层800上的正投影可以位于第三凹槽833内。本实施例通过将发光器件的在折射膜层800上的正投影设置为在凹槽830内，使凹槽830可以与发光器件正对，从而使凹槽830内的凸起部840更好地对发光器件的出射光进行折射与反射，进一步提高发光器件的正视出光率，改善正视显示效果。In this embodiment, the orthographic projection of the light emitting device on the refractive film layer 800 may be located in the groove 830. Specifically, the orthographic projection of the first light emitting device 401 on the refractive film layer 800 may be located in the first groove 831, the orthographic projection of the second light emitting device 402 on the refractive film layer 800 may be located in the second groove 832, and the orthographic projection of the third light emitting device 403 on the refractive film layer 800 may be located in the third groove 833. In this embodiment, by setting the orthographic projection of the light emitting device on the refractive film layer 800 to be in the groove 830, the groove 830 may be directly opposite to the light emitting device, so that the protrusion 840 in the groove 830 can better refract and reflect the emitted light of the light emitting device, further improving the front view light output rate of the light emitting device and improving the front view display effect.
请参阅图4，在本申请的显示面板中，在显示面板的俯视方向上，不同颜色的发光器件对应的凹槽830的面积可以不同。具体地，第一发光器件401对应的第一凹槽831的面积大于第二发光器件402对应的第二凹槽832的面积，以及第一发光器件401对应的第一凹槽831的面积小于第三发光器件403对应的第三凹槽833的面积。换言之，在显示面板的俯视方向上，第二发光器件402、第一发光器件401、第三发光器件403对应的凹槽830的面积逐渐增大。Please refer to FIG. 4 . In the display panel of the present application, in the top view direction of the display panel, the areas of the grooves 830 corresponding to the light emitting devices of different colors may be different. Specifically, the area of the first groove 831 corresponding to the first light emitting device 401 is larger than the area of the second groove 832 corresponding to the second light emitting device 402, and the area of the first groove 831 corresponding to the first light emitting device 401 is smaller than the area of the third groove 833 corresponding to the third light emitting device 403. In other words, in the top view direction of the display panel, the areas of the grooves 830 corresponding to the second light emitting device 402, the first light emitting device 401, and the third light emitting device 403 gradually increase.
在本实施例中，与凹槽830对应地，第二凹槽832、第一凹槽831、第三凹槽833的凸起部840的体积逐渐增大。可以理解的是，凸起部840在显示面板的俯视方向上的面积越大，或者凹槽830内的凸起部840的体积越大，凸起部840对光的聚集效果越好。因此，第三凹槽833内凸起部840可以对发光效率更低的第三发光器件403（即蓝色发光器件）的出射光起到更好的光汇聚效果，提高显示面板的蓝光出光率。In this embodiment, corresponding to the groove 830, the volume of the protrusion 840 of the second groove 832, the first groove 831, and the third groove 833 gradually increases. It can be understood that the larger the area of the protrusion 840 in the top view direction of the display panel, or the larger the volume of the protrusion 840 in the groove 830, the better the light gathering effect of the protrusion 840. Therefore, the protrusion 840 in the third groove 833 can have a better light gathering effect on the output light of the third light-emitting device 403 (i.e., the blue light-emitting device) with lower light-emitting efficiency, thereby improving the blue light output rate of the display panel.
