CN201739909U - 背光模组 - Google Patents

背光模组 Download PDF

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Publication number
CN201739909U
CN201739909U CN2010202355706U CN201020235570U CN201739909U CN 201739909 U CN201739909 U CN 201739909U CN 2010202355706 U CN2010202355706 U CN 2010202355706U CN 201020235570 U CN201020235570 U CN 201020235570U CN 201739909 U CN201739909 U CN 201739909U
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Prior art keywords
plate
lgp
reflecting
framework
light
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Expired - Fee Related
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CN2010202355706U
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English (en)
Inventor
何金民
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Shenzhen Futaihong Precision Industry Co Ltd
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Shenzhen Futaihong Precision Industry Co Ltd
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Priority to CN2010202355706U priority Critical patent/CN201739909U/zh
Priority to US12/902,230 priority patent/US20110317447A1/en
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Priority to JP2011003358U priority patent/JP3169962U/ja
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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
    • 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
    • G02B6/0033—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
    • G02B6/0051—Diffusing 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
    • G02B6/0033—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
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

本实用新型公开一种背光模组，其包括框架、导光板、反射板、扩散板、第一增光板、第二增光板及光源，该框架上涂设有用于反射光线的涂层，该反射板、导光板、扩散板、第一增光板及第二增光板依次平行装设于框架内，导光板上部分形成有用于反射光线的反射层，该光源设于框架内，且与导光板未形成有反射层的一侧相对，该导光板设有朝向反射板的光学网点。

Description

背光模组
技术领域
本实用新型涉及一种背光模组，尤其涉及一种用于液晶显示的背光模组。
背景技术
目前，在电子产品，如手机的显示屏一般采用发光二极管(light-emitting diode，LED)作为灯源，将该LED置于手机背光模组内，光源通过导光板及反光板转换成均远光面使显示屏发光，但是，导光板的底面或周缘会有漏光现象，漏掉的光线不能被反射回加以利用，会造成光源浪费，并使显示屏亮度相对地降低。
实用新型内容
有鉴于此，有必要提供一种具有较高光源利用率，并能提高发光度的背光模组。
一种背光模组，其包括框架、导光板、反射板、扩散板、第一增光板、第二增光板及光源，该框架上涂设有用于反射光线的涂层，该反射板、导光板、扩散板、第一增光板及第二增光板依次平行装设于框架内，导光板上部分形成有用于反射光线的反射层，该光源设于框架内，且与导光板未形成有反射层的一侧相对，该导光板设有朝向反射板的光学网点。
优选地，该导光板周侧面除光源位置均涂有反射材料，从而形成所述反射层。
优选地，该框架设有周壁，该周壁内侧面涂有反射材料，从而形成所述涂层。
优选地，该反射层涂料可为铝或银。
优选地，该导光板设有一底面，该光学网点设于该底面上。
优选地，该光学网点通过网点印刷或者精密刀具切削形成。
优选地，该导光板为亚克力材质制成。
相较现有的背光模组，所述背光模组的框架及导光板设有反射涂层，光线射到导光板或者框架的反射涂层上，重新反射回导光板内，再反射到散光板上加以利用，并提高了背光模组的发光度。
附图说明
图1是本实用新型较佳实施例的背光模组的平面示意图。
主要元件符号说明
  框架   10
  周壁   12
  涂层   14
  导光板   20
  底面   21
  周侧面   22
  光学网点   23
  反射层   24
  反射板   30
  扩散板   40
  扩散面   41
  第一增光板   50
  第二增光板   60
  光源   70
具体实施方式
请参阅图1，本实用新型的背光模组包括框架10、装设于框架10内的导光板20、反射板30、扩散板40、第一增光板50、第二增光板60及光源70。该光源70为点光源，例如LED，可以理解，该光源70也可以为线光源，例如冷阴极荧光灯。光源70发出的光线通过导光板20反射进入扩散板40，通过扩散板40扩散后射入第一增光板50及第二增光板60。
所述框架10可由具有高反射率的金属或塑料制成，或涂布有高反射率涂层的金属或塑料制成。本实施例中，该框架10设有周壁12，该周壁12内侧涂有具有高反射性能的涂层14，用于将导光板20侧面漏出的光线反射回导光板20内。
所述导光板20采用亚克力材料制成，其设有一底面21及周侧面22。该底面21采用网点印刷形成光学网点23，可以理解，该光学网点23可以通过精密刀具切削形成。该光学网点23将可将点光源70或线光源70的光均匀化，转换成均匀的光面。本实施例中，该周侧面22上除去点光源70(线光源)入光位置均涂有反射材料，形成一反射层24，用于将导光板20侧面漏出的光线反射回导光板20内。该反射层24涂料可为铝、银等反射材料。
所述反射板30装设于框架10底壁与该导光板20的底面21相对。
所述扩散板40、第一增光板50及第二增光板60平行设置并由下到上依次装设于导光板20的上方。该扩散板40设有一扩散面41。
所述光源70装设于该导光板20的未涂设有反射层24的侧部与框架10间。
所述背光模组的光源70光线从导光板20侧部射入，一部分光线通过光学网点23转换成均匀面光源，并通过反射板30将光线反射到扩散板40；还有一部分光线射到导光板20的反射层24上或者是框架10的涂层14上，重新反射回导光板20内，再反射到扩散板40上，高效率地利用了光源，并提高了背光模组的发光度。

