WO2018209737A1 - 一种液晶显示器的背光系统 - Google Patents

一种液晶显示器的背光系统 Download PDF

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Publication number
WO2018209737A1
WO2018209737A1 PCT/CN2017/087369 CN2017087369W WO2018209737A1 WO 2018209737 A1 WO2018209737 A1 WO 2018209737A1 CN 2017087369 W CN2017087369 W CN 2017087369W WO 2018209737 A1 WO2018209737 A1 WO 2018209737A1
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WIPO (PCT)
Prior art keywords
quantum dot
dot film
light guide
guide plate
liquid crystal
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Ceased
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PCT/CN2017/087369
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English (en)
French (fr)
Inventor
李雪云
唐岳军
蔡静
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US15/549,945 priority Critical patent/US10416371B2/en
Publication of WO2018209737A1 publication Critical patent/WO2018209737A1/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
    • 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
    • G02B6/0065—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
    • G02B6/0086—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
    • G02B6/02—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
    • G02F1/133308—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
    • G02F1/1335—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
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/36—Micro- or nanomaterials

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a backlight system for a liquid crystal display.
  • the present invention provides an improved backlight system for a liquid crystal display.
  • the present invention provides a backlight system for a liquid crystal display, comprising:
  • the light guide plate is disposed on the frame for converting a side light source into a surface light source, and the optical film set is disposed on the quantum dot film when the quantum dot film is disposed at an upper portion of the light guide plate
  • the optical film group is disposed on the light guide plate when the upper portion of the sheet or the quantum dot film is disposed at a lower portion of the light guide plate;
  • the left and right sides and/or the upper and lower sides of the quantum dot film are processed with a bent portion.
  • the quantum dot film when the quantum dot film is disposed on the light guide plate portion, the bent portions of the left and right sides or the upper and lower sides of the quantum dot film are inserted downward into the gap. Said on both sides of the light guide;
  • bent portions of the left and right sides and the upper and lower sides of the quantum dot film are inserted into the gap and wrapped around the four sides of the light guide plate;
  • the bent portions on the left and right sides or the upper and lower sides of the quantum dot film are wrapped upward on both sides of the optical film group;
  • bent portions on the left and right sides and the upper and lower sides of the quantum dot film are wrapped around the optical film group.
  • the quantum dot film when the quantum dot film is disposed at a lower portion of the light guide plate, the left and right sides or the bent portions of the upper and lower sides of the quantum dot film are inserted upward in the gap to surround the light guide plate. Both sides;
  • bent portions of the left and right sides and the upper and lower sides of the quantum dot film are inserted upward in the gap and wrapped around the four sides of the light guide plate.
  • the quantum dot film is uniformly sandwiched between the upper PET film and the lower PET (polyethylene terephthalate) film by a plurality of quantum dots or by a plurality of
  • the quantum dots are uniformly mixed and dried in a PI flexible polymer or a complex fluid or a plurality of the quantum dots are mixed with a transparent resin solvent and coated on a PI (polyimide) flexible substrate layer.
  • the length and/or width of the quantum dot film is larger than the length of the light guide plate.
  • the length and/or width of the quantum dot film is larger than the length of the optical film set.
  • the backlight system of the liquid crystal display provided by the present invention has a light guide plate disposed on the frame, and the quantum dot film is disposed on the upper or lower portion of the light guide plate, and the optical film set is disposed.
  • the left and right sides of the quantum dot film are left with a margin, and the backlight system is processed to form the bent portion or the left and right sides and the upper and lower sides while leaving a margin.
  • the remaining amount is processed into a bent portion.
  • the failure zone is located in the margin and the remainder is on the back
  • the optical system first bends and bends the light guide plate or the optical film group to make the display panel display a quantum dot diaphragm with a high efficiency color gamut conversion function on the whole surface.
  • the effect of the failure zone on the quality of the display is avoided by the cutting of the quantum dot film, and the structure is simple and the processing is convenient and quick.
  • FIG. 1 is a schematic view showing a structure in which a bent portion on both sides of a quantum dot film is disposed on both sides of a light guide plate in a backlight system of a liquid crystal display according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing the structure in which the bent portions on both sides of the quantum dot film are wrapped on both sides of the optical film group when the quantum dot film in the backlight system of the liquid crystal display is located on the light guide plate in one embodiment of the present application.
