WO2021164582A1 - 显示面板、显示方法、显示装置及有机发光子像素的制作方法 - Google Patents

显示面板、显示方法、显示装置及有机发光子像素的制作方法 Download PDF

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WO2021164582A1
WO2021164582A1 PCT/CN2021/075590 CN2021075590W WO2021164582A1 WO 2021164582 A1 WO2021164582 A1 WO 2021164582A1 CN 2021075590 W CN2021075590 W CN 2021075590W WO 2021164582 A1 WO2021164582 A1 WO 2021164582A1
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light
emitting
brightness
base substrate
organic light
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PCT/CN2021/075590
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English (en)
French (fr)
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金广
孔超
赵明
卿万梅
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京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Priority to US17/432,280 priority Critical patent/US20220310737A1/en
Publication of WO2021164582A1 publication Critical patent/WO2021164582A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/13—Active-matrix OLED [AMOLED] displays comprising photosensors that control luminance
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • 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
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] 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
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/852—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/854—Arrangements for extracting light from the devices comprising scattering means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/856—Arrangements for extracting light from the devices comprising reflective means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/877—Arrangements for extracting light from the devices comprising scattering means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/878—Arrangements for extracting light from the devices comprising reflective means
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2101/00—Properties of the organic materials covered by group H10K85/00
    • H10K2101/10—Triplet emission
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/351—Thickness
    • 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

Definitions

  • This application relates to the field of display technology, and in particular to a display panel, a display method, a display device, and a manufacturing method of organic light-emitting sub-pixels.
  • OLED display panels have many advantages such as self-luminescence, low driving voltage, high contrast, and short response time, and have been widely used in display fields such as smart phones.
  • the purpose of this application is to provide a display panel, a display method, a display device and a manufacturing method of organic light-emitting sub-pixels, which have the characteristics of long service life and excellent display effect.
  • the first aspect of the present disclosure provides a display panel, which includes:
  • the pixel structure includes a plurality of organic light-emitting sub-pixels with different light-emitting colors.
  • the organic light-emitting sub-pixels include a main light-emitting portion, an auxiliary light-emitting portion, and a The microstructures of the main light-emitting portion and the auxiliary light-emitting portion, the main light-emitting portion and the auxiliary light-emitting portion of the same organic light-emitting sub-pixel are independently driven and have the same light emission color, and the main light-emitting portion and the auxiliary light-emitting portion
  • the light emitted by the light-emitting part is emitted through the microstructure; wherein the initial brightness of the organic light-emitting sub-pixel is the initial brightness of the main light-emitting part;
  • the control structure is used for controlling the brightness of the auxiliary light-emitting portion according to the brightness of the main light-emitting portion to compensate the brightness of the main light-emitting portion so that the brightness of the organic light-emitting sub-pixel remains consistent with its initial brightness.
  • the microstructure includes a transparent main body and a reflective layer, wherein
  • the transparent main body has a light incident surface close to the base substrate, a light exit surface far away from the base substrate, and a side connecting surface connecting the light incident surface and the light exit surface;
  • the reflective layer is formed on the side connecting surface, and the orthographic projection of the reflective layer on the base substrate coincides with the orthographic projection of the side connecting surface on the base substrate.
  • the microstructure further includes a scattering layer, the scattering layer is formed on the light exit surface, and the orthographic projection of the scattering layer on the base substrate is consistent with that of the scattering layer.
  • the orthographic projections of the light-emitting surface on the base substrate coincide.
  • the main light-emitting portion includes a first organic light-emitting layer, and the auxiliary light-emitting portion includes a second organic light-emitting layer;
  • the orthographic projections of the first organic light-emitting layer of the main light-emitting portion and the second organic light-emitting layer of the auxiliary light-emitting portion on the base substrate are both located at all
  • the light incident surface of the transparent main body is in an orthographic projection on the base substrate;
  • the orthographic projection of the light-emitting surface of the transparent main body portion on the base substrate is located in a central area of the orthographic projection of the light-incident surface of the transparent main body portion on the base substrate.
  • the light-emitting surface of the transparent main body is a plane parallel to the base substrate;
  • the side connecting surface of the transparent main body portion is an inclined plane whose extending direction intersects the base substrate and is inclined toward the light-emitting surface, or the side connecting surface of the transparent main body portion is facing away from the transparent main body portion Curved surface with convex center.
  • the orthographic projection of the light-emitting surface of the transparent main body portion on the base substrate and the orthographic projection of the first organic light-emitting layer of the main body portion on the base substrate have a first overlapping area
  • the area of the first overlapping area is equal to the area of the second overlapping area.
  • the shape of the first overlapping area is the same as the shape of the second overlapping area.
  • the shape and size of the orthographic projection of the first organic light-emitting layer of the main light-emitting portion on the base substrate are the same as those of the second organic light-emitting portion of the auxiliary light-emitting portion.
  • the shape and size of the orthographic projection of the layers on the base substrate are the same;
  • the shape and size of the orthographic projection of the light-emitting surface of the transparent main body portion on the base substrate and the orthographic projection of the second organic light-emitting layer of the auxiliary light-emitting portion on the base substrate Same shape and size.
  • the thickness of the scattering layer is greater than or equal to the thickness of the reflective layer.
  • the transmittance of the transparent main body to visible light is greater than or equal to 85%
  • the reflectivity of the reflective layer to visible light is greater than or equal to 95%
  • the scattering layer is greater than or equal to 95% of visible light.
  • the transmittance is greater than or equal to 85%.
  • the transparent body portion includes a polymer material;
  • the reflective layer includes at least one of a metal material and a metal oxide material;
  • the scattering layer includes a nitride material, an oxide material At least one of a physical material and a polymer material.
  • the refractive index of the microstructure ranges from 1.5 to 2.0.
  • control structure includes:
  • An obtaining unit configured to obtain the initial brightness of the organic light-emitting sub-pixel
  • a determining unit configured to determine the brightness of the main light-emitting part according to the working time
  • a calculation unit configured to calculate the difference between the initial brightness of the organic light-emitting sub-pixel and the brightness of the main light-emitting part
  • the adjusting unit is configured to adjust the brightness of the auxiliary light-emitting portion to the difference between the initial brightness of the organic light-emitting sub-pixel and the brightness of the main light-emitting portion.
  • a second aspect of the present disclosure provides a display method, which is applied to the display panel of any one of the above, wherein the display method includes:
  • the initial brightness of the organic light-emitting sub-pixel is the initial brightness of the main light-emitting part.
  • controlling the brightness of the auxiliary light-emitting portion according to the brightness of the main light-emitting portion includes:
  • the brightness of the auxiliary light-emitting portion is adjusted to the difference between the initial brightness of the organic light-emitting sub-pixel and the brightness of the main light-emitting portion.
  • a third aspect of the present disclosure provides a display device, which includes the display panel described in any one of the above.
  • a fourth aspect of the present disclosure provides a method for manufacturing an organic light-emitting sub-pixel, which includes:
  • main light-emitting part and an auxiliary light-emitting part Forming a main light-emitting part and an auxiliary light-emitting part on the sub-pixel area of the base substrate, the main light-emitting part and the auxiliary light-emitting part are independently driven and have the same light-emitting color;
  • the light emitted by the main light-emitting portion and the auxiliary light-emitting portion is emitted through the microstructure;
  • the initial brightness of the organic light-emitting sub-pixel is the initial brightness of the main light-emitting portion;
  • the brightness of the auxiliary light-emitting portion can be The brightness of the main light-emitting part is compensated so that the brightness of the organic light-emitting sub-pixel remains consistent with its initial brightness.
  • the forming a microstructure covering the main light-emitting part and the auxiliary light-emitting part on the base substrate includes:
  • a transparent body part covering the main light-emitting part and the auxiliary light-emitting part is formed on the base substrate, the transparent body part has a light incident surface close to the base substrate, and a light exiting away from the base substrate Surface, and a side connecting surface connecting the light-incident surface and the light-emitting surface;
  • a reflective layer is formed on the side connection surface of the transparent main body, and the orthographic projection of the reflective layer on the base substrate coincides with the orthographic projection of the side connection surface on the base substrate.
  • the forming a microstructure covering the main light-emitting part and the auxiliary light-emitting part on the base substrate further includes:
  • the scattering layer is attached to the light-emitting surface of the transparent main body, and the orthographic projection of the scattering layer on the base substrate and the light-emitting surface are on the substrate.
  • the orthographic projections on the substrate coincide.
  • forming a transparent main body part covering the main light-emitting part and the auxiliary light-emitting part on the base substrate includes:
  • the polymer solution is baked to form the transparent main body.
  • forming a reflective layer on the side connection surface of the transparent main body portion includes:
  • a metal material is deposited on the side connection surface of the transparent main body by evaporation to form a reflective layer.
  • the display panel, the display method, the display device, and the manufacturing method of the organic light-emitting sub-pixel provided by the present application are provided by the organic light-emitting sub-pixel with an auxiliary light-emitting portion, and the control structure controls the auxiliary light-emitting portion according to the brightness of the main light-emitting portion Brightness, the brightness of the auxiliary light-emitting portion can be used to compensate the brightness of the main light-emitting portion, so that the brightness of the organic light-emitting sub-pixel is consistent with its initial brightness, which can prolong the service life of the display panel and improve the display effect.
  • FIG. 1 shows a schematic plan view of a display panel shown in an embodiment of the present application
  • FIG. 2a shows a schematic cross-sectional view of a base substrate and organic light-emitting sub-pixels in a display panel shown in an embodiment of the present application;
  • FIG. 2b shows a schematic cross-sectional view of a base substrate and organic light-emitting sub-pixels in a display panel shown in another embodiment of the present application;
  • FIG. 3 shows a schematic diagram of a brightness attenuation curve of a main light-emitting part of an organic light-emitting sub-pixel in a display panel shown in an embodiment of the present application;
  • FIG. 4 shows a schematic diagram of the auxiliary light-emitting portion of the organic light-emitting sub-pixel in the display panel shown in an embodiment of the present application changing with the operating time of the organic light-emitting sub-pixel;
  • FIG. 5 shows a schematic diagram of the brightness of the organic light-emitting sub-pixel changing with its working time after the brightness of the main light-emitting part is compensated by the auxiliary light-emitting part in the display panel shown in an embodiment of the present application;
  • FIG. 6 shows a schematic cross-sectional view of a base substrate and organic light-emitting sub-pixels in a display panel shown in another embodiment of the present application;
  • FIG. 7 shows a schematic diagram of a light path propagation path of an organic light-emitting sub-pixel in a display panel shown in another embodiment of the present application
  • FIG. 8 shows a flowchart of a manufacturing method of a microstructure of an organic light-emitting sub-pixel in a display panel shown in an embodiment of the present application
  • FIG. 9 shows a structural block diagram of a control structure in a display panel shown in an embodiment of the present application.
