WO2014012318A1 - 扩散板、背光模组及显示装置 - Google Patents

扩散板、背光模组及显示装置 Download PDF

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Publication number
WO2014012318A1
WO2014012318A1 PCT/CN2012/085686 CN2012085686W WO2014012318A1 WO 2014012318 A1 WO2014012318 A1 WO 2014012318A1 CN 2012085686 W CN2012085686 W CN 2012085686W WO 2014012318 A1 WO2014012318 A1 WO 2014012318A1
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WO
WIPO (PCT)
Prior art keywords
base layer
concave surface
diffusion plate
backlight module
light source
Prior art date
Application number
PCT/CN2012/085686
Other languages
English (en)
French (fr)
Inventor
张明辉
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US13/996,083 priority Critical patent/US9939562B2/en
Priority to EP12868329.9A priority patent/EP2876469B1/en
Publication of WO2014012318A1 publication Critical patent/WO2014012318A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0226—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures having particles on the surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • 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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
    • 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

Definitions

  • the invention relates to a diffusion plate, a backlight module and a display device. Background technique
  • the direct backlight module is a backlight mode widely used in display devices, and the diffusion plate included is the entire direct backlight module. Key components.
  • FIG. 1 is a schematic structural diagram of a diffusion plate included in a backlight module in the prior art.
  • the diffusion plate included in the direct type backlight module of the prior art mainly includes a substrate having a plate shape.
  • the substrate 02 is provided with a diffusion film 01 facing one side of the light source of the direct type backlight module (ie, the light incident surface of the diffusion plate), and the opposite side (ie, the light emitting surface of the diffusion plate) is provided with a scattering particle film layer.
  • a diffusion film 01 facing one side of the light source of the direct type backlight module (ie, the light incident surface of the diffusion plate), and the opposite side (ie, the light emitting surface of the diffusion plate) is provided with a scattering particle film layer.
  • the diffuser plate of the direct type backlight module does not distinguish the position of the illuminant of the light source from the position of the non-illuminator, but only scatters the light incident by the light source to the same extent; and in the direct type backlight module, the light source
  • the arrangement of the illuminants has a certain gap, and the brightness of the illuminant in the light source is brighter than other positions, and the scattering is insufficient when the light passes through the diffusion film 01 of the diffusion plate and the scattering particle layer 03, resulting in the position of the illuminator.
  • the phenomenon of higher brightness than other positions which in turn causes uneven brightness or light film (Lamp Mura), which affects the display quality of the product. Summary of the invention
  • the invention provides a diffusing plate for a backlight module to improve the uniformity of astigmatism of the backlight module.
  • the present invention also provides a backlight module including the above diffusion plate, and a display device including the above backlight module.
  • the backlight module can be a direct type backlight module or an edge type backlight module.
  • An aspect of the invention provides a diffusing plate comprising: a base body, an upper surface of the base body including at least one first concave surface, a lower surface of the base body including at least one second concave surface; and a first base layer disposed on the base body a first scattering particle film layer disposed on the first substrate layer a second base layer disposed on the lower surface of the base body; and a second scattering particle film layer disposed on the lower surface of the second base layer.
  • first concave surface and the second concave surface are plural, the first concave surface of the upper surface of the base body is spaced apart, and the second concave surface of the lower surface of the base body is spaced apart.
  • first concave surface and the second concave surface are disposed correspondingly.
  • a light diffusing agent is disposed in the substrate.
  • the refractive index of the substrate is greater than the refractive index of the first substrate and/or the second substrate.
  • the substrate has a refractive index of 1.59 1.60
  • the first substrate has a refractive index of 1.48 to 1.55
  • the second substrate has a refractive index of 1.48 1.55.
  • the refractive index of the first base layer is the same as the refractive index of the second base layer.
  • the material of the substrate comprises a polystyrene transparent material or a polycarbonate transparent material.
  • the first base layer and the second base layer are both polydecyl methacrylate.
  • Another aspect of the present invention provides a backlight module including any of the above-described diffusion plates.
  • the backlight module further includes a light source having at least one illuminator, wherein the light source is placed under the diffuser.
  • a second scattering particle film layer in the diffusing plate faces the light source, and a second concave surface of the diffusing plate is disposed corresponding to the illuminant of the light source.
  • Yet another aspect of the present invention provides a display device including any of the above backlight modules.
  • FIG. 1 is a schematic structural view of a diffusion plate included in a backlight module in the prior art
  • FIG. 2 is a schematic structural view of a diffusion plate provided by the present invention.
  • FIG. 3 is a schematic diagram of the astigmatism principle of the diffuser plate provided by the present invention.
