WO2018223726A1 - 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
WO2018223726A1
WO2018223726A1 PCT/CN2018/075855 CN2018075855W WO2018223726A1 WO 2018223726 A1 WO2018223726 A1 WO 2018223726A1 CN 2018075855 W CN2018075855 W CN 2018075855W WO 2018223726 A1 WO2018223726 A1 WO 2018223726A1
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Prior art keywords
display panel
retroreflective
light
layer
region
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PCT/CN2018/075855
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English (en)
French (fr)
Inventor
许军
张青
黄甫升
吴守政
Original Assignee
京东方科技集团股份有限公司
合肥京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/302,991 priority Critical patent/US11366351B2/en
Publication of WO2018223726A1 publication Critical patent/WO2018223726A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133502—Antiglare, refractive index matching layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
    • 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
    • H10K50/858—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
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133357—Planarisation layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G02F1/133519—Overcoatings
    • 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
    • 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

Definitions

  • Embodiments of the present invention relate to a display panel and a display device.
  • Embodiments of the present invention provide a display panel and a display device that can reduce ambient light entering a human eye after being reflected on a surface of the display panel.
  • a display panel including a retroreflective layer disposed on a light exiting side; the retroreflective layer includes a retroreflective region and a transmissive region for causing light incident thereon to be in an incident direction Reflecting in a reverse direction or in a direction opposite to the incident direction; wherein the display panel includes a pixel region and a pixel defining region for defining the pixel region; the pixel region and the transmissive along a thickness direction of the display panel The areas at least partially overlap.
  • the retroreflective region at least partially overlaps the pixel defining region of the display panel along a thickness direction of the display panel.
  • the retroreflective region overlaps a pixel defining region and a partial pixel region of the display panel along a thickness direction of the display panel.
  • the pixel area completely overlaps the transmissive area along the thickness direction of the display panel.
  • the transmissive area of the retroreflective layer is a hollowed out structure.
  • the retroreflective region of the retroreflective layer comprises an organic material layer and a plurality of transparent spherical particles, the spherical particles partially embedded in the organic material layer; the spherical particles are not embedded in the organic material layer A portion is adjacent to an outer side of the display panel; a refractive index of the spherical particles is different from a refractive index of the organic material layer.
  • the spherical particles have a diameter of 1 to 10 ⁇ m.
  • the material of the organic material layer is tantalum pentoxide, and the material of the spherical particles is polymethyl methacrylate or polycarbonate.
  • the height of the spherical particles embedded in the organic material layer is equal to one-half the diameter of the spherical particles.
  • the display panel includes a converging lens disposed on a side of the retroreflective layer away from the surface of the display panel and corresponding to the pixel area; wherein the main optical axis of the converging lens is parallel In a thickness direction of the display panel, and a main optical axis of the converging lens passes through a center of a transmissive area of the retroreflective layer.
  • the transmissive region covers a spot of light formed by the converging lens at the retroreflective layer.
  • the focal length of the converging lens is equal to the distance from the center of the converging lens to the light emitting side surface of the display panel.
  • the display panel includes a color resist pattern, and a light incident side surface of the color resist pattern is convex toward a direction away from the retroreflective layer to form the converging lens.
  • the display panel further includes a flat layer covering a convex surface of the converging lens; the flat layer having a refractive index smaller than a refractive index of the converging lens.
  • the display panel is an organic light emitting diode display panel
  • the convergence lens is disposed between a light emitting layer of the display panel and a side of the retroreflective layer away from the surface of the display panel.
  • the display panel is a liquid crystal display panel
  • the backlight assembly provides backlight for the display panel
  • the convergence lens is disposed on a side of the backlight module and the retroreflective layer away from the surface of the display panel. between.
  • a display device including the display panel described above.
  • the display device further includes a backlight assembly for emitting collimated light or approximately collimated light.
  • FIG. 1(a) is a schematic structural view 1 of a display panel according to an embodiment of the present invention.
  • 1(b) is a second schematic structural view of a display panel according to an embodiment of the present invention.
  • FIG. 2 is a comparison diagram of effects of a display panel provided by an embodiment of the present invention and a display panel provided by the prior art;
  • FIG. 3 is a schematic structural view 3 of a display panel according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural view 4 of a display panel according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram 5 of a display panel according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram 6 of a display panel according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a principle of retroreflection in a retroreflective region according to an embodiment of the present invention.
  • FIG. 8(a) is a schematic structural view 7 of a display panel according to an embodiment of the present invention.
  • FIG. 8(b) is a schematic structural diagram 8 of a display panel according to an embodiment of the present invention.
  • FIG. 8(c) is a schematic structural view nin of a display panel according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram 10 of a display panel according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram 11 of a display panel according to an embodiment of the present invention.
  • Glare can be prevented by using a curved screen design or an anti-glare film (AG Film).
  • the curved screen can only solve the glare problem caused by specular reflection at the center of the curved screen, and specular reflection still occurs in other positions, so that the specular reflection light will enter the human eye; in addition, the anti-glare film can not solve the diffuse reflection and Fresnel reflection brings about the problem of the display effect attenuation; attaching the AG film can solve the glare problem caused by the specular reflection, but it can not prevent the ambient light (by diffuse reflection, etc.) from entering the human eye, and the diffuse reflection light enters. The human eye will reduce the ambient contrast of the display device.
  • the embodiment of the present invention provides a display panel (Panel) 01, as shown in FIG. 1(a) and FIG. 1(b), including a retroreflective layer 20 disposed on a light exiting side; the retroreflective layer 20 includes a retroreflective layer 201 and The transmissive region 202, the retroreflective region 201 is used to reflect the light incident thereon in the opposite direction of the incident direction or in the opposite direction of the incident direction (as shown by a single arrow in FIG.
  • the display panel 01 includes a pixel area 101 and a pixel defining area 102 for defining the pixel area 101; in the thickness direction of the display panel 01, the pixel area 101 and the transmissive area 202 have overlapping areas.
  • the structure of the retroreflective region 201 in the retroreflective layer 20 is not limited, so that the retroreflective region 201 can retroreflect the light incident thereon, that is, the opposite direction of the incident light in the incident direction. Or in the opposite direction of the incident direction.
  • a film layer capable of transmitting light may be provided in order to allow light to pass through, or any film layer may not be provided.
  • the material of the transmissive region 202 should be a material having high transmittance, such as SiO 2 or the like.
  • the retroreflective layer 20 can be formed on the light exiting side by coating.
  • the type of the display panel is not limited, and the display panel may be a liquid crystal display panel or an organic electroluminescent diode display panel.
  • a Back Light Unit (BLU) is required to provide a light source for the display panel 01.
  • the display panel 01 includes an array substrate, a counter substrate, and a substrate between the array substrate and the counter substrate.
  • the liquid crystal layer On the basis of this, when the display panel is a liquid crystal display panel, the pixel area 101 refers to a light-transmitting area, and the pixel defining area 102 refers to a non-light-transmitting area, that is, a black matrix (BM).