本申请实施例通过在发光器件层400的一侧设置金属层600，并在位于发光器件层400出光侧的功能层500上或功能层500内设置偏光过滤层700，使来自外界的环境光先经过偏光过滤层700进入显示面板内部，然后被金属层600反射回偏光过滤层700并被吸收，从而消除或较大程度减轻显示面板对外界环境光的反射作用，改善显示面板的暗态显示；而且，由于本申请将偏光过滤层700靠近衬底100一侧的表面设置为与功能层500直接接触，使偏光过滤层700可以直接通过涂布等工艺成为显示面板内部的膜层，从而使偏光过滤层700的相位延迟参数可以根据每一显示面板的需求进行设置，与显示面板达到良好的匹配度，更好地改善暗态显示效果。In the embodiment of the present application, a metal layer 600 is arranged on one side of the light-emitting device layer 400, and a polarizing filter layer 700 is arranged on the functional layer 500 located on the light-emitting side of the light-emitting device layer 400 or in the functional layer 500, so that ambient light from the outside first passes through the polarizing filter layer 700 to enter the inside of the display panel, and then is reflected back to the polarizing filter layer 700 by the metal layer 600 and absorbed, thereby eliminating or greatly reducing the reflection effect of the display panel on the external ambient light, and improving the dark state display of the display panel; moreover, since the surface of the polarizing filter layer 700 close to the substrate 100 is arranged in direct contact with the functional layer 500 in the present application, the polarizing filter layer 700 can be directly formed into a film layer inside the display panel through processes such as coating, so that the phase delay parameter of the polarizing filter layer 700 can be set according to the requirements of each display panel, so as to achieve a good match with the display panel and better improve the dark state display effect.
请参阅图5至图12，本申请实施例还提供一种显示面板的制作方法，用于制作上述实施例中的显示面板。Please refer to FIG. 5 to FIG. 12 , the embodiment of the present application further provides a method for manufacturing a display panel, which is used to manufacture the display panel in the above embodiment.
请参阅图5，显示面板的制作方法可以包括：Referring to FIG. 5 , a method for manufacturing a display panel may include:
S100、提供一衬底100，如图6所示；S100, providing a substrate 100, as shown in FIG6;
S200、在衬底100上形成发光器件层400，如图7和图8所示；S200, forming a light emitting device layer 400 on the substrate 100, as shown in FIGS. 7 and 8;
S300、在发光器件层400的出光侧形成功能层500，功能层500为封装层510或触控层520，如图9所示；S300, forming a functional layer 500 on the light-emitting side of the light-emitting device layer 400, the functional layer 500 being an encapsulation layer 510 or a touch layer 520, as shown in FIG9;
S400、在发光器件层400的出光侧形成偏光过滤层700，偏光过滤层700包括通过涂布/喷涂/沉积工艺形成的液晶涂层720，偏光过滤层700靠近衬底100的一侧与功能层500直接接触，如图10和图11所示；S400, forming a polarizing filter layer 700 on the light-emitting side of the light-emitting device layer 400, wherein the polarizing filter layer 700 includes a liquid crystal coating layer 720 formed by a coating/spraying/deposition process, and a side of the polarizing filter layer 700 close to the substrate 100 is in direct contact with the functional layer 500, as shown in FIGS. 10 and 11;
S500、在偏光过滤层700上形成透明盖板900，如图12所示。S500 , forming a transparent cover plate 900 on the polarizing filter layer 700 , as shown in FIG. 12 .
本实施例通过以上步骤制作显示面板，使偏光过滤层700可以作为显示面板的内部膜层进行制作，每一显示面板都可以根据其显示需求设置具有不同光学参数的偏光过滤层700，从而实现更好的适配，进一步改善显示面板的暗态显示效果。而且，由于偏光过滤层700可以随着显示面板一体制作，其成本小于外购偏光片并与显示面板进行贴合的成本，有利于实现效益更大化。In this embodiment, the display panel is manufactured through the above steps, so that the polarizing filter layer 700 can be manufactured as the internal film layer of the display panel, and each display panel can be provided with a polarizing filter layer 700 with different optical parameters according to its display requirements, so as to achieve better adaptation and further improve the dark state display effect of the display panel. Moreover, since the polarizing filter layer 700 can be manufactured integrally with the display panel, its cost is less than the cost of purchasing a polarizer and bonding it to the display panel, which is conducive to maximizing the benefits.
在本申请的显示面板的制作方法中，请参阅图2和图7，当显示面板为OLED显示面板时，可以在形成发光器件层400时，同时形成金属层600，此时，金属层600可以是发光器件层400内的阴极层430复用而来。In the manufacturing method of the display panel of the present application, please refer to Figures 2 and 7. When the display panel is an OLED display panel, the metal layer 600 can be formed simultaneously when the light-emitting device layer 400 is formed. At this time, the metal layer 600 can be reused from the cathode layer 430 in the light-emitting device layer 400.
