WO2023279462A1 - 显示面板及显示装置 - Google Patents

显示面板及显示装置 Download PDF

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Publication number
WO2023279462A1
WO2023279462A1 PCT/CN2021/110460 CN2021110460W WO2023279462A1 WO 2023279462 A1 WO2023279462 A1 WO 2023279462A1 CN 2021110460 W CN2021110460 W CN 2021110460W WO 2023279462 A1 WO2023279462 A1 WO 2023279462A1
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WO
WIPO (PCT)
Prior art keywords
cathode
light
suppression
display area
transmitting
Prior art date
Application number
PCT/CN2021/110460
Other languages
English (en)
French (fr)
Inventor
吕磊
金蒙
袁涛
黄金昌
Original Assignee
武汉华星光电半导体显示技术有限公司
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Filing date
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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
Priority to US17/600,325 priority Critical patent/US20240049511A1/en
Publication of WO2023279462A1 publication Critical patent/WO2023279462A1/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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • 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
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H10K50/822—Cathodes characterised by their shape
    • 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
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H10K50/828—Transparent cathodes, e.g. comprising thin metal 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
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • 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
    • 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
    • H10K59/1201—Manufacture or treatment
    • 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
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • 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
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes
    • H10K59/80521—Cathodes characterised by their shape
    • 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

Definitions

  • the present application relates to the field of display technology, in particular to a display panel and a display device.
  • optical elements are placed under the display.
  • the cathode is arranged on the entire surface, and the light loss when passing through the polarizer and the cathode is relatively large, so that the optical element can only receive optical signals with loss, which affects the working quality of the optical element.
  • Embodiments of the present application provide a display panel and a display device to improve the problem that light is greatly lost when passing through polarizers and cathodes, which affects the working quality of optical elements.
  • the present application provides a display panel, the display panel includes a first display area and a second display area located on the periphery of the first display area, the light transmittance of the first display area is greater than that of the second display area
  • the first display area includes an adjacent first light transmission area and a first light emitting area.
  • the display panel includes: a substrate, a cathode suppression layer, a cathode and a polarizer.
  • the cathode suppression layer is disposed on the substrate, and the cathode suppression layer includes a first cathode suppression part located in the first light-transmitting region.
  • the cathode is located in the first light-emitting region and the first light-transmitting region and covers at least part of the first cathode suppression portion.
  • the polarizer is located on the cathode, the polarizer includes a first light-transmitting part located in the first light-transmitting region, and the first light-transmitting part is located above the first cathode suppression part.
  • the orthographic projection of the first light-transmitting portion on the substrate is located within the boundary of the orthographic projection of the first cathode suppression portion on the substrate.
  • the present application also provides a method for preparing a display panel, the display panel includes a first display area and a second display area located on the periphery of the first display area, the first display area includes adjacent first light-transmitting region and the first light-emitting region, the preparation method of the display panel includes:
  • Step S10 providing a substrate, and preparing a cathode suppression layer on the substrate; wherein, the cathode suppression layer includes a first cathode suppression part located in the first light-transmitting region;
  • Step S20 preparing a cathode on the substrate and the cathode suppression layer; wherein, the cathode is located in the first light-emitting region and the first light-transmitting region and covers at least part of the first cathode suppression portion ;
  • Step S30 Prepare a polarizer on the cathode and the cathode suppression layer; wherein, the polarizer includes a first light-transmitting portion located in the first light-transmitting region, and the first light-transmitting portion is located in the first light-transmitting region Above the first cathode suppression part, the orthographic projection of the first light-transmitting part on the substrate is located within the boundary of the orthographic projection of the first cathode suppression part on the substrate.
  • the present application also provides a display device, including any one of the above-mentioned display panels or a display panel prepared by the above-mentioned method for preparing a display panel.
  • the cathode is located in the first light-emitting region and the first light-transmitting region and covers at least part of the first cathode suppression part, and the cathode suppression layer
  • the light transmittance is greater than the light transmittance of the cathode, which can reduce the influence of the cathode on the light transmittance of the first light transmission region.
  • the light transmittance of the first light-transmitting area is greater than the light transmittance of the first light-emitting area and the second display area, thereby further improving the second light-emitting area.
  • the light transmittance of the first display area is beneficial to reduce the light loss caused by the polarizer and the cathode when the light passes through the first light transmission area, thereby improving the working quality of the optical element.
  • FIG. 1A to 1B are schematic structural views of a display panel provided by an embodiment of the present application.
  • FIGS. 2A to 2D are structural schematic diagrams of the first cathode suppression part and the first light-transmitting part provided by the embodiment of the present application;
  • Fig. 3 is a schematic structural diagram of the first cathode suppression part and the second cathode suppression part provided by the embodiment of the present application;
  • FIGS. 4A to 4C are structural schematic diagrams of the second cathode suppression part and the second light-transmitting part provided by the embodiment of the present application;
  • Fig. 5 is a flow chart of the preparation of the display panel provided by the embodiment of the present application.
  • FIG. 1A to FIG. 1B are schematic structural diagrams of the display panel provided by the embodiment of the present application.
  • the embodiment of the present application provides a display panel, and the display panel includes a first display area 100a and a second display area 100b.
  • the second display area 100b is located on the periphery of the first display area 100a, and the first display area 100a includes a first light-transmitting area 1001a and a first light-emitting area 1001b.
  • the second display area 100b is the main display area of the display panel for displaying images.
  • the first display area 100a can be used to display images, so as to cooperate with the second display area 100b to make the display panel realize the effect of full-screen display; the first display area 100a can also be used for sensing, to The sensing function of the display panel is realized by cooperating with optical elements such as a camera, an optical touch component, and a fingerprint recognition sensor, so as to improve user experience.
  • the first light-transmitting area 1001a is used to transmit light to cooperate with optical elements to realize the sensing function of the display panel; the first light-emitting area 1001b is used to realize the sensing function of the first display area 100a. Display function.
  • the light transmittance of the first display area 100a can be made greater than the light transmittance of the second display area 100b, which is beneficial to make the display The panel achieves better sensing in the first display area 100a.
  • the first display area 100a may be arranged at any position of the display panel; the display panel may include a plurality of the first display areas 100a.
  • the display panel includes a substrate 101 , a cathode suppression layer 102 , a cathode 103 and a polarizer 104 .
  • the substrate 101 includes a flexible substrate or a rigid substrate. Further, the preparation material of the flexible substrate includes organic materials such as polyimide; the preparation material of the rigid substrate includes glass, metal, plastic and the like. Optionally, unshown parts such as a buffer layer may also be prepared on the substrate 101 .
  • the cathode suppression layer 102 is disposed on the substrate 101, and the cathode suppression layer 102 includes a first cathode suppression portion 1021 located in the first light-transmitting region 1001a.
  • the preparation material of the cathode suppression layer 102 includes a light-transmitting material.
  • the preparation material of the cathode suppression layer 102 includes BAlq (bis(2-methyl-8-hydroxyquinoline)-4-(p-phenylphenol) aluminum), TAZ (3-(biphenyl-4 -yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole) and at least one of OTI (indium oxide).
  • the cathode 103 is located in the first light-emitting region 1001b and the first light-transmitting region 1001a and covers at least part of the first cathode suppression part 1021, and the light transmittance of the cathode suppression layer 102 is greater than that of the cathode 103
  • the light transmittance, the bonding force between the cathode 103 and the cathode suppression layer 102 is smaller than that of the cathode 103 and the first light-emitting region 1001b located under the cathode 103 and in contact with the cathode 103
  • the binding force between the film layers is provided.
  • the preparation material of the cathode 103 includes metallic magnesium.
  • the polarizer 104 is located on the cathode 103 , and the polarizer 104 includes a first light-transmitting portion 1041 and a polarizing portion 1043 adjacent to the first light-transmitting portion 1041 .
  • the first light-transmitting portion 1041 is located in the first light-transmitting region 1001 a , and the first light-transmitting portion 1041 is located above the first cathode suppression portion 1021 .
  • the orthographic projection of the first light-transmitting portion 1041 on the substrate 101 is located within the boundary of the orthographic projection of the first cathode suppression portion 1021 on the substrate 101 .
  • the orthographic projection of the first light-transmitting portion 1041 on the substrate 101 is located within the boundary of the orthographic projection of the first cathode suppression portion 1021 on the substrate 101, including: the first
  • the case where the boundary of the orthographic projection of the light-transmitting portion 1041 on the substrate 101 is located inside the boundary of the orthographic projection of the first cathode suppression portion 1021 on the substrate 101 also includes the first light-transmitting portion
  • the orthographic projection of 1041 on the substrate 101 coincides with the orthographic projection of the first cathode suppression part 1021 on the substrate 101 .
  • the light transmittance of the cathode suppression layer 102 is greater than the light transmittance of the cathode 103, between the cathode 103 and the first cathode suppression part 1021
  • the binding force is smaller than the binding force between the cathode 103 and the film layer located under the cathode 103 and in contact with the cathode 103 in the first light emitting region 1001b, which can make the cathode suppression layer 102
  • the thickness of the cathode 103 is thinner or there is no cathode 103, thereby reducing the influence of the cathode 103 on the light transmittance of the first light transmission region 1001a.
  • the light transmittance of the first light-transmitting region 1001a is greater than that of the first light-emitting region 1001b and the light transmittance of the second display area 100b can further increase the light transmittance of the first display area 100a, which is beneficial to reduce the light transmittance of the first light transmission area 1001a, the polarizer 104 The loss of light, which in turn improves the working quality of optical components.
  • the orthographic projection area of the first cathode suppression portion 1021 on the substrate 101 is greater than or equal to 0.05 times the area of the first light-transmitting region 1001a, and less than or equal to the area of the first light-transmitting region 0.95 times the area of 1001a to ensure that the first display area 100a can take into account both the display function and the sensing function.
  • the cathode 103 is formed by an entire surface evaporation process.
  • the bonding force between the cathode 103 and the cathode suppression layer 102 is smaller than that between the cathode 103 and the cathode located in the first light emitting region 1001b 103 and the bonding force between the film layers in contact with the cathode 103, therefore, the cathode 103 deposited on the cathode suppression layer 102 is thinner or there is no deposition of the cathode 103 (that is, even if it is located in the
  • the thickness of the cathode 103 on the first cathode suppression part 1021 is smaller than the thickness of the cathode 103 located in the first light-emitting region 1001b), so that the cathode 103 can be improved without changing the manufacturing process.
