WO2025213667A1 - 显示面板和显示装置 - Google Patents

显示面板和显示装置

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Publication number
WO2025213667A1
WO2025213667A1 PCT/CN2024/113266 CN2024113266W WO2025213667A1 WO 2025213667 A1 WO2025213667 A1 WO 2025213667A1 CN 2024113266 W CN2024113266 W CN 2024113266W WO 2025213667 A1 WO2025213667 A1 WO 2025213667A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
refractive
substrate
refractive layer
display panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/113266
Other languages
English (en)
French (fr)
Inventor
齐璞玉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Chengdu BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Publication of WO2025213667A1 publication Critical patent/WO2025213667A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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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
    • 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
    • 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
    • H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers

Definitions

  • the embodiments of the present disclosure belong to the field of display technology, and particularly relate to a display panel and a display device.
  • OLED Organic Light-Emitting Diode
  • an embodiment of the present disclosure provides a display panel, comprising a display substrate, a black matrix, a first refractive layer, a second refractive layer, and a color filter layer.
  • the display substrate includes a base, a pixel defining layer and a light-emitting element.
  • the pixel defining layer is located on one side of the base.
  • An opening is formed in the pixel defining layer, and the light-emitting element is located in the opening.
  • the black matrix and the color filter layer are stacked in sequence away from the display substrate.
  • the first refractive layer and the second refractive layer are located between the color filter layer and the black matrix
  • the first refractive layers and the second refractive layers are alternately distributed and contact each other.
  • the refractive index of the second refractive layer is greater than or equal to the refractive index of the first refractive layer.
  • the orthographic projection of the second refractive layer on the substrate covers the orthographic projection of the light emitting element on the substrate.
  • the color filter layer includes a plurality of color filters of different colors, and the plurality of color filters of different colors are connected to a plurality of Optical components correspond one to one,
  • the orthographic projection of a corresponding color film among the plurality of color films on the substrate covers the orthographic projection of the second refractive layer and the light emitting element on the substrate.
  • the second refractive layer does not overlap with the orthographic projection of the black matrix on the substrate.
  • Adjacent side surfaces of the first refractive layer and the second refractive layer are butted together to form a butting interface, and an acute angle is formed between the butting interface and a side surface of the first refractive layer close to the display substrate.
  • the orthographic projection of the first refractive layer on the substrate covers the orthographic projection of the black matrix on the substrate.
  • the orthographic projection of the first refractive layer on the substrate is located within the orthographic projection area of the pixel defining layer on the substrate.
  • the color filter partially overlaps with an orthographic projection of the first refractive layer located around the corresponding light-emitting element on the substrate.
  • the color filter and the orthographic projection of the black matrix located around the corresponding light-emitting element on the substrate at least partially overlap.
  • the orthographic projections of the color filter, the corresponding light-emitting element, and the area outside the black matrix surrounding the corresponding light-emitting element on the substrate do not overlap.
  • the refractive index of the second refractive layer is greater than the refractive index of the first refractive layer.
  • a distance between a surface of the second refractive layer on a side away from the display substrate and the display substrate is less than or equal to a distance between a surface of the first refractive layer on a side away from the display substrate and the display substrate.
  • the refractive index of the second refractive layer is equal to the refractive index of the first refractive layer, and the refractive index of the color filter layer is greater than the refractive index of the first refractive layer.
  • the distance between the surface of the second refractive layer on the side away from the display substrate and the display substrate is smaller than the distance between the surface of the first refractive layer on the side away from the display substrate and the display substrate. distance.
  • the acute angle ranges from 50° to 70°.
  • the distance between the corresponding side boundaries of the first refractive layer and the pixel defining layer ranges from 0 to 2 ⁇ m.
  • the distance between the pixel defining layer and corresponding side boundaries of the black matrix ranges from 3 ⁇ m to 6 ⁇ m.
  • the thickness of the black matrix ranges from 0.8 to 1.5 ⁇ m
  • the distance between the surface of the first refractive layer on the side away from the display substrate and the display substrate is in the range of 2 to 4 ⁇ m;
  • the thickness of the second refractive layer ranges from 1.5 to 4 ⁇ m
  • the thickness of the portion of the color film overlapping the opening is in the range of 2 to 4.5 ⁇ m;
  • the thickness of the portion of the color film that overlaps with the first refractive layer and does not overlap with the black matrix ranges from 1.5 to 4 ⁇ m.
  • the refractive index of the second refractive layer is greater than 1.5, and the refractive index of the first refractive layer is in the range of 1.3 to 1.5;
  • the refractive index of the first refractive layer and the refractive index of the second refractive layer are both in the range of 1.3 to 1.5.
  • the transmittance of the first refractive layer and the second refractive layer are both greater than or equal to 90%.
  • a protective layer is further included, which is located on a side of the color filter layer away from the display substrate.
  • the orthographic projection of the protective layer on the substrate covers the orthographic projection of the color filter layer on the substrate;
  • the protective layer and the first refractive layer or the second refractive layer are made of the same material.
  • an embodiment of the present disclosure further provides a display device, which includes the above-mentioned display panel.
  • FIG. 1 a is a schematic cross-sectional view of a local structure of a display panel in the related art.
  • FIG1 b is a schematic cross-sectional view of a partial structure of another display panel in the related art.
  • FIG. 1 c is a schematic cross-sectional view of a partial structure of another display panel in the related art.
  • FIG1 d is a schematic cross-sectional view of a partial structure of another display panel in the related art.
  • FIG2 a is a schematic cross-sectional view of a partial structure of a display panel according to an embodiment of the present disclosure.
  • FIG2 b is a schematic cross-sectional view of a partial structure of another display panel according to an embodiment of the present disclosure.
  • FIG2 c is a schematic cross-sectional view of a partial structure of another display panel according to an embodiment of the present disclosure.
  • FIG2 d is a schematic cross-sectional view of a partial structure of another display panel according to an embodiment of the present disclosure.
  • the color film structure and the efficiency improvement structure can be used as two structures to improve the light output efficiency of OLED display panels.
  • the combination of the color film structure and the efficiency improvement structure can achieve the optimal light output efficiency of the OLED display panel and minimize the power consumption of the OLED display panel. It is a new integrated technology that has attracted much attention.
