WO2018014308A1 - 一种梯形入光的侧入式背光模组 - Google Patents

一种梯形入光的侧入式背光模组 Download PDF

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Publication number
WO2018014308A1
WO2018014308A1 PCT/CN2016/090928 CN2016090928W WO2018014308A1 WO 2018014308 A1 WO2018014308 A1 WO 2018014308A1 CN 2016090928 W CN2016090928 W CN 2016090928W WO 2018014308 A1 WO2018014308 A1 WO 2018014308A1
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Prior art keywords
light
trapezoidal
backlight module
guide plate
light source
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PCT/CN2016/090928
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English (en)
French (fr)
Inventor
周肇梅
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周肇梅
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Priority to PCT/CN2016/090928 priority Critical patent/WO2018014308A1/zh
Publication of WO2018014308A1 publication Critical patent/WO2018014308A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction

Definitions

  • the present invention relates to a display device, and more particularly to a trapezoidal light entering side-lit backlight module in a display device.
  • the structure of the side-lit backlight module is to use the light source (usually CCF1 or LED) after being energized, and the acrylic light is refracted by the printed dots to evenly distribute the light on the surface of the backlight module, and the principle is utilized. , you can convert the line source into a uniform surface source. Further, through the action of the diffusion sheet and other diaphragms, 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 light source usually CCF1 or LED
  • the invention provides a trapezoidal light-incident side-lit backlight module, comprising a light guide plate and a light source plate, the side of the light guide plate is provided with a trapezoidal light entrance groove, and the light source plate is provided with a light source, the light source It is disposed in the trapezoidal light entrance groove.
  • the trapezoidal light entrance groove includes an upper bottom portion and a waist portion on both sides of the upper bottom portion, and the light source abuts against the waist portion and the upper bottom portion of the trapezoidal light entrance groove.
  • the trapezoidal light entrance groove is located at a lower side of the light guide plate.
  • the side of the light guide plate not provided with the trapezoidal light entrance groove is provided with a reflective strip.
  • the reflective strip is attached to the side of the light guide plate.
  • the invention has the beneficial effects that: by the above scheme, the trapezoidal light entrance groove is arranged on the light guide plate, and the light source is disposed in the trapezoidal light entrance groove, thereby enhancing the scattering of the light source in the light guide plate and improving the utilization ratio of the light source.
  • the number of light sources can be reduced to maintain the brightness of the backlight module to achieve narrowing of the backlight module.
  • FIG. 1 is a schematic structural view of a trapezoidal light entering side-lit backlight module of the present invention.
  • Fig. 1 The reference numerals in Fig. 1 are: light guide plate 1; trapezoidal light entrance groove 2; light source 3; light source plate 4.
  • a trapezoidal light-input side-lit backlight module includes a light guide plate 1 and a light source plate 4 , and a side of the light guide plate 1 is provided with a trapezoidal light entrance groove 2 , and the light source plate 4 is disposed on the light source plate 4 .
  • the light source 3 is disposed in the trapezoidal light entrance groove 2.
  • the light source 3 is in close contact with the trapezoidal light entrance groove 2.
  • the trapezoidal light entrance groove 2 includes an upper bottom portion and a waist portion on both sides of the upper bottom portion, and the light source 3 abuts against the waist portion and the upper bottom portion of the trapezoidal light entrance groove 2.
  • At least two of the light sources 3 are in close contact with the upper bottom of the trapezoidal light entrance slot 2 .
  • the trapezoidal light entrance groove 2 is an isosceles trapezoid.
  • the light source 3 is a light emitting diode.
  • the trapezoidal light entrance groove 2 is located at a lower side of the light guide plate 1 .
  • the reflection strip is attached to the side of the light guide plate 1.
  • the trapezoidal light-incident side-entry backlight module provided by the invention can be arranged in the trapezoidal light-increasing groove 2 by providing a trapezoidal light-incident groove 2 on the light-guiding plate 1, thereby enhancing the light source 3 in the light guide plate.
  • the internal scattering improves the utilization of the light source 3, and the number of the light sources 3 can be reduced while maintaining the brightness, so as to achieve narrowing of the backlight module.
  • the invention provides a trapezoidal light-incident side-entry backlight module, and the depth of the trapezoidal light entrance groove 2 of the light guide plate 1 is according to the selected size of the light-emitting diode, the size of the light source plate 4, the expansion ratio of the light guide plate 1 and the structural tolerance dimension.
  • the principle is that the edge of the light source plate 4 is flush with the edge of the light guide plate 1.
  • the light guide plate 1 is divided into the light side (that is, the side on which the trapezoidal light entrance groove 2 is provided), and the other side is attached with a reflection strip or a structure having a function similar to the reflection strip, and is disposed on the light entrance side of the light guide plate 1 (that is, a trapezoid is provided)
  • the side of the light entrance 2 needs to be polished. Considering the narrowing of the edge, only one of the LEDs is bent at both ends of the light source panel 4. Inch, the bend angle is adjusted according to the type of LED selected.