  • BM black matrix
  • the organic electroluminescent diode display panel includes an anode, a cathode, and an organic layer.
  • the pixel area 101 of the display panel 01 refers to a light-emitting area
  • the pixel defining area 102 refers to a non-light-emitting area.
  • the retroreflective layer 20 is disposed on the light exiting side, and may be disposed on the light emitting side surface of the base substrate 10 as shown in the drawings of the present specification.
  • the display panel 01 further includes a polarizer
  • the reverse The reflective layer 20 may also be disposed on the light exiting side surface of the polarizer.
  • the display panel 01 of the drawings of the present invention is only illustrative of the retroreflective layer 20, the substrate 10, and other portions related to the present invention, and other portions related to the present invention are not illustrated.
  • the base substrate 10 may be a base substrate of a color filter substrate disposed opposite to the array substrate with a liquid crystal layer interposed therebetween.
  • the base substrate 10 may be a cover plate on the light exit side of the display panel, or if the display panel includes a color film, the base substrate 10 may be a substrate on the light exit side provided with a color film.
  • the substrate of the present disclosure is not limited by the embodiment of the present disclosure.
  • the retroreflective region 201 covers the pixel defining region 102 of the display panel 01; or as shown in FIG. 1(b), The retroreflective region 201 has an overlapping region with a portion of the pixel defining region 102 of the display panel 01.
  • 01 is a display panel provided by an embodiment of the present invention
  • 02 is a display panel provided by the prior art.
  • ambient light is reflected into the display panel.
  • the ambient light is incident on the surface of the display panel 01 provided by the embodiment of the present invention, and is reflected in the opposite direction of the incident direction of the ambient light or in the opposite direction to the incident direction, and thus the ambient light incident on the surface of the display panel. Does not enter the human eye, and thus does not affect the display of the display panel.
  • the human eye is not a light source, and even if it is considered as a secondary light source, since the human eye is incident on the surface of the display panel 01 with very little light, the effect of the partially reflected light on the display is very small and may be disregarded.
  • the embodiment of the present invention provides a display panel 01.
  • the display panel 01 includes a retroreflective layer 20 disposed on a light exiting side, and the retroreflective layer 20 includes a retroreflective layer 201.
  • the retroreflective region 201 can cause a light incident thereon. The opposite direction of the incident direction or the opposite direction of the incident direction is reflected. Therefore, when the ambient light is incident on the retroreflective region 201, it is reflected in the opposite direction of the incident direction of the ambient light or in the opposite direction to the incident direction, so that the incident light is incident on the display panel 01.
  • the ambient light of the reflective area 201 is not reflected into the human eye, so no matter what kind of reflection (specular reflection, diffuse reflection, Fresnel reflection, etc.) of the ambient light on the surface of the display panel 01, as long as the ambient light is incident on the display panel
  • the retroreflective region 201 of 01 is retroreflective, so that the ambient light entering the human eye after reflection on the surface of the display panel 01 can be reduced, so that the visual effect of the display panel 01 when viewed can be improved.
  • the retroreflective region 201 overlaps the pixel defining region 102 of the display panel 01.
  • the retroreflective region 201 overlaps with the pixel defining region 102 of the display panel 01. At this time, the shape and size of the retroreflective region 201 and the pixel defining region 102 are the same.
  • the pixel defining area 102 since the pixel defining area 102 has no light emission, when the retroreflective area 201 overlaps with the pixel defining area 102 of the display panel 01, the normal emission of the light of the display panel 01 is not affected, and thus the display panel is not affected. 01 display effect.
  • the size of the display panel 01 is constant, since the area of the retroreflective region 201 is larger, the less ambient light that enters the surface of the display panel 01 and is reflected on the surface of the display panel 01 and enters the human eye, the more favorable it is to improve.
  • the display effect of the display panel 01 is such that the retroreflective region 201 overlaps with the pixel defining region 102 of the display panel 01 in the embodiment of the present invention, so that the retroreflective region 201 can be added.
  • the area can be reduced to the ambient light that enters the human eye after being reflected on the surface of the display panel 01.
  • the retroreflective region 201 overlaps the pixel defining region 102 and the partial pixel region 101 of the display panel 01, so that when ambient light is incident on the display After the pixel defining area 102 of the panel 01 and the pixel area 101 covered by the retroreflective area 201 are reflected in the opposite direction of the incident light or in the opposite direction to the incident direction, the ambient light entering the human eye is reduced, thereby further improving The display effect of the panel 01 is displayed.
  • light emitted from the pixel region 101 of the display panel 01 can be emitted from the transmissive region 202 of the retroreflective layer 20.
  • the transmissive region 202 of the retroreflective layer 20 is a hollowed out structure.
  • the transmissive region 202 of the retroreflective layer 20 is a hollow structure, that is, the transmissive region 202 of the retroreflective layer 20 is not provided with any structure.
  • the transmissive area 202 of the retroreflective layer 20 is a hollow structure, on the one hand, when the light emitted from the pixel area 101 of the display panel 01 is emitted from the transmissive area 202, the transmissive area 202 does not affect the light penetration of the display panel 01. Light rate; on the other hand, it can reduce production costs.
  • the retroreflective region 201 of the retroreflective layer 20 includes an organic material layer 2011 and a plurality of transparent spherical particles 2012, the spherical particles 2012 are partially embedded in the organic material layer 2011, and the spherical particles 2012 are not embedded.
  • the portion of the organic material layer 2011 is close to the outer side of the display panel 01; wherein the refractive index of the spherical particles 2012 is different from the refractive index of the organic material layer 2011.
  • the specific material of the organic material layer 2011 is not limited, and may be, for example, a resin layer (Resin).
  • the material of the spherical particles 2012 is not limited and may be, for example, glass.
  • the retroreflective region 201 includes the organic material layer 2011 and the plurality of transparent spherical particles 2012
  • the principle of retroreflection of the retroreflective region 201 is specifically as shown in FIG. 7
  • ambient light 1 is taken as an example to illustrate ambient light. 1 is incident on the surface of the spherical particles 2012 from the air, and is oscillated into the spherical particles 2012 after being refracted on the surface of the spherical particles 2012. Since the refractive index of the spherical particles 2012 and the refractive index of the organic material layer 2011 are different, the ambient light 1 is in the spherical particles.
  • the interface between 2012 and the organic material layer 2011 is reflected, and then injected into the air from the spherical particles 2012. Since the spherical particles 2012 are spherical, it is possible to obtain that the incident light entering the spherical particles 2012 and the outgoing light emitted from the spherical particles 2012 are parallel to each other according to the geometric relationship, that is, the ambient light 1 is retroreflected in the retroreflective region 201. As can be seen from Fig. 7, no matter which angle of ambient light (e.g., ambient light 1 and ambient light 2) is incident on the retroreflective region 201, the light is reflected back to or near the original path.
