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WO2005091696A1 - A frame structure for backlight module - Google Patents

A frame structure for backlight module Download PDF

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Publication number
WO2005091696A1
WO2005091696A1 PCT/CN2004/000272 CN2004000272W WO2005091696A1 WO 2005091696 A1 WO2005091696 A1 WO 2005091696A1 CN 2004000272 W CN2004000272 W CN 2004000272W WO 2005091696 A1 WO2005091696 A1 WO 2005091696A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixing frame
frame
backlight module
lower fixing
frame structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2004/000272
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English (en)
French (fr)
Inventor
Sihan Li
Yonghan Zhuang
Lihuang Lu
Dengkun Xiao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quanta Display Inc
Original Assignee
Quanta Display Inc
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
Publication date
Application filed by Quanta Display Inc filed Critical Quanta Display Inc
Priority to PCT/CN2004/000272 priority Critical patent/WO2005091696A1/zh
Publication of WO2005091696A1 publication Critical patent/WO2005091696A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/133608—Direct backlight including particular frames or supporting means

Definitions

  • the present invention relates to a frame structure for a backlight module, and more particularly to a frame structure for fixing a backlight module of a liquid crystal display. Background technique
  • liquid crystal displays are quite popular in current information or home appliance products, and because of their advantages of lower price and mature manufacturing technology, they are widely loved by consumers.
  • the display mode of the liquid crystal display is a passive mode, that is, its display must be illuminated by the light source of the backlight module. For this reason, a general liquid crystal display usually has a backlight module.
  • the liquid crystal display is formed with a very complicated and cumbersome structure.
  • a metal outer frame 5 or a plastic upper frame 1 (Upper Frame) and a metal or plastic frame are usually added.
  • the lower fixed frame 2 (Lower Frame) combines the liquid crystal panel 4 and the backlight module assembly, including a linear light source 6, a light source holder 9, a light guide plate 12, an upper diffuser plate 13, a light-enhancing film 14, a reflective plate 15, and a lower diffuser plate 16.
  • the fixing frame used for covering the backlight module and the liquid crystal panel including the metal outer frame 5, the upper fixing frame 1 and the lower fixing frame 2, etc., must have a good fixing function and convenience of combination.
  • the lower fixing frame 2 may be provided with a pin 11 to pass through the positioning holes 17 formed in the upper fixing frame 1, the light guide plate 12, the upper diffusion plate 13, the light enhancement film 14, the reflection plate 15, and the lower diffusion plate 16.
  • the backlight module fixing frame portion The fixing structure (fitting piece) of the upper fixing frame made of plastic is a straight hook 3 (see FIG.
  • the current backlight module uses an upper fixing frame A and a lower fixing frame B to combine the backlight module components together.
  • a plurality of mouth-shaped fastening elements a are arranged on the edge of the upper fixing frame A, and are provided to be fixed to each other with the buckle fastening elements b provided on the periphery of the lower fixing frame B.
  • the mouth-shaped fastening element a and the convex fastening element b also have a certain gap 0, which makes the fixed effect discounted.
  • the limiting direction can only be limited in the up and down direction, and the left and right directions must be wide because of the convenience of combination, so it cannot be used. Make effective restrictions in left and right directions. Therefore, the current backlight module fixed frame structure does not provide an effective positioning function.
  • the main object of the present invention is to provide a backlight module frame structure which can be positioned and fixed at the same time, so as to improve the good fixing function.
  • a secondary object of the present invention is to provide a backlight module frame structure that can reduce the number of fixed card slots, thereby saving the weight and cost of the frame.
  • a frame structure for a backlight module includes: a lower fixing frame, which is a component carrying the backlight module; an upper fixing frame, arranged on the lower fixing frame, and fixed to the lower fixing frame; A frame is adapted to fix the backlight module member; wherein the upper fixed frame has a fitting element that simultaneously restricts lateral movement and restricted longitudinal movement, and the lower fixed frame has a corresponding fitting member that cooperates with the fitting element.
  • FIG. 1 is an exploded view showing the structure of a conventional prior art liquid crystal display
  • FIG. 2 is a schematic view showing the structure of an upper fixed frame and a lower fixed frame of a conventional conventional backlight module
  • FIG. 3 is a schematic diagram showing a combination of an upper fixing frame and a lower fixing frame of a conventional existing backlight module
  • FIG. 4 is an exploded view of a backlight module showing a new frame structure according to the present invention
  • FIG. 5 is a structural view showing a specific embodiment of an upper fixed frame and a lower fixed frame of the present invention.
  • FIG. 6 is a schematic view showing an upper fixed frame and a lower fixed frame combined according to the present invention. detailed description
  • FIG. 4 is an exploded view showing a backlight module 20 using a new frame structure according to a preferred embodiment of the present invention.
  • the backlight module is mainly fixed by a plastic upper fixing frame 21, an upper diffusion plate 22, a light enhancement film 23, a lower diffusion plate 24, a light guide plate 25, a light source group and a metal or plastic lower fixing
  • the frame 26 is sequentially assembled from top to bottom; wherein the above-mentioned backlight module assembly is completely fixed by using an upper fixing frame and a lower fixing frame to achieve integration.
  • the upper fixing frame has a fitting element that simultaneously restricts both lateral movement and restriction of longitudinal movement.
  • the lower fixing frame has a corresponding fitting member that cooperates with the fitting element.
  • FIG. 5 shows an upper fixing frame and a lower fixing frame of the present invention.
  • the backlight module component can be precisely positioned and fixed.
  • FIG. 6 is a schematic structural view showing that the T-shaped hook element 30 of the upper fixing frame and the groove 31 of the lower fixing frame are fitted, as shown in the figure, the T-shaped hook element of the upper fixing frame can be easily fitted Into the groove of the lower fixing frame, and the interval after the fitting can be smaller than that in the prior art, so the restriction function is increased, compared with the prior art, the hook-shaped hook element or the straight-shaped hook element can only be used in As far as the vertical direction is fixed, the new frame structure of the present invention increases the function of fixing the left-right direction more than the existing technology.
  • the groove element of the T-shaped hook element of the upper fixing frame and the lower fixing frame of the present invention can be fixed in the up-down direction and added the function of fixing in the left-right direction to achieve the purpose of precise positioning.
  • the peripheral edge side of the upper fixing frame and the peripheral edge side of the lower fixing frame of the present invention do not need a plurality of fittings than the conventional technology to achieve the fixing purpose, so the new frame of the present invention
  • the structure can reduce the number of fittings more than the prior art. And reducing the number of fittings can reduce the weight of the frame, and also reduce the cost of making the mold when the mold is opened.
  • the fitting element and the corresponding fitting member of the present invention are not limited to the T-shaped hook element and the groove element described above, but may also take other forms.
  • the fitting element may be a Y-shaped hook member provided on the periphery of the upper fixing frame, and the corresponding fitting member may be a member corresponding to the shape of the Y-shaped hook provided on the lower fixing frame.
  • the fitting member may be an arrow-shaped hook member provided on the periphery of the upper fixing frame, and the corresponding fitting member may be an arrow and a hook provided on the lower fixing frame. Head shape hook shape corresponding member.
  • the backlight module of the present invention has better fixing means than the prior art, and can more stably combine the entire backlight module.
  • the new frame structure of the present invention may have a lower manufacturing cost than the prior art.