  • the light transmittance of the first display area 100a is smaller than the thickness of the cathode 103 located in the first light-emitting region 1001b
  • the display panel further includes a first auxiliary layer 1051, the first auxiliary layer 1051 is located under the cathode 103, and the bonding force between the cathode 103 and the cathode suppression layer 102 is smaller than the The bonding force between the cathode 103 and the first auxiliary layer 1051 .
  • the first auxiliary layer 1051 includes an electron transport layer and an electron injection layer that are sequentially stacked in a direction away from the substrate 101, and the preparation material of the first auxiliary layer 1051 includes a transparent material to reduce the The effect of the first auxiliary layer 1051 on the light transmittance of the first display area 100a.
  • the first auxiliary layer 1051 is located under the cathode suppression layer 102 .
  • the first auxiliary layer 1051 may also be provided with a groove or a via hole in the first light-transmitting region 1001a, and the first cathode suppression part 1021 is located in the groove or the via hole, so as to While reducing the influence of the cathode 103 on the light transmittance of the first display area 100a, the thickness and the thickness of the cathode 103 and the first cathode suppression part 1021 in the first light transmission area 1001a are reduced.
  • the thickness of the cathode suppression layer 102 is less than or equal to the thickness of the cathode 103 in the view of the longitudinal section of the display panel.
  • FIG. 2A to FIG. 2D are structural schematic diagrams of the first cathode suppressing part and the first light-transmitting part provided by the embodiment of the present application.
  • the cathode 103 can be covered on the entire surface of the first cathode suppression part 1021, as shown in Figure 2A; or the cathode 103 covers at least part of the first cathode suppression part 1021, as shown in Figure 2B ⁇ 2C.
  • the cathode 103 may not cover the first cathode suppression part 1021, that is, there may be a gap between the cathode 103 and the first cathode suppression part 1021; or, the cathode 103 and the first cathode suppression part 1021 may have a gap;
  • the suppression parts 1021 are connected to reduce the area of the cathode 103 covering the outer surface of the first cathode suppression part 1021, thereby reducing the influence of the cathode 103 on the light transmittance of the first light transmission region 1001a.
  • the cathode 103 will cover at least a part of the outer surface of the first cathode suppression part 1021 , as shown in FIGS. 2B to 2C .
  • the first cathode suppression part 1021 includes a first top surface 1021a, a first bottom surface 1021b opposite to the first top surface 1021a, and a first bottom surface 1021b connected to the first top surface 1021a and The first side surface 1021c between the first bottom surfaces 1021b, the first bottom surface 1021b faces the substrate 101 , and the first top surface 1021a faces the polarizer 104 .
  • the cathode 103 covers at least part of the first side 1021c.
  • the width L1 of the first top surface 1021a is smaller than the width L2 of the first bottom surface 1021b, and the gap between the first side surface 1021c and the first bottom surface 1021b
  • the angle is an acute angle; that is, in a plan view, the orthographic projection of the first top surface 1021a on the first bottom surface 1021b is located within the boundary of the first bottom surface 1021b.
  • the width L3 of the first transparent portion 1041 is greater than or equal to the width L1 of the first top surface 1021a and less than or equal to the width L2 of the first bottom surface 1021b. That is, in a plan view angle, the orthographic projection of the first top surface 1021a on the first bottom surface 1021b is located within the orthographic projection of the first light-transmitting portion 1041 on the first bottom surface 1021b, and the first The orthographic projection of the transparent portion 1041 on the first bottom surface 1021b is located within the boundary of the first bottom surface 1021b.
  • the cathode 103 covers a part of the first side 1021c, so that the first cathode suppression part 1021 has a first boundary with the cathode 103 CB1, the width L3 of the first light-transmitting portion 1041 is greater than or equal to the width L1 of the first top surface 1021a and less than or equal to the width L2 of the first bottom surface 1021b and the cathode 103 covers the first side surface
  • the orthographic projection of the first light-transmitting part 1041 on the first bottom surface 1021b in a top view angle of view Located in the orthographic projection of the first boundary CB1 on the first bottom surface 1021b, so as to ensure that the light is received by the optical element while passing through the first light-transmitting part 1041 and
  • CB1 represents the first boundary
  • CB2 represents the boundary of the first top surface 1021a
  • CB3 represents the first boundary
  • the boundary of a bottom surface 1021b, CB4 represents the boundary of the first light-transmitting portion 1041; the shapes of the first light-transmitting portion 1041 and the first cathode suppression portion 1021 in a plan view are not limited to the rounded rectangle shown in FIG. 2D .
  • the first light-transmitting portion 1041 may have the same width from a side close to the substrate 101 to a side far away from the substrate 101 in view of the longitudinal section of the display panel.
  • the width L3 of the first light-transmitting portion 1041 may be equal to the difference L4a between the width L2 of the first bottom surface 1021b and the width L51 of the cathode 103 covering at least part of the first side surface 1021c, as shown in FIG. 2B.
  • the width of the first light-transmitting portion 1041 gradually increases from a side close to the substrate 101 to a side away from the substrate 101, so
  • the width L31 of the part of the first transparent part 1041 close to the substrate 101 is greater than or equal to the width L1 of the first top surface 1021a, and the part of the first transparent part 1041 far away from the substrate 101
  • the width L32 of the first bottom surface 1021b is less than or equal to the difference L4a between the width L2 of the first bottom surface 1021b and the width L51 of the cathode 103 covering at least part of the first side surface 1021c, as shown in FIG. 2C . That is, as shown in (b) of FIG.
  • the orthographic projection of the part of the first light-transmitting portion 1041 close to the substrate 101 on the first bottom surface 1021b is located at the first bottom surface 1021b.
  • the orthographic projection of the first top surface 1021a on the first bottom surface 1021b is located in the first
  • the orthographic projection of the part close to the substrate 101 of the light-transmitting part 1041 on the first bottom surface 1021b is on the first bottom surface 1021b
  • the orthographic projection on is located within the orthographic projection of the first boundary CB1 on the first bottom surface 1021b.
  • a projection boundary on the bottom surface 1021b, CB42 represents the projection boundary of the part of the first transparent portion 1041 away from the substrate 101 on the first bottom surface 1021b.
  • the width L51 of the outer surface of the first cathode suppression part 1021 covered by the cathode 103 occupies the first bottom surface. 1021b and the width difference Ll1 of the first top surface 1021a is 0.25 times.
  • the difference L11 between the widths of the first bottom surface 1021b and the first top surface 1021a is greater than or equal to 2 microns and less than or equal to 6 microns.
  • the difference L11 between the widths of the first bottom surface 1021b and the first top surface 1021a is equal to 2 microns, 2.5 microns, 3 microns, 4 microns, 5.5 microns or 6 microns.
  • the distance L61 between the first junction CB1 and the boundary CB2 of the first top surface 1021a is greater than or equal to 3 microns and less than or equal to 8 microns.
  • the distance L61 between the first boundary CB1 and the boundary CB2 of the first top surface 1021a is equal to 3 microns, 3.2 microns, 3.5 microns, 4 microns, 5 microns, 6 microns, 7 microns, 7.5 microns or 8 microns. Microns.
  • the display panel further includes a pixel definition layer 106 , an anode 1071 , a light emitting layer 1072 , a driving array layer 108 and an encapsulation layer 109 .
  • the pixel definition layer 106 is located on the substrate 101, the pixel definition layer 106 is provided with a plurality of pixel openings 106a, the light emitting layer 1072 is located in the pixel openings 106a, the anode 1071 is located in the pixel definition
  • the layer 106 is close to the side of the substrate 101 and corresponds to the pixel opening 106a.
  • the anode 1071 , the cathode 103 and the light emitting layer 1072 between the anode 1071 and the cathode 103 form a light emitting device.
  • the display panel further includes a second auxiliary layer 1052, the second auxiliary layer 1052 is located on the anode 1071 and the pixel definition layer 106, the first auxiliary layer 1051 is located on the light emitting layer 1072 and On the second auxiliary layer 1052 , the second auxiliary layer 1052 includes a hole injection layer and a hole transport layer sequentially stacked along a direction away from the substrate 101 , and the hole injection layer covers the anode 1071 .
  • the light emitting device further includes the first auxiliary layer 1051 and the second auxiliary layer 1052 .
  • the driving array layer 108 is located on a side of the substrate 101 close to the pixel definition layer 106, and the driving array layer 108 is used to drive the light emitting device to emit light.
  • the driving array layer 108 includes an active layer 1081 located on the substrate 101, a first insulating layer 1082 covering the active layer 1081, and a second insulating layer 1082 disposed on the first insulating layer 1082.
  • the first metal layer 1083 includes a gate that is positioned opposite to the active layer 1081
  • the second metal layer 1085 includes an electrode portion that is positioned opposite to the gate
  • the third metal layer 1087 includes a source and a drain electrically connected to the active layer 1081 .
  • the encapsulation layer 109 is located on the side of the polarizer 104 close to the cathode 103 , and the encapsulation layer 109 includes an inorganic encapsulation layer, an organic encapsulation layer and an inorganic encapsulation layer stacked together.
  • the thickness h1 of the portion of the encapsulation layer 109 corresponding to the first light-transmitting region 1001a may be greater than or Equal to 6 microns and less than or equal to 10 microns.
  • the thickness h1 of the portion of the encapsulation layer 109 corresponding to the first transparent region 1001 a is equal to 6 microns, 6.5 microns, 7 microns, 8 microns, 9 microns, 9.6 microns or 10 microns.
  • the distance between the first cathode suppression portion 1021 and the adjacent pixel opening 106a is greater than or equal to 2 microns and less than or equal to 10 microns. To avoid that during the preparation process, the preparation material of the cathode suppression layer 102 falls into the pixel opening 106a, so that a satisfactory cathode cannot be formed on the light emitting layer 1072 located in the pixel opening 106a, affecting the Light-emitting properties of light-emitting devices. Further, in the view of the longitudinal section of the display panel, the distance between the first top surface 1021a and the adjacent pixel opening 106a is greater than or equal to 2 microns and less than or equal to 10 microns.
