WO2017067101A1 - 背光模块及液晶显示器 - Google Patents

背光模块及液晶显示器 Download PDF

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Publication number
WO2017067101A1
WO2017067101A1 PCT/CN2016/070825 CN2016070825W WO2017067101A1 WO 2017067101 A1 WO2017067101 A1 WO 2017067101A1 CN 2016070825 W CN2016070825 W CN 2016070825W WO 2017067101 A1 WO2017067101 A1 WO 2017067101A1
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WIPO (PCT)
Prior art keywords
backlight module
light incident
light
straight portion
disposed
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/070825
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English (en)
French (fr)
Inventor
贺虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/913,826 priority Critical patent/US20170261678A1/en
Publication of WO2017067101A1 publication Critical patent/WO2017067101A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—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
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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
    • G02B6/0085—Means for removing heat created by the light source from 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
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets 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
    • 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
    • G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
    • G02F1/133385—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell with cooling means, e.g. fans
    • 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
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • 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 belongs to the technical field of liquid crystal display, and in particular to a backlight module and a liquid crystal display.
  • LCDs liquid crystal displays
  • liquid crystal display technology With the development of liquid crystal display technology, the market is increasingly pursuing the thinning of electronic devices. For example, today's notebook computers, mobile phones, tablet computers and other electronic devices that require liquid crystal displays are becoming thinner and thinner, so liquid crystal displays also need to be thinner. . How to provide a thin liquid crystal display is an urgent problem to be solved.
  • the present invention provides a backlight module including: a light guide plate including a light incident surface, a first surface, a second surface, a third surface, a light emitting surface, and a reflective surface; wherein the first surface Opposite the light incident surface, the second surface and the third surface are opposite to each other and are connected between the light incident surface and the first surface, and the light emitting surface and the reflective surface are opposite to each other And being connected to the light incident surface, the first surface, the second surface and the third surface; a light source disposed adjacent to the light incident surface; a reflective sheet comprising a flat portion and being flattened by the flat surface a first bent portion formed by bending the first side of the straight portion; wherein the straight portion is disposed under the reflective surface, and the first bent portion is attached to the first surface.
  • the reflective sheet further includes: a second bent portion formed by bending the second side of the straight portion; wherein the second bent portion is attached to the second surface.
  • the reflective sheet further includes: a third bend formed by bending the third side of the straight portion a folded portion; wherein the third bent portion is attached to the third surface.
  • first bent portion and the first surface and/or between the second bent portion and the second surface and/or the third bent portion and the first portion are bonded together by double-sided tape.
  • a plurality of dots are disposed on the reflective surface.
  • a plurality of double-sided tapes offset from the dot are disposed on the straight portion, and the straight portion is adhered to the reflective surface by the plurality of double-sided tapes.
  • the light guide plate is made of glass.
  • the light source is a light emitting diode.
  • the backlight module further includes: a heat dissipating member, comprising: a bearing portion and a mounting portion formed by bending the side of the carrying portion; wherein the straight portion is adjacent to one end of the light incident surface and the guide The light incident end of the light plate is carried on the carrying portion such that the mounting portion is adjacent to the light incident surface, and the light source is mounted on a surface of the mounting portion facing the light incident surface.
  • a heat dissipating member comprising: a bearing portion and a mounting portion formed by bending the side of the carrying portion; wherein the straight portion is adjacent to one end of the light incident surface and the guide The light incident end of the light plate is carried on the carrying portion such that the mounting portion is adjacent to the light incident surface, and the light source is mounted on a surface of the mounting portion facing the light incident surface.
  • the present invention also provides a liquid crystal display having the above backlight module.
  • the backlight module provided by the present invention reduces the thickness by not using the back sheet.
  • the thickness of the liquid crystal display can be greatly reduced, so that the liquid crystal display conforms to the requirements of the current thinning.
  • FIG. 1 is a side view and a plan view of a light guide plate according to an embodiment of the present invention
  • FIG. 2 is a top plan view of a reflective sheet in accordance with an embodiment of the present invention.
  • FIG. 3 is an assembled perspective view of a reflective sheet and a light guide plate according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a backlight module according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a liquid crystal display according to an embodiment of the present invention.
