WO2018228376A1 - 面光源组件、背光模块及液晶显示器 - Google Patents

面光源组件、背光模块及液晶显示器 Download PDF

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Publication number
WO2018228376A1
WO2018228376A1 PCT/CN2018/090827 CN2018090827W WO2018228376A1 WO 2018228376 A1 WO2018228376 A1 WO 2018228376A1 CN 2018090827 W CN2018090827 W CN 2018090827W WO 2018228376 A1 WO2018228376 A1 WO 2018228376A1
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WIPO (PCT)
Prior art keywords
light
plate
light source
disposed
incident side
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Ceased
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PCT/CN2018/090827
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English (en)
French (fr)
Inventor
于洋
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JRD Communication Shenzhen Ltd
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JRD Communication Shenzhen Ltd
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Publication of WO2018228376A1 publication Critical patent/WO2018228376A1/zh
Priority to US16/699,754 priority Critical patent/US11137537B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • 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
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of flexible or folded printed circuits
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10106—Light emitting diode [LED]

Definitions

  • the invention belongs to the technical field of liquid crystal display, and in particular to a surface light source component, a backlight module and a liquid crystal display.
  • LCDs liquid crystal displays
  • the liquid crystal display usually includes a liquid crystal panel and a backlight module (Black Light Module, BL for short). Since the liquid crystal panel itself does not have self-illuminating characteristics, the backlight module must be disposed under the liquid crystal panel to provide a surface light source required for the liquid crystal panel, so that the liquid crystal panel can display images by the surface light source provided by the backlight module.
  • BL Black Light Module
  • the thickness of the backlight module has become increasingly thinner.
  • the thickness of the light guide plate it is common practice to match the thickness of the light guide plate according to the thickness of the light source (such as an LED lamp), and to supplement the thickness or gap of other film materials (such as optical film, etc.).
  • the consequence of this is that on the one hand, the space for thinning the thickness of the entire backlight module is limited, and on the other hand, the reduction of other film gaps leads to an increase in reliability risk.
  • a surface light source assembly includes: a light guide plate including a flat plate portion and a receiving portion, the flat plate portion including a light incident side surface and a light exit top surface, the receiving portion and the light entering portion
  • the light source is disposed in the receiving portion and has a light emitting surface facing the light incident side of the flat portion; wherein the flat portion has a thickness smaller than a thickness of the light source.
  • the receiving portion includes a curved plate, a horizontal plate and a vertical plate, one end of the curved plate is smoothly engaged with the light-incident side, and the other end of the curved plate is connected to one end of the horizontal plate.
  • the other end of the horizontal plate is connected to one end of the vertical plate, the other end of the vertical plate is flush with the light emitting top surface, and the normal direction of the horizontal plate is parallel to the normal of the light emitting top surface In the direction, the normal direction of the vertical plate is parallel to the normal direction of the light incident side.
  • the light source comprises: an LED lamp and a flexible circuit board, the LED lamp comprising the light emitting surface, a fixing surface opposite to the light emitting surface, and a connection connecting the light emitting surface and the fixing surface
  • the connecting surface is disposed on the flexible circuit board, the flexible circuit board is disposed on an inner surface of the horizontal board, and the fixing surface is fixed on an inner surface of the vertical board, the light emitting The face faces the light entrance side.
  • a reflective layer is disposed on the inner surface of the curved plate and/or the horizontal plate and/or the vertical plate. In this way, the utilization of the light emitted from the light source can be improved.
  • the light guide plate further includes a reflecting portion disposed on the light emitting top surface and the other end of the vertical plate to separate the light emitting top surface and the vertical plate The opening between one end is closed. In this way, the light that is emitted to the opening can be reflected back, thereby further improving the utilization of the light emitted by the light source.
  • a backlight module includes: the surface light source assembly described above; a back frame including a bottom plate and a side plate extending from the bottom plate, the surface light source assembly being disposed on the Above the bottom plate, and the light-emitting top surface faces away from the bottom plate; a plurality of optical films are sequentially disposed on the light-emitting top surface.