  • first light-transmitting portion 1041 and the first cathode suppression portion 1021 are provided in the first display area 100a, when external light enters the display panel When inside, the external light will be reflected by the metal inside the display panel (such as the driving array layer 108 ). Since the second display area 100b is not provided with the first light-transmitting portion 1041 and the first cathode suppression portion 1021, external light is lost when passing through the polarizer 104 and the cathode 103.
  • the metal inside the display panel can only reflect light with loss, thus causing the first display area 100a to reflect external light stronger than the second display area 100b to reflect external light , resulting in a display difference between the first display area 100a and the second display area 100b, which is not conducive to user experience.
  • the display panel further includes a third display area located between the first display area 100a and the second display area 100b 100c.
  • the third display region 100c includes a second light-transmitting region 1001c and a second light-emitting region 1001d
  • the cathode suppression layer 102 includes a second cathode suppression portion 1022 located in the second light-transmitting region 1001c.
  • the cathode 103 is located in the second light-emitting region 1001d and the second light-transmitting region 1001c and covers at least part of the second cathode suppression part 1022, between the cathode 103 and the second cathode suppression part 1022
  • the bonding force is smaller than the bonding force between the cathode 103 and the film layer under the cathode 103 and in contact with the cathode 103 in the second light emitting region 1001d, so that the cathode suppression layer 102
  • the cathode 103 deposited on the upper layer is thinner or no cathode 103 is deposited (that is, the thickness of the cathode 103 located on the second cathode suppression part 1022 is smaller than that of the cathode 103 located in the second light emitting region 1001d thickness), so that the light transmittance of the third display region 100c can be improved without changing the manufacturing process of the cathode 103 .
  • the polarizer 104 also includes a second light-transmitting portion 1042 located in the second light-transmitting region 1001c, the second light-transmitting portion 1042 is located above the second cathode suppressing portion 1022, and the second light-transmitting portion 1042 is located above the second cathode suppressing portion 1022.
  • the orthographic projection of the light portion 1042 on the substrate 101 is located within the boundaries of the orthographic projection of the second cathode suppression portion 1022 on the substrate 101 .
  • the light transmittance of the third display area 100c is greater than that of the second display area 100b light transmittance.
  • the second cathode suppression part 1022 may be different in terms of distribution density, arrangement quantity, area, etc., so as to realize the display transition between the first display area 100a and the second display area 100b.
  • the width of the first cathode suppression part 1021 is greater than the width of the second cathode suppression part 1022, so that each of the first cathode suppression parts 1021 is
  • the area of the orthographic projection on the substrate 101 is greater than the area of the orthographic projection of each of the second cathode suppression parts 1022 on the substrate 101, as shown in FIG.
  • the width of the second light-transmitting portion 1042 gradually increases from the second display area 100b to the first display area 100a in the longitudinal section viewing angle of the display panel, so that In the direction from the second display area 100b to the first display area 100a, the reflection of the display panel to the external light becomes stronger gradually, so that the first display area 100a and the second display area 100b shows a gradual transition.
  • the width of the second cathode suppression part 1022 gradually increases from the second display area 100b to the direction of the first display area 100a, so that In the direction from the second display area 100b to the first display area 100a, the reflection of the display panel to external light becomes stronger gradually, so that the first display area 100a and the second display area 100b The gradual transition of the display.
  • FIGS. 4A to 4C are structural schematic diagrams of the second cathode suppression part and the second light-transmitting part provided by the embodiment of the present application, the second cathode suppression part 1022 can be completely covered by the cathode 103, as shown in Figure 4A ; or the second cathode suppression portion 1022 is partially covered by the cathode 103, as shown in FIGS. 4B to 4C.
  • the area covered by the cathode 103 of the second cathode suppression part 1022 is larger than the area covered by the cathode 103 of the first cathode suppression part 1021, so that The difference in area between the cathode 103 on the second cathode suppression part 1022 and the cathode 103 on the first cathode suppression part 1021 reduces the reflection of external light by the metal inside the display panel, thereby reducing the second cathode suppression part 1021.
  • the display of the first display area 100a is different from that of the second display area 100b.
  • the thickness of the cathode 103 on the second cathode suppression portion 1022 gradually decreases from the second display area 100b to the first display area 100a, so as to utilize the cathode 103
  • the loss of external light in the direction from the second display area 100b to the first display area 100a is gradually reduced, and the reflection of the external light by the display panel is from the second display area 100b to the first display area 100a.
  • the direction of the first display area 100a gradually becomes stronger, so as to realize the gradual transition of the display of the first display area 100a and the second display area 100b.
  • the second cathode suppression portion 1022 includes a second top surface 1022a, a second bottom surface 1022b opposite to the second top surface 1022a, and a second bottom surface 1022b connected to the second top surface 1022a and On the second side 1022c between the second bottom surfaces 1022b , the second bottom surface 1022b faces the substrate 101 , and the second top surface 1022a faces the polarizer 104 .
  • the cathode 103 covers at least part of the second side 1022c.
  • the width L7 of the second top surface 1022a is smaller than the width L8 of the second bottom surface 1022b, and the gap between the second side surface 1022c and the second bottom surface 1022b
  • the angle is an acute angle; that is, in a plan view, the orthographic projection of the second top surface 1022a on the second bottom surface 1022b is located within the boundary of the second bottom surface 1022b.
  • the width L9 of the second transparent portion 1042 is greater than or equal to the width L7 of the second top surface 1022a and less than or equal to the width L8 of the second bottom surface 1022b. That is, in a plan view angle, the orthographic projection of the second top surface 1022a on the second bottom surface 1022b is located within the orthographic projection of the second light-transmitting portion 1042 on the second bottom surface 1022b, and the second The orthographic projection of the light-transmitting portion 1042 on the second bottom surface 1022b is located within the boundary of the second bottom surface 1022b, so as to ensure that light passes through the second light-transmitting portion 1042 and the second cathode suppression portion 1022 At the same time, the anti-reflection function of the polarizer 1043 located above the cathode 103 is not affected.
  • the cathode 103 covers a part of the second side surface 1022c, so that the second cathode suppression portion 1022 has a second boundary with the cathode 103, and the width L9 of the second light-transmitting portion 1042 is greater than or equal to
  • the width L9 of the second light-transmitting portion 1042 gradually increases from the side close to the substrate 101 to the side away from the substrate 101, so The width L91 of the portion close to the substrate 101 of the second light-transmitting portion 1042 is greater than or equal to the width L7 of the second top surface 1022a, and the portion of the second light-transmitting portion 1042 far away from the substrate 101
  • the width L92 of the second bottom surface 1022b is less than or equal to the difference L4b between the width L8 of the second bottom surface 1022b and the width L52 of the cathode 103 covering at least part of the second side surface 1022c, as shown in FIG. 4C .
  • the orthographic projection of the part of the second transparent part 1042 close to the substrate 101 on the second bottom surface 1022b is located at the part of the second transparent part 1042 far away from the substrate 101
  • the orthographic projection of the second top surface 1022a on the second bottom surface 1022b is located in the second light-transmitting portion 1042 close to the substrate 101 Part of the orthographic projection on the second bottom surface 1022b
  • the orthographic projection of the part of the second light-transmitting portion 1042 away from the substrate 101 on the second bottom surface 1022b is located at the second junction In the orthographic projection on the second bottom surface 1022b.
  • the width L52 of the outer surface of the second cathode suppression part 1022 covered by the cathode 103 occupies the second bottom surface 1022b and the second bottom surface 1022b.
  • the width difference L12 of the second top surface 1022a is 0.25 times.
  • the difference L12 between the widths of the second bottom surface 1022b and the second top surface 1022a is greater than or equal to 2 microns and less than or equal to 6 microns.
  • the difference L12 between the widths of the second bottom surface 1022b and the second top surface 1022a is equal to 2 microns, 2.5 microns, 3 microns, 4 microns, 5.5 microns or 6 microns.
  • the distance L62 between the second junction and the second top surface 1022a is greater than or equal to 3 microns and less than or equal to 8 microns.
  • the distance L62 between the second junction and the second top surface 1022a is equal to 3 microns, 3.2 microns, 3.5 microns, 4 microns, 5 microns, 6 microns, 7 microns, 7.5 microns or 8 microns.
  • the distance between the second cathode suppression portion 1022 and the adjacent pixel opening 106a is greater than or equal to 2 microns and less than or equal to 10 microns, so as to avoid During the preparation process, the preparation material of the cathode suppression layer 102 falls into the pixel opening 106a, so that a satisfactory cathode cannot be formed on the light-emitting layer 1072 located in the pixel opening 106a, which affects the performance of the light-emitting device. Luminous properties. Further, the distance between the second top surface 1022a and the adjacent pixel opening 106a is greater than or equal to 2 microns and less than or equal to 10 microns.
  • the width of the pixel opening 106a located in the third display area 100c is greater than the width of the pixel opening 106a located in the first display area 100a , so that the display effect of the third display area 100c is better than the display effect of the first display area 100a within a unit area. Further, in the direction from the second display area 100b to the first display area 100a, the width of the pixel opening 106a gradually decreases, so as to realize the display from the second display area 100b to the first display area 100a shows the transition.
  • the polarizer 104 is processed by a laser sintering process to form the first light-transmitting portion 1041 and the second light-transmitting portion 1042, or the polarizer 104 is formed by a laser cutting process to form a plurality of via holes, corresponding to The first light-transmitting portion 1041 is formed at the via hole in the first display area 100a, and the second light-transmitting portion 1042 is formed corresponding to the via hole in the third display area 100c, Or the polarizer 104 forms a plurality of via holes in the first display area 100a and the third display area 100c through a laser cutting process, and fills the via holes with transparent organic materials to form the first display area 100a and the third display area 100c respectively.
  • the transparent part 1041 and the second transparent part 1042 are processed by a laser sintering process to form the first light-transmitting portion 1041 and the second light-transmitting portion 1042, or the polarizer 104 is formed by a laser cutting process to form a plurality of
  • the polarizer 104 includes a protective film, a supporting film, a polarizing functional film, a supporting film, a pressure-sensitive adhesive, and a release film that are laminated. Further, the polarizer 104 also includes a phase retardation film.
  • the protective film is used to protect the polarizing functional film from external damage; the supporting film is used to support the polarizing functional film and protect the polarizing functional film from water vapor, ultraviolet rays, etc.
