WO2014026408A1 - 背光模块以及其相关液晶显示设备 - Google Patents

背光模块以及其相关液晶显示设备 Download PDF

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Publication number
WO2014026408A1
WO2014026408A1 PCT/CN2012/080804 CN2012080804W WO2014026408A1 WO 2014026408 A1 WO2014026408 A1 WO 2014026408A1 CN 2012080804 W CN2012080804 W CN 2012080804W WO 2014026408 A1 WO2014026408 A1 WO 2014026408A1
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WO
WIPO (PCT)
Prior art keywords
optical film
light
liquid crystal
backlight module
crystal display
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PCT/CN2012/080804
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English (en)
French (fr)
Inventor
周革革
俞刚
王甲强
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深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/703,368 priority Critical patent/US20150160406A1/en
Publication of WO2014026408A1 publication Critical patent/WO2014026408A1/zh

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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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means

Definitions

  • the present invention relates to a backlight module and related liquid crystal display device, and more particularly to a backlight module that can have a narrow bezel and its associated liquid crystal display device.
  • Liquid crystal display (Liquid Crystal Display, LCD) is widely used in modern information equipment such as computers, mobile phones and personal digital assistants due to its advantages of lightness, thinness and low power consumption.
  • a liquid crystal display includes a liquid crystal display panel and a backlight module (backlight) Module), since the liquid crystal display panel itself does not emit light, the liquid crystal display must rely on the light source in the backlight module to emit light.
  • the light emitted by the light source in the backlight module passes through the liquid crystal of the liquid crystal display panel, and the light intensity transmitted to the user is adjusted by the steering of the liquid crystal to output an image.
  • the backlight module can be divided into lateral light (Side-light) Type) with direct light (Direct-light) Type) two.
  • the lateral light input means that the light source of the backlight module is placed on the side of the liquid crystal display, and the light is input from the side; and the direct light input means that the light source of the backlight module is placed under the liquid crystal display panel to enter the light from below; Thereby providing a backlight to the liquid crystal display panel.
  • FIG. 1 illustrates the structure of a conventional liquid crystal display device 100 .
  • the liquid crystal display device 100 includes a liquid crystal display panel 110, a front frame 120, and a backlight module 130.
  • the backlight module 130 includes a plastic frame 131, an optical film 132, a light guide plate 133, a light source 134, and a back plate 135.
  • the back plate 135 has a bearing surface for carrying the light source 134 by the bearing surface; the light guide plate 133 is located above the light source 134 for conducting light emitted from the light source 134; the optical film 132 is located above the light guide plate 133.
  • the plastic frame 131 is located above the optical film 132 for pressing the optical film 132 to fix the relative position of the optical film 132.
  • the liquid crystal display panel 110 is located on the plastic frame 131.
  • the light emitted by the backlight module 130 is used to adjust the intensity of the light transmitted to the user by turning the internal liquid crystal to output an image.
  • the front frame 120 is used to fix the relative position of the liquid crystal display panel 110.
  • the width of the four sides of the optical film 132 and the width of the plastic frame 131 are large enough to provide sufficient force to fix the optical film. The position of the piece 132.
  • liquid crystal display devices have become more and more beautiful in design, one of which is the design of a narrow bezel.
  • the width of the bezel 131 must be large enough, such a structure is not conducive to achievement.
  • the design of the narrow border since the width of the bezel 131 must be large enough, such a structure is not conducive to achievement. The design of the narrow border.
  • the technical problem to be solved by the present invention is to provide a backlight module and a related liquid crystal display device thereof, which achieve the purpose of narrow frame design by different combinations.
  • the present invention provides a backlight module for use in a liquid crystal display device, the backlight module comprising: a light source for emitting light; a back plate having a bearing surface and at least one side, the back The board carries the light source with the bearing surface; a light guide plate located above the light source for guiding light; and an optical film for processing light guided by the light guide plate, the optical film
  • the sheet is located above the light guide plate and has at least one bent portion, and the bent portion and the side edges of the back plate are joined to each other to fix the relative position of the optical film.
  • bent portion and the back plate are joined to each other by a double-sided tape to fix the relative position of the optical film.
  • bent portion and the backing plate are joined to each other by screws to fix the relative position of the optical film.
  • the back plate has four sides
  • the optical film has four bent portions, and the four bent portions are respectively connected to each other at the four sides to fix the optical film Relative position.
  • the four bent portions and the four back plates are mutually joined by a double-sided tape to fix the relative positions of the optical films.
  • the four bent portions and the four back plates are mutually joined by screws to fix the relative positions of the optical films.
  • the angle at which each of the bent portions is bent is 90 degrees.