  • 3 is a schematic view showing the structure of the bent portions on both sides of the quantum dot film wrapped on both sides of the light guide plate when the quantum dot film in the backlight system of the liquid crystal display is located at the lower portion of the light guide plate in an embodiment of the present application.
  • FIG. 4 is a schematic structural view showing a bent portion of a left and right sides of a quantum dot film in a backlight system of a liquid crystal display according to an embodiment of the present application.
  • FIG. 5 is a schematic structural view showing a folding portion of a left and right sides of a quantum dot film in a backlight system of a liquid crystal display according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural view of a first embodiment of a quantum dot diaphragm in a backlight system of a liquid crystal display according to an embodiment of the present application.
  • FIG. 7 is a schematic structural view of a second embodiment of a quantum dot diaphragm in a backlight system of a liquid crystal display according to an embodiment of the present application.
  • FIG. 8 is a schematic structural view of a third embodiment of a quantum dot diaphragm in a backlight system of a liquid crystal display according to an embodiment of the present application.
  • a backlight system of a liquid crystal display having a quantum dot film including: a frame 4, a quantum dot film 2, a light guide plate 3, and an optical film group 1; wherein, in the frame 4 is provided with a light guide plate 3 for converting the side light source into a surface light source, and the optical film group 1 includes but is not limited to a prism sheet, a diffusion sheet, the quantum dot film 2 is disposed on the upper portion of the light guide plate 3, the optical film group 1 is disposed on the upper portion of the quantum dot film 2, or the quantum dot film 2 is disposed on the lower portion of the light guide plate 3, and the optical film group 1 is disposed at The upper part of the light guide plate 3. As shown in FIG.
  • the left and right sides of the quantum dot film 2 or the upper and lower sides are formed with a bent portion 21.
  • the left and right sides of the quantum dot film 2 and the upper and lower sides are simultaneously processed with a bent portion 21.
  • the backlight system with the quantum dot film in the invention enables the display panel to display a color gamut conversion function with high efficiency on the entire surface.
  • the effect of the failure zone on the quality of the display is avoided by the cutting of the quantum dot film, and the structure is simple and the processing is convenient and quick.
  • Figure 1 illustrates a backlight system (not shown in some prior art) for a liquid crystal display comprising a quantum dot film, the backlight system being disposed behind the liquid crystal display to provide a backlight for the display.
  • the quantum dot film 2 is generally used above the light guide plate 3. However, when the quantum dot film 2 is cut, the area of the cut portion is about 1 mm, which leads to a decrease in optical quality such as chromatic aberration or color saturation failure in the edge region. .
  • a gap 5 is left between the edge of the frame 4 and the edge of the light guide plate 3 in Figures 1-3.
  • the width of the gap 5 is preferably such that the bent portion 21 is inserted. If the width of the gap 5 is too large, the bent portion 21 may be shaken, and if the width of the gap 5 is too small, the bent portion 21 may not protrude.
  • the bent portions 21 of the left and right sides or the upper and lower sides of the quantum dot film 2 are inserted into the gap 5 and wrapped around the light guide plate 3; In one embodiment, the left and right sides of the quantum dot film 2 and the upper and lower sides of the bent portion 21 are inserted into the gap 5 to be wrapped around the four sides of the light guide plate 3; in one embodiment, the quantum dot film 2 of FIG.
  • the bent portions 21 on the left and right sides or the upper and lower sides of the quantum dot film 2 are wrapped upward on both sides of the optical film group 1; in one embodiment, the left and right sides of the quantum dot film 2 and the upper and lower sides are bent.
  • the portion 21 is wrapped around the four sides of the optical film group 1.
  • the quantum dot film 2 is cut, the left and right sides or the upper and lower sides are left with a margin, and the failure zone is located in the margin.
  • the backlight system is manufactured, the left and right sides or the upper and lower sides of the balance are processed into a bend.
  • the left and right sides and the upper and lower sides simultaneously have a margin, and the failure zone is located in the margin.