  • FIG. 10 shows a flowchart of a display method of a display panel shown in an embodiment of the present application
  • FIG. 11 shows a flowchart of a display method of a display panel shown in another embodiment of the present application.
  • FIG. 12 shows a schematic cross-sectional view of the transparent main body in the microstructure shown in an embodiment of the present application
  • FIG. 13 shows a schematic cross-sectional view of a transparent main body in a microstructure shown in another embodiment of the present application
  • FIG. 14 shows a schematic diagram of the positional relationship between the microstructure shown in an embodiment of the present application and the orthographic projection of the first organic light-emitting layer and the second organic light-emitting layer on the base substrate;
  • Figure 15 shows a schematic structural diagram for completing step S1;
  • FIG. 16 shows a schematic structural diagram for completing step S21
  • FIG. 17 shows a schematic structural diagram for completing step S22.
  • a structure When a structure is “on” another structure, it may mean that a certain structure is integrally formed on other structures, or that a certain structure is “directly” installed on other structures, or that a certain structure is “indirectly” installed on other structures through another structure. On other structures.
  • the terms “a”, “a”, and “the” are used to indicate the presence of one or more elements/components/etc; In addition to the listed elements/components/etc., there may be additional elements/components/etc.
  • the terms “first” and “second” are only used as markers, and are not a restriction on the number of objects.
  • An embodiment of the present application provides a display panel, as shown in FIG. 1, which includes a base substrate 1, a plurality of pixel structures arranged in an array on the base substrate 1, and a control structure 3, wherein:
  • the base substrate 1 can be a single-layer structure or a multi-layer structure. And the base substrate 1 can be flexible, so that the display panel can be bent, curled, etc., to improve the application scenarios of the display panel, but not limited to this, the base substrate 1 can also be rigid, which can be modified according to actual needs. Certainly.
  • Each pixel structure may include a plurality of organic light-emitting sub-pixels 2 with different light-emitting colors, for example, the red (R) sub-pixel, the green (G) sub-pixel, and the blue (B) sub-pixel shown in FIG. 1, in other words ,
  • the pixel structure of the present disclosure is composed of three sub-pixels of R, G, and B; but not limited to this, the pixel structure of the present disclosure may also be composed of three sub-pixels of R, G, B, and B; in addition, the pixel structure is not limited to R
  • the luminous colors of, G, and B can also include other luminous colors, such as yellow.
  • the shape of the R sub-pixel and the B sub-pixel is not limited to the rectangle shown in the figure, but may also be a circle, an ellipse, a diamond or other polygons, etc., depending on the specific situation; and the G sub-pixel
  • the shape of the pixel is not limited to the circle shown in the figure, but may also be an ellipse, rectangle, rhombus or other polygons, etc., depending on the specific situation.
  • the actual light-emitting areas of the three sub-pixels of R, G, and B can be 3600um 2 , 4572um 2 , 5929um 2 , and R, G
  • the actual light-emitting area ratio of the three sub-pixels B can be 1: 1.27: 1.47.
  • the shapes of the three sub-pixels of R, G, and B can be square, circular, diamond, elliptical, etc. The specific shape, light emitting area, and ratio are determined according to the requirements of the display product.
  • the organic light-emitting sub-pixel 2 is an OLED sub-pixel. Since the brightness of the OLED sub-pixel will decrease with the working time, this will easily lead to the problem of poor display effect and short service life.
  • the structure of the organic light-emitting sub-pixel 2 is improved in this embodiment.
  • the improved organic light-emitting sub-pixel 2 may specifically include a main light-emitting portion 2a and an auxiliary light-emitting portion.
  • this microstructure 2c covers the main light-emitting portion 2a and the auxiliary light-emitting portion 2b, the coverage mentioned here refers to the orthographic projection of the microstructure 2c on the base substrate 1 and the main light-emitting portion 2a and auxiliary light-emitting At least part of the orthographic projection of the portion 2b on the base substrate 1 overlaps; the main light-emitting portion 2a and the auxiliary light-emitting portion 2b are driven independently, and the light-emitting colors of the main light-emitting portion 2a and the auxiliary light-emitting portion 2b are the same.
  • the light emitted by the part 2a and the auxiliary light-emitting part 2b can be emitted through the microstructure 2c; the brightness of the light emitted by the organic light-emitting sub-pixel 2 is L, and the initial brightness of the organic light-emitting sub-pixel 2 is L0, and the light emitted by the main light-emitting part 2a
  • the brightness of the light is L1
  • the brightness of the light emitted by the auxiliary light-emitting portion 2b is L2
  • the brightness L of the light emitted by the organic light-emitting sub-pixel 2 is determined by the brightness L1 of the light emitted by the main light-emitting portion 2a and the brightness of the light emitted by the auxiliary light-emitting portion 2b.
  • the superposition of L2, namely: L L1+L2, it should be noted that the L, L1, and L2 mentioned in this embodiment are all measured at the light exit of the microstructure 2c.
  • the initial brightness L0 of the organic light-emitting sub-pixel 2 can be the initial brightness of the main light-emitting portion 2a, that is, when the display panel first displays, the main light-emitting portion 2a in the organic light-emitting sub-pixel 2 works independently; The brightness of the part 2a will attenuate as the working time increases.
  • the attenuation curve diagram of the main light-emitting part 2a is shown in FIG. 3, and the ordinate in FIG.
  • the ratio of L0, the abscissa is the operating time T of the organic light-emitting sub-pixel 2. Since the main light-emitting portion 2a starts to work at the beginning of display, the operating time T of this organic light-emitting sub-pixel 2 can also be the main light-emitting portion 2a Working hours.
  • the auxiliary light-emitting portion 2b can be used to protect the main light-emitting portion 2a.
  • Luminous brightness is compensated; specifically, the brightness L2 of the auxiliary light-emitting portion 2b can be controlled according to the brightness L1 of the main light-emitting portion 2a through the control structure 3 in FIG.
  • the brightness L is consistent with its initial brightness L0. This design greatly prolongs the service life of the display panel and improves the display effect, which greatly expands the application field of the display panel.
  • the brightness L2 of the auxiliary light-emitting part 2b changes with the working time of the organic light-emitting sub-pixel 2 as shown in FIG. 4, the ordinate in FIG.
  • the ratio, the abscissa is the working time T of the light-emitting sub-pixel.
  • the brightness L of the organic light-emitting sub-pixel 2 varies with the operating time of the organic light-emitting sub-pixel 2 as shown in FIG. 5, in FIG.
  • the ordinate is the ratio of the luminance L of the organic light-emitting sub-pixel 2 to the initial luminance L0 of the organic light-emitting sub-pixel 2
  • the abscissa is the operating time T of the organic light-emitting sub-pixel.
  • the organic light-emitting sub-pixel 2 may include a driving circuit layer, an anode layer, an organic light-emitting material layer, a cathode layer 23, and an encapsulation layer 24 stacked on the base substrate 1 in sequence; wherein, the driving circuit layer may include The first driving transistor 20a and the second driving transistor 20b.
  • the first driving transistor 20a and the second driving transistor 20b each include an active layer 200, a gate insulating layer 201, a gate 202, a source electrode 203 and a drain electrode 204; an anode layer It may include a first anode 21a and a second anode 21b that are provided independently of each other.
  • the first anode 21a may be connected to the drain electrode 204 of the first driving transistor 20a, and the second anode 21b may be connected to the drain electrode 204 of the second driving transistor 20b.
  • the organic light-emitting material layer includes a pixel defining layer 22c, a first organic light emitting layer 22a and a second organic light emitting layer 22b, the pixel defining layer 22c has a first pixel opening opposite to the first anode 21a and a first pixel opening opposite to the second anode 21b
  • Two pixel openings namely: the orthographic projection of the first pixel opening on the base substrate 1 is located within the orthographic projection of the first anode 21a on the base substrate 1, and the orthographic projection of the second pixel opening on the base substrate 1 is located on the first
  • the two anodes 21b are in the orthographic projection on the base substrate 1; the first organic light-emitting layer 22a is located in the first pixel opening and is in contact with the first anode 21a, and the
  • the cathode layer 23 is a whole-layer structure, and the cathode layer 23 is in contact with the first organic light-emitting layer 22a and the second organic light-emitting layer 22b; the encapsulation layer 24 is a whole-layer structure and covers the entire cathode layer 23.
  • the first driving transistor 20a, the first anode 21a, the first organic light-emitting layer 22a, the cathode layer 23, and the encapsulation layer 24 constitute the main light-emitting part 2a; the second driving transistor 20b, the second anode 21b, and the second organic light-emitting layer 22b
  • the cathode layer 23 and the encapsulation layer 24 constitute the auxiliary light-emitting part 2b.
  • the color of the first organic light-emitting layer 22a is the same as the color of the second organic light-emitting layer 22b to ensure that the light-emitting colors of the main light-emitting portion 2a and the auxiliary light-emitting portion 2b are the same.
  • the brightness of the main light-emitting portion 2a is determined by the signal provided by the first driving transistor 20a
  • the brightness of the auxiliary light-emitting portion 2b is determined by the signal provided by the second driving transistor 20b.
  • the light-emitting area of the main light-emitting portion 2a of the same organic light-emitting sub-pixel 2 can be equal to the light-emitting area of the auxiliary light-emitting portion 2b to ensure the display effect, but it is not limited to this, depending on the specific situation.
  • the shape and size of the orthographic projection of the first organic light-emitting layer 22a of the main light-emitting portion 2a on the base substrate 1 and the second organic light-emitting layer 22b of the auxiliary light-emitting portion 2b are the same, so that while ensuring that the light-emitting areas of the main light-emitting portion 2a and the auxiliary light-emitting portion 2b are equal, the design difficulty can also be reduced.
  • the orthographic projection shape of the first organic light-emitting layer 22a of the main light-emitting portion 2a and the second organic light-emitting layer 22b of the auxiliary light-emitting portion 2b on the base substrate 1 may be rectangular, rhombic, elliptical, circular or other shapes. Polygon, depending on the specific situation.
  • the microstructure 2c in the organic light-emitting sub-pixel 2 may include a transparent body part 25 and a reflective layer 26.