  • the backlight module further includes a reflective sheet disposed between the bottom plate and a bottom surface of the light guide plate, and a bottom surface of the light guide plate is opposite to and parallel to the light exit top surface, The light incident side is connected between the bottom surface and the light exit top surface.
  • the reflective sheet can reflect the light emitted from the bottom surface back into the light guide plate, thereby improving the utilization of light.
  • a plurality of mesh points are disposed on the bottom surface. In this way, it is possible to destroy the light to form a total reflection inside the light guide plate, thereby achieving uniform light.
  • the inner surface of the side plate extends inward to form a carrying plate parallel to the bottom plate, and the carrying plate is disposed on the plurality of optical films and is used to carry the liquid crystal panel.
  • a liquid crystal display includes: the backlight module described above; and a liquid crystal panel carried on the carrying plate.
  • the thickness of the flat portion of the light guide plate can be arbitrarily adjusted, thereby improving the backlight module.
  • the space is reduced in thickness without reducing the gap between other films.
  • FIG. 1 is a schematic structural view of a surface light source assembly according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural view of a backlight module according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a liquid crystal display according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural view of a surface light source assembly according to an embodiment of the present invention.
  • a surface light source assembly 10 includes a light guide plate 100 and a light source 200.
  • the light guide plate 100 includes a flat plate portion 110 and a receiving portion 120.
  • the accommodating portion 120 is located on one side of the flat plate portion 110, and the accommodating portion 120 and the flat plate portion 110 are integrally formed, but the present invention is not limited thereto.
  • the flat plate portion 110 includes a light-emitting top surface 111 and a bottom surface 112 that are opposite to each other and parallel to each other, and a light-incident side surface 113 (shown by a broken line in the figure) that is connected to the same side of the light-emitting top surface 111 and the bottom surface 112.
  • the accommodating portion 120 is smoothly connected to the light incident side surface 113 , and the light source 200 is housed in the accommodating portion 120 and the light emitting surface 211 of the light source 200 faces the light incident side surface 113 .
  • the light emitted from the light source 200 can enter the light guide plate 100 via the light incident side surface 113, be reflected by the light inside the light guide plate 100, and then exit through the light exit top surface 111 to form a uniform surface light.
  • the combination structure of the light guide plate 100 and the light source 200 is adopted, and the light emitted from the light exit top surface 111 can be arbitrarily adjusted if the predetermined light amount, the predetermined light brightness, and the predetermined light uniformity are satisfied.
  • the thickness of the flat portion 110 is made smaller than the thickness of the light source 200.
  • the accommodating portion 120 includes a curved plate 121, a horizontal plate 122, and a vertical plate 123.
  • One end of the curved plate 121 is smoothly engaged with the light incident side surface 113, the other end of the curved plate 121 is connected to one end of the horizontal plate 122, and the other end of the horizontal plate 122 is connected to one end of the vertical plate 123, and the other end of the vertical plate 123 is The light-emitting top surface 111 is flush.
  • the curved plate 121, the horizontal plate 122 and the vertical plate 123 are enclosed to form a receiving cavity 124 having an opening between the other end of the vertical plate 123 and the light exiting top surface 111.
  • the curved plate 121 is curved in a direction away from the receiving cavity 124, or the curved plate 121 is curved outwardly.
  • the normal direction of the horizontal plate 122 is parallel to the normal direction of the light exit top surface 111, that is, the horizontal plate 122 is parallel to the light exit top surface 111 and the bottom surface 112.
  • the normal direction of the vertical plate 123 is parallel to the normal direction of the light incident side surface 113, that is, the vertical plate 123 and the light incident side surface 113 are parallel to each other.
  • the specific configuration of the accommodating portion 120 is merely an example of the accommodating portion of the present invention, and the configuration of the accommodating portion of the present invention is not limited thereto.
  • the light source 200 includes an LED lamp 210 and a flexible circuit board 220.
  • the LED lamp 210 includes a light-emitting surface 211, a fixed surface 212 opposite to the light-emitting surface 211, and a connection surface 213 that is connected to both the light-emitting surface 211 and the fixed surface 212.
  • the connection surface 213 is disposed on the flexible circuit board 220 to electrically connect the LED lamp 210 to the flexible circuit board 220.