  • the display panel includes a display substrate 1, a pixel defining layer 11 and a light emitting Element 12, pixel defining layer 11 is located on one side of display substrate 1, an opening is opened in pixel defining layer 11, and light-emitting element 12 is located in the opening.
  • Efficiency improvement structure 7 is composed of a low refractive index film layer 71 and a high refractive index film layer 72 stacked together.
  • the color filter structure includes a black matrix 2 and color filters 50 of different colors.
  • the color filter 50 and the high refractive index film layer 72 are arranged at least corresponding to the light-emitting element 12, and the black matrix 2 and the low refractive index film layer 71 are arranged corresponding to the pixel defining layer 11.
  • a flat layer 8 is also provided between the color filter structure and efficiency improvement structure 7.
  • a color filter structure and an efficiency-enhancing structure 7 are stacked above the encapsulation layer 14 of an OLED display substrate 1.
  • the color filter structure is placed on the side of the efficiency-enhancing structure 7 closest to the display substrate 1, while the low-refractive-index film layer 71 and the high-refractive-index film layer 72 in the efficiency-enhancing structure 7 are stacked in order away from the color filter structure.
  • This structure has no significant effect on L decay (i.e., the difference in light intensity between light emitted at a 0° exit angle and light emitted at other exit angles).
  • the reflectivity of the entire display panel can deteriorate by up to 0.6% compared to a conventional method in which a color filter structure is placed on the display side of the display substrate 1 (see FIG1c ).
  • the color filter structure is placed on the side of the efficiency improvement structure 7 away from the display substrate 1.
  • the dark state effect of the display panel of this structure is close to the effect of conventionally setting the color filter structure on the display side of the display substrate 1 (refer to Figure 1c).
  • L decay i.e., the difference in light intensity between the outgoing light at an exit angle of 0° and the outgoing light at other exit angles
  • the OLED display panel structures in FIG. 1a and FIG. 1b cannot adjust the overall optical effect to a better state.
  • one approach to improve the efficiency is to remove the high-refractive-index film layer in the efficiency-enhancing structure 7 and place a low-refractive-index film layer 71 between the black matrix 2 and the color filter 50.
  • This improves light extraction efficiency by utilizing the refractive index difference at the interface between the low-refractive-index film layer 71 in the efficiency-enhancing structure 7 and the color filter 50 in the color filter structure.
  • practical verification has shown that this structural solution is difficult to implement in terms of process. This is because the stacking of the black matrix 2 and the low-refractive-index film layer 71 creates a large pit in the opening area, causing the color filter 50 to be significantly thicker than the designed value.
  • the black matrix 2 and the low-refractive-index film layer 71 ranges from 1 to 1.5 ⁇ m, and the thickness of the color filter 50 ranges from 2 to 4 ⁇ m.
  • the total thickness of the black matrix 2 and the low-refractive-index film layer 71 stack can reach nearly 3 to 4 ⁇ m, resulting in a significant increase in the thickness of the color filter 50, reaching 3 to 6 ⁇ m. This will seriously affect the light extraction efficiency of the entire display panel, resulting in poor power consumption and lifespan of the entire display panel.
  • the embodiment of the present disclosure provides a display panel that can adjust the L decay effect and reflectivity effect to a better state while improving the efficiency.
  • the display panel includes a display substrate 1, a black matrix 2, a first refractive layer 3, a second refractive layer 4, and a color filter layer 5.
  • the display substrate 1 includes a base 10, a pixel defining layer 11, and a plurality of light-emitting elements 12.
  • the pixel defining layer 11 is located on one side of the base 10 and has a plurality of openings 110 defined therein.
  • the light-emitting elements 12 are located within these openings 110.
  • the black matrix 2 and the color filter layer 5 are stacked, sequentially away from the display substrate 1.
  • the first refractive layer 3 and the second refractive layer 4 are located between the color filter layer 5 and the black matrix 2.
  • the first refractive layers 3 and the second refractive layers 4 are alternately distributed and in contact with each other.
  • the orthographic projections of any two of the first refractive layer 3, the black matrix 2, and the pixel defining layer 11 on the base 10 overlap.
  • the orthographic projections of any two of the color filter layer 5, the second refractive layer 4, and the light-emitting elements 12 on the base 10 overlap.
  • the first refractive layer 3, the second refractive layer 4, and the color filter layer 5 are in contact with each other, and the refractive index of the second refractive layer 4 is greater than or equal to that of the first refractive layer 3.
  • the first refractive layer 3 and the second refractive layer 4 are alternately distributed.
  • the second refractive layer 4 having a higher refractive index than the first refractive layer 3 in this embodiment is patterned, and the orthographic projection of the pattern of the second refractive layer 4 on the substrate 10 intersects with the orthographic projection of the light-emitting elements 12 and the color filter layer 5 on the substrate 10.
  • a refractive index difference can be achieved at the contact interface between the first refractive layer 3, the second refractive layer 4 and the color filter layer 5, so that the light irradiated on the contact interface is refracted into the area corresponding to the opening 110, thereby improving the light extraction efficiency of the light-emitting element 12;
  • the thickness of the color filter layer 5 remains unchanged, and most of the external ambient light can be absorbed by the color filter layer 5, so that the reflectivity of the display panel will not deteriorate;
  • the L decay i.e., the difference in light intensity between the light emitted at an exit angle of 0° and the light emitted at other exit angles
  • the orthographic projection of the second refractive layer 4 on the substrate 10 covers the orthographic projection of the light-emitting element 12 on the substrate 10, and the color filter layer 5 includes a plurality of color filters 50 of different colors.
  • the plurality of color filters 50 of different colors correspond one-to-one to the plurality of light-emitting elements 12, and the orthographic projection of the color filters 50 on the substrate 10 covers the orthographic projections of the second refractive layer 4 and the light-emitting element 12 on the substrate 10.
  • the second refractive layer 4 and the orthographic projection of the black matrix 2 on the substrate 10 do not overlap, and adjacent side surfaces of the first refractive layer 3 and the second refractive layer 4 are butted against each other to form a butt interface p.