  • the transparent body part 25 has a substrate close to the substrate.
  • the light-incident surface 250 of the substrate 1, the light-emitting surface 251 away from the base substrate 1, and the side connection surface 252 connecting the light-incident surface 250 and the light-emitting surface 251; and the reflective layer 26 may be formed on the side connection surface, as shown in FIG. 2a, 2b and 6; the orthographic projection of the reflective layer 26 on the base substrate 1 can coincide with the orthographic projection of the side connection surface 252 of the transparent main body 25 on the base substrate 1.
  • the light incident surface 250 of the transparent main body 25 may be a flat surface as shown in FIGS. 12 and 13, but is not limited to this, and the light incident surface 250 of the transparent main body 25 may also be uneven. , Specifically adapted to the shape of the underlying film layer, for example: the part of the encapsulation layer 24 shown in FIG. When the layers 24 are in contact, the light incident surface 250 of the transparent main body 25 may also be uneven.
  • the orthographic projection of the light incident surface 250 of the transparent main body portion 25 on the base substrate 1 can cover the first organic light emitting layer 22a and the second organic light emitting layer 22b
  • the coverage here means that the orthographic projection of the light-incident surface 250 of the transparent body 25 on the base substrate 1 can be at least the same as the orthographic projection of the first organic light-emitting layer 22a and the second organic light-emitting layer 22b on the base substrate.
  • the orthographic projections of the first organic light-emitting layer 22a of the main light-emitting portion 2a and the second organic light-emitting layer 22b of the auxiliary light-emitting portion 2b on the base substrate 1 are equal
  • the light-incident surface 250 of the transparent main body part 25 is in the orthographic projection on the base substrate 1, so as to ensure that the light emitted by the main light-emitting part 2a and the light emitted by the auxiliary light-emitting part 2b can completely pass from the microstructure 2c.
  • the transparent main body The light incident surface 250 of the part 25 enters the transparent body part 25, part of the light can be directly emitted through the light exit surface 251 of the transparent body part 25, and another part of the light irradiates the reflective layer 26 and can be reflected back to the transparent body part 25 by the reflective layer 26 Then, it is finally emitted through the light-emitting surface, that is, the light emitted by the first organic light-emitting layer 22a and the second organic light-emitting layer 22b is only emitted through the light-emitting surface of the microstructure 2c.
  • This design allows the light to be emitted from a region. , To ensure the display brightness of the organic light-emitting sub-pixel 2.
  • the area of the light-emitting surface 251 of the transparent main body portion 25 of the microstructure 2c may be the actual light-emitting area of the entire organic light-emitting sub-pixel 2, and the size of the light-emitting surface is specifically determined according to actual requirements.
  • the light-emitting surface may be located in the central area of the microstructure 2c, that is, the orthographic projection of the light-emitting surface 251 of the transparent main body 25 on the base substrate 1 is located on the light-incident surface 250 of the transparent main body 25 on the base substrate 1.
  • the central area of the orthographic projection; and the side connecting surface can be arranged around the light emitting surface, and the two ends of the side connecting surface are respectively connected with the edge of the light incident surface and the edge of the light emitting surface, and the entire transparent main body 25 is an integrated structure.
  • the light-emitting surface 251 of the transparent body portion 25 may be a plane parallel to the base substrate 1.
  • the light-emitting surface 251 of the transparent body portion 25 may be a plane parallel to the base substrate 1.
  • the thickness direction of the base substrate is perpendicular to the plane. Compared with the solution that the light exit surface is an inclined surface or arc surface, this design can reduce the overall thickness of the transparent main body 25 and reduce light loss while ensuring the light exit area.
  • the light-emitting surface 251 of the transparent main body 25 may also be a curved surface with a slight curvature, depending on specific product requirements.
  • the side connecting surface 252 of the transparent main body portion 25 is an inclined plane whose extending direction intersects the base substrate 1 and is inclined to the light emitting surface 251; or as shown in FIG. 13, the side connecting surface 252 of the transparent main body portion 25
  • the connecting surface 252 is a curved surface that protrudes away from the center of the transparent main portion 25. This design facilitates the subsequent evaporation of the reflective layer 26 on the side connecting surface 252 and ensures the uniformity of the thickness of the reflective layer 16.
  • the orthographic projection of the light-emitting surface 251 of the transparent main body portion 25 on the base substrate 1 and the orthographic projection of the first organic light-emitting layer 22a of the main light-emitting portion 2a on the base substrate 1 are present.
  • An overlapping area, the orthographic projection of the light-emitting surface 251 of the transparent main body portion 25 on the base substrate 1 and the orthographic projection of the second organic light-emitting layer 22b of the auxiliary light-emitting portion 2b on the base substrate 1 have a second overlap area,
  • the area of the first overlapping area is equal to the area of the second overlapping area.
  • the ratio of the area of the first overlapping region to the area of the orthographic projection of the entire first organic light-emitting layer 22a on the base substrate 1 ranges from 45% to 55%, such as: 45%, 50%, 55%, etc. , Depending on the specific situation; the ratio of the area of the second overlapping area to the area of the orthographic projection of the entire second organic light-emitting layer 22b on the base substrate 1 ranges from 45% to 55%, such as: 45%, 50% , 55%, etc., depending on the specific situation.
  • the shape of the first overlapping area may be the same as the shape of the second overlapping area. While ensuring that the area of the first overlapping area and the area of the second overlapping area are equal, the design difficulty can also be reduced. It should be understood that the shape of the first overlap area and the shape of the second overlap area may also be different, and the area of the first overlap area and the area of the second overlap area may not be equal, depending on specific requirements.
  • the reflective layer 26 may include at least one of a metal material and a metal oxide material, that is, the reflective layer 26 may be made of at least one of a material or a metal oxide material;
  • the reflective layer 26 of the embodiment of the present disclosure may have a single-layer structure.
  • the reflective layer 26 is a single-layer structure, it may be made of metal materials with high reflectivity such as Al (aluminum) and Ag (silver).
  • the reflective layer 26 of the embodiment of the present disclosure can also be a multilayer composite structure, for example, the reflective layer 26 can include an indium tin oxide (ITO) film layer, an aluminum layer, and an indium tin oxide layer stacked in sequence.
  • ITO indium tin oxide
  • the reflective layer 26 can also include only one layer of aluminum layer and one layer
  • the indium tin oxide film layer, the indium tin oxide film layer may be located on the side of the aluminum layer close to or away from the transparent main body portion 25.
  • the reflectance of the reflective layer 26 to visible light in the embodiment of the present disclosure can be greater than or equal to 95% to ensure the display effect.
  • the reflective layer 26 is not limited to the aforementioned materials such as Al and Ag, and can also be other materials. Materials, as long as the reflectivity of other materials to visible light can reach greater than or equal to 95%.
  • the thickness of the reflective layer 26 of the present embodiment can range from 0.1um to 100um, such as: 0.1um, 1um, 5um, 10um, 30um, 50um, 70um, 100um, etc., but it is not limited to this.
  • the thickness of the reflective layer 26 The thickness can also be within the range of other values, depending on the specific circumstances.
  • the orthographic projection shape of the transparent main body 25 on the base substrate 1 of the embodiment of the present disclosure may be the same as or similar to the shape of the first organic light-emitting layer 22a and the second organic light-emitting layer 22b, for example:
  • the orthographic projection shape of the transparent body 25 on the base substrate 1 may be rectangle, square, rhombus or ellipse, etc.
  • the orthographic projection of the transparent body portion 25 on the base substrate 1 may be circular, rectangular, Square, rhombus, ellipse, etc., such a design ensures that the transparent main body 25 can completely cover the first organic light-emitting layer 22a and the second organic light-emitting layer 22b, while also reducing the area occupied by the transparent main body 25 as a whole. This helps to improve the resolution of the product.
  • the transparent main body part 25 may include a polymer material, that is, the transparent main body part 25 may be made of a polymer material.
  • the absorption of the light emitted by 2a and the auxiliary light-emitting part 2b is relatively small, and the light loss is reduced.
  • the transmittance of the transparent main body 25 to visible light can be greater than or equal to 85% to ensure the display effect.
  • the transparent main body 25 is not limited to the aforementioned polymer materials, and may also be other materials, as long as The transmittance of other materials to visible light can reach 85% or more.
  • the thickness of the transparent main body 25 of the present embodiment can range from 1 um to 100 um, such as: 1 um, 5 um, 10 um, 30 um, 50 um, 70 um, 100 um, etc., but it is not limited to this.
  • the thickness of the transparent main body 25 is also It can be within the range of other values, depending on the specific situation.
  • the microstructure 2c may further include a scattering layer 27.
  • the scattering layer 27 is formed on the light-emitting surface, and the scattering layer 27 is on the front surface of the base substrate 1.
  • the projection can coincide with the orthographic projection of the light-emitting surface on the base substrate 1, and the scattering layer 27 can scatter the light emitted from the light-emitting surface 251 of the transparent main body 25 to reduce the color shift of the display panel.
  • the transmittance of the scattering layer 27 to visible light may be greater than or equal to 85%.
  • the scattering layer 27 may include at least one of a nitride material, an oxide material, and a polymer material, but it is not limited to this, and may also be other materials, as long as the scattering layer 27 can be ensured while scattering is achieved.
  • the transmittance of visible light is sufficient.
  • the thickness of the scattering layer 27 of the present embodiment can range from 10um to 100000um, such as: 10um, 100um, 500um, 1000um, 5000um, 10000um, 50000um, 100000um, etc., but it is not limited to this.
  • the thickness of the scattering layer 27 is also It can be within the range of other values, depending on the specific situation.
  • the thickness of the scattering layer 27 of the embodiment of the present disclosure may be greater than the thickness of the reflective layer 26, so as to prevent the reflective layer 26 from affecting the scattering angle of the scattering layer 27 and ensure the scattering effect; optionally, the scattering
  • the thickness of the layer 27 can be greater than or equal to twice the thickness of the reflective layer 26 to further ensure the scattering effect, but it is not limited to this.
  • the thickness of the scattering layer 27 can also be greater than the thickness of the reflective layer 26 and less than twice the thickness of the reflective layer 26; in addition, As shown in FIG. 2a, the thickness of the scattering layer 27 can also be equal to the thickness of the reflective layer 26; or the thickness of the scattering layer 27 can also be slightly smaller than the thickness of the reflective layer 26, etc., depending on the specific situation.