  • ambient light 1 and ambient light 2 is incident on the retroreflective region 201
  • the ambient light 1 is incident from the air to the surface of the spherical particles 2012, and most of the light is refracted into the spherical particles 2012 after being refracted on the surface of the spherical particles 2012, and some of the light may be directly reflected on the surface of the spherical particles 2012. Do not enter the spherical particles in 2012. Since the light directly reflected on the surface of the spherical particles 2012 is very small, only a small amount of light directly reflected on the surface of the spherical particles 2012 enters the human eye, and thus the influence of the portion of the light on the display screen viewed by the viewer can be ignored.
  • the exemplary earth-like particles 2012 have a diameter of 1 to 10 ⁇ m.
  • the refractive index of the spherical particles 2012 and the refractive index of the organic material layer 2011 are different, and the refractive index of the spherical particles 2012 may be greater than the refractive index of the organic material layer 2011, or the refractive index of the organic material layer 2011 may be larger than the spherical shape.
  • the difference between the refractive index of the material and the refractive index of the material forming the organic material layer 2011 should be as large as possible, and the larger the difference between the refractive index of the organic material layer 2011 and the refractive index of the spherical particles 2012, the higher the reflectance, the retroreflection The better the effect.
  • the material of the organic material layer 2011 is tantalum pentoxide (Nb 2 O 5 )
  • the material of the spherical particles 2012 is polymethyl methacrylate (PMMA) or polycarbonate (PC).
  • the retroreflective region 201 of the retroreflective layer 20 includes the organic material layer 2011 and the plurality of transparent spherical particles 2012, and the refractive index of the spherical particles 2012 and the refractive index of the organic material layer 2011 are different, the ambient light is When incident on the retroreflective region 201 of the retroreflective layer 20, retroreflection occurs, thereby preventing ambient light from entering the human eye and affecting the viewer's viewing of the display.
  • the efficiency of retroreflection includes two aspects, one is the ratio of the incident light coupled into it, and the other is the ratio of the reflected light coupled out. If the spherical particles 2012 are all embedded in the organic material layer 2011, there is no coupled light; on the contrary, if the spherical particles 2012 are disposed on the organic material layer 2011, all of which are not embedded in the organic material layer 2011, no reflected light is coupled out. Based on this, in the embodiment of the present invention, the height of the spherical particles 2012 embedded in the organic material layer 2011 is equal to one-half of the diameter of the spherical particles 2012.
  • the retroreflective efficiency of the retroreflective region 201 can be maximized.
  • the retroreflective region 201 of the retroreflective layer 20 has a retroreflective effect on ambient light, retroreflection occurs when light emitted from the display panel 01 is incident on the retroreflective region 201, which affects the display panel 01.
  • the light exiting rate thus the embodiment of the present invention exemplarily, as shown in FIGS.
  • the display panel 01 is disposed on the side of the retroreflective layer 20 away from the surface of the display panel 01, and
  • the pixel area 101 corresponds to the converging lens 30; wherein the main optical axis of the converging lens 30 is parallel to the thickness direction of the display panel 01, and the main optical axis of the converging lens 30 passes through the center of the transmissive area 202 of the retroreflective layer 20.
  • the condenser lens 30 is also called a convex lens, and can converge the light beam.
  • the type of the condenser lens 30 is not limited, and may be a lenticular lens, a plano-convex lens, or a lenticular lens. Since each film layer of the display panel 01 is substantially flat, the condenser lens 30 is exemplarily a plano-convex lens for the convenience of providing the condenser lens 30.
  • the condenser lens 30 is used to condense the light emitted from the pixel area 101 of the display panel 01.
  • the liquid crystal display panel is a liquid crystal display through the backlight assembly.
  • the panel provides a light source, and thus the condenser lens 30 can be disposed at any position between the side of the retroreflective layer 20 remote from the surface of the display panel 01 and the backlight assembly; when the display panel 01 is an organic electroluminescent diode display panel, the organic light emitting The diode display panel emits light through the light emitting layer, and thus the condenser lens 30 can be disposed at any position of the retroreflective layer 20 away from the surface of the display panel 01 and between the light emitting layers.
  • the display panel 01 includes the converging lens 30 corresponding to the pixel area 101, and the main optical axis of the converging lens 30 passes through the center of the transmissive area 202 of the retroreflective layer 20, the light emitted by the pixel area 101 is The converging lens 30 can be emitted from the transmissive region 202 after being concentrated.
  • the focus of the condenser lens 30 may be located outside the display panel 01 as shown in FIG. 8( a ), or may be located in the display panel 01 as shown in FIG. 8( b ), or may be as shown in FIG. 8( c ). Located on the light exiting side surface of the display panel 01.
  • the focal length of the condensing lens 30 is equal to the distance from the condensing lens 30 to the light-emitting side surface of the display panel 01 (the thickness of the condensing lens 30 is negligible at this time).
  • the pixel area 101 is in one-to-one correspondence with the condensing lens 30.
  • the condensing lens 30 may cover the pixel area 101.
  • the condensing lens 30 and the pixel area 101 may overlap, but may converge.
  • the lens 30 does not cover the pixel area 101.
  • the converging lens 30 covers the pixel region 101 exemplarily in the thickness direction of the display panel 01.
  • the converging lens 30 can converge the light emitted from the pixel area 101 of the display panel 01, and the main optical axis of the converging lens 30 is worn.
  • the center of the transmissive region 202 of the retroreflective layer 20 is such that more light can be emitted from the transmissive region 202 of the retroreflective layer 20.
  • the area of the retroreflective layer 20 is constant, if the area of the transmissive area 202 is reduced, the area of the retroreflective area 201 is increased, and the area of the retroreflective area 201 is increased further on the display panel 01. After the surface is reflected, it enters the ambient light of the human eye, so that the display effect of the display panel 01 can be further improved. Based on this, since the converging lens 30 can converge the light, even if the area of the transmissive area 202 is set small, light can be emitted from the transmissive area 202, so that the area of the transmissive area 202 can be set smaller, and the retroreflective area is set. The area of 201 is increased.
  • the light converges after the converging lens 30 converges, if the focus of the condensing lens 30 is located in the display panel 01, after the light converges through the condensing lens 30 and then diverge, a part of the light may be blocked by the retroreflective region 201 (as shown in the figure). 8(b) in the dotted circle), so that part of the light may not be emitted; if the focus of the condenser lens 30 is outside the display panel 01, and the focal length of the condenser lens 30 is far from the light-emitting side surface of the display panel 01 It is possible that a part of the light is blocked by the retroreflective region 201 (as indicated by the dashed circle in Fig.
  • the transmissive area 202 covers the spot formed by the light concentrated by the converging lens 30 on the retroreflective layer 20.
  • the transmission region 202 covers the spot formed by the light concentrated by the condenser lens 30 on the retroreflective layer 20, and may be the boundary of the spot formed by the boundary of the transmissive region 202 and the light concentrated by the converging lens 30 at the retroreflective layer 20.
  • the overlap may be such that the boundary of the transmissive region 202 surrounds the boundary of the spot formed by the light concentrated by the converging lens 30 at the retroreflective layer 20.
  • the spot size formed by the light concentrated by the converging lens 30 in the retroreflective layer 20 can be obtained according to the curvature of the converging lens 30 and the distance from the converging lens 30 to the retroreflective layer 20, and the transmissive area 202 can be designed according to the size of the spot.