  • the flexible circuit board 220 is disposed on the inner surface of the horizontal plate 122, the fixing surface 212 is fixed on the inner surface of the vertical plate 123, and the light emitting surface 211 faces the light incident side 113.
  • the thickness of the light source 200 is the sum of the thickness of the LED lamp 210 and the thickness of the flexible circuit board 220. It should also be noted that the specific structure of the light source 200 is merely an example of the light source of the present invention, and the structure of the light source of the present invention is not limited thereto.
  • a reflective layer may be disposed on the inner surfaces of the curved plate 121 and/or the horizontal plate 122 and/or the vertical plate 123.
  • the provided light reflecting layer can reflect the light illuminating the curved plate 121 and/or the horizontal plate 122 and/or the vertical plate 123 back, so that as much light as possible is incident on the light incident side 113.
  • the light reflecting layer is provided only on the inner surface of the remaining portion of the curved plate 121 excluding the portion joined to the light incident side surface 113.
  • the light guide plate 100 further includes The reflecting portion 130.
  • the reflecting portion 130 is disposed between the other end of the vertical plate 123 and the light-emitting top surface 111 to close the opening between the other end of the vertical plate 123 and the light-emitting top surface 111 (ie, the opening of the receiving cavity 124).
  • the light that is emitted to the reflecting portion 130 can be reflected by the reflecting portion 130 into the recovery cavity 124, thereby improving the utilization of light.
  • FIG. 2 is a schematic structural view of a backlight module according to an embodiment of the present invention.
  • a backlight module 1 includes a surface light source assembly 10, a back frame 20, and a plurality of optical films 30.
  • the back frame 20 includes a bottom plate 201 and side plates 202 extending from the bottom plate, wherein the side plates 202 are substantially perpendicular to the bottom plate 201.
  • the surface light source assembly 10 is disposed above the bottom plate 201, and the light-emitting top surface 111 of the surface light source assembly 10 faces away from the bottom plate 201.
  • a plurality of optical films 30 are sequentially disposed on the light-emitting top surface 111.
  • the plurality of optical films 30 may include a lower diffusion sheet, a lower addition sheet, and an upper addition sheet, but the invention is not limited thereto. These optical films 30 can improve the optical characteristics of the light emitted from the light top surface 111. In the present embodiment, the thickness of the optical film 30 and the gap between each other need not be adjusted.
  • a plurality of dots may be disposed on the bottom surface 112.
  • the backlight module 1 in order to improve the utilization of light, further includes a reflection sheet 40.
  • the reflection sheet 40 is disposed between the bottom surface 112 and the bottom plate 201 such that the reflection sheet 40 can reflect the light emitted from the bottom surface 112 back into the light guide plate 100, thereby improving the utilization of light.
  • FIG. 3 is a schematic structural view of a liquid crystal display according to an embodiment of the present invention.
  • a liquid crystal display includes a backlight module 1 and a liquid crystal panel 2.
  • the inner surface of the side plate 202 extends inwardly to form a carrying plate 221 parallel to the bottom plate 201.
  • the carrying plate 221 is disposed on the plurality of optical films 30, and the liquid crystal panel 2 is carried on the carrying plate 221 .
  • the light emitted from the light-emitting top surface 111 is supplied to the liquid crystal panel 2 after the optical characteristics are improved by the plurality of optical films 30.
