WO2016197422A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

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Publication number
WO2016197422A1
WO2016197422A1 PCT/CN2015/082797 CN2015082797W WO2016197422A1 WO 2016197422 A1 WO2016197422 A1 WO 2016197422A1 CN 2015082797 W CN2015082797 W CN 2015082797W WO 2016197422 A1 WO2016197422 A1 WO 2016197422A1
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WO
WIPO (PCT)
Prior art keywords
quantum dot
light
dot film
backlight module
guide plate
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/CN2015/082797
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English (en)
French (fr)
Inventor
曾杰
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.)
Wuhan China Star Optoelectronics Technology Co Ltd
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Wuhan China Star Optoelectronics Technology Co Ltd
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Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd, Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to GB1710855.6A priority Critical patent/GB2549225B/en
Priority to US14/778,589 priority patent/US20170153384A1/en
Priority to JP2017542109A priority patent/JP6514349B2/ja
Priority to KR1020177021768A priority patent/KR102068397B1/ko
Publication of WO2016197422A1 publication Critical patent/WO2016197422A1/zh
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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • 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
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/0229—Optical fibres with cladding with or without a coating characterised by nanostructures, i.e. structures of size less than 100 nm, e.g. quantum dots
    • 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
    • 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 
    • G02F1/015—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction
    • G02F1/017—Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells
    • G02F1/01791—Quantum boxes or quantum dots
    • 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
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a backlight module and a display device.
  • Liquid crystal displays are the mainstream flat panel display technology on the market today.
  • the display device requires a backlight to illuminate the liquid crystal display as a light source.
  • the conventional backlight module comprises a backlight composed of LEDs.
  • the light of the backlight is converted into a surface light source through the light guide plate, and is emitted from the backlight module through the uniformity of the diffusion sheet, and the liquid crystal panel can display us.
  • people are increasingly demanding the quality of display devices, and high color gamut has become a hot topic in the field.
  • the quantum dot is a quasi-zero-dimensional nanomaterial composed of a small number of atoms; its particle size is generally between 1 and 10 nm, due to The electrons and holes are quantum confinement, and the continuous band structure becomes a discrete energy level structure with molecular characteristics. After excitation, it can emit fluorescence, thereby changing the color gamut of the injected light.
  • the quantum dot film is used to replace the phosphor, and the quantum dot film is loaded between the light guide plate and the prism sheet to improve the color gamut of the liquid crystal display device.
  • the quantum dot film is very thick (the average quantum dot film reaches 210 um or more), and there is a problem of edge failure, which makes it particularly thin in electronic products. Mobile phone applications are limited.
  • the technical problem to be solved by the present invention is to provide a backlight module that solves the technical problem of edge failure when the quantum dot film improves the backlight color gamut.
  • the invention also provides a display device.
  • the present invention provides a backlight module, which includes a plastic frame, a light guide plate, a backlight, a retroreflective sheet, and a quantum dot film, wherein the light guide plate, the backlight, the reflective sheet, and the quantum dot film are disposed on the glue
  • the backlight is located on the light incident side of the light guide plate
  • the quantum dot film includes a main body and an extension portion at opposite ends of the main body, and the reflective sheet and the main body of the quantum dot film are laminated on the guide.
  • Two opposite surfaces of the light plate are respectively bent toward the light incident side of the light guide plate and the other side opposite to the light incident side, and then attached to the light reflecting sheet.
  • the light guide plate includes a side surface opposite to the light incident side, a light exit surface connected to the light side and the side surface, and a bottom surface opposite to the light exit surface.
  • the light reflecting sheet is laminated on the bottom surface, and the quantum dot film is laminated on the light guide plate.
  • the two extending segments are respectively bent toward the light incident side and the side surface, and then attached to the surface of the light reflecting sheet away from the bottom surface.
  • a double-sided tape is disposed between the two extension segments and the reflector.
  • the two extensions are provided with a double-sided tape away from the surface of the reflector, and the double-sided tape is fixed around the frame.
  • the length of the quantum dot film extension after being bent and attached to the reflector is less than or equal to half of the length of the reflector.
  • the backlight module further includes an optical film laminated on the main body of the quantum dot film.
  • the edge of the extension of the quantum dot film extension direction is a cutting edge when the quantum dot film is cut.
  • the quantum dot film is formed by quantum dots of a PET material encapsulation size ratio.
  • the present invention provides a display device including a liquid crystal panel and the backlight module described above, the liquid crystal panel is disposed on the backlight module, and the liquid crystal panel covers the optical film.
  • the double-sided tape is used to fix the liquid crystal panel and the optical film.