  • 01 diffusion film; 02, 4, substrate; 03, scattering particle film; 1 , illuminant; 2, second scattering particle film layer; 3, second substrate; 41, second concave surface; 42, first concave surface; 5, a first base layer; 6, a first scattering particle film layer.
  • the diffusing plate for the direct type backlight module provided in the first aspect of the present invention includes a base body, the upper surface of the base body is recessed downwardly to form at least one first concave surface, and the first base layer is attached to the upper surface of the base body, a first scattering particle film layer is disposed on the upper surface of the first base layer; a lower surface of the base body is recessed upwardly to form at least one second concave surface, a second base layer is attached to the lower surface of the base body, and a second base layer is attached to the lower surface of the second base layer Two scattering particle film layers.
  • the term "applying" in the present invention does not mean that the film layers are simply pasted together by means of tape or the like, only to describe that the respective film layers are in contact with each other.
  • the upper surface of the base body is recessed to form at least one first concave surface, and the first base layer is attached to the upper surface of the base body, so that the first base layer is correspondingly provided with the protrusions in contact with the first concave surface.
  • the lower surface of the diffusing plate is designated as a light incident surface.
  • the diffusing plate diffuses the light of the light source, the light emitted by the light source sequentially passes through the second scattering particle film layer and the second base layer.
  • the diffusing plate has a first scattering particle film layer and a second scattering particle film layer two-layer scattering structure in addition to the diffusion plate mentioned in the above background art.
  • the second concave surface of the substrate and the first concave surface diffuse light emitted from the light source, thereby improving the uniformity of scattering of the light of the light source after passing through the diffusion plate.
  • the diffusing plate provided by the invention can improve the uniformity of astigmatism of the direct type backlight module.
  • the first concave surface and the first concave surface are provided in the diffusion plate provided by the technical solution.
  • the plurality of concave surfaces are plural, and the first concave surface of the upper surface of the base body is spaced apart, and the base
  • the second concave surface of the lower surface of the body is spaced apart, and the first concave surface and the second concave surface are disposed correspondingly.
  • the first concave surface and the second concave surface correspond to each other, and each pair of the first concave surface and the second concave surface are opposed to each other, and a concave lens structure can be formed on the base body, thereby improving the diffusion performance of the first concave surface and the second concave surface.
  • the "spaced arrangement" in the present invention means that a portion of the upper surface of the spacer substrate is formed between the first concave surfaces formed on the upper surface of the substrate, and the second concave surface is also the same.
  • a light diffusing agent may be disposed in the substrate.
  • the technical solution is based on the first technical solution or the second technical solution, in order to increase the diffusion performance of the first concave surface and the second concave surface when the light passes, for example, the refractive index of the substrate is greater than The refractive index of a base layer and a second base layer.
  • the technical solution defines a refractive index range of the base body and the first base layer and the second base layer on the basis of the fourth aspect, for example, the refractive index of the base body is 1.59 1.60, first The refractive index of the base layer is 1.48 1.55, and the refractive index of the second base layer is 1.48 ⁇ 1.55.
  • the refractive index of the first base layer is the same as the refractive index of the second base layer.
  • the material of the substrate is mainly a polystyrene transparent material or a polycarbonate transparent material.
  • the above-mentioned substrate can also be made of other transparent materials, such as glass, as long as the light transmittance of the substrate is ensured.
  • the first base layer and the second base layer each have a refractive index of 1.49.
  • the present invention provides a direct-lit backlight module, including a light source, the light source having at least one illuminant, and the direct-lit backlight module further includes any one of technical solutions 1 to 8
  • the diffusing plate provided by the item, the light source is placed under the diffusing plate, the second scattering particle film layer in the diffusing plate faces the light source, and the second concave surface in the diffusing plate is disposed in one-to-one correspondence with the illuminating body of the light source.
  • the second concave surface corresponds to the illuminant in the light source, that is, each second concave faces one illuminating
  • the light emitted by the body diffuses, increasing the uniformity of the scattering.
  • the present disclosure provides a display device, which includes the direct type backlight module provided in the above-mentioned technical solution 9.
  • the diffusing plate provided by the present invention can be used in a direct type backlight module, and includes a base body 4.
  • the upper surface of the base body 4 is recessed downwardly to form at least one first concave surface 42.
  • the upper surface of the base body 4 is attached.
  • a first base layer 5, a first scattering particle film layer 6 is attached to the upper surface of the first base layer 5;
  • a lower surface of the base body 4 is recessed upwardly to form at least one second concave surface 41, and a second base layer is attached to the lower surface of the base body 4 3, a second scattering particle film layer 2 is attached to the lower surface of the second base layer 3.
  • the lower surface of the diffusing plate is designated as a light incident surface, and when the diffusing plate diffuses the light of the light source, the light emitted by the light source sequentially passes through the second scattering particle.
