WO2025112412A1 - 显示面板及显示装置 - Google Patents

显示面板及显示装置 Download PDF

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Publication number
WO2025112412A1
WO2025112412A1 PCT/CN2024/097197 CN2024097197W WO2025112412A1 WO 2025112412 A1 WO2025112412 A1 WO 2025112412A1 CN 2024097197 W CN2024097197 W CN 2024097197W WO 2025112412 A1 WO2025112412 A1 WO 2025112412A1
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WIPO (PCT)
Prior art keywords
light
display panel
array substrate
emitting unit
light extraction
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Application number
PCT/CN2024/097197
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English (en)
French (fr)
Inventor
杨超群
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Publication of WO2025112412A1 publication Critical patent/WO2025112412A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
    • H10H29/10—Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00
    • H10H29/14—Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00 comprising multiple light-emitting semiconductor components
    • H10H29/142—Two-dimensional arrangements, e.g. asymmetric LED layout
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/855—Optical field-shaping means, e.g. lenses

Definitions

  • the present application provides a display panel and a display device, which can effectively solve the problem of high power consumption caused by increasing the display brightness at a normal viewing angle existing in the M-LED display screen in the related art.
  • FIG1 is a plan view schematically showing a light emitting unit and a dimming unit on an array substrate in a display panel provided in some embodiments of the present application.
  • FIG. 2 is a first schematic cross-sectional view of a portion of a display panel provided in the present application.
  • FIG. 3 a is a schematic diagram showing the intensity of light emitted from a display panel at different viewing angles in the related art provided in this application.
  • FIG. 3 b is a schematic diagram of the intensity of the emitted light at each viewing angle of the display panel provided in FIG. 2 of the present application.
  • FIG. 4 is a second schematic cross-sectional view of a portion of the display panel provided in the present application.
  • FIG. 5 is a third partial cross-sectional schematic diagram of the display panel provided in the present application.
  • FIG. 6 is a fourth partial cross-sectional schematic diagram of the display panel provided in the present application.
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more features.
  • the meaning of “plurality” is two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined.
  • FIG. 1 is a plan view schematically showing a light emitting unit and a dimming unit on an array substrate in a display panel provided in an embodiment of the present application
  • FIG. 2 is a first partial cross-sectional schematic view of a display panel provided in the present application.
  • an embodiment of the present application provides a display panel, the display panel comprising an array substrate 10, a plurality of light-emitting units 20 and a plurality of dimming sections 30, wherein the plurality of light-emitting units 20 are arranged on a first side of the array substrate 10; the plurality of dimming sections 30 are arranged on the first side of the array substrate 10 and are arranged corresponding to the plurality of light-emitting units 20; wherein the dimming section 30 comprises at least one composite light-guiding section 31 sequentially arranged in a direction away from the side wall 21 of the light-emitting unit 20, the composite light-guiding section 31 at least surrounds the periphery of the side wall 21 of the light-emitting unit 20, each composite light-guiding section 31 comprises a first light-guiding section 311 and a second light-guiding section 312 arranged on a side of the first light-guiding section 311 away from the side wall 21 of the light-emitting unit 20, and the refractive
  • each composite light-guiding portion 31 in the dimming portion 30 surrounds the periphery of the side wall 21 of the light-emitting unit 20 in sequence, and each composite light-guiding portion 31 includes a first light-guiding portion 311 with a lower refractive index and a second light-guiding portion 312 with a higher refractive index arranged on a side of the first light-guiding portion 311 away from the side wall 21 of the light-emitting unit 20, therefore, the large-angle output light (such as the viewing angle of [0°, 60°) and the viewing angle of (120°, 180°) in the output light of the light-emitting unit 20 are At least a portion of the outgoing light with a viewing angle of [60°-120°] can be irradiated onto the composite light guide portion 31, and is angularly deflected at the interface between the first
  • FIG3a is a schematic diagram of the intensity of the emitted light at each viewing angle of the display panel in the related art provided by the present application
  • FIG3b is a schematic diagram of the intensity of the emitted light at each viewing angle of the display panel provided by FIG2 of the present application.
  • the maximum intensity of the emitted light at the viewing angle of [0°, 60°) and the viewing angle of (120°, 180°] is above 150 cd, and the maximum intensity of the emitted light at the viewing angle of [60°-120°] is below 150 cd; while under the condition of the same power consumption level (i.e., the driving current of the light-emitting unit 20 is the same), in the display panel provided by the present application, the maximum intensity of the emitted light at the viewing angle of [0°, 60°) and the viewing angle of (120°, 180°] is below 100 cd, and the maximum intensity of the emitted light at the viewing angle of [60°-120°] is above 200 cd.
  • the present application does not limit the specific viewing angles corresponding to the wide-viewing angle output light and the positive-viewing angle output light.
  • the wide-viewing angle output light may be output light with a viewing angle of [0°, 60°) and a viewing angle of (120°, 180°]
  • the positive-viewing angle output light may be output light with a viewing angle of [60°-120°]
  • the wide-viewing angle output light may be output light with a viewing angle of [0°, 45°) and a viewing angle of (135°, 180°]
  • the positive-viewing angle output light may be output light with a viewing angle of [45°-135°].
  • the type of the light emitting unit 20 is a Micro LED light emitting unit 20 or a Mini LED light emitting unit 20 .
  • the light emitting unit 20 is an LED chip, and the LED chip includes a semiconductor wafer.
  • the light emitting unit 20 is a semiconductor chip.
  • the refractive index of the light emitting unit 20 is greater than the refractive index of the first light guiding portion 311 .
  • the dimming unit 30 includes one or more composite light guide units 31.
  • the material of the first light guide unit 311 may include an inorganic material, such as silicon oxide, and the material of the first light guide unit 311 may also include an organic material, such as a low-refractive-index acrylic resin;
  • the material of the second light guide unit 312 may include an inorganic material, such as titanium dioxide, silicon nitride, etc., and the material of the second light guide unit 312 may also include an organic material, such as a high-refractive-index acrylic resin, or a composite material formed by doping a low-refractive-index acrylic resin with high-refractive-index particles.
  • the dimming unit 30 includes only one composite light guide unit 31, wherein the second light guide unit 312 may be a metal with a light reflective function.
  • the first light guide unit 311 may be omitted or retained.
  • the second light guide portion 312 can be set to a metal with a reflective function, and the reflective function of the reflective metal can be used to reflect the wide-angle output light of the light-emitting unit 20 to achieve the purpose of increasing the positive-angle output light of the light-emitting unit 20, the embodiment of the present application can utilize the difference in refractive index between the first light guide portion 311 and the second light guide portion 312 to achieve the purpose of increasing the positive-angle output light of the light-emitting unit 20.