  • the backlight module of the present invention is disposed on the bottom of the reflector in the process of the quantum dot film which is easy to be broken during the cutting process, which does not affect the light entering and exiting of the light guide plate, and avoids the light guide plate.
  • the quantum dot film at the edge portion of the light-emitting surface fails to affect the display effect of the display device.
  • FIG. 1 is a schematic cross-sectional view of a backlight module in a preferred embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing another assembly manner of a quantum dot film of a backlight module of the present invention.
  • a preferred embodiment of the present invention provides a backlight module including a plastic frame 10, a light guide plate 11, a backlight (not shown), a reflective sheet 12, and a quantum. Point film 13.
  • the light guide plate 11 , the backlight, the retroreflective sheet 12 , and the quantum dot film 13 are disposed in the plastic frame 10 .
  • the backlight is located on the light incident side 111 of the light guide plate 12 .
  • the quantum dot film 13 includes a main body 31 and an extending portion 132 at opposite ends of the main body 131.
  • the retroreflective sheet 12 and the main body 131 of the quantum dot film 13 are laminated on opposite surfaces of the light guide plate 11.
  • the two opposite extending sections 132 are respectively bent toward the light incident side 111 of the light guide plate 11 and the other side opposite to the light incident side 111, and are attached to the retroreflective sheeting 12 .
  • the plastic frame 10 is a rectangular frame, and the quantum dot film 13, the light guide plate 11 and the retroreflective sheet 12 are sequentially stacked, and the plastic frame 10 surrounds the quantum dot film 13, the light guide plate 11 and the reflective sheet. 12 formed component perimeter.
  • the backlight is an LED lamp disposed between the plastic frame 10 and the light incident side of the light guide plate 11 for providing light to the backlight module.
  • the light guide plate 11 includes a side surface 112 opposite to the light incident side 111, a light exit surface 113 connected to the light side 111 and the side surface 112, and a bottom surface 114 opposite to the light exit surface 113.
  • the retroreflective sheeting 12 is laminated on the bottom surface 114, and the quantum dot film 13 is laminated on the light emitting surface 113.
  • the two extensions 132 are respectively bent toward the light-incident side 111 and the side surface 112 and attached to the surface of the reflector 12 away from the bottom surface 114; it can be understood that the extension section 132 is Into the light
  • the side surface 111 and the side surface 112 are bent and adhered to the light-receiving sheet 12 and then to the plane of the light-reflecting sheet 12 and then attached to the light-reflecting sheet 12 .
  • the length of the extension portion 132 of the quantum dot film 13 after being bent and attached to the reflector 12 is less than or equal to half the length of the reflector 12 .
  • the length of the extension segment 132 and the reflector 12 is determined according to the specific situation. The optimal solution is to prevent the edge of the extension segment 132 from being affected by the backlight and to fix the quantum dot film 13 well. To achieve cost balance.
  • the light guide plate 11 is a rectangular plate body.
  • the quantum dot film 13 has a rectangular plate shape and a width equal to or smaller than a width of the light guide plate 11, that is, a length on the light incident side.
  • the quantum dot film 13 has a width equal to a width of the light guide plate 11.
  • the length of the quantum dot film 13 is greater than the length of the light guide plate 11 , that is, the distance between the light incident side 111 and the side surface 112 .
  • the length of the portion of the extension portion 132 of the quantum dot film 13 to which the retroreflective sheeting 12 is attached is greater than or equal to 1 mm.
  • the quantum dot film 13 is formed by cutting from a film substrate formed of quantum dots mixed in a material size ratio such as PET. That is to say, the quantum dots are different in size or partially identical, and are awakened and mixed according to the ratio.
  • the edge in the extending direction of the extending portion 132 of the quantum dot film 13 is a cutting edge when the quantum dot film is cut.
  • the edge is susceptible to external conditions such as water and oxygen, and there is a problem of edge failure.
  • the quantum dot film 13 of the present invention is disposed under the light reflecting sheet 12 instead of the light emitting surface of the light guiding plate 11.
  • the edge of the 113 is flush, which not only avoids the failure of the quantum dot film at the edge of the light-emitting surface 113, but also causes the light quality, and the edge of the quantum dot film 13 which is easy to be broken is disposed under the light-reflecting sheet 12, and does not affect the guide. Light out of the light board.
  • a double-sided tape 14 is disposed between the two extending segments 132 and the reflector 12 .
  • the double-sided tape 14 fixes the extension portion 132 and the reflector 12, which can save the use amount of the double-sided tape.
  • the two extending segments 132 are disposed away from the surface of the reflector 12 with a double-sided tape 15 , and the double-sided tape 15 is fixed around the frame 10 . And the outer surface of the double-sided tape 15 is provided with a protective film 16 for protecting the double-sided tape 15 from being contaminated and failing.
