WO2020237789A1 - 背光结构和显示面板 - Google Patents

背光结构和显示面板 Download PDF

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Publication number
WO2020237789A1
WO2020237789A1 PCT/CN2019/095874 CN2019095874W WO2020237789A1 WO 2020237789 A1 WO2020237789 A1 WO 2020237789A1 CN 2019095874 W CN2019095874 W CN 2019095874W WO 2020237789 A1 WO2020237789 A1 WO 2020237789A1
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WO
WIPO (PCT)
Prior art keywords
light
backlight
structures
support plate
recessed portion
Prior art date
Application number
PCT/CN2019/095874
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English (en)
French (fr)
Inventor
丘永元
Original Assignee
惠州市华星光电技术有限公司
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Publication date
Application filed by 惠州市华星光电技术有限公司 filed Critical 惠州市华星光电技术有限公司
Priority to US16/619,092 priority Critical patent/US20210333639A1/en
Publication of WO2020237789A1 publication Critical patent/WO2020237789A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements
    • H01L33/60—Reflective elements

Definitions

  • This application relates to the field of electronic display, and in particular to a backlight structure and a display panel.
  • mini-LED sub-millimeter light-emitting diode
  • the present application provides a backlight structure and a display panel.
  • the backlight structure has a microlens array suitable for Mini-LEDs.
  • a backlight structure which includes:
  • a micro lens array the micro lens array is located above the backlight light source;
  • the microlens array includes a support plate, the support plate includes a first surface close to the backlight light source and a second surface away from the backlight light source, the first surface has a plurality of light incident structures, the The second surface has a plurality of light-emitting structures corresponding to the plurality of light-incident structures, and the plurality of light-incident structures and the plurality of light-emitting structures corresponding to the plurality of light-incident structures constitute a plurality of microlens structures;
  • the plurality of light-incident structures are roll-molded on the first surface by a first mold, and the plurality of light-emitting structures are roll-molded on the second surface by a second mold;
  • the plurality of micro lens structures are arranged in a strip shape along the first direction.
  • the backlight light source includes a plurality of sub-millimeter light-emitting diodes arranged on a lamp panel, and the plurality of sub-millimeter light-emitting diodes correspond to the plurality of microlens structures in a one-to-one correspondence.
  • each of the light incident structures includes a first protrusion structure
  • the first protruding structure has a first surface, and the first surface is attached to the surface of the light board;
  • the first protruding structure further includes a first recessed portion located at the geometric center of the first surface and corresponding to the sub-millimeter light emitting diode, and the surface of the first recessed portion constitutes the The light incident surface of the micro lens structure.
  • the first recessed portion has a hemispherical structure, and the sub-millimeter light emitting diode corresponding to the light incident structure is located at the center of the hemispherical structure.
  • each of the light-emitting structures includes a second protrusion structure
  • the second protruding structure has a second recess, the second recess is located at the geometric center of the second protruding structure, and the geometric center of the second protruding structure coincides with the geometric center of the first protruding structure ;
  • the second protruding structure further includes a second annular portion that surrounds the second recessed portion, and a surface of the second annular portion is a boundary connecting the second recessed portion and the support plate The smooth surface of the surface.
  • the material forming the support plate, the first protrusion structure, and the second protrusion structure is a light-transmitting material, and the light-transmitting material has thermoplasticity.
  • the surface of the second recessed portion is a mirror structure made of light-reflecting material, which constitutes the reflective surface of the microlens structure; the surface of the second annular portion constitutes the light output of the microlens structure surface.
  • the geometric centers of the first recessed portion and the second recessed portion coincide
  • the projection of the first recessed portion on the support plate is a circle
  • the second recessed portion The projection on the support plate is circular
  • the projection of the first recess on the support plate covers the projection of the second recess on the support plate.
  • the microlens array further includes a plurality of support posts, the plurality of support posts are arranged on the second surface of the support plate, and each support post is located on two adjacent microlenses. Structure between.