  • the reason is that the light-emitting unit 20 in the M-LED display panel is small in size, and the spacing distance between two adjacent light-emitting units 20 is small, and the metal etching process is difficult to apply to this application environment.
  • the composite light guide part 31 composed of the first light guide part 311 with a lower refractive index and the second light guide part 312 with a higher refractive index can adjust the deflection effect of the wide-angle output light of the light-emitting unit 20 by adjusting the refractive index difference between the first light guide part 311 and the second light guide part 312.
  • the control method is simpler and more efficient, and can be designed for light-emitting units 20 with different light types, with higher design freedom.
  • a distance between one end of a side wall 21 of the light-emitting unit 20 away from the array substrate 10 and the array substrate 10 is a first distance H1
  • a distance between one end of the first light-guiding portion 311 away from the array substrate 10 and the array substrate 10 is a second distance H2
  • a distance between one end of the second light-guiding portion 312 away from the array substrate 10 and the array substrate 10 is a third distance H3, wherein both the second distance H2 and the third distance H3 are greater than the first distance H1.
  • the light guiding range of the composite light guiding portion 31 can be improved, and the composite light guiding portion 31 can convert more wide-angle output light of the output light of the light emitting unit 20 into positive-angle output light, thereby further improving the display brightness of the display panel at a positive viewing angle.
  • the display panel also includes a packaging glue layer 40, which is arranged on the first side of the array substrate 10 and covers a plurality of light-emitting units 20 and a plurality of dimming parts 30, wherein the packaging glue includes a substrate 41, and a refractive index of the substrate 41 is greater than a refractive index of the first light guide part 311.
  • the refractive index of the substrate 41 of the encapsulation glue layer 40 is greater than the refractive index of the first light guide portion 311 , the Fresnel loss of the light emitted from the light emitting unit 20 or the light efficiency loss caused by total reflection can be reduced.
  • the reduced light efficiency loss includes the light efficiency loss caused by the light emitted from the light emitting unit 20 at the interface between the substrate 41 and the first light guide portion 311 due to the difference in refractive index between the substrate 41 of the encapsulation glue layer 40 and the first light guide portion 311 .
  • the reduced light efficiency loss also includes the light efficiency loss caused by the light emitted from the light emitting unit 20 at the interface between the substrate 41 and the light emitting unit 20 due to the difference in refractive index between the substrate 41 of the encapsulation layer 40 and the light emitting unit 20 .
  • the refractive index of the light-emitting unit 20 is greater than the refractive index of the first light-guiding portion 311, when the refractive index of the substrate 41 is greater than the refractive index of the first light-guiding portion 311, the refractive index difference between the encapsulation layer 40 and the light-emitting unit 20 can be reduced, thereby reducing the light efficiency loss of the output light of the light-emitting unit 20 at the interface between the substrate 41 and the light-emitting unit 20 caused by the refractive index difference between the substrate 41 of the encapsulation layer 40 and the light-emitting unit 20.
  • the material of the substrate 41 may include a high-refractive acrylic resin.
  • the material of the substrate 41 is the same as the material of the second light guide portion 312, and the refractive index is the same, and the refractive index of the substrate 41 is greater than 1.6, so as to reduce the material cost and increase the light output of the light emitting unit 20 at a normal viewing angle.
  • the refractive index of the substrate 41 can also be greater than 1.6, so as to further reduce the refractive index difference between the substrate 41 and the light emitting unit 20, thereby reducing the light efficiency loss of the light emitting unit 20 at the interface between the substrate 41 and the light emitting unit 20 caused by the refractive index difference between the substrate 41 and the light emitting unit 20 of the encapsulation glue layer 40.
  • the plurality of diffusion particles 42 doped in the substrate 41 can diffuse the emitted light of the light-emitting unit 20, increase the extraction efficiency of the light emitted from the light-emitting unit 20 at a normal viewing angle, and improve the display brightness of the display panel at a normal viewing angle.
  • the orthographic projection of the light emitting unit 20 on the array substrate 10 covers the orthographic projection of the diffusion particle 42 on the array substrate 10 .
  • the orthographic projection of the light-emitting unit 20 on the array substrate 10 covers the orthographic projection of the diffusion particles 42 on the array substrate 10, it is possible to reduce the usage of the diffusion particles 42 and reduce the material cost while taking into account the role of the packaging glue in increasing the extraction efficiency of the orthographic output light of the light-emitting unit 20.
  • the display panel also includes a light extraction layer 50, which is arranged on the side of the encapsulation layer 40 away from the array substrate 10, wherein the light extraction layer 50 includes a first light extraction layer 51 and a second light extraction layer 52, the refractive index of the first light extraction layer 51 is greater than the refractive index of the second light extraction layer 52, wherein the second light extraction layer 52 is arranged on the side of the first light extraction layer 51 away from the encapsulation layer 40, the first light extraction layer 51 includes a plurality of lenses 511 arranged in an array, and the second light extraction layer 52 covers the plurality of lenses 511; wherein each light-emitting unit 20 is correspondingly provided with a plurality of lenses 511 on the side away from the encapsulation layer 40.
  • the first light extraction layer 51 since the refractive index of the first light extraction layer 51 is greater than the refractive index of the second light extraction layer 52, the first light extraction layer 51 includes a plurality of lenses 511 arranged in an array, the second light extraction layer 52 covers the plurality of lenses 511, and a plurality of lenses 511 are correspondingly arranged on the side of each light emitting unit 20 away from the encapsulation layer 40.
  • At least part of the wide-angle output light of each light emitting unit 20 can also be angularly deflected by the plurality of lenses 511 arranged on the side of the light emitting unit 20 away from the encapsulation layer 40, so as to further increase the extraction efficiency of the positive-angle output light of the light emitting unit 20.
  • the number of lenses 511 correspondingly arranged on the side of the light-emitting unit 20 away from the packaging glue layer 40 is 10-20.
  • the first light extraction layer 51 includes a plurality of ribs arranged in sequence and at intervals, each rib covering a plurality of light emitting units 20, and the second light extraction layer 52 covers a plurality of ribs.
  • the cross-section of the light-emitting unit 20 in a direction perpendicular to the array substrate 10, is a trapezoid, the cross-section of the surface of the light-emitting unit 20 close to the array substrate 10 is the lower base of the trapezoid, and the cross-section of the surface of the light-emitting unit 20 away from the array substrate 10 is the upper base of the trapezoid.
  • the cross-section of the surface of the light-emitting unit 20 close to the array substrate 10 is the lower base of the trapezoid
  • the cross-section of the surface of the light-emitting unit 20 away from the array substrate 10 is the upper base of the trapezoid
  • the length of the upper base of the trapezoid is smaller than the lower base of the trapezoid.