  • the first concave surface 42 and the first scattering particle film layer 6 both diffuse light emitted from the light source, and therefore, the diffusion plate provided by the present invention has the first scattering particle in comparison with the diffusion plate mentioned in the above background art.
  • the second concave surface 41 and the first concave surface 42 of the substrate 4 diffuse light emitted from the light source, thereby improving the light of the light source through the diffusion plate. The uniformity of the scattering afterwards.
  • the diffusing plate provided by the invention can improve the uniformity of astigmatism of the direct type backlight module.
  • the diffusion plate provided by the present invention can also be applied to an edge type backlight module.
  • the first concave surface 41 and the second concave surface 42 mentioned in the above technical solutions may have various corresponding manners.
  • the first concave surface 42 may be one and opposite to all the illuminants 1 in the light source, and the second concave surface 41 is plural, and corresponds to the illuminant 1 in the light source (not shown in this structural diagram) ).
  • the first concave surface 42 and the second concave surface 41 are plural, and the first concave surface 42 of the upper surface of the base 4 is spaced apart, and the base 4 is provided.
  • the second concave surfaces 41 of the lower surface are spaced apart, and the second concave surface 41 corresponds to the first concave surface 42.
  • each pair of the first concave surface 42 and the second concave surface 41 are opposite to each other, and a concave lens structure can be formed on the base body 4, thereby improving the diffusion performance of the first concave surface and the second concave surface.
  • the refractive index of the substrate 4 is greater than the refractive indices of the first base layer 5 and the second base layer 3.
  • the refractive index of the substrate 4 is 1.59-1.60
  • the refractive indices of the first base layer 5 and the second base layer 3 are 1.48 1.55. Since the refractive index is in the range of 1.59-1.60 and the range of 1.48 ⁇ 1.55, there are many transparent materials, which is convenient for the specific production.
  • the refractive index of the first base layer 5 is the same as the refractive index of the second base layer 3, for example, the first The material of the base layer 5 and the material of the second base layer 3 are the same.
  • the material of the substrate 4 is mainly a polystyrene transparent material having a refractive index of 1.59 to 1.60, that is, a PS material, and a corresponding light diffusing agent may be added to the PS material to increase the structure of the IHJ lens formed by the substrate 4. Diffuse;
  • the material of the substrate 4 may also be a polycarbonate transparent material having a refractive index of 1.59 to 1.60, that is, a PC material, and a corresponding light diffusing agent may be added to the PS material to increase the diffusibility of the IHJ lens structure formed by the substrate 4. .
  • the material of the substrate 4 can also be other transparent materials, such as glass, as long as the light transmittance can be ensured.
  • the first base layer 3 and the second base layer 5 comprise polydecyl methacrylate, that is, PMMA material, and the PMMA material has high transparency, light weight, easy molding, dimensional stability, deformation resistance, and good light guiding property and optical rotation.
  • the refractive index can be about 1.49.
  • the present invention also provides a backlight module including the above diffusion plate.
  • the backlight module may be a direct type backlight module, including a light source, the light source has at least one illuminator 1 , and the direct type backlight module further includes any one of the above diffusion plates, and the light source is placed under the diffusion plate in the diffusion plate.
  • the second scattering particle film layer 2 faces the light source, and the second concave surface 41 in the diffusion plate is disposed corresponding to the illuminant 1 of the light source.
  • the second concave surface 41 corresponds to the illuminant 1 in the light source, that is, each of the second concave surfaces 41 diffuses light emitted from one illuminator 1, increasing the uniformity of scattering.
  • the first concave surface 42 and the second concave surface 41 are plural, and the first concave surface 42 of the upper surface of the base body 4 is spaced apart, and the second concave surface 41 of the lower surface of the base body 4 is spaced apart, and the second The concave surface 41 corresponds to the first concave surface 42.
  • the first concave surface 42 and the second concave surface 41 are in one-to-one correspondence, and each pair of the first concave surface 42 and the second concave surface 41 are opposite to each other, and a concave lens structure can be formed on the base body 4, thereby improving the diffusion performance of the first concave surface and the second concave surface.
  • the illuminants 1 in the light source are also plural, and each of the concave lens structures in the base body is disposed in one-to-one correspondence with the illuminants in the light source, which can further improve the uniformity of scattering of the light emitted by the light source through the diffusion plate.
  • the backlight module can also be an edge type backlight module.
  • the invention also provides a display device comprising the above backlight module.
