WO2015062122A1 - 背光模组及用该背光模组的液晶显示装置 - Google Patents

背光模组及用该背光模组的液晶显示装置 Download PDF

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Publication number
WO2015062122A1
WO2015062122A1 PCT/CN2013/086912 CN2013086912W WO2015062122A1 WO 2015062122 A1 WO2015062122 A1 WO 2015062122A1 CN 2013086912 W CN2013086912 W CN 2013086912W WO 2015062122 A1 WO2015062122 A1 WO 2015062122A1
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WO
WIPO (PCT)
Prior art keywords
light guide
guide plate
plate
backlight module
disposed
Prior art date
Application number
PCT/CN2013/086912
Other languages
English (en)
French (fr)
Inventor
俞刚
萧宇均
陈仕祥
Original Assignee
深圳市华星光电技术有限公司
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Filing date
Publication date
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 JP2016526895A priority Critical patent/JP6494617B2/ja
Priority to US14/126,431 priority patent/US9280008B2/en
Priority to KR1020167009429A priority patent/KR101777528B1/ko
Priority to GB1604422.4A priority patent/GB2533510B/en
Publication of WO2015062122A1 publication Critical patent/WO2015062122A1/zh

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Classifications

    • 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
    • G02B6/0033—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
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—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
    • G02B6/0093—Means for protecting 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
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a backlight module and a display device using the same. Background
  • Liquid crystal display has many advantages such as thin body, power saving, and no radiation, and has been widely used.
  • Most of the liquid crystal display devices on the market are backlight type liquid crystal display devices, which include a liquid crystal display panel and a backlight module. The operation of the liquid crystal display panel, the liquid placed in the parallel glass substrate
  • the surface forming light source is supplied to the liquid crystal display panel.
  • the side-in backlight module is a light-emitting surface of the side of the LED light bar (LGP, Light Guide Plate) after the backlight LED strip (Light bar) is disposed on the side of the liquid crystal display panel.
  • the light guide plate is reflected and diffused, and is emitted from the light exit surface of the light guide plate, and then passed through the diaphragm group to form a surface light source for the liquid crystal display panel.
  • the back cover module 102 includes a light guide plate 104 disposed in the back plate 102 and disposed in the back plate 102.
  • the backlight module 100 includes a back plate 102 and a light guide plate 104 disposed in the back plate 102.
  • the backlight 106 is disposed between the bottom plate 122 of the back plate 102 and the light guide plate 104.
  • the light guide plate 104 is directly disposed on the reflective sheet 108.
  • the bottom surface 142 of the light guide plate 104 and the reflective sheet 108 are disposed. There is no gap to reduce the thickness of the liquid crystal display device, and the thickness of the liquid crystal display device is reduced.
  • the object of the present invention is to provide a backlight module, which reduces the thickness of the backlight module, reduces the manufacturing cost, and is advantageous for thinning, and avoids the friction between the reflective sheet and the light guide plate due to the surface roughness of the bottom plate, thereby causing the light guide plate to be affected. Damage, extend the life of the light guide.
  • Another object of the present invention is to provide a liquid crystal display device, which can reduce the thickness of the liquid crystal display device, reduce the manufacturing cost, and facilitate the thinning of the liquid crystal display device, and avoid the surface roughness between the reflective sheet and the light guide plate due to the surface roughness of the bottom plate. Friction causes damage to the light guide plate and prolongs the life of the light guide plate.
  • the present invention provides a backlight module, including: a backlight, a backlight disposed in the backplane, a backlight disposed in the backplane, and an optical film set disposed on the light guide plate, the back
  • the plate includes a bottom plate and a plurality of side plates vertically connected to the bottom plate.
  • the bottom plate is provided with an arc-shaped surface facing one side of the light guide plate, and an arc-shaped reflecting surface is formed on the curved surface.
  • the curved reflecting surface is formed on the curved surface by coating a reflective material.