  • the width of the trapezoid gradually decreases in the direction away from the array substrate 10, and the cross-section of the light-emitting unit 20 is an "inverted trapezoid" with a narrow lower part and an upper frame.
  • the "inverted trapezoid" structure can increase the light-emitting area of the light-emitting unit 20 and make the light output more uniform, thereby improving the display effect of the display panel; on the other hand, it can also enable the composite light-guiding portion 31 surrounding the outer periphery of the side wall 21 of the light-emitting unit 20 to have a better angle conversion effect at the interface between the first light-guiding portion 311 and the second light-guiding portion 312, so that more wide-angle output light in the output light of the light-emitting unit 20 is converted into positive-angle output light, thereby further improving the display brightness of the display panel at a positive viewing angle.
  • the light-emitting unit 20 manufactured on a carrier substrate can be transferred to one side of the array substrate 10 through a transfer process, that is, the cross-section of the light-emitting unit 20 arranged on the carrier substrate is a "right trapezoid" that is narrow at the top and wide at the bottom.
  • the light-emitting unit 20 is flipped and arranged on one side of the array substrate 10, thereby forming an "inverted trapezoid" structure that is narrow at the bottom and framed at the top.
  • the shape of the orthographic projection of the light emitting unit 20 on the array substrate 10 is a rectangle, and accordingly, the first light guide portion 311 in the composite light guide portion 31 is a rectangular ring surrounding the periphery of the side wall 21 of the light emitting unit 20, and the second light guide portion 312 in the composite light guide portion 31 is a rectangular ring surrounding the periphery of the first light guide portion 311.
  • the present application does not limit the shape of the orthographic projection of the light emitting unit 20 on the array substrate 10.
  • the shape of the orthographic projection of the light emitting unit 20 on the array substrate 10 may also be a circle or other polygons other than a rectangle, and accordingly, the first light guide portion 311 in the composite light guide portion 31 is a circular ring or other polygonal ring surrounding the periphery of the side wall 21 of the light emitting unit 20, and the second light guide portion 312 in the composite light guide portion 31 is a circular ring or other polygonal ring surrounding the periphery of the first light guide portion 311.
  • the display panel also includes a polarizer and/or a cover plate arranged on the side of the light extraction layer 50 away from the encapsulation glue layer 40.
  • the polarizer can reduce the reflectivity of ambient light on the light output side of the display panel.
  • the cover plate is used to protect the display panel, and the cover plate may include at least one of a hardening coating and an anti-reflective coating.
  • Fig. 4 is a second cross-sectional schematic diagram of a part of the display panel provided by the present application.
  • the structure in Fig. 2 is the same as or similar to the structure in Fig. 4.
  • the structure of the dimming unit 30, the encapsulation glue layer 40 and the light extraction layer 50 in Fig. 4 is the same as the structure of the dimming unit 30, the encapsulation glue layer 40 and the light extraction layer 50 in Fig. 2 of the present application.
  • the same parts are not described in detail in Fig. 4 of the present application.
  • the display panel also includes a plurality of connecting parts 60, each connecting part 60 connects any two adjacent dimming parts 30, wherein the connecting part 60 includes at least one composite connecting part 61 arranged in sequence in a direction away from the array substrate 10, and the composite connecting part 61 corresponds one-to-one with the composite light guiding part 31, each composite connecting part 61 includes a first connecting part 611 and a second connecting part 612 arranged on a side of the first connecting part 611 away from the array substrate 10, the first connecting part 611 is integrally formed with the first light guiding part 311, and the second connecting part 612 is integrally formed with the second light guiding part 312.
  • each composite connecting part 61 in the connecting part 60 corresponds one-to-one with the composite light guiding part 31, and each composite connecting part 61 includes a first connecting part 611 integrally formed with the first light guiding part 311 and a second connecting part 612 integrally formed with the second light guiding part 312 and arranged on a side of the first connecting part 611 away from the array substrate 10.
  • the second connecting portion 612 and the second light guide portion 312 are integrally formed and have the same film forming process, when the angle between the second connecting portion 612 and the second light guide portion 312 is too large or too small, it will directly affect the film forming quality of the film layer where the second connecting portion 612 and the second light guide portion 312 are located.
  • the present application makes the angle between the second connecting portion 612 and the second light guide portion 312 30°-80°, thereby improving the film forming quality of the film layer where the second connecting portion 612 and the second light guide portion 312 are located, and reducing the probability of fracture problems occurring at the junction of the second connecting portion 612 and the second light guide portion 312, while ensuring that the composite light guide portion 31 where the second light guide portion 312 is located improves the display brightness of the display panel at a normal viewing angle.
  • a plurality of light emitting units 20 are formed on the first side of the array substrate 10 , and the light emitting units 20 are electrically connected to the driving circuit in the array substrate 10 , for example, by a bonding process.
  • At least one first light guide layer and at least one second light guide layer are sequentially deposited on the first side of the array substrate 10 , and the first light guide layers and the second light guide layers are alternately arranged, and the refractive index of the first light guide layer is smaller than the refractive index of the second light guide layer.
  • a photoresist is formed on a side of at least one first light guide layer and at least one second light guide layer in a gap region between two adjacent light emitting units 20 that are away from the array substrate 10, and the at least one first light guide layer and the at least one second light guide layer are patterned using the photoresist to remove the first light guide layer and the second light guide layer covering the light emitting unit 20, and the photoresist is peeled off, thereby at least one composite light guide portion 31 is sequentially arranged in a direction away from the side wall 21 of the light emitting unit 20, and the composite light guide portion 31 surrounds the periphery of the side wall 21 of the light emitting unit 20, and each composite light guide portion 31 includes a first light guide portion 311 and a second light guide portion 312 arranged on a side of the first light guide portion 311 away from the side wall 21 of the light emitting unit 20, and the refractive index of the first light guide portion 311 is less than the refractive index of the second light guide portion 312.
  • the method for preparing a display panel also includes the following steps: forming a packaging glue layer 40 on the first side of the array substrate 10, the packaging glue layer 40 covers a plurality of light-emitting units 20 and a plurality of dimming parts 30, wherein the packaging glue includes a substrate 41, and a refractive index of the substrate 41 is greater than a refractive index of the first light guide part 311.
  • the encapsulation glue layer 40 further includes a plurality of diffusion particles 42 .
  • the diffusion particles 42 are doped into the substrate 41 , and the orthographic projection of the light emitting unit 20 on the array substrate 10 covers the orthographic projection of the diffusion particles 42 on the array substrate 10 .
  • the method for preparing the display panel also includes: forming a light extraction layer 50 on the side of the encapsulation glue layer 40 facing away from the array substrate 10, the light extraction layer 50 includes a first light extraction layer 51 and a second light extraction layer 52, and the refractive index of the first light extraction layer 51 is greater than the refractive index of the second light extraction layer 52.