  • FIG. 1 is a side view and a plan view of a light guide plate in accordance with an embodiment of the present invention.
  • the left side is a top view and the right side is a side view.
  • the light guide plate 10 is a flat plate type light guide plate, but the present invention is not limited thereto.
  • the light guide plate 10 may also be a wedge-shaped light guide plate.
  • the light guide plate 10 includes six faces including four sides and a top surface and a bottom surface which are connected to and opposite to the four sides.
  • one of the four sides is designated as the light incident surface 11
  • the side opposite to the light incident surface 11 is the first surface 12
  • the two sides are connected between the light incident surface 11 and the first surface 12 and opposite to each other.
  • the side faces are the second face 13 and the third face 14, respectively
  • the top face is designated as the light exit face 15, and the bottom face is designated as the reflective face 16; of course, the definition herein is merely an example, and the invention is not limited thereto.
  • FIG. 2 is a top plan view of a reflective sheet in accordance with an embodiment of the present invention.
  • a reflection sheet 30 includes a straight portion 31 and a first bent portion 32, a second bent portion 33, and a third portion which are respectively bent by three sides of the straight portion 31.
  • the bent portion 34 Before the reflection sheet 30 and the light guide plate 10 are assembled, the double-faced tape 70 may be separately provided on the first bent portion 32, the second bent portion 33, and the third bent portion 34, respectively.
  • other adhesives such as glue may be used instead of the double-sided tape 70.
  • a plurality of double-sided tapes 70 may be disposed on the straight portion 31, The specific effects will be described below.
  • FIG 3 is an assembled perspective view of a reflective sheet and a light guide plate in accordance with an embodiment of the present invention.
  • the straight portion 31 is disposed under the reflecting surface 16, and the first bent portion 32, the second bent portion 33, and the third bent portion 34 are respectively associated with the first surface 12, the second surface 13, and The three sides 14 are bonded together by the double-sided tape 70.
  • the bonding fastness of the reflection sheet 30 and the light guide plate 10 can be increased.
  • only one bent portion of the reflective sheet 30 is combined with one side of the light guide plate 10, or two bent portions of the reflective sheet 30 are combined with the two sides of the light guide plate 10, and the same can be used.
  • the effect of fixing the reflection sheet 30 and the light guide plate 10 is achieved.
  • the first bent portion 32 is combined with the first face 12; in this case, the reflective sheet 30 may not include the second bent portion 33 and the third bent portion 34.
  • FIG. 4 is a schematic structural view of a backlight module according to an embodiment of the present invention.
  • a backlight module 1 includes a light guide plate 10 , a light source 20 , a reflective sheet 30 , a heat sink (or heat sink) 40 , a plastic frame 50 , and three optical films 60 .
  • the heat sink 40 has an "L" shape as a whole, and includes a carrying portion 41 and a mounting portion 42 which is formed by bending the side of the carrying portion 41.
  • the light source 20 may be a light emitting diode LED, but the invention is not limited thereto.
  • the light source 20 is disposed on a surface of the mounting portion 42 facing the light incident surface 11 such that the light source 20 is adjacent to the light incident surface 11 .
  • the three optical films 60 are sequentially disposed on the light-emitting surface 15 in a direction away from the light-emitting surface 15 to improve the light emitted from the light-emitting surface 15. It should be understood that the number of optical films 60 in the present invention is not limited to three, which may be set according to actual conditions.
  • the plastic frame 50 is disposed on the three optical films 60.
  • the frame 50 is fixedly coupled to the heat sink 40 to fix the three optical films 60 and the light guide plate 10, the light source 20, and the reflection sheet 30 between the frame 50 and the heat sink 40.
  • a plurality of mesh points 80 are disposed on the reflective surface 16; wherein the shape of the mesh dots 80 is not specifically limited in this embodiment.
  • the plurality of double-sided tapes 70 disposed on the flat portion 31 can be attached to the reflection surface 16, thereby further improving the reflection sheet 30 and the light guide plate. 10 combination firmness.
  • the double-sided tape 70 on the straight portion 31 is offset from the halftone dot 80.