  • the display device has a high display quality. The principle is not repeated here.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

一种扩散板，包括：基体（4），基体（4）的上表面包括至少一个第一凹面（42），基体（4）的下表面包括至少一个第二凹面（41）；第一基层（5），设置在基体（4）的上表面上；第一散射粒子膜层（6），设置在第一基层（5）的上表面上；第二基层（3），设置在基体（4）的下表面上；第二散射粒子膜层（2），设置在第二基层（3）的下表面上。

Description

扩散板、 背光模组及显示装置 技术领域
本发明涉及扩散板、 背光模组及显示装置。 背景技术
平板显示技术中， 背光模组发光的均匀性影响着整个显示装置的显示效 果， 直下式背光模组作为显示装置中广泛应用的一种背光模式， 其包括的扩 散板是整个直下式背光模组的关键部件。
如图 1所示， 图 1为现有技术中背光模组包括的扩散板的结构示意图。 现有技术中的直下式背光模组中包括的扩散板主要包括具有板状的基体
02, 所述基体 02朝向直下式背光模组的光源的一面（即扩散板的入光面 )设 有扩散膜 01 , 相对的另一面（即扩散板的出光面）设置有一层散射粒子膜层 03。
光源发出的光经过扩散膜 01和散射粒子膜层 03进行扩散。现有技术中， 直下式背光模组的扩散板并没有区分光源的发光体位置和非发光体位置， 只 是对光源射入的光线进行同一程度的散射； 而直下式背光模组中， 光源中发 光体的布置具有一定的间隙， 而光源中发光体所在位置的亮度要比其他位置 亮， 在光透过扩散板的扩散膜 01以及散射粒子膜层 03时散射不充分， 造成 发光体所在位置比其他位置亮度高的现象， 进而造成亮度不均或光斑（Lamp Mura )现象， 影响产品的显示质量。 发明内容
本发明提供了一种用于背光模组的扩散板， 以提高背光模组散光的均匀 性。 本发明的还提供了一种包括上述扩散板的背光模组， 以及包括上述背光 模组的显示装置。 背光模组可以是直下式背光模组或边缘型背光模组。
本发明的一方面提供一种扩散板， 包括： 基体， 所述基体的上表面包括 至少一个第一凹面， 所述基体的下表面包括至少一个第二凹面； 第一基层， 设置在所述基体的上表面上； 第一散射粒子膜层， 设置在所述第一基层上表 面上； 第二基层， 设置在所述基体的下表面上； 第二散射粒子膜层， 设置在 所述第二基层下表面上。
例如， 所述第一凹面和第二凹面均有复数个， 所述基体的上表面的第一 凹面间隔设置， 所述基体下表面的第二凹面间隔设置。
例如， 所述第一凹面与第二凹面——对应设置。
例如， 所述基体中设置有光扩散剂。
例如， 所述基体的折射率大于第一基层和 /或第二基层的折射率。
例如， 所述基体的折射率为 1.59 1.60 , 所述第一基层的折射率为 1.48-1.55 , 所述第二基层的折射率为 1.48 1.55。
例如， 所述第一基层的折射率与第二基层的折射率相同。
例如， 所述基体的材料包括聚苯乙烯透明材料或聚碳酸酯透明材料。 例如， 所述第一基层和第二基层均为聚曱基丙烯酸曱酯。
本发明的另一方面提供一种背光模组， 包括上述的任一种扩散板。
例如， 背光模组还包括光源， 所述光源具有至少一个发光体， 其中所述 光源放置于所述扩散板下方。
例如， 所述扩散板中的第二散射粒子膜层朝向所述光源， 且所述扩散板 中的第二凹面与所述光源的发光体——对应设置。
本发明的又一方面提供一种显示装置， 包括上述任一种背光模组。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为现有技术中背光模组包括的扩散板的结构示意图；
图 2为本发明提供的扩散板的结构示意图；
图 3为本发明提供的扩散板的散光原理示意图。
图中主要元件符号说明：
01 , 扩散膜； 02、 4, 基体； 03 , 散射粒子膜层； 1 , 发光体； 2, 第二散 射粒子膜层； 3 , 第二基层； 41 , 第二凹面； 42, 第一凹面； 5, 第一基层； 6, 第一散射粒子膜层。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图，对本发明实施例的技术方案进行清楚、 完整地描述。显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
需要说明的是：
本发明中的 "上表面" 、 "下表面" 、 "向上" 、 "向下" 等术语只是 为了对扩散板的结构做出清楚的描述， 并不用做限制用语。
本发明的技术方案一中提供的用于直下式背光模组的扩散板，包括基体， 基体的上表面向下凹设形成至少一个第一凹面， 基体的上表面上贴设有第一 基层、 第一基层上表面贴设有第一散射粒子膜层； 基体的下表面向上凹设形 成至少一个第二凹面， 基体的下表面上贴设有第二基层， 第二基层下表面贴 设有第二散射粒子膜层。