  • Fig. 5 is a third partial cross-sectional schematic diagram of the display panel provided by the present application. It should be noted that the structure of Fig. 5 is the same or similar to that of Fig. 4, and the same parts of the structure in Fig. 5 will not be described in detail.
  • the display panel also includes a light extraction layer 50, which is arranged on the side of the packaging glue layer 40 away from the array substrate 10, wherein the light extraction layer 50 includes a first light extraction layer 51 and a second light extraction layer 52 arranged on the side of the first light extraction layer 51 away from the packaging glue layer 40, the refractive index of the first light extraction layer 51 is greater than the refractive index of the second light extraction layer 52, the first light extraction layer 51 includes a plurality of lenses 511 arranged in an array, and the second light extraction layer 52 covers the plurality of lenses 511; wherein, a lens 511 is correspondingly arranged on the side of each light-emitting unit 20 away from the packaging glue layer 40, and the orthographic projection of the lens 511 on the array substrate 10 covers the orthographic projection of the light-emitting unit 20 on the array substrate 10.
  • the light extraction layer 50 includes a first light extraction layer 51 and a second light extraction layer 52 arranged on the side of the first light extraction layer 51 away from the packaging glue layer 40, the refractive
  • the first light extraction layer 51 since the refractive index of the first light extraction layer 51 is greater than the refractive index of the second light extraction layer 52, the first light extraction layer 51 includes a plurality of lenses 511 arranged in an array, the second light extraction layer 52 covers the plurality of lenses 511, and a lens 511 is correspondingly arranged on the side of each light-emitting unit 20 away from the encapsulation layer 40, and the orthographic projection of the lens 511 on the array substrate 10 covers the orthographic projection of the light-emitting unit 20 on the array substrate 10.
  • At least part of the wide-angle output light of each light-emitting unit 20 can also be angularly deflected by the lens 511 arranged on the side of the light-emitting unit 20 away from the encapsulation layer 40, so as to further increase the extraction efficiency of the orthographic output light of the light-emitting unit 20, reduce the number of lenses 511, and reduce the process difficulty and production cost.
  • the thickness of the lens 511 provided in FIG. 4 is thicker than that of the lens 511 in FIG. 2 . Therefore, correspondingly, the thickness of the encapsulation glue layer 40 in the display panel in FIG. 4 is thicker than that of the encapsulation glue layer 40 in FIG. 2 .
  • the shape of the lens 511 in a cross section perpendicular to the array substrate 10 is hemispherical, and the edge of the lens 511 protrudes from the edge of the light emitting unit 20 by 1-2 micrometers.
  • Fig. 6 is a fourth cross-sectional schematic diagram of a part of the display panel provided by the present application. It should be noted that the structure in Fig. 6 is the same or similar to the structure in Fig. 5, and the same parts of the structure in Fig. 6 will not be described in detail.
  • the display panel also includes a light extraction layer 50, which is arranged on the side of the packaging glue layer 40 away from the array substrate 10, wherein the light extraction layer 50 includes a first light extraction layer 51 and a second light extraction layer 52, the refractive index of the first light extraction layer 51 is greater than the refractive index of the second light extraction layer 52, the first light extraction layer 51 is arranged on the side of the second light extraction layer 52 away from the packaging glue layer, the second light extraction layer 52 includes a plurality of light extraction openings 521 arranged in an array, the plurality of light extraction openings 521 are arranged one by one with the plurality of light-emitting units 20, and the first light extraction layer 51 fills the light extraction openings 521.
  • the light extraction layer 50 arranged on the side of the packaging glue layer 40 away from the array substrate 10 includes a first light extraction layer 51 and a second light extraction layer 52
  • the refractive index of the first light extraction layer 51 is greater than the refractive index of the second light extraction layer 52
  • the second light extraction layer 52 includes a plurality of light extraction openings 521 arranged in an array
  • the plurality of light extraction openings 521 are arranged one-to-one corresponding to the plurality of light-emitting units 20, and the first light extraction layer 51 fills the light extraction openings 521.
  • At least part of the wide-angle output light of each light-emitting unit 20 can also be angularly deflected by the first light extraction layer 51 arranged in the light extraction opening 521, so as to further increase the extraction efficiency of the positive-angle output light of the light-emitting unit 20.
  • the light extraction layer 50 does not include the lens 511, the preparation process is simpler and the production cost is lower.
  • the thickness of the second light extraction layer 52 is above 2 microns, and the angle between the side wall 21 of the light extraction opening 521 and the orthographic projection of the side wall 21 of the light extraction opening 521 on the array substrate 10 is in the range of 30°-70°.
  • An embodiment of the present application further provides a display device, which includes a housing and the above-mentioned display panel.
  • the housing has an accommodating space, and the display panel is disposed in the accommodating space.