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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)

Description

一种用于背光模块的框架结构 技术领域 本发明涉及一种用于背光模块的框架结构， 特别是一种适用 于液晶显示器的背光模块固定用的框架结构。 背景技术
现今液晶显示器于目前的资讯或家电产品中， 相当普及， 由 于其具有价格较低廉且制造技术成熟的优点， 而广受消费者喜爱。
液晶显示器的显示方式是采被动方式， 也就是其显示必须有 背光模块光源的照射才行， 为此， 一般液晶显示器通常具有背光 模块。 而液晶显示器以极为复杂且繁琐的构造来形成， 如图 1 所 示，通常以一金属制的外框 5，或加上一塑料制上固定框 1 ( Upper Frame) 与一由金属或塑料制的下固定框 2 (Lower Frame) , 将液 晶面板 4与背光模块组件， 包括线性光源 6、 光源固定座 9、 导光 板 12、 上扩散板 13、 增光膜 14、 反射板 15、 下扩散板 16等整个 包覆其中， 而在包覆背光模块与液晶面板时所用的固定框架， 包 括金属制外框 5、上固定框 1以及下固定框 2等需具备良好的固定 功能及组合的便利性。 例如， 下固定框 2上可以设有插销 11， 以 穿过形成在上固定框 1、 导光板 12、 上扩散板 13、 增光膜 14、 反 射板 15、 下扩散板 16上的对位孔 17。 此外，在美国专利 No. 5729310揭示的背光模块装置中，在背 光模块固定框架部分采用了下述形式： 塑料制上固定框的固定结 构 （嵌合件） 为一字形卡钩 3 (见图 1 )， 而下固定框的结构配合 上固定框的一字形卡钩结构（嵌合件）为相对应的凹槽结构 10 (见 图 1 )， 使得背光模块能够固定良好。 但这种一字形卡钩的固定结 构为求组合的便利性都会留有一定的间隙， 因而会失去良好的固 定功能。
另外现行的背光模块， 如图 2所示， 利用一上固定框 A与下 固定框 B将背光模块元件组合在一起。 其中该上固定框 A边缘设 置有许多个口字型扣合元件 a并供与设置在下固定框 B周缘设置 的凸块扣合元件 b相互卡住而予以固定。 而由于该口字型扣合元 件 a与该凸块扣合元件 b因组装的便利性要求如同图 3所示也会 留有一定的间隙0， 使得固定的效果打了折扣。
因此， 不论是一字形卡钩结构或是口字型卡钩结构所能提供 的限制方向仅在上下方向做限制， 而左右方向则因为求组合的便 利性， 所以间隔都必须留大， 因而无法在左右方向作有效的限制。 因此， 现行的背光模块固定框架结构并未提供有效的定位功能。
有鉴于此， 本发明要提出一种可解决上述问题的方法。 发明内容
本发明的主要目的是提供一种可以同时定位及固定的背光模 块框架结构， 从而能够增进良好的固定功能。 本发明的次要目的是提供一种可以减少固定卡槽数的背光模 块框架结构， 从而能够节省框架的重量及成本。
为达成上述目的， 本发明所提出的一种用于背光模块的框架 结构包括： 一下固定框， 其为承载背光模块的构件； 一上固定框， 配置于该下固定框上， 与该下固定框配合固定该背光模块构件； 其中该上固定框具有同时兼具限制横向移动与限制纵向移动的嵌 合元件， 该下固定框具有配合该嵌合元件的对应嵌合构件。
利用上固定框的嵌合元件与下固定框的嵌合构件之间的配合 作用， 可将背光模块良好地固定及定位 附图说明