  • the curved surface forms the curved counter-reflecting surface by a polishing process.
  • the light guide plate is directly supported on the bottom plate; the backlight is disposed on the side plate of the back plate.
  • the edge of the light guide plate is directly supported at a position where the bottom plate is located at an edge of the curved surface.
  • the invention also provides a backlight module, comprising: a back plate and a light guide plate disposed in the back plate. a backlight disposed in the backplane and an optical film set disposed on the light guide plate, the back plate includes a bottom plate and a plurality of side plates vertically connected to the bottom plate, wherein the bottom plate is curved toward a side of the light guide plate a curved reflecting surface formed on the curved surface;
  • the curved surface forms the curved reflecting surface by a polishing process.
  • the light guide plate is directly supported on the bottom plate; the backlight is disposed on a side plate of the back plate.
  • the edge of the light guide plate is directly supported at a position where the bottom plate is located at the edge of the curved surface.
  • the present invention also provides a liquid crystal display device, including: a backlight module, a plastic frame disposed above the backlight module, a liquid crystal display panel mounted in the plastic frame, and a front frame mounted on the liquid crystal display panel, the backlight module
  • the group includes a back plate, a light guide plate disposed in the back plate, a backlight disposed in the back plate, and an optical film set disposed on the light guide plate, wherein the back plate includes a bottom plate and a plurality of sides vertically connected to the bottom plate
  • the plate has a curved surface on a side of the bottom plate facing the light guide plate, and an arc-shaped reverse surface is formed on the curved surface.
  • the curved reflecting surface is formed on the curved surface by coating a reflective material.
  • the curved surface forms the curved reflecting surface by a buffing process.
  • the light guide plate is directly supported on the bottom plate; the backlight is disposed on a side plate of the back plate.
  • the edge of the light guide plate is directly supported at a position where the bottom plate is located at the edge of the curved surface.
  • the present invention has the following advantages:
  • the backlight module of the present invention and the liquid crystal display device using the same, the backlight module has a simple structure, and a curved surface with high reflection performance is disposed on a side of the bottom plate of the back plate facing the light guide plate.
  • the reflective surface replaces the existing reflective sheet disposed between the backplane bottom plate and the light guide plate, thereby reducing the thickness of the liquid crystal display device, reducing the manufacturing cost, and facilitating the thinning of the liquid crystal display device, and at the same time avoiding the bottom plate
  • the rough surface causes friction between the reflective sheet and the light guide plate to cause damage to the light guide plate, which prolongs the service life of the light guide plate.
  • FIG. 1 is a schematic structural view of a conventional liquid crystal display device
  • FIG. 2 is a schematic structural view of a backlight module of the present invention
  • FIG. 3 is a schematic structural view of a liquid crystal display device of the present invention. Specific travel mode
  • the present invention provides a backlight module, which has a simple structure, and includes: a back plate 2 , a light guide plate 4 disposed in the back plate 2 , and a backlight 6 disposed in the back plate 2 .
  • the optical film group 8 on the light guide plate 4, the back plate 2 includes a bottom plate 22 and a plurality of side plates 24 vertically connected to the bottom plate 22, wherein the bottom plate 22 has a curved surface facing one side of the light guide plate 4. 222.
  • An arc-shaped reflecting surface 224 is formed on the curved surface 222.
  • the edge of the light guide plate 4 is directly supported at a position where the bottom plate 22 is located at the edge of the curved surface 222.
  • the backlight 6 is disposed on the side plate 24 of the backboard 2 to facilitate thinning of the backlight module.
  • the curved reflecting surface 224 is coated on the curved surface 222 with a high reflective property.
  • the reflective material is formed or formed by polishing the curved surface 222.
  • the curved reflecting surface 224 is formed by coating a curved surface 222 with a reflective material having high reflective properties.