  • a backlight structure which includes:
  • a micro lens array the micro lens array is located above the backlight light source;
  • the microlens array includes a support plate, the support plate includes a first surface close to the backlight light source and a second surface away from the backlight light source, the first surface has a plurality of light incident structures, the The second surface has a plurality of light-emitting structures corresponding to the plurality of light-incident structures, and the plurality of light-incident structures and the plurality of light-emitting structures corresponding to the plurality of light-incident structures constitute a plurality of microlens structures;
  • the plurality of light-incident structures are roll-molded on the first surface by a first mold, and the plurality of light-emitting structures are roll-molded on the second surface by a second mold.
  • the backlight light source includes a plurality of sub-millimeter light-emitting diodes arranged on a lamp panel, and the plurality of sub-millimeter light-emitting diodes correspond to the plurality of microlens structures one-to-one.
  • each of the light incident structures includes a first protrusion structure
  • the first protruding structure has a first surface, and the first surface is attached to the surface of the light board;
  • the first protruding structure further includes a first recessed portion located at the geometric center of the first surface and corresponding to the sub-millimeter light emitting diode, and the surface of the first recessed portion constitutes the The light incident surface of the micro lens structure.
  • the first recessed portion has a hemispherical structure, and the sub-millimeter light emitting diode corresponding to the light incident structure is located at the center of the hemispherical structure.
  • each of the light-emitting structures includes a second protrusion structure
  • the second protruding structure has a second recess, the second recess is located at the geometric center of the second protruding structure, and the geometric center of the second protruding structure coincides with the geometric center of the first protruding structure ;
  • the second protruding structure further includes a second annular portion, the second annular portion surrounds the second recessed portion, and the surface of the second annular portion is a boundary connecting the second recessed portion and the support plate The smooth surface of the surface.
  • the material forming the support plate, the first protrusion structure, and the second protrusion structure is a light-transmitting material, and the light-transmitting material has thermoplasticity.
  • the surface of the second recessed portion is a mirror structure made of light-reflecting material, which constitutes the reflective surface of the microlens structure; the surface of the second annular portion constitutes the light output of the microlens structure surface.
  • the geometric centers of the first recessed portion and the second recessed portion coincide
  • the projection of the first recessed portion on the support plate is a circle
  • the second recessed portion The projection on the support plate is circular
  • the projection of the first recess on the support plate covers the projection of the second recess on the support plate.
  • the microlens array further includes a plurality of supporting pillars, the plurality of supporting pillars are arranged on the second surface of the supporting plate, and each supporting pillar is located on two adjacent microlenses. Structure between.
  • the multiple support columns have the same height, and the surfaces of the multiple support columns have a diffuse reflection structure.
  • the plurality of microlens structures are arranged in stripes along the first direction.
  • the present application also provides a display panel, the display panel includes a backlight structure, and the backlight structure includes:
  • a micro lens array the micro lens array is located above the backlight light source;
  • the microlens array includes a support plate, the support plate includes a first surface close to the backlight light source and a second surface away from the backlight light source, the first surface has a plurality of light-incident structures, the The second surface has a plurality of light exit structures corresponding to the plurality of light incident structures, and the plurality of light incident structures and the plurality of light exit structures corresponding to the plurality of light incident structures constitute a plurality of microlens structures;
  • the plurality of light-incident structures are roll-molded on the first surface by a first mold, and the plurality of light-emitting structures are roll-molded on the second surface by a second mold.
  • the present application provides a backlight structure.
  • the backlight structure has a support plate, a first surface of the support plate has multiple light incident structures, and a second surface of the support plate has multiple light incident structures.
  • the light-emitting structure corresponding to the structure, the multiple light-incident structures and the multiple light-emitting structures form multiple microlens structures.
  • the multiple light-incident structures and the multiple light-exit structures are formed by rolling with different molds.
  • the microlens array provided by the present application is manufactured by a roll forming method, which can form a large-area microlens array suitable for Mini-LED, and solves the technical problem that the microlens array cannot be suitable for Mini-LED in the prior art.
  • FIG. 1 is a schematic structural diagram of a microlens array in a specific embodiment of the application
  • FIG. 2 is a schematic diagram of the structure of a microlens in the microlens array in FIG. 1;
  • FIG. 3 is a schematic structural diagram of a backlight structure in a specific embodiment of the application.
  • the present application provides a backlight structure and a display panel.
  • the backlight structure has a microlens array suitable for Mini-LEDs.
