WO2014056263A1 - 背光模组 - Google Patents

背光模组 Download PDF

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Publication number
WO2014056263A1
WO2014056263A1 PCT/CN2012/083525 CN2012083525W WO2014056263A1 WO 2014056263 A1 WO2014056263 A1 WO 2014056263A1 CN 2012083525 W CN2012083525 W CN 2012083525W WO 2014056263 A1 WO2014056263 A1 WO 2014056263A1
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WO
WIPO (PCT)
Prior art keywords
back frame
backlight module
frame
engaging portion
side plate
Prior art date
Application number
PCT/CN2012/083525
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English (en)
French (fr)
Inventor
俞刚
顾毓波
杨流洋
Original Assignee
深圳市华星光电技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
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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 US13/704,230 priority Critical patent/US8905620B2/en
Publication of WO2014056263A1 publication Critical patent/WO2014056263A1/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
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps
    • 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

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a backlight module. Background technique
  • 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 panel and a backlight module.
  • the working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates, and the liquid crystal molecules are controlled to change direction by energization or not, and the light of the backlight module is refracted. Come out to produce the picture. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module needs to be used to display the image normally. Therefore, the backlight module becomes one of the key components of the liquid crystal display device.
  • the backlight module is divided into a side-in backlight module and a direct-lit backlight module according to different incident positions of the light source.
  • a light source such as a CCFL (Cold Cathode Fluorescent Lamp) or an LED (Light Emitting Diode) is disposed behind the liquid crystal panel to directly form a surface light source for the liquid crystal panel.
  • the side-lit backlight module has a backlight LED strip (Light bar) disposed on the edge of the back panel behind the liquid crystal panel, and the light emitted by the LED strip is incident on the light guide plate (LGP, Light Guide Plate) side. The surface enters the light guide plate, is reflected and diffused, and is emitted from the light exit surface of the light guide plate, and then passes through the optical film group to form a surface light source to be supplied to the liquid crystal panel.
  • LGP Light Guide Plate
  • the existing edge-lit backlight module includes: a back frame, a backlight disposed in the back frame, a reflective sheet disposed in the back frame, a light guide plate disposed on the reflective sheet, and an optical film set disposed on the light guide plate. And a plastic frame provided on the back frame.
  • the back frame and the plastic frame are usually fixed by screw locking. This assembly method requires other tools, which is inconvenient to install and disassemble, and it takes time and labor. Summary of the invention
  • the object of the present invention is to provide a backlight module, wherein the back frame and the plastic frame are assembled and fixed by means of snap-fit connection, the structure is simple, and the assembly and disassembly is convenient.
  • the present invention provides a backlight module, including: a back frame, a backlight disposed in the back frame, a reflective sheet disposed in the back frame, a light guide plate disposed on the reflective sheet, and a back frame
  • the plastic frame is provided with an engaging portion on the back frame, and the engaging portion of the plastic frame is provided with a locking portion The engaging portion is received and engaged in the engaging groove, and the plastic frame is fixedly connected to the back frame.
  • the back frame includes a bottom plate and a first side plate connected to the bottom plate.
  • the engaging portion is disposed on the first side plate.
  • the engaging portion is downwardly inclined from an outer surface adjacent to the free end of the first side plate, and has a sloped surface which is disposed toward the engaging groove.
  • the plastic frame includes a top plate and a second side plate connected to the top plate.
  • the engaging groove is disposed on the second side plate.
  • the heat sink disposed under the reflective sheet, a diffusion sheet disposed on the light guide plate, and a prism sheet disposed on the diffusion sheet.
  • the backlight is a linear light source.