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Abstract

本申请提供一种显示面板及显示装置，显示面板包括阵列基板、多个发光单元和多个调光部，多个发光单元和多个调光部均设置在阵列基板的第一侧；其中，调光部包括至少一个复合导光部，复合导光部环绕于发光单元的侧壁的外围，每个复合导光部包括第一导光部和设置在第一导光部背离发光单元的侧壁的一侧的第二导光部，且第一导光部的折射率小于第二导光部的折射率。

Description

显示面板及显示装置
本申请要求于2023年11月28日提交的申请号为202311618493.0的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，具体涉及一种显示面板及显示装置。
 背景技术
迷你型发光二极管（Mini Light-Emitting Diode，Mini LED）和微型发光二极管（Micro Light-Emitting Diode，Micro LED）统称为M-LED，M-LED显示技术在近两年进入加速发展阶段，逐渐应用于中小型并具有高附加价值的显示领域，相较于有机发光二极管（Organic Light-Emitting Diode，OLED）显示屏，M-LED显示屏在成本、对比度、亮度以及外形上表现出更佳优势。
但是，相关技术中的M-LED显示屏中的M-LED单元在大视角（如视角为大于或等于0°且小于60°）和大视角为（大于120°且小于或等于180°）下的发光强度较大，在正视角（如视角为大于或等于60°且小于或等于120°）下的发光强度较小。当用户对M-LED显示屏的正视角下的显示亮度有更高要求时，只能通过增加驱动电流的方式，来增加M-LED显示屏的正视角下的显示亮度，这势必会增加M-LED显示屏的功耗，因此，亟需提供一种在正视角下的显示亮度更高，且具有更低功耗的M-LED显示屏。
 发明内容
本申请提供一种显示面板及显示装置，能够有效解决相关技术中的M-LED显示屏存在的为提高正视角下的显示亮度而导致的功耗较高的问题。
第一方面，本申请提供一种显示面板，所述显示面板包括：阵列基板；多个发光单元，设置在所述阵列基板的第一侧；多个调光部，设置在所述阵列基板的第一侧，并与多个所述发光单元一一对应设置；其中，所述调光部包括在远离所述发光单元的侧壁的方向上依次设置的至少一个复合导光部，所述复合导光部至少环绕设置于所述发光单元的侧壁的外围，每个所述复合导光部包括第一导光部和设置在所述第一导光部远离所述发光单元的侧壁的一侧的第二导光部，且所述第一导光部的折射率小于所述第二导光部的折射率。
第二方面，本申请还提出了一种显示装置，所述显示装置包括壳体和上述显示面板，所述壳体具有一容置空间，所述显示面板设置在所述容置空间内。
 附图说明
图1为本申请一些实施例提供的显示面板中阵列基板上的发光单元和调光部的平面示意图。
图2为本申请提供的显示面板的局部的第一种剖面示意图。
图3a为本申请提供的相关技术中的显示面板的各视角出射光的强度示意图。
图3b为本申请图2提供的显示面板的各视角出射光的强度示意图。
图4为本申请提供的显示面板的局部的第二种剖面示意图。
图5为本申请提供的显示面板的局部的第三种剖面示意图。
图6为本申请提供的显示面板的局部的第四种剖面示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。此外，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。
在本申请的描述中，需要理解的是，术语“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个特征。在本申请的描述中，“多个”的含义是两个或两个以上，至少一个指可以为一个、两个或者两个以上，除非另有明确具体的限定。
图1为本申请实施例提供的显示面板中阵列基板上的发光单元和调光部的平面示意图；图2为本申请提供的显示面板的局部的第一种剖面示意图。
参照图1和图2所示，第一方面，本申请实施例提供一种显示面板，显示面板包括阵列基板10、多个发光单元20和多个调光部30，多个发光单元20设置在阵列基板10的第一侧；多个调光部30设置在阵列基板10的第一侧，并与多个发光单元20对应设置；其中，调光部30包括在远离发光单元20的侧壁21的方向上依次设置的至少一个复合导光部31，复合导光部31至少环绕设置于发光单元20的侧壁21的外围，每个复合导光部31包括第一导光部311和设置在第一导光部311背离发光单元20的侧壁21的一侧的第二导光部312，且第一导光部311的折射率小于第二导光部312的折射率。
本申请提供的显示面板中，由于显示面板包括与发光单元20一一对应设置的调光部30，调光部30中的各复合导光部31依次环绕于发光单元20的侧壁21的外围，且每个复合导光部31包括具有较低折射率的第一导光部311和设置在第一导光部311远离发光单元20的侧壁21的一侧的具有较高折射率的第二导光部312，因此，发光单元20的出射光中的大视角出射光（如视角为[0°，60°）和视角为（120°，180°]的出射光）中的至少部分，能够被照射到复合导光部31上，并在第一导光部311和第二导光部312的交界界面发生角度偏转，转换为正视角出射光（如视角为[60°-120°]的出射光），增加了正视角出射光的出光量，从而无需增加发光单元20的驱动电流，实现在较低的功耗的条件下，大幅提高显示面板在正视角下的显示亮度，解决相关技术中的M-LED显示屏存在的为提高正视角下的显示亮度而导致的功耗较高的问题。
图3a为本申请提供的相关技术中的显示面板的各视角出射光的强度示意图；图3b为本申请图2提供的显示面板的各视角出射光的强度示意图。参照图3a和图3b所示，相关技术中的显示面板中，视角为[0°，60°）和视角为（120°，180°]的出射光的最大强度在150cd以上，视角为[60°-120°]的出射光的最大强度在150cd以下；而在相同的功耗水平（即发光单元20的驱动电流相同）的条件下，本申请提供的显示面板中，视角为[0°，60°）和视角为（120°，180°]的出射光的最大强度在100cd以下，视角为[60°-120°]的出射光的最大强度在200cd以上。
需要说明的是，本申请对大视角出射光和正视角出射光所对应的具体视角不作限制，例如，在本申请的一些实施例中，大视角出射光可以为视角为[0°，60°）和视角为（120°，180°]的出射光，正视角出射光可以为视角为[60°-120°]的出射光；在本申请的另一些实施例中，大视角出射光可以为视角为[0°，45°）和视角为（135°，180°]的出射光，正视角出射光可以为视角为[45°-135°]的出射光。
在本申请的一些实施例中，发光单元20的类型为Micro LED发光单元20或Mini LED发光单元20。
在本申请的一些实施例中，发光单元20为LED芯片，LED芯片包括半导体晶片。
在本实施例中，发光单元20为半导体晶片。
在本实施例中，发光单元20的折射率大于第一导光部311的折射率。