  • the butt interface p forms an acute angle ⁇ with a side surface of the first refractive layer 3 close to the display substrate 1.
  • the aforementioned interface p can cause light incident thereon to refract toward the region corresponding to the opening 110, thereby improving the light extraction efficiency of the light-emitting element 12.
  • the color filter layer 5 also contacts the interface p of the first refractive layer 3.
  • the interface between the color filter layer 5 and the first refractive layer 3 can cause light incident thereon to refract toward the region corresponding to the opening 110, thereby improving the light extraction efficiency of the light-emitting element 12.
  • the acute angle ⁇ is in the range of 50 to 70 degrees.
  • the acute angle ⁇ in this range can cause total reflection of light that passes through the color filter layer 5 and the second refractive layer 4 and is irradiated onto the interface p, thereby improving the light output effect of the display panel at a 0-degree output angle, and facilitating the collimated light output effect of the display panel.
  • the orthographic projection of the first refractive layer 3 on the substrate 10 covers the orthographic projection of the black matrix 2 on the substrate 10 , and the orthographic projection of the first refractive layer 3 on the substrate 10 is located within the orthographic projection region of the pixel defining layer 11 on the substrate 10 .
  • a distance s1 between corresponding side boundaries of the first refractive layer 3 and the pixel defining layer 11 ranges from 0 to 2 ⁇ m
  • a distance s2 between corresponding side boundaries of the pixel defining layer 11 and the black matrix 1 ranges from 3 to 6 ⁇ m.
  • the color filter 50 partially overlaps with the orthographic projection of the first refractive layer 3 located around its corresponding light emitting element 12 on the substrate 10 .
  • the orthographic projections of the color filter 50 and the black matrix 2 surrounding its corresponding light-emitting element 12 on the substrate 10 at least partially overlap, while the orthographic projections of the color filter 50, its corresponding light-emitting element 12, and the areas outside the black matrix 2 surrounding its corresponding light-emitting element 12 on the substrate 10 do not overlap.
  • This arrangement ensures that color filters 50 of different colors correspond to light-emitting elements 12 of different colors, preventing the color filter 50 from causing cross-color interference in the emission colors of light-emitting elements 12 adjacent to its corresponding light-emitting element 12.
  • the refractive index of the second refractive layer 4 is greater than the refractive index of the first refractive layer 3, and the distance h1 between the surface of the second refractive layer 4 on the side away from the display substrate 1 and the display substrate 1 is less than (refer to FIG. 2a) or equal to (refer to FIG. 2b) the distance h2 between the surface of the first refractive layer 3 on the side away from the display substrate 1 and the display substrate 1.
  • the color filter 50 also extends to partially overlap with the first refractive layer 3 located around the corresponding light-emitting element 12.
  • the thickness of the portion of the color filter 50 overlapping with the first refractive layer 3 and not overlapping with the black matrix 2 is equal to or slightly different from the thickness of the central portion of the color filter 50 (that is, the portion overlapping with both the light-emitting element 12 and the second refractive layer 4). Therefore, the color filter 50 can effectively absorb external ambient light and prevent the reflectivity of the display panel from deteriorating.
  • using the second refractive layer 4 for cushioning can maximize the area of the contact interface between the first refractive layer 3 and the second refractive layer 4, thereby ensuring that the first refractive layer 3 and the second refractive layer 4 improve the efficiency of the display panel.
  • the refractive index of the second refractive layer 4 is equal to that of the first refractive layer 3.
  • the first refractive layer 3 and the second refractive layer 4 are made of the same material.
  • the thickness of the portion of the color filter layer 5 overlapping with the first refractive layer 3 and not overlapping with the black matrix 2 is substantially similar to the thickness of the central portion of the color filter layer 5 (i.e., the portion overlapping with both the light-emitting element 12 and the second refractive layer 4).
  • the color filter layer 5 can effectively absorb ambient light and prevent deterioration in the reflectivity of the display panel.
  • the distance h1 between the surface of the second refractive layer 4 on the side away from the display substrate 1 and the display substrate 1 is smaller than the distance h2 between the surface of the first refractive layer 3 on the side away from the display substrate 1 and the display substrate 1.
  • the area of the contact interface between the first refractive layer 3, the second refractive layer 4, and the color filter layer 5, where the film layers have different refractive indices is equal to the area of the contact interface between the first refractive layer 3 and the color filter layer 5. That is, the area of the contact interface between the film layers having different refractive indices is relatively reduced.
  • the light extraction efficiency of the display panel in this embodiment is slightly lower than that of a display panel in which the refractive index of the second refractive layer 4 is greater than that of the first refractive layer 3. The differences in other optical indicators between the two are not significant.
  • the thickness d1 of the black matrix 2 ranges from 0.8 to 1.5 ⁇ m; the distance h2 between the surface of the first refractive layer 3 facing away from the display substrate 1 and the display substrate 1 ranges from 2 to 4 ⁇ m; the thickness h1 of the second refractive layer 4 ranges from 1.5 to 4 ⁇ m; the thickness d2 of the portion of the color filter 50 overlapping with the opening 110 ranges from 2 to 4.5 ⁇ m; and the thickness d3 of the portion of the color filter 50 overlapping with the first refractive layer 3 and not overlapping with the black matrix 2 ranges from 1.5 to 4 ⁇ m.
  • the thickness d2 of the portion of the color filter 50 overlapping with the opening 110 is substantially similar to the thickness d3 of the portion of the color filter 50 overlapping with the first refractive layer 3 and not overlapping with the black matrix 2.
  • the color filter 50 can effectively absorb ambient light and prevent the reflectivity of the display panel from deteriorating.
  • the display panel schemes in FIG. 1a, FIG. 1b, and FIG. 1d and the first embodiment in FIG. 2a are combined.
  • a display panel solution in which the refractive index of the second refractive layer 4 is greater than the refractive index of the first refractive layer 3 its Ldecay effect and reflectivity effect are shown in Table 1 below.
  • the refractive index of the second refractive layer 4 is greater than 1.5, and the refractive index of the first refractive layer 3 is in the range of 1.3 to 1.5; or, the refractive index of both the first refractive layer 3 and the second refractive layer 4 is in the range of 1.3 to 1.5.