本发明中的 "贴设" 一词并不代表只是利用胶带等方式将膜层粘贴在一 起， 只是为了描述各个膜层之间是相互接触的。 举例说明， 基体的上表面向 下凹设形成至少一个第一凹面， 基体的上表面上贴设有第一基层， 因此第一 基层相应的设置有凸起与第一凹面接触。
为便于对上述扩散板进行描述，指定上述扩散板的下表面为入光面，则， 在扩散板对光源的光进行扩散时，光源发出的光依次通过第二散射粒子膜层、 第二基层、基体、 第一基层和第一散射粒子膜层， 其中， 第二散射粒子膜层、 基体下表面具有的第二凹面， 基体上表面具有的第一凹面、 第一散射粒子膜 层均对光源发出的光进行扩散， 因此，与上述背景技术中提到的扩散板相比， 本发明提供的扩散板除了具有第一散射粒子膜层、 第二散射粒子膜层两层散 射结构外， 还具有由基体具有的第二凹面和第一凹面对光源发出的光进行扩 散， 提高了光源的光线经过上述扩散板之后散射的均匀性。
所以， 本发明提供的扩散板可以提高直下式背光模组散光的均匀性。 作为本发明的技术方案二， 在技术方案一的基础上， 为进一步提高第一 凹面和第二凹面对光扩散的均匀性， 本技术方案提供的扩散板中， 所述第一 凹面和第二凹面为复数个， 所述基体的上表面的第一凹面间隔设置， 所述基 体下表面的第二凹面间隔设置， 所述第一凹面与第二凹面——对应设置。 第 一凹面和第二凹面——对应， 则每一对第一凹面和第二凹面相对， 可以在基 体上形成一个凹透镜结构， 从而提高第一凹面和第二凹面的扩散性能。
本发明中的 "间隔设置" 是指在基体的上表面上形成的第一凹面之间间 隔基体的部分上表面设置， 第二凹面亦同。
作为本发明的技术方案三， 本技术方案在上述技术方案一， 或技术方案 二的基础上， 为了增加基体上凹透镜结构的散射性能， 可以在基体中设置有 光扩散剂。
作为本发明的技术方案四， 本技术方案在上述技术方案一， 或技术方案 二的基础上， 为了增加第一凹面和第二凹面在光通过时的扩散性能， 例如， 基体的折射率大于第一基层和第二基层的折射率。
作为本发明的技术方案五， 本技术方案在技术方案四的基础上对上述基 体以及第一基层、 第二基层的折射率范围进行了限定， 例如， 上述基体的折 射率为 1.59 1.60 , 第一基层的折射率为 1.48 1.55 , 第二基层的折射率为 1.48~1.55。
作为本发明的技术方案六， 在技术方案五的基础上， 本技术方案提供的 扩散板中， 第一基层的折射率与第二基层的折射率相同。
作为本发明的技术方案七， 在技术方案六的基础上， 本技术方案提供的 扩散板中，基体的材料主要为聚苯乙烯透明材料或聚碳酸酯透明材料。 当然， 上述基体还可以为其它透明材料制作， 如玻璃等， 只要保证基体的透光性即 可。
作为本发明的技术方案八， 在技术方案六的基础上， 为便于第一基层和 第二基层的制作， 本技术方案提供的扩散板中， 第一基层和第二基层均为折 射率为 1.49的聚曱基丙烯酸曱酯。
作为本发明的技术方案九， 本技术方案提供了一种直下式背光模组， 包 括光源， 光源具有至少一个发光体， 且该直下式背光模组还包括如技术方案 一至技术方案八中任一项提供的扩散板， 光源放置于扩散板下方， 扩散板中 的第二散射粒子膜层朝向光源， 且扩散板中的第二凹面与光源的发光体一一 对应设置。
第二凹面与光源中的发光体——对应， 即， 每一个第二凹面对一个发光 体发出的光线进行扩散， 增加了散射的均匀性。
作为本发明的技术方案十， 本技术方案提供了一种显示装置， 该显示装 置包括上述技术方案九中提供的直下式背光模组。
上述列举了本发明提供的各技术方案， 相应的技术方案之间可以进行组 合， 以形成本发明的相应的实施方式。 在具体实施方式中， 上述复数个技术 方案中还存在其他替代方案。 下面通过一些具体实施例进行描述， 以便于本 领域技术人员对本发明技术方案的理解。
如图 2所示， 本发明提供的扩散板可用于直下式背光模组， 包括基体 4, 基体 4的上表面向下凹设形成至少一个第一凹面 42,基体 4的上表面上贴设 有第一基层 5,第一基层 5上表面贴设有第一散射粒子膜层 6;基体 4的下表 面向上凹设形成至少一个第二凹面 41 ,基体 4的下表面上贴设有第二基层 3 , 第二基层 3下表面贴设有第二散射粒子膜层 2。
如图 3所示， 为便于对上述扩散板进行描述， 指定上述扩散板的下表面 为入光面， 则， 在扩散板对光源的光进行扩散时， 光源发出的光依次通过第 二散射粒子膜层 2、 第二基层 3、基体 4、第一基层 5和第一散射粒子膜层 6 , 其中， 第二散射粒子膜层 2、 基体 4下表面具有的第二凹面 41、 基体 4上表 面具有的第一凹面 42、 第一散射粒子膜层 6均对光源发出的光进行扩散， 因 此， 与上述背景技术中提到的扩散板相比， 本发明提供的扩散板除了具有第 一散射粒子膜层 6、 第二散射粒子膜层 2两层散射结构外， 还具有由基体 4 具有的第二凹面 41和第一凹面 42对光源发出的光进行扩散， 提高了光源的 光线经过上述扩散板之后散射的均匀性。
所以， 本发明提供的扩散板可以提高直下式背光模组散光的均匀性。 另外， 易于理解， 本发明提供的扩散板也可以应用于边缘型背光模组。 示例实施方式中， 上述技术方案中提到的第一凹面 41和第二凹面 42可 以有多种对应方式。