  • the light guide plate 10 is made of transparent glass. Since the strength of the glass is much larger than the strength of a material such as PMMA or MS, the backlight module 1 according to an embodiment of the present invention may not include the back sheet and is supported only by the strength of the light guide plate 10. Thus, compared with the prior art, when the backlight module 1 does not include the backplane, the thickness of the liquid crystal display formed after assembly with the liquid crystal panel is greatly reduced, which meets the requirements of the current thinning of the liquid crystal display.
  • FIG. 5 is a schematic structural view of a liquid crystal display according to an embodiment of the present invention.
  • a liquid crystal display includes: a liquid crystal panel 2 and the above-described backlight module 1 disposed opposite to the liquid crystal panel 2; wherein the backlight module 1 provides a uniform surface light source to the liquid crystal panel 2, The liquid crystal panel 2 is caused to display an image by the uniform surface light source.

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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)
  • Manufacturing & Machinery (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种背光模块，其包括：导光板（10），包括；相对的第一面（12）和入光面（11），相对且连接在入光面（11）与第一面（12）之间的第二面（13）和第三面（14），相对且与入光面（11）、第一面（12）、第二面（13）和第三面（14）都连接的出光面（15）和反射面（16）；光源（20），邻近入光面（11）设置；反射片（30），包括平直部（31）及由平直部（31）的第一侧弯折形成的第一弯折部（32）；平直部（31）设置在反射面（16）之下，第一弯折部（32）与第一面（12）贴合在一起。还提供了一种具有该背光模块的液晶显示器。该背光模块可以大幅度减小液晶显示器的厚度，从而使液晶显示器符合薄型化的要求。

Description

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，已被应用于生产生活的各个方面。
随着液晶显示技术的发展，市场越来越追求电子设备的薄型化，例如现在的笔记本电脑、手机、平板电脑等需要液晶显示器的电子设备越做越薄，因此液晶显示器也需要越做越薄。如何提供一种薄型化的液晶显示器是目前亟需解决的一个问题。
发明内容
为了实现上述目的，本发明提供了一种背光模块，其包括：导光板，包括入光面、第一面、第二面、第三面、出光面和反射面；其中，所述第一面与所述入光面相对，所述第二面和所述第三面彼此相对且均连接在所述入光面与所述第一面之间，所述出光面和所述反射面彼此相对且均与所述入光面、所述第一面、所述第二面和所述第三面连接；光源，邻近所述入光面设置；反射片，包括平直部及由所述平直部的第一侧弯折形成的第一弯折部；其中，所述平直部设置在所述反射面之下，所述第一弯折部与所述第一面贴合在一起。
进一步地，所述反射片还包括：由所述平直部的第二侧弯折形成的第二弯折部；其中，所述第二弯折部与所述第二面贴合在一起。