在本实施例中，S200步骤中，在形成发光器件层400之前，需先在衬底100上形成阵列驱动层300，再将发光器件层400形成在阵列驱动层300上。In this embodiment, in step S200 , before forming the light emitting device layer 400 , the array driving layer 300 needs to be formed on the substrate 100 , and then the light emitting device layer 400 is formed on the array driving layer 300 .
在本申请的显示面板的制作方法中，S400步骤可以包括：In the method for manufacturing a display panel of the present application, step S400 may include:
S410、在功能层500上形成配向材料，并对配向材料进行烘烤、紫外线照射固化形成配向涂层710。S410 , forming an alignment material on the functional layer 500 , and baking and curing the alignment material by ultraviolet irradiation to form an alignment coating 710 .
在本实施例中，配向材料可以通过涂布、浸没蘸取等方式形成在功能层500上。In this embodiment, the alignment material can be formed on the functional layer 500 by coating, immersion dipping, etc.
S420、在配向涂层710上涂布液晶材料，并对液晶材料进行烘烤、紫外线照射固化成膜，以形成液晶涂层720。S420 , coating the liquid crystal material on the alignment coating 710 , and baking and curing the liquid crystal material by ultraviolet irradiation to form a film, so as to form a liquid crystal coating 720 .
S430、在液晶涂层720上涂布偏光材料或贴合偏光片以形成线偏光层730，配向涂层710、液晶涂层720与线偏光层730构成偏光过滤层700。S430 , coating a polarizing material or attaching a polarizer to the liquid crystal coating 720 to form a linear polarizing layer 730 . The alignment coating 710 , the liquid crystal coating 720 and the linear polarizing layer 730 constitute a polarizing filter layer 700 .
本申请实施例还提供一种显示终端，显示终端可以包括上述实施例的显示面板，或者采用由上述实施例中的显示面板的制作方法制作得到的显示面板。显示终端可以包括手机、电视机、笔记本电脑等电子设备。The present application also provides a display terminal, which may include the display panel of the above embodiment, or a display panel manufactured by the manufacturing method of the display panel of the above embodiment. The display terminal may include electronic devices such as mobile phones, televisions, and laptops.
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present application, and all these changes or substitutions should fall within the protection scope of the claims attached to the present application.

Claims (20)

  1. 一种显示面板，其包括：A display panel, comprising:
    衬底；substrate;
    发光器件层，设置于所述衬底上；A light emitting device layer is disposed on the substrate;
    偏光过滤层，设置于所述发光器件层的出光侧，所述偏光过滤层包括液晶涂层；以及a polarizing filter layer, disposed on the light-emitting side of the light-emitting device layer, wherein the polarizing filter layer comprises a liquid crystal coating; and
    功能层，设置于所述偏光过滤层靠近所述衬底的一侧，且所述偏光过滤层靠近所述衬底一侧的表面与所述功能层直接接触，所述功能层为封装层或触控层。The functional layer is arranged on a side of the polarizing filter layer close to the substrate, and a surface of the polarizing filter layer close to the substrate is in direct contact with the functional layer, and the functional layer is an encapsulation layer or a touch layer.
  2. 根据权利要求1所述的显示面板，其中，所述偏光过滤层还包括线偏光层，所述线偏光层位于所述液晶涂层远离所述发光器件层的一侧；The display panel according to claim 1, wherein the polarizing filter layer further comprises a linear polarizing layer, and the linear polarizing layer is located on a side of the liquid crystal coating layer away from the light emitting device layer;
    其中，线偏振光经过所述液晶涂层转变成圆偏振光。The linearly polarized light is converted into circularly polarized light by passing through the liquid crystal coating.