  • the present invention also provides a liquid crystal display device, comprising: a liquid crystal display panel; and a backlight module, the backlight module comprising: a light source for emitting light; and a back plate having a bearing surface And at least one side, the back plate carries the light source with the bearing surface; a light guide plate disposed above the light source for guiding light; and an optical film for processing through the light guide plate Light behind the light, the optical film is located above the light guide plate, and has at least one bent portion, the bent portion and the side edge of the back plate are joined to each other to fix the optical film Relative position.
  • bent portion and the back plate are joined to each other by a double-sided tape to fix the relative position of the optical film.
  • bent portion and the backing plate are joined to each other by screws to fix the relative position of the optical film.
  • the back plate has four sides
  • the optical film has four bent portions, and the four bent portions are respectively connected to each other at the four sides to fix the optical film Relative position.
  • the four bent portions and the four back plates are mutually joined by a double-sided tape to fix the relative positions of the optical films.
  • the four bent portions and the four back plates are mutually joined by screws to fix the relative positions of the optical films.
  • the backlight module further comprises: a plastic frame located on the optical film, the plastic frame can be used to press the optical film and block light leakage.
  • liquid crystal display panel is located above the plastic frame.
  • the angle at which each bend is bent is 90 degrees.
  • the bent portion is joined to the side of the back sheet to fix the relative position of the optical film.
  • the invention does not need to rely on the plastic frame to press the optical film, the width of the four sides of the optical film, the width of the plastic frame, and even the width of the front frame can be narrow, so that the design of the narrow frame is achieved.
  • FIG. 1 illustrates the structure of a conventional liquid crystal display device.
  • FIG. 2 is a view showing the structure of an embodiment of a liquid crystal display device of the present invention.
  • FIG. 2 illustrates the structure of an embodiment of a liquid crystal display device 200 of the present invention.
  • the liquid crystal display device 200 includes a liquid crystal display panel 210, a front frame 220, and a backlight module 230.
  • the backlight module 230 includes a plastic frame 231, an optical film 232, a light guide plate 233, a light source 234, and a back plate 235.
  • the back plate 235 has a bearing surface and four side edges. Please note that since FIG. 2 is a side view, only two side edges are shown. However, in practical applications, the back plate 235 may actually have four sides. side.
  • the backing plate 235 is used to carry the light source 234 by the bearing surface.
  • Light source 234 is used to emit light.
  • the light guide plate 233 is located on the light source 234 for conducting light emitted from the light source 234.
  • the optical film 232 is disposed above the light guide plate 233 for processing light guided by the light guide plate 233.
  • the plastic frame 231 is located at the optical film 232. Above, it can be used to hold the optical film 232 and block some light leakage.
  • the optical film 232 further has four bent portions 2321 (Samely, since FIG. 2 is a side view, the optical film 232 only displays two bent portions 2321, however, in practical applications, the optical film 232 may have four bent portions 2321), and these bends
  • the portions 2321 are each indicated by a range indicated by a broken line.
  • the bent portion 2321 of the optical film 232 is used to fix the relative position of the optical film 232.
  • the four bent portions 2321 of the optical film 232 are respectively joined to the four side edges 2351 of the back plate 235, and thus the relative positions of the optical film 232 are fixed.
  • the bending angle of each bent portion 2321 is substantially 90 degrees, so that the bent portion 2321 can abut the side edge 2351 of the back plate 235.
  • the present invention does not limit the manner in which the bent portion and the side edge 2351 of the back plate 235 are joined.
  • the four bent portions 2321 of the optical film 232 can be adhered to the back plate 235 by double-sided tape.
  • the four sides 2351 are either passed through the bent portion 2321 of the optical film 232 and the side 2351 of the back plate 235 by screws to fix the two.
  • other joining methods are also within the scope of the invention.
  • the present invention does not limit the number of sides and the bent portion 2321, nor does it limit the number of joints; that is, the optical film 232 may have more or less bends 2321.
  • the front side 2351 of the back plate 235 portion and the partial bent portion 2321 of the optical film 232 may be joined to the back plate 235; as long as the back plate 235 and the optical film 232 can be bent. It is within the scope of the present invention that the 2321 and the side edges 2351 are joined to each other to fix the relative position of the optical film 232.
  • the liquid crystal display panel 210 is located on the plastic frame 231.
  • the light emitted by the backlight module 230 is used to adjust the intensity of the light transmitted to the user by the steering of the internal liquid crystal, thereby outputting an image.
  • the front frame 220 is used to fix the relative position of the liquid crystal display panel 210.
  • the plastic frame 231 is only used to assist the fixing of the optical film 232. Therefore, regardless of the width of the four sides of the optical film 232, the plastic frame 231 The width, even the width of the front frame 220, can have a high design flexibility; in other words, their width can be made narrower to meet the purpose of fixing the position of the optical film 232.
  • the optical film of the present invention has a bent portion and joins the bent portion to the side of the back sheet to fix the relative position of the optical film.
  • the invention does not need to rely on the plastic frame to press the optical film, the width of the four sides of the optical film, the width of the plastic frame, and even the width of the front frame can be narrow, so that the design of the narrow frame is achieved.