在本申请的一些实施例中，调光部30包括一个或多个复合导光部31。其中，第一导光部311的材料可以包括无机材料，如氧化硅，第一导光部311的材料也可以包括有机材料，如低折射率丙烯酸树脂；第二导光部312的材料可以包括无机材料，如二氧化钛、氮化硅等，第二导光部312的材料也可以包括有机材料，如高折射率丙烯酸树脂，或低折射率丙烯酸树脂与高折射率粒子掺杂形成的复合材料。
在本申请的一些实施例中，调光部30仅包括一个复合导光部31，其中，第二导光部312可以为具有反光功能的金属。当第二导光部312为具有反光功能的金属时，第一导光部311可以省去或保留。
需要说明的是，虽然可以将第二导光部312设置成具有反光功能的金属，并利用反光金属的反光功能，来对发光单元20的大视角出射光进行反射，以达到增加发光单元20的正视角出射光的目的，但本申请实施例可利用第一导光部311和第二导光部312的折射率差异，来达到增加发光单元20的正视角出射光的目的。原因在于，M-LED显示面板中的发光单元20的尺寸小，相邻两个发光单元20之间的间隔距离小，金属蚀刻工艺较难适用于此种应用环境，利用非金属材料形成具有不同折射率的第一导光部311和第二导光部312，能够降低工艺难度，保证复合导光部31的导光效果，并且，具有较低折射率的第一导光部311和具有较高折射率的第二导光部312所组成的复合导光部31，能够通过调整第一导光部311和第二导光部312之间的折射率差来调整对发光单元20的大视角出射光的偏转效果，控制方式更为简单高效，且能够针对不同光型的发光单元20进行设计，设计自由度更高。
在本申请的一些实施例中，请参阅图2，发光单元20的侧壁21远离阵列基板10的一端与阵列基板10之间的距离为第一距离H1，第一导光部311远离阵列基板10的一端与阵列基板10之间的距离为第二距离H2，第二导光部312远离阵列基板10的一端与阵列基板10之间的距离为第三距离H3，其中，第二距离H2和第三距离H3均大于第一距离H1。
需要说明的是，图4至图6中关于第一距离H1、第二距离H2、第三距离H3虽未进行标示，但图4至图6中的三个距离的关系均与图2中的相同。
本申请提供的显示面板中，由于第一导光部311远离阵列基板10的一端与阵列基板10之间的距离大于发光单元20的侧壁21远离阵列基板10的一端与阵列基板10之间的距离，且第二导光部312远离阵列基板10的一端与阵列基板10之间的距离大于发光单元20的侧壁21远离阵列基板10的一端与阵列基板10之间的距离，因此，能够提高复合导光部31的导光范围，可以使复合导光部31能够将发光单元20的出射光中的更多的大视角出射光转换为正视角出射光，从而进一步提高显示面板在正视角下的显示亮度。
在本申请的一些实施例中，显示面板还包括封装胶层40，封装胶层40设置在阵列基板10的第一侧，并覆盖多个发光单元20和多个调光部30，其中，封装胶包括基材41，基材41的折射率大于第一导光部311的折射率。
本申请提供的显示面板中，由于封装胶层40的基材41的折射率大于第一导光部311的折射率，因此，能够减少发光单元20的出射光的菲尼尔损耗或全反射带来的光效损失。
在本实施例中，减少的光效损失包括由于封装胶层40的基材41和第一导光部311的折射率差异所导致的发光单元20的出射光在基材41和第一导光部311的交界界面产生的光效损失。
在本实施例中，减少的光效损失还包括由于封装胶层40的基材41和发光单元20的折射率差异所导致的发光单元20的出射光在基材41和发光单元20的交界界面产生的光效损失。
由于发光单元20的折射率大于第一导光部311的折射率，当基材41的折射率大于第一导光部311的折射率时，能够缩小封装胶层40和发光单元20之间的折射率差异，进而减少由于封装胶层40的基材41和发光单元20的折射率差异所导致的发光单元20的出射光在基材41和发光单元20的交界界面产生的光效损失。
在本申请的一些实施例中，基材41的材料可以包括高折射丙烯酸树脂。
在本实施例中，基材41的材质与第二导光部312的材质相同，且折射率相同，基材41的折射率大于1.6，以降低物料成本，并提高发光单元20的正视角出射光的出光量。当然，在本申请的其他实施例中，基材41的折射率还可以大于1.6，以进一步减小基材41和发光单元20之间的折射率差异，进而减少由于封装胶层40的基材41和发光单元20的折射率差异所导致的发光单元20的出射光在基材41和发光单元20的交界界面产生的光效损失。
在本申请的一些实施例中，基材41的厚度大于10微米，以提高封装胶的封装效果，并保证发光单元20的正视角出射光的光程，提高显示面板的显示效果。
在本申请的一些实施例中，封装胶层40还包括多个扩散粒子42，扩散粒子42掺杂于基材41中，扩散粒子42包括二氧化钛、二氧化锆、二氧化硅中的至少一种。
本申请提供的显示面板中，掺杂于基材41中的多个扩散粒子42能够对发光单元20的出射光进行扩散，增加发光单元20的正视角出射光的取出效率，提高显示面板在正视角下的显示亮度。
在本申请的一些实施例中，发光单元20在阵列基板10上的正投影覆盖扩散粒子42在阵列基板10上的正投影。
本申请提供的显示面板中，由于发光单元20在阵列基板10上的正投影覆盖扩散粒子42在阵列基板10上的正投影，因此，能够在减少扩散粒子42的用量，降低物料成本的同时，兼顾封装胶所起到的增加发光单元20的正视角出射光的取出效率的作用。
在本申请的一些实施例中，显示面板还包括光取出层50，光取出层50设置在封装胶层40背离阵列基板10的一侧，其中，光取出层50包括第一光取出层51和第二光取出层52，第一光取出层51的折射率大于第二光取出层52的折射率，其中，第二光取出层52设置在第一光取出层51背离封装胶层40的一侧，第一光取出层51包括阵列设置的多个透镜511，第二光取出层52覆盖多个透镜511；其中，每个发光单元20背离封装胶层40的一侧对应设置有多个透镜511。
本申请提供的显示面板中，由于第一光取出层51的折射率大于第二光取出层52的折射率，第一光取出层51包括阵列设置的多个透镜511，第二光取出层52覆盖多个透镜511，且每个发光单元20背离封装胶层40的一侧对应设置有多个透镜511，因此，每个发光单元20的大视角出射光中的至少部分还能够通过设置在发光单元20背离封装胶层40的一侧的多个透镜511进行角度偏转，以进一步增加发光单元20的正视角出射光的取出效率。
在本申请的一些实施例中，对应设置在发光单元20背离封装胶层40的一侧的透镜511的数量为10-20个。
需要说明的是，在本申请的其他实施例中，第一光取出层51包括依次间隔设置的多个棱条，每个棱条覆盖多个发光单元20，第二光取出层52覆盖多个棱条。
在本申请的一些实施例中，在垂直于阵列基板10的方向上，发光单元20的截面的形状为梯形，发光单元20靠近阵列基板10的表面的截面为梯形的下底，发光单元20远离阵列基板10的表面的截面为梯形的上底。
本申请提供的显示面板中，发光单元20靠近阵列基板10的表面的截面为梯形的下底，发光单元20远离阵列基板10的表面的截面为梯形的上底，而梯形的上底的长度小于梯形的下底。