  • the size is such that light emerging from the pixel region 101 can exit from the transmissive region 202.
  • the transmissive area 202 is larger than the spot formed by the converging lens 30 in the retroreflective layer 20, most of the light concentrated by the converging lens 30 can be emitted from the transmissive area 202, thereby improving the display panel. 01 light emission rate.
  • the focal length of the condenser lens 30 and the distance from the center of the condenser lens 30 to the light-emitting side surface of the display panel are equal, not only the light emitted from the pixel region can be ensured as much as possible, but also when the display panel 01 is manufactured,
  • the curvature of the converging lens 30 is calculated from the distance from the center of the converging lens 30 to the light-emitting side surface of the display panel 01 to produce a converging lens 30 of a corresponding curvature.
  • the focal length of the converging lens 30 and the converging lens are exemplarily The distance from the center of the 30 to the light-emitting side surface of the display panel 01 is equal.
  • the display panel 01 includes a color resist pattern, and the light incident side surface of the color resist pattern is convex away from the retroreflective layer 20 to form the condenser lens 30.
  • the color resist pattern may include a red photoresist pattern, a green photoresist pattern, and a blue photoresist pattern. As shown in FIG. 9, the color resist patterns may be spaced apart by the black matrix pattern 40.
  • the color resist pattern is the converging lens 30, the color resist pattern can function as a filter or as a condenser lens 30.
  • the color resist pattern is the converging lens 30
  • the light is concentrated after passing through the color resist pattern, so that more light can be emitted from the transmissive area 202.
  • the color resist pattern can be concentrated while filtering, it is not necessary to additionally provide a converging lens, so that the thickness of the display panel 01 can be reduced.
  • the display panel 01 further includes a flat layer (OC) 50 covering the converging lens 30.
  • the convex surface; the refractive index of the flat layer 50 is smaller than the refractive index of the condenser lens 30.
  • the material of the flat layer 50 is not limited as long as it is a transparent material.
  • the converging lens 30 has a convex surface
  • the flat layer 50 when the flat layer 50 is formed on the convex surface, the flat layer 50 has a concave surface, and the converging lens 30 and the flat layer 50 disposed at the position opposite to the converging lens form a lens group.
  • the concentrating lens 30 can be a plano-convex lens.
  • the concentrating lens 30 has a convex surface.
  • the embodiment of the present invention is exemplified by the fact that the condensing lens 30 has a convex surface.
  • the focal length f of the lens group is:
  • N 1 is the refractive index of the condenser lens
  • f 1 is the focal length of the condenser lens
  • N 2 is the refractive index of the flat layer 50
  • f 1 is the focal length of the flat layer 50.
  • the flat layer 50 can be used.
  • the refractive index and the refractive index of the condensing lens 30 are reasonably set to the curvature of the condensing lens 30 and the curvature of the flat layer 50.
  • the flat layer 50 has a refractive index of 1.5 to 1.6
  • the condenser lens 30 has a refractive index of 1.5 to 1.7.
  • the flat layer 50 in which the converging lens 30 and the converging lens 30 face each other is a circular arc surface
  • the curvature on the circular arc surface is equal
  • the focal length of the converging lens 30 is equal to R/2
  • the focal length of the flat layer 50 is equal to -R /2
  • R is the radius of the flat layer 50 facing the converging lens 30 and the converging lens 30.
  • the refractive index of the flat layer 50 is 1.53
  • the refractive index of the condenser lens 30 is 1.56, and the distance t of the lens group to the light-emitting side surface of the display panel 01 is 0.4 mm
  • the curvature of the condenser lens is 41.667 (1/mm).
  • Embodiments of the present invention provide a display device including a display panel 01 and a backlight assembly for emitting collimated light or approximately collimated light.
  • the direction of the light source can be realized by using a backlight of the reverse prism or attaching a 3M louver type anti-spy film or the like so that the light emitted from the backlight assembly is collimated light or approximately collimated light.
  • the display device when the display device is a liquid crystal display device, and the light emitted from the backlight assembly is collimated light or approximately collimated light, the collimated light or the approximately collimated light is more easily reflected from the retroreflection after being concentrated by the converging lens 30.
  • the transmissive region 202 of layer 20 exits, thereby increasing the utilization of light exiting the backlight assembly.
  • Embodiments of the present invention provide a display panel and a display device.
  • the display panel includes a retroreflective layer disposed on a light exiting side, and the retroreflective layer includes a retroreflective region that allows light incident thereon to be incident along the incident direction.
  • the ambient light when the ambient light is incident on the retroreflective region, it will be reflected in the opposite direction of the incident direction of the ambient light or in the opposite direction to the incident direction, so that the ambient light incident on the retroreflective region of the display panel It will not reflect into the human eye, so no matter how the ambient light is reflected on the surface of the display panel (specular reflection, diffuse reflection, Fresnel reflection, etc.), as long as the ambient light is incident on the retroreflective region of the display panel, it will be reversed.
  • the reflection can reduce the ambient light that enters the human eye after being reflected on the surface of the display panel, thereby improving the visual effect when the display panel is viewed.