  • the orthographic projection shape of the scattering layer 27 in the microstructure 2c on the base substrate 1 can be 77um ⁇ 77um, with an area of 5929um 2 square, and the first organic light-emitting layer 22a There is a 10 ⁇ m gap between the second organic light-emitting layer 22b and the second organic light-emitting layer 22b, and the orthographic projection shape of the first organic light-emitting layer 22a and the second organic light-emitting layer 22b on the base substrate 1 may be a rectangle with an area of 5929um 2 and 100um ⁇ 59.29um.
  • the scattering layer 27 is projected directly above the first organic light-emitting layer 22a and the second organic light-emitting layer 22b.
  • the projected area of the scattering layer 27 on the first organic light-emitting layer 22a and the second organic light-emitting layer 22b are both 2579.5um 2 , which accounts for about the first organic light emitting layer. 49% of the area of the layer 22a and the second organic light emitting layer 22b.
  • the refractive index of the microstructure 2c may range from 1.5 to 2.0, such as 1.5, 1.7, 2.0, etc., to increase the propagation speed of light, thereby reducing the main light-emitting portion 2a and the auxiliary light-emitting portion 2a.
  • the light emitted by the part 2b loses light in the microstructure 2c.
  • FIG. 7 is a schematic diagram of the optical path propagation path of the organic light-emitting sub-pixel 2 of this embodiment, and the dotted arrow in FIG. 7 represents the optical path propagation path.
  • the light emitted by the main light-emitting part 2a and the auxiliary light-emitting part 2b enters the microstructure 2c from the encapsulation layer 24, and reaches the scattering layer 27 through the path of propagation and reflection in the microstructure 2c, and is outside the scattering layer 27.
  • the surface is transmitted to achieve the display effect.
  • the present disclosure also provides a method for fabricating an organic light-emitting sub-pixel.
  • the manufacturing method of the organic light-emitting sub-pixel 2 may include:
  • Step S1 forming a main light-emitting portion 2a and an auxiliary light-emitting portion 2b on the sub-pixel area of a base substrate 1, the main light-emitting portion 2a and the auxiliary light-emitting portion 2b are independently driven and have the same light emission color, as shown in FIG. 15;
  • Step S2 forming a microstructure 2c covering the main light-emitting portion 2a and the auxiliary light-emitting portion 2b on the base substrate 1 to form an organic light-emitting sub-pixel 2, as shown in FIG. 2b;
  • the light emitted by the main light-emitting portion 2a and the auxiliary light-emitting portion 2b is emitted through the microstructure 2c;
  • the initial brightness of the organic light-emitting sub-pixel 2 is the initial brightness of the main light-emitting portion 2a;
  • the brightness is compensated so that the brightness of the organic light-emitting sub-pixel 2 remains consistent with its initial brightness.
  • step S2 specifically includes:
  • Step S21 forming a transparent main body portion 25 covering the main light-emitting portion 2a and the auxiliary light-emitting portion 2b on the base substrate 1.
  • the transparent main body portion 25 has a light incident surface 250 close to the base substrate 1 and a light exit surface 251 away from the base substrate , And the side connecting surface 252 connecting the light incident surface 250 and the light emitting surface 251, as shown in FIG. 16;
  • a reflective layer 26 is formed on the side connection surface 252 of the transparent main body portion 25.
  • the orthographic projection of the reflective layer 26 on the base substrate 1 coincides with the orthographic projection of the side connection surface on the base substrate 1, as shown in FIG. Show.
  • step S2 may also include:
  • Step S23 after the reflective layer 26 is formed, the scattering layer 27 is attached to the light-emitting surface 251 of the transparent main body 25.
  • the orthographic projection of the scattering layer 27 on the base substrate 1 and the normal of the light-emitting surface on the base substrate 1 The projections coincide, as shown in Figure 2b.
  • step S21 may include:
  • Step S211 drop the polymer solution on the main light-emitting part 2a and the auxiliary light-emitting part 2b by means of inkjet printing;
  • step S212 the polymer solution is baked to form the transparent main body 25.
  • step S22 may include: depositing a metal material on the side connecting surface 252 of the transparent main body 25 by evaporation under the cover of a metal mask to form the reflective layer 26, which is designed to reduce production At the same time of cost, the influence on other positions of the transparent main body 25 can be avoided, and the structural stability of the microstructure 2c can be ensured.
  • a specific manufacturing method of the microstructure 2c in the organic light-emitting sub-pixel 2 in this embodiment, as shown in FIG. 8, may specifically include the following steps:
  • step S100 a polymer solution is dropped on the encapsulation layer 24 by inkjet printing, and the polymer can easily cover the first organic light-emitting layer 22a and the second organic light-emitting layer 22b;
  • Step S102 baking the polymer solution to prepare a transparent body portion 25; wherein the polymer solution has a certain surface tension on the encapsulation layer 24, and the formed transparent body portion 25 has a certain curvature;
  • Step S104 under the cover of the metal mask, the metal material is heated in the vacuum evaporation chamber to be sublimated and deposited on the side connecting surface 252 of the transparent main body 25 to form the reflective layer 26;
  • the metal material can be It is Ag, Al and other materials;
  • step S106 after the reflective layer 26 is vapor-deposited, a scattering layer 27 is attached to the light-emitting surface 251 of the transparent main body 25.
  • the microstructure 2c prepared by the above method can make the light emitted by the main light-emitting portion 2a and the auxiliary light-emitting portion 2b gather on the light-emitting surface of the microstructure 2c and be scattered by the scattering layer 27 to achieve the display effect.
  • control structure 3 may include:
  • the obtaining unit 30 is configured to obtain the initial brightness of the organic light-emitting sub-pixel 2;
  • the monitoring unit 31 is used to monitor the working hours of the main light-emitting part 2a;
  • the determining unit 32 is configured to determine the brightness of the main light-emitting part 2a according to the working time
  • the calculation unit 33 is configured to calculate the difference between the initial brightness of the organic light-emitting sub-pixel 2 and the brightness of the main light-emitting portion 2a;
  • the adjustment unit 34 is configured to adjust the brightness of the auxiliary light-emitting portion 2b to the difference between the initial brightness of the organic light-emitting sub-pixel 2 and the brightness of the main light-emitting portion 2a.
  • the embodiment of the present application also provides a display method, which is applied to the display panel described in any of the above embodiments (as shown in FIG. 1, FIG. 2a, FIG. 2b, and FIG. 6), wherein, as shown in FIG. 10 ,
  • the display method may include:
  • Step S202 controlling the brightness of the auxiliary light-emitting portion 2b according to the brightness of the main light-emitting portion 2a to compensate the brightness of the main light-emitting portion 2a, so that the brightness of the organic light-emitting sub-pixel 2 remains consistent with its initial brightness;
  • the initial luminance of the organic light-emitting sub-pixel 2 is the initial luminance of the main light-emitting portion 2a.
  • controlling the brightness of the auxiliary light-emitting portion 2b according to the brightness of the main light-emitting portion 2a, as shown in FIG. 11, may include:
  • Step S2020 obtaining the initial brightness of the organic light-emitting sub-pixel 2;
  • Step S2022 monitoring the working time of the main light-emitting part 2a
  • Step S2024 determining the brightness of the main light-emitting part 2a according to the working time
  • Step S2026 calculating the difference between the initial brightness of the organic light-emitting sub-pixel 2 and the brightness of the main light-emitting portion 2a;
  • Step S2028 adjust the brightness of the auxiliary light-emitting portion 2b to the difference between the initial brightness of the organic light-emitting sub-pixel 2 and the brightness of the main light-emitting portion 2a; in this way, the brightness of the main light-emitting portion 2a can be compensated, so that the organic light-emitting The brightness of pixel 2 is consistent with its initial brightness.
  • Another embodiment of the present application provides a display device, which includes the display panel described in any of the foregoing embodiments.
  • the specific type of the display device is not particularly limited, and the types of display devices commonly used in the field can be used, such as OLED (Organic Light-Emitting Diode) displays, mobile phones, computers, and full-length mirrors. , Vehicle rearview mirror, etc., those skilled in the art can make a corresponding selection according to the specific use of the display device, and will not be repeated here.
  • OLED Organic Light-Emitting Diode
  • the display device also includes other necessary components and components. Take the display as an example, specifically such as a housing, a power cord, etc., and those skilled in the art can follow the specific requirements of the display device. Make corresponding supplements, so I won't repeat them here.