  • Figure 1 is a schematic structural diagram of a microlens array in a specific embodiment of the application
  • Figure 2 is a schematic structural diagram of a microlens in the microlens array in Figure 1
  • Figure 3 is A schematic structural diagram of a backlight structure in a specific embodiment of the present application.
  • the backlight structure includes a backlight light source and a micro lens array, and the micro lens array is located above the backlight light source.
  • the microlens array includes a support plate 100.
  • the support plate 100 includes a first surface close to the backlight light source and a second surface far away from the backlight light source.
  • the first surface has a plurality of light incident structures 220, so
  • the second surface has a plurality of light emitting structures 210 corresponding to the plurality of light incident structures 220, and the plurality of light incident structures 220 and the plurality of light emitting structures 210 corresponding to the plurality of light incident structures 220 form a plurality of Micro lens structure.
  • the plurality of light-incident structures 220 are roll-molded on the first surface by a first mold, and the plurality of light-emitting structures 210 are roll-molded on the second surface by a second mold.
  • the backlight light source includes a plurality of sub-millimeter light-emitting diodes 400 arranged on the light board 500.
  • the backlight light source includes a plurality of light panels 500, the light panels 500 are strip-shaped light panels, and the plurality of sub-millimeter light-emitting diodes 400 are arranged in a strip shape along the first direction.
  • the plurality of light panels 500 are arranged along a second direction, and the second direction is perpendicular to the first direction.
  • the plurality of sub-millimeter light emitting diodes 400 correspond to the plurality of microlens structures in a one-to-one correspondence.
  • each of the light incident structures 220 includes a first protrusion structure.
  • the first protruding structure has a first surface 222, and the first surface 222 is attached to the surface of the light board 400.
  • the first protruding structure further includes a first recess 221, the first recess 221 is located at the geometric center of the first surface 222, corresponding to the sub-millimeter light emitting diode, the first recess 221
  • the surface constitutes the light incident surface of the microlens structure.
  • the first recess 221 has a hemispherical structure, and the sub-millimeter light emitting diode corresponding to the light incident structure 220 is located at the center of the hemispherical structure.
  • each light emitting structure 210 includes a second protrusion structure.
  • the second protruding structure has a second recess 211 located at the geometric center of the second protruding structure, the geometric center A of the second protruding structure and the geometric center of the first protruding structure The geometric centers A'coincide.
  • the second protruding structure further includes a second annular portion 212, the second annular portion 212 surrounds the second recessed portion 211, and the surface of the second annular portion 212 is connected to the second The boundary of the recess 211 and the smooth curved surface of the support plate 100.
  • the material forming the support plate 100, the first protrusion structure, and the second protrusion structure is a light-transmitting material, and the light-transmitting material has thermoplasticity. Due to the small size of sub-millimeter light-emitting diodes, the lens array production method in the prior art cannot produce millimeter-level microlenses.
  • a transparent material with thermoplasticity is used, and a microlens array is formed by embossing on the surface of the transparent material through a mold. This method can form microlens arrays with various shapes and sizes to meet the requirements of sub-millimeter light-emitting diodes for lens sizes. At the same time, this method is simple in process, low in cost, convenient for mass production, and can greatly improve the light mixing effect of the backlight structure using sub-millimeter light emitting diodes.
  • the surface of the second recessed portion 211 is a mirror structure made of light-reflecting material, which constitutes the reflective surface of the micro lens structure.
  • the surface of the second annular portion 212 constitutes the light-emitting surface of the microlens structure.
  • the geometric centers of the first concave portion 221 and the second concave portion 211 coincide, the projection of the first concave portion 221 on the support plate 100 is a circle, and the second concave portion 211 is in the The projection on the support plate 100 is circular, and the projection of the first recess 221 on the support plate 100 covers the projection of the second recess 211 on the support plate 100.
  • the microlens array further includes a plurality of supporting pillars 300 which are arranged on the second surface of the supporting plate 100, and each supporting pillar 300 is located on two adjacent microlenses. Structure between.
  • the heights of the supporting pillars 300 are the same. On the one hand, they are used to disperse the pressure exerted by other optical films on the microlens array and prevent the microlens array from cracking due to uneven forces. On the other hand, it can also ensure that the distance between the micro lens array and other optical films remains constant.