  • the transmittance of the first refractive layer 3 and the second refractive layer 4 are both greater than or equal to 90%.
  • the display panel further includes a protective layer 6 located on the side of the color filter layer 5 facing away from the display substrate 1 , and the orthographic projection of the protective layer 6 on the substrate 10 covers the orthographic projection of the color filter layer 5 on the substrate 10 ; the protective layer 6 and the first refractive layer 3 or the second refractive layer 4 are made of the same material.
  • the protective layer 6 , the first refractive layer 3 and the second refractive layer 4 are all made of organic resin materials, such as polyimide, polyurethane and the like.
  • the display substrate 1 further includes a pixel circuit 13 and an encapsulation layer 14.
  • the pixel circuit 13 is disposed between the pixel defining layer 11 and the substrate 10.
  • the encapsulation layer 14 is located on the side of the light-emitting element 12 and the pixel defining layer 11 away from the substrate 10.
  • the encapsulation layer 14 encapsulates the light-emitting element 12.
  • the encapsulation layer 14 includes an inorganic encapsulation layer and an organic encapsulation layer stacked in sequence, and the surface of the encapsulation layer 14 on the side away from the substrate 10 is a plane.
  • the black matrix 2, the first refractive layer 3, the second refractive layer 4 and the color filter layer 5 are sequentially disposed above the plane of the encapsulation layer 14.
  • the light-emitting element 12 includes an anode 121, a light-emitting functional layer 122 and a cathode 123.
  • the anode 121, the light-emitting functional layer 122 and the cathode 123 are sequentially stacked away from the substrate 10.
  • the anode 121 is located on the side of the light-emitting element 12 and the pixel defining layer 11.
  • the orthographic overlapping area of 121 , the light-emitting functional layer 122 and the cathode 123 located in the opening 110 of the pixel defining layer 11 is the effective light-emitting area of the light-emitting element 12 .
  • preparing the display panel includes sequentially preparing a black matrix, a first refractive layer, a second refractive layer, and a color filter layer on one side of the display substrate, wherein the black matrix, the first refractive layer, the second refractive layer, and the color filter layer are respectively prepared by coating, exposure, and development processes.
  • manufacturing the display panel when the refractive index of the second refractive layer is equal to that of the first refractive layer, manufacturing the display panel includes first forming a black matrix on one side of the display substrate, then forming the first and second refractive layers through a halftone exposure process, and finally forming the color filter layer.
  • the black matrix and color filter layers are separately formed through coating, exposure, and development processes, while the first and second refractive layers are simultaneously formed through coating, halftone exposure, and development processes.