  • the backlight system is manufactured, the left and right sides and the upper and lower sides of the balance are processed into the bent portion 21.
  • the failure area is located in the margin portion, and the remaining portion is bent in the backlight system, and then the light guide plate 3 or the optical film group 1 is bent, so that the display panel displays a quantum of a color gamut conversion function with high efficiency on the whole surface. Point the film.
  • the effect of the failure zone on the display quality of the quantum dot patch 2 is avoided, and the structure is simple and the processing is convenient and fast.
  • the quantum dot film 2 of FIG. 3 when the quantum dot film 2 of FIG. 3 is disposed at the lower portion of the light guide plate 3, the quantum dot film 2, the left and right sides or the upper and lower sides of the bent portion 21 are inserted into the gap 5 and wrapped around the light guide plate 3; in one embodiment, the left and right sides of the quantum dot diaphragm 2 and the upper and lower sides of the bent portion 21 are inserted upward into the gap 5 On the four sides of the light guide plate 3.
  • the quantum dot film 2 is left with two sides or upper and lower sides with a margin, and the failure zone is located in the margin, and the backlight system is manufactured to bend the left and right sides or the upper and lower sides into a bend.
  • the left and right sides and the upper and lower sides simultaneously have a margin, and the failure zone is located in the margin.
  • the backlight system is manufactured, the left and right sides and the upper and lower sides of the balance are processed into the bent portion 21.
  • the failure area is located in the margin portion, and the remaining portion is bent in the backlight system, and then the light guide plate 3 or the optical film group 1 is bent, so that the display panel displays a quantum of a color gamut conversion function with high efficiency on the whole surface. Point the film.
  • the effect of the failure zone on the display quality of the quantum dot patch 2 is avoided, and the structure is simple and the processing is convenient and fast.
  • the quantum dot patch 2 is constructed in three forms:
  • Form 6 as shown in FIG. 6, is composed of a plurality of quantum dots 22 uniformly sandwiched between an upper PET (polyethylene terephthalate) film 23 and an underlying PET film 24;
  • Form 2 shown in Figure 7, is formed by uniformly mixing a plurality of quantum dots 22 in a PI (polyimide) flexible polymer or complex fluid;
  • Form 3 is shown in Fig. 8.
  • a plurality of quantum dots 22 are mixed with a transparent resin solvent and coated on the PI flexible substrate layer.
  • the length or/and width of the quantum dot film 2 is larger than the length of the light guide plate 3.
  • the length or/and width of the quantum dot film 2 is larger than the length of the optical film group 1.
  • the quantum dot film 2 when the quantum dot film 2 is cut, a margin is left, the failure area is located in the margin portion, and the remaining portion is bent in the backlight to enclose the light guide plate 3 or the optical film group 1 so that the display panel displays the entire surface.
  • the quantum dot film 2 may have a light guide plate 3/optical film group 1 on the upper surface of the light guide plate 3; the quantum dot film 2 may be disposed under the light guide plate 3 to enclose the light guide plate 3.
  • the quantum dot diaphragm 2 the remaining amount of the backlight assembly is attached from both sides and four sides.
  • the quantum dot film may be: the quantum dot 22 is sandwiched and bonded between the two PET films, and the quantum dot 22 is fixed by the adhesive layer to form a quantum dot film 2 between the two PET films.
  • the quantum dot film may be such that the quantum dots 22 are uniformly mixed in a flexible polymer/complex such as PI by uniformly mixing the quantum dots 22 in a flexible polymer fluid state such as PI, and then the polymers pass through. The steps of drying/hardening form the quantum dot film 2.
  • the quantum dot film may be such that the quantum dots 22 are uniformly mixed in a solvent and coated on a flexible substrate such as PI, and the solvent may be a transparent resin (OC or the like) or the like to form the quantum dot film 2.
  • the remaining portion of the quantum dot diaphragm 2 may be bent at 90 degrees when bent, but preferably it is not completely bent at 90 degrees, and may be bent to a certain degree by first bending.
  • the bending radius is strongly correlated with the thickness of the quantum dot diaphragm 2, and the thinner the quantum dot diaphragm 2 is, the smaller the bending radius R can be.