  • the curved reflecting surface 224 has better light reflecting performance, and can replace the light emitted from the backlight by the reflective sheet disposed between the backplane and the light guide plate, so that the light guide plate 4 is directly supported by the light reflecting plate 4
  • the bottom surface 22 of the curved reflecting surface 224 is arranged to avoid damage of the light guiding plate due to friction between the reflective sheet and the light guiding plate due to the rough surface of the existing bottom plate, thereby prolonging the service life of the light guiding plate, and
  • the curved reflecting surface 224 of some reflective sheets has an arc shape, which has better reflection effect, improves the light utilization efficiency of the backlight 6, and enhances the illumination intensity of the backlight module, and at the same time, replaces the curved reflecting surface 224 of the bottom plate 22
  • the reflective sheet reduces the thickness of the backlight, reduces the manufacturing cost, and facilitates the thinning of the backlight.
  • the present invention provides a liquid crystal display device, including: a backlight module 20 , a plastic frame 40 disposed above the backlight module 20 , a liquid crystal display panel 60 mounted in the plastic frame 40 , and a liquid crystal display panel
  • the backlight module 20 includes a back plate 2, a light guide plate 4 disposed in the back plate 2, a backlight 6 disposed in the back plate 2, and an optical film disposed on the light guide plate 4.
  • the back plate 2 includes a bottom plate 22 and a plurality of side plates 24 vertically connected to the bottom plate 22.
  • the bottom plate 22 has a curved surface 222 facing the light guide plate 4, and the curved surface 222 is formed on the curved surface 222.
  • a curved reflecting surface 224 is formed.
  • the edge of the light guide plate 4 is directly supported at a position where the bottom plate 22 is located at the edge of the curved surface 222.
  • the backlight 6 is disposed on the side plate 24 of the backboard 2 to facilitate thinning of the liquid crystal display device.
  • the curved inversion surface 224 is formed by coating a curved surface 222 with a reflective material having high reflective properties or by polishing the curved surface 222.
  • the curved reflecting surface 224 is formed by coating a curved surface 222 with a reflective material having high reflective properties.
  • the curved reflecting surface 224 has better light reflecting performance, and can replace the light emitted from the backlight by the reflective sheet disposed between the backplane and the light guide plate, so that the light guide plate 4 is directly supported by the light reflecting plate 4
  • the bottom surface 22 of the curved surface 222 thereby avoiding the damage of the light guide plate caused by the friction between the reflective sheet and the light guide plate due to the surface roughness of the existing bottom plate, prolonging the service life of the light guide plate, and
  • the curved reflecting surface 224 of the reflective sheet has an arc shape, and the reflecting effect is better, the light utilization efficiency of the backlight 6 is improved, the illumination intensity of the backlight module 20 is enhanced, and the display effect of the liquid crystal display device is enhanced;
  • the curved reflecting surface 224 of the bottom plate 22 is used instead of the reflecting sheet, which reduces the thickness of the backlight module 20, reduces the manufacturing cost, and facilitates the thinning of the liquid crystal display device.
  • the backlight module of the present invention and the liquid crystal display device using the same, the backlight module has a simple structure, and a reflective property is disposed on a side of the bottom plate of the back plate facing the light guide plate.
  • the curved reflecting surface replaces the existing reflective sheet disposed between the backplane bottom plate and the light guide plate, thereby reducing the thickness of the liquid crystal display device and reducing the manufacturing cost, thereby facilitating the thinning of the liquid crystal display device and avoiding the thinning of the liquid crystal display device. Since the rough surface of the bottom plate causes the friction between the reflective sheet and the light guide plate to be formed, various other corresponding changes and modifications can be made by those skilled in the art according to the technical solutions and technical ideas of the present invention. All such changes and modifications are intended to be included within the scope of the appended claims.