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Abstract

一种显示面板(01)及显示装置。该显示面板(01)包括设置在出光侧的逆反射层(20)；逆反射层(20)包括逆反射区(201)和透射区(202)，逆反射区(201)用于使射到其上的光沿入射方向的反方向或接近入射方向的反方向反射；其中，显示面板(01)包括像素区域(101)和用于界定像素区域(101)的像素界定区域(102)；沿显示面板(01)的厚度方向，像素区域(101)与逆反射层(20)的透射区(202)具有重叠区域。该显示面板(01)及显示装置可减少在显示面板(01)表面反射后进入到人眼的环境光。

Description

显示面板及显示装置 技术领域
本发明的实施例涉及一种显示面板及显示装置。
背景技术
随着显示技术的快速发展，各种显示装置应运而生。然而，目前显示装置的设计普遍受环境光(Ambient light)的影响，环境光入射到显示装置的表面，在显示装置表面发生反射，这些光通过镜面反射、漫反射、菲涅尔反射等方式，会伴随着显示装置发出的信息光进入人眼，从而会影响观看者的观看效果。示例的，对于大尺寸显示装置，显示装置表面发生菲涅尔反射，不同入射角度的环境光反射率不同，从而会导致显示装置边缘发白，这样发生菲涅尔反射的光进入人眼后，人眼观看到的便是边缘发白的显示画面；而镜面反射会造成眩光(Glare)问题，这样镜面反射的光进入人眼后会影响画面观看；漫反射的光进入人眼后会降低显示装置显示的环境对比度(Ambient Contrast)。
发明内容
本发明的实施例提供一种显示面板及显示装置，可减少在显示面板表面反射后进入到人眼的环境光。
一方面，提供一种显示面板，包括设置在出光侧的逆反射层；所述逆反射层包括逆反射区和透射区，所述逆反射区用于使射到其上的光沿入射方向的反方向或接近入射方向的反方向反射；其中，所述显示面板包括像素区域和用于界定所述像素区域的像素界定区域；沿所述显示面板的厚度方向，所述像素区域与所述透射区至少部分重叠。
示例性地，沿所述显示面板的厚度方向，所述逆反射区与所述显示面板的像素界定区域至少部分重叠。
示例性地，沿所述显示面板的厚度方向，所述逆反射区与所述显示面板的像素界定区域及部分像素区域重叠。
示例性地，沿所述显示面板的厚度方向，所述像素区域与所述透射区完全重叠。
示例性地，所述逆反射层的透射区为镂空结构。
示例性地，所述逆反射层的逆反射区包括有机材料层和多个透明的球状颗粒，所述球状颗粒部分嵌入在所述有机材料层中；所述球状颗粒未嵌入所述有机材料层的部分靠近所述显示面板的外侧；所述球状颗粒的折射率和所述有机材料层的折射率不同。
示例性地，所述球状颗粒的直径为1～10μm。
示例性地，所述有机材料层的材料为五氧化二铌，所述球状颗粒的材料为聚甲基丙烯酸甲酯或聚碳酸酯。
示例性地，所述球状颗粒嵌入所述有机材料层的高度等于所述球状颗粒直径的二分之一。
示例性地，所述显示面板包括设置在所述逆反射层的远离所述显示面板表面一侧，且与所述像素区域一一对应的会聚透镜；其中，所述会聚透镜的主光轴平行于所述显示面板的厚度方向，且所述会聚透镜的主光轴穿过所述逆反射层的透射区中心。
示例性地，所述透射区覆盖所述会聚透镜会聚后的光在所述逆反射层处形成的光斑。
示例性地，所述会聚透镜的焦距与所述会聚透镜中心到所述显示面板出光侧表面的距离相等。
示例性地，所述显示面板包括彩色光阻图案，所述彩色光阻图案的入光侧表面向远离所述逆反射层的方向凸起，以形成所述会聚透镜。
示例性地，所述显示面板还包括平坦层，所述平坦层覆盖所述会聚透镜的凸面；所述平坦层的折射率小于所述会聚透镜的折射率。
示例性地，所述显示面板为有机发光二极管显示面板，所述会聚透镜设置在所述显示面板的发光层与所述逆反射层的远离所述显示面板表面的一侧之间。
示例性地，所述显示面板为液晶显示面板，背光组件为所述显示面板提供背光，所述会聚透镜设置在所述背光模组与所述逆反射层的远离所述显示面板表面的一侧之间。
另一方面，提供一种显示装置，包括上述的显示面板。
示例性地，所述显示装置还包括背光组件，所述背光组件用于发出准直光或近似准直光。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1(a)为本发明实施例提供的一种显示面板的结构示意图一；
图1(b)为本发明实施例提供的一种显示面板的结构示意图二；
图2为本发明实施例提供的显示面板和现有技术提供的显示面板的效果对比图；
图3为本发明实施例提供的一种显示面板的结构示意图三；
图4为本发明实施例提供的一种显示面板的结构示意图四；
图5为本发明实施例提供的一种显示面板的结构示意图五；
图6为本发明实施例提供的一种显示面板的结构示意图六；
图7为本发明实施例提供的一种逆反射区发生逆反射的原理示意图；
图8(a)为本发明实施例提供的一种显示面板的结构示意图七；
图8(b)为本发明实施例提供的一种显示面板的结构示意图八；
图8(c)为本发明实施例提供的一种显示面板的结构示意图九；
图9为本发明实施例提供的一种显示面板的结构示意图十；
图10为本发明实施例提供的一种显示面板的结构示意图十一。
附图标记：
01-显示面板；02-现有技术提供的显示面板；10-衬底基板；101-像素区域；102-像素界定区域；20-逆反射层；201-逆反射区；2011-有机材料层；2012-球状颗粒；202-透射区；30-会聚透镜；40-黑矩阵图案；50-平坦层。
具体实施方式
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
可以采用曲面屏设计或贴附抗眩膜(Anti-glare Film，简称AG Film)等 方式来防止眩光。曲面屏只能解决曲面屏中心位置因镜面反射造成的眩光问题，而其它位置依然会发生镜面反射，这样发生镜面反射的光还是会进入人眼；另外，贴附抗眩膜不能解决漫反射和菲涅尔反射所带来的画面显示效果衰减的问题；贴附AG膜虽然可以解决镜面反射造成的眩光问题，但是并不能阻止环境光(以漫反射等方式)进入人眼，漫反射光进入人眼后会降低显示装置的环境对比度。
本发明实施例提供一种显示面板(Panel)01，如图1(a)和图1(b)所示，包括设置在出光侧的逆反射层20；逆反射层20包括逆反射区201和透射区202，逆反射区201用于使射到其上的光沿入射方向的反方向或接近入射方向的反方向反射(Retro-reflection)(如图1(a)中单箭头所示)；其中，显示面板01包括像素区域101和用于界定像素区域101的像素界定区域102；沿显示面板01的厚度方向，像素区域101与透射区202具有重叠区域。
其中，对于逆反射层20中逆反射区201的结构不进行限定，以逆反射区201能够使射到其上的光发生逆反射，即，使射到其上的光沿入射方向的反方向或接近入射方向的反方向反射为准。此外，对于透射区202的结构，以能使光透过为准，可以设置能使光透光的膜层，也可以是任何膜层都不设置。当透射区202设置能使光透光的膜层时，透射区202的材料应是具有高透过率的材料，例如可以是SiO 2等。在此基础上，逆反射层20可以通过涂覆的方式形成在出光侧。