  • the quantum dot film 2 can have a thinner thickness and is more easily bent.
  • the quantum dot film 2 is bent to the side of the backlight, and the quantum dot film 2 has an extremely thin thickness.
  • the backlight system of the present invention is suitable for liquid crystal displays of various applications and sizes, for example, for large-sized displays such as TVs (TVs). Medium size display such as /Notebook/Pad.

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Abstract

一种液晶显示器的背光系统，在框架（4）上设置有导光板（3），量子点膜片（2）设置在导光板（3）的上部或下部，光学膜片组（1）设置在导光板（3）或量子点膜片（2）的上部，该量子点膜片（2）裁切时左右或/和上下两边留有余量，背光系统制造时将该余量加工成折弯部（21），失效区域位于余量部位中，余量部位在背光系统中先弯曲后弯折包覆导光板（3）或光学膜片组（1），使显示面板显示时整面具有较高效率的色域转换功能的量子点膜片（2），避免了量子点膜片（2）裁切产生失效区对显示器画质的影响，而且结构简单，加工方便快捷。

Description

一种液晶显示器的背光系统
相关申请的交叉引用
本申请要求享有于2017年05月16日提交的名称为“一种液晶显示器的背光系统”的中国专利申请CN201710342140.0的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明涉及显示器技术领域，尤其涉及一种液晶显示器的背光系统。
背景技术
随着电子产品的发展，消费者对电子产品的色域要求越来越高，高色域设计也成为了电子产品设计的重要方向。在高色域产品设计中，目前主流的方式是采用量子点膜片来实现高色域转换，此种膜片具有较高效率的色域转换功能。然而，此种膜片在裁切时会导致裁切部位约1mm的区域失效，对于边框较窄的移动产品而言，裁切失效会导致量子点膜片无法较好的运用于产品中。针对上述技术存在的问题，在本领域中希望寻求一种能够弥补量子点膜片在裁切时存在的裁切部位失效的缺陷，从而实现量子点膜片更好的色域转换功能，以解决现有技术中的不足之处。
发明内容
针对上述问题中存在的不足之处，本发明提供一种改进的液晶显示器的背光系统。
为实现上述目的，本发明提供一种液晶显示器的背光系统，包括：
框架、量子点膜片、导光板和光学膜片组；其中，
在所述框架上设置有所述导光板用于将侧边光源转换成面光源，所述量子点膜片设置在所述导光板的上部时所述光学膜片组设置在所述量子点膜片上部或所述量子点膜片设置在所述导光板的下部时所述光学膜片组设置在所述导光板上部；
所述量子点膜片左右两边和/或上下两边加工有折弯部。
上述的液晶显示器的背光系统，所述框架边缘与所述导光板边缘之间留有空隙。
上述的液晶显示器的背光系统，所述量子点膜片设置在所述导光板上部时，所述量子点膜片左右两边或上下两边的所述折弯部向下插在所述空隙内包在所述导光板两边；
或所述量子点膜片左右两边和上下两边的所述折弯部向下插在所述空隙内包在所述导光板四边；
上述的液晶显示器的背光系统，所述量子点膜片设置在导光板上部时，所述量子点膜片左右两边或上下两边的所述折弯部向上包在所述光学膜片组两边；
或所述量子点膜片左右两边和上下两边的所述折弯部包在所述光学膜片组四边。
上述的液晶显示器的背光系统，所述量子点膜片设置在所述导光板下部时，所述量子点膜片左右两边或上下两边的折弯部向上插在所述空隙内包在所述导光板两边；