  • the halftone exposure process eliminates one masking step.
  • the display panel provided in the present embodiment patterns the second refractive layer having a higher refractive index than the first refractive layer, and the pattern of the second refractive layer overlaps with the light-emitting element and the color filter layer.
  • a refractive index difference at the contact interface between the first refractive layer, the second refractive layer and the color filter layer can be achieved, so that the light irradiated on the contact interface is refracted into the area corresponding to the opening, thereby improving the light extraction efficiency of the light-emitting element;
  • the thickness of the color filter layer remains unchanged, and most of the external ambient light can be absorbed by the color filter layer, so that the reflectivity of the display panel will not deteriorate;
  • the L decay i.e., the difference in light intensity between the light emitted at an exit angle of 0° and the light emitted at other exit angles
  • An embodiment of the present disclosure further provides a display device, comprising the display panel in the above embodiment.
  • the efficiency of the display device can be improved while the L decay effect and reflectivity effect of the display device can be adjusted to a better state.
  • the display device provided in the embodiments of the present disclosure may be any product or component with a display function, such as an OLED panel, an OLED TV, an OLED billboard, a display, a mobile phone, or a navigation system.
  • a display function such as an OLED panel, an OLED TV, an OLED billboard, a display, a mobile phone, or a navigation system.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种显示面板和显示装置。显示面板包括显示基板、黑矩阵、第一折射层、第二折射层和彩膜层，显示基板包括基底、像素界定层和多个发光元件，像素界定层位于基底一侧，像素界定层中开设有开口，发光元件位于开口中；黑矩阵和彩膜层依次远离显示基板叠置，第一折射层和第二折射层位于彩膜层和黑矩阵之间；沿发光元件的任意排布方向，第一折射层和第二折射层交替分布且相互接触，第一折射层、黑矩阵和像素界定层在基底上的正投影交叠；彩膜层、第二折射层和发光元件在基底上的正投影交叠；第二折射层的折射率大于或者等于第一折射层的折射率。

Description

显示面板和显示装置 技术领域
本公开实施例属于显示技术领域，具体涉及一种显示面板和显示装置。
背景技术
OLED(Organic Light-Emitting Diode，有机发光二极管)显示屏以其自发光、功耗低、轻薄、可挠性、色彩绚丽、对比度高、响应速率快等优势，受到广泛的关注。
发明内容
一方面，本公开实施例提供一种显示面板，包括显示基板、黑矩阵、第一折射层、第二折射层和彩膜层，
其中，所述显示基板包括基底、像素界定层和发光元件，所述像素界定层位于所述基底一侧，所述像素界定层中开设有开口，所述发光元件位于所述开口中；
所述黑矩阵和所述彩膜层依次远离所述显示基板叠置，
其中，所述第一折射层和所述第二折射层位于所述彩膜层和所述黑矩阵之间；
沿所述发光元件的任意排布方向，所述第一折射层和所述第二折射层交替分布且相互接触，
第一折射层、所述黑矩阵和所述像素界定层中的任意两者在所述基底上的正投影交叠；所述彩膜层、所述第二折射层和所述发光元件中的任意两者在所述基底上的正投影交叠；
所述第二折射层的折射率大于或者等于所述第一折射层的折射率。
在一些实施例中，所述第二折射层在所述基底上的正投影覆盖所述发光元件在所述基底上的正投影，
所述彩膜层包括多个不同颜色的彩膜，所述多个不同颜色的彩膜与多个发 光元件一一对应，
所述多个彩膜中的相应彩膜在所述基底上的正投影覆盖所述第二折射层和所述发光元件在所述基底上的正投影。
在一些实施例中，所述第二折射层与所述黑矩阵在所述基底上的正投影不交叠，
所述第一折射层和所述第二折射层的相邻的侧表面对接形成对接界面，所述对接界面与所述第一折射层的靠近所述显示基板的一侧表面之间成锐角夹角。
在一些实施例中，所述第一折射层在所述基底上的正投影覆盖所述黑矩阵在所述基底上的正投影，
所述第一折射层在所述基底上的正投影位于所述像素界定层在所述基底上的正投影区域内。
在一些实施例中，所述彩膜与位于其对应的所述发光元件周围的所述第一折射层在所述基底上的正投影局部交叠。
在一些实施例中，所述彩膜与位于其对应的所述发光元件周围的所述黑矩阵在所述基底上的正投影至少局部交叠，
所述彩膜与其对应的所述发光元件和其对应的所述发光元件周围的所述黑矩阵以外的区域在所述基底上的正投影不交叠。
