WO2017113254A1 - 直下式背光模组 - Google Patents

直下式背光模组 Download PDF

Info

Publication number
WO2017113254A1
WO2017113254A1 PCT/CN2015/099996 CN2015099996W WO2017113254A1 WO 2017113254 A1 WO2017113254 A1 WO 2017113254A1 CN 2015099996 W CN2015099996 W CN 2015099996W WO 2017113254 A1 WO2017113254 A1 WO 2017113254A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
light
backlight module
curved surface
light source
Prior art date
Application number
PCT/CN2015/099996
Other languages
English (en)
French (fr)
Inventor
周肇梅
Original Assignee
周肇梅
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 周肇梅 filed Critical 周肇梅
Priority to PCT/CN2015/099996 priority Critical patent/WO2017113254A1/zh
Publication of WO2017113254A1 publication Critical patent/WO2017113254A1/zh

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation

Definitions

  • the utility model relates to a display device, in particular to a direct type backlight module in a display device.
  • the backlight module is one of the key components of the liquid crystal display panel. Its function is to supply sufficient light and uniform light source to display images properly.
  • the structure of the direct-lit backlight module is that the light source (usually CCF1 or LED) after being energized is reflected by the bottom reflector, so that the emitted light is directed upward, and the light is scattered and atomized by the diffusion of the lens.
  • the light is evenly distributed on the surface of the backlight module.
  • the point and line light sources can be converted into a uniform surface light source.
  • the brightness and uniformity of the surface light source are further improved, and the diffusion and emission are distributed in the light-emitting region.
  • the backlight module that replaces the traditional light source with high-power LED light strips is more and more widely used.
  • high-power LEDs are used in direct-lit backlights, and because of their large power, they are used in a small amount. However, due to the large normal light intensity of the high power LED, the uniformity of light transmission in the lens is affected.
  • the present invention provides a direct type backlight module.
  • the utility model provides a direct type backlight module, which comprises a lens.
  • the bottom of the lens is provided with a light source, and the top of the lens is provided with a light transmissive double injection part.
  • the light source is a light emitting diode.
  • the bottom of the lens is provided with a cavity, and the light source is disposed in the cavity.
  • the cavity is provided with a curved surface.
  • the curved surface includes a first side curved surface and a second side curved surface, and the first side curved surface and the second side curved surface intersect.
  • the angle between the first side curved surface and the second side curved surface is an acute angle.
  • the first side curved surface and the second side curved surface pair Call the setting.
  • the utility model has the beneficial effects that, by the above scheme, the uniformity of transmission of light in the lens can be enhanced by the double injection molding portion.
  • FIG. 1 is a schematic structural view of a direct type backlight module of the present invention.
  • Fig. 1 The reference numerals in Fig. 1 are: lens 1; double injection part 2; light source 3; light 4.
  • a direct type backlight module includes a lens 1 , a bottom of the lens 1 is provided with a light source 3 , and a top of the lens 1 is provided with a light transmissive double injection part 2 , and the light source 3 The emitted light 4 is transmitted through the lens 1 and is refracted at the double injection portion 2 to improve the uniformity of transmission of the light 4 within the lens 1.
  • the light source 3 is a light emitting diode.
  • the bottom of the lens 1 is provided with a cavity, and the light source 3 is disposed in the cavity.
  • the cavity is provided with a curved surface.
  • the curved surface includes a first side curved surface and a second side curved surface, and the first side curved surface and the second side curved surface intersect.
  • the angle between the first side curved surface and the second side curved surface is an acute angle.
  • the first side curved surface and the second side curved surface are symmetrically disposed.
  • the utility model provides a direct type backlight module, which mainly changes the optical parameters (transmittance, haze, etc.) of the material in the local area and direction of the lens 1 through the double injection part 2, thereby changing the area and the direction.
  • the illumination intensity and the purpose of optimizing the overall light field distribution curve of the light source 3 can reduce the accuracy requirements and assembly precision requirements of the current profile curve matched with the high power LED.