Abstract

显示装置及显示装置中的一种梯形入光的侧入式背光模组。所述梯形入光的侧入式背光模组，包括导光板（1）和光源板（4），所述导光板（1）的侧边设有梯形入光槽（2），所述光源板（4）上设有光源（3），所述光源（3）设置在所述梯形入光槽（2）内，所述光源（3）紧贴所述梯形入光槽（2）。通过在导光板上设置梯形入光槽（2），将光源（3）设置在梯形入光槽（2）内，增强了光源（3）在导光板（1）内的散射，提高了光源（3）的利用率，可在保持亮度不变的基础上，减少光源（3）的数量，以实现背光模组窄边化。

Description

一种梯形入光的侧入式背光模组 技术领域
本发明涉及显示装置，尤其涉及显示装置中的一种梯形入光的侧入式背光模组。
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。
一般侧入式背光模组的结构为利用通电后的灯源(一般为CCFl或是LED)，其经过有印刷网点的亚克力折射导光，使光线均匀分布于背光模组的表面，利用该原理，就可以使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。
但是，目前随着LED技术的广泛应用以及节能减排的要求，减少LED的数量以及背光模组窄边化的应用越来越广泛，但现有的背光模组仍需要较多的LED来实现足够的亮度，导致背光模组窄边化难以实现。
发明内容
为了解决现有技术中的问题，本发明提供了一种LED的数量少、背光模组窄边化的梯形入光的侧入式背光模组。
本发明提供了一种梯形入光的侧入式背光模组，包括导光板和光源板，所述导光板的侧边设有梯形入光槽，所述光源板上设有光源，所述光源设置在所述梯形入光槽内。
作为本发明的进一步改进，所述光源紧贴所述梯形入光槽。
作为本发明的进一步改进，所述梯形入光槽包括上底部和位于所述上底部两侧的腰部，所述光源紧贴所述梯形入光槽的腰部和上底部。
作为本发明的进一步改进，所述梯形入光槽的腰部紧贴有一个所述光源。
作为本发明的进一步改进，所述梯形入光槽的上底部紧贴有至少二个所述光源。
作为本发明的进一步改进，所述梯形入光槽为等腰梯形。
作为本发明的进一步改进，所述光源为发光二极管。
作为本发明的进一步改进，所述梯形入光槽位于所述导光板的下侧边。
作为本发明的进一步改进，所述导光板没有设置所述梯形入光槽的侧边设有反射条。
作为本发明的进一步改进，所述反射条贴在所述导光板的侧边。
本发明的有益效果是：通过上述方案，可通过在导光板上设置梯形入光槽，将光源设置在梯形入光槽内，增强了光源在导光板内的散射，提高了光源的利用率，可在保持亮度不变的基础上，减少光源的数量，以实现背光模组窄边化。
附图说明
图1是本发明一种梯形入光的侧入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发明进一步说明。
图1中的附图标号为：导光板1；梯形入光槽2；光源3；光源板4。
如图1所示，一种梯形入光的侧入式背光模组，包括导光板1和光源板4，所述导光板1的侧边设有梯形入光槽2，所述光源板4上设有光源3，所 述光源3设置在所述梯形入光槽2内。
如图1所示，所述光源3紧贴所述梯形入光槽2。
如图1所示，所述梯形入光槽2包括上底部和位于所述上底部两侧的腰部，所述光源3紧贴所述梯形入光槽2的腰部和上底部。
如图1所示，所述梯形入光槽2的腰部紧贴有一个所述光源3。
如图1所示，所述梯形入光槽2的上底部紧贴有至少二个所述光源3。
如图1所示，所述梯形入光槽2为等腰梯形。
如图1所示，所述光源3为发光二极管。
如图1所示，所述梯形入光槽2位于所述导光板1的下侧边。
如图1所示，所述导光板1没有设置所述梯形入光槽2的侧边设有反射条，以加强光线在所述导光板1内的反射。
如图1所示，所述反射条贴在所述导光板1的侧边。
本发明提供的一种梯形入光的侧入式背光模组，可通过在导光板1上设置梯形入光槽2，将光源3设置在梯形入光槽2内，增强了光源3在导光板内的散射，提高了光源3的利用率，可在保持亮度不变的基础上，减少光源3的数量，以实现背光模组窄边化。
本发明提供的一种梯形入光的侧入式背光模组，导光板1的梯形入光槽2的深度根据选用的发光二极管尺寸、光源板4尺寸、导光板1伸缩率及结构配合公差尺寸而定，以光源板4边缘与导光板1边缘平齐为原则。导光板1除入光侧(即设置有梯形入光槽2的一侧)，其他侧边均贴反射条或加工有类似反射条功能的结构，在导光板1入光侧(即设置有梯形入光槽2的一侧)需做抛光处理。考虑到窄边化，在光源板4两头仅折弯1颗发光二极管的尺 寸，折弯角度根据所选取的发光二极管类型进行调整。相比于常规侧入式背光模组，此种入光方式通过减少发光二极管的应用，降低了背光模组的能耗及经济成本，同时窄边框的设计也提高了产品的外观。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (1)