  • the present invention further provides a backlight module, including: a back frame, a backlight disposed in the back frame, a reflective sheet disposed in the back frame, a light guide plate disposed on the reflective sheet, and a plastic frame disposed on the back frame
  • the back frame is provided with an engaging portion
  • the engaging portion of the plastic frame is provided with an engaging groove, and the engaging portion is received and engaged in the engaging groove, thereby fixing the plastic frame On the back frame;
  • the back frame includes a bottom plate and a first side plate connected to the bottom plate;
  • the engaging portion is disposed on the first side plate
  • the engaging portion is inclined downwardly from an outer surface adjacent to the free end of the first side plate, and has a sloped surface, the inclined surface being disposed toward the engaging groove;
  • the plastic frame includes a top plate and a second side plate connected to the top plate;
  • the engaging groove is disposed on the second side plate
  • the invention further includes a heat sink disposed under the reflective sheet, a diffusion sheet disposed on the light guide plate, and a prism sheet disposed on the diffusion sheet;
  • the backlight is a linear light source.
  • a backlight module provided by the present invention is provided with an engaging portion on a back frame, and an engaging groove that is engaged with the engaging portion is disposed on the plastic frame, and the plastic frame is fixed by a snap connection. It is installed on the back frame and has a simple structure and convenient disassembly and assembly, which can save time and control costs.
  • FIG. 1 is a schematic structural view of a backlight module of the present invention. detailed description
  • a backlight module includes: a back frame 10 , a backlight 20 disposed in the back frame 10 , a reflective sheet 30 disposed in the back frame 10 , and a light guide plate disposed on the reflective sheet 30 . 40.
  • the plastic frame 50 is disposed on the back frame 10.
  • An engaging portion 102 is disposed on the back frame 10, and the engaging portion 102 is provided with an engaging groove 502, and the engaging portion 102 is received and engaged in the engaging groove 502. Furthermore, the plastic frame 50 is fixedly connected to the back frame 10.
  • the back frame 10 includes a bottom plate 12 and a first side plate 14, and the engaging portion 102 is disposed on the first side plate 14.
  • the plastic frame 50 includes a top plate 52 and a second side plate.
  • the engaging groove 502 is disposed on the second side plate 54.
  • the engaging portion 102 is inclined downwardly from the outer surface of the free end of the first side plate 14 and has a slope 104 which is disposed toward the engaging groove 502.
  • the plastic frame 50 When assembling, the plastic frame 50 is directly pressed onto the back frame 10, so that the engaging portion 102 can be slid into the engaging groove 502, and the installation method is simple and saves time.
  • the free end of the second side plate 54 of the plastic frame 50 When disassembling, the free end of the second side plate 54 of the plastic frame 50 is pushed outwardly, and the plastic frame 50 is lifted upwards, so that the engaging portion 102 is slid out from the engaging groove 502, and the plastic frame 50 is further The back frame 10 is separated, the disassembly method is simple, and time is saved.
  • the backlight module of the present invention further includes a heat sink 60 disposed under the reflective sheet 30, a diffusion sheet 70 disposed on the light guide plate 40, and a prism sheet 80 disposed on the diffusion sheet 70.
  • the backlight 20 is a linear light source, and a part of the light emitted directly enters the light guide plate 40 through the light incident surface of the light guide plate 40, and the other portion is reflected by the reflective sheet 30 and enters the light guide plate 40.
  • the light is in the light guide plate 40. Propagation, simultaneous total reflection, refraction, etc., is further scattered by the diffusion sheet 70 and the prism sheet 80 to provide a uniformly distributed surface light source.
  • the backlight module provided by the present invention is provided with an engaging portion on the back frame, and an engaging groove matched with the engaging portion is disposed on the plastic frame, and the plastic frame is fixedly mounted by a snap connection.
  • the structure is simple, the disassembly and assembly is convenient, and the time can be effectively saved, thereby controlling the cost.

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

Abstract

一种背光模组，包括背框（10）、设于背框（10）内的背光源（20）和反射片（30）、设于反射片（30）上的导光板（40）、以及设于背框（10）上的胶框（50）。背框（10）上设有卡合部（102）。胶框（50）上对应卡合部（102）设有卡合槽（502）。卡合部（102）容置并卡合于卡合槽（502）内，进而将胶框（50）固定连接于背框（10）上。背光模组采用卡合连接的方式将胶框（50）固定安装于背框（10）上，结构简单，拆装方便，进而有效控制成本。

