WO2018014310A1 - Backlight source assembly of liquid crystal display - Google Patents

Backlight source assembly of liquid crystal display Download PDF

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Publication number
WO2018014310A1
WO2018014310A1 PCT/CN2016/090930 CN2016090930W WO2018014310A1 WO 2018014310 A1 WO2018014310 A1 WO 2018014310A1 CN 2016090930 W CN2016090930 W CN 2016090930W WO 2018014310 A1 WO2018014310 A1 WO 2018014310A1
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Prior art keywords
light
guide plate
trapezoidal
light guide
light source
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PCT/CN2016/090930
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French (fr)
Chinese (zh)
Inventor
周肇梅
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周肇梅
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Priority to PCT/CN2016/090930 priority Critical patent/WO2018014310A1/en
Publication of WO2018014310A1 publication Critical patent/WO2018014310A1/en

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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
    • 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

Definitions

  • the present invention relates to display devices, and more particularly to a backlight assembly for a liquid crystal display in a display device.
  • the backlight component also known as 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 side-entry backlight assembly is to use a light source (usually CCF1 or LED) after being energized, which is refracted by the acrylic with the printed dots to evenly distribute the light on the surface of the backlight assembly. , 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.
  • a light source usually CCF1 or LED
  • the present invention provides a backlight assembly of a liquid crystal display having a small number of LEDs and a narrow side.
  • the present invention provides a backlight assembly of a liquid crystal display, 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, the light source plate is provided with a light source, and the light source is disposed at the Trapezoidal into the light slot.
  • the light source abuts 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 waist of the trapezoidal light entrance groove is in close contact with one of the light sources.
  • At least two of the light sources are closely attached to the upper bottom of the trapezoidal light entrance groove.
  • the trapezoidal light entrance groove is an isosceles trapezoid.
  • the light source is a light emitting diode.
  • 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 while keeping the brightness constant, so that the backlight components can be narrowed.
  • FIG. 1 is a schematic structural view of a backlight assembly of a liquid crystal display 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 backlight assembly of a liquid crystal display includes a light guide plate 1 and a light source panel 4,
  • the side of the light guide plate 1 is provided with a trapezoidal light entrance groove 2
  • the light source plate 4 is provided with a light source 3, and 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.
  • the light source 3 is closely attached to the waist 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 light guide plate 1 is not provided with a reflective strip on the side of the trapezoidal light entrance slot 2 to enhance the reflection of light in the light guide plate 1 .
  • the reflection strip is attached to the side of the light guide plate 1.
  • the backlight assembly of the liquid crystal display provided by the present invention can provide the light source 3 in the trapezoidal light entrance groove 2 by providing the trapezoidal light entrance groove 2 on the light guide plate 1, thereby enhancing the scattering of the light source 3 in the light guide plate.
  • the utilization ratio of the light source 3 is improved, and the number of the light sources 3 can be reduced while maintaining the brightness, so as to narrow the edge of the backlight assembly.
  • the depth of the trapezoidal light entrance groove 2 of the light guide plate 1 is determined according to the size of the selected light emitting diode, the size of the light source plate 4, the expansion ratio of the light guide plate 1 and the structural tolerance tolerance.
  • the edge of the light source panel 4 is flush with the edge of the light guide panel 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) On the side of the light slot 2) Need to be polished.
  • the light-incident mode reduces the energy consumption and economic cost of the backlight component by reducing the application of the light-emitting diode, and the design of the narrow frame also improves the appearance of the product.

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

Abstract

Disclosed are a display device and a backlight source assembly of a liquid crystal display in the display device. The backlight source assembly comprises a light guide plate (1) and a light source panel (4), a side edge of the light guide plate (1) being provided with a trapezoidal incident light groove (2), light sources (3) being provided on the light source panel (4), the light sources (3) being provided in the trapezoidal incident light groove (2), a side edge, where the trapezoidal incident light groove (2) is not disposed, of the light guide plate (1) being provided with a reflection strip, and the reflection strip being adhered to a side edge of the light guide plate (1). By providing the trapezoidal incident light groove (2) on the light guide plate (1), the light sources (3) are provided in the trapezoidal incident light groove (2), increasing the diffusion of the light sources (3) in the light guide plate (1), and improving the utilisation rate of the light sources (3), wherein on the basis of keeping the brightness unchanged, the number of light sources (3) can be reduced to achieve narrower edges of the backlight source assembly.