  • the material forming the plurality of supporting pillars 300 is a white material or a transparent material, and the surface of the plurality of supporting pillars 300 has a diffuse reflection structure.
  • the present application also provides a display panel including the backlight structure as described above.
  • the present application provides a backlight structure.
  • the backlight structure has a support plate, a first surface of the support plate has a plurality of light incident structures, and a second surface of the support plate has a plurality of light incident structures.
  • the light-emitting structure corresponding to the structure, and the multiple light-incident structures and the multiple light-emitting structures form multiple microlens structures.
  • the multiple light-incident structures and the multiple light-exit structures are formed by rolling with different molds.
  • the microlens array provided in the present application is manufactured by a roll forming method, which can form a large-area microlens array suitable for Mini-LED, and solves the technical problem that the microlens array cannot be suitable for Mini-LED in the prior art.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

一种背光结构和显示面板。背光结构包括：背光光源和微透镜阵列，微透镜阵列包括支撑板（100），支撑板（100）包括第一表面和第二表面，第一表面具有多个入光结构（220），第二表面具有多个与多个入光结构（220）对应的出光结构（210），多个入光结构（220）通过第一模具在第一表面上压滚成型，多个出光结构（210）通过第二模具在第二表面上压滚成型。

Description

背光结构和显示面板 技术领域
本申请涉及电子显示领域，尤其涉及一种背光结构和显示面板。
 背景技术
次毫米发光二极管（mini-LED）极大的降低了液晶面板中背光光源的尺寸，可以让背光单元的尺寸小于100微米，将背光光源薄膜化、微小化、阵列化使用mini-LED的液晶面板能够实现每个图元单独定址，单独驱动发光。
 技术问题
由于传统的微透镜结构尺寸过大，无法应用在Mini-LED背光结构中，而利用注塑成型方案实现的微透镜阵列通常面积较小。因此，急需一种适用于Mini-LED的微透镜结构，以进一步提高Mini-LED的光扩散效果，从而减小Mini-LED的数量以减小成本。
 技术解决方案
本申请提供了一种背光结构和显示面板，所述背光结构具有适用于Mini-LED的微透镜阵列。
为解决上述问题，本申请提供了一种背光结构，所述背光结构包括：
背光光源；
微透镜阵列，所述微透镜阵列位于所述背光光源上方；