  3. 根据权利要求2所述的显示面板，其中，所述偏光过滤层还包括位于所述液晶涂层靠近所述发光器件层一侧的配向涂层；The display panel according to claim 2, wherein the polarizing filter layer further comprises an alignment coating located on a side of the liquid crystal coating close to the light emitting device layer;
    其中，所述配向涂层与所述液晶涂层直接接触。Wherein, the alignment coating is in direct contact with the liquid crystal coating.
  4. 根据权利要求3所述的显示面板，其中，所述功能层为封装层，所述封装层设置于所述发光器件层的出光侧，所述偏光过滤层靠近所述衬底一侧的表面与所述封装层直接接触；The display panel according to claim 3, wherein the functional layer is an encapsulation layer, the encapsulation layer is arranged on the light-emitting side of the light-emitting device layer, and the surface of the polarizing filter layer close to the substrate is in direct contact with the encapsulation layer;
    其中，所述显示面板还包括所述触控层，所述触控层设置于所述偏光过滤层远离所述封装层的一侧。Wherein, the display panel further comprises the touch layer, and the touch layer is arranged on a side of the polarizing filter layer away from the encapsulation layer.
  5. 根据权利要求4所述的显示面板，其中，所述显示面板还包括折射膜层，所述折射膜层包括第一折射层和设置在所述第一折射层上的第二折射层，所述第一折射层的折射率小于所述第二折射层的折射率；The display panel according to claim 4, wherein the display panel further comprises a refractive film layer, the refractive film layer comprising a first refractive layer and a second refractive layer disposed on the first refractive layer, and a refractive index of the first refractive layer is smaller than a refractive index of the second refractive layer;
    其中，所述封装层复用为所述第一折射层，所述配向涂层复用为所述第二折射层。Wherein, the encapsulation layer is reused as the first refractive layer, and the alignment coating is reused as the second refractive layer.
  6. 根据权利要求5所述的显示面板，其中，所述第一折射层远离所述发光器件层一侧的侧面设置有至少一凹槽，所述第二折射层在所述凹槽内形成有凸起部。The display panel according to claim 5, wherein at least one groove is provided on a side of the first refractive layer away from the light-emitting device layer, and a protrusion is formed in the groove of the second refractive layer.
  7. 根据权利要求6所述的显示面板，其中，所述发光器件层包括不同颜色的多个发光器件，所述发光器件在所述折射膜层上的正投影位于所述凹槽内。The display panel according to claim 6, wherein the light-emitting device layer comprises a plurality of light-emitting devices of different colors, and the orthographic projections of the light-emitting devices on the refractive film layer are located within the groove.
  8. 根据权利要求7所述的显示面板，其中，所述发光器件层包括颜色不同的第一发光器件、第二发光器件和第三发光器件，所述凹槽包括与所述第一发光器件对应的第一凹槽、与所述第二发光器件对应的第二凹槽以及与所述第三发光器件对应的第三凹槽；The display panel according to claim 7, wherein the light-emitting device layer comprises a first light-emitting device, a second light-emitting device and a third light-emitting device of different colors, and the groove comprises a first groove corresponding to the first light-emitting device, a second groove corresponding to the second light-emitting device and a third groove corresponding to the third light-emitting device;
    在所述显示面板的俯视方向上，所述第一凹槽的面积大于所述第二凹槽的面积，以及所述第一凹槽的面积小于所述第三凹槽的面积。In a top-view direction of the display panel, an area of the first groove is larger than an area of the second groove, and an area of the first groove is smaller than an area of the third groove.
  9. 根据权利要求3所述的显示面板，其中，所述功能层为触控层，所述偏光过滤层靠近所述衬底一侧的表面与所述触控层直接接触；The display panel according to claim 3, wherein the functional layer is a touch layer, and a surface of the polarizing filter layer close to the substrate is in direct contact with the touch layer;
    其中，所述显示面板还包括封装层，所述封装层设置于所述发光器件层的出光侧，所述触控层设置于所述封装层远离所述发光器件层的一侧。The display panel further comprises an encapsulation layer, the encapsulation layer is arranged on the light emitting side of the light emitting device layer, and the touch control layer is arranged on a side of the encapsulation layer away from the light emitting device layer.