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Abstract

本申请属于显示技术领域，包括一种显示面板及其显示方法、显示装置。该显示面板包括：衬底基板；多个阵列排布在衬底基板上的像素结构，每个像素结构包括多个发光颜色不同的有机发光子像素，每个有机发光子像素包括分别独立驱动、且发光颜色相同的主发光部和辅助发光部以及覆盖主发光部和辅助发光部的微结构，主发光部和辅助发光部发出的光并经微结构射出；其中，有机发光子像素的初始亮度为主发光部的初始亮度；控制结构，用于根据主发光部的亮度控制辅助发光部的亮度，以对主发光部的亮度进行补偿，使得有机发光子像素的亮度与其初始亮度保持一致。该方案的显示面板具有使用寿命长、显示效果优良的特点。

Description

显示面板、显示方法、显示装置及有机发光子像素的制作方法
交叉引用
本公开要求于2020年02月18日提交的申请号为202010098744.7名称为“显示面板及其显示方法、显示装置”的中国专利申请的优先权，该中国专利申请的全部内容通过引用全部并入本文。
技术领域
本申请涉及显示技术领域，尤其涉及一种显示面板、显示方法、显示装置及有机发光子像素的制作方法。
背景技术
有机发光二极管(OLED)显示面板具有自发光、驱动电压低、对比度高，响应时间短等诸多优点，已广泛应用于智能手机等显示领域。
但是，目前OLED显示面板还存在亮度衰减严重等缺点，而影响了其在电视(TV)、车载等长寿命显示领域的应用，因此，急需要采取措施来延长其寿命。
所述背景技术部分公开的上述信息仅用于加强对本申请的背景的理解，因此它可以包括不构成对本领域普通技术人员已知的现有技术的信息。
公开内容
本申请的目的在于提供一种显示面板、显示方法、显示装置及其有机发光子像素的制作方法，其具有使用寿命长、显示效果优良的特点。
为实现上述目的，本申请采用如下技术方案：
本公开第一方面提供了一种显示面板，其中，包括：
衬底基板；
多个阵列排布在所述衬底基板上的像素结构，所述像素结构包括多个发光颜色不同的有机发光子像素，所述有机发光子像素包括主发光部、辅助发光部及覆盖所述主发光部和所述辅助发光部的微结构，同一所述有机发光子像素的所述主发光部和所述辅助发光部分别独立驱动、且发光颜色相同，所述主发光部和所述辅助发光部发出的光经所述微结构射出；其中，所述有机发光子像素的初始亮度为所述主发光部的初始亮度；
控制结构，用于根据所述主发光部的亮度控制所述辅助发光部的亮度，以对所述主发光部的亮度进行补偿，使得所述有机发光子像素的亮度与其初始亮度保持一致。
在本公开的一种示例性实施例中，所述微结构包括透明主体部和反 射层，其中，
所述透明主体部具有靠近所述衬底基板的入光面、远离所述衬底基板的出光面、以及连接所述入光面和所述出光面的侧连接面；
所述反射层形成在所述侧连接面上，且所述反射层在所述衬底基板上的正投影与所述侧连接面在所述衬底基板上的正投影重合。
在本公开的一种示例性实施例中，所述微结构还包括散射层，所述散射层形成在所述出光面上，且所述散射层在所述衬底基板上的正投影与所述出光面在所述衬底基板上的正投影重合。
在本公开的一种示例性实施例中，所述主发光部包括第一有机发光层，所述辅助发光部包括第二有机发光层；其中，
在同一所述有机发光子像素中，所述主发光部的所述第一有机发光层和所述辅助发光部的所述第二有机发光层在所述衬底基板上的正投影均位于所述透明主体部的所述入光面在所述衬底基板上的正投影内；
且所述透明主体部的所述出光面在所述衬底基板上的正投影位于所述透明主体部的入光面在所述衬底基板上的正投影的中心区域。
在本公开的一种示例性实施例中，
所述透明主体部的出光面为与所述衬底基板相平行的平面；
所述透明主体部的侧连接面为其延伸方向与所述衬底基板相交并向所述出光面倾斜的斜平面，或所述透明主体部的侧连接面为向远离所述透明主体部的中心凸起的弧面。
在本公开的一种示例性实施例中，
所述透明主体部的所述出光面在所述衬底基板上的正投影与所述主体部的所述第一有机发光层在所述衬底基板上的正投影存在第一交叠区域；
所述透明主体部的所述出光面在所述衬底基板上的正投影与所述辅助发光部的所述第二有机发光层在所述衬底基板上的正投影存在第二交叠区域；
其中，所述第一交叠区域的面积与所述第二交叠区域的面积相等。
在本公开的一种示例性实施例中，所述第一交叠区域的形状与所述第二交叠区域的形状相同。
在本公开的一种示例性实施例中，
在同一所述有机发光子像素中，所述主体发光部的所述第一有机发光层在所述衬底基板上的正投影的形状、大小与所述辅助发光部的所述第二有机发光层在所述衬底基板上的正投影的形状、大小相同；
且所述透明主体部的所述出光面在所述衬底基板上的正投影的形状、大小与所述辅助发光部的所述第二有机发光层在所述衬底基板上的正投影的形状、大小相同。
在本公开的一种示例性实施例中，所述散射层的厚度大于或等于所述反射层的厚度。
在本公开的一种示例性实施例中，所述透明主体部对可见光的透过率大于或等于85％，所述反射层对可见光的反射率大于或等于95％，所述散射层对可见光的透过率大于或等于85％。
在本公开的一种示例性实施例中，所述透明主体部包括聚合物材料；所述反射层包括金属材料和金属氧化物材料中的至少一者；所述散射层包括氮化物材料、氧化物材料和聚合物材料中的至少一者。
在本公开的一种示例性实施例中，所述微结构的折射率范围为1.5至2.0。
在本公开的一种示例性实施例中，所述控制结构包括：
获取单元，用于获取所述有机发光子像素的初始亮度；
监测单元，用于监测所述主发光部的工作时长；
确定单元，用于根据所述工作时长确定所述主发光部的亮度；
计算单元，用于计算所述有机发光子像素的初始亮度与所述主发光部的亮度之间的差值；
调整单元，用于将所述辅助发光部的亮度大小调整为所述有机发光子像素的初始亮度与所述主发光部的亮度之间的差值。
本公开第二方面提供了一种显示方法，其中，应用于上述任一项所述的显示面板，其中，所述显示方法包括：
根据所述主发光部的亮度控制所述辅助发光部的亮度，以对所述主发光部的亮度进行补偿，使得所述有机发光子像素的亮度与其初始亮度保持一致；
其中，所述有机发光子像素的初始亮度为所述主发光部的初始亮度。
在本公开的一种示例性实施例中，根据所述主发光部的亮度控制所述辅助发光部的亮度，包括：
获取所述有机发光子像素的初始亮度；
监测所述主发光部的工作时长；
根据所述工作时长确定所述主发光部的亮度；
计算所述有机发光子像素的初始亮度与所述主发光部的亮度之间的差值；
将所述辅助发光部的亮度大小调整为所述有机发光子像素的初始亮度与所述主发光部的亮度之间的差值。
本公开第三方面提供了一种显示装置，其中，包括上述任一项所述的显示面板。
本公开第四方面提供了一种有机发光子像素的制作方法，其中，包括：
在衬底基板的子像素区上形成主发光部和辅助发光部，所述主发光部和所述辅助发光部分别独立驱动、且发光颜色相同；
在所述衬底基板上形成覆盖所述主发光部和所述辅助发光部的微结构，以形成所述有机发光子像素；
其中，所述主发光部和所述辅助发光部发出的光经所述微结构射出；所述有机发光子像素的初始亮度为所述主发光部的初始亮度；所述辅助发光部的亮度能够对所述主发光部的亮度进行补偿，使得所述有机发光子像素的亮度与其初始亮度保持一致。
在本公开的一种示例性实施例中，所述在所述衬底基板上形成覆盖所述主发光部和所述辅助发光部的微结构，包括：
在所述衬底基板上形成覆盖所述主发光部和所述辅助发光部的透明主体部，所述透明主体部具有靠近所述衬底基板的入光面、远离所述衬底基板的出光面、以及连接所述入光面和所述出光面的侧连接面；
在所述透明主体部的所述侧连接面上形成反射层，所述反射层在所述衬底基板上的正投影与所述侧连接面在所述衬底基板上的正投影重合。
在本公开的一种示例性实施例中，所述在所述衬底基板上形成覆盖所述主发光部和所述辅助发光部的微结构，还包括：
在形成所述反射层之后，将散射层贴合在所述透明主体部的所述出光面上，所述散射层在所述衬底基板上的正投影与所述出光面在所述衬底基板上的正投影重合。
在本公开的一种示例性实施例中，在所述衬底基板上形成覆盖所述主发光部和所述辅助发光部的透明主体部，包括：
通过喷墨打印的方式将聚合物溶液滴在所述主发光部和所述辅助发光部上；
对所述聚合物溶液进行烘烤，以形成所述透明主体部。
在本公开的一种示例性实施例中，在所述透明主体部的所述侧连接面上形成反射层，包括：
在金属掩膜板的遮挡下，通过蒸镀的方式将金属材料沉积在所述透明主体部的侧连接面上，以形成反射层。
本申请提供的技术方案可以达到以下有益效果：
本申请所提供的显示面板及其显示方法、显示装置、有机发光子像素的制作方法，通过将有机发光子像素中设置辅助发光部，并通过控制结构根据主发光部的亮度控制辅助发光部的亮度，可利用辅助发光部的亮度对主发光部的亮度进行补偿，使得有机发光子像素的亮度与其初始亮度保持一致，这样可延长显示面板的使用寿命及提高显示效果。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
通过参照附图详细描述其示例实施方式，本申请的上述和其它特征及优点将变得更加明显。
图1示出了本申请一实施方式中所示的显示面板的平面示意图；
图2a示出了本申请一实施方式中所示的显示面板中衬底基板与有机发光子像素的剖视示意图；
图2b示出了本申请又一实施方式中所示的显示面板中衬底基板与有机发光子像素的剖视示意图；
图3示出了本申请一实施方式中所示的显示面板中有机发光子像素的主发光部的亮度衰减曲线示意图；
图4示出了本申请一实施方式中所示的显示面板中有机发光子像素的辅助发光部随着有机发光子像素的工作时长变化的示意图；
图5示出了本申请一实施方式中所示的显示面板中在经辅助发光部对主发光部的亮度进行补偿后，有机发光子像素的亮度随其工作时长变化的示意图；
图6示出了本申请另一实施方式中所示的显示面板中衬底基板与有机发光子像素的剖视示意图；
图7示出了本申请另一实施方式中所示的显示面板中有机发光子像素的光路传播路径示意图；
图8示出了本申请一实施方式中所示的显示面板中有机发光子像素的微结构的制作方法的流程图；
图9示出了本申请一实施方式中所示的显示面板中控制结构的结构框图；
图10示出了本申请一实施方式中所示的显示面板的显示方法的流程图；
图11示出了本申请另一实施方式中所示的显示面板的显示方法的流程图；
图12示出了本申请一实施方式中所示的微结构中透明主体部的截面示意图；
图13示出了本申请另一实施方式中所示的微结构中透明主体部的截面示意图；