Description

液晶显示器的背光源组件Backlight component of liquid crystal display 技术领域Technical field
本发明涉及显示装置，尤其涉及显示装置中的一种液晶显示器的背光源组件。The present invention relates to display devices, and more particularly to a backlight assembly for a liquid crystal display in a display device.
背景技术Background technique
背光源组件又称为(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。The backlight component, also known as 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.
一般侧入式背光源组件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源组件的表面，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。Generally, the structure of the side-entry backlight assembly is to use a light source (usually CCF1 or LED) after being energized, which is refracted by the acrylic with the printed dots to evenly distribute the light on the surface of the backlight assembly. , 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.
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的数量以及背光源组件窄边化的应用越来越广泛，但现有的背光源组件仍需要较多的LED来实现足够的亮度，导致背光源组件窄边化难以实现。However, with the widespread application of LED technology and the requirements of energy saving and emission reduction, the application of reducing the number of LEDs and narrowing the backlight components is more and more widely used, but the existing backlight components still need more LEDs to realize Sufficient brightness makes it difficult to achieve narrowing of the backlight assembly.
发明内容Summary of the invention
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、窄边化的液晶显示器的背光源组件。In order to solve the problems in the prior art, the present invention provides a backlight assembly of a liquid crystal display having a small number of LEDs and a narrow side.
本发明提供了一种液晶显示器的背光源组件，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。 The present invention provides a backlight assembly of a liquid crystal display, 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, the light source plate is provided with a light source, and the light source is disposed at the Trapezoidal into the light slot.
作为本发明的进一步改进，所述光源紧贴所述梯形入光槽。As a further improvement of the present invention, the light source abuts the trapezoidal light entrance groove.
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。As a further improvement of the present invention, 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.
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。As a further improvement of the present invention, the waist of the trapezoidal light entrance groove is in close contact with one of the light sources.
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。As a further improvement of the present invention, at least two of the light sources are closely attached to the upper bottom of the trapezoidal light entrance groove.
作为本发明的进一步改进，所述梯形入光槽为等腰梯形。As a further improvement of the present invention, the trapezoidal light entrance groove is an isosceles trapezoid.
作为本发明的进一步改进，所述光源为发光二极管。As a further improvement of the invention, the light source is a light emitting diode.
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。As a further improvement of the present invention, the trapezoidal light entrance groove is located at a lower side of the light guide plate.
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。As a further improvement of the present invention, the side of the light guide plate not provided with the trapezoidal light entrance groove is provided with a reflective strip.
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。As a further improvement of the present invention, the reflective strip is attached to the side of the light guide plate.
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，以实现背光源组件窄边化。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 while keeping the brightness constant, so that the backlight components can be narrowed.
附图说明DRAWINGS
图1是本发明一种液晶显示器的背光源组件的结构示意图。1 is a schematic structural view of a backlight assembly of a liquid crystal display of the present invention.
具体实施方式detailed description
下面结合附图说明及具体实施方式对本发明进一步说明。The invention will now be further described with reference to the drawings and specific embodiments.
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。The reference numerals in Fig. 1 are: light guide plate 1; trapezoidal light entrance groove 2; light source 3; light source plate 4.
如图1所示，一种液晶显示器的背光源组件，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。As shown in FIG. 1, a backlight assembly of a liquid crystal display includes a light guide plate 1 and a light source panel 4, The side of the light guide plate 1 is provided with a trapezoidal light entrance groove 2, and the light source plate 4 is provided with a light source 3, and the light source 3 is disposed in the trapezoidal light entrance groove 2.
如图1所示，所述光源3紧贴所述梯形入光槽2。As shown in FIG. 1, the light source 3 is in close contact with the trapezoidal light entrance groove 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。As shown in FIG. 1, 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.
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。As shown in FIG. 1, the light source 3 is closely attached to the waist of the trapezoidal light entrance groove 2.
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。As shown in FIG. 1 , at least two of the light sources 3 are in close contact with the upper bottom of the trapezoidal light entrance slot 2 .
如图1所示，所述梯形入光槽2为等腰梯形。As shown in FIG. 1, the trapezoidal light entrance groove 2 is an isosceles trapezoid.
如图1所示，所述光源3为发光二极管。As shown in FIG. 1, the light source 3 is a light emitting diode.
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。As shown in FIG. 1 , the trapezoidal light entrance groove 2 is located at a lower side of the light guide plate 1 .
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。As shown in FIG. 1 , the light guide plate 1 is not provided with a reflective strip on the side of the trapezoidal light entrance slot 2 to enhance the reflection of light in the light guide plate 1 .
如图1所示，所述反射条贴在所述导光板1的侧边。As shown in FIG. 1, the reflection strip is attached to the side of the light guide plate 1.
本发明提供的一种液晶显示器的背光源组件，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，以实现背光源组件窄边化。The backlight assembly of the liquid crystal display provided by the present invention can provide the light source 3 in the trapezoidal light entrance groove 2 by providing the trapezoidal light entrance groove 2 on the light guide plate 1, thereby enhancing the scattering of the light source 3 in the light guide plate. The utilization ratio of the light source 3 is improved, and the number of the light sources 3 can be reduced while maintaining the brightness, so as to narrow the edge of the backlight assembly.
本发明提供的一种液晶显示器的背光源组件，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源组件，此种入光方式通过减少发光二极管的应用，降低了背光源组件的能耗及经济成本，同时窄边框的设计也提高了产品的外观。The backlight assembly of the liquid crystal display provided by the present invention, the depth of the trapezoidal light entrance groove 2 of the light guide plate 1 is determined according to the size of the selected light emitting diode, the size of the light source plate 4, the expansion ratio of the light guide plate 1 and the structural tolerance tolerance. The edge of the light source panel 4 is flush with the edge of the light guide panel 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) On the side of the light slot 2) Need to be polished. Considering the narrowing of the edge, only one LED is bent at both ends of the light source panel 4, and the bending angle is adjusted according to the type of the selected LED. Compared with the conventional edge-in type backlight assembly, the light-incident mode reduces the energy consumption and economic cost of the backlight component by reducing the application of the light-emitting diode, and the design of the narrow frame also improves the appearance of the product.
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。 The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Claims (1)