  10. 根据权利要求2所述的显示面板，其中，所述液晶涂层的厚度满足：△n*d=1/4λ，其中，△n为所述液晶涂层对寻常光的折射率与对非常光的折射率的差值，d为所述液晶涂层的厚度，λ为可见光的波长。The display panel according to claim 2, wherein the thickness of the liquid crystal coating satisfies: Δn*d=1/4λ, wherein Δn is the difference between the refractive index of the liquid crystal coating for ordinary light and the refractive index of the liquid crystal coating for extraordinary light, d is the thickness of the liquid crystal coating, and λ is the wavelength of visible light.
  11. 一种显示面板的制作方法，用于制作如权利要求1所述的显示面板，其包括：A method for manufacturing a display panel, for manufacturing the display panel as claimed in claim 1, comprising:
    提供一衬底；providing a substrate;
    在所述衬底上形成发光器件层；forming a light emitting device layer on the substrate;
    在所述发光器件层的出光侧形成功能层，所述功能层为封装层或触控层；Forming a functional layer on the light-emitting side of the light-emitting device layer, wherein the functional layer is an encapsulation layer or a touch layer;
    在所述发光器件层的出光侧形成偏光过滤层，所述偏光过滤层包括通过涂布/喷涂/沉积工艺形成的液晶涂层，所述偏光过滤层靠近所述衬底的一侧与所述功能层直接接触。A polarizing filter layer is formed on the light-emitting side of the light-emitting device layer, wherein the polarizing filter layer comprises a liquid crystal coating formed by a coating/spraying/deposition process, and a side of the polarizing filter layer close to the substrate is in direct contact with the functional layer.
  12. 根据权利要求11所述的显示面板的制作方法，其中，所述在所述发光器件层的出光侧形成偏光过滤层的步骤包括：According to the method for manufacturing a display panel according to claim 11, wherein the step of forming a polarizing filter layer on the light-emitting side of the light-emitting device layer comprises:
    在所述功能层上形成配向材料，并对所述配向材料进行烘烤、紫外线照射固化形成配向涂层；forming an alignment material on the functional layer, and baking and curing the alignment material by ultraviolet irradiation to form an alignment coating;
    在所述配向涂层上涂布液晶材料，并对所述液晶材料进行烘烤、紫外线照射固化成膜，以形成液晶涂层；Applying a liquid crystal material on the alignment coating, and baking and curing the liquid crystal material by ultraviolet irradiation to form a film, so as to form a liquid crystal coating;
    在所述液晶涂层上涂布偏光材料或贴合偏光片以形成线偏光层，所述配向涂层、所述液晶涂层与所述线偏光层构成所述偏光过滤层。A polarizing material is coated on the liquid crystal coating or a polarizing film is attached to form a linear polarizing layer. The alignment coating, the liquid crystal coating and the linear polarizing layer constitute the polarizing filter layer.
  13. 一种显示终端，其包括显示面板；其中，所述显示面板包括：A display terminal includes a display panel; wherein the display panel includes:
    衬底；substrate;
    发光器件层，设置于所述衬底上；A light emitting device layer is disposed on the substrate;
    偏光过滤层，设置于所述发光器件层的出光侧，所述偏光过滤层包括液晶涂层；以及a polarizing filter layer, disposed on the light-emitting side of the light-emitting device layer, wherein the polarizing filter layer comprises a liquid crystal coating; and
    功能层，设置于所述偏光过滤层靠近所述衬底的一侧，且所述偏光过滤层靠近所述衬底一侧的表面与所述功能层直接接触，所述功能层为封装层；A functional layer is arranged on a side of the polarizing filter layer close to the substrate, and a surface of the polarizing filter layer close to the substrate is in direct contact with the functional layer, and the functional layer is an encapsulation layer;
    触控层，设置于所述发光器件层靠近所述衬底的一侧。The touch control layer is arranged on a side of the light emitting device layer close to the substrate.