Claims (7)

1.一种背光模组，其包括框架、导光板、反射板、扩散板、第一增光板、第二增光板及光源，其特征在于：该框架上涂设有用于反射光线的涂层，该反射板、导光板、扩散板、第一增光板及第二增光板依次平行装设于框架内，导光板上部分形成有用于反射光线的反射层，该光源设于框架内，且与导光板未形成有反射层的一侧相对，该导光板设有朝向反射板的光学网点。
2.如权利要求1所述的背光模组，其特征在于：该导光板周侧面除光源位置外均涂有反射材料，从而形成所述反射层。
3.如权利要求1所述的背光模组，其特征在于：该框架设有周壁，该周壁内侧面涂有反射材料，从而形成所述涂层。
4.如权利要求3所述的背光模组，其特征在于：该涂层涂料为铝或银。
5.如权利要求2述的背光模组，其特征在于：该导光板设有一底面，该光学网点设于该底面上。
6.如权利要求6述的背光模组，其特征在于：该光学网点通过网点印刷或者精密刀具切削形成。
7.如权利要求2述的背光模组，其特征在于：该导光板为亚克力材质制成。
CN2010202355706U 2010-06-24 2010-06-24 背光模组 Expired - Fee Related CN201739909U (zh)

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CN2010202355706U CN201739909U (zh) 2010-06-24 2010-06-24 背光模组
US12/902,230 US20110317447A1 (en) 2010-06-24 2010-10-12 Backlight module
JP2011003358U JP3169962U (ja) 2010-06-24 2011-06-15 バックライトモジュール

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104375324A (zh) * 2014-11-17 2015-02-25 深圳市华星光电技术有限公司 背光模组及具有该背光模组的显示器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2506625A (en) 2012-10-04 2014-04-09 Bae Systems Plc LCD backlight display

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US7001058B2 (en) * 2001-05-16 2006-02-21 Ben-Zion Inditsky Ultra-thin backlight
KR100638874B1 (ko) * 2005-07-06 2006-10-27 삼성전기주식회사 Ｌｅｄ 광원이 도광판에 삽입된 백라이트 장치의광원-도광판 구조 및 이를 포함하는 백라이트 장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104375324A (zh) * 2014-11-17 2015-02-25 深圳市华星光电技术有限公司 背光模组及具有该背光模组的显示器

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JP3169962U (ja) 2011-08-25
US20110317447A1 (en) 2011-12-29

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