通过下面的说明并配合附图， 本发明的上述目的、 特点和优 点将更清晰明了。
图 1为显示一般现有技术的液晶显示器结构分解图； 图 2为显示一般现有背光模块上固定框与下固定框的结构示 意图；
图 3 为显示一般现有背光模块上固定框与下固定框组合后的 示意图；
图 4为显示依照本发明的新框架结构的背光模块分解图； 图 5 为显示本发明的上固定框与下固定框的一具体实施例结 构图； 及
图 6为显示本发明的上固定框与下固定框组合后的示意图。 具体实施方式
首先，请参阅图 4。 图 4为显示利用本发明的一优选实施例的 新框架结构的背光模块 20的构造分解图。 由图中显示， 背光模块 主要由一塑料制上固定框 21、 一上扩散板 22、 一增光膜 23、 一下 扩散板 24、 一导光板 25、 一光源组和一金属制或塑料制下固定框 26由上而下依序组合而成； 其中利用上固定框与下固定框将上述 背光模块组件整个固定起来而达到一体化。 该上固定框具有同时 兼具限制横向移动与限制纵向移动的嵌合元件， 该下固定框具有 配合该嵌合元件的对应嵌合构件， 嵌合元件和对应嵌合构件的具 体结构可参考图 5。图 5显示本发明的上固定框及下固定框的一具 体实施例结构示意图， 其中在上固定框周缘侧有多个 T型卡钩元 件 30， 作为嵌合元件， 而在下固定框的周缘侧有一对应于上述 T 型卡钩元件的凹槽 31， 作为对应嵌合构件。 而利用上固定框的 T 型卡钩元件 30配合下固定框的凹槽 31 即可将背光模块构件进行 精密定位并且固定。
图 6为显示本发明的上固定框的 T型卡钩元件 30与下固定框 的凹槽 31嵌合后的结构示意图， 如图所示， 上固定框 T型卡钩元 件能容易地嵌合入下固定框的凹槽内， 并且嵌合后的间隔可以比 现有技术还小， 因而增加限制功能， 比起现有技术利用口字型卡 钩元件或一字型卡钩元件仅能在上下方向固定而言， 本发明的新 框架结构比现有技术更增加左右方向固定的功能。 上述中， 本发明的上固定框的 T型卡钩元件与下固定框配合 的凹槽元件能够在上下方向固定并且新增左右方向固定的功能而 达到精密定位的目的。 并且， 由于其具备精密定位的功能， 因此 在本发明的上固定框周缘侧与下固定框周缘侧不需要比现有技术 所用的多个嵌合件来达到固定目的， 因此本发明的新框架结构比 现有技术能更减少嵌合件数目。 而减少嵌合件数目， 即可减少框 架重量， 并且也可在模具开模时减少制作模具的成本， 另外在实 际制作的注射成型时的温度及注射速度较易控制亦较容易饱和， 致使制造的不良率低可进而降低制造成本。 显然， 本发明的嵌合元件和对应嵌合构件并不局限于上面描 述的 T型卡钩元件和凹槽元件， 而是还可以采用其他形式。例如， 尽管未在图中示出， 嵌合元件可以是设在上固定框周缘的 Y型卡 钩构件， 而对应嵌合构件可以是设在下固定框上的与 Y型卡钩形 状对应的构件。 或者， 嵌合元件可以是设在上固定框周缘的箭头 形状的卡钩构件， 而对应嵌合构件可以是设在下固定框上的与箭 头形状卡钩形状对应的构件。
依照本发明的新框架结构背光模块至少具有下列优点：
1.本发明的背光模块具有比现有技术更好的固定手段， 可更 稳固地组合整个背光模块。
2.本发明的新框架结构可具有比现有技术较低的制作成本。 虽然本发明已通过上述的具体优选实施例以及附图加以详细 说明， 但所揭示的具体实施例仅用以说明本发明， 不用以限制本 发明的范围。 凡在本发明精神及范围内所做的各种变化、 改良均 属本发明的范围。