  14. 根据权利要求13所述的显示终端，其中，所述偏光过滤层还包括线偏光层，所述线偏光层位于所述液晶涂层远离所述发光器件层的一侧；The display terminal according to claim 13, wherein the polarizing filter layer further comprises a linear polarizing layer, and the linear polarizing layer is located on a side of the liquid crystal coating layer away from the light emitting device layer;
    其中，线偏振光经过所述液晶涂层转变成圆偏振光。Wherein, the linearly polarized light is converted into circularly polarized light by passing through the liquid crystal coating.
  15. 根据权利要求14所述的显示终端，其中，所述偏光过滤层还包括位于所述液晶涂层靠近所述发光器件层一侧的配向涂层；The display terminal according to claim 14, wherein the polarizing filter layer further comprises an alignment coating located on a side of the liquid crystal coating close to the light emitting device layer;
    其中，所述配向涂层与所述液晶涂层直接接触。Wherein, the alignment coating is in direct contact with the liquid crystal coating.
  16. 根据权利要求15所述的显示终端，其中，所述显示面板还包括折射膜层，所述折射膜层包括第一折射层和设置在所述第一折射层上的第二折射层，所述第一折射层的折射率小于所述第二折射层的折射率；The display terminal according to claim 15, wherein the display panel further comprises a refractive film layer, the refractive film layer comprises a first refractive layer and a second refractive layer disposed on the first refractive layer, and a refractive index of the first refractive layer is smaller than a refractive index of the second refractive layer;
    其中，所述封装层复用为所述第一折射层，所述配向涂层复用为所述第二折射层。Wherein, the encapsulation layer is reused as the first refractive layer, and the alignment coating is reused as the second refractive layer.
  17. 根据权利要求16所述的显示终端，其中，所述第一折射层远离所述发光器件层一侧的侧面设置有至少一凹槽，所述第二折射层在所述凹槽内形成有凸起部。The display terminal according to claim 16, wherein at least one groove is provided on a side of the first refractive layer away from the light-emitting device layer, and a protrusion is formed in the groove of the second refractive layer.
  18. 根据权利要求17所述的显示终端，其中，所述发光器件层包括不同颜色的多个发光器件，所述发光器件在所述折射膜层上的正投影位于所述凹槽内。The display terminal according to claim 17, wherein the light-emitting device layer comprises a plurality of light-emitting devices of different colors, and the orthographic projections of the light-emitting devices on the refractive film layer are located within the groove.
  19. 根据权利要求18所述的显示终端，其中，所述发光器件层包括颜色不同的第一发光器件、第二发光器件和第三发光器件，所述凹槽包括与所述第一发光器件对应的第一凹槽、与所述第二发光器件对应的第二凹槽以及与所述第三发光器件对应的第三凹槽；The display terminal according to claim 18, wherein the light-emitting device layer comprises a first light-emitting device, a second light-emitting device and a third light-emitting device of different colors, and the groove comprises a first groove corresponding to the first light-emitting device, a second groove corresponding to the second light-emitting device and a third groove corresponding to the third light-emitting device;
    其中，在所述显示面板的俯视方向上，所述第一凹槽的面积大于所述第二凹槽的面积，以及所述第一凹槽的面积小于所述第三凹槽的面积。Wherein, in a top-view direction of the display panel, an area of the first groove is larger than an area of the second groove, and an area of the first groove is smaller than an area of the third groove.
  20. 根据权利要求14所述的显示终端，其中，所述液晶涂层的厚度满足：△n*d=1/4λ，其中，△n为所述液晶涂层对寻常光的折射率与对非常光的折射率的差值，d为所述液晶涂层的厚度，λ为可见光的波长。The display terminal according to claim 14, wherein the thickness of the liquid crystal coating satisfies: Δn*d=1/4λ, wherein Δn is the difference between the refractive index of the liquid crystal coating for ordinary light and the refractive index of the liquid crystal coating for extraordinary light, d is the thickness of the liquid crystal coating, and λ is the wavelength of visible light.
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