  • the backlight module further includes an optical film 17 covering the main body 131 of the quantum dot film 13.
  • the present invention provides a display device including a liquid crystal panel and the backlight module described above,
  • the liquid crystal panel is disposed on the backlight module, and the liquid crystal panel covers the optical film 17.
  • the backlight module of the present invention uses the quantum dot film 13 to realize high color gamut display quality of the display device, and the edge of the quantum dot film 13 which is easy to be broken during the cutting process is disposed at the bottom of the reflective sheet, neither The light incident and the light exiting of the light guide plate are affected, and the quantum dot film at the edge portion of the light exit surface 113 of the light guide plate 11 is prevented from being invalid, thereby affecting the display effect of the display device.
  • the backlight module of the invention has a simple structure and ensures high color gamut display of the display module.

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

Abstract

一种背光模组，包括胶框（10）、导光板（11）、背光源、反光片（12）及量子点薄膜（13），导光板（11）、背光源、反光片（12）、量子点薄膜（13）设于胶框（10）内，背光源位于导光板（11）的入光侧，量子点薄膜（13）包括主体（131）及位于主体（131）相对两端的延伸段（132），反光片（12）与量子点薄膜（13）的主体（131）层叠于导光板（11）两个相反的表面，两个相对的延伸段（132）分别向导光板（11）的入光侧及与入光侧相对的另一侧弯折后贴合于反光片（12）上。还公开了一种显示装置。

Description

背光模组及显示装置
本发明要求2015年6月12日递交的发明名称为“背光模组及显示装置”的申请号201510326065.X的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及液晶显示技术领域，特别涉及一种背光模组及显示装置。
背景技术
液晶显示器是当今市场上的主流平板显示装置技术。而显示装置都需要背光来作为光源点亮液晶显示器。传统的背光模组包括LED组成的背光源，背光源的光线经过导光板将光源转化成面光源射出，经过扩散片的匀光作用，从背光模组出射，经过液晶面板后即可显示出我们所需要的图像。随着科技的进步，人们对显示装置的品质需求越来越高，高色域成为该领域内的一个热门话题。
现在市场上一种热点技术是采用量子点(quantum dot)改进背光色域，量子点是准零维的纳米材料，由少量的原子所构成；其粒径一般介于1～10nm之间，由于电子和空穴被量子限域，连续的能带结构变成具有分子特性的分立能级结构，受激后可以发射荧光，进而改变注入光的色域。
背光模组中主要是通过量子点薄膜来替代荧光粉，将量子点薄膜加载在导光板与棱镜片之间，以改进液晶显示装置的色域。但是量子点薄膜由于易受水氧等外界条件的影响，封装做得很厚(一般的量子点膜片达到210um以上)，并且存在边缘失效的问题，这样使得其在电子产品特别是薄形化手机的应用中受到限制。
发明内容
本发明所要解决的技术问题在于提供一种背光模组，解决在量子点薄膜提高背光色域时边缘失效的技术问题。
本发明还提供一种显示装置。
为了实现上述目的，本发明实施方式提供如下技术方案：