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

Abstract

提供了一种用于液晶显示设备（200）的背光模块（230），该背光模块（230）包含有：一光源（234），用来发出光线；一背板（235），具有一承载面以及至少一侧边（2351），该背板（235）以该承载面来承载该光源（234）；一导光板（233），位于该光源（234）之上，用来导光；以及一光学膜片（232），用来处理经过导光板（233）导光后的光线，该光学膜片（232）位于该导光板（233）之上，具有至少一折弯部（2321），该折弯部（2321）与该背板（235）的该侧边（2351）相互接合，以固定该光学膜片（232）的相对位置。由于无须仰赖胶框（231）压住光学膜片（232），胶框（231）仅仅用来辅助光学膜片（232）的固定，所以无论是光学膜片（232）四边的宽度、胶框（231）的宽度，甚至于前框（220）的宽度都可以较窄，如此达到了窄边框的设计目的。

Description

背光模块以及其相关液晶显示设备 技术领域
本发明涉及一种背光模块与其相关液晶显示设备，尤其涉及一种可具有较窄边框的背光模块与其相关液晶显示设备。
 背景技术
液晶显示器(Liquid Crystal Display，LCD)轻、薄、低耗电等优点，被广泛应用于计算机、移动电话及个人数字助理等现代化信息设备。一般来说，液晶显示器包含液晶显示面板及背光模块(backlight module)，由于液晶显示面板自身不会发光，因此液晶显示器必须仰赖背光模块内的光源来发出光线。由背光模块内的光源所发出的光线，经过液晶显示面板的液晶，藉由液晶的转向，来调整传递至使用者的光线强度，进而输出影像。
依照光源入射位置的不同，背光模块可以区分成侧向式入光(Side-light type)与直下式入光(Direct-light type)两种。侧向式入光代表背光模块的光源置放于液晶显示器的侧边，从侧边入光；而直下式入光则代表背光模块的光源置放于液晶显示面板的下方，从下方入光；藉以提供背光源至液晶显示面板。
请参阅图1，图1绘示现有液晶显示设备100的结构。液晶显示设备100包含液晶显示面板110、前框120以及背光模块130。背光模块130包含胶框131、光学膜片132、导光板133、光源134、以及背板135。
背板135具有一承载面，用来藉由所述承载面来承载光源134；导光板133位于光源之上134，用来传导自光源134发出的光线；光学膜片132位于导光板133之上，用来处理经过导光板133导光的光线；胶框131位于光学膜片132之上，用来压住光学膜片132，以固定光学膜片132的相对位置。
液晶显示面板110则位于胶框131之上，利用背光模块130发出的光线，藉由内部液晶的转向，来调整传递至使用者的光线强度，进而输出影像。
前框120用来固定液晶显示面板110相对位置。
然而，在这样的架构底下，由于胶框131必须用来压住光学膜片132，因此，光学膜片132四边的宽度与胶框131的宽度要够大，才能提供足够的力量来固定光学膜片132的位置。
但是，近年来，液晶显示设备设计地越来越美观，其中一个特点便是窄边框的设计，然而，前述的液晶显示设备100，由于胶框131的宽度必须够大，这样的结构不利于成就窄边框的设计方式。
因此，业界必须提出其他的方式，来解决这样的问题。
 技术问题
本发明所要解决的技术问题在于，提供一种背光模块与其相关液晶显示设备，藉由不同的组合方式，达到窄边框设计的目的。
 技术解决方案
本发明提供了一种背光模块，用来使用于一液晶显示设备，所述背光模块包含有：一光源，用来发出光线；一背板，具有一承载面以及至少一侧边，所述背板以所述承载面来承载所述光源；一导光板，位于所述光源之上，用来导光；以及一光学膜片，用来处理经过导光板导光后的光线，所述光学膜片位于所述导光板之上，具有至少一折弯部，所述折弯部与所述背板的所述侧边相互接合，以固定所述光学膜片的相对位置。
其中，所述折弯部与所述背板藉由双面胶相互接合，以固定所述光学膜片的相对位置。
或者，所述折弯部与所述背板藉由螺丝相互接合，以固定所述光学膜片的相对位置。
其中，所述背板具有四个侧边，以及所述光学膜片具有四个折弯部，所述四个折弯部分别于所述四个侧边相互连接，以固定所述光学膜片的相对位置。
此外，所述四个折弯部与所述四个背板皆藉由双面胶相互接合，以固定所述光学膜片的相对位置。
或者，所述四个折弯部与所述四个背板皆藉由螺丝相互接合，以固定所述光学膜片的相对位置。
进一步地，每一折弯部弯折的角度呈90度。
本发明还提供了一种液晶显示设备，所述液晶显示设备包含：一液晶显示面板；以及一背光模块，所述背光模块包含：一光源，用来发出光线；一背板，具有一承载面以及至少一侧边，所述背板以所述承载面来承载所述光源；一导光板，位于所述光源之上，用来导光；以及一光学膜片，用来处理经过导光板导光后的光线，所述光学膜片位于所述导光板之上，具有至少一折弯部，所述折弯部与所述背板的所述侧边相互接合，以固定所述光学膜片的相对位置。