在一些实施例中，所述第二折射层的折射率大于所述第一折射层的折射率，
所述第二折射层的远离所述显示基板的一侧表面与所述显示基板之间的距离小于或者等于所述第一折射层的远离所述显示基板的一侧表面与所述显示基板之间的距离。
在一些实施例中，所述第二折射层的折射率等于所述第一折射层的折射率，所述彩膜层的折射率大于所述第一折射层的折射率，
所述第二折射层的远离所述显示基板的一侧表面与所述显示基板之间的距离小于所述第一折射层的远离所述显示基板的一侧表面与所述显示基板之间的 距离。
在一些实施例中，所述锐角夹角的角度范围为50～70°。
在一些实施例中，所述第一折射层和所述像素界定层的相应侧边界之间的距离范围为0～2μm，
所述像素界定层和所述黑矩阵的相应侧边界之间的距离范围为3～6μm。
在一些实施例中，所述黑矩阵的厚度范围为0.8～1.5μm；
所述第一折射层的远离所述显示基板的一侧表面与所述显示基板之间的距离范围为2～4μm；
所述第二折射层的厚度范围为1.5～4μm；
所述彩膜的与所述开口交叠部分的厚度范围为2～4.5μm；
所述彩膜的与所述第一折射层交叠且与所述黑矩阵不交叠部分的厚度范围为1.5～4μm。
在一些实施例中，所述第二折射层的折射率大于1.5，所述第一折射层的折射率范围为1.3～1.5；
或者，所述第一折射层和所述第二折射层的折射率范围均为1.3～1.5。
在一些实施例中，所述第一折射层和所述第二折射层的透过率均大于或者等于90％。
在一些实施例中，还包括保护层，位于所述彩膜层的背离所述显示基板的一侧，
所述保护层在所述基底上的正投影覆盖所述彩膜层在所述基底上的正投影；
所述保护层与所述第一折射层或者所述第二折射层采用相同材料。
另一方面，本公开实施例还提供一种显示装置，其中，包括上述显示面板。
附图说明
附图用来提供对本公开实施例的进一步理解，并且构成说明书的一部分， 与本公开实施例一起用于解释本公开，并不构成对本公开的限制。通过参考附图对详细示例实施例进行描述，以上和其它特征和优点对本领域技术人员将变得更加显而易见，在附图中：
图1a为相关技术中一种显示面板的局部结构剖视示意图。
图1b为相关技术中另一种显示面板的局部结构剖视示意图。
图1c为相关技术中再一种显示面板的局部结构剖视示意图。
图1d为相关技术中又一种显示面板的局部结构剖视示意图。
图2a为本公开实施例中一种显示面板的局部结构剖视示意图。
图2b为本公开实施例中另一种显示面板的局部结构剖视示意图。
图2c为本公开实施例中再一种显示面板的局部结构剖视示意图。
图2d为本公开实施例中又一种显示面板的局部结构剖视示意图。
具体实施方式
为使本领域技术人员更好地理解本公开实施例的技术方案，下面结合附图和具体实施方式对本公开实施例提供的一种显示面板和显示装置作进一步详细描述。
在下文中将参考附图更充分地描述本公开实施例，但是所示的实施例可以以不同形式来体现，且不应当被解释为限于本公开阐述的实施例。反之，提供这些实施例的目的在于使本公开透彻和完整，并将使本领域技术人员充分理解本公开的范围。
本公开实施例不限于附图中所示的实施例，而是包括基于制造工艺而形成的配置的修改。因此，附图中例示的区具有示意性属性，并且图中所示区的形状例示了区的具体形状，但并不是旨在限制性的。
彩膜结构和效率提升结构可作为提升OLED显示面板出光效率的两种结构，彩膜结构和效率提升结构搭配起来，可以实现OLED显示面板的最优出光效率，将OLED显示面板的功耗降到最低，是一种备受关注的新型集成技术。
其中，参照图1a-图1d，显示面板包括显示基板1、像素界定层11和发光 元件12，像素界定层11位于显示基板1一侧，像素界定层11中开设有开口，发光元件12位于开口中。效率提升结构7由低折射率膜层71和高折射率膜层72叠置构成。彩膜结构包括黑矩阵2和不同颜色的彩膜50。彩膜50和高折射率膜层72至少对应发光元件12设置，黑矩阵2和低折射率膜层71对应像素界定层11设置。彩膜结构与效率提升结构7之间还设置有平坦层8。
相关技术中，参照图1a，将彩膜结构和效率提升结构7堆叠设置于OLED显示基板1的封装层14上方，彩膜结构置于效率提升结构7的靠近显示基板1的一侧，效率提升结构7中低折射率膜层71和高折射率膜层72依次远离彩膜结构叠置。该结构对L decay(即0°出射角的出射光和其他出射角的出射光的光强差异)无明显影响，但是由于效率提升结构7中高折射率膜层72与低折射率膜层71的接触界面暴露在显示基板1的最外侧，会导致整个显示面板的反射率比常规在显示基板1的显示侧设置彩膜结构(参照图1c)恶化可达0.6％。
参照图1b，将彩膜结构置于效率提升结构7的远离显示基板1的一侧，该结构的显示面板的暗态效果与常规在显示基板1的显示侧设置彩膜结构(参照图1c)的效果接近，但是由于彩膜结构中的黑矩阵2相对于图1a中黑矩阵2的设置位置上移，会导致L decay(即0°出射角的出射光和其他出射角的出射光的光强差异)恶化严重。
综上，图1a和图1b中的OLED显示面板结构无法将光学效果整体调整到较优状态。
鉴于上述问题，参照图1d，一种改善思路是将效率提升结构7中的高折射率膜层去除，并将低折射率膜层71设置于黑矩阵2和彩膜50之间，利用效率提升结构7中的低折射率膜层71和彩膜结构中彩膜50之间的接触界面处的折射率差实现出光效率提升效果。但是经过实际验证，这种结构方案在工艺上的实现难度较大，原因是黑矩阵2和低折射率膜层71堆叠后，其形成的开口区凹坑较大，导致彩膜50厚度明显比设计值偏厚。
参照图1c，在显示基板1的显示侧仅设置有彩膜结构，该结构中黑矩阵2 的厚度范围为1～1.5μm，彩膜50的厚度范围为2～4μm。在图1d所示的显示面板中，黑矩阵2和低折射率膜层71堆叠的总厚度可以达到接近3～4μm，导致彩膜50厚度明显增厚，可达到3～6μm。这将严重影响整个显示面板的出光效率，导致整个显示面板的功耗和寿命等效果不佳。
另外，在图1d所示的显示面板中，即使彩膜50的厚度通过调整工艺能力保持在设计值，还存在一个问题，即存在一个彩膜50的厚度很薄且无黑矩阵2覆盖的区域，该区域反射率很高(该区域的反射主要通过彩膜50与低折射率膜层71的接触界面反射)，导致整个显示面板反射率比常规在显示基板1的显示侧设置彩膜结构(参照图1c)恶化严重，仿真恶化值可达1％。
为了解决相关技术中在提升OLED显示面板效率的同时无法将其光学效果整体调整到较优状态的问题，本公开实施例提供一种显示面板，该显示面板在提升效率的同时还能将L decay效果和反射率效果调整到较优状态。
参照图2a，显示面板包括显示基板1、黑矩阵2、第一折射层3、第二折射层4和彩膜层5。显示基板1包括基底10、像素界定层11和多个发光元件12，像素界定层11位于基底10一侧，像素界定层11中开设有多个开口110，发光元件12位于开口110中。黑矩阵2和彩膜层5依次远离显示基板1叠置，第一折射层3和第二折射层4位于彩膜层5和黑矩阵2之间。沿发光元件12的任意排布方向，第一折射层3和第二折射层4交替分布且相互接触，第一折射层3、黑矩阵2和像素界定层11中的任意两者在基底10上的正投影交叠；彩膜层5、第二折射层4和发光元件12中的任意两者在基底10上的正投影交叠；第一折射层3、第二折射层4和彩膜层5相互接触，第二折射层4的折射率大于或者等于第一折射层3的折射率。