方式一， 第一凹面 42可以为一个，且与光源中的所有发光体 1相对， 而 第二凹面 41为复数个，且与光源中的发光体 1——对应（此结构图中未示出）。
方式二， 为了更好地对光源中发光体 1处的光进行扩散， 例如， 第一凹 面 42和第二凹面 41为复数个， 且基体 4的上表面的第一凹面 42间隔设置， 基体 4下表面的第二凹面 41间隔设置，第二凹面 41与第一凹面 42——对应。 第一凹面 42和第二凹面 41——对应， 则每一对第一凹面 42和第二凹面 41 相对， 可以在基体 4上形成一个凹透镜结构， 从而提高第一凹面和第二凹面 的扩散性能。
示例实施方式中， 进一步地， 为了增加第一凹面 42和第二凹面 41在光 通过时的扩散性能,基体 4的折射率大于第一基层 5和第二基层 3的折射率。
更例如， 为便于寻求满足生产需求的材料， 例如， 基体 4 的折射率为 1.59-1.60, 第一基层 5和第二基层 3的折射率为 1.48 1.55。 由于折射率在 1.59-1.60范围内以及 1.48~1.55范围内的透明材料较多， 便于具体生产时的 选择。
为了提高基体 4的凹透镜结构与第一基层 5以及第二基层 3形成的散射 结构对光线散射的均匀性，第一基层 5的折射率与第二基层 3的折射率相同， 例如， 上述第一基层 5的制作材料和第二基层 3的制作材料相同。
具体的， 上述基体 4的制作材料主要为折射率为 1.59~1.60的聚苯乙烯 透明材料， 即 PS材料， 可以在 PS材料中添加相应的光扩散剂， 以增加基体 4形成的 IHJ透镜结构的扩散性；
上述基体 4的制作材料还可以为折射率为 1.59~1.60的聚碳酸酯透明材 料， 即 PC材料， 可以在 PS材料中添加相应的光扩散剂， 以增加基体 4形成 的 IHJ透镜结构的扩散性。
当然， 基体 4的制作材料还可以为其它透明材料， 如玻璃等， 只要能够 保证其透光性即可。
例如， 第一基层 3和第二基层 5包括聚曱基丙烯酸曱酯， 即 PMMA材 料， PMMA材料的透明度高， 质轻， 容易成型， 尺寸稳定， 不易变形， 且具 有良好的导光性和旋光性， 其折射率可以为大约 1.49。
另外， 本发明还提供了一种背光模组， 包括上述扩散板。
例如， 背光模组可以为直下式背光模组， 包括光源， 光源具有至少一个 发光体 1 , 且该直下式背光模组还包括上述任何一种扩散板， 光源放置于扩 散板下方， 扩散板中的第二散射粒子膜层 2朝向光源， 且扩散板中的第二凹 面 41与光源的发光体 1——对应设置。
第二凹面 41与光源中的发光体 1——对应， 即， 每一个第二凹面 41对 一个发光体 1发出的光线进行扩散， 增加了散射的均匀性。 其中， 有一种示例的实施例， 第一凹面 42和第二凹面 41为复数个， 且 基体 4的上表面的第一凹面 42间隔设置， 基体 4下表面的第二凹面 41间隔 设置， 第二凹面 41与第一凹面 42——对应。 第一凹面 42和第二凹面 41一 一对应， 则每一对第一凹面 42和第二凹面 41相对， 可以在基体 4上形成一 个凹透镜结构， 从而提高第一凹面和第二凹面的扩散性能。 相应的， 光源中 的发光体 1也为复数个， 基体中的每一个凹透镜结构都与光源中的发光体一 一对应设置， 可以进一步提高光源发出光经过扩散板后散射的均匀性。
例如， 背光模组也可以是边缘型背光模组。
本发明还提供了一种显示装置， 包括上述的背光模组。 该显示装置的显 示质量较高。 其原理这里不再一一赘述。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。

Claims

权利要求书
1、 一种扩散板， 包括：
基体， 所述基体的上表面包括至少一个第一凹面， 所述基体的下表面包 括至少一个第二凹面；
第一基层， 设置在所述基体的上表面上；
第一散射粒子膜层， 设置在所述第一基层上表面上；
第二基层， 设置在所述基体的下表面上；
第二散射粒子膜层， 设置在所述第二基层下表面上。
2、根据权利要求 1所述的扩散板， 其中， 所述第一凹面和第二凹面均有 复数个， 所述基体的上表面的第一凹面间隔设置， 所述基体下表面的第二凹 面间隔设置。
3、根据权利要求 1或 2所述的扩散板，所述第一凹面与第二凹面——对 应设置。
4、 根据权利要求 1-3任一项所述的扩散板， 其中， 所述基体中设置有光 扩散剂。
5、 根据权利要求 1-4任一项所述的扩散板， 其中， 所述基体的折射率大 于第一基层和 /或第二基层的折射率。
6、 根据权利要求 1-5任一项所述的扩散板， 其中， 所述基体的折射率为 1.59-1.60 , 所述第一基层的折射率为 1.48~1.55 , 所述第二基层的折射率为 1.48 1.55。
7、 根据权利要求 1-6任一项所述的扩散板 ， 其中， 所述第一基层的折射 率与第二基层的折射率相同。
8、 根据权利要求 1-7任一项所述的扩散板， 其中， 所述基体的材料包括 聚苯乙烯透明材料或聚碳酸酯透明材料。