Claims

权 利 要 求
1. 一种用于背光模块的框架结构， 其包括： 一下固定框， 其 为承载背光模块的构件;'一上固定框， 配置于该下固定框上， 与 该下固定框配合固定该背光模块构件； 其中该上固定框具有同时 兼具限制横向移动与限制纵向移动的嵌合元件， 该下固定框具有 配合该嵌合元件的对应嵌合构件。
2. 如权利要求 1所述的框架结构， 其特征在于， 所述嵌合元 件为设在上固定框周缘的 T型卡钩构件。
3. 如权利要求 2所述的框架结构， 其特征在于， 所述对应嵌 · 合构件为设在下固定框上的凹沟。
4. 如权利要求 1所述的框架结构， 其特征在于， 所述嵌合元 件为设在上固定框周缘的 Y型卡钩构件。
5. 如权利要求 4所述的框架结构， 其特征在于， 所述对应嵌 合构件为设在下固定框上的与 Y型卡钩形状对应的构件。
6. 如权利要求 1所述的框架结构， 其特征在于， 所述嵌合元 件为设在上固定框周缘的箭头形状的卡钩构件。
7. 如权利要求 6所述的框架结构， 其特征在于， 所述对应嵌 合构件为设在下固定框上的与箭头形状卡钩形状对应的构件。
PCT/CN2004/000272 2004-03-29 2004-03-29 A frame structure for backlight module Ceased WO2005091696A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113156705A (zh) * 2021-04-28 2021-07-23 深圳市帝显电子有限公司 一种背光源安装框架

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729310A (en) * 1995-11-20 1998-03-17 Sharp Kabushiki Kaisha Lighting apparatus
JPH11167108A (ja) * 1997-12-03 1999-06-22 Matsushita Electric Ind Co Ltd 液晶表示モジュール
JP2000137219A (ja) * 1998-10-30 2000-05-16 Optrex Corp ケースに対する基板の固定装置
JP2000137208A (ja) * 1998-10-30 2000-05-16 Optrex Corp 液晶表示装置
CN1325406A (zh) * 1998-09-03 2001-12-05 阿斯特拉曾尼卡有限公司 EtO2C－CH2－(R)Cgl－Aze－Pab－OH的晶形
JP2002055329A (ja) * 2000-08-11 2002-02-20 Sony Corp 液晶表示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729310A (en) * 1995-11-20 1998-03-17 Sharp Kabushiki Kaisha Lighting apparatus
JPH11167108A (ja) * 1997-12-03 1999-06-22 Matsushita Electric Ind Co Ltd 液晶表示モジュール
CN1325406A (zh) * 1998-09-03 2001-12-05 阿斯特拉曾尼卡有限公司 EtO2C－CH2－(R)Cgl－Aze－Pab－OH的晶形
JP2000137219A (ja) * 1998-10-30 2000-05-16 Optrex Corp ケースに対する基板の固定装置
JP2000137208A (ja) * 1998-10-30 2000-05-16 Optrex Corp 液晶表示装置
JP2002055329A (ja) * 2000-08-11 2002-02-20 Sony Corp 液晶表示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113156705A (zh) * 2021-04-28 2021-07-23 深圳市帝显电子有限公司 一种背光源安装框架

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