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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)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

本发明提供一种背光模组及用该背光模组的液晶显示装置，该背光模组包括：背板（2）、设于背板（2）内的导光板（4）、设于背板（2）内的背光源（6）及设于导光板（4）上的光学膜片组（8），该背板（2）包括底板（22）及垂直连接于底板（22）的数个侧板（24），该底板（22）朝向导光板（4）的一侧具有一弧形面（222），弧形面（222）上形成有弧形反射面（224）。本发明背光模组及用该背光模组的液晶显示装置，结构简单，在背板的底板朝向导光板的一侧设置一具有高反射性能的弧形反射面代替现有的反射片，降低液晶显示装置厚度，降低制作成本，有利于实现薄型化，同时避免由于反射片与导光板之间摩擦而造成导光板受损，延长导光板的使用寿命。

Description

本发明涉及液晶显示领域， 尤其涉及一种背光模组及用该背光模组的 显示装置。 背景;
液晶显示装置 （LCD， Liquid Crystal Display )具有机身薄、 省电、 无 辐射等众多优点， 得到了广泛的应用。 现有市场上的液晶显示装置大部分 为背光型液晶显示装置， 其包括液晶显示面板及背光模组 （backlight module ) 。 液晶显示面板的工作 , 片平行的玻璃基板当中放置液
¾分子， 两片玻璃基板中间有许多垂直和水平的细小电线
Figure imgf000003_0001
接形成面光源提供给液晶显示面板。 而侧入式背光模组是将背光源 LED 灯条（Light bar )设于液晶显示面板侧后 LED 灯条发出的 光线人导光.板 ( LGP ， Light Guide Plate ) -侧的入光面进入导光板， 经 反射和扩散后从导光板出光面射出， 再经由 j学膜片组， 以形成面光源提 供给液晶显 ~面板。
薄型化是现今液晶显示装置的发展趋势
薄型化液晶显示装置的结构示意图， 其包括
Figure imgf000003_0002
组 100上的胶框 300及设于胶框 300上的液晶显示面板 500， 所述背光模 组 100包括： 背板 102 , 设于背板 102 内的导光板 104、 设于背板 102 内 的背光源 106 及设于背板 102 的底板 122 与导光板 104之间的反射片 108, 所述导光板 104直接设置于反射片 108上， 该导光板. 104的底面 142 与反射片 108之间无间隙， 以降低液晶显示装置的厚度， 实现液晶显示装 置的薄型化。
然而， 当背板】02的底板 122朝向反.射片 108的表面不够光滑时 （如 有凸起） ， 其会将反射片顶起， 进 增大反射片 108与导光板 i04之间的 摩擦力， 容易导致导光板 104损坏。 发明内容
本发明的目的在于提供一种背光模组， 降低背光模组的厚度， 降低制 作成本， 有利于实现薄型化， 同时避免由于底板的表面粗糙导致反射片与 导光板之间摩擦而造成导光板受损， 延长导光板的使用寿命。
本发明的另一目的在于提供一种液晶显示装置， 降低液晶显示装置的 厚度， 降低制作成本， 有利于实现液晶显示装置的薄型化， 同时避免由于 底板的表面粗糙导致反射片与导光板之间摩擦而造成导光板受损， 延长导 光板的使用寿命。
为实现上述目的， 本发明提供一种背光模组， 包括： 背板、 设于背板 内的导光板 设于背板内的背光源及设于导光板上的光学膜片组， 所述背 板包括一底板及垂直连接于底板的数个侧板， 所述底板朝向导光板的一侧 设有一弧形面， 该弧形面上形成有一弧形反射面„
所述弧形反射面通过涂布反射材料的方式形成于弧形面上。
所述弧形面通过拋光处理形成所述弧形反.射面。
所述导光板直接支撑于所述底板上； 所述背光源设于所述背板的侧板 所述导光板的边缘直接支撑于底板位于弧形面边缘的位置上。
本发明还提供一种背光模组， 包括： 背板、 设于背板内的导光板。 设 于背板内的背光源及设于导光板上的光学膜片组， 所述背板包括一底板及 垂直连接于底板的数个側板， 所述底板朝向导光板的一侧设有一弧形面， 该弧形面上形成有一弧形反射面；
其中， 所述弧形面通过抛光处理形成该弧形反射面。
所述导光板直接支撑于所述底板上； 所述背光源设于所述背板的侧板 上。
所述导光板的边缘直接支撑于底板位于弧形面边缘的位置上。
本发明还提供一种液晶显示装置， 包括： 背光模组、 设于背光模组上 方的胶框、 安装于胶框内的液晶显示面板及安装于液晶显示面板上的前 框， 所述背光模组包括背板， 设于背板内的导光板、 设于背板内的背光源 及设于导光板上的光学膜片组， 所述背板包括一底板及垂直连接于底板的 数个侧板， 所述底板朝向导光板的一侧设有一弧形面， 该弧形面上形成有 一弧形反.射面。
所述弧形反射面通过涂布反射材料的方式形成于弧形面上。 所述.弧形面通过抛光处理形成所述弧形反射面。