  • the preparation material of the membrane includes Triacetyl Cellulose (TAC).
  • the polarizing functional film forms polarizing properties after absorbing dichroic dye molecules (such as iodine molecules), and the preparation material of the polarizing functional film includes polyvinyl alcohol (Polyvinyl Alcohol, PVA).
  • the pressure-sensitive adhesive is used to attach the polarizer 104 ; the release film is used to protect the pressure-sensitive adhesive from damage and avoid air bubbles when attaching the polarizer 104 .
  • the high energy of the laser will break the order of the molecules of the dichroic absorbing substance on the polarizing function layer, thereby forming all polarizers without polarizing function in the polarizer 104.
  • the first transparent part 1041 and the second transparent part 1042 are formed by laser sintering process, the wavelength of the laser can be 532 nanometers, the energy can be 14W, 18W or 22W, and the duration is picoseconds class.
  • the shape of the first light-transmitting portion 1041 is the same as that of the first cathode suppression portion 1021
  • the shape of the second light-transmission portion 1042 is the same as that of the second cathode suppression portion. 1022 have the same shape.
  • the shapes of the first light-transmitting portion 1041 and the second light-transmitting portion 1042 are not limited to shapes such as circle, rectangle, rounded rectangle, and ellipse.
  • the driving array layer 108 includes a plurality of pixel driving circuits, the pixel driving circuits that drive the light emitting devices located in the first display area 100a to emit light are located in the third display area 100c, the The display panel further includes a third insulating layer 1089 and a connecting wire 1080 located between the third metal layer 1087 and the planar layer 1088, and the pixel driving circuit communicates with the corresponding light emitting device through the connecting wire 1080.
  • the devices are electrically connected, as shown in Figure 1B.
  • FIG. 5 is a flow chart of the preparation of the display panel provided by the embodiment of the present application.
  • the present application also provides a method for preparing a display panel, which is used to prepare any of the above-mentioned display panels.
  • the display panel includes a first display area and a second display area located on the periphery of the first display area, the first display area includes an adjacent first light-transmitting area and a first light-emitting area, the The preparation method of the display panel includes the following steps:
  • Step S10 providing a substrate, and preparing a cathode suppression layer on the substrate.
  • the cathode suppression layer includes a first cathode suppression part located in the first light-transmitting region.
  • Step S20 preparing a cathode on the substrate and the cathode suppression layer.
  • the cathode is located in the first light-emitting region and the first light-transmitting region and covers at least part of the first cathode suppression part, and the light transmittance of the cathode suppression layer is greater than the light transmittance of the cathode , that is, the light transmittance of the first cathode suppression part is greater than the light transmittance of the cathode; the bonding force between the cathode and the first cathode suppression part is smaller than the cathode and the first light emitting region The binding force between the film layers located below and in contact with the cathode.
  • Step S30 preparing a polarizer on the cathode and the cathode suppression layer.
  • the polarizer includes a first light-transmitting portion located in the first light-transmitting region, the first light-transmitting portion is located above the first cathode suppression portion, and the first light-transmitting portion is located in the first light-transmitting region.
  • the orthographic projection on the substrate is within the boundaries of the orthographic projection of the first cathode suppression portion on the substrate.
  • the cathode suppression layer can be prepared on the substrate by using a high-precision metal mask and an evaporation process; the cathode is prepared on the substrate by using an open mask and an evaporation process.
  • the polarizer is processed by a laser sintering process to form the first light-transmitting portion, or the polarizer is laser-cut to form a plurality of via holes, and each of the via holes is filled with a transparent organic material to form the first transparent portion. light department.
  • the preparation material of the cathode includes metallic magnesium, and the preparation material of the cathode suppression layer includes a light-transmitting material.
  • the preparation material of the cathode suppression layer 102 includes BAlq (bis(2-methyl-8-hydroxyquinoline)-4-(p-phenylphenol) aluminum), TAZ (3-(biphenyl-4 -yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole) and at least one of OTI (indium oxide).
  • Step S11 preparing a driving array layer and an anode on the substrate. Wherein, in a top view, the orthographic projection of the anode on the substrate does not overlap with the orthographic projection of the cathode suppression layer on the substrate.