图14示出了本申请一实施方式中所示的微结构与第一有机发光层和第二有机发光层在衬底基板上的正投影的位置关系示意图；
图15示出了完成步骤S1的结构示意图；
图16示出了完成步骤S21的结构示意图；
图17示出了完成步骤S22的结构示意图。
具体实施方式
现在将参考附图更全面地描述示例实施例。然而，示例实施例能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施例使得本申请将更加全面和完整，并将示例实施例的构思全面地 传达给本领域的技术人员。所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施例中。在下面的描述中，提供许多具体细节从而给出对本申请的实施例的充分理解。
在图中，为了清晰，可能夸大了区和层的厚度。在图中相同的附图标记表示相同或类似的结构，因而将省略它们的详细描述。
所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施例中。在下面的描述中，提供许多具体细节从而给出对本申请的实施例的充分理解。然而，本领域技术人员将意识到，可以实践本申请的技术方案而没有所述特定细节中的一个或更多，或者可以采用其它的方法、组元、材料等。在其它情况下，不详细示出或描述公知结构、材料或者操作以避免模糊本申请的主要技术创意。
当某结构在其它结构“上”时，有可能是指某结构一体形成于其它结构上，或指某结构“直接”设置在其它结构上，或指某结构通过另一结构“间接”设置在其它结构上。用语“一个”、“一”、“所述”用以表示存在一个或多个要素/组成部分/等；用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等。用语“第一”和“第二”等仅作为标记使用，不是对其对象的数量限制。
本申请实施例提供了一种显示面板，如图1所示，其包括衬底基板1、多个阵列排布在衬底基板1上的像素结构及控制结构3，其中：
此衬底基板1可为单层结构，也可为多层结构。且此衬底基板1可具有柔性，以使显示面板具有可弯折、卷曲等特点，提高显示面板的应用场景，但不限于此，此衬底基板1也可呈刚性，可根据实际需求而定。
每个像素结构可包括多个发光颜色不同的有机发光子像素2，例如，图1中示出的红光(R)子像素、绿光(G)子像素、蓝光(B)子像素，换言之，本公开的像素结构由R、G、B这三个子像素构成；但不限于此，本公开的像素结构也可由R、G、B、B这三个子像素构成；此外，像素结构不限于R、G、B这些发光颜色，也可包括其他发光颜色，例如：黄色等。
在本公开的实施例中，R子像素、B子像素的形状不限于图中所示的矩形，也可为圆形、椭圆形、菱形或其他多边形等，视具体情况而定；且G子像素的形状不限于图中所示的圆形，也可为椭圆形、矩形、菱形或其他多边形等，视具体情况而定。
在本公开实施例的像素结构由R、G、B这三个子像素构成时，R、G、B这三个子像素的实际发光面积可分别为3600um 2、4572um 2、5929um 2，R、G、B这三个子像素的实际发光面积比例关系可为1:1.27:1.47。其中，R、G、B这三个子像素的形状可以为正方形、圆形、菱形、椭圆形等形状，具体的形状、出光面积、比例根据显示产品要求 决定。
在本实施例中，有机发光子像素2即为OLED子像素，由于OLED子像素的亮度会随着工作时长呈衰减，这样容易导致显示效果变差，其使用寿命短的问题。
为解决这一问题，本实施例中对有机发光子像素2的结构进行了改进，如图2a和图2b所示，改进后的有机发光子像素2具体可包括主发光部2a、辅助发光部2b及微结构2c；此微结构2c覆盖主发光部2a和辅助发光部2b，此处提到的覆盖指的是微结构2c在衬底基板1上的正投影与主发光部2a和辅助发光部2b在衬底基板1上的正投影的至少部分存在交叠；此主发光部2a和辅助发光部2b分别独立驱动，且主发光部2a和辅助发光部2b的发光颜色相同，该主发光部2a和辅助发光部2b发出的光可经微结构2c射出；其中，有机发光子像素2所发射光的亮度为L，且有机发光子像素2的初始亮度为L0，主发光部2a所发射光的亮度为L1，辅助发光部2b所发射光的亮度为L2，有机发光子像素2所发射光的亮度L由主发光部2a所发射光的亮度L1和辅助发光部2b所发射光的亮度L2所叠加，即：L＝L1+L2，需要说明的是，本实施例中提到的L、L1和L2均在微结构2c的出光处测得。
其中，有机发光子像素2的初始亮度L0可为主发光部2a的初始亮度，也就是说，在显示面板最开始显示时，由有机发光子像素2中的主发光部2a独立工作；主发光部2a的亮度会随着工作时长增加而衰减，具体地，该主发光部2a的衰减曲线示意图如图3所示，图3中纵坐标为主发光部2a所发射光的亮度L1与初始亮度L0的比值，横坐标为有机发光子像素2的工作时长T，由于主发光部2a在最开始显示时就开始工作，因此，此有机发光子像素2的工作时长T也可为主发光部2a的工作时长。
本实施例中，由于主发光部2a的亮度会随着工作时长增加而衰减，因此，为了保证有机发光子像素2的亮度能够维持在初始亮度，可利用辅助发光部2b对主发光部2a的发光亮度进行补偿；具体可通过图1中的控制结构3根据主发光部2a的亮度L1控制辅助发光部2b的亮度L2，以对主发光部2a的亮度L1进行补偿，使得有机发光子像素2的亮度L与其初始亮度L0保持一致，这样设计大大延长了显示面板的使用寿命和提高了显示效果，极大的拓展了显示面板的应用领域。
其中，辅助发光部2b的亮度L2随有机发光子像素2的工作时长变化示意图如图4所示，图4中纵坐标为辅助发光部2b的亮度L2与有机发光子像素2的初始亮度L0的比值，横坐标为机发光子像素的工作时长T。
本实施例中，在经辅助发光部2b对主发光部2a的亮度进行补偿后，有机发光子像素2的亮度L随有机发光子像素2的工作时长变化示意图如图5所示，图5中纵坐标为有机发光子像素2的亮度L与有机发光子 像素2的初始亮度L0的比值，横坐标为机发光子像素的工作时长T。
下面结合附图对本实施例的显示面板进行详细阐述。
如图6所示，有机发光子像素2可包括依次层叠设置在衬底基板1上的驱动电路层、阳极层、有机发光材料层、阴极层23及封装层24；其中，驱动电路层可包括第一驱动晶体管20a和第二驱动晶体管20b，该第一驱动晶体管20a、第二驱动晶体管20b均包括有源层200、栅绝缘层201、栅极202、源电极203和漏电极204；阳极层可包括相互独立设置的第一阳极21a和第二阳极21b，此第一阳极21a可与第一驱动晶体管20a的漏电极204连接，第二阳极21b可与第二驱动晶体管20b的漏电极204连接；有机发光材料层包括像素定义层22c、第一有机发光层22a和第二有机发光层22b，像素定义层22c具有与第一阳极21a相对的第一像素开口和与第二阳极21b相对的第二像素开口，即：第一像素开口在衬底基板1上的正投影位于第一阳极21a在衬底基板1上的正投影内，第二像素开口在衬底基板1上的正投影位于第二阳极21b在衬底基板1上的正投影内；第一有机发光层22a位于第一像素开口内并与第一阳极21a接触，第二有机发光层22b位于第二像素开口内并与第二阳极21b接触，应当理解的是，第一有机发光层22a与第二有机发光层22b之间具有间隙，此间隙可为10μm左右，但不限于此，也可为其他数值，视具体情况而定；阴极层23为整层结构，此阴极层23与第一有机发光层22a和第二有机发光层22b均接触；封装层24为整层结构并覆盖整个阴极层23。
其中，第一驱动晶体管20a、第一阳极21a、第一有机发光层22a、阴极层23、封装层24组成主发光部2a；第二驱动晶体管20b、第二阳极21b、第二有机发光层22b、阴极层23、封装层24组成辅助发光部2b。应当理解的是，第一有机发光层22a的颜色与第二有机发光层22b的颜色相同，以保证主发光部2a和辅助发光部2b的发光颜色相同。
此外，主发光部2a的亮度由第一驱动晶体管20a所提供的信号决定，辅助发光部2b的亮度由第二驱动晶体管20b所提供的信号决定。
本实施例中，同一有机发光子像素2的主发光部2a的发光面积可与辅助发光部2b的发光面积相等，以保证显示效果，但不限于此，视具体情况而定。
可选地，在同一有机发光子像素2中，主发光部2a的第一有机发光层22a在衬底基板1上的正投影的形状、大小与其辅助发光部2b的第二有机发光层22b在衬底基板1上的正投影的形状、大小相同，这样在保证主发光部2a和辅助发光部2b的发光面积相等的同时，还可降低设计难度。
举例而言，主发光部2a的第一有机发光层22a、辅助发光部2b的第二有机发光层22b在衬底基板1上的正投影形状可为矩形、菱形、椭圆形、圆形或其他多边形，视具体情况而定。
如图2a、图2b和图6所示，有机发光子像素2中的微结构2c可包括透明主体部25和反射层26，如图12和图13所示，透明主体部25具有靠近衬底基板1的入光面250、远离衬底基板1的出光面251、以及连接入光面250和出光面251的侧连接面252；而反射层26可形成在侧连接面上，如图2a、图2b和图6所示；此反射层26在衬底基板1上的正投影可与透明主体部25的侧连接面252在衬底基板1上的正投影重合。
需要说明的是，透明主体部25的入光面250可为如图12和图13所示的平面，但不限于此，也可为透明主体部25的入光面250也可为凹凸不平状，具体与其下方膜层的形状相适配，例如：图6所示的封装层24中与透明主体部25对应的部位呈凹凸不平状，因此，在透明主体部25的入光面250与封装层24相接触时，透明主体部25的入光面250也可为凹凸不平状。
在本公开的实施例中，在同一有机发光子像素2中，透明主体部25的入光面250在衬底基板1上的正投影可覆盖第一有机发光层22a和第二有机发光层22b，此处覆盖指的是透明主体部25的入光面250在衬底基板1上的正投影可与第一有机发光层22a和第二有机发光层22b在衬底基板上的正投影的至少部分存在交叠；具体地，在同一有机发光子像素2中，主发光部2a的第一有机发光层22a和辅助发光部2b的第二有机发光层22b在衬底基板1上的正投影均位于透明主体部25的入光面250在衬底基板1上的正投影内，这样可以保证主发光部2a所发射的光和辅助发光部2b所发射的光能够完全从微结构2c中透明主体部25的入光面250进入到透明主体部25中，部分光线可直接经透明主体部25的出光面251射出，另一部分光线照射到反射层26上可经反射层26反射回透明主体部25中，然后最终经出光面射出，也就是说，第一有机发光层22a和第二有机发光层22b所发射的光只经微结构2c的出光面射出，这样设计可使得光从一区域集中射出，以保证有机发光子像素2的显示亮度。