所述导光板直接支撑于所述底板上； 所述背光源设于所述背板的侧板 上。
所述导光板的边缘直接支撑于底板位于弧形面边缘的位置上。
本发明的有益效果： 本发明背光模组及用该背光模组的液晶显示装 置， 所述背光模组结构简单， 在背板的底板朝向导光板的一侧设置一具有 高反射性能的弧形反射面代替现有的设于背板底板与导光板之间的反射 片， 降低了液晶显示装置厚度， 也降低了制作成本， 有利于实现液晶显示 装置的薄型化， 同时， 避免了由于底板的表面粗糙导致反射片与导光板之 间摩擦而造成导光板受损， 延长了导光板的使用寿命。
为了能更进一步了解本发明的特征以及技术内容， 请参阅以下有关本 发明的详细说明与附图， 然而附图仅提供参考与说明用， 并非用来对本发 明加以限制。 附图说明
下面结合附图， 通过对本发明的具体实施方式详细描述， 将使本发明 的技术方案及其它有益效果显而易见。
附图中，
图 1为现有液晶显示装置的结构示意图；
图 2为本发明背光模组的结构示意图；
图 3为本发明液晶显示装置的结构示意图。 具体实旅方式
为更进一步阐述本发明所釆取的技术手段及其效果， 以下结合本发明 的俛选实施例及其附图进行详细描述。
请参阅图 2 , 本发明提供一种背光模组， 其结构简单， 具体包括： 背 板 2、 设.于背板 2内的导光板 4、 设.于背板 2内的背光源 6及设于导光板 4 上的光学膜片组 8， 所述背板 2包括一底板 22及垂直连接于底板 22的数 个侧板 24, 所述底板 22朝向导光板 4的一侧具有一弧形面 222 , 该弧形 面 222上形成有一弧形反射面 224。 所述导光板 4的边缘直接支撑于底板 22位于弧形面 222边缘的位置上。
所述背光源 6设于所述背板 2的侧板 24上， 有利于实现背光模组的 薄型化。
所述弧形反射面 224通过在弧形面 222上涂布有一层具有高反射性能 的反射材料形成或通过对所述弧形面 222进行抛光处理形成。 优选的， 所 述弧形反射面 224通过在弧形面 222上涂布有一层具有高反射性能的反射 材料形成。 该弧形反射面 224具有较好的光反射性能， 可以代替现有的设 于背板底板与导光板之间的反射片反射背光源发出的光线， 使所述导光板 4直接支撑于具有该弧形反射面 224的底板 22上， 从而避免由于现有的底 板表面粗糙导致反射片与导光板之间的摩擦而造成导光板受损， 延长导光 板的使用寿命， 且， 由于用于代替现有的反射片的弧形反射面 224 呈弧 形， 其反射效果更好， 提高背光源 6 的光线利用率， 增强背光模组的光照 强度， 同时， 由于采用底板 22 的弧形反射面 224代替反射片， 降低了背 光^ 组厚度， 也降低了制作成本， 有利于实现背光^ 组的薄型化。
请参阅图 3， 本发明提供一种液晶显示装置， 包括： 背光模组 20、 设 于背光模组 20上方的胶框 40、 安装于胶框 40内的液晶显示面板 60及安 装于液晶显示面板 60上的前框 80, 所述背光模组 20包括背板 2、 设于背 板 2内的导光板 4、 设于背板 2内的背光源 6及.设于导光板 4上的光学膜 片组 8, 所述背板 2包括一底板 22及垂直连接于底板 22的数个侧板 24， 所述底板 22朝向导光板 4的一侧具有一弧形面 222， 该弧形面 222上形成 有一弧形反射面 224。 所述导光板 4的边缘直接支撑于底板 22位于弧形面 222边缘的位置上。
所述背光源 6设于所述背板 2的侧板 24上， 有利于实现液晶显示装 置的薄型化。
所述弧形反.射面 224通过在弧形面 222上涂布有一层具有高反射性能 的反射材料形成或通过对所述弧形面 222进行抛光处理形成。 优选的， 所 述弧形反射面 224通过在弧形面 222上涂布有一层具有高反射性能的反射 材料形成。 该弧形反射面 224具有较好的光反射性能， 可以代替现有的设 于背板底板与导光板之间的反射片反射背光源发出的光线， 使所述导光板 4直接支撑于具有该弧形面 222的底板 22上； 从而避免由于现有的底板的 表面粗糙导致反射片与导光板之间的摩擦而造成导光板受损， 延长导光板 的使用寿命， 且， 由于用于代替现有的反射片的弧形反射面 224呈弧形， 其反射效果更好， 提高背光源 6 的光线利用率， 增强背光模组 20 的光照 强度， 进而增强液晶显示装置的显示效果； 同时， 由于釆用底板 22 的弧 形反射面 224 代替反射片， 降低了背光模组 20 厚度， 也降低了制作成 本， 有利于实现液晶显示装置的薄型化。
综上所述， 本发明背光模组及用该背光模组的液晶显示装置， 所述背 光模组结构简单， 在背板的底板朝向导光板的一侧设置一具有高反射性能 的弧形反射面代替现有的设于背板底板与导光板之间的反射片， 降低了液 晶显示装置厚度， 也降低了制作成本， 有利于实现液晶显示装置的薄型 化， 同时， 避免了由于底板的表面粗糙导致反射片与导光板之间摩擦而造 上所述， 对 本 域的普通技 人员来说， 可以根据本发明的技术 方案和技术构思作出其他各种相应的改变和变形， 而所有这些改变和变形 都应属于本发明权利要求的保护范围。