进一步地，所述反射片还包括：由所述平直部的第三侧弯折形成的第三弯 折部；其中，所述第三弯折部与所述第三面贴合在一起。
进一步地，所述第一弯折部与所述第一面之间和/或所述第二弯折部与所述第二面之间和/或所述第三弯折部与所述第三面之间通过双面胶带贴合在一起。
进一步地，所述反射面上设置多个网点。
进一步地，所述平直部上设置多个与所述网点错位的双面胶带，所述平直部通过所述多个双面胶带与所述反射面贴合在一起。
进一步地，所述导光板由玻璃制成。
进一步地，所述光源为发光二极管。
进一步地，所述背光模块还包括：散热件，包括承载部及由所述承载部一侧弯折形成的安装部；其中，所述平直部邻近所述入光面的一端以及所述导光板的入光端承载于所述承载部上，以使所述安装部邻近于所述入光面，所述光源安装在所述安装部的朝向所述入光面的表面上。
本发明还提供了一种具有上述的背光模块的液晶显示器。
本发明的有益效果：本发明提供的背光模块，通过不使用背板而降低厚度。在本发明提供的背光模块应用于液晶显示器中时，可以大幅度减小液晶显示器的厚度，从而使液晶显示器符合当下薄型化的要求。
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导光板的侧视图和俯视图；
图2是根据本发明的实施例的反射片的俯视图；
图3是根据本发明的实施例的反射片与导光板的组装立体图；
图4是根据本发明的实施例的背光模块的结构示意图；
图5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，为了清楚起见，夸大了层和区域的厚度。相同的标号在附图中始终表示相同的元件。
将理解的是，尽管在这里可使用术语“第一”、“第二”、“第三”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导光板的侧视图和俯视图。在图1中，左图为俯视图，右图为侧视图。
参照图2，导光板10为平板型导光板，但本发明并不限制于此，例如，导光板10也可为楔形导光板。导光板10包括六个面，这六个面包括四个侧面以及与这四个侧面均连接且相对设置的顶面和底面。在本实施例中，指定四个侧面之一为入光面11，与入光面11相对的侧面为第一面12，连接在入光面11和第一面12之间且彼此相对的两个侧面分别为第二面13和第三面14，顶面被指定为出光面15，底面被指定为反射面16；当然，这里的定义只作为一种示例，本发明并不限制于此。
图2是根据本发明的实施例的反射片的俯视图。
参照图2，根据本发明的实施例的反射片30包括平直部31以及由该平直部31的三侧分别弯折形成的第一弯折部32、第二弯折部33和第三弯折部34。在反射片30与导光板10组装前，可先在第一弯折部32、第二弯折部33和第三弯折部34上分别设置双面胶带70。当然，在本发明中，也可利用胶水等其他粘结剂来代替双面胶带70。此外，还可在平直部31设置多个双面胶带70， 具体作用将在下面描述。
图3是根据本发明的实施例的反射片与导光板的组装立体图。
参照图3，平直部31设置在反射面16之下，而第一弯折部32、第二弯折部33和第三弯折部34分别与第一面12、第二面13和第三面14通过双面胶带70对应结合在一起。这样，可增加反射片30与导光板10的结合牢固度。当然，应理解的是，仅利用反射片30的一个弯折部与导光板10的一个侧面结合，或者利用反射片30的两个弯折部与导光板10的两个侧面对应结合，同样可以达到固定反射片30与导光板10的效果。例如，利用第一弯折部32与第一面12结合在一起；在这种情况下，反射片30可以不包括第二弯折部33和第三弯折部34。
图4是根据本发明的实施例的背光模块的结构示意图。
参照图4，根据本发明的实施例的背光模块1包括：导光板10、光源20、反射片30、散热件(或称热沉)40、胶框50及三张光学膜片60。
具体而言，散热件40整体呈“L”型，其包括：承载部41及由承载部41一侧弯折形成的安装部42。导光板10和反射片30采用图3所示的方式组装后，反射片30的平直部31的邻近入光面11的一侧以及导光板10的入光端(即具有入光面11的端部)依次承载于承载部41上。这样，可以使安装部42邻近入光面11。
光源20可以是发光二极管LED，但本发明并不限制于此。光源20设置于安装部42的朝向入光面11的表面上，以使光源20邻近于入光面11。
三张光学膜片60沿着远离出光面15的方向依次设置在出光面15上，以改善由出光面15出射的光线。应当理解的是，本发明中的光学膜片60的数量并不以三张为限，其可根据实际情况设定。
胶框50设置在三张光学膜片60之上。胶框50与散热件40固定结合，从而将三张光学膜片60以及导光板10、光源20、反射片30固定在胶框50和散热件40之间。