应当理解的是，此微结构2c的透明主体部25的出光面251的面积可为整个有机发光子像素2的实际发光面积，该出光面的大小具体根据实际需求而定。此外，该出光面可位于微结构2c的中心区域，即：透明主体部25的出光面251在衬底基板1上的正投影位于透明主体部25的入光面250在衬底基板1上的正投影的中心区域；而侧连接面可环绕出光面设置，且侧连接面的两端分别与入光面的边缘和出光面的边缘相接，整个透明主体部25为一体式结构。
在本公开的实施例中，如图12和图13所示，透明主体部25的出光面251可为与衬底基板1相平行的平面，换言之，透明主体部25的出光面251可为与衬底基板的厚度方向相垂直的平面，这样设计相比于出光面为倾斜面或弧面的方案，在保证出光面积的同时，可降低透明主体部25整体的厚度，减小光损耗。
应当理解的是，透明主体部25的出光面251也可为略有一定弧度的弧面，视具体产品需求而定。
其中，如图12所示，透明主体部25的侧连接面252为其延伸方向与衬底基板1相交并向出光面251倾斜的斜平面；或如图13所示，透明主体部25的侧连接面252为向远离透明主体部25的中心凸起的弧面，这样设计便于后续反射层26的蒸镀在侧连接面252上，保证反射层16膜厚的均一性。
可选地，如图14所示，透明主体部25的出光面251在衬底基板1上的正投影与主发光部2a的第一有机发光层22a在衬底基板1上的正投影存在第一交叠区域，透明主体部25的出光面251在衬底基板1上的正投影与辅助发光部2b的第二有机发光层22b在衬底基板1上的正投影存在第二交叠区域，此第一交叠区域的面积与第二交叠区域的面积相等，这样设计可保证主发光部2a和辅助发光部2b光路径基本一致，从而可提高光补偿效果，继而提高显示效果。
其中，第一交叠区域的面积与整个第一有机发光层22a在衬底基板1上的正投影的面积之比范围为45％至55％，比如：45％、50％、55％等等，视具体情况而定；第二交叠区域的面积与整个第二有机发光层22b在衬底基板1上的正投影的面积之比范围为45％至55％，比如：45％、50％、55％等等，视具体情况而定。
举例而言，第一交叠区域的形状可与第二交叠区域的形状相同，在保证第一交叠区域的面积和第二交叠区域的面积相等的同时，还可降低设计难度。应当理解的是，第一交叠区域的形状和第二交叠区域的形状也可不相同，且第一交叠区域的面积和第二交叠区域的面积也可不相等，视具体要求而定。
在本公开的实施例中，此反射层26可包括金属材料和金属氧化物材料中的至少一者，也就是说，反射层26可采用材料或金属氧化材料中的至少一者制作而成；举例而言，本公开实施例的反射层26可为单层结构，在此反射层26为单层结构时，其可采用Al(铝)、Ag(银)等具有高反射率的金属材料制作而成，但不限限于此，本公开实施例的反射层26还可为多层复合结构，例如：反射层26可包括依次堆叠的氧化铟锡(ITO)膜层、铝层及氧化铟锡(ITO)膜层，通过在铝层两侧设置氧化铟锡膜层，可以避免铝层氧化，从而可保证反射层的反射率；此外，反射层26也可仅包括一层铝层和一层氧化铟锡膜层，此氧化铟锡膜层可位于铝层靠近或远离透明主体部25的一侧。
其中，本公开实施例的反射层26对可见光的反射率可大于或等于95％，以保证显示效果，需要说明的是，反射层26不限于前述提到Al、Ag等材料，也可为其他材料，只要其他材料对可见光的反射率能够达到大于或等于95％即可。
此外，本公实施例的反射层26的厚度范围可为0.1um至100um，比 如：0.1um、1um、5um、10um、30um、50um、70um、100um等等，但不限于此，反射层26的厚度也可在其他取值范围内，视具体情况而定。
需要说明的是，本公开实施例的透明主体部25在衬底基板1上的正投影形状可与第一有机发光层22a和第二有机发光层22b的形状相同或类似，例如：在第一有机发光层22a和第二有机发光层22b在衬底基板1上的正投影为长方形时，透明主体部25在衬底基板1上的正投影形状可为长方形、正方形、菱形或椭圆形等等；在第一有机发光层22a和第二有机发光层22b在衬底基板1上的正投影为圆形时，透明主体部25在衬底基板1上的正投影形状可为圆形、长方形、正方形、菱形或椭圆形等等，这样设计在保证透明主体部25能够完全覆盖第一有机发光层22a和第二有机发光层22b的同时，还可减小透明主体部25整体所占的面积，从而利于提高产品分辨率。
在本公开的实施例中，透明主体部25可包括聚合物材料，即：透明主体部25可采用聚合物材料制作而成，应当理解的是，此聚合物可为透明材料，对主发光部2a和辅助发光部2b所发射的光的吸收比较小，减小光损耗。
其中，透明主体部25对可见光的透过率可大于或等于85％，以保证显示效果，需要说明的是，透明主体部25不限于前述提到的聚合物材料，也可为其他材料，只要其他材料对可见光的透过率能够达到大于或等于85％即可。
此外，本公实施例的透明主体部25的厚度范围可为1um至100um，比如：1um、5um、10um、30um、50um、70um、100um等等，但不限于此，透明主体部25的厚度也可在其他取值范围内，视具体情况而定。
在本公开的实施例中，如图2a和图6所示，该微结构2c还可包括散射层27，此散射层27形成在出光面上，且散射层27在衬底基板1上的正投影可与出光面在衬底基板1上的正投影重合，该散射层27可使透明主体部25的出光面251射出的光发生散射，以降低显示面板的色偏。
其中，为了保证显示效果，散射层27对可见光的透过率可大于或等于85％。举例而言，此散射层27可包括氮化物材料、氧化物材料和聚合物材料中的至少一者，但不限于此，也可为其他材料，只要在实现散射的同时还能保证散射层27的对可见光的透过率即可。
此外，本公实施例的散射层27的厚度范围可为10um至100000um，比如：10um、100um、500um、1000um、5000um、10000um、50000um、100000um等等，但不限于此，散射层27的厚度也可在其他取值范围内，视具体情况而定。
举例而言，如图2b所示，本公开实施例的散射层27的厚度可大于反射层26的厚度，以避免反射层26影响散射层27的散射角度，保证散射效果；可选地，散射层27的厚度可大于或等于反射层26厚度的二倍，以进一步保证散射效果，但不限于此，散射层27的厚度也可大于反射层 26厚度小于反射层26厚度的二倍；此外，如图2a所示，散射层27的厚度还可等于反射层26的厚度；或者散射层27的厚度也可略小于反射层26的厚度等等，视具体情况而定。
其中，以蓝色有机发光子像素为例，其微结构2c中的散射层27在衬底基板1上的正投影形状可为77um×77um，面积为5929um 2的正方形，第一有机发光层22a和第二有机发光层22b中间具有10μm的间隙，且第一有机发光层22a和第二有机发光层22b在衬底基板1上的正投影形状可为100um×59.29um，面积为5929um 2的长方形；其中，散射层27投影于第一有机发光层22a和第二有机发光层22b的正上方。散射层27在第一有机发光层22a和第二有机发光层22b上的投影面积(即：第一交叠区域和第二交叠区域的面积)均为2579.5um 2，约占第一有机发光层22a和第二有机发光层22b面积的49％。
在本公开的实施例中，该微结构2c的折射率范围可为1.5至2.0，比如：1.5、1.7、2.0等等，以提高光的传播速度，从而可减小主发光部2a和辅助发光部2b所发射的光在微结构2c中的光损耗。
图7为本实施例的有机发光子像素2的光路传播路径示意图，图7中虚线箭头表示光路传播路径。如图7所示，主发光部2a和辅助发光部2b所发射的光由封装层24进入微结构2c中，在微结构2c中经过传播、反射等路径到达散射层27，在散射层27外表面传出以达到显示的效果。
其中，本公开还提供了一种有机发光子像素的制作方法，此有机发光子像素的结构可参考前述提到的内容，在此不做重复赘述。在本公开的实施例中，有机发光子像素2的制作方法可包括：
步骤S1，在衬底基板1的子像素区上形成主发光部2a和辅助发光部2b，主发光部2a和辅助发光部2b分别独立驱动、且发光颜色相同，如图15所示；
步骤S2，在衬底基板1上形成覆盖主发光部2a和辅助发光部2b的微结构2c，以形成有机发光子像素2，如图2b所示；
其中，主发光部2a和辅助发光部2b发出的光经微结构2c射出；有机发光子像素2的初始亮度为主发光部2a的初始亮度；辅助发光部2b的亮度能够对主发光部2a的亮度进行补偿，使得有机发光子像素2的亮度与其初始亮度保持一致。
在本公开的实施例中，步骤S2，具体包括：
步骤S21，在衬底基板1上形成覆盖主发光部2a和辅助发光部2b的透明主体部25，透明主体部25具有靠近衬底基板1的入光面250、远离衬底基板的出光面251、以及连接入光面250和出光面251的侧连接面252，如图16所示；
步骤S22，在透明主体部25的侧连接面252上形成反射层26，反射层26在衬底基板1上的正投影与侧连接面在衬底基板1上的正投影重合， 如图17所示。
进一步地，步骤S2，还可包括：
步骤S23，在形成反射层26之后，将散射层27贴合在透明主体部25的出光面251上，散射层27在衬底基板1上的正投影与出光面在衬底基板1上的正投影重合，如图2b所示。
举例而言，步骤S21可包括：
步骤S211，通过喷墨打印的方式将聚合物溶液滴在主发光部2a和辅助发光部2b上；
步骤S212，对聚合物溶液进行烘烤，以形成透明主体部25。
举例而言，步骤S22可包括：在金属掩膜板的遮挡下，通过蒸镀的方式将金属材料沉积在透明主体部25的侧连接面252上，以形成反射层26，这样设计在降低制作成本的同时，还可避免对透明主体部25其他位置的影响，保证微结构2c的结构稳定性。
基于前述内容，本实施例中有机发光子像素2中微结构2c的一具体制造方法，如图8所示，具体可包括以下步骤：
步骤S100，通过喷墨打印方式将聚合物溶液滴在封装层24上，该聚合物容易覆盖第一有机发光层22a和第二有机发光层22b；
步骤S102，对聚合物溶液进行烘烤处理，以制备成透明主体部25；其中，聚合物溶液在封装层24上有一定的表面张力，所形成的透明主体部25具有一定的弧度；
步骤S104，在金属掩膜板的遮挡下，由真空蒸镀腔室中加热金属材料，使其升华后沉积在透明主体部25的侧连接面252上制成反射层26；其中，金属材料可以是Ag、Al等材料；
步骤S106，蒸镀完反射层26后在透明主体部25的出光面251上贴合一层散射层27。