  1. 一种液晶显示器的背光源组件，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，所述导光板没有设置所述梯形入光槽的侧边设有反射条，所述反射条贴在所述导光板的侧边。 A backlight assembly for a liquid crystal display, 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, the light source plate is provided with a light source, and the light source is disposed at the The side of the trapezoidal light entrance plate is not provided with a reflective strip, and the reflective strip is attached to the side of the light guide plate.
PCT/CN2016/090930 2016-07-21 2016-07-21 Backlight source assembly of liquid crystal display WO2018014310A1 (en)

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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
CN1504767A (en) * 2002-11-29 2004-06-16 鸿富锦精密工业（深圳）有限公司 Light guide plate and light source system employing the same
CN101463968A (en) * 2008-10-06 2009-06-24 九朗光电（深圳）有限公司 LED light leading strip apparatus and plane and barrel-shape light source using the same
CN202253055U (en) * 2011-08-10 2012-05-30 瑞仪光电股份有限公司 Light source module
CN202916457U (en) * 2012-11-29 2013-05-01 京东方科技集团股份有限公司 A light guide plate, a LED plane light source, and a display panel
CN103576383A (en) * 2012-07-30 2014-02-12 株式会社日本显示器 Display device

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
CN1504767A (en) * 2002-11-29 2004-06-16 鸿富锦精密工业（深圳）有限公司 Light guide plate and light source system employing the same
CN101463968A (en) * 2008-10-06 2009-06-24 九朗光电（深圳）有限公司 LED light leading strip apparatus and plane and barrel-shape light source using the same
CN202253055U (en) * 2011-08-10 2012-05-30 瑞仪光电股份有限公司 Light source module
CN103576383A (en) * 2012-07-30 2014-02-12 株式会社日本显示器 Display device
CN202916457U (en) * 2012-11-29 2013-05-01 京东方科技集团股份有限公司 A light guide plate, a LED plane light source, and a display panel

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