其中，所述微透镜阵列包括支撑板，所述支撑板包括靠近所述背光光源的第一表面和远离所述背光光源的第二表面，所述第一表面具有多个入光结构，所述第二表面具有多个与所述多个入光结构对应的出光结构，所述多个入光结构和与所述多个入光结构对应的多个出光结构构成多个微透镜结构；
其中，所述多个入光结构通过第一模具在所述第一表面上压滚成型，所述多个出光结构通过第二模具在所述第二表面上压滚成型；
其中，所述多个微透镜结构沿第一方向呈条状排列。
根据本申请的其中一个方面，所述背光光源包括多个设置在灯板上的次毫米发光二极管，所述多个次毫米发光二极管与所述多个微透镜结构一一对应。
根据本申请的其中一个方面，每一个所述入光结构包括第一突起结构；其中，
所述第一突起结构具有第一表面，所述第一表面与所述灯板的表面贴合；
所述第一突起结构还包括第一凹陷部，所述第一凹陷部位于所述第一表面的几何中心处，与所述次毫米发光二极管相对应，所述第一凹陷部的表面构成所述微透镜结构的入光面。
根据本申请的其中一个方面，所述第一凹陷部为半球形结构，与所述入光结构对应的次毫米发光二极管位于所述半球形结构的球心处。
根据本申请的其中一个方面，每一个所述出光结构包括第二突起结构；其中，
所述第二突起结构具有第二凹陷部，所述第二凹陷部位于所述第二突起结构的几何中心处，所述第二突起结构的几何中心和所述第一突起结构的几何中心重合；
所述第二突起结构还包括第二环形部，所述第二环形部环绕所述第二凹陷部，所述第二环形部的表面为连接所述第二凹陷部的边界和所述支撑板的表面的平滑曲面。
根据本申请的其中一个方面，形成所述支撑板、所述第一突起结构和所述第二突起结构的材料为透光材料，所述透光材料具有热塑性。
根据本申请的其中一个方面，所述第二凹陷部的表面为反光材料构成的镜面结构，构成所述微透镜结构的反射面；所述第二环形部的表面构成所述微透镜结构的出光面。
根据本申请的其中一个方面，所述第一凹陷部和所述第二凹陷部的几何中心重合，所述第一凹陷部在所述支撑板上的投影为圆形，所述第二凹陷部在所述支撑板上的投影为圆形，所述第一凹陷部在所述支撑板上的投影覆盖所述第二凹陷部在所述支撑板上的投影。
根据本申请的其中一个方面，所述微透镜阵列还包括多个支撑柱，所述多个支撑柱设置在所述支撑板的第二表面上，每一个支撑柱位于两个相邻的微透镜结构之间。
为解决上述问题，本申请提供了一种背光结构，所述背光结构包括：
背光光源；
微透镜阵列，所述微透镜阵列位于所述背光光源上方；
其中，所述微透镜阵列包括支撑板，所述支撑板包括靠近所述背光光源的第一表面和远离所述背光光源的第二表面，所述第一表面具有多个入光结构，所述第二表面具有多个与所述多个入光结构对应的出光结构，所述多个入光结构和与所述多个入光结构对应的多个出光结构构成多个微透镜结构；
其中，所述多个入光结构通过第一模具在所述第一表面上压滚成型，所述多个出光结构通过第二模具在所述第二表面上压滚成型。
根据本申请的其中一个方面，所述背光光源包括多个设置在灯板上的次毫米发光二极管，所述多个次毫米发光二极管与所述多个微透镜结构一一对应。
根据本申请的其中一个方面，每一个所述入光结构包括第一突起结构；其中，
所述第一突起结构具有第一表面，所述第一表面与所述灯板的表面贴合；
所述第一突起结构还包括第一凹陷部，所述第一凹陷部位于所述第一表面的几何中心处，与所述次毫米发光二极管相对应，所述第一凹陷部的表面构成所述微透镜结构的入光面。
根据本申请的其中一个方面，所述第一凹陷部为半球形结构，与所述入光结构对应的次毫米发光二极管位于所述半球形结构的球心处。
根据本申请的其中一个方面，每一个所述出光结构包括第二突起结构；其中，
所述第二突起结构具有第二凹陷部，所述第二凹陷部位于所述第二突起结构的几何中心处，所述第二突起结构的几何中心和所述第一突起结构的几何中心重合；
所述第二突起结构还包括第二环形部，所述第二环形部环绕所述第二凹陷部，所述第二环形部的表面为连接所述第二凹陷部的边界和所述支撑板的表面的平滑曲面。
根据本申请的其中一个方面，形成所述支撑板、所述第一突起结构和所述第二突起结构的材料为透光材料，所述透光材料具有热塑性。
根据本申请的其中一个方面，所述第二凹陷部的表面为反光材料构成的镜面结构，构成所述微透镜结构的反射面；所述第二环形部的表面构成所述微透镜结构的出光面。