其中，所述折弯部与所述背板藉由双面胶相互接合，以固定所述光学膜片的相对位置。
或者，所述折弯部与所述背板藉由螺丝相互接合，以固定所述光学膜片的相对位置。
其中，所述背板具有四个侧边，以及所述光学膜片具有四个折弯部，所述四个折弯部分别于所述四个侧边相互连接，以固定所述光学膜片的相对位置。
此外，所述四个折弯部与所述四个背板皆藉由双面胶相互接合，以固定所述光学膜片的相对位置。
或者，所述四个折弯部与所述四个背板皆藉由螺丝相互接合，以固定所述光学膜片的相对位置。
进一步地，所述背光模块另包含：一胶框，位于所述光学膜片之上，所述胶框可用来压住光学膜片以及阻挡漏光。
此外，所述液晶显示面板位于所述胶框之上。
再者，每一折弯部弯折的角度呈90度。
 有益效果
由于本发明光学膜片具有折弯部，并将折弯部与背板的侧边进行接合，以固定光学膜片的相对位置。换言之，本发明较无须仰赖胶框压住光学膜片，光学膜片四边的宽度、胶框的宽度，甚至于前框的宽度都可以较窄，如此便达到了窄边框的设计目的。
 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述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例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1绘示了现有液晶显示设备的结构。
图2绘示了本发明液晶显示设备一实施例的结构。
 本发明的最佳实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图2绘示本发明液晶显示设备200一实施例的结构。液晶显示设备200包含液晶显示面板210、前框220以及背光模块230。背光模块230包含胶框231、光学膜片232、导光板233、光源234以及背板235。
背板235具有一承载面以及四个侧边，在此请注意，由于图2为侧面图，因此仅显示两个侧边，然而，在实际应用中，背板235实际上可具有四个侧边。
背板235用来藉由所述承载面来承载光源234。光源234则用来发出光线。导光板233位于光源之上234，用来传导自光源234发出的光线；光学膜片232位于导光板233之上，用来处理经过导光板233导光的光线；胶框231位于光学膜片232之上，可用来压住光学膜片232，并且挡掉一些漏光。
于本实施例中，光学膜片232另具有四个折弯部2321 (相同地，由于图2为侧面图，因此光学膜片232仅显示两个折弯部2321，然而，在实际应用中，光学膜片232实可具有四个折弯部2321)，这些折弯部2321均用虚线所标示的范围表示。
在此请注意，光学膜片232的折弯部2321用来固定光学膜片232的相对位置。于本实施例中，光学膜片232的四个折弯部2321分别与背板235的四个侧边2351相互接合，因此，光学膜片232的相对位置便被固定了。优选地，每一折弯部2321的弯折角度大致呈90度，使得折弯部2321可以紧贴背板235的侧边2351。在此请注意，本发明并未限制折弯部与背板235的侧边2351的接合方式，举例来说，光学膜片232的四个折弯部2321可通过双面胶黏合于背板235的四个侧边2351，或者是利用螺丝通过光学膜片232的折弯部2321与背板235的侧边2351以将两者接合固定。然而，其他的接合方式亦属本发明的范畴。
此外，在此请注意，本发明并未限制侧边与折弯部2321的数量，亦并未限制接合的数量；也就是说，光学膜片232可具有更多或整少的折弯部2321以与背板235相互接合；或者，本发明亦可只接合背板235部分的侧边2351与光学膜片232的部分折弯部2321；只要背板235与光学膜片232能以折弯部2321与侧边2351相互接合而固定光学膜片232的相对位置，便属本发明的范畴。
液晶显示面板210则位于胶框231之上，利用背光模块230发出的光线，藉由内部液晶的转向，来调整传递至使用者的光线强度，进而输出影像。
前框220则用来固定所述液晶显示面板210相对位置。
在此请注意，由于本发明无须仰赖胶框231来压住光学膜片232，胶框231仅仅用来辅助光学膜片232的固定，因此，无论是光学膜片232四边的宽度、胶框231的宽度，甚至于前框220的宽度，都可以具有较高的设计弹性；换言之，它们的宽度都可以做得较窄，以可满足固定光学膜片232位置的目的。
相较于现有技术，本发明的光学膜片具有折弯部，并将折弯部与背板的侧边进行接合，以固定光学膜片的相对位置。换言之，本发明较无须仰赖胶框压住光学膜片，光学膜片四边的宽度、胶框的宽度，甚至于前框的宽度都可以较窄，如此便达到了窄边框的设计目的。
综上所述，虽然本发明已以较佳实施例揭露如上，但该较佳实施例并非用以限制本发明，该领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
 本发明的实施方式
工业实用性
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Claims (10)