在本申请的实施例中，在背离阵列基板10的方向上，梯形的宽度逐渐减小，发光单元20的截面为下窄上框的“倒梯形”，一方面，“倒梯形”的结构能够使发光单元20的发光区域增大，且出光更为均匀，提高显示面板的显示效果；另一方面，还能够使环绕于发光单元20的侧壁21的外围的复合导光部31，在第一导光部311和第二导光部312的交界界面的角度转换效果更好，使发光单元20的出射光中的更多的大视角出射光转换为正视角出射光，从而进一步提高显示面板在正视角下的显示亮度。
需要说明的是，制作于一承载基板上的发光单元20可以通过转移工艺转移到阵列基板10的一侧，也即，设置在承载基板上的发光单元20的截面为上窄下宽的“正梯形”，在经过转移工艺后，发光单元20被倒装设置在阵列基板10的一侧，从而形成下窄上框的“倒梯形”的结构。
在本申请的一些实施例中，发光单元20在阵列基板10上的正投影的形状为矩形，相应的，复合导光部31中的第一导光部311为环绕于发光单元20的侧壁21的外围的矩形环，复合导光部31中的第二导光部312为环绕于第一导光部311的外围的矩形环。但本申请对发光单元20在阵列基板10上的正投影的形状不作限制，在本申请的其他实施例中，发光单元20在阵列基板10上的正投影的形状还可以为圆形或除矩形以外的其他多边形，相应的，复合导光部31中的第一导光部311为环绕于发光单元20的侧壁21的外围的圆形环或其他多边形环，复合导光部31中的第二导光部312为环绕于第一导光部311的外围的圆形环或其他多边形环。
在本申请的一些实施例中，显示面板还包括设置在光取出层50背离封装胶层40的一侧的偏光片和/或盖板，偏光片能够降低环境光在显示面板的出光侧的反射率，盖板用于对显示面板进行保护，盖板可以包括硬化涂层和抗反射涂层中的至少一种。
图4为本申请提供的显示面板的局部的第二剖面示意图。图2中的结构与图4的结构相同或相类似，例如，图4中的调光部30、封装胶层40和光取出层50的结构与本申请图2中的调光部30、封装胶层40和光取出层50的结构相同，本申请图4对于相同部分不再赘述。
不同之处在于：显示面板还包括多个连通部60，每个连通部60连接任意相邻的两个调光部30，其中，连通部60包括在远离阵列基板10的方向上依次设置的至少一个复合连接部61，且复合连接部61与复合导光部31一一对应，每个复合连接部61包括第一连接部611和设置在第一连接部611远离阵列基板10的一侧的第二连接部612，第一连接部611与第一导光部311一体成型，第二连接部612与第二导光部312一体成型。
本申请提供的显示面板中，由于连通部60连接任意相邻的两个调光部30，连通部60中的复合连接部61与复合导光部31一一对应，每个复合连接部61包括与第一导光部311一体成型的第一连接部611和设置在第一连接部611远离阵列基板10的一侧的与第二导光部312一体成型的第二连接部612，因此，连接任意相邻的两个调光部30的连通部60与调光部30的膜层结构相同，能够通过连通部60将各调光部30连接为一个整体，从而使各调光部30能够利用相同的成膜工艺形成，保证各调光部30的调光效果的同时，降低生产制造成本，并提高各调光部30的稳定性，延长显示面板的寿命。
在本申请的一些实施例中，第二连接部612与第二导光部312之间的夹角为30°-80°。
本申请提供的显示面板中，由于第二连接部612与第二导光部312一体成型，成膜工艺相同，因此，当第二连接部612与第二导光部312之间的夹角过大或过小时，会直接影响第二连接部612与第二导光部312所在膜层的成膜质量。本申请通过使第二连接部612与第二导光部312之间的夹角为30°-80°，能够在保证第二导光部312所在的复合导光部31的提高显示面板在正视角下的显示亮度的前提下，提高第二连接部612与第二导光部312所在膜层的成膜质量，降低第二连接部612与第二导光部312的交界处发生断裂问题的几率。
本申请实施例还提供一种显示面板的制备方法，包括：
提供一阵列基板10，阵列基板10包括多个驱动电路。
在阵列基板10的第一侧形成多个发光单元20，并使发光单元20与阵列基板10中的驱动电路电性连接，例如可以通过键合工艺，将发光单元20与阵列基板10中的驱动电路电性连接。
在阵列基板10的第一侧依次沉积至少一个第一导光层和至少一个第二导光层，且第一导光层和第二导光层交替设置，第一导光层的折射率小于第二导光层的折射率。
在位于相邻的两个发光单元20之间的间隙区域的至少一个第一导光层和至少一个第二导光层背离阵列基板10的一侧形成光阻，利用光阻对至少一个第一导光层和至少一个第二导光层进行图案化，以去除覆盖在发光单元20上的第一导光层和第二导光层，并剥离光阻，从而在远离发光单元20的侧壁21的方向上依次设置的至少一个复合导光部31，复合导光部31环绕于发光单元20的侧壁21的外围，每个复合导光部31包括第一导光部311和设置在第一导光部311远离发光单元20的侧壁21的一侧的第二导光部312，且第一导光部311的折射率小于第二导光部312的折射率。
在本申请的一些实施例中，显示面板的制备方法还包括以下步骤：在阵列基板10的第一侧形成封装胶层40，封装胶层40覆盖多个发光单元20和多个调光部30，其中，封装胶包括基材41，基材41的折射率大于第一导光部311的折射率。
在本实施例中，封装胶层40还包括多个扩散粒子42，扩散粒子42掺杂于基材41中，且发光单元20在阵列基板10上的正投影覆盖扩散粒子42在阵列基板10上的正投影。
在本申请的一些实施例中，显示面板的制备方法还包括：在封装胶层40背离阵列基板10的一侧形成光取出层50，光取出层50包括第一光取出层51和第二光取出层52，第一光取出层51的折射率大于第二光取出层52的折射率。
图5为本申请提供的显示面板的局部的第三种剖面示意图。需要说明的是，图5的结构与图4的结构相同或相类似，图5中的结构对于相同部分不再赘述。
不同之处在于：显示面板还包括光取出层50，光取出层50设置在封装胶层40背离阵列基板10的一侧，其中，光取出层50包括第一光取出层51和设置在第一光取出层51背离封装胶层40的一侧的第二光取出层52，第一光取出层51的折射率大于第二光取出层52的折射率，第一光取出层51包括阵列设置的多个透镜511，第二光取出层52覆盖多个透镜511；其中，每个发光单元20背离封装胶层40的一侧对应设置有一个透镜511，且透镜511在阵列基板10上的正投影覆盖发光单元20在阵列基板10上的正投影。
本申请提供的显示面板中，由于第一光取出层51的折射率大于第二光取出层52的折射率，第一光取出层51包括阵列设置的多个透镜511，第二光取出层52覆盖多个透镜511，且每个发光单元20背离封装胶层40的一侧对应设置有一个透镜511，透镜511在阵列基板10上的正投影覆盖发光单元20在阵列基板10上的正投影，因此，每个发光单元20的大视角出射光中的至少部分还能够通过设置在发光单元20背离封装胶层40的一侧的透镜511进行角度偏转，以进一步增加发光单元20的正视角出射光的取出效率，并减少透镜511的数量，降低工艺难度和生产制造成本。
需要说明的是，在垂直于阵列基板的方向上，图4提供的透镜511的厚度相较于图2中的透镜511而言厚度更厚，因此，对应的，图4中的显示面板中的封装胶层40的厚度相较于图2中的封装胶层40而言厚度更厚。