  • the thickness of the flat portion of the light guide plate can be arbitrarily adjusted, thereby enabling Improve the thickness of the backlight module to reduce the thickness, while not reducing the gap between other membranes.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

本发明公开一种面光源组件，其包括：导光板，包括平板部和收容部，所述平板部包括入光侧面和出光顶面，所述收容部与所述入光侧面平滑衔接；光源，设置于所述收容部内且其发光面面向所述平板部的入光侧面；其中，所述平板部的厚度小于所述光源的厚度。本发明还公开一种具有该面光源组件的背光模块和液晶显示器。本发明在背光模块出射的光线满足预定的光量、预定的光亮度以及预定的光学特性等的情况下，可以任意调整导光板的平板部的厚度，从而能够提高背光模块的厚度减薄的空间，同时不会减少其他膜材的间隙。

Description

面光源组件、背光模块及液晶显示器 技术领域
本发明属于液晶显示技术领域，具体地讲，涉及一种面光源组件、背光模块及液晶显示器。
背景技术
随着光电与半导体技术的演进，也带动了平板显示器(Flat Panel Display)的蓬勃发展，而在诸多平板显示器中，液晶显示器(Liquid Crystal Display，简称LCD)因具有高空间利用效率、低消耗功率、无辐射以及低电磁干扰等诸多优越特性，已成为市场的主流。
液晶显示器通常包括液晶面板(Liquid Crystal Panel)与背光模块(Black Light Module，简称BL)。由于液晶面板本身并不具备自发光的特性，因此必须将背光模块配置在液晶面板下方，以提供液晶面板所需的面光源，如此液晶面板可借由背光模块提供的面光源而显示影像。
近年来，随着液晶显示器的厚度被要求越来越薄，相应的要求背光模块的厚度也越来越薄。为了实现背光模块的薄型化设计，通常的做法是按照光源(诸如LED灯)的厚度来匹配导光板的厚度，辅加缩减其他膜材(诸如光学膜片等)的厚度或者间隙。但是这样做的后果是一方面整个背光模块的厚度减薄的空间有限，另一方面是其他膜材间隙减少会导致可靠性风险的上升。
发明内容
为了解决上述现有技术存在的问题，本发明的目的在于提供一种能够提高背光模块的厚度减薄的空间的同时，不会减少其他膜材间隙的面光源组件、背光模块及液晶显示器。
根据本发明的一方面，提供了一种面光源组件，其包括：导光板，包括平板部和收容部，所述平板部包括入光侧面和出光顶面，所述收容部与所述入光侧面平滑衔接；光源，设置于所述收容部内且其发光面面向所述平板部的入光侧面；其中，所述平板部的厚度小于所述光源的厚度。
可选地，所述收容部包括弯曲板、水平板以及竖直板，所述弯曲板的一端与所述入光侧面平滑衔接，所述弯曲板的另一端与所述水平板的一端连接，所述水平板的另一端与所述竖直板的一端连接，所述竖直板的另一端与出光顶面平齐，所述水平板的法线方向平行于所述出光顶面的法线方向，所述竖直板的法线方向平行于所述入光侧面的法线方向。
可选地，所述光源包括：LED灯和柔性电路板，所述LED灯包括所述发光面、与所述发光面相对的固定面以及与所述发光面和所述固定面均连接的连接面，所述连接面设置于所述柔性电路板上，所述柔性电路板设置于所述水平板的内表面上，所述固定面固定在所述竖直板的内表面上，所述发光面面向所述入光侧面。
可选地，所述弯曲板和/或所述水平板和/或所述竖直板的内表面上设置有反光层。这样，可以提高光源出射的光线的利用率。
可选地，所述导光板还包括反射部，所述反射部设置于所述出光顶面和所述竖直板的另一端上，以将所述出光顶面和所述竖直板的另一端之间的开口封闭。这样，可以将出射至所述开口的光线反射回去，从而更进一步提高光源出射的光线的利用率。
根据本发明的另一方面，还提供了一种背光模块，其包括：上述的面光源组件；背框，包括底板以及由所述底板延伸形成的侧板，所述面光源组件设置于所述底板之上，且所述出光顶面背向所述底板；多张光学膜片，依次设置于所述出光顶面上。