通过上述方法制备的微结构2c可以使主发光部2a和辅助发光部2b所发射的光在微结构2c的出光面聚集，并经散射层27散射出来，达到显示的效果。
在一实施例中，如图9所示，前述控制结构3可包括：
获取单元30，用于获取有机发光子像素2的初始亮度；
监测单元31，用于监测主发光部2a的工作时长；
确定单元32，用于根据工作时长确定主发光部2a的亮度；
计算单元33，用于计算有机发光子像素2的初始亮度与主发光部2a的亮度之间的差值；
调整单元34，用于将辅助发光部2b的亮度大小调整为有机发光子像素2的初始亮度与主发光部2a的亮度之间的差值。
本申请实施例还提供了一种显示方法，其应用于上述中任一实施例所描述的显示面板(如图1、图2a、图2b和图6所示)，其中，如图10所示，该显示方法可包括：
步骤S202，根据主发光部2a的亮度控制辅助发光部2b的亮度，以对主发光部2a的亮度进行补偿，使得有机发光子像素2的亮度与其初始亮度保持一致；
其中，有机发光子像素2的初始亮度为主发光部2a的初始亮度。
具体地，根据主发光部2a的亮度控制辅助发光部2b的亮度，如图11所示，可包括：
步骤S2020，获取有机发光子像素2的初始亮度；
步骤S2022，监测主发光部2a的工作时长；
步骤S2024，根据工作时长确定主发光部2a的亮度；
步骤S2026，计算有机发光子像素2的初始亮度与主发光部2a的亮度之间的差值；
步骤S2028，将辅助发光部2b的亮度大小调整为有机发光子像素2的初始亮度与主发光部2a的亮度之间的差值；这样可对主发光部2a的亮度进行补偿，使得有机发光子像素2的亮度与其初始亮度保持一致。
本申请又一实施例提供了一种显示装置，其包括前述任一实施例描述的显示面板。
根据本申请的实施例，该显示装置的具体类型不受特别的限制，本领域常用的显示装置类型均可，具体例如OLED(Organic Light-Emitting Diode，有机发光二极管)显示器、手机、电脑、穿衣镜、车载后视镜等等，本领域技术人员可根据该显示设备的具体用途进行相应地选择，在此不再赘述。
需要说明的是，该显示装置除了显示面板以外，还包括其他必要的部件和组成，以显示器为例，具体例如外壳、电源线，等等，本领域技术人员可根据该显示装置的具体使用要求进行相应地补充，在此不再赘述。
需要说明的是，尽管在附图中以特定顺序描述了本申请中方法的各个步骤，但是，这并非要求或者暗示必须按照该特定顺序来执行这些步骤，或是必须执行全部所示的步骤才能实现期望的结果。附加的或备选的，可以省略某些步骤，将多个步骤合并为一个步骤执行，以及/或者将一个步骤分解为多个步骤执行等，均应视为本申请的一部分。
应可理解的是，本申请不将其应用限制到本说明书提出的部件的详细结构和布置方式。本申请能够具有其他实施方式，并且能够以多种方式实现并且执行。前述变形形式和修改形式落在本申请的范围内。应可理解的是，本说明书公开和限定的本申请延伸到文中和/或附图中提到或明显的两个或两个以上单独特征的所有可替代组合。所有这些不同的组合构成本申请的多个可替代方面。本说明书的实施方式说明了已知用于实现本申请的最佳方式，并且将使本领域技术人员能够利用本申请。

Claims (21)

  1. 一种显示面板，其中，包括：
    衬底基板；
    多个阵列排布在所述衬底基板上的像素结构，所述像素结构包括多个发光颜色不同的有机发光子像素，所述有机发光子像素包括主发光部、辅助发光部及覆盖所述主发光部和所述辅助发光部的微结构，同一所述有机发光子像素的所述主发光部和所述辅助发光部分别独立驱动、且发光颜色相同，所述主发光部和所述辅助发光部发出的光经所述微结构射出；其中，所述有机发光子像素的初始亮度为所述主发光部的初始亮度；
    控制结构，用于根据所述主发光部的亮度控制所述辅助发光部的亮度，以对所述主发光部的亮度进行补偿，使得所述有机发光子像素的亮度与其初始亮度保持一致。
  2. 根据权利要求1所述的显示面板，其中，所述微结构包括透明主体部和反射层，其中，
    所述透明主体部具有靠近所述衬底基板的入光面、远离所述衬底基板的出光面、以及连接所述入光面和所述出光面的侧连接面；
    所述反射层形成在所述侧连接面上，且所述反射层在所述衬底基板上的正投影与所述侧连接面在所述衬底基板上的正投影重合。
  3. 根据权利要求2所述的显示面板，其中，所述微结构还包括散射层，所述散射层形成在所述出光面上，且所述散射层在所述衬底基板上的正投影与所述出光面在所述衬底基板上的正投影重合。
  4. 根据权利要求2或3所述的显示面板，其中，所述主发光部包括第一有机发光层，所述辅助发光部包括第二有机发光层；其中，
    在同一所述有机发光子像素中，所述主发光部的所述第一有机发光层和所述辅助发光部的所述第二有机发光层在所述衬底基板上的正投影均位于所述透明主体部的所述入光面在所述衬底基板上的正投影内；
    且所述透明主体部的所述出光面在所述衬底基板上的正投影位于所述透明主体部的入光面在所述衬底基板上的正投影的中心区域。
  5. 根据权利要求4所述的显示面板，其中，
    所述透明主体部的出光面为与所述衬底基板相平行的平面；
    所述透明主体部的侧连接面为其延伸方向与所述衬底基板相交并向所述出光面倾斜的斜平面，或所述透明主体部的侧连接面为向远离所述透明主体部的中心凸起的弧面。
  6. 根据权利要求5所述的显示面板，其中，
    所述透明主体部的所述出光面在所述衬底基板上的正投影与所述主体部的所述第一有机发光层在所述衬底基板上的正投影存在第一交叠区域；
    所述透明主体部的所述出光面在所述衬底基板上的正投影与所述辅 助发光部的所述第二有机发光层在所述衬底基板上的正投影存在第二交叠区域；
    其中，所述第一交叠区域的面积与所述第二交叠区域的面积相等。
  7. 根据权利要求6所述的显示面板，其中，所述第一交叠区域的形状与所述第二交叠区域的形状相同。
  8. 根据权利要求7所述的显示面板，其中，
    在同一所述有机发光子像素中，所述主体发光部的所述第一有机发光层在所述衬底基板上的正投影的形状、大小与所述辅助发光部的所述第二有机发光层在所述衬底基板上的正投影的形状、大小相同；
    且所述透明主体部的所述出光面在所述衬底基板上的正投影的形状、大小与所述辅助发光部的所述第二有机发光层在所述衬底基板上的正投影的形状、大小相同。
  9. 根据权利要求3所述的显示面板，其中，所述散射层的厚度大于或等于所述反射层的厚度。
  10. 根据权利要求3所述的显示面板，其中，所述透明主体部对可见光的透过率大于或等于85％，所述反射层对可见光的反射率大于或等于95％，所述散射层对可见光的透过率大于或等于85％。
  11. 根据权利要求3所述的显示面板，其中，所述透明主体部包括聚合物材料；所述反射层包括金属材料和金属氧化物材料中的至少一者；所述散射层包括氮化物材料、氧化物材料和聚合物材料中的至少一者。
  12. 根据权利要求1所述的显示面板，其中，所述微结构的折射率范围为1.5至2.0。
  13. 根据权利要求1所述的显示面板，其中，所述控制结构包括：
    获取单元，用于获取所述有机发光子像素的初始亮度；
    监测单元，用于监测所述主发光部的工作时长；
    确定单元，用于根据所述工作时长确定所述主发光部的亮度；
    计算单元，用于计算所述有机发光子像素的初始亮度与所述主发光部的亮度之间的差值；
    调整单元，用于将所述辅助发光部的亮度大小调整为所述有机发光子像素的初始亮度与所述主发光部的亮度之间的差值。
  14. 一种显示方法，其中，应用于权利要求1至13中任一项所述的显示面板，其中，所述显示方法包括：
    根据所述主发光部的亮度控制所述辅助发光部的亮度，以对所述主发光部的亮度进行补偿，使得所述有机发光子像素的亮度与其初始亮度保持一致；
    其中，所述有机发光子像素的初始亮度为所述主发光部的初始亮度。
  15. 根据权利要求14所述的显示方法，其中，根据所述主发光部的亮度控制所述辅助发光部的亮度，包括：
    获取所述有机发光子像素的初始亮度；
    监测所述主发光部的工作时长；
    根据所述工作时长确定所述主发光部的亮度；
    计算所述有机发光子像素的初始亮度与所述主发光部的亮度之间的差值；
    将所述辅助发光部的亮度大小调整为所述有机发光子像素的初始亮度与所述主发光部的亮度之间的差值。
  16. 一种显示装置，其中，包括权利要求1至13中任一项所述的显示面板。
  17. 一种有机发光子像素的制作方法，其中，包括：
    在衬底基板的子像素区上形成主发光部和辅助发光部，所述主发光部和所述辅助发光部分别独立驱动、且发光颜色相同；
    在所述衬底基板上形成覆盖所述主发光部和所述辅助发光部的微结构，以形成所述有机发光子像素；
    其中，所述主发光部和所述辅助发光部发出的光经所述微结构射出；所述有机发光子像素的初始亮度为所述主发光部的初始亮度；所述辅助发光部的亮度能够对所述主发光部的亮度进行补偿，使得所述有机发光子像素的亮度与其初始亮度保持一致。
  18. 根据权利要求17所述的制作方法，其中，所述在所述衬底基板上形成覆盖所述主发光部和所述辅助发光部的微结构，包括：
    在所述衬底基板上形成覆盖所述主发光部和所述辅助发光部的透明主体部，所述透明主体部具有靠近所述衬底基板的入光面、远离所述衬底基板的出光面、以及连接所述入光面和所述出光面的侧连接面；
    在所述透明主体部的所述侧连接面上形成反射层，所述反射层在所述衬底基板上的正投影与所述侧连接面在所述衬底基板上的正投影重合。
  19. 根据权利要求18所述的制作方法，其中，所述在所述衬底基板上形成覆盖所述主发光部和所述辅助发光部的微结构，还包括：
    在形成所述反射层之后，将散射层贴合在所述透明主体部的所述出光面上，所述散射层在所述衬底基板上的正投影与所述出光面在所述衬底基板上的正投影重合。
  20. 根据权利要求18所述的制作方法，其中，在所述衬底基板上形成覆盖所述主发光部和所述辅助发光部的透明主体部，包括：
    通过喷墨打印的方式将聚合物溶液滴在所述主发光部和所述辅助发光部上；
    对所述聚合物溶液进行烘烤，以形成所述透明主体部。
  21. 根据权利要求18所述的制作方法，其中，在所述透明主体部的所述侧连接面上形成反射层，包括：
    在金属掩膜板的遮挡下，通过蒸镀的方式将金属材料沉积在所述透明主体部的侧连接面上，以形成反射层。
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