或所述量子点膜片左右两边和上下两边的折弯部向上插在所述空隙内包在所述导光板四边。
上述的液晶显示器的背光系统，所述量子点膜片由多个量子点均匀夹附在上层PET薄膜和下层PET(聚对苯二甲酸乙二醇酯)薄膜之间构成或由多个所述量子点均匀混合在PI柔性聚合物或络合物流体中干燥而成或由多个所述量子点与透明树脂溶剂混合后涂覆在PI(聚酰亚胺)柔性基底层上构成。
上述的液晶显示器的背光系统，所述量子点膜片的长度和/或宽度大于所述导光板长度。
上述的液晶显示器的背光系统，所述量子点膜片的长度和/或宽度大于所述光学膜片组的长度。
在上述技术方案中，本发明提供的液晶显示器的背光系统，与现有技术相比，通过在框架上设置有导光板，量子点膜片设置在导光板的上部或下部，光学膜片组设置在导光板或量子点膜片的上部，该量子点膜片裁切时左右两边留有余量，背光系统制造时将该余量加工成折弯部或左右两边和上下两边同时留有余量，背光系统制造时将该余量加工成折弯部。失效区域位于余量部位中，余量部位在背 光系统中先弯曲后弯折包附导光板或光学膜片组，使显示面板显示时整面具有较高效率的色域转换功能的量子点膜片。避免了量子点膜片裁切产生失效区对显示器画质的影响，而且结构简单，加工方便快捷。
上述技术特征可以各种适合的方式组合或由等效的技术特征来替代，只要能够达到本发明的目的。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。
图1为本申请的一个实施例中液晶显示器的背光系统中量子点膜片位于导光板上部时，量子点膜片两边的折弯部位于空隙处包在导光板两边的结构示意图。
图2为本申请的一个实施例中液晶显示器的背光系统中量子点膜片位于导光板上部时，量子点膜片两边的折弯部包在光学膜片组两边的结构示意图。
图3为本申请的一个实施例中液晶显示器的背光系统中量子点膜片位于导光板下部时，量子点膜片两边的折弯部包在导光板两边的结构示意图。
图4为本申请的一个实施例中液晶显示器的背光系统中量子点膜片左右两边加工有折弯部的结构示意图。
图5为本申请的一个实施例中液晶显示器的背光系统中量子点膜片左右两边加和上下两边同时工有折弯部的结构示意图。
图6为本申请的一个实施例中液晶显示器的背光系统中的量子点膜片构成形式一的结构示意图。
图7为本申请的一个实施例中液晶显示器的背光系统中的量子点膜片构成形式二的结构示意图。
图8为本申请的一个实施例中液晶显示器的背光系统中的量子点膜片构成形式三的结构示意图。
具体实施方式
下面将结合附图对本发明作进一步说明。
如图1-3所示，示意性地显示了具有量子点膜片的液晶显示器的背光系统，包括：框架4、量子点膜片2、导光板3和光学膜片组1；其中，在框架4上设置有导光板3用于将侧边光源转换成面光源，光学膜片组1包含但不限于棱镜片、 扩散片，量子点膜片2设置在导光板3的上部时光学膜片组1设置在量子点膜片2上部或量子点膜片2设置在导光板3的下部时光学膜片组1设置在导光板3上部。如图4所示，在一实施例中，量子点膜片2左右两边或者上下两边加工有折弯部21。如图5所示，在一实施例中，量子点膜片2左右两边和上下两边同时加工有折弯部21。
本发明中具有量子点膜片的背光系统使显示面板显示时整面具有较高效率的色域转换功能。避免了量子点膜片裁切产生失效区对显示器画质的影响，而且结构简单，加工方便快捷。
图1介绍了包含量子点膜的液晶显示器的背光系统(部分现有结构未示出)，背光系统设置在液晶显示器后方为显示器提供背光源。量子点膜片2通常使用在导光板3上方，然而量子点膜片2裁切时会导致裁切部位约1mm的区域失效，从而导致边缘区域出现色差或者色饱和度未能提升等光学品质下降。
在一个优选的实施例中，图1-3中框架4边缘与导光板3边缘之间留有空隙5。空隙5宽度以将折弯部21插入为宜，若是空隙5宽度过大折弯部21会出现晃动，空隙5宽度过小折弯部21将无法伸入。