此外，对于显示面板的类型不进行限定，显示面板可以液晶显示面板，也可以是有机电致发光二级管显示面板。当显示面板为液晶显示面板时，需要背光组件(Back Light Unit，简称BLU)为显示面板01提供光源，此时显示面板01包括阵列基板、对盒基板以及设置在阵列基板和对盒基板之间的液晶层。在此基础上，当显示面板为液晶显示面板时，像素区域101指的是透光区域，像素界定区域102指的是非透光区域，即黑矩阵区域(Black Matrix，简称BM)。当显示面板为有机电致发光二极管显示面板时，有机电致发光二极管显示面板包括阳极、阴极和有机层。此时，显示面板01的像素区域101指的是发光区域，像素界定区域102指的是非发光区域。
需要说明的是，逆反射层20设置在出光侧，可以是如本发明说明书附图所示，逆反射层20设置在衬底基板10出光侧表面，当显示面板01还包括偏光片时，逆反射层20还可以设置在偏光片的出光侧表面。
本发明说明书附图的显示面板01仅示意出逆反射层20、衬底基板10以及其它与本发明点有关的部分，对于其它与本发明点有关的部分均未示意出。
示例性地，对于液晶显示面板，衬底基板10可以是彩膜基板的衬底基板，该彩膜基板与阵列基板相对设置，且二者之间夹置液晶层。
例如，对于有机发光二极管显示面板，衬底基板10可以是显示面板的出光侧的盖板，或者如果该显示面板包括彩膜，该衬底基板10可以是出光侧的设置有彩膜的基板的衬底基板，本公开的实施例并不对此进行限制。
在此基础上，沿显示面板01的厚度方向，可以是如图1(a)所示，逆反射区201覆盖显示面板01的像素界定区域102；也可以是如图1(b)所示，逆反射区201与显示面板01的部分像素界定区域102具有重叠区域。
此处，如图2所示，01为本发明实施例提供的显示面板，02为现有技术提供的显示面板，环境光在入射到现有技术提供的显示面板的表面后，会被反射进入到人眼，而环境光在入射到本发明实施例提供的显示面板01的表面后会沿环境光的入射方向的反方向或接近入射方向的反方向反射，因而入射到显示面板表面的环境光不会进入人眼，进而不会影响显示面板的显示效果。一般认为人眼不是光源，即使考虑其作为二次光源，由于人眼入射到显示面板01表面的光非常少，这部分反射的光对显示的影响也非常小，可以不予考虑。
本发明实施例提供一种显示面板01，由于显示面板01包括设置在出光侧的逆反射层20，而逆反射层20包括逆反射区201，逆反射区201可以使射到其上的光沿入射方向的反方向或接近入射方向的反方向反射，因而当环境光入射到逆反射区201后会沿环境光入射方向的反方向或接近入射方向的反方向反射，这样入射到显示面板01逆反射区201的环境光便不会反射进入人眼，因此无论环境光在显示面板01表面发生何种方式的反射(镜面反射、漫反射、菲涅尔反射等)，只要环境光入射到显示面板01的逆反射区201都会发生逆反射，这样便可以减少在显示面板01表面发生反射后进入到人眼的环境光，从而可以提高显示面板01的观看时的视觉效果。
示例性地，如图3所示，沿显示面板01的厚度方向，逆反射区201与显示面板01的像素界定区域102重叠。
其中，逆反射区201与显示面板01的像素界定区域102重叠，此时逆反射区201和像素界定区域102的形状、大小均相同。
本发明实施例，由于像素界定区域102没有光出射，当逆反射区201与显示面板01的像素界定区域102重叠时，因而不会影响显示面板01光的正常出射，因此不会影响到显示面板01的显示效果。此外，在显示面板01尺寸一定的情况下，由于逆反射区201的面积越大，入射到显示面板01表面并在显示面板01表面反射后进入到人眼的环境光越少，越有利于提高显示面板01的显示效果，因此相对于逆反射区201与部分像素界定区域102具有重叠区域，本发明实施例逆反射区201与显示面板01的像素界定区域102重叠，这样可以增加逆反射区201的面积，从而可以减少在显示面板01表面反射后进入到人眼的环境光。
由于逆反射区201的面积占逆反射层20的面积的比例越大，在显示面板01表面发生反射后进入到人眼的环境光越少，越有利于提高显示面板01的显示效果，因而示例性地，如图1(a)和图4所示，沿显示面板01的厚度方向，逆反射区201与显示面板01的像素界定区域102及部分像素区域101重叠，这样当环境光入射到显示面板01的像素界定区域102和被逆反射区201覆盖的像素区域101后，会沿入射光的反方向或接近入射方向的反方向反射，因而进入人眼的环境光会减少，从而可以进一步提高显示面板01的显示效果。
基于上述，需要说明的是，从显示面板01的像素区域101出射的光可以从逆反射层20的透射区202出射。
示例性地，如图5所示，逆反射层20的透射区202为镂空结构。
其中，逆反射层20的透射区202为镂空结构，即指逆反射层20的透射区202不设置任何结构。
本发明实施例，由于逆反射层20的透射区202为镂空结构，一方面当显示面板01的像素区域101出射的光从透射区202出射时，透射区202不会影响显示面板01光的透光率；另一方面，可以降低生产成本。
示例性地，如图6所示，逆反射层20的逆反射区201包括有机材料层2011和多个透明的球状颗粒2012，球状颗粒2012部分嵌入在有机材料层2011中，球状颗粒2012未嵌入有机材料层2011的部分靠近显示面板01的外侧；其中，球状颗粒2012的折射率和有机材料层2011的折射率不同。
其中，对于有机材料层2011的具体材料不进行限定，例如可以是树脂层(Resin)。对于球状颗粒2012的材料不进行限定，例如可以是玻璃。
此处，当逆反射区201包括有机材料层2011和多个透明的球状颗粒2012时，逆反射区201发生逆反射的原理具体如图7所示，以环境光1为例进行示意，环境光1从空气入射至球状颗粒2012的表面，在球状颗粒2012表面发生折射后射入球状颗粒2012内，由于球状颗粒2012的折射率和有机材料层2011的折射率不同，因而环境光1在球状颗粒2012和有机材料层2011的界面发生反射，之后从球状颗粒2012内射入至空气中。由于球状颗粒2012为球形，根据几何关系可以得到进入到球状颗粒2012内的入射光和从球状颗粒2012出射的出射光是相互平行的，即环境光1在逆反射区201发生逆反射。从附图7可以看出，无论环境光以哪个角度(例如环境光1和环境光2)入射到逆反射区201，光都被原路反射回或接近原路反射回。需要说明的是，环境光1从空气入射至球状颗粒2012的表面，大部分光在球状颗粒2012表面发生折射后射入球状颗粒2012内，还有部分光可能在球状颗粒2012的表面直接发生反射，不进入球状颗粒2012内。由于在球状颗粒2012表面直接发生反射的光非常少，因此只有少量的在球状颗粒2012表面直接发生反射的光进入人眼，因而该部分光对观看者观看的显示画面的影响可以不予以考虑。
基于上述，为了确保逆反射区201具有良好的逆反射效果，因而示例性地球状颗粒2012的直径为1～10μm。