根据本申请的其中一个方面，所述第一凹陷部和所述第二凹陷部的几何中心重合，所述第一凹陷部在所述支撑板上的投影为圆形，所述第二凹陷部在所述支撑板上的投影为圆形，所述第一凹陷部在所述支撑板上的投影覆盖所述第二凹陷部在所述支撑板上的投影。
根据本申请的其中一个方面，所述微透镜阵列还包括多个支撑柱，所述多个支撑柱设置在所述支撑板的第二表面上，每一个支撑柱位于两个相邻的微透镜结构之间。
根据本申请的其中一个方面，所述多个支撑柱具有相同的高度，所述多个支撑柱表面具有漫反射结构。
根据本申请的其中一个方面，所述多个微透镜结构沿第一方向呈条状排列。
相应的，本申请还提供了一种显示面板，所述显示面板包括背光结构，所述背光结构包括：
背光光源；
微透镜阵列，所述微透镜阵列位于所述背光光源上方；
其中，所述微透镜阵列包括支撑板，所述支撑板包括靠近所述背光光源的第一表面和远离所述背光光源的第二表面，所述第一表面具有多个入光结构，所述第二表面具有多个与所述多个入光结构对应的出光结构，所述多个入光结构和与所述多个入光结构对应的多个出光结构构成多个微透镜结构；
其中，所述多个入光结构通过第一模具在所述第一表面上压滚成型，所述多个出光结构通过第二模具在所述第二表面上压滚成型。
 有益效果
本申请提供了一种背光结构，所述背光结构具有支撑板，所述支撑板的第一表面具有多个入光结构，所述支撑板的第二表面具有多个与所述多个入光结构对应的出光结构，所述多个入光结构和与多个出光结构构成多个微透镜结构。本申请中，所述多个入光结构和多个出光结构采用不同的模具压滚成型。本申请提供的微透镜阵列通过压滚成型的方法制作，能够形成大面积的适用于Mini-LED的微透镜阵列，解决了现有技术中微透镜阵列无法适用于Mini-LED的技术问题。
 附图说明
图1为本申请的一个具体实施例中的微透镜阵列的结构示意图；
图2为图1中微透镜阵列中的一个微透镜的结构示意图；
图3为本申请的一个具体实施例中的背光结构的结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
本申请提供了一种背光结构和显示面板，所述背光结构具有适用于Mini-LED的微透镜阵列。参见图1、图2和图3，图1为本申请的一个具体实施例中的微透镜阵列的结构示意图，图2为图1中微透镜阵列中的一个微透镜的结构示意图，图3为本申请的一个具体实施例中的背光结构的结构示意图。
参见图3，所述背光结构包括背光光源和微透镜阵列，所述微透镜阵列位于所述背光光源上方。所述微透镜阵列包括支撑板100，所述支撑板100包括靠近所述背光光源的第一表面和远离所述背光光源的第二表面，所述第一表面具有多个入光结构220，所述第二表面具有多个与所述多个入光结构220对应的出光结构210，所述多个入光结构220和与所述多个入光结构220对应的多个出光结构210构成多个微透镜结构。
本实施例中，所述多个入光结构220通过第一模具在所述第一表面上压滚成型，所述多个出光结构210通过第二模具在所述第二表面上压滚成型。
所述背光光源包括多个设置在灯板500上的次毫米发光二极管400。优选的，所述背光光源包括多个灯板500，所述灯板500为条状灯板，所述多个次毫米发光二极管400沿第一方向呈条状排列。所述多个灯板500沿第二方向排列，所述第二方向与所述第一方向垂直。所述多个次毫米发光二极管400与所述多个微透镜结构一一对应。
参见图2，本申请中，每一个所述入光结构220包括第一突起结构。所述第一突起结构具有第一表面222，所述第一表面222与所述灯板400的表面贴合。所述第一突起结构还包括第一凹陷部221，所述第一凹陷部221位于所述第一表面222的几何中心处，与所述次毫米发光二极管相对应，所述第一凹陷部221的表面构成所述微透镜结构的入光面。
本申请中，所述第一凹陷部221为半球形结构，与所述入光结构220对应的次毫米发光二极管位于所述半球形结构的球心处。
本申请中，每一个所述出光结构210包括第二突起结构。所述第二突起结构具有第二凹陷部211，所述第二凹陷部211位于所述第二突起结构的几何中心处，所述第二突起结构的几何中心A和所述第一突起结构的几何中心A’重合。
本实施例中，所述第二突起结构还包括第二环形部212，所述第二环形部212环绕所述第二凹陷部211，所述第二环形部212的表面为连接所述第二凹陷部211的边界和所述支撑板100的表面的平滑曲面。