Claims

权 利 要 求
】、 一种背光模组， 包括： 背板、 设于背板内的导光板、 设.于背板内 的背光源及设于导光板上的光学膜片组， 所述背板包括一底板及垂直连接 于底板的数个側板， 所述底板朝向导光板的一侧设有一弧形面， 该弧形面 上形成有一弧形反射面。 .M材 的方式形成于弧形面上。
3、 如权利要求 所述的背光模组， 其中， 所述弧形面通过抛光处理 形成该弧形反.射面。
4、 如权利要求 3 所述的背光模组， 其中， 所述导光板直接支撑于所 述.底板上； 所述背光源设于所述背板的侧板上。
5、 如权利要求 4 所述的背光模组， 其中， 所述导光板的边缘直接支 撑于底板位于弧形面边缘的位置上。
6、 一种背光模组， 包括： 背板、 设于背板内的导光板、 设.于背板内 的背光源及设于导光板上的光学膜片组， 所述背板包括一底板及垂直连接 于底板的数个侧板， 所述底板朝向导光板的一侧设有一弧形面， 该弧形面 上形成有一弧形反射面；
其中， 所述弧形面通过.抛光处理形成该弧形.反射面。
7、 如权利要求 6 所述的背光模组， 其中， 所述导光板直接支撑于所 述底板上； 所述背光源设于所述背板的侧板上。
8、 如权利要求 7 所述的背光模组， 其中， 所述导光板的边缘直接支 撑于底板位于弧形面边缘的位置上。
9、 一种液晶显示装置， 包括： 背光模组、 设于背光模组上方的胶 框、 安装于胶框内的液晶显示面板及安装于液晶显示面板上的前框， 所述 背光模组包括背板、 设于背板内的导光板、 设于背板内的背光源及设于导 光板上的光学膜片组， 所述背板包括一底板及垂直连接于底板的数个侧 板， 所述底板朝向导光板的一側设有一弧形面， 该弧形面上形成有一弧形 反射面。
10、 如权利要求 9所述的液晶显示装置， 其中， 所述弧形反射面通过 涂布反射材料的方式形成于弧形面上。
】1、 如权利要求 9 所述的液晶显示装置， 其中， 所述弧形面通过抛光 处理形成所述弧形反射面。 12、 如权利要求 11 所述的液晶显示装置， 其中， 所述导光板直接支 撑于所述底板上； 所述背光源设于所述背板的側板上。
13、 如权利要求 12 所述的液晶显示装置， 其中， 所迷导光板的边缘 直接支撑于底板位于弧形面边缘的位置上。
PCT/CN2013/086912 2013-10-30 2013-11-12 背光模组及用该背光模组的液晶显示装置 WO2015062122A1 (zh)

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