  • Step S12 preparing a pixel definition layer on the driving array layer and the anode.
  • the pixel definition layer includes a plurality of pixel openings exposing the anode.
  • Step S13 preparing a second auxiliary layer on the pixel definition layer and the anode by using an open mask and an evaporation process.
  • Step S14 preparing a light-emitting layer on the second auxiliary layer by using a high-precision metal mask and an evaporation process. Wherein, the light emitting layer is located in the pixel opening.
  • Step S15 preparing a first auxiliary layer on the light-emitting layer and the second auxiliary layer by using an open mask and an evaporation process.
  • the display panel further includes a third display area located between the first display area and the second display area, and the third display area includes an adjacent second light-transmitting area and a second light-emitting area. Area.
  • the cathode suppression layer further includes a second cathode suppression part located in the second light-transmitting region.
  • the cathode is also located in the second light-emitting region and the second light-transmitting region and covers at least part of the second cathode suppression part, and the cathode and the second cathode suppression part The bonding force between them is smaller than the bonding force between the cathode and the film layer in the second light-emitting region which is located below the cathode and in contact with the cathode.
  • the polarizer further includes a second light-transmitting part located in the second light-transmitting region, the second light-transmitting part is located above the second cathode suppression part, and the first The orthographic projections of the two light-transmitting parts on the substrate are located within the boundaries of the orthographic projections of the second cathode suppression part on the substrate.
  • the polarizer is processed by a laser sintering process to form the second light-transmitting portion, or the polarizer is laser cut to form a plurality of via holes in the third display area, and each via hole is filled with a transparent An organic material forms the second light-transmitting portion.
  • the present application also provides a display device, which includes any one of the above-mentioned display panels or a display panel prepared by the method for preparing a display panel.
  • the display panel includes fixed terminals (such as televisions, desktop computers, etc.), mobile terminals (such as mobile phones, notebook computers, etc.), and wearable devices (such as bracelets, virtual display devices, enhanced display devices, etc.).
  • fixed terminals such as televisions, desktop computers, etc.
  • mobile terminals such as mobile phones, notebook computers, etc.
  • wearable devices such as bracelets, virtual display devices, enhanced display devices, etc.

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Abstract

一种显示面板及显示装置。显示面板包括衬底(101)、阴极抑制层(102)、阴极(103)及偏光片(104)，阴极抑制层(102)包括位于第一透光区(1001a)内的第一阴极抑制部(1021)，阴极(103)位于第一发光区(1001b)光部，第一透光部(1041)在衬底(101)上的正投影位于第一阴极抑制部(1021)在衬底(101)上的正投影的边界内。

Description

显示面板及显示装置 技术领域
本申请涉及显示技术领域，特别涉及一种显示面板及一种显示装置。
 背景技术
为实现全面屏显示，会将光学元件设置在显示屏下。但现有的有机发光显示装置中，阴极采用整面设置，光线透过偏光片及阴极时的损失较大，从而导致使光学元件只能接收具有损失的光信号，影响光学元件的工作质量。
 技术问题
本申请实施例提供一种显示面板及一种显示装置，以改善光线透过偏光片及阴极时损失较大，影响光学元件工作质量的问题。
 技术解决方案
本申请提供一种显示面板，所述显示面板包括第一显示区和位于所述第一显示区外围的第二显示区，所述第一显示区的透光率大于所述第二显示区的透光率，所述第一显示区包括相邻的第一透光区和第一发光区。所述显示面板包括：衬底、阴极抑制层、阴极以及偏光片。所述阴极抑制层设于所述衬底上，所述阴极抑制层包括位于所述第一透光区内的第一阴极抑制部。所述阴极位于所述第一发光区和所述第一透光区内并覆盖至少部分所述第一阴极抑制部。所述偏光片位于所述阴极上，所述偏光片包括位于所述第一透光区内的第一透光部，所述第一透光部位于所述第一阴极抑制部的上方。其中，所述第一透光部在所述衬底上的正投影位于所述第一阴极抑制部在所述衬底上的正投影的边界内。
本申请还提供一种显示面板的制备方法，所述显示面板包括第一显示区及位于所述第一显示区外围的第二显示区，所述第一显示区包括相邻的第一透光区和第一发光区，所述显示面板的制备方法包括：
步骤S10：提供一衬底，在所述衬底上制备阴极抑制层；其中，所述阴极抑制层包括位于所述第一透光区内的第一阴极抑制部；
步骤S20：在所述衬底及所述阴极抑制层上制备阴极；其中，所述阴极位于所述第一发光区和所述第一透光区内并覆盖至少部分所述第一阴极抑制部；
步骤S30：在所述阴极及所述阴极抑制层上制备偏光片；其中，所述偏光片包括位于所述第一透光区内的第一透光部，所述第一透光部位于所述第一阴极抑制部的上方，所述第一透光部在所述衬底上的正投影位于所述第一阴极抑制部在所述衬底上的正投影的边界内。
本申请还提供一种显示装置，包括任一上述的显示面板或如上述的显示面板的制备方法制备得到的显示面板。
 有益效果
在本申请提供的显示面板及显示装置中，通过在显示面板中设置阴极抑制层，使阴极位于第一发光区和第一透光区内并覆盖至少部分第一阴极抑制部，阴极抑制层的透光率大于阴极的透光率，可降低阴极对第一透光区透光率的影响。通过在偏光片正对第一阴极抑制部的部分设置第一透光部，以使第一透光区的透光率大于第一发光区及第二显示区的透光率，从而进一步提高第一显示区的透光率，有利于降低光线透过第一透光区时，偏光片及阴极对光线造成的损失，进而改善光学元件的工作质量。
 附图说明
图1A~图1B是本申请实施例提供的显示面板的结构示意图；
图2A~图2D是本申请实施例提供的第一阴极抑制部与第一透光部的结构示意图；
图3是本申请实施例提供的第一阴极抑制部与第二阴极抑制部的结构示意图；
图4A~图4C是本申请实施例提供的第二阴极抑制部与第二透光部的结构示意图；
图5是本申请实施例提供的显示面板的制备流程图。
 本发明的实施方式
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。
具体地，如图1A~图1B是本申请实施例提供的显示面板的结构示意图，本申请实施例提供一种显示面板，所述显示面板包括第一显示区100a以及第二显示区100b，所述第二显示区100b位于所述第一显示区100a外围，所述第一显示区100a包括第一透光区1001a和第一发光区1001b。
其中，所述第二显示区100b为所述显示面板的主显示区，以用于显示图像。所述第一显示区100a既可以用于显示图像，以配合所述第二显示区100b使所述显示面板实现全面屏显示的效果；所述第一显示区100a也可以用于感测，以配合摄像头、光学触控组件以及指纹识别传感器等光学元件实现所述显示面板的感测功能，提高用户的体验。
进一步地，所述第一透光区1001a用于供光线透过，以配合光学元件实现所述显示面板的感测功能；所述第一发光区1001b用于实现所述第一显示区100a的显示功能。通过在所述第一显示区100a内设置第一透光区1001a，可以使所述第一显示区100a的透光率大于所述第二显示区100b的透光率，有利于使所述显示面板在所述第一显示区100a实现较好的感测。
可选地，所述第一显示区100a可设置于所述显示面板的任意位置；所述显示面板可包括多个所述第一显示区100a。
请继续参阅图1A~图1B，所述显示面板包括衬底101、阴极抑制层102、阴极103及偏光片104。
所述衬底101包括柔性衬底或刚性衬底。进一步地，所述柔性衬底的制备材料包括聚酰亚胺等有机材料；所述刚性衬底的制备材料包括玻璃、金属、塑料等。可选地，所述衬底101上还可制备有缓冲层等未示出部分。
所述阴极抑制层102设于所述衬底101上，所述阴极抑制层102包括位于所述第一透光区1001a内的第一阴极抑制部1021。其中，所述阴极抑制层102的制备材料包括透光材料。具体地，所述阴极抑制层102的制备材料包括BAlq(双(2-甲基-8-羟基喹啉)-4-(对苯基苯酚)合铝)、TAZ(3-(联苯-4-基)-5-(4-叔丁基苯基)-4-苯基-4H-1,2,4-三唑)及OTI（氧化铟）中的至少一种。