本发明提供一种背光模组，所述背光模组包括胶框、导光板、背光源、反光片及量子点薄膜，所述导光板、背光源、反光片、量子点薄膜设于所述胶框内，所述背光源位于所述导光板的入光侧，所述量子点薄膜包括主体及位于主体相对两端的延伸段，所述反光片与所述量子点薄膜的主体层叠于所述导光板两个相反的表面，所述两个相对的延伸段分别向所述导光板的入光侧及与入光侧相对的另一侧弯折后贴合于所述反光片上。
其中，所述导光板包括与入光侧相对的侧面、连接入光侧与侧面的出光面及与出光面相对的底面，所述反光片层叠设于底面上，所述量子点薄膜层叠于所述出光面上，所述两个延伸段分别向所述入光侧及所述侧面弯折后贴合于所述反光片远离底面的表面上。
其中，所述两个延伸段与所述反光板之间设有双面胶。
其中，所述两个延伸段远离所述反光板的表面设有双面胶，所述双面胶周围与所述边框固定。
其中，所述量子点薄膜延伸段弯折后与所述反光板贴合的的长度小于等于反光板的长度的一半。
其中，所背光模组还包括光学膜片，所述光学膜片层叠设于所述量子点薄膜的主体上。
其中，所述量子点薄膜延伸段延伸方向的边缘为量子点薄膜进行裁切时的切割边。
其中，所述量子点薄膜由PET材料封装大小比例混合的量子点所形成。
本发明提供一种显示装置，其包括液晶面板及以上所述的背光模组，所述液晶面板设于所述背光模组上，且所述液晶面板覆盖所述光学膜片。
其中，当所述两个延伸段远离所述反光板的表面设有双面胶时，所述双面胶用于固定所述液晶面板与光学膜片。
本发明的背光模组将所述量子点薄膜的在切割过程中容易失效的边缘设于所述反光片的底部，既不会影响所述导光板的入光及出光，又避免了导光板的出光面边缘部分的量子点薄膜失效而影响显示装置显示画面效果。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以如这些附图获得其他的附图。
图1是本发明较佳实施方式中的背光模组截面示意图。
图2是本发明的背光模组的量子点薄膜另一种装配方式截面示意图。
具体实施方式
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述。
请参阅图1与图2，本发明的较佳实施例提供了一种背光模组，所述背光模组包括胶框10、导光板11、背光源(图未示)、反光片12及量子点薄膜13。所述导光板11、背光源、反光片12、量子点薄膜13设于所述胶框10内。所述背光源位于所述导光板12的入光侧111。所述量子点薄膜13括主体31及位于主体131相对两端的延伸段132，所述反光片12与所述量子点薄膜13的主体131层叠于所述导光板11两个相反的表面，所述两个相对的延伸段132分别向所述导光板11的入光侧111及与入光侧111相对的另一侧弯折后贴合于所述反光片12上。
具体的，所述胶框10为矩形框体，所述量子点薄膜13、导光板11及反光片12依次叠加设置，所述胶框10围绕所述量子点薄膜13、导光板11及反光片12形成的组件周缘。所述背光源为LED灯，其设于所述胶框10与所述导光板11的入光侧之间，用于为所述背光模组提供光。
进一步的，所述导光板11包括与入光侧111相对的侧面112、连接入光侧111与侧面112的出光面113及与出光面113相对的底面114。所述反光片12层叠设于底面114上，所述量子点薄膜13层叠于所述出光面113上。所述两个延伸段132分别向所述入光侧111及所述侧面112弯折后贴合于所述反光片12远离底面114的表面上；此处可以理解的是，所述延伸段132向所述入光 侧111及所述侧面112弯折并紧贴所述向所述入光侧111及所述侧面112后再弯折至反光片12所在平面与所述反光片12贴合。
更进一步的，所述量子点薄膜13的延伸段132弯折后与所述反光板12贴合的长度小于等于反光板12的长度的一半。本实施例中，延伸段132与反光板12贴合的长度依具体情况而定，最优方案是既能防止延伸段132的边缘失效对背光的影响，又能很好的固定量子点薄膜13，达到成本平衡。
具体的，所述导光板11为矩形板体。所述量子点薄膜13为长方形板体状，其宽度小于等于所述导光板11的宽度，即入光侧的长度。优选的，所述所述量子点薄膜13宽度等于所述导光板11的宽度。所述量子点薄膜13的长度大于所述导光板11的长度，即所述入光侧111与所述侧面112之间的距离。所述量子点薄膜13的延伸段132与所述反光片12贴合的部分的长度大于等于1mm。
所述量子点薄膜13是从由PET等材料封装大小比例混合的量子点所形成的薄膜基材中裁切形成。也就是说量子点的大小各异或者部分相同，按照比例惊醒混合。所述量子点薄膜13的延伸段132延伸方向的边缘为量子点薄膜进行裁切时的切割边。此边缘易受水氧等外界条件的影响，存在边缘失效的问题，然而，本发明的量子点薄膜13将其设于所述反光片12的下方，而不是与所述导光板11的出光面113边缘平齐设置，不仅避免了在出光面113边缘的量子点薄膜失效，而导致出光品质，而且所述量子点薄膜13容易失效的边缘设于所述反光片12的下方，不会影响导光板的出光。