可选地，所述背光模块还包括反射片，所述反射片设置于所述底板和所述导光板的底面之间，所述导光板的底面与所述出光顶面相对且平行，所述入光侧面连接在所述底面和所述出光顶面之间。这样该反射片可以将由底面出射的光线反射回导光板内，从而提高光线的利用率
可选地，所述底面上设置有若干网点。这样，可以破坏光线在导光板的内部形成全反射，从而实现均匀光线的目的。
可选地，所述侧板的内表面向内延伸形成与所述底板平行的承载平板，所述承载平板设置于所述多张光学膜片之上，并用于承载液晶面板。
根据本发明的又一方面，又提供了一种液晶显示器，其包括：上述的背光模块；液晶面板，承载于所述承载平板上。
本发明的有益效果：本发明在背光模块出射的光线满足预定的光量、预定的光亮度以及预定的光学特性等的情况下，可以任意调整导光板的平板部的厚度，从而能够提高背光模块的厚度减薄的空间，同时不会减少其他膜材的间隙。
附图说明
通过结合附图进行的以下描述，本发明的实施例的上述和其它方面、特点和优点将变得更加清楚，附图中：
图1是根据本发明的实施例的面光源组件的结构示意图；
图2是根据本发明的实施例的背光模块的结构示意图；
图3是根据本发明的实施例的液晶显示器的结构示意图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。
在附图中，相同的标号将始终被用于表示相同的元件。将理解的是，尽管在这里可使用术语“第一”、“第二”等来描述各种元件，但是这些元件不应受这些术语的限制。这些术语仅用于将一个元件与另一个元件区分开来。
图1是根据本发明的实施例的面光源组件的结构示意图。
参照图1，根据本发明的实施例的面光源组件10包括：导光板100和光源200。
具体而言，导光板100包括平板部110和收容部120。收容部120位于平板部110的一侧，并且收容部120和平板部110一体成型，但本发明并不限制于此。
平板部110包括彼此相对且平行的出光顶面111和底面112，以及连接在出光顶面111和底面112的同一侧的入光侧面113(图中以虚线表示)。收容部120与入光侧面113平滑衔接，光源200收容于收容部120内且光源200的发光面211面向入光侧面113。这样，光源200出射的光可以经由入光侧面113而进入 导光板100内，经过导光板100内部的光线反射等之后由出光顶面111出射出去，以形成均匀的面光线。
在本实施例中，采取这种导光板100和光源200的组合结构，在出光顶面111出射的光线满足预定的光量、预定的光亮度以及预定的光均匀性等的情况下，可以任意调整平板部110的厚度。这里，为了减薄背光模块的厚度，使平板部110的厚度小于光源200的厚度。
在本实施例中，收容部120包括弯曲板121、水平板122以及竖直板123。弯曲板121的一端与入光侧面113平滑衔接，弯曲板121的另一端与水平板122的一端连接，水平板122的另一端与竖直板123的一端连接，竖直板123的另一端与出光顶面111平齐。这样，弯曲板121、水平板122和竖直板123合围形成一具有开口的收容腔124，该开口位于竖直板123的另一端与出光顶面111之间。进一步地，弯曲板121沿着远离收容腔124的方向弯曲凸起，或者说弯曲板121向外弯曲凸起。
此外，水平板122的法线方向平行于出光顶面111的法线方向，也就是说，水平板122与出光顶面111和底面112平行。竖直板123的法线方向平行于入光侧面113的法线方向，也就是说竖直板123与入光侧面113彼此平行。
应当说明的是，上述收容部120的具体结构仅作为本发明的收容部的一实施示例，本发明的收容部的结构并不局限于此。
进一步地，在本实施例中，光源200包括：LED灯210和柔性电路板220。LED灯210包括发光面211、与发光面211相对的固定面212以及与发光面211和固定面212均连接的连接面213。连接面213设置于柔性电路板220上，以使LED灯210与柔性电路板220电连接。柔性电路板220设置于水平板122的内表面上，固定面212固定在竖直板123的内表面上，发光面211面向入光侧面113。这样，光源200的厚度为LED灯210的厚度和柔性电路板220的厚度之和。也需要说明的是，光源200的具体结构仅作为本发明的光源的一实施示例，本发明的光源的结构并不局限于此。