所述阴极103位于所述第一发光区1001b和所述第一透光区1001a内并覆盖至少部分所述第一阴极抑制部1021，所述阴极抑制层102的透光率大于所述阴极103的透光率，所述阴极103与所述阴极抑制层102之间的结合力小于所述阴极103与所述第一发光区1001b内的位于所述阴极103之下且与所述阴极103接触的膜层之间的结合力。其中，所述阴极103的制备材料包括金属镁。
所述偏光片104位于所述阴极103上，所述偏光片104包括第一透光部1041和与所述第一透光部1041相邻的偏光部1043。所述第一透光部1041位于所述第一透光区1001a内，且所述第一透光部1041位于所述第一阴极抑制部1021的上方。其中，所述第一透光部1041在所述衬底101上的正投影位于所述第一阴极抑制部1021在所述衬底101上的正投影的边界内。
可以理解的，所述第一透光部1041在所述衬底101上的正投影位于所述第一阴极抑制部1021在所述衬底101上的正投影的边界内包括：所述第一透光部1041在所述衬底101上的正投影的边界位于所述第一阴极抑制部1021在所述衬底101上的正投影的边界内侧的情况，也包括所述第一透光部1041在所述衬底101上的正投影与第一阴极抑制部1021在所述衬底101上的正投影相重合的情况。
通过在所述显示面板中设置所述阴极抑制层102，所述阴极抑制层102的透光率大于所述阴极103的透光率，所述阴极103与所述第一阴极抑制部1021之间的结合力小于所述阴极103与所述第一发光区1001b内的位于所述阴极103之下且与所述阴极103接触的膜层之间的结合力，可使位于所述阴极抑制层102上的所述阴极103的厚度较薄或无所述阴极103，从而降低所述阴极103对所述第一透光区1001a透光率的影响。通过在所述偏光片104正对所述第一阴极抑制部1021的部分设置所述第一透光部1041，以使所述第一透光区1001a的透光率大于所述第一发光区1001b及所述第二显示区100b的透光率，可进一步提高所述第一显示区100a的透光率，有利于降低光线透过所述第一透光区1001a时，所述偏光片104对光线造成的损失，进而改善光学元件的工作质量。
可选地，所述第一阴极抑制部1021在所述衬底101上的正投影面积大于或等于所述第一透光区1001a面积的0.05倍，且小于或等于所述第一透光区1001a面积的0.95倍，以保证所述第一显示区100a可兼顾显示功能和感测功能。
可选地，所述阴极103采用整面蒸镀工艺形成。在采用整面蒸镀工艺形成所述阴极103时，由于所述阴极103与所述阴极抑制层102之间的结合力小于所述阴极103与所述第一发光区1001b内的位于所述阴极103之下且与所述阴极103接触的膜层之间的结合力，因此，在所述阴极抑制层102上沉积的所述阴极103较薄或没有所述阴极103沉积（即使得位于所述第一阴极抑制部1021上的所述阴极103的厚度小于位于所述第一发光区1001b的所述阴极103的厚度），从而可在不改变所述阴极103制程工艺的前提下，改善所述第一显示区100a的透光率。
可选地，所述显示面板还包括第一辅助层1051，所述第一辅助层1051位于所述阴极103之下，所述阴极103与所述阴极抑制层102之间的结合力小于所述阴极103与所述第一辅助层1051的结合力。
进一步地，所述第一辅助层1051包括沿远离所述衬底101的方向依次层叠设置的电子传输层和电子注入层，所述第一辅助层1051的制备材料包括透明材料，以降低所述第一辅助层1051对所述第一显示区100a透光率的影响。
可选地，为降低所述阴极103对所述第一显示区100a的透光率的影响，所述第一辅助层1051位于所述阴极抑制层102之下。此外，所述第一辅助层1051还可在所述第一透光区1001a内设置有凹槽或过孔，所述第一阴极抑制部1021位于所述凹槽或所述过孔内，以在降低所述阴极103对所述第一显示区100a的透光率的影响的同时，降低所述第一透光区1001a内所述阴极103、所述第一阴极抑制部1021的厚度与所述第一发光区1001b内所述阴极103、所述第一辅助层1051的厚度之间的差异。可选地，在所述显示面板的纵截面视角下，所述阴极抑制层102的厚度小于或等于所述阴极103的厚度。
如图2A~图2D是本申请实施例提供的第一阴极抑制部与第一透光部的结构示意图。其中，所述第一阴极抑制部1021上可整面覆盖有所述阴极103，如图2A所示；或所述阴极103覆盖所述第一阴极抑制部1021的至少部分，如图2B~图2C所示。此外，所述阴极103还可不覆盖所述第一阴极抑制部1021，即所述阴极103与所述第一阴极抑制部1021之间可具有间隙；或，所述阴极103与所述第一阴极抑制部1021相接，以降低所述阴极103覆盖所述第一阴极抑制部1021的外侧面的面积，从而降低所述阴极103对所述第一透光区1001a的透光率的影响。但在实际制程中，受制程工艺等因素的限制，所述阴极103会覆盖所述第一阴极抑制部1021的外侧面的至少一部分，如图2B~图2C所示。
请继续参阅图2A~图2C，所述第一阴极抑制部1021包括第一顶面1021a、与所述第一顶面1021a相对的第一底面1021b、以及连接于所述第一顶面1021a和所述第一底面1021b之间的第一侧面1021c，所述第一底面1021b朝向所述衬底101，所述第一顶面1021a朝向所述偏光片104。其中，所述阴极103覆盖所述第一侧面1021c的至少部分。在所述显示面板的纵截面视角下，所述第一顶面的1021a的宽度L1小于所述第一底面1021b的宽度L2，所述第一侧面1021c与所述第一底面1021b之间的夹角为锐角；即在俯视视角下，所述第一顶面1021a在所述第一底面1021b上的正投影位于所述第一底面1021b的边界内。
在所述显示面板的纵截面视角下，所述第一透光部1041的宽度L3大于或等于所述第一顶面1021a的宽度L1且小于或等于所述第一底面1021b的宽度L2。即在俯视视角下，所述第一顶面1021a在所述第一底面1021b上的正投影位于所述第一透光部1041在所述第一底面1021b上的正投影内，所述第一透光部1041在所述第一底面1021b上的正投影位于所述第一底面1021b的边界内。
进一步地，请继续参阅图2B和图2D中的图(a)，所述阴极103覆盖所述第一侧面1021c的一部分，使得所述第一阴极抑制部1021与所述阴极103具有第一交界CB1，所述第一透光部1041的宽度L3大于或等于所述第一顶面1021a的宽度L1且小于或等于所述第一底面1021b的宽度L2与所述阴极103覆盖所述第一侧面1021c的所述至少部分的宽度L51之差L4a（即L1≤L3≤L2-L51=L4a），即在俯视视角下，所述第一透光部1041在所述第一底面1021b上的正投影位于所述第一交界CB1在所述第一底面1021b上的正投影内，以在保证光线透过所述第一透光部1041及所述第一阴极抑制部1021被光学元件接收的同时，不影响位于所述阴极103上方的所述偏光部1043的降反射功能。其中，在图2B~图2D所示的第一阴极抑制部与第一透光部的结构示意图中，CB1表示第一交界、CB2表示所述第一顶面1021a的边界，CB3表示所述第一底面1021b的边界，CB4表示第一透光部1041的边界；所述第一透光部1041、所述第一阴极抑制部1021在俯视视角下的形状不限于图2D所示的圆角矩形。
可选地，在所述显示面板的纵截面视角下，所述第一透光部1041自靠近所述衬底101的一侧至远离所述衬底101的一侧可具有相同的宽度，此时，所述第一透光部1041的宽度L3可等于所述第一底面1021b的宽度L2与所述阴极103覆盖所述第一侧面1021c的所述至少部分的宽度L51之差L4a，如图2B所示。
可选地，在所述显示面板的纵截面视角下，所述第一透光部1041的宽度自靠近所述衬底101的一侧向远离所述衬底101的一侧逐渐增大，所述第一透光部1041的靠近所述衬底101的部分的宽度L31大于或等于所述第一顶面1021a的宽度L1，所述第一透光部1041的远离所述衬底101的部分的宽度L32小于或等于所述第一底面1021b的宽度L2与所述阴极103覆盖所述第一侧面1021c的所述至少部分的宽度L51之差L4a，如图2C所示。即如图2D中的图（b）所示，在俯视视角下，所述第一透光部1041的靠近所述衬底101的部分在所述第一底面1021b上的正投影位于所述第一透光部1041的远离所述衬底101的部分在所述第一底面1021b上的正投影内，所述第一顶面1021a在所述第一底面1021b上的正投影位于所述第一透光部1041的靠近所述衬底101的部分在所述第一底面1021b上的正投影内，所述第一透光部1041的远离所述衬底101的部分在所述第一底面1021b上的正投影位于所述第一交界CB1在所述第一底面1021b上的正投影内。其中，在图2C~图2D所示的第一阴极抑制部与第一透光部的结构示意图中，CB41表示所述第一透光部1041的靠近所述衬底101的部分在所述第一底面1021b上的投影边界，CB42表示所述第一透光部1041的远离所述衬底101的部分在所述第一底面1021b上的投影边界。
一般地，受制程工艺、设备精度等因素的影响，在所述显示面板的纵截面视角下，所述阴极103覆盖所述第一阴极抑制部1021的外侧面的宽度L51占所述第一底面1021b和所述第一顶面1021a的宽度之差Ll1的0.25倍。其中，所述第一底面1021b和所述第一顶面1021a的宽度之差Ll1为大于或等于2微米且小于或等于6微米。可选地，所述第一底面1021b和所述第一顶面1021a的宽度之差Ll1等于2微米、2.5微米、3微米、4微米、5.5微米或6微米。
相应的，在俯视视角下，所述第一交界CB1距所述第一顶面1021a的边界CB2的距离L61大于或等于3微米且小于或等于8微米。可选地，所述第一交界CB1距所述第一顶面1021a的边界CB2的距离L61等于3微米、3.2微米、3.5微米、4微米、5微米、6微米、7微米、7.5微米或8微米。可以理解的，所述第一透光部1041的宽度L3小于或等于所述第一底面1021b的宽度L2与所述阴极103覆盖所述第一侧面1021c的所述至少部分的宽度L51之差L4a即为L3≤L1+L61，其中，L61=3μm~8μm。
请继续参阅图1A~图1B，所述显示面板还包括像素定义层106、阳极1071、发光层1072、驱动阵列层108及封装层109。
所述像素定义层106位于所述衬底101上，所述像素定义层106设有多个像素开口106a，所述发光层1072位于所述像素开口106a内，所述阳极1071位于所述像素定义层106靠近所述衬底101的一侧，且对应所述像素开口106a。
所述阳极1071、所述阴极103及位于所述阳极1071和所述阴极103之间的所述发光层1072形成发光器件。进一步地，所述显示面板还包括第二辅助层1052，所述第二辅助层1052位于所述阳极1071及所述像素定义层106上，所述第一辅助层1051位于所述发光层1072及所述第二辅助层1052上，所述第二辅助层1052包括沿远离衬底101的方向依次层叠设置的空穴注入层和空穴传输层，所述空穴注入层覆盖所述阳极1071。可选地，所述发光器件还包括所述第一辅助层1051及所述第二辅助层1052。
所述驱动阵列层108位于所述衬底101靠近所述像素定义层106的一侧，所述驱动阵列层108用于驱动所述发光器件发光。可选的，所述驱动阵列层108包括位于所述衬底101上的有源层1081、覆盖所述有源层1081的第一绝缘层1082、设置于所述第一绝缘层1082上的第一金属层1083、覆盖所述第一金属层1083的第二绝缘层1084、设置于所述第二绝缘层1084上的第二金属层1085、覆盖所述第二金属层1085的层间介质层1086、设置于所述层间介质层1086上的第三金属层1087、以及覆盖所述第三金属层1087的平坦层1088。其中，所述第一金属层1083包括与所述有源层1081对位设置的栅极，所述第二金属层1085包括与所述栅极对位设置的电极部，所述第三金属层1087包括与所述有源层1081电性连接的源极和漏极。
所述封装层109位于所述偏光片104靠近所述阴极103的一侧，所述封装层109包括层叠设置的无机封装层、有机封装层及无机封装层。可选地，为在不影响封装性能的前提下，使得更大视角的光线可进入所述显示面板内部，所述封装层109对应所述第一透光区1001a的部分的厚度h1可大于或等于6微米且小于或等于10微米。进一步地，所述封装层109对应所述第一透光区1001a的部分的厚度h1等于6微米、6.5微米、7微米、8微米、9微米、9.6微米或10微米。