进一步的，如图1所示，所述两个延伸段132与所述反光板12之间设有双面胶14。所述双面胶14固定所述延伸段132与所述反光板12，可节省双面胶的使用量。
进一步的，如图2所示，所述两个延伸段132远离所述反光板12的表面设有双面胶15，所述双面胶15周围与所述边框10固定。并且所述双面胶15的外表面设有保护膜16，用于保护双面胶15不会受到污染而失效。
进一步的，所背光模组还包括光学膜片17，所述光学膜片17覆盖于所述量子点薄膜13的主体131上。
本发明提供一种显示装置，其包括液晶面板及以上所述的背光模组，所述 液晶面板设于所述背光模组上，且所述液晶面板覆盖所述光学膜片17。
本发明的背光模组采用量子点薄膜13实现显示装置的高色域显示品质，并且将所述量子点薄膜13的在切割过程中容易失效的边缘设于所述反光片的底部，既不会影响所述导光板的入光及出光，又避免了导光板11的出光面113边缘部分的量子点薄膜失效而影响显示装置显示画面效果。本发明的背光模组结构简单且保证了显示模组的高色域显示。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (20)

  1. 一种背光模组，其中，背光模组包括胶框、导光板、背光源、反光片及量子点薄膜，所述导光板、背光源、反光片、量子点薄膜设于所述胶框内，所述背光源位于所述导光板的入光侧，所述量子点薄膜包括主体及位于主体相对两端的延伸段，所述反光片与所述量子点薄膜的主体层叠于所述导光板两个相反的表面，所述两个相对的延伸段分别向所述导光板的入光侧及与入光侧相对的另一侧弯折后贴合于所述反光片上。
  2. 如权利要求1所述的背光模组，其中，所述导光板包括与入光侧相对的侧面、连接入光侧与侧面的出光面及与出光面相对的底面，所述反光片层叠设于底面上，所述量子点薄膜层叠于所述出光面上，所述两个延伸段分别向所述入光侧及所述侧面弯折后贴合于所述反光片远离底面的表面上。
  3. 如权利要求2所述的背光模组，其中，所述两个延伸段与所述反光板之间设有双面胶。
  4. 如权利要求2所述的背光模组，其中，所述两个延伸段远离所述反光板的表面设有双面胶。
  5. 如权利要求3所述的背光模组，其中，所述量子点薄膜延伸段弯折后与所述反光板贴合的长度小于等于反光板的长度的一半。
  6. 如权利要求4所述的背光模组，其中，所述量子点薄膜延伸段弯折后与所述反光板贴合的长度小于等于反光板的长度的一半。
  7. 如权利要求5所述的背光模组，其中，所背光模组还包括光学膜片，所述光学膜片覆盖于所述量子点薄膜的主体上。
  8. 如权利要求6所述的背光模组，其中，所背光模组还包括光学膜片，所述光学膜片覆盖于所述量子点薄膜的主体上。
  9. 如权利要求5所述的背光模组，其中，所述量子点薄膜延伸段延伸方向的边缘为量子点薄膜进行裁切时的切割边。
  10. 如权利要求6所述的背光模组，其中，所述量子点薄膜延伸段延伸方向的边缘为量子点薄膜进行裁切时的切割边。
  11. 如权利要求5所述的背光模组，其中，所述量子点薄膜由PET材料 封装大小比例混合的量子点所形成。
  12. 如权利要求6所述的背光模组，其中，所述量子点薄膜由PET材料封装大小比例混合的量子点所形成。
  13. 一种显示装置，其中，包括液晶面板及背光模组，背光模组包括胶框、导光板、背光源、反光片及量子点薄膜，所述导光板、背光源、反光片、量子点薄膜设于所述胶框内，所述背光源位于所述导光板的入光侧，所述量子点薄膜包括主体及位于主体相对两端的延伸段，所述反光片与所述量子点薄膜的主体层叠于所述导光板两个相反的表面，所述两个相对的延伸段分别向所述导光板的入光侧及与入光侧相对的另一侧弯折后贴合于所述反光片上，所述液晶面板设于所述背光模组上，且所述液晶面板覆盖所述光学膜片。
  14. 如权利要求9所述的显示装置，其中，当所述两个延伸段远离所述反光板的表面设有双面胶时，所述双面胶用于固定所述液晶面板与光学膜片。
  15. 如权利要求13所述的显示装置，其中，所述导光板包括与入光侧相对的侧面、连接入光侧与侧面的出光面及与出光面相对的底面，所述反光片层叠设于底面上，所述量子点薄膜层叠于所述出光面上，所述两个延伸段分别向所述入光侧及所述侧面弯折后贴合于所述反光片远离底面的表面上。
  16. 如权利要求15所述的显示装置，其中，所述两个延伸段与所述反光板之间设有双面胶。
  17. 如权利要求15所述的显示装置，其中，所述两个延伸段远离所述反光板的表面设有双面胶。
  18. 如权利要求16所述的显示装置，其中，所述量子点薄膜延伸段弯折后与所述反光板贴合的长度小于等于反光板的长度的一半。
  19. 如权利要求17所述的显示装置，其中，所述量子点薄膜延伸段弯折后与所述反光板贴合的长度小于等于反光板的长度的一半。
  20. 如权利要求18所述的显示装置，其中，所背光模组还包括光学膜片，所述光学膜片覆盖于所述量子点薄膜的主体上。
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