Description

背光模组 技术领域
本发明涉及液晶显示领域， 尤其涉及一种背光模组。 背景技术
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， 其包括液晶面板及背光模组 （ backlight module ) 。 液晶面板的工作原理是在两片平行的玻璃基板当中放置液晶分 子， 两片玻璃基板中间有许多垂直和水平的细小电线， 通过通电与否来控 制液晶分子改变方向， 将背光模组的光线折射出来产生画面。 由于液晶面 板本身不发光， 需要借由背光模组提供的光源来正常显示影像， 因此， 背 光模组成为液晶显示装置的关键组件之一。 背光模组依照光源入射位置的 不同分成侧入式背光模组与直下式背光模组两种。 直下式背光模组是将发 光光源例如 CCFL(Cold Cathode Fluorescent Lamp , 阴极萤光灯管）或 LED(Light Emitting Diode发光二极管)设置在液晶面板后方， 直接形成面 光源提供给液晶面板。 而侧入式背光模组是将背光源 LED 灯条（Light bar )设于液晶面板侧后方的背板边缘， LED 灯条发出的光线从导光板 ( LGP , Light Guide Plate )一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， 再经由光学膜片组， 以形成面光源提供给液晶面 板。
现有侧入式背光模组包括： 背框、 设于背框内的背光源、 设于背框内 的反射片、 设于反射片上的导光板、 设于导光板上的光学膜片组、 及设于 背框上的胶框。 背框与胶框通常采用螺丝锁合的方式固定， 该组装方式需 要使用其它工具， 安装及拆卸都不太方便， 耗费工时。 发明内容
本发明的目的在于提供一种背光模组， 其背框与胶框采用卡合连接的 方式组装固定， 结构简单， 拆装方便。
为实现上述目的， 本发明提供一种背光模组， 包括： 背框、 设于背框 内的背光源、 设于背框内的反射片、 设于反射片上的导光板、 及设于背框 上的胶框， 所述背框上设有卡合部， 所述胶框上对应该卡合部设有卡合 槽， 该卡合部容置并卡合于该卡合槽内， 进而将胶框固定连接于背框上。 所述背框包括底板及连接于底板的第一侧板。
所述卡合部设于所述第一侧板上。
所述卡合部由靠近第一侧板自由端的外表面向下倾斜设置， 其具有一 斜面， 该斜面朝向所述卡合槽设置。
所述胶框包括顶板及连接于顶板的第二侧板。
所述卡合槽设于所述第二侧板上。
还包括设于反射片下的散热片、 设于导光板上的扩散片及设于扩散片 上的棱镜片。
所述背光源为线性光源。
本发明还提供一种背光模组， 包括： 背框、 设于背框内的背光源、 设 于背框内的反射片、 设于反射片上的导光板、 及设于背框上的胶框， 所述 背框上设有卡合部， 所述胶框上对应该卡合部设有卡合槽， 该卡合部容置 并卡合于该卡合槽内， 进而将胶框固定连接于背框上；
其中， 所述背框包括底板及连接于底板的第一侧板；
其中， 所述卡合部设于所述第一侧板上；
其中， 所述卡合部由靠近第一侧板自由端的外表面向下倾斜设置， 其 具有一斜面， 该斜面朝向所述卡合槽设置；
其中， 所述胶框包括顶板及连接于顶板的第二侧板；
其中， 所述卡合槽设于所述第二侧板上；
还包括设于反射片下的散热片、 设于导光板上的扩散片及设于扩散片 上的棱镜片；
其中， 所述背光源为线性光源。
本发明的有益效果： 本发明提供的背光模组， 其通过在背框上设置卡 合部， 在胶框上设置与卡合部配合的卡合槽， 采用卡合连接的方式将胶框 固定安装于背框上， 其结构简单， 拆装方便， 可有效节约时间， 进而控制 成本。
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为本发明背光模组的结构示意图。 具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果， 以下结合本发明 的优选实施例及其附图进行详细描述。
参阅图 1 , 本发明提供一种背光模组， 包括： 背框 10、 设于背框 10 内的背光源 20、 设于背框 10 内的反射片 30、 设于反射片 30上的导光板 40、 及设于背框 10上的胶框 50。