请继续参阅图1B，在所述显示面板的纵截面视角下，所述第一阴极抑制部1021和与之相邻的所述像素开口106a的距离大于或等于2微米且小于或等于10微米，以避免在制备过程中，所述阴极抑制层102的制备材料落入所述像素开口106a内，致使位于所述像素开口106a内的所述发光层1072上无法形成满足要求的阴极，影响所述发光器件的发光性能。进一步地，在所述显示面板的纵截面视角下，所述第一顶面1021a和与之相邻的所述像素开口106a的距离大于或等于2微米且小于或等于10微米。
请继续参阅图1A~图1B，由于在所述第一显示区100a内设有所述第一透光部1041及所述第一阴极抑制部1021，因此，当外部的光线进入所述显示面板内部时，外部的光会被所述显示面板内部的金属（如所述驱动阵列层108）进行反射。而所述第二显示区100b由于未设置所述第一透光部1041及所述第一阴极抑制部1021，因此，外部的光在透过所述偏光片104及所述阴极103时存在损失，所述显示面板内部的金属只能基于具有损失的光线进行反射，由此导致所述第一显示区100a对外部光的反射要比所述第二显示区100b对所述外部光的反射强，致使所述第一显示区100a和所述第二显示区100b存在显示差异，不利于用户体验。为降低所述第一显示区100a和所述第二显示区100b的显示差异，所述显示面板还包括位于所述第一显示区100a和所述第二显示区100b之间的第三显示区100c。
具体地，所述第三显示区100c包括第二透光区1001c和第二发光区1001d，所述阴极抑制层102包括位于所述第二透光区1001c内的第二阴极抑制部1022。
所述阴极103位于所述第二发光区1001d和所述第二透光区1001c内并覆盖至少部分所述第二阴极抑制部1022，所述阴极103与所述第二阴极抑制部1022之间的结合力小于所述阴极103与所述第二发光区1001d内的位于所述阴极103之下且与所述阴极103接触的膜层之间的结合力，以使在所述阴极抑制层102上沉积的所述阴极103较薄或没有所述阴极103沉积（即使得位于所述第二阴极抑制部1022上的所述阴极103的厚度小于位于所述第二发光区1001d的所述阴极103的厚度），从而可在不改变所述阴极103制程工艺的前提下，改善所述第三显示区100c的透光率。
所述偏光片104还包括位于所述第二透光区1001c内的第二透光部1042，所述第二透光部1042位于所述第二阴极抑制部1022的上方，所述第二透光部1042在所述衬底101上的正投影位于所述第二阴极抑制部1022在所述衬底101上的正投影的边界内。
通过在所述第三显示区100c内设置所述第二透光部1042及所述第二阴极抑制部1022，以使所述第三显示区100c的透光率大于所述第二显示区100b的透光率。
进一步地，位于所述第一显示区100a内的所述第一透光部1041、所述第一阴极抑制部1021与位于所述第三显示区100c内的所述第二透光部1042、所述第二阴极抑制部1022可在分布密度、设置数量、面积等方面具有不同，以实现所述第一显示区100a和所述第二显示区100b的显示过渡。
具体地，在所述显示面板的纵截面视视角下，所述第一阴极抑制部1021的宽度大于所述第二阴极抑制部1022的宽度，以使每一所述第一阴极抑制部1021在所述衬底101上的正投影面积大于每一所述第二阴极抑制部1022在所述衬底101上的正投影面积，如图3是本申请实施例提供的第一阴极抑制部与第二阴极抑制部的结构示意图；和/或，在所述显示面板的纵截面视视角下，所述第一透光部1041的宽度大于所述第二透光部1042的宽度，以使每一所述第一透光部1041在所述衬底101上的正投影面积大于每一所述第二透光部1042在所述衬底101上的正投影面积；和/或，所述第一阴极抑制部1021在所述第一显示区100a内的分布数量大于或等于所述第二阴极抑制部1022在所述第三显示区100c内的分布数量的2倍，相应地，所述第一透光部1041在所述第一显示区100a内的分布数量大于或等于所述第二透光部1042在所述第三显示区100c内的分布数量的2倍。
可选地，在所述显示面板的纵截面视角下，所述第二透光部1042的宽度自所述第二显示区100b向所述第一显示区100a的方向上逐渐增大，以使在自所述第二显示区100b向所述第一显示区100a的方向上，所述显示面板对外部光的反射逐渐变强，从而实现所述第一显示区100a与所述第二显示区100b的显示的逐渐过渡。
进一步地，在所述显示面板的纵截面视角下，所述第二阴极抑制部1022的宽度自所述第二显示区100b向所述第一显示区100a的方向上逐渐增大，以使在自所述第二显示区100b向所述第一显示区100a的方向上，所述显示面板对外部光的反射逐渐变强，从而实现所述第一显示区100a与所述第二显示区100b的显示的逐渐过渡。
如图4A~图4C是本申请实施例提供的第二阴极抑制部与第二透光部的结构示意图，所述第二阴极抑制部1022可被所述阴极103全部覆盖，如图4A所示；或在所述第二阴极抑制部1022被所述阴极103部分覆盖，如图4B~图4C所示。
可选地，在一些实施例中，所述第二阴极抑制部1022被所述阴极103覆盖的面积大于所述第一阴极抑制部1021被所述阴极103覆盖的面积，以通过位于所述第二阴极抑制部1022上的所述阴极103和位于所述第一阴极抑制部1021上的所述阴极103的面积差异降低所述显示面板内部的金属对外部的光的反射，从而降低所述第一显示区100a与所述第二显示区100b的显示差异。
可选地，位于所述第二阴极抑制部1022上的所述阴极103的厚度自所述第二显示区100b向所述第一显示区100a的方向上逐渐减小，以利用所述阴极103使得外部的光在自所述第二显示区100b向所述第一显示区100a的方向上的损失逐渐减小，所述显示面板对外部光的反射在自所述第二显示区100b向所述第一显示区100a的方向上逐渐变强，从而实现所述第一显示区100a与所述第二显示区100b的显示的逐渐过渡。
请继续参阅图4A~图4C，所述第二阴极抑制部1022包括第二顶面1022a、与所述第二顶面1022a相对的第二底面1022b、以及连接于所述第二顶面1022a和所述第二底面1022b之间的第二侧面1022c，所述第二底面1022b朝向所述衬底101，所述第二顶面1022a朝向所述偏光片104。其中，所述阴极103覆盖所述第二侧面1022c的至少部分。在所述显示面板的纵截面视视角下，所述第二顶面1022a的宽度L7小于所述第二底面1022b的宽度L8，所述第二侧面1022c与所述第二底面1022b之间的夹角为锐角；即在俯视视角下，所述第二顶面1022a在所述第二底面1022b上的正投影位于所述第二底面1022b的边界内。
在所述显示面板的纵截面视角下，所述第二透光部1042的宽度L9大于或等于所述第二顶面1022a的宽度L7且小于或等于所述第二底面1022b的宽度L8。即在俯视视角下，所述第二顶面1022a在所述第二底面1022b上的正投影位于所述第二透光部1042在所述第二底面1022b上的正投影内，所述第二透光部1042在所述第二底面1022b上的正投影位于所述第二底面1022b的边界内，以在保证光线透过所述第二透光部1042及所述第二阴极抑制部1022的同时，不影响位于所述阴极103上方的所述偏光部1043的降反射功能。
进一步地，所述阴极103覆盖所述第二侧面1022c的一部分，使得所述第二阴极抑制部1022与所述阴极103具有第二交界，所述第二透光部1042的宽度L9大于或等于所述第二顶面1022a的宽度L7且小于或等于所述第二底面1022b的宽度L8与所述阴极103覆盖所述第二侧面1022c的所述至少部分的宽度L52之差L4b（即L7≤L9≤L8-L52=L4b）；即在俯视视角下，所述第二透光部1042在所述第二底面1022b上的正投影位于所述第二交界在所述第二底面1022b上的正投影内，以在保证光线透过所述第二透光部1042及所述第二阴极抑制部1022被光学元件接收的同时，不影响位于所述阴极103上方的所述偏光部1043的降反射功能。
进一步地，在所述显示面板的纵截面视角下，所述第二透光部1042的宽度L9自靠近所述衬底101的一侧向远离所述衬底101的一侧逐渐增大，所述第二透光部1042的靠近所述衬底101的部分的宽度L91大于或等于所述第二顶面1022a的宽度L7，所述第二透光部1042的远离所述衬底101的部分的宽度L92小于或等于所述第二底面1022b的宽度L8与所述阴极103覆盖所述第二侧面1022c的所述至少部分的宽度L52之差L4b，如图4C所示。即在俯视视角下，所述第二透光部1042的靠近所述衬底101的部分在所述第二底面1022b上的正投影位于所述第二透光部1042的远离所述衬底101的部分在所述第二底面1022b上的正投影内，所述第二顶面1022a在所述第二底面1022b上的正投影位于所述第二透光部1042的靠近所述衬底101的部分在所述第二底面1022b上的正投影内，所述第二透光部1042的远离所述衬底101的部分在所述第二底面1022b上的正投影位于所述第二交界在所述第二底面1022b上的正投影内。
由于受制程工艺、设备精度等因素的影响，在所述显示面板的纵截面视角下，所述阴极103覆盖所述第二阴极抑制部1022的外侧面的宽度L52占所述第二底面1022b和所述第二顶面1022a的宽度之差Ll2的0.25倍。其中，所述第二底面1022b和所述第二顶面1022a的宽度之差Ll2为大于或等于2微米且小于或等于6微米。可选地，所述第二底面1022b和所述第二顶面1022a的宽度之差Ll2等于2微米、2.5微米、3微米、4微米、5.5微米或6微米。
相应的，在俯视视角下，所述第二交界距所述第二顶面1022a的距离L62大于或等于3微米且小于或等于8微米。可选地，在俯视视角下，所述第二交界距所述第二顶面1022a的距离L62等于3微米、3.2微米、3.5微米、4微米、5微米、6微米、7微米、7.5微米或8微米。可以理解的，所述第二透光部1042的宽度L9小于或等于所述第二底面1022b的宽度L8与所述阴极103覆盖所述第二侧面1022c的所述至少部分的宽度L52之差L4b即为L9≤L7+L62，其中，L62=3μm~8μm。
进一步地，在所述显示面板的纵截面视角下，所述第二阴极抑制部1022和与之相邻的所述像素开口106a的距离大于或等于2微米且小于或等于10微米，以避免在制备过程中，所述阴极抑制层102的制备材料落入所述像素开口106a内，致使位于所述像素开口106a内的所述发光层1072上无法形成满足要求的阴极，影响所述发光器件的发光性能。进一步地，所述第二顶面1022a和与之相邻的所述像素开口106a的距离大于或等于2微米且小于或等于10微米。
可选地，在所述显示面板的纵截面视角下，位于所述第三显示区100c内的所述像素开口106a的宽度大于位于所述第一显示区100a内的所述像素开口106a的宽度，以使单位面积内所述第三显示区100c的显示效果优于所述第一显示区100a的显示效果。进一步地，自所述第二显示区100b向所述第一显示区100a的方向上，所述像素开口106a的宽度逐渐减小，以实现所述第二显示区100b至所述第一显示区100a显示过渡。
可选地，所述偏光片104经激光烧结工艺处理形成所述第一透光部1041和所述第二透光部1042，或所述偏光片104经激光切割工艺形成多个过孔，对应位于所述第一显示区100a内的所述过孔处形成所述第一透光部1041，对应位于所述第三显示区100c内的所述过孔形成所述第二透光部1042，或所述偏光片104经激光切割工艺在所述第一显示区100a和所述第三显示区100c内形成多个过孔，并在所述过孔内填充透明有机材料分别形成所述第一透光部1041和所述第二透光部1042。
可选地，所述偏光片104包括层叠设置的保护膜、支撑膜、偏光功能膜、支撑膜、压敏胶及离型膜。进一步地，所述偏光片104还包括相位延迟膜。其中，所述保护膜用于保护所述偏光功能膜不受外力损伤；所述支撑膜用于支撑所述偏光功能膜，并保护所述偏光功能膜不受水汽、紫外线等损害，所述支撑膜的制备材料包括三醋酸纤维素(Triacetyl Cellulose，TAC)。所述偏光功能膜在吸附具有二向色性染料分子（如碘分子）后形成偏振性能，所述偏光功能膜的制备材料包括聚乙烯醇(Polyvinyl Alcohol，PVA)。所述压敏胶用于实现所述偏光片104的贴附；所述离型膜用于保护所述压敏胶不受损伤，避免在贴附所述偏光片104时出现气泡。