Abstract

一种直下式背光模组，包括透镜（1），所述透镜（1）的底部设有光源（3），所述透镜（1）的顶部设有透光的双重注塑部（2）。通过双重注塑部（2）来加强光线在透镜（1）内透射的均匀性。

Description

直下式背光模组 技术领域
本实用新型涉及显示装置，尤其涉及显示装置中的一种直下式背光模组。
背景技术
背光模组为液晶显示器面板的关键零组件之一，功能在于供应充足的亮度与分布均匀的光源，使其能正常显示影像。
一般直下式背光模组的结构为利用通电后的灯源(一般为CCFl或是LED)，其经过底面反射罩反射，使所发出的光向上直射，经过透镜的扩散作用将光线散射雾化，使光线均匀分布于背光模组的表面，利用该原理，就可以使点、线光源转换为均匀的面光源。再经过扩散片和其他膜片的作用，进一步提高面光源的亮度与均匀度，扩散射出分布于发光区域内。目前随着LED技术的广泛应用，以大功率LED灯条取代传统光源方式的背光模组应用越来越广泛。
目前大功率LED应用于直下式背光时，由于其功率较大，所以使用的数量较少。但是由于大功率LED的法向发光强度极大，影响了光线在透镜内透射的均匀性。
发明内容
为了解决现有技术中的问题，本实用新型提供了一种直下式背光模组。
本实用新型提供了一种直下式背光模组，包括透镜，所述透镜的底部设有光源，所述透镜的顶部设有透光的双重注塑部。
作为本实用新型的进一步改进，所述光源为发光二极管。
作为本实用新型的进一步改进，所述透镜的底部设有腔体，所述光源设置在所述腔体内。
作为本实用新型的进一步改进，所述腔体上设有曲面。
作为本实用新型的进一步改进，所述曲面包括第一侧曲面和第二侧曲面，所述第一侧曲面和第二侧曲面相交。
作为本实用新型的进一步改进，所述第一侧曲面和第二侧曲面的夹角为锐角。
作为本实用新型的进一步改进，所述第一侧曲面和第二侧曲面对 称设置。
本实用新型的有益效果是：通过上述方案，可通过双重注塑部来加强光线在透镜内透射的均匀性。
附图说明
图1是本实用新型一种直下式背光模组的结构示意图。
具体实施方式
下面结合附图说明及具体实施方式对本实用新型进一步说明。
图1中的附图标号为：透镜1；双重注塑部2；光源3；光线4。
如图1所示，一种直下式背光模组，包括透镜1，所述透镜1的底部设有光源3，所述透镜1的顶部设有透光的双重注塑部2，所述光源3所发出的光线4经过所述透镜1的透射，并在双重注塑部2产生折射，以提高光线4在透镜1内透射的均匀性。
如图1所示，所述光源3为发光二极管。
如图1所示，所述透镜1的底部设有腔体，所述光源3设置在所述腔体内。
如图1所示，所述腔体上设有曲面。
如图1所示，所述曲面包括第一侧曲面和第二侧曲面，所述第一侧曲面和第二侧曲面相交。
如图1所示，所述第一侧曲面和第二侧曲面的夹角为锐角。
如图1所示，所述第一侧曲面和第二侧曲面对称设置。
本实用新型提供的一种直下式背光模组，主要通过双重注塑部2，改变透镜1局部区域和方向上材料的光学参数(透过率，雾度等)，从而达到改变该区域和该方向发光强度，优化光源3整体光场分布曲线的目的，可以降低目前与大功率LED配合的外形曲线精度要求和装配精度要求。
以上内容是结合具体的优选实施方式对本实用新型所作的进一步详细说明，不能认定本实用新型的具体实施只局限于这些说明。对于本实用新型所属技术领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本实用新型的保护范围。

Claims (1)

  1. 一种直下式背光模组，其特征在于：包括透镜，所述透镜的底部设有光源，所述透镜的顶部设有透光的双重注塑部，所述光源为发光二极管，所述透镜的底部设有腔体，所述光源设置在所述腔体内，所述腔体上设有曲面。
PCT/CN2015/099996 2015-12-30 2015-12-30 直下式背光模组 WO2017113254A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/099996 WO2017113254A1 (zh) 2015-12-30 2015-12-30 直下式背光模组