进一步地，在本实施例中，反射面16上设置若干网点80；其中，网点80的形状在本实施例中并不作具体限定。当反射片30的平直部31与反射面16相对设置时，可通过平直部31上设置的多个双面胶带70与反射面16贴合，从而更进一步地提高反射片30与导光板10的结合牢固度。这里，需要说明的是，平直部31上的双面胶带70与网点80错位设置。
在本实施例中，导光板10由透明的玻璃制成。由于玻璃的强度远大于PMMA或MS等材料的强度，因此根据本发明的实施例的背光模块1可不包括背板，仅利用导光板10的强度来支撑。这样，与现有技术相比，当背光模块1不包括背板时，其与液晶面板组装后形成的液晶显示器的厚度会大大降低，符合了当下液晶显示器薄型化的要求。
图5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5，根据本发明的实施例的液晶显示器包括：液晶面板2以及与该液晶面板2相对设置的上述的背光模块1；其中，该背光模块1提供均匀的面光源给液晶面板2，以使液晶面板2借由该均匀的面光源显示影像。
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 (16)

  1. 一种背光模块，其特征在于，包括：
    导光板，包括入光面、第一面、第二面、第三面、出光面和反射面；其中，所述第一面与所述入光面相对，所述第二面和所述第三面彼此相对且均连接在所述入光面与所述第一面之间，所述出光面和所述反射面彼此相对且均与所述入光面、所述第一面、所述第二面和所述第三面连接；
    光源，邻近所述入光面设置；
    反射片，包括平直部及由所述平直部的第一侧弯折形成的第一弯折部；
    其中，所述平直部设置在所述反射面之下，所述第一弯折部与所述第一面贴合在一起。
  2. 根据权利要求1所述的背光模块，其特征在于，所述反射片还包括：由所述平直部的第二侧弯折形成的第二弯折部；其中，所述第二弯折部与所述第二面贴合在一起。
  3. 根据权利要求2所述的背光模块，其特征在于，所述反射片还包括：由所述平直部的第三侧弯折形成的第三弯折部；其中，所述第三弯折部与所述第三面贴合在一起。
  4. 根据权利要求3所述的背光模块，其特征在于，所述第一弯折部与所述第一面之间和/或所述第二弯折部与所述第二面之间和/或所述第三弯折部与所述第三面之间通过双面胶带贴合在一起。
  5. 根据权利要求1所述的背光模块，其特征在于，所述反射面上设置多个网点。
  6. 根据权利要求2所述的背光模块，其特征在于，所述反射面上设置多个网点。
  7. 根据权利要求3所述的背光模块，其特征在于，所述反射面上设置多 个网点。
  8. 根据权利要求4所述的背光模块，其特征在于，所述反射面上设置多个网点。
  9. 根据权利要求5所述的背光模块，其特征在于，所述平直部上设置多个与所述网点错位的双面胶带，所述平直部通过所述多个双面胶带与所述反射面贴合在一起。
  10. 根据权利要求6所述的背光模块，其特征在于，所述平直部上设置多个与所述网点错位的双面胶带，所述平直部通过所述多个双面胶带与所述反射面贴合在一起。
  11. 根据权利要求7所述的背光模块，其特征在于，所述平直部上设置多个与所述网点错位的双面胶带，所述平直部通过所述多个双面胶带与所述反射面贴合在一起。
  12. 根据权利要求8所述的背光模块，其特征在于，所述平直部上设置多个与所述网点错位的双面胶带，所述平直部通过所述多个双面胶带与所述反射面贴合在一起。
  13. 根据权利要求1所述的背光模块，其特征在于，所述导光板由玻璃制成。
  14. 根据权利要求1所述的背光模块，其特征在于，所述光源为发光二极管。
  15. 根据权利要求1所述的背光模块，其特征在于，所述背光模块还包括：
    散热件，包括承载部及由所述承载部一侧弯折形成的安装部；
    其中，所述平直部邻近所述入光面的一端以及所述导光板的入光端承载于所述承载部上，以使所述安装部邻近于所述入光面，所述光源安装在所述安装部的朝向所述入光面的表面上。
  16. 一种液晶显示器，包括相对设置的液晶面板和背光模块，其特征在于， 所述背光模块包括：
    导光板，包括入光面、第一面、第二面、第三面、出光面和反射面；其中，所述第一面与所述入光面相对，所述第二面和所述第三面彼此相对且均连接在所述入光面与所述第一面之间，所述出光面和所述反射面彼此相对且均与所述入光面、所述第一面、所述第二面和所述第三面连接；
    光源，邻近所述入光面设置；
    反射片，包括平直部及由所述平直部的第一侧弯折形成的第一弯折部；
    其中，所述平直部设置在所述反射面之下，所述第一弯折部与所述第一面贴合在一起。
PCT/CN2016/070825 2015-10-20 2016-01-13 背光模块及液晶显示器 Ceased WO2017067101A1 (zh)

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