在本申请的一些实施例中，透镜511在垂直于阵列基板10的截面的形状为半球形，透镜511的边缘凸出于发光单元20的边缘的距离为1-2微米。
图6为本申请提供的显示面板的局部的第四种剖面示意图。需要说明的是，图6中的结构与图5中的结构相同或相似，图6中的结构对于相同部分不再赘述。
不同的是，显示面板还包括光取出层50，光取出层50设置在封装胶层40背离阵列基板10的一侧，其中，光取出层50包括第一光取出层51和第二光取出层52，第一光取出层51的折射率大于第二光取出层52的折射率，第一光取出层51设置在第二光取出层52背离封胶装层的一侧，第二光取出层52包括阵列设置的多个光取出开口521，多个光取出开口521与多个发光单元20一一对应设置，第一光取出层51填充光取出开口521。
本申请提供的显示面板中，由于设置在封装胶层40背离阵列基板10的一侧的光取出层50包括第一光取出层51和第二光取出层52，第一光取出层51的折射率大于第二光取出层52的折射率，第二光取出层52包括阵列设置的多个光取出开口521，多个光取出开口521与多个发光单元20一一对应设置，第一光取出层51填充光取出开口521，因此，每个发光单元20的大视角出射光中的至少部分还能够通过设置在光取出开口521中的第一光取出层51进行角度偏转，以进一步增加发光单元20的正视角出射光的取出效率，并且，由于光取出层50不包括透镜511，因此，制备工艺更为简单，生产制造成本更低。
在本申请的一些实施例中，为了进一步增加发光单元20的正视角出射光的取出效率，第二光取出层52的厚度在2微米以上，且光取出开口521的侧壁21与光取出开口521的侧壁21在阵列基板10上的正投影之间的夹角在30°-70°范围内。
本申请实施例还提供一种显示装置，显示装置包括壳体和上述的显示面板，壳体具有一容置空间，显示面板设置在容置空间内。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的技术方案进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (20)

  1. 一种显示面板，其中，所述显示面板包括：
    阵列基板；
    多个发光单元，设置在所述阵列基板的第一侧；
    多个调光部，设置在所述阵列基板的第一侧，并与多个所述发光单元一一对应设置；
    其中，所述调光部包括在远离所述发光单元的侧壁的方向上依次设置的至少一个复合导光部，所述复合导光部至少环绕设置于所述发光单元的侧壁的外围，每个所述复合导光部包括第一导光部和设置在所述第一导光部远离所述发光单元的侧壁的一侧的第二导光部，且所述第一导光部的折射率小于所述第二导光部的折射率。
  2. 根据权利要求1所述的显示面板，其中，所述发光单元的侧壁远离所述阵列基板的一端与所述阵列基板之间的距离为第一距离，所述第一导光部远离所述阵列基板的一端与所述阵列基板之间的距离为第二距离，所述第二导光部远离所述阵列基板的一端与所述阵列基板之间的距离为第三距离，其中，所述第二距离和所述第三距离均大于所述第一距离。
  3. 根据权利要求1所述的显示面板，其中，所述显示面板还包括封装胶层，所述封装胶层设置在所述阵列基板的第一侧，并覆盖多个所述发光单元和多个所述调光部，其中，所述封装胶包括基材，所述基材的折射率大于所述第一导光部的折射率。
  4. 根据权利要求3所述的显示面板，其中，所述封装胶层还包括多个扩散粒子，所述扩散粒子掺杂于所述基材中，所述扩散粒子包括二氧化钛、二氧化锆、二氧化硅中的至少一种。
  5. 根据权利要求4所述的显示面板，其中，所述发光单元在所述阵列基板上的正投影覆盖所述扩散粒子在所述阵列基板上的正投影。
  6. 根据权利要求3所述的显示面板，其中，所述显示面板还包括光取出层，所述光取出层设置在所述封装胶层背离所述阵列基板的一侧，其中，所述光取出层包括第一光取出层和第二光取出层，所述第一光取出层的折射率大于所述第二光取出层的折射率。
  7. 根据权利要求6所述的显示面板，其中，所述第一光取出层包括依次间隔设置的多个所述棱条，每个所述棱条覆盖多个所述发光单元，所述第二光取出层覆盖多个所述棱条。
  8. 根据权利要求6所述的显示面板，其中，所述发光单元的截面的形状为梯形，所述发光单元靠近所述阵列基板的表面的截面为梯形的下底，所述发光单元远离所述阵列基板的表面的截面为梯形的上底。
  9. 根据权利要求6所述的显示面板，其中，所述第二光取出层设置在所述第一光取出层背离所述封装胶层的一侧，所述第一光取出层包括阵列设置的多个透镜，所述第二光取出层覆盖多个所述透镜；
    其中，每个所述发光单元背离所述封装胶层的一侧对应设置有多个所述透镜。
  10. 根据权利要求6所述的显示面板，其中，所述第二光取出层设置在所述第一光取出层背离所述封装胶层的一侧，所述第一光取出层包括阵列设置的多个透镜，所述第二光取出层覆盖多个所述透镜；
    其中，每个所述发光单元背离所述封装胶层的一侧对应设置有一个所述透镜，且所述透镜在所述阵列基板上的正投影覆盖所述发光单元在所述阵列基板上的正投影。
  11. 根据权利要求10所述的显示面板，其中，所述透镜在垂直于所述阵列基板的截面的形状为半球形。
  12. 根据权利要求10所述的显示面板，其中，所述透镜的边缘凸出于所述发光单元的边缘的距离为1至2微米。
  13. 根据权利要求6所述的显示面板，其中，所述第一光取出层设置在所述第二光取出层背离所述封装胶层的一侧，所述第二光取出层包括阵列设置的多个光取出开口，多个所述光取出开口与多个所述发光单元一一对应设置，所述第一光取出层填充所述光取出开口。
  14. 根据权利要求13所述的显示面板，其中，所述第二光取出层的厚度大于2微米。
  15. 根据权利要求13所述的显示面板，其中，所述光取出开口的侧壁与所述光取出开口的侧壁在所述阵列基板上的正投影之间的夹角范围为30°至70°。
  16. 根据权利要求1所述的显示面板，其中，所述显示面板还包括多个连通部，每个所述连通部连接任意相邻的两个所述调光部，其中，所述连通部包括在远离所述阵列基板的方向上依次设置的至少一个复合连接部，且所述复合连接部与所述复合导光部一一对应，每个所述复合连接部包括第一连接部和设置在所述第一连接部远离所述阵列基板的一侧的第二连接部，所述第一连接部与所述第一导光部一体成型，所述第二连接部与所述第二导光部一体成型。
  17. 根据权利要求16所述的显示面板，其中，所述第二连接部与所述第二导光部之间的夹角范围为30°至80°。
  18. 根据权利要求1至17任一项所述的显示面板，其中，所述发光单元为半导体晶片。
  19. 根据权利要求1至17任一项所述的显示面板，其中，所述发光单元的折射率大于所述第一导光部的折射率。
  20. 一种显示装置，其中，所述显示装置包括壳体和如权利要求1至19任一项所述的显示面板，所述壳体具有一容置空间，所述显示面板设置在所述容置空间内。
PCT/CN2024/097197 2023-11-28 2024-06-04 显示面板及显示装置 Pending WO2025112412A1 (zh)

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