通过使第一折射层3和第二折射层4位于彩膜层5和黑矩阵2之间，且沿发光元件12的任意排布方向，第一折射层3和第二折射层4交替分布，相比于相关技术中效率提升结构的高折射率膜层72的结构设置，本实施例中折射率高于第一折射层3的第二折射层4进行了图形化设置，且第二折射层4的图形在基底10上的正投影与发光元件12和彩膜层5在基底10上的正投影交 叠，相比于相关技术中图1d中的方案，一方面，能实现第一折射层3与第二折射层4和彩膜层5之间接触界面的折射率差异，使照射到接触界面的光向开口110对应区域内折射，从而提升发光元件12的出光效率；另一方面，相比于相关技术中图1d中的方案，彩膜层5的厚度保持不变，大部分外界环境光都能被彩膜层5吸收，从而使显示面板的反射率不会恶化；再一方面，相比于相关技术中图1b中的方案，由于黑矩阵2相对于显示基板1的位置未发生变化，从而本实施例中显示面板的L decay(即0°出射角的出射光和其他出射角的出射光的光强差异)效果也较优；进而在提升显示面板效率的同时还能将显示面板的L decay效果和反射率效果调整到较优状态。
在一些实施例中，参照图2a，第二折射层4在基底10上的正投影覆盖发光元件12在基底10上的正投影，彩膜层5包括多个不同颜色的彩膜50，多个不同颜色的彩膜50与多个发光元件12一一对应，彩膜50在基底10上的正投影覆盖第二折射层4和发光元件12在基底10上的正投影。
在一些实施例中，参照图2a，第二折射层4与黑矩阵2在基底10上的正投影不交叠，第一折射层3和第二折射层4的相邻的侧表面对接形成对接界面p，对接界面p与第一折射层3的靠近显示基板1的一侧表面之间成锐角夹角θ。
当第二折射层4的折射率大于第一折射层3的折射率时，上述对接界面p能使照射到其上的光向开口110对应区域内折射，从而提升发光元件12的出光效率。同时，彩膜层5也与第一折射层3的该对接界面p接触，从而当第二折射层4的折射率等于第一折射层3的折射率并且彩膜层5的折射率大于第一折射层3的折射率时，彩膜层5与第一折射层3的接触界面能使照射到其上的光向开口110对应区域内折射，从而提升发光元件12的出光效率。
在一些实施例中，锐角夹角θ的角度范围为50～70°。该角度范围的锐角夹角θ，能使经过彩膜层5和第二折射层4照射到该对接界面p上的光发生全反射，从而提升显示面板0度出射角的出射光线的出光效果，有利于实现该显示面板的准直出光效果。
在一些实施例中，参照图2a，第一折射层3在基底10上的正投影覆盖黑矩阵2在基底10上的正投影，第一折射层3在基底10上的正投影位于像素界定层11在基底10上的正投影区域内。
在一些实施例中，参照图2a，第一折射层3和像素界定层11的相应侧边界之间的距离s1范围为0～2μm，像素界定层11和黑矩阵1的相应侧边界之间的距离s2范围为3～6μm。
在一些实施例中，参照图2a，彩膜50与位于其对应的发光元件12周围的第一折射层3在基底10上的正投影局部交叠。
在一些实施例中，参照图2a，彩膜50与位于其对应的发光元件12周围的黑矩阵2在基底10上的正投影至少局部交叠，彩膜50与其对应的发光元件12和其对应的发光元件12周围的黑矩阵2以外的区域在基底10上的正投影不交叠。如此设置，能确保不同颜色的彩膜50对应不同颜色的发光元件12，避免彩膜50对与其对应的发光元件12相邻的发光元件12的发光颜色造成串色干扰。
在一些实施例中，第二折射层4的折射率大于第一折射层3的折射率，第二折射层4的远离显示基板1的一侧表面与显示基板1之间的距离h1小于(参照图2a)或者等于(参照图2b)第一折射层3的远离显示基板1的一侧表面与显示基板1之间的距离h2。
其中，彩膜50还延伸至与位于其对应的发光元件12周围的第一折射层3局部交叠，相比于相关技术中图1d中的方案，一方面，由于第二折射层4的垫高作用，使彩膜50的与第一折射层3交叠且与黑矩阵2不交叠部分的厚度和与彩膜50的中央部分(即，与发光元件12和第二折射层4都交叠部分)的厚度相等或者相差不大，从而彩膜50可有效吸收外界环境光，防止显示面板的反射率恶化；另一方面，使用第二折射层4垫高，可最大程度保证第一折射层3和第二折射层4之间接触界面的面积，从而保证第一折射层3和第二折射层4对显示面板效率的提升。
在一些实施例中，参照图2c，第二折射层4的折射率等于第一折射层3的 折射率，彩膜层5的折射率大于第一折射层3的折射率，第二折射层4的远离显示基板1的一侧表面与显示基板1之间的距离h1小于第一折射层3的远离显示基板1的一侧表面与显示基板1之间的距离h2。
本实施例中，第一折射层3和第二折射层4采用相同材料，相比于相关技术图1d中的方案，一方面，由于第二折射层4的垫高作用，使彩膜层5的与第一折射层3交叠且与黑矩阵2不交叠部分的厚度和彩膜层5的中央部分(即，与发光元件12和第二折射层4都交叠部分)的厚度相差不大，从而彩膜层5可有效吸收外界环境光，防止显示面板的反射率恶化；另一方面，第二折射层4的远离显示基板1的一侧表面与显示基板1之间的距离h1小于第一折射层3的远离显示基板1的一侧表面与显示基板1之间的距离h2，可确保第一折射层3和彩膜层5之间接触界面的面积，从而保证第一折射层3和彩膜层5之间的折射率差异对显示面板效率的提升。在本实施例中，与第二折射层4的折射率大于第一折射层3的折射率的显示面板不同的是，在实际效果上，第一折射层3、第二折射层4和彩膜层5之间具有折射率差异的膜层接触界面的面积为第一折射层3和彩膜层5之间的接触界面的面积，即具有折射率差异的膜层接触界面的面积相对减小，以致本实施例中显示面板的出光效率会略差于第二折射层4的折射率大于第一折射层3的折射率的显示面板，二者其他光学指标的差异不大。
在一些实施例中，参照图2d，黑矩阵2的厚度d1范围为0.8～1.5μm；第一折射层3的远离显示基板1的一侧表面与显示基板1之间的距离h2范围为2～4μm；第二折射层4的厚度h1范围为1.5～4μm；彩膜50的与开口110交叠部分的厚度d2范围为2～4.5μm；彩膜50的与第一折射层3交叠且与黑矩阵2不交叠部分的厚度d3范围为1.5～4μm。可见，彩膜50的与开口110交叠部分的厚度d2与彩膜50的与第一折射层3交叠且与黑矩阵2不交叠部分的厚度d3相差不大，从而彩膜50可有效吸收外界环境光，防止显示面板的反射率恶化。
在一些实施例中，将图1a、图1b、图1d中的显示面板方案和图2a中第 二折射层4的折射率大于第一折射层3的折射率的显示面板方案相对比，其Ldecay效果和反射率效果如下表1。
表1
在一些实施例中，第二折射层4的折射率大于1.5，第一折射层3的折射率范围为1.3～1.5；或者，第一折射层3和第二折射层4的折射率范围均为1.3～1.5。
在一些实施例中，第一折射层3和第二折射层4的透过率均大于或者等于90％。
在一些实施例中，显示面板还包括保护层6，位于彩膜层5的背离显示基板1的一侧，保护层6在基底10上的正投影覆盖彩膜层5在基底10上的正投影；保护层6与第一折射层3或者第二折射层4采用相同材料。
在一些实施例中，保护层6、第一折射层3和第二折射层4均采用有机树脂材料，如聚酰亚胺、聚氨酯等材料。