本申请中，形成所述支撑板100、所述第一突起结构和所述第二突起结构的材料为透光材料，所述透光材料具有热塑性。由于次毫米发光二极管的尺寸很小，现有技术中的透镜阵列的生产方法无法生产出毫米级的微透镜。本申请中采用具有热塑性的透光材料，通过模具在所述透光材料表面压印形成微透镜阵列。这种方法能够形成具有各种形状和尺寸的微透镜阵列，满足次毫米发光二极管对透镜尺寸的要求。同时，这种方法工艺简单，成本低廉，便于批量生产，能够极大的提高使用次毫米发光二极管的背光结构的混光效果。
本申请中，所述第二凹陷部211的表面为反光材料构成的镜面结构，构成所述微透镜结构的反射面。所述第二环形部212的表面构成所述微透镜结构的出光面。所述第一凹陷部221和所述第二凹陷部211的几何中心重合，所述第一凹陷部221在所述支撑板100上的投影为圆形，所述第二凹陷部211在所述支撑板100上的投影为圆形，所述第一凹陷部221在所述支撑板100上的投影覆盖所述第二凹陷部211在所述支撑板100上的投影。
本申请中，所述微透镜阵列还包括多个支撑柱300，所述多个支撑柱300设置在所述支撑板100的第二表面上，每一个支撑柱300位于两个相邻的微透镜结构之间。
本实施例中，所述支撑柱300的高度相同，一方面用于分散其他光学膜片施加到所述微透镜阵列上的压力，避免所述微透镜阵列因为受力不均产生裂纹。另一方面也能够保证所述微透镜阵列和其他光学膜片之间的距离保持恒定。优选的，为了避免所述支撑柱300在显示面板上形成光斑或阴影，形成所述多个支撑柱300的材料为白色材料或透明材料，所述多个支撑柱300表面具有漫反射结构。
相应的，本申请还提供了一种显示面板，所述显示面板包括如前所述的背光结构。
本申请提供了一种背光结构，所述背光结构具有支撑板，所述支撑板的第一表面具有多个入光结构，所述支撑板的第二表面具有多个与所述多个入光结构对应的出光结构，所述多个入光结构和与多个出光结构构成多个微透镜结构。本申请中，所述多个入光结构和多个出光结构采用不同的模具压滚成型。本申请提供的微透镜阵列通过压滚成型的方法制作，能够形成大面积的适用于Mini-LED的微透镜阵列，解决了现有技术中微透镜阵列无法适用于Mini-LED的技术问题。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种背光结构，其中，所述背光结构包括：
    背光光源；
    微透镜阵列，所述微透镜阵列位于所述背光光源上方；
    其中，所述微透镜阵列包括支撑板，所述支撑板包括靠近所述背光光源的第一表面和远离所述背光光源的第二表面，所述第一表面具有多个入光结构，所述第二表面具有多个与所述多个入光结构对应的出光结构，所述多个入光结构和与所述多个入光结构对应的多个出光结构构成多个微透镜结构；
    其中，所述多个入光结构通过第一模具在所述第一表面上压滚成型，所述多个出光结构通过第二模具在所述第二表面上压滚成型；
    其中，所述多个微透镜结构沿第一方向呈条状排列。
  2. 根据权利要求1所述的背光结构，其中，所述背光光源包括多个设置在灯板上的次毫米发光二极管，所述多个次毫米发光二极管与所述多个微透镜结构一一对应。
  3. 根据权利要求2所述的背光结构，其中，每一个所述入光结构包括第一突起结构；其中，
    所述第一突起结构具有第一表面，所述第一表面与所述灯板的表面贴合；
    所述第一突起结构还包括第一凹陷部，所述第一凹陷部位于所述第一表面的几何中心处，与所述次毫米发光二极管相对应，所述第一凹陷部的表面构成所述微透镜结构的入光面。
  4. 根据权利要求3所述的背光结构，其中，所述第一凹陷部为半球形结构，与所述入光结构对应的次毫米发光二极管位于所述半球形结构的球心处。
  5. 根据权利要求3所述的背光结构，其中，每一个所述出光结构包括第二突起结构；其中，
    所述第二突起结构具有第二凹陷部，所述第二凹陷部位于所述第二突起结构的几何中心处，所述第二突起结构的几何中心和所述第一突起结构的几何中心重合；
    所述第二突起结构还包括第二环形部，所述第二环形部环绕所述第二凹陷部，所述第二环形部的表面为连接所述第二凹陷部的边界和所述支撑板的表面的平滑曲面。
  6. 根据权利要求5所述的背光结构，其中，形成所述支撑板、所述第一突起结构和所述第二突起结构的材料为透光材料，所述透光材料具有热塑性。