在采用激光烧结工艺对所述偏光片104进行处理时，激光的高能量会打破所述偏光功能层上二向吸收物质分子的排序，从而在所述偏光片104中形成不具有偏光功能的所述第一透光部1041和所述第二透光部1042。可选地，采用激光烧结工艺处理形成所述第一透光部1041和所述第二透光部1042时，激光的波长可为532纳米，能量可为14W、18W或22W，时长为皮秒级。
可选地，在俯视视角下，所述第一透光部1041的形状与所述第一阴极抑制部1021的形状相同，所述第二透光部1042的形状和所述第二阴极抑制部1022的形状相同。其中，所述第一透光部1041和所述第二透光部1042的形状不限于圆形、矩形、圆角矩形、椭圆形等形状。
可选地，所述驱动阵列层108包括多个像素驱动电路，驱动位于所述第一显示区100a的所述发光器件发光的所述像素驱动电路位于所述第三显示区100c内，所述显示面板还包括位于所述第三金属层1087和所述平坦层1088之间的第三绝缘层1089和连接走线1080，所述像素驱动电路通过所述连接走线1080与对应的所述发光器件电性连接，如图1B所示。
请继续参阅图5是本申请实施例提供的显示面板的制备流程图，本申请还提供一种显示面板的制备方法，用于制备任一上述的显示面板。具体地，所述显示面板包括第一显示区及位于所述第一显示区外围的第二显示区，所述第一显示区包括相邻的第一透光区和第一发光区，所述显示面板的制备方法包括以下步骤：
步骤S10：提供一衬底，在所述衬底上制备阴极抑制层。其中，所述阴极抑制层包括位于所述第一透光区内的第一阴极抑制部。
步骤S20：在所述衬底及所述阴极抑制层上制备阴极。其中，所述阴极位于所述第一发光区和所述第一透光区内并覆盖至少部分所述第一阴极抑制部，所述阴极抑制层的透光率大于所述阴极的透光率，即使得所述第一阴极抑制部的透光率大于所述阴极的透光率；所述阴极与所述第一阴极抑制部之间的结合力小于所述阴极与所述第一发光区内的位于所述阴极之下且与所述阴极接触的膜层之间的结合力。
步骤S30：在所述阴极及所述阴极抑制层上制备偏光片。其中，所述偏光片包括位于所述第一透光区内的第一透光部，所述第一透光部位于所述第一阴极抑制部的上方，所述第一透光部在所述衬底上的正投影位于所述第一阴极抑制部在所述衬底上的正投影的边界内。
可选地，所述阴极抑制层可采用高精度金属掩膜板及蒸镀工艺制备于所述衬底上；所述阴极采用开口掩膜板及蒸镀工艺制备于所述衬底上。所述偏光片经激光烧结工艺处理形成所述第一透光部，或所述偏光片经激光切割工艺形成多个过孔，每一所述过孔内填充透明有机材料形成所述第一透光部。
所述阴极的制备材料包括金属镁，所述阴极抑制层的制备材料包括透光材料。具体地，所述阴极抑制层102的制备材料包括BAlq(双(2-甲基-8-羟基喹啉)-4-(对苯基苯酚)合铝)、TAZ(3-(联苯-4-基)-5-(4-叔丁基苯基)-4-苯基-4H-1,2,4-三唑)及OTI（氧化铟）中的至少一种。
在所述衬底上制备阴极抑制层之前，还包括：
步骤S11：在所述衬底上制备驱动阵列层及阳极。其中，在俯视视角下，所述阳极在所述衬底上的正投影与所述阴极抑制层在所述衬底上的正投影无重叠。
步骤S12：在所述驱动阵列层上及所述阳极上制备像素定义层。其中，所述像素定义层包括多个像素开口，所述像素开口暴露出所述阳极。
步骤S13：在所述像素定义层及所述阳极上采用开口掩膜板及蒸镀工艺制备第二辅助层。
步骤S14：在所述第二辅助层上采用高精度金属掩膜板及蒸镀工艺制备发光层。其中，所述发光层位于所述像素开口内。
步骤S15：在所述发光层及所述第二辅助层上采用开口掩膜板及蒸镀工艺制备第一辅助层。
进一步地，所述显示面板还包括位于所述第一显示区和所述第二显示区之间的第三显示区，所述第三显示区包括相邻的第二透光区和第二发光区。在所述显示面板的制备方法的所述步骤S10中，所述阴极抑制层还包括位于所述第二透光区内的第二阴极抑制部。在所述步骤S20中，所述阴极还位于所述第二发光区及所述第二透光区内并覆盖至少部分所述第二阴极抑制部，所述阴极与所述第二阴极抑制部之间的结合力小于所述阴极与所述第二发光区内的位于所述阴极之下且与所述阴极接触的膜层之间的结合力。在所述步骤S30中，所述偏光片还包括位于所述第二透光区内的第二透光部，所述第二透光部位于所述第二阴极抑制部的上方，所述第二透光部在所述衬底上的正投影位于所述第二阴极抑制部在所述衬底上的正投影的边界内。所述偏光片经激光烧结工艺处理形成所述第二透光部，或所述偏光片经激光切割工艺在所述第三显示区内形成多个过孔，每一所述过孔内填充透明有机材料形成所述第二透光部。
本申请还提供一种显示装置，所述显示装置包括任一上述的显示面板或如所述的显示面板制备方法制备得到的显示面板。
其中，所述显示面板包括固定终端（如电视、台式电脑等），移动终端（如手机、笔记本电脑等），以及可穿戴设备（如手环、虚拟显示设备、增强显示设备等）等。
本文中应用了具体个例对本申请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申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，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申请的限制。

Claims (20)

  1. 一种显示面板，其中，包括第一显示区和位于所述第一显示区外围的第二显示区，所述第一显示区的透光率大于所述第二显示区的透光率，所述第一显示区包括相邻的第一透光区和第一发光区；所述显示面板包括：
    衬底；
    阴极抑制层，设于所述衬底上，且包括位于所述第一透光区内的第一阴极抑制部；
    阴极，位于所述第一发光区和所述第一透光区内并覆盖至少部分所述第一阴极抑制部；以及，
    偏光片，位于所述阴极上，包括位于所述第一透光区内的第一透光部，所述第一透光部位于所述第一阴极抑制部的上方；
    其中，所述第一透光部在所述衬底上的正投影位于所述第一阴极抑制部在所述衬底上的正投影的边界内。
  2. 根据权利要求1所述的显示面板，其中，所述第一阴极抑制部包括第一顶面、与所述第一顶面相对的第一底面、及连接于所述第一顶面和所述第一底面之间的第一侧面，所述第一底面朝向所述衬底，所述第一顶面朝向所述偏光片；其中，所述阴极覆盖所述第一侧面的至少部分。
  3. 根据权利要求2所述的显示面板，其中，所述阴极覆盖所述第一侧面的一部分，所述第一阴极抑制部与所述阴极具有第一交界，所述第一透光部在所述第一底面上的正投影位于所述第一交界在所述第一底面上的正投影内。
  4. 根据权利要求2所述的显示面板，其中，所述第一顶面在所述第一底面上的正投影位于所述第一底面的边界内，所述第一侧面与所述第一底面之间的夹角为锐角。
  5. 根据权利要求3所述的显示面板，其中，所述第一透光部的靠近所述衬底的部分在所述第一底面上的正投影位于所述第一透光部的远离所述衬底的部分在所述第一底面上的正投影内，所述第一顶面在所述第一底面上的正投影位于所述第一透光部的靠近所述衬底的部分在所述第一底面上的正投影内，所述第一透光部的远离所述衬底的部分在所述第一底面上的正投影位于所述第一交界在所述第一底面上的正投影内。
  6. 根据权利要求1所述的显示面板，其中，还包括位于所述第一显示区和所述第二显示区之间的第三显示区，所述第三显示区的透光率小于所述第一显示区的透光率且大于所述第二显示区的透光率，所述第三显示区包括相邻的第二透光区和第二发光区；其中，所述阴极抑制层还包括位于所述第二透光区内的第二阴极抑制部；所述阴极位于所述第二发光区和所述第二透光区内并覆盖至少部分所述第二阴极抑制部；所述偏光片还包括位于所述第二透光区内的第二透光部，所述第二透光部位于所述第二阴极抑制部的上方，所述第二透光部在所述衬底上的正投影位于所述第二阴极抑制部在所述衬底上的正投影的边界内。
  7. 根据权利要求6所述的显示面板，其中，在所述显示面板的纵截面视角下，所述第一透光部的宽度大于所述第二透光部的宽度，所述第一阴极抑制部的宽度大于所述第二阴极抑制部的宽度。
  8. 根据权利要求7所述的显示面板，其特征在于，在所述显示面板的纵截面视角下，所述第二阴极抑制部的宽度在自所述第二显示区至所述第一显示区的方向上逐渐增大。
  9. 根据权利要求6所述的显示面板，其中，所述第一阴极抑制部在所述第一显示区内的分布数量大于或等于所述第二阴极抑制部在所述第三显示区内的分布数量的2倍。
  10. 根据权利要求6所述的显示面板，其中，所述第二阴极抑制部包括第二顶面、与所述第二顶面相对的第二底面、及连接于所述第二顶面与所述第二底面之间的第二侧面，所述第二底面朝向所述衬底，所述第二顶面朝向所述偏光片；其中，所述阴极覆盖所述第二侧面的至少部分。
  11. 根据权利要求10所述的显示面板，其中，所述阴极覆盖所述第二侧面的一部分，所述第二顶面在所述第二底面上的正投影位于所述第二底面的边界内，所述第二侧面与所述第二底面之间的夹角为锐角，所述第二阴极抑制部与所述阴极具有第二交界，所述第二透光部在所述第二底面上的正投影位于所述第二交界在所述第二底面上的正投影内。
  12. 根据权利要求11所述的显示面板，其中，所述第二透光部的靠近所述衬底的部分在所述第二底面上的正投影位于所述第二透光部的远离所述衬底的部分在所述第二底面上的正投影内，所述第二顶面在所述第二底面上的正投影位于所述第二透光部的靠近所述衬底的部分在所述第二底面上的正投影内，所述第二透光部的远离所述衬底的部分在所述第二底面上的正投影位于所述第二交界在所述第二底面上的正投影内。
  13. 根据权利要求6所述的显示面板，其中，位于所述第一阴极抑制部上的所述阴极的厚度小于位于所述第一发光区的所述阴极的厚度，位于所述第二阴极抑制部上的所述阴极的厚度小于位于所述第二发光区的所述阴极的厚度。
  14. 根据权利要求13所述的显示面板，其特征在于，在自所述第二显示区至所述第一显示区的方向上，位于所述第二阴极抑制部上的所述阴极的厚度逐渐减小。
  15. 根据权利要求6所述的显示面板，其特征在于，所述阴极覆盖所述第一阴极抑制部的面积小于所述阴极覆盖所述第二阴极抑制部的面积。
  16. 根据权利要求4所述的显示面板，其中，还包括位于所述衬底上的像素定义层，所述像素定义层在所述第一透光区内设有多个像素开口；其中，在所述显示面板的纵截面视角下，所述第一顶面距相邻的所述像素开口的距离大于或等于2微米且小于或等于10微米。
  17. 一种显示装置，其中，包括显示面板，所述显示面板包括第一显示区和位于所述第一显示区外围的第二显示区，所述第一显示区的透光率大于所述第二显示区的透光率，所述第一显示区包括相邻的第一透光区和第一发光区；所述显示面板包括：
    衬底；
    阴极抑制层，设于所述衬底上，且包括位于所述第一透光区内的第一阴极抑制部；
    阴极，位于所述第一发光区和所述第一透光区内并覆盖至少部分所述第一阴极抑制部；以及，
    偏光片，位于所述阴极上，包括位于所述第一透光区内的第一透光部，所述第一透光部位于所述第一阴极抑制部的上方；
    其中，所述第一透光部在所述衬底上的正投影位于所述第一阴极抑制部在所述衬底上的正投影的边界内。
  18. 根据权利要求17所述的显示装置，其中，所述第一阴极抑制部包括第一顶面、与所述第一顶面相对的第一底面、及连接于所述第一顶面和所述第一底面之间的第一侧面，所述第一底面朝向所述衬底，所述第一顶面朝向所述偏光片；其中，所述阴极覆盖所述第一侧面的一部分，所述第一阴极抑制部与所述阴极具有第一交界，所述第一透光部在所述第一底面上的正投影位于所述第一交界在所述第一底面上的正投影内。
  19. 根据权利要求17所述的显示装置，其中，所述显示面板还包括位于所述第一显示区和所述第二显示区之间的第三显示区，所述第三显示区的透光率小于所述第一显示区的透光率且大于所述第二显示区的透光率，所述第三显示区包括相邻的第二透光区和第二发光区；其中，所述阴极抑制层还包括位于所述第二透光区内的第二阴极抑制部；所述阴极位于所述第二发光区和所述第二透光区内并覆盖至少部分所述第二阴极抑制部；所述偏光片还包括位于所述第二透光区内的第二透光部，所述第二透光部位于所述第二阴极抑制部的上方，所述第二透光部在所述衬底上的正投影位于所述第二阴极抑制部在所述衬底上的正投影的边界内。
  20. 根据权利要求19所述的显示装置，其中，在所述显示面板的纵截面视角下，所述第一透光部的宽度大于所述第二透光部的宽度，所述第一阴极抑制部的宽度大于所述第二阴极抑制部的宽度。
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