  1. 一种梯形入光的侧入式背光模组，其特征在于：包括导光板和光源板，所述导光板的侧边设有梯形入光槽，所述光源板上设有光源，所述光源设置在所述梯形入光槽内，所述光源紧贴所述梯形入光槽。
PCT/CN2016/090928 2016-07-21 2016-07-21 一种梯形入光的侧入式背光模组 WO2018014308A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030184990A1 (en) * 2002-03-26 2003-10-02 Chia-Feng Lin Light-guiding plate module of high reliability
CN101463968A (zh) * 2008-10-06 2009-06-24 九朗光电（深圳）有限公司 Led导光条装置及使用该装置的平面和桶形光源
CN101477271A (zh) * 2008-01-04 2009-07-08 扬昕精密股份有限公司 侧光式背光模块
CN202253055U (zh) * 2011-08-10 2012-05-30 瑞仪光电股份有限公司 光源模块
CN202916457U (zh) * 2012-11-29 2013-05-01 京东方科技集团股份有限公司 导光板、led平面光源及显示面板
CN103576383A (zh) * 2012-07-30 2014-02-12 株式会社日本显示器 显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030184990A1 (en) * 2002-03-26 2003-10-02 Chia-Feng Lin Light-guiding plate module of high reliability
CN101477271A (zh) * 2008-01-04 2009-07-08 扬昕精密股份有限公司 侧光式背光模块
CN101463968A (zh) * 2008-10-06 2009-06-24 九朗光电（深圳）有限公司 Led导光条装置及使用该装置的平面和桶形光源
CN202253055U (zh) * 2011-08-10 2012-05-30 瑞仪光电股份有限公司 光源模块
CN103576383A (zh) * 2012-07-30 2014-02-12 株式会社日本显示器 显示装置
CN202916457U (zh) * 2012-11-29 2013-05-01 京东方科技集团股份有限公司 导光板、led平面光源及显示面板

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