需要说明的是，球状颗粒2012的折射率和有机材料层2011的折射率不同，可以是球状颗粒2012的折射率大于有机材料层2011的折射率，也可以是有机材料层2011的折射率大于球状颗粒2012的折射率。由于有机材料层2011的折射率和球状颗粒2012的折射率相差越大，环境光在球状颗粒2012和有机材料层2011的界面处的反射率越高，因而例如，本发明实施例形成球状颗粒2012的材料的折射率和形成有机材料层2011的材料的折射率的差值应尽可能大，有机材料层2011的折射率和球状颗粒2012的折射率相差的越大，反射率越高，逆反射效果越好。示例性地，有机材料层2011的材料为五氧化二铌(Nb 2O 5)，球状颗粒2012的材料为聚甲基丙烯酸甲酯(PMMA)或聚碳酸酯(PC)。
本发明实施例，由于逆反射层20的逆反射区201包括有机材料层2011和多个透明的球状颗粒2012，且球状颗粒2012的折射率和有机材料层2011的折射率不同，因而当环境光入射到逆反射层20的逆反射区201时，会发生逆反射，从而可以避免环境光反射后进入人眼，影响观看者观看显示画面。
由于逆反射效率包括两个方面，一个是入射光耦合入的比例，另外就是反射光耦合出的比例。如果球状颗粒2012全部嵌入有机材料层2011，则没有耦合入的光；相反，如果球状颗粒2012设置在有机材料层2011上，全部不嵌入有机材料层2011，则没有反射光耦合出。基于此，本发明实施例进一步地，球状颗粒2012嵌入有机材料层2011的高度等于球状颗粒2012直径的二分之一。
本发明实施例，当球状颗粒2012嵌入有机材料层2011的高度等于球状颗粒2012直径的二分之一时，逆反射区201的逆反射效率可以达到最高。
由于逆反射层20的逆反射区201除了对环境光有逆反射作用外，对于从显示面板01出射的光在射入到逆反射区201时也会发生逆反射，而这样会影响显示面板01光的出射率，因而本发明实施例示例性地，如图8(a)和图8(b)所示，显示面板01包括设置在逆反射层20的远离显示面板01表面一侧，且与像素区域101一一对应的会聚透镜30；其中，会聚透镜30的主光轴平行于显示面板01的厚度方向，且会聚透镜30的主光轴穿过逆反射层20的透射区202中心。
其中，会聚透镜30也称凸透镜，可以对光束起会聚作用。此处，对于会聚透镜30的类型不进行限定，可以是双凸透镜、平凸透镜或月凸形透镜。由于显示面板01的每个膜层基本都是平的，因而为了便于设置会聚透镜30，因此示例性地会聚透镜30为平凸透镜。
此处，本领域技术人员应该明白，会聚透镜30用于对从显示面板01的像素区域101出射的光进行会聚，当显示面板01为液晶显示面板时，液晶显示面板是通过背光组件为液晶显示面板提供光源，因而会聚透镜30可以设置在逆反射层20的远离显示面板01表面一侧与所述背光组件之间的任意位置；当显示面板01为有机电致发光二极管显示面板时，有机发光二极管显示面板通过发光层发光，因而会聚透镜30可以设置在逆反射层20的远离显示面板01表面一侧和发光层之间的任意位置。
需要说明的是，由于显示面板01包括与像素区域101一一对应的会聚透镜30，且会聚透镜30的主光轴穿过逆反射层20的透射区202中心，因而像素区域101发出的光经会聚透镜30会聚后可以从透射区202出射。此外，会聚透镜30的焦点可以如图8(a)所示位于显示面板01外，也可以如图8(b)所示位于显示面板01内，当然也可以是如图8(c)所示位于显示面板01的 出光侧表面。当会聚透镜30的焦点位于显示面板01的出光侧表面时，会聚透镜30的焦距等于会聚透镜30到显示面板01出光侧表面的距离(此时会聚透镜30的厚度可以忽略不考虑)。
在此基础上，像素区域101与会聚透镜30一一对应，沿显示面板01的厚度方向，可以是会聚透镜30覆盖像素区域101；也可以是会聚透镜30与像素区域101具有重叠区域，但会聚透镜30没有覆盖像素区域101。为了使从像素区域101出射的光都能够尽可能地从透射区202出射，因而本发明实施例中，示例性地，沿显示面板01的厚度方向，会聚透镜30覆盖像素区域101。
本发明实施例，由于显示面板01包括与像素区域101一一对应的会聚透镜30，而会聚透镜30可以对从显示面板01像素区域101出射的光进行会聚，且会聚透镜30的主光轴穿过逆反射层20的透射区202中心，这样便可以使更多的光可以从逆反射层20的透射区202出射。
在此基础上，在逆反射层20面积一定的情况下，若透射区202的面积减小，逆反射区201的面积就会增加，而逆反射区201的面积增加可以进一步减少在显示面板01表面反射后进入到人眼的环境光，从而可以进一步提高显示面板01的显示效果。基于此，由于会聚透镜30可以对光进行会聚，即使透射区202的面积设置的较小，光也可以从透射区202出射，因而可以将透射区202的面积设置的较小，将逆反射区201的面积增大。
由于光经会聚透镜30会聚后又会发散，因而若会聚透镜30的焦点位于显示面板01内，则当光线经过会聚透镜30会聚再发散后，可能一部分光会被逆反射区201阻挡(如图8(b)中虚线圈所示)，从而导致部分光可能不能出射；若会聚透镜30的焦点位于显示面板01外，且会聚透镜30的焦点距显示面板01的出光侧表面的距离较远时，可能一部分光会被逆反射区201阻挡(如图8(a)中的虚线圈所示)，从而导致部分光可能不能出射。基于此，如图8(c)所示，在本发明实施例中，示例性地，透射区202覆盖会聚透镜30会聚后的光在逆反射层20形成的光斑。
需要说明的是，透射区202覆盖会聚透镜30会聚后的光在逆反射层20形成的光斑，可以是透射区202的边界与会聚透镜30会聚后的光在逆反射层20形成的光斑的边界重叠，也可以是透射区202的边界包围会聚透镜30会聚后的光在逆反射层20形成的光斑的边界。
此处，可以根据会聚透镜30的曲率和会聚透镜30到逆反射层20的距离获得会聚透镜30会聚后的光在逆反射层20形成的光斑大小，再根据所述光斑的大小设计透射区202的大小，以使从像素区域101出射的光都可以从透射区202出射。
本发明实施例，由于透射区202大于会聚透镜30会聚后的光在逆反射层20形成的光斑，因而这样经会聚透镜30会聚的大部分光便可以从透射区202出射，从而提高了显示面板01光的出射率。
本发明实施例，当会聚透镜30的焦距与会聚透镜30中心到显示面板出光侧表面的距离相等时，不仅可以确保从像素区域出射的光尽可能地多，而且在制作显示面板01时，可以根据会聚透镜30中心到显示面板01出光侧表面的距离推算出会聚透镜30的曲率，以制作相应曲率的会聚透镜30，因而本发明实施例中，示例性地，会聚透镜30的焦距与会聚透镜30中心到显示面板01出光侧表面的距离相等。
进一步地，如图9所示，显示面板01包括彩色光阻图案，彩色光阻图案的入光侧表面向远离逆反射层20的方向凸起，以形成会聚透镜30。
其中，彩色光阻图案可以包括红色光阻图案、绿色光阻图案和蓝色光阻图案。如图9所示，彩色光阻图案之间可以通过黑矩阵图案40间隔开。
此处，由于彩色光阻图案为会聚透镜30，因而彩色光阻图案既可以起到滤光的作用，又可以起到会聚透镜30的作用。
本发明实施例，由于彩色光阻图案为会聚透镜30，因而光经过彩色光阻图案后会进行会聚，从而可以使更多的光从透射区202出射。进一步地，由于彩色光阻图案在进行滤光同时，又可以对光进行会聚，因而无需额外设置会聚透镜，从而可以减小显示面板01的厚度。