  1. 一种背光模块，用来使用于一液晶显示设备，所述背光模块包含：
    一光源，用来发出光线；
    一背板，具有一承载面以及至少一侧边，所述背板以所述承载面来承载所述光源；
    一导光板，位于所述光源之上，用来导光；以及
    一光学膜片，用来处理经过导光板导光后的光线，所述光学膜片位于所述导光板之上，具有至少一折弯部，所述折弯部与所述背板的所述侧边相互接合，以固定所述光学膜片的相对位置。
  2. 如权利要求1所述的背光模块，其中所述折弯部与所述背板藉由双面胶或螺丝相互接合，以固定所述光学膜片的相对位置。
  3. 如权利要求1所述的背光模块，其中所述背板具有四个侧边，以及所述光学膜片具有四个折弯部，所述四个折弯部分别于所述四个侧边相互连接，以固定所述光学膜片的相对位置。
  4. 如权利要求3所述的背光模块，其中所述四个折弯部与所述背板皆通过双面胶或螺丝相互接合，以固定所述光学膜片的相对位置。
  5. 如权利要求3所述的背光模块，其中每一折弯部弯折的角度呈90度。
  6. 一种液晶显示设备，包含：
    一液晶显示面板；以及
    一背光模块，所述背光模块包含：
    一光源，用来发出光线；
    一背板，具有一承载面以及至少一侧边，所述背板以所述承载面来承载所述光源；
    一导光板，位于所述光源之上，用来导光；以及
    一光学膜片，用来处理经过导光板导光后的光线，所述光学膜片位于所述导光板之上，具有至少一折弯部，所述折弯部与所述背板的所述侧边相互接合，以固定所述光学膜片的相对位置。
  7. 如权利要求6所述液晶显示设备，其中所述折弯部与所述背板藉由双面胶或螺丝相互接合，以固定所述光学膜片的相对位置。
  8. 如权利要求6所述的液晶显示设备，其中所述背板具有四个侧边，以及所述光学膜片具有四个折弯部，所述四个折弯部分别于所述四个侧边相互连接，以固定所述光学膜片的相对位置。
  9. 如权利要求7所述的液晶显示设备，其中每一折弯部弯折的角度呈90度。
  10. 如权利要求6所述的液晶显示设备，其中所述背光模块另包含：一胶框，位于所述光学膜片之上，所述胶框可用来压住光学膜片以及阻挡漏光。
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