  7. 根据权利要求6所述的背光结构，其中，所述第二凹陷部的表面为反光材料构成的镜面结构，构成所述微透镜结构的反射面；所述第二环形部的表面构成所述微透镜结构的出光面。
  8. 根据权利要求5所述的背光结构，其中，所述第一凹陷部和所述第二凹陷部的几何中心重合，所述第一凹陷部在所述支撑板上的投影为圆形，所述第二凹陷部在所述支撑板上的投影为圆形，所述第一凹陷部在所述支撑板上的投影覆盖所述第二凹陷部在所述支撑板上的投影。
  9. 根据权利要求1所述的背光结构，其中，所述微透镜阵列还包括多个支撑柱，所述多个支撑柱设置在所述支撑板的第二表面上，每一个支撑柱位于两个相邻的微透镜结构之间。
  10. 根据权利要求9所述的背光结构，其中，所述多个支撑柱具有相同的高度，所述多个支撑柱表面具有漫反射结构。
  11. 一种背光结构，其中，所述背光结构包括：
    背光光源；
    微透镜阵列，所述微透镜阵列位于所述背光光源上方；
    其中，所述微透镜阵列包括支撑板，所述支撑板包括靠近所述背光光源的第一表面和远离所述背光光源的第二表面，所述第一表面具有多个入光结构，所述第二表面具有多个与所述多个入光结构对应的出光结构，所述多个入光结构和与所述多个入光结构对应的多个出光结构构成多个微透镜结构；
    其中，所述多个入光结构通过第一模具在所述第一表面上压滚成型，所述多个出光结构通过第二模具在所述第二表面上压滚成型。
  12. 根据权利要求11所述的背光结构，其中，所述背光光源包括多个设置在灯板上的次毫米发光二极管，所述多个次毫米发光二极管与所述多个微透镜结构一一对应。
  13. 根据权利要求12所述的背光结构，其中，每一个所述入光结构包括第一突起结构；其中，
    所述第一突起结构具有第一表面，所述第一表面与所述灯板的表面贴合；
    所述第一突起结构还包括第一凹陷部，所述第一凹陷部位于所述第一表面的几何中心处，与所述次毫米发光二极管相对应，所述第一凹陷部的表面构成所述微透镜结构的入光面。
  14. 根据权利要求13所述的背光结构，其中，所述第一凹陷部为半球形结构，与所述入光结构对应的次毫米发光二极管位于所述半球形结构的球心处。
  15. 根据权利要求13所述的背光结构，其中，每一个所述出光结构包括第二突起结构；其中，
    所述第二突起结构具有第二凹陷部，所述第二凹陷部位于所述第二突起结构的几何中心处，所述第二突起结构的几何中心和所述第一突起结构的几何中心重合；
    所述第二突起结构还包括第二环形部，所述第二环形部环绕所述第二凹陷部，所述第二环形部的表面为连接所述第二凹陷部的边界和所述支撑板的表面的平滑曲面。
  16. 根据权利要求15所述的背光结构，其中，形成所述支撑板、所述第一突起结构和所述第二突起结构的材料为透光材料，所述透光材料具有热塑性。
  17. 根据权利要求16所述的背光结构，其中，所述第二凹陷部的表面为反光材料构成的镜面结构，构成所述微透镜结构的反射面；所述第二环形部的表面构成所述微透镜结构的出光面。
  18. 根据权利要求15所述的背光结构，其中，所述第一凹陷部和所述第二凹陷部的几何中心重合，所述第一凹陷部在所述支撑板上的投影为圆形，所述第二凹陷部在所述支撑板上的投影为圆形，所述第一凹陷部在所述支撑板上的投影覆盖所述第二凹陷部在所述支撑板上的投影。
  19. 根据权利要求11所述的背光结构，其中，所述微透镜阵列还包括多个支撑柱，所述多个支撑柱设置在所述支撑板的第二表面上，每一个支撑柱位于两个相邻的微透镜结构之间。
  20. 一种显示面板，其中，所述显示面板包括背光结构，所述背光结构包括：
    背光光源；
    微透镜阵列，所述微透镜阵列位于所述背光光源上方；
    其中，所述微透镜阵列包括支撑板，所述支撑板包括靠近所述背光光源的第一表面和远离所述背光光源的第二表面，所述第一表面具有多个入光结构，所述第二表面具有多个与所述多个入光结构对应的出光结构，所述多个入光结构和与所述多个入光结构对应的多个出光结构构成多个微透镜结构；
    其中，所述多个入光结构通过第一模具在所述第一表面上压滚成型，所述多个出光结构通过第二模具在所述第二表面上压滚成型。
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