由于会聚透镜30具有凸面，可能不利用其它膜层的设置，因而本发明实施例进一步地，如图10所示，显示面板01还包括平坦层(OC)50，平坦层50覆盖会聚透镜30的凸面；平坦层50的折射率小于会聚透镜30的折射率。
其中，对于平坦层50的材料不进行限定，只要是透明材料即可。
需要说明的是，由于会聚透镜30具有凸面，因而在凸面上形成平坦层50时，平坦层50则具有凹面，此时会聚透镜30和设置在会聚透镜正对位置的平坦层50组成一个透镜组。为了便于设置会聚透镜30，因而会聚透镜30可以为平凸透镜，此时会聚透镜30具有一个凸面，本发明实施例以会聚透镜 30具有一个凸面为例进行示意。
透镜组的焦距f为：
Figure PCTCN2018075855-appb-000001
其中，N 1为会聚透镜30的折射率，f 1为会聚透镜30的焦距，N 2为平坦层50的折射率，f 1为平坦层50的焦距。当透镜组的焦点位于显示面板01的出光侧表面时，透镜组的焦距f等于透镜组到显示面板01出光侧表面的距离t(此处，忽略会聚透镜30和平坦层50的厚度)，因此，
Figure PCTCN2018075855-appb-000002
基于上述，由于会聚透镜30的焦距与会聚透镜30的曲率有关、平坦层50的焦距与平坦层50的曲率有关，因而可以根据透镜组到显示面板01出光侧表面的距离t、平坦层50的折射率以及会聚透镜30的折射率合理设置会聚透镜30的曲率和平坦层50的曲率。一般地，平坦层50的折射率为1.5～1.6，会聚透镜30的折射率为1.5～1.7。
此处，当会聚透镜30和会聚透镜30正对的平坦层50均为圆弧面时，圆弧面上曲率处处相等，会聚透镜30的焦距等于R/2，平坦层50的焦距等于-R/2，R为会聚透镜30和会聚透镜30正对的平坦层50的半径，当透镜组的焦点位于显示面板01的出光侧表面时，则根据公式(1)和公式(2)可以得到：
Figure PCTCN2018075855-appb-000003
示例的，若平坦层50的折射率1.53，会聚透镜30的折射率为1.56，透镜组到显示面板01出光侧表面的距离t为0.4mm，则会聚透镜的曲率为41.667(1/mm)。
本发明实施例提供一种显示装置，包括显示面板01和背光组件，背光组件用于发出准直光或近似准直光。
此处，可以通过使用逆棱镜的背光或贴附3M百叶窗式防窥膜等实现指向光源(Directional BLU)的方式，以使得从背光组件出射的光为准直光或近似准直光。
本发明实施例，当显示装置为液晶显示装置，且从背光组件出射的光为准直光或近似准直光时，准直光或近似准直光经过会聚透镜30会聚后更容易从逆反射层20的透射区202出射，从而提高了对从背光组件出射的光的利用率。
本发明实施例提供一种显示面板及显示装置，由于显示面板包括设置在出光侧的逆反射层，而逆反射层包括逆反射区，逆反射区可以使射到其上的光沿入射方向的反方向或接近入射方向的反方向反射，因而当环境光入射到逆反射区后会沿环境光入射方向的反方向或接近入射方向的反方向反射，这样入射到显示面板逆反射区的环境光便不会反射进入人眼，因此无论环境光在显示面板表面发生何种方式的反射(镜面反射、漫反射、菲涅尔反射等)，只要环境光入射到显示面板的逆反射区都会发生逆反射，这样便可以减少在显示面板表面发生反射后进入到人眼的环境光，从而可以提高显示面板的观看时的视觉效果。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。
本申请要求于2017年6月8日递交的中国专利申请第201710428613.9号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (18)

  1. 一种显示面板，包括设置在出光侧的逆反射层；
    所述逆反射层包括逆反射区和透射区，所述逆反射区用于使射到其上的光沿入射方向的反方向或接近入射方向的反方向反射；
    其中，所述显示面板包括像素区域和用于界定所述像素区域的像素界定区域；沿所述显示面板的厚度方向，所述像素区域与所述透射区至少部分重叠。
  2. 根据权利要求1所述的显示面板，其中沿所述显示面板的厚度方向，所述逆反射区与所述显示面板的像素界定区域至少部分重叠。
  3. 根据权利要求1或2所述的显示面板，其中沿所述显示面板的厚度方向，所述逆反射区与所述显示面板的像素界定区域及部分像素区域重叠。
  4. 根据权利要求1或2所述的显示面板，其中沿所述显示面板的厚度方向，所述像素区域与所述透射区完全重叠。
  5. 根据权利要求1-4中任一项所述的显示面板，其中所述逆反射层的透射区为镂空结构。
  6. 根据权利要求1-5中任一项所述的显示面板，其中所述逆反射层的逆反射区包括有机材料层和多个透明的球状颗粒，所述球状颗粒部分嵌入在所述有机材料层中，所述球状颗粒未嵌入所述有机材料层的部分靠近所述显示面板的外侧；
    其中，所述球状颗粒的折射率和所述有机材料层的折射率不同。
  7. 根据权利要求6所述的显示面板，其中所述球状颗粒的直径为1～10μm。
  8. 根据权利要求6所述的显示面板，其中所述有机材料层的材料为五氧化二铌，所述球状颗粒的材料为聚甲基丙烯酸甲酯或聚碳酸酯。
  9. 根据权利要求6所述的显示面板，其中所述球状颗粒嵌入所述有机材料层的高度等于所述球状颗粒直径的二分之一。
  10. 根据权利要求1-9中任一项所述的显示面板，其中所述显示面板包括衬底基板，所述逆反射层设置在所述衬底基板上，所述显示面板还包括设置在所述衬底基板的与所述逆反射层相反的一侧，且与所述像素区域一一对 应的会聚透镜；
    其中，所述会聚透镜的主光轴平行于所述显示面板的厚度方向，且所述会聚透镜的主光轴穿过所述逆反射层的透射区中心。
  11. 根据权利要求10所述的显示面板，其中所述透射区覆盖所述会聚透镜会聚后的光在所述逆反射层处形成的光斑。
  12. 根据权利要求11所述的显示面板，其中所述会聚透镜的焦距与所述会聚透镜中心到所述显示面板出光侧表面的距离相等。
  13. 根据权利要求10所述的显示面板，其中所述显示面板包括彩色光阻图案，所述彩色光阻图案的入光侧表面向远离所述逆反射层的方向凸起，以形成所述会聚透镜。
  14. 根据权利要求10所述的显示面板，其中所述显示面板还包括平坦层，所述平坦层覆盖所述会聚透镜的凸面；
    所述平坦层的折射率小于所述会聚透镜的折射率。
  15. 根据权利要求10所述的显示面板，其中所述显示面板为有机发光二极管显示面板，所述会聚透镜设置在所述显示面板的发光层与所述衬底基板的与所述逆反射层相反的一侧之间。
  16. 根据权利要求10所述的显示面板，其中所述显示面板为液晶显示面板，背光组件为所述显示面板提供背光，所述会聚透镜设置在所述背光模组与所述衬底基板的与所述逆反射层相反的一侧之间。
  17. 一种显示装置，包括权利要求1-14中任一项所述的显示面板。
  18. 根据权利要求17所述的显示装置，其中所述显示装置还包括背光组件，所述背光组件用于发出准直光或近似准直光。
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