此外，为了提高LED灯210出射的光线的利用率，在本实施例中，可在弯曲板121和/或水平板122和/或竖直板123的内表面上设置反光层(未示出)。这样，设置的反光层可以将照射在弯曲板121和/或水平板122和/或竖直板123上的光线反射回去，从而使尽可能多的光线入射到入光侧面113上。需要说明的是，只在弯曲板121的除与入光侧面113衔接的部分之外的其余部分的内表 面上设置所述反光层。
另外，由于收容腔124具有开口，因此LED灯210出射的光线会经由该开口而出射出去，从而导致光线的浪费，所以为了更进一步提高LED灯210出射的光线的利用率，导光板100还包括反射部130。反射部130设置于竖直板123的另一端与出光顶面111之间，以将竖直板123的另一端与出光顶面111之间的开口(即收容腔124的开口)封闭。这样，出射至反射部130上的光线可以被反射部130反射回收容腔124内，从而提高光线的利用率。
图2是根据本发明的实施例的背光模块的结构示意图。
参照图2，根据本发明的实施例的背光模块1包括：面光源组件10、背框20以及多张光学膜片30。
背框20包括底板201以及由所述底板延伸形成的侧板202，其中侧板202与底板201大致垂直。面光源组件10设置于底板201之上，并且面光源组件10的出光顶面111背向底板201。
多张光学膜片30依次设置于出光顶面111上。多张光学膜片30可包括下扩散片、下增光片和上增光片，但本发明并不限制于此。这些光学膜片30可以改善出光顶面111出射的光线的光学特性。在本实施例中，所述光学膜片30的厚度和彼此之间的间隙无需调整。
进一步地，为了破坏光线在导光板100内部形成全反射，从而达到均匀光线的目的，在本实施例中，可在底面112上设置若干网点(未示出)。
另外，为了提高光线的利用率，根据本发明的实施例的背光模块1还包括：反射片40。该反射片40设置在底面112和底板201之间，这样该反射片40可以将由底面112出射的光线反射回导光板100内，从而提高光线的利用率。
图3是根据本发明的实施例的液晶显示器的结构示意图。
参照图3，根据本发明的实施例的液晶显示器包括背光模块1和液晶面板2。侧板202的内表面向内延伸形成与底板201平行的承载平板221，该承载平板221设置在多张光学膜片30之上，液晶面板2承载于该承载平板221上。这样，出光顶面111出射的光线经由多张光学膜片30改善光学特性之后提供给液晶面板2使用。
综上所述，根据本发明的实施例，在背光模块出射的光线满足预定的光量、 预定的光亮度以及预定的光学特性等的情况下，可以任意调整导光板的平板部的厚度，从而能够提高背光模块的厚度减薄的空间，同时不会减少其他膜材的间隙。
虽然已经参照特定实施例示出并描述了本发明，但是本领域的技术人员将理解：在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下，可在此进行形式和细节上的各种变化。

Claims (17)

  1. 一种面光源组件，其中，包括：
    导光板，包括平板部和收容部，所述平板部包括入光侧面和出光顶面，所述收容部与所述入光侧面平滑衔接；
    光源，设置于所述收容部内且其发光面面向所述平板部的入光侧面；
    其中，所述平板部的厚度小于所述光源的厚度；
    所述收容部包括弯曲板、水平板以及竖直板，所述弯曲板的一端与所述入光侧面平滑衔接，所述弯曲板的另一端与所述水平板的一端连接，所述水平板的另一端与所述竖直板的一端连接，所述竖直板的另一端与出光顶面平齐，所述水平板的法线方向平行于所述出光顶面的法线方向，所述竖直板的法线方向平行于所述入光侧面的法线方向；
    所述弯曲板上除与所述入光侧面衔接的部分之外的其余部分的内表面设置有反光层。
  2. 根据权利要求1所述的面光源组件，其中，所述光源包括：LED灯和柔性电路板，所述LED灯包括所述发光面、与所述发光面相对的固定面以及与所述发光面和所述固定面均连接的连接面，所述连接面设置于所述柔性电路板上，所述柔性电路板设置于所述水平板的内表面上，所述固定面固定在所述竖直板的内表面上，所述发光面面向所述入光侧面。