9、 根据权利要求 1-8任一项所述的扩散板， 其中， 所述第一基层和第二 基层均为聚曱基丙烯酸曱酯。
10、 一种背光模组， 包括如权利要求 1-9任一项所述的扩散板。
11、根据权利要求 10所述的背光模组，还包括光源， 所述光源具有至少 一个发光体， 其中所述光源放置于所述扩散板下方。
12、 根据权利要求 10或 11所述的背光模组， 其中所述扩散板中的第二 散射粒子膜层朝向所述光源， 且所述扩散板中的第二凹面与所述光源的发光 体——对应设置。
13、 一种显示装置， 包括如权利要求 10-12任一项所述的背光模组。
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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102798908B (zh) * 2012-07-19 2014-09-10 京东方科技集团股份有限公司 一种扩散板、直下式背光模组及显示装置
CN104483728A (zh) * 2014-11-21 2015-04-01 常州市诺金精密机械有限公司 多功能多层扩散板
EP3286585A4 (en) * 2015-04-24 2019-03-20 3M Innovative Properties Company DIFFUSER AT SEVERAL LEVELS
CN105334555A (zh) * 2015-11-06 2016-02-17 广东长虹电子有限公司 一种新型高雾高辉度扩散板
CN108008475A (zh) * 2017-12-08 2018-05-08 惠州市华星光电技术有限公司 扩散板与直下式背光模组
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CN108488691A (zh) * 2018-03-20 2018-09-04 青岛海信电器股份有限公司 一种复合扩散板、背光模组和显示装置
TWI679474B (zh) * 2018-10-23 2019-12-11 友達光電股份有限公司 防漏光膜總成及應用該防漏光膜總成的顯示器
CN111505751B (zh) * 2020-06-16 2021-10-29 常州华威新材料有限公司 一种提升辉度及遮瑕雾化性能的拱状扩散膜及其制备方法
CN115236778A (zh) * 2021-04-23 2022-10-25 合肥京东方显示技术有限公司 散射膜、显示模组和显示装置
CN115128716B (zh) * 2022-05-25 2024-01-02 广东瑞捷新材料股份有限公司 一种新型发泡扩散板结构

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1963566A (zh) * 2006-11-23 2007-05-16 友达光电股份有限公司 背光结构的扩散板及应用其的显示装置
JP2007148415A (ja) * 1997-09-25 2007-06-14 Dainippon Printing Co Ltd 光拡散フィルム、その製造方法、拡散層付偏光板及び液晶表示装置
CN101021579A (zh) * 2007-03-13 2007-08-22 友达光电股份有限公司 光源扩散板及背光模块
CN101122703A (zh) * 2006-08-11 2008-02-13 鸿富锦精密工业（深圳）有限公司 光学板及采用该光学板的背光模组
CN101625482A (zh) * 2008-07-10 2010-01-13 鸿富锦精密工业（深圳）有限公司 背光模组及其光学板
CN102183804A (zh) * 2011-03-11 2011-09-14 北京化工大学 多层变组合式的扩散板
CN102436019A (zh) * 2011-10-29 2012-05-02 合肥乐凯科技产业有限公司 一种光学上扩散膜及使用该光学上扩散膜的液晶显示背光源
CN102798908A (zh) * 2012-07-19 2012-11-28 京东方科技集团股份有限公司 一种扩散板、直下式背光模组及显示装置

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5054872B2 (ja) * 2001-02-22 2012-10-24 恵和株式会社 光拡散シート及びこれを用いたバックライトユニット
US7072115B2 (en) * 2002-03-26 2006-07-04 Keiwa Inc. Light diffusion sheet and backlight unit using the same
KR100962650B1 (ko) * 2003-03-05 2010-06-11 삼성전자주식회사 광학시트 및 이를 사용하는 액정표시장치