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/099996 WO2017113254A1 (zh) 2015-12-30 2015-12-30 直下式背光模组

Publications (1)

Publication Number Publication Date
WO2017113254A1 true WO2017113254A1 (zh) 2017-07-06

Family

ID=59224089

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/099996 WO2017113254A1 (zh) 2015-12-30 2015-12-30 直下式背光模组

Country Status (1)

Country Link
WO (1) WO2017113254A1 (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070058271A1 (en) * 2005-09-14 2007-03-15 Fujinon Corporation Lens barrel
CN101420008A (zh) * 2008-11-17 2009-04-29 深圳市深华龙科技实业有限公司 Led二次光学透镜装置
CN101533112A (zh) * 2008-11-28 2009-09-16 杭州照相机械研究所 自由曲面光学透镜
CN202392611U (zh) * 2011-12-16 2012-08-22 深圳Tcl新技术有限公司 大功率led及led背光模组
CN204005861U (zh) * 2014-07-30 2014-12-10 厦门通士达照明有限公司 一种防缩水led球泡灯散热器结构
CN104373897A (zh) * 2014-11-25 2015-02-25 创维液晶器件(深圳)有限公司 一种led二次透镜和led灯

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070058271A1 (en) * 2005-09-14 2007-03-15 Fujinon Corporation Lens barrel
CN101420008A (zh) * 2008-11-17 2009-04-29 深圳市深华龙科技实业有限公司 Led二次光学透镜装置
CN101533112A (zh) * 2008-11-28 2009-09-16 杭州照相机械研究所 自由曲面光学透镜
CN202392611U (zh) * 2011-12-16 2012-08-22 深圳Tcl新技术有限公司 大功率led及led背光模组
CN204005861U (zh) * 2014-07-30 2014-12-10 厦门通士达照明有限公司 一种防缩水led球泡灯散热器结构
CN104373897A (zh) * 2014-11-25 2015-02-25 创维液晶器件(深圳)有限公司 一种led二次透镜和led灯

Similar Documents

Publication Publication Date Title
US10241255B2 (en) Backlight module and liquid crystal display
CN105444044A (zh) 一种发光二极管led发光器件、背光模组及显示面板
TW201400879A (zh) 背光模組及其光學透鏡
TW201443368A (zh) 光學透鏡
CN202253374U (zh) 光学膜片、直下式背光模组和显示装置
WO2016058332A1 (zh) 背光模组及显示装置
KR20110039807A (ko) 액정디스플레이용 복합시트 및 이를 이용한 백라이트 유닛
CN204314573U (zh) 背光模组
TWI566008B (zh) 擴散片及背光模組
US20160341872A1 (en) Light guide plate, back light module and liquid crystal display device
CN106959554B (zh) 一种反射式散光透镜、背光模组和液晶显示装置
WO2017113254A1 (zh) 直下式背光模组
WO2017113250A1 (zh) 一种超薄背光模组
WO2017113253A1 (zh) 一种液晶显示器的背光模组
WO2017113249A1 (zh) 背光模组
WO2017113251A1 (zh) 一种超薄直下式背光模组
TWI550321B (zh) 量子管、背光模組及液晶顯示裝置
CN203421626U (zh) 折反射出光装置
CN102588803A (zh) 平板型led灯
CN203784828U (zh) 一种直下式背光用光学透镜和液晶显示背光屏
CN206112676U (zh) 一种led背光模组
CN204141397U (zh) 背光模组
CN205229620U (zh) 一种背光模组
CN204347286U (zh) 导光板及应用该导光板的背光模组
WO2016106915A1 (zh) 一种超薄面光源装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15911882

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 20/11/2018)

122 Ep: pct application non-entry in european phase

Ref document number: 15911882

Country of ref document: EP

Kind code of ref document: A1