  3. 根据权利要求1所述的面光源组件，其中，所述水平板和/或所述竖直板的内表面上设置有反光层。
  4. 根据权利要求1所述的面光源组件，其中，所述导光板还包括反射部，所述反射部设置于所述出光顶面和所述竖直板的另一端上，以将所述出光顶面和所述竖直板的另一端之间的开口封闭。
  5. 根据权利要求2所述的面光源组件，其中，所述弯曲板和/或所述水平板和/或所述竖直板的内表面上设置有反光层。
  6. 根据权利要求2所述的面光源组件，其中，所述导光板还包括反射部，所述反射部设置于所述出光顶面和所述竖直板的另一端上，以将所述出光顶面和所述竖直板的另一端之间的开口封闭。
  7. 一种背光模块，其中，包括：
    面光源组件，所述面光源组件包括：
    导光板，包括平板部和收容部，所述平板部包括入光侧面和出光顶面，所述收容部与所述入光侧面平滑衔接；
    光源，设置于所述收容部内且其发光面面向所述平板部的入光侧面；
    其中，所述平板部的厚度小于所述光源的厚度；
    背框，包括底板以及由所述底板延伸形成的侧板，所述面光源组件设置于所述底板之上，且所述出光顶面背向所述底板；
    多张光学膜片，依次设置于所述出光顶面上。
  8. 根据权利要求7所述的背光模块，其中，所述背光模块还包括反射片，所述反射片设置于所述底板和所述导光板的底面之间，所述导光板的底面与所述出光顶面相对且平行，所述入光侧面连接在所述底面和所述出光顶面之间。
  9. 根据权利要求8所述的背光模块，其中，所述底面上设置有若干网点。
  10. 根据权利要求8所述的背光模块，其中，所述侧板的内表面向内延伸形成与所述底板平行的承载平板，所述承载平板设置于所述多张光学膜片之上，并用于承载液晶面板。
  11. 一种液晶显示器，其中，包括：
    背光模块，包括面光源组件、背框和多张光学膜片，所述面光源组件包括导光板和光源，所述导光板包括平板部和收容部，所述平板部包括入光侧面和出光顶面，所述收容部与所述入光侧面平滑衔接；所述光源设置于所述收容部内且其发光面面向所述平板部的入光侧面，所述平板部的厚度小于所述光源的厚度；所述背框包括底板以及由所述底板延伸形成的侧板，所述面光源组件设置于所述底板之上，且所述出光顶面背向所述底板；所述多张光学膜片依次设置于所述出光顶面上；所述侧板的内表面向内延伸形成与所述底板平行的承载平板，所述承载平板设置于所述多张光学膜片之上；
    液晶面板，承载于所述承载平板上。
  12. 根据权利要求11所述的液晶显示器，其中，所述收容部包括弯曲板、水平板以及竖直板，所述弯曲板的一端与所述入光侧面平滑衔接，所述弯曲板 的另一端与所述水平板的一端连接，所述水平板的另一端与所述竖直板的一端连接，所述竖直板的另一端与出光顶面平齐，所述水平板的法线方向平行于所述出光顶面的法线方向，所述竖直板的法线方向平行于所述入光侧面的法线方向。
  13. 根据权利要求12所述的液晶显示器，其中，所述光源包括：LED灯和柔性电路板，所述LED灯包括所述发光面、与所述发光面相对的固定面以及与所述发光面和所述固定面均连接的连接面，所述连接面设置于所述柔性电路板上，所述柔性电路板设置于所述水平板的内表面上，所述固定面固定在所述竖直板的内表面上，所述发光面面向所述入光侧面。
  14. 根据权利要求12所述的液晶显示器，其中，所述弯曲板和/或所述水平板和/或所述竖直板的内表面上设置有反光层。
  15. 根据权利要求12所述的液晶显示器，其中，所述导光板还包括反射部，所述反射部设置于所述出光顶面和所述竖直板的另一端上，以将所述出光顶面和所述竖直板的另一端之间的开口封闭。
  16. 根据权利要求13所述的液晶显示器，其中，所述背光模块还包括反射片，所述反射片设置于所述底板和所述导光板的底面之间，所述导光板的底面与所述出光顶面相对且平行，所述入光侧面连接在所述底面和所述出光顶面之间。
  17. 根据权利要求16所述的液晶显示器，其中，所述底面上设置有若干网点。
PCT/CN2018/090827 2017-06-12 2018-06-12 面光源组件、背光模块及液晶显示器 Ceased WO2018228376A1 (zh)

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