US7391571B2 (en) * 2005-07-15 2008-06-24 Chi Lin Technology Co., Ltd. Diffusion plate used in direct-type backlight module
JP5102951B2 (ja) * 2005-10-14 2012-12-19 株式会社ジロオコーポレートプラン 光拡散シート及びこれを用いたバックライトユニット
US7924368B2 (en) * 2005-12-08 2011-04-12 3M Innovative Properties Company Diffuse multilayer optical assembly
KR100885608B1 (ko) * 2006-05-30 2009-02-24 주식회사 엘지화학 다층구조 광확산판 및 그를 포함하는 액정 디스플레이 장치
CN101122704B (zh) * 2006-08-11 2010-11-10 鸿富锦精密工业（深圳）有限公司 光学板及采用该光学板的背光模组
CN101126822B (zh) * 2006-08-18 2010-09-29 鸿富锦精密工业（深圳）有限公司 光学板及采用该光学板的背光模组
CN101126821B (zh) * 2006-08-18 2011-06-08 鸿富锦精密工业（深圳）有限公司 光学板及采用该光学板的背光模组
CN101191847A (zh) * 2006-12-01 2008-06-04 鸿富锦精密工业（深圳）有限公司 光学板
CN101393280A (zh) * 2007-09-17 2009-03-25 鸿富锦精密工业（深圳）有限公司 背光模组及其棱镜片
JP5280106B2 (ja) * 2007-12-07 2013-09-04 デクセリアルズ株式会社 光源装置および表示装置
KR101501932B1 (ko) * 2007-12-31 2015-03-12 삼성디스플레이 주식회사 광학판, 이의 제조 방법 및 액정 표시 장치
US20090279175A1 (en) 2008-05-07 2009-11-12 Rohm And Haas Denmark Finance A/S Optical diffuser film with linear domains of varying diffusion
US8177377B2 (en) * 2008-07-10 2012-05-15 Hon Hai Precision Industry Co., Ltd. Optical plate and backlight module using the same
EP2470949B1 (en) 2009-08-27 2015-11-04 LG Electronics Inc. Backlight unit and dipslay device
TWI408405B (zh) * 2009-10-27 2013-09-11 Eternal Chemical Co Ltd 光學膜複合物
US8917447B2 (en) 2010-01-13 2014-12-23 3M Innovative Properties Company Microreplicated film for attachment to autostereoscopic display components
TW201317513A (zh) * 2011-10-25 2013-05-01 Hon Hai Prec Ind Co Ltd 平面照明裝置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007148415A (ja) * 1997-09-25 2007-06-14 Dainippon Printing Co Ltd 光拡散フィルム、その製造方法、拡散層付偏光板及び液晶表示装置
CN101122703A (zh) * 2006-08-11 2008-02-13 鸿富锦精密工业（深圳）有限公司 光学板及采用该光学板的背光模组
CN1963566A (zh) * 2006-11-23 2007-05-16 友达光电股份有限公司 背光结构的扩散板及应用其的显示装置
CN101021579A (zh) * 2007-03-13 2007-08-22 友达光电股份有限公司 光源扩散板及背光模块
CN101625482A (zh) * 2008-07-10 2010-01-13 鸿富锦精密工业（深圳）有限公司 背光模组及其光学板
CN102183804A (zh) * 2011-03-11 2011-09-14 北京化工大学 多层变组合式的扩散板
CN102436019A (zh) * 2011-10-29 2012-05-02 合肥乐凯科技产业有限公司 一种光学上扩散膜及使用该光学上扩散膜的液晶显示背光源
CN102798908A (zh) * 2012-07-19 2012-11-28 京东方科技集团股份有限公司 一种扩散板、直下式背光模组及显示装置

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