所述背框 10上设有卡合部 102, 所述胶框 50上对应该卡合部 102设 有卡合槽 502, 该卡合部 102容置并卡合于该卡合槽 502 内， 进而将胶框 50固定连接于背框 10上。 所述背框 10包括底板 12和第一侧板 14, 所述 卡合部 102设于该第一侧板 14上。 所述胶框 50包括顶板 52和第二侧板 54, 所述卡合槽 502设于该第二侧板 54上。 本实施例中， 所述卡合部 102 由靠近第一侧板 14 自由端的外表面向下倾斜设置， 其具有一斜面 104, 该 斜面 104朝向所述卡合槽 502设置。 组装时， 胶框 50直接往背框 10上压 下， 即可使卡合部 102滑入卡合槽 502 内， 安装方法简单， 节约时间。 拆 卸时， 将胶框 50 的第二侧板 54 的自由端向外推开， 同时向上提起胶框 50, 即可使得卡合部 102从卡合槽 502 内滑出， 进而将胶框 50与背框 10 分离， 拆卸方法简单， 节约时间。
本发明背光模组还包括设于反射片 30下的散热片 60、 设于导光板 40 上的扩散片 70及设于扩散片 70上的棱镜片 80。 所述背光源 20为线性光 源， 其发出的光线， 一部分直接通过导光板 40 的入光面进入导光板 40 内， 另一部分通过反射片 30反射后进入导光板 40 内， 光线在导光板 40 内传播， 同时发生全反射、 折射等， 再经扩散片 70和棱镜片 80的进一步 散射， 进而提供分布均匀的面光源。
综上所述， 本发明提供的背光模组， 其通过在背框上设置卡合部， 在 胶框上设置与卡合部配合的卡合槽， 采用卡合连接的方式将胶框固定安装 于背框上， 其结构简单， 拆装方便， 可有效节约时间， 进而控制成本。
以上所述， 对于本领域的普通技术人员来说， 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
1、 一种背光模组， 包括： 背框、 设于背框内的背光源、 设于背框内 的反射片、 设于反射片上的导光板、 及设于背框上的胶框， 所述背框上设 有卡合部， 所述胶框上对应该卡合部设有卡合槽， 该卡合部容置并卡合于 该卡合槽内， 进而将胶框固定连接于背框上。
2、 如权利要求 1 所述的背光模组， 其中， 所述背框包括底板及连接 于底板的第一侧板。
3、 如权利要求 2 所述的背光模组， 其中， 所述卡合部设于所述第一 侧板上。
4、 如权利要求 3 所述的背光模组， 其中， 所述卡合部由靠近第一侧 板自由端的外表面向下倾斜设置， 其具有一斜面， 该斜面朝向所述卡合槽 设置。
5、 如权利要求 1 所述的背光模组， 其中， 所述胶框包括顶板及连接 于顶板的第二侧板。
6、 如权利要求 5 所述的背光模组， 其中， 所述卡合槽设于所述第二 侧板上。
7、 如权利要求 1 所述的背光模组， 还包括设于反射片下的散热片、 设于导光板上的扩散片及设于扩散片上的棱镜片。
8、 如权利要求 1所述的背光模组， 其中， 所述背光源为线性光源。
9、 一种背光模组， 包括： 背框、 设于背框内的背光源、 设于背框内 的反射片、 设于反射片上的导光板、 及设于背框上的胶框， 所述背框上设 有卡合部， 所述胶框上对应该卡合部设有卡合槽， 该卡合部容置并卡合于 该卡合槽内， 进而将胶框固定连接于背框上；
其中， 所述背框包括底板及连接于底板的第一侧板；
其中， 所述卡合部设于所述第一侧板上；
其中， 所述卡合部由靠近第一侧板自由端的外表面向下倾斜设置， 其 具有一斜面， 该斜面朝向所述卡合槽设置；
其中， 所述胶框包括顶板及连接于顶板的第二侧板；
其中， 所述卡合槽设于所述第二侧板上；
还包括设于反射片下的散热片、 设于导光板上的扩散片及设于扩散片 上的棱镜片；
其中， 所述背光源为线性光源。
PCT/CN2012/083525 2012-10-12 2012-10-26 背光模组 WO2014056263A1 (zh)

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US13/704,230 US8905620B2 (en) 2012-10-12 2012-10-26 Backlight module

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CN2012103874840A CN102865524A (zh) 2012-10-12 2012-10-12 背光模组
CN201210387484.0 2012-10-12

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