在一些实施例中，显示基板1还包括像素电路13和封装层14，像素电路13设置于像素界定层11和基底10之间，封装层14位于发光元件12和像素界定层11的背离基底10的一侧，封装层14对发光元件12进行封装。封装层14包括依次叠置的无机封装层和有机封装层，且封装层14的背离基底10的一侧表面为平面，黑矩阵2、第一折射层3、第二折射层4和彩膜层5依次设置于封装层14的该平面上方。发光元件12包括阳极121、发光功能层122和阴极123，阳极121、发光功能层122和阴极123依次远离基底10叠置，阳极 121、发光功能层122和阴极123的位于像素界定层11的开口110中的正投影交叠区域为发光元件12的有效发光区。
基于显示面板的上述结构，当第二折射层的折射率大于第一折射层的折射率时，制备显示面板包括在显示基板一侧依次制备黑矩阵、第一折射层、第二折射层和彩膜层，黑矩阵、第一折射层、第二折射层和彩膜层分别通过涂敷成膜、曝光、显影的工艺制备。
基于显示面板的上述结构，当第二折射层的折射率等于第一折射层的折射率时，制备显示面板包括在显示基板一侧先制备黑矩阵，然后通过半色调曝光工艺制备第一折射层和第二折射层，最后制备彩膜层；黑矩阵和彩膜层分别通过涂敷成膜、曝光、显影的工艺制备；第一折射层和第二折射层通过涂敷成膜、半色调曝光和显影的工艺同时制备。半色调曝光工艺相对于第一折射层和第二折射层分别制备的工艺能减少一道掩膜工艺。
本实施例所提供的显示面板，通过对折射率高于第一折射层的第二折射层进行图形化设置，且第二折射层的图形与发光元件和彩膜层交叠，相比于相关技术中的方案，一方面，能实现第一折射层与第二折射层和彩膜层之间接触界面的折射率差异，使照射到接触界面的光向开口对应区域内折射，从而提升发光元件的出光效率；另一方面，彩膜层的厚度保持不变，大部分外界环境光都能被彩膜层吸收，从而使显示面板的反射率不会恶化；再一方面，由于黑矩阵相对于显示基板的位置未发生变化，从而本实施例中显示面板的L decay(即0°出射角的出射光和其他出射角的出射光的光强差异)效果也较优；进而在提升显示面板效率的同时还能将显示面板的L decay效果和反射率效果调整到较优状态。
本公开实施例还提供一种显示装置，包括上述实施例中的显示面板。
通过采用上述实施例中的显示面板，在提升显示装置效率的同时还能将显示装置的L decay效果和反射率效果调整到较优状态。
本公开实施例所提供的显示装置可以为OLED面板、OLED电视、OLED广告牌、显示器、手机、导航仪等任何具有显示功能的产品或部件。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (15)

  1. 一种显示面板，包括显示基板、黑矩阵、第一折射层、第二折射层和彩膜层，
    其中，所述显示基板包括基底、像素界定层和发光元件，所述像素界定层位于所述基底一侧，所述像素界定层中开设有开口，所述发光元件位于所述开口中；
    所述黑矩阵和所述彩膜层依次远离所述显示基板叠置，
    其中，所述第一折射层和所述第二折射层位于所述彩膜层和所述黑矩阵之间；
    沿所述发光元件的任意排布方向，所述第一折射层和所述第二折射层交替分布且相互接触，
    第一折射层、所述黑矩阵和所述像素界定层中的任意两者在所述基底上的正投影交叠；所述彩膜层、所述第二折射层和所述发光元件中的任意两者在所述基底上的正投影交叠；
    所述第二折射层的折射率大于或者等于所述第一折射层的折射率。
  2. 根据权利要求1所述的显示面板，其中，所述第二折射层在所述基底上的正投影覆盖所述发光元件在所述基底上的正投影，
    所述彩膜层包括多个不同颜色的彩膜，所述多个不同颜色的彩膜与多个发光元件一一对应，
    所述多个彩膜中的相应彩膜在所述基底上的正投影覆盖所述第二折射层和所述发光元件在所述基底上的正投影。
  3. 根据权利要求2所述的显示面板，其中，所述第二折射层与所述黑矩阵在所述基底上的正投影不交叠，
    所述第一折射层和所述第二折射层的相邻的侧表面对接形成对接界面，所述对接界面与所述第一折射层的靠近所述显示基板的一侧表面之间成锐角夹 角。
  4. 根据权利要求3所述的显示面板，其中，所述第一折射层在所述基底上的正投影覆盖所述黑矩阵在所述基底上的正投影，
    所述第一折射层在所述基底上的正投影位于所述像素界定层在所述基底上的正投影区域内。
  5. 根据权利要求4所述的显示面板，其中，所述彩膜与位于其对应的所述发光元件周围的所述第一折射层在所述基底上的正投影局部交叠。
  6. 根据权利要求5所述的显示面板，其中，所述彩膜与位于其对应的所述发光元件周围的所述黑矩阵在所述基底上的正投影至少局部交叠，
    所述彩膜与其对应的所述发光元件和其对应的所述发光元件周围的所述黑矩阵以外的区域在所述基底上的正投影不交叠。
  7. 根据权利要求1-6任意一项所述的显示面板，其中，所述第二折射层的折射率大于所述第一折射层的折射率，
    所述第二折射层的远离所述显示基板的一侧表面与所述显示基板之间的距离小于或者等于所述第一折射层的远离所述显示基板的一侧表面与所述显示基板之间的距离。
  8. 根据权利要求1-6任意一项所述的显示面板，其中，所述第二折射层的折射率等于所述第一折射层的折射率，所述彩膜层的折射率大于所述第一折射层的折射率，
    所述第二折射层的远离所述显示基板的一侧表面与所述显示基板之间的距离小于所述第一折射层的远离所述显示基板的一侧表面与所述显示基板之间的距离。
  9. 根据权利要求3所述的显示面板，其中，所述锐角夹角的角度范围为50～70°。
  10. 根据权利要求4所述的显示面板，其中，所述第一折射层和所述像素界定层的相应侧边界之间的距离范围为0～2μm，
    所述像素界定层和所述黑矩阵的相应侧边界之间的距离范围为3～6μm。
  11. 根据权利要求7所述的显示面板，其中，所述黑矩阵的厚度范围为0.8～1.5μm；
    所述第一折射层的远离所述显示基板的一侧表面与所述显示基板之间的距离范围为2～4μm；
    所述第二折射层的厚度范围为1.5～4μm；
    所述彩膜的与所述开口交叠部分的厚度范围为2～4.5μm；
    所述彩膜的与所述第一折射层交叠且与所述黑矩阵不交叠部分的厚度范围为1.5～4μm。
  12. 根据权利要求1所述的显示面板，其中，所述第二折射层的折射率大于1.5，所述第一折射层的折射率范围为1.3～1.5；
    或者，所述第一折射层和所述第二折射层的折射率范围均为1.3～1.5。
  13. 根据权利要求1所述的显示面板，其中，所述第一折射层和所述第二折射层的透过率均大于或者等于90％。
  14. 根据权利要求1所述的显示面板，其中，还包括保护层，位于所述彩膜层的背离所述显示基板的一侧，
    所述保护层在所述基底上的正投影覆盖所述彩膜层在所述基底上的正投 影；
    所述保护层与所述第一折射层或者所述第二折射层采用相同材料。
  15. 一种显示装置，其中，包括权利要求1-14任意一项所述的显示面板。
PCT/CN2024/113266 2024-04-09 2024-08-20 显示面板和显示装置 Pending WO2025213667A1 (zh)

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