在一个实施例中，图1中量子点膜片2设置在导光板3上部时，量子点膜片2左右两边或上下两边的折弯部21向下插在空隙5内包在导光板3两边；在一个实施例中，量子点膜片2左右两边和上下两边的折弯部21向下插在空隙5内包在导光板3四边；在一个实施例中，图2中量子点膜片2设置在导光板3上部时，量子点膜片2左右两边或上下两边的折弯部21向上包在光学膜片组1两边；在一个实施例中，量子点膜片2左右两边和上下两边的折弯部21包在光学膜片组1四边。在一些实施例制造时，该量子点膜片2裁切时左右两边或上下两边留有余量，失效区位于余量中，背光系统制造时将该余量左右两边或上下两边加工成折弯部21；在一些实施例制造时，左右两边和上下两边同时留有余量，失效区位于余量中，背光系统制造时将该余量左右两边和上下两边都加工成折弯部21。失效区域位于余量部位中，余量部位在背光系统中先弯曲后弯折包附导光板3或光学膜片组1，使显示面板显示时整面具有较高效率的色域转换功能的量子点膜片。避免了量子点膜片2裁切产生失效区对显示器画质的影响，而且结构简单，加工方便快捷。
在一个实施例中，图3中量子点膜片2设置在导光板3下部时，量子点膜片 2左右两边或上下两边的折弯部21向上插在空隙5内包在导光板3两边；在一个实施例中，量子点膜片2左右两边和上下两边的折弯部21向上插在空隙5内包在导光板3四边。在一个实施例制造时，该量子点膜片2裁切时左右两边或上下两边留有余量，失效区位于余量中，背光系统制造时将该余量左右两边或上下两边加工成折弯部21，在一个实施例制造时，左右两边和上下两边同时留有余量，失效区位于余量中，背光系统制造时将该余量左右两边和上下两边都加工成折弯部21。失效区域位于余量部位中，余量部位在背光系统中先弯曲后弯折包附导光板3或光学膜片组1，使显示面板显示时整面具有较高效率的色域转换功能的量子点膜片。避免了量子点膜片2裁切产生失效区对显示器画质的影响，而且结构简单，加工方便快捷。
在一个实施例中，如图6-8所示，量子点膜片2由三种构成形式：
形式一图6所示，由多个量子点22均匀夹附在上层PET(聚对苯二甲酸乙二醇酯)薄膜23和下层PET薄膜24之间构成；
形式二图7所示，由多个量子点22均匀混合在PI(聚酰亚胺)柔性聚合物或络合物流体中干燥而成；
形式三图8所示，由多个量子点22与透明树脂溶剂混合后涂覆在PI柔性基底层上。
进一步的，量子点膜片2的长度或/和宽度大于导光板3长度。
进一步的，量子点膜片2的长度或/和宽度大于光学膜片组1的长度。
具体使用时：
首先将量子点膜片2裁切时留有余量，失效区域位于余量部位中，余量部位在背光中弯折包附导光板3或者光学膜片组1，使显示面板显示时整面具有较高效率的色域转换功能的量子点膜片2。量子点膜片2余量可以在导光板3上表面包附导光板3/光学膜片组1；量子点膜片2余量可以位于导光板3下方包附导光板3。
量子点膜片2，其余量从两边和四边包附背光组件。
量子点膜片可以为：量子点22夹附粘接在两层PET薄膜中间，量子点22通过粘剂层固定形成在两层PET薄膜之间形成量子点膜片2。
量子点膜片可以为：量子点22均匀混合在PI等柔性聚合物/络合物中，其通过将量子点22均匀混合于PI等柔性聚合物流体状态中，然后这些聚合物通过 干燥/硬化等步骤形成量子点膜片2。
量子点膜片可以为：量子点22均匀混合于溶剂中并涂覆(coating)于PI等柔性基底上，溶剂可以为透明树脂(OC等)等，以形成量子点膜片2。
量子点膜片2上的余量部位弯折时可以为90度弯折，但优选不是完全成90度弯折，可以是通过先弯曲成一定弧度。其中弯曲半径与量子点膜片2厚度强相关，量子点膜片2厚度越薄，弯曲半径R可以越小。
量子点膜片2可以具有更薄的厚度而更容易弯折。
量子点膜片2弯折至背光侧部，量子点膜片2具有极薄的厚度，本发明背光系统适用于各种应用和尺寸的液晶显示器，例如用于TV(电视机)等大尺寸显示器/Notebook(笔记本)/Pad(平板电脑)等中尺寸显示器。
虽然已经参考优选实施例对本发明进行了描述，但在不脱离本发明的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本发明并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (19)

  1. 一种液晶显示器的背光系统，其中，包括：
    框架、量子点膜片、导光板和光学膜片组；其中，
    在所述框架上设置有所述导光板用于将侧边光源转换成面光源，所述量子点膜片设置在所述导光板的上部时所述光学膜片组设置在所述量子点膜片上部，或所述量子点膜片设置在所述导光板的下部时所述光学膜片组设置在所述导光板上部；
    所述量子点膜片左右两边和/或上下两边加工有折弯部。
  2. 根据权利要求1所述的液晶显示器的背光系统，其中，所述框架边缘与所述导光板边缘之间留有空隙。
  3. 根据权利要求1所述的液晶显示器的背光系统，其中，所述量子点膜片设置在所述导光板上部时，所述量子点膜片左右两边的所述折弯部向下插在所述空隙内包在所述导光板两边。
  4. 根据权利要求3所述的液晶显示器的背光系统，其中，所述量子点膜片设置在所述导光板上部时，所述量子点膜片上下两边的所述折弯部向下插在所述空隙内包在所述导光板两边。
  5. 根据权利要求4所述的液晶显示器的背光系统，其中，所述量子点膜片由多个量子点均匀夹附在上层PET薄膜和下层PET薄膜之间构成。
  6. 根据权利要求1所述的液晶显示器的背光系统，其中，所述量子点膜片设置在所述导光板上部时，所述量子点膜片左右两边的所述折弯部向上包在所述光学膜片组两边。
  7. 根据权利要求6所述的液晶显示器的背光系统，其中，所述量子点膜片设置在所述导光板上部时，所述量子点膜片上下两边的所述折弯部向上包在所述光学膜片组两边。
  8. 根据权利要求7所述的液晶显示器的背光系统，其中，所述量子点膜片的长度和/或宽度大于所述光学膜片组的长度。
  9. 根据权利要求1所述的液晶显示器的背光系统，其中，所述量子点膜片设置在所述导光板上部时，所述量子点膜片上下两边的所述折弯部向下插在所述空隙内包在所述导光板两边。
  10. 根据权利要求9所述的液晶显示器的背光系统，其中，所述量子点膜片由由多个所述量子点均匀混合在PI柔性聚合物或络合物流体中干燥而成。
  11. 根据权利要求1所述的液晶显示器的背光系统，其中，所述量子点膜片设置在所述导光板上部时，所述量子点膜片上下两边的所述折弯部向上包在所述光学膜片组两边。
  12. 根据权利要求11所述的液晶显示器的背光系统，其中，所述量子点膜片的长度和/或宽度大于所述光学膜片组的长度。
  13. 根据权利要求1所述的液晶显示器的背光系统，其中，所述量子点膜片设置在所述导光板下部时，所述量子点膜片左右两边的所述折弯部向上插在所述空隙内包在所述导光板两边。
  14. 根据权利要求13所述的液晶显示器的背光系统，其中，所述量子点膜片设置在所述导光板下部时，所述量子点膜片上下两边的所述折弯部向上插在所述空隙内包在所述导光板两边。
  15. 根据权利要求14所述的液晶显示器的背光系统，其中，所述量子点膜片由多个所述量子点与透明树脂溶剂混合后涂覆在PI柔性基底层上构成。
  16. 根据权利要求1所述的液晶显示器的背光系统，其中，所述量子点膜片设置在所述导光板下部时，所述量子点膜片上下两边的所述折弯部向上插在所述空隙内包在所述导光板两边。
  17. 根据权利要求1所述的液晶显示器的背光系统，其中，所述量子点膜片由多个量子点均匀夹附在上层PET薄膜和下层PET薄膜之间构成或由多个所述量子点均匀混合在PI柔性聚合物或络合物流体中干燥而成或由多个所述量子点与透明树脂溶剂混合后涂覆在PI柔性基底层上构成。
  18. 根据权利要求1所述的液晶显示器的背光系统，其中，所述量子点膜片的长度和/或宽度大于所述导光板长度。
  19. 根据权利要求1所述的液晶显示器的背光系统，其中，所述量子点膜片的长度和/或宽度大于所述光学膜片组的长度。
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