WO2016149966A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

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WO2016149966A1
WO2016149966A1 PCT/CN2015/076271 CN2015076271W WO2016149966A1 WO 2016149966 A1 WO2016149966 A1 WO 2016149966A1 CN 2015076271 W CN2015076271 W CN 2015076271W WO 2016149966 A1 WO2016149966 A1 WO 2016149966A1
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backlight module
light guide
optical film
guide plate
plate
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PCT/CN2015/076271
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English (en)
French (fr)
Inventor
曾杰
周革革
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深圳市华星光电技术有限公司
武汉华星光电技术有限公司
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Publication of WO2016149966A1 publication Critical patent/WO2016149966A1/zh

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  • the present invention relates to the field of liquid crystal display manufacturing, and in particular to a backlight module and a display device.
  • liquid crystal display devices have been widely used in various electronic products as display components of electronic devices. With the development of thin and light electronic products, display devices of electronic devices are increasingly required.
  • the backlight module is an important component in the liquid crystal display device, and the functional performance requirements of the backlight module are also higher and higher.
  • the backlight module of the prior art comprises a plastic frame, the light guide plate is surrounded by the plastic frame, and the optical film is fixed on the light guide plate and the plastic frame by the light shielding tape; the back plate and the light source disposed around the plastic frame shown Flexible circuit board and light-shield tape.
  • the light guide plate is an important part of the backlight module. However, a part of the light that is coupled into the light guide plate from the LED is emitted from the other three sides of the light guide plate, thereby causing waste of light and reducing light utilization.
  • the object of the present invention is to provide a backlight module, which can improve the light guiding efficiency of the light guide plate.
  • the invention also provides a display device.
  • the present invention provides a backlight module
  • the backlight module includes a plastic frame, a light guide plate and an optical film
  • the plastic frame is provided with a side wall, and the side wall is concavely provided with a groove
  • the groove is a reflective layer is disposed on the inner surface of the groove
  • the optical film is stacked on the light guide plate
  • the plastic frame is disposed around the periphery of the light guide plate and the optical film, and the non-incident end of the light guide plate is inserted
  • the groove is in contact with the reflective layer.
  • the surface of the plastic frame and the optical film on the same horizontal plane is the upper surface of the sidewall, and the optical film is fixed on the upper surface by double-sided tape.
  • the backlight module further includes a backboard, the backboard includes a bottom plate and a side panel, and the plastic frame, the light guide plate and the optical film are received in the backboard.
  • the backlight module further includes a reflective sheet, and the reflective sheet is disposed between the bottom of the backboard and the light guide plate.
  • the backlight module further includes a reflective sheet, the reflective sheet and the optical film sandwich the light guide plate, and the reflective layer is formed by extending the reflective sheet into the groove.
  • the backlight module further includes a backboard, the backboard includes a bottom plate and a side panel, and the plastic frame, the light guide plate and the optical film are received in the backboard.
  • the present invention provides a display device, which includes a backlight module and a display panel.
  • the backlight module includes a plastic frame, a light guide plate, and an optical film.
  • the plastic frame is provided with a light guide plate facing the light guide plate. a sidewall, the sidewall is recessed with a groove, and the inner surface of the groove is provided with a reflective layer, the optical film is stacked on the light guide plate, and the plastic frame surrounds the guide
  • the light panel and the optical film are disposed at a periphery of the optical plate, and the non-incident optical end of the light guide plate is inserted into the groove to abut the reflective layer; the display panel is disposed on the backlight module, and the display panel is And the optical film is fixed by double-sided tape.
  • the surface of the plastic frame and the optical film on the same horizontal plane is the upper surface of the sidewall, and the optical film is fixed on the upper surface by double-sided tape.
  • the backlight module further includes a backboard, the backboard includes a bottom plate and a side panel, and the plastic frame, the light guide plate and the optical film are received in the backboard.
  • the backlight module further includes a reflective sheet, and the reflective sheet is disposed between the bottom of the backboard and the light guide plate.
  • the backlight module further includes a reflective sheet, the reflective sheet and the optical film sandwich the light guide plate, and the reflective layer is formed by extending the reflective sheet into the groove.
  • the backlight module further includes a backboard, the backboard includes a bottom plate and a side panel, and the plastic frame, the light guide plate and the optical film are received in the backboard.
  • a recess is disposed on a sidewall of the plastic frame of the backlight module of the present invention, and a reflective layer is disposed in the recess, the non-incident optical end of the light guide plate is inserted into the recess, and the reflective layer is to be non-incident.
  • the light emitted from the light end is reflected back to the light guide plate for reuse, and the efficiency of the light guide plate and the utilization rate of light are extracted.
  • FIG. 1 is a schematic cross-sectional view of a backlight module according to an embodiment of the present invention.
  • FIG. 2 is an enlarged schematic view showing a partial cross section of the backlight module shown in FIG. 1.
  • FIG. 2 is an enlarged schematic view showing a partial cross section of the backlight module shown in FIG. 1.
  • FIG. 3 is a schematic cross-sectional view showing another embodiment of the backlight module of FIG. 1.
  • a preferred embodiment of the present invention provides a backlight module.
  • the backlight module includes a back plate 11 , a plastic frame 13 , a light guide plate 15 , and an optical film 17 .
  • the light guide plate 15 and the optical film 17 are sequentially mounted in the back plate 11 .
  • the light guide plate 15 and the optical film 17 are in a plate shape.
  • the plastic frame 13 is provided with a sidewall 131, and the sidewall 131 is recessed with a groove 132.
  • the inner surface of the groove of the groove 132 is provided with a reflective layer 14, the optical film. 17 is stacked on the light guide plate 15 , the plastic frame 13 is mounted on the inner circumference of the back plate 11 and disposed around the periphery of the light guide plate 15 and the optical film 17 , and the non-incident light of the light guide plate 15 The end is inserted into the recess 142 to abut the reflective layer 14.
  • the surface of the plastic frame 13 and the optical film 17 on the same horizontal plane is the upper surface 133 of the sidewall 131, and the optical film 17 is fixed on the upper surface 133 by the double-sided tape 16, thereby realizing The positioning of the optical film 17 by the upper surface 133 is described.
  • the sidewall 131 faces the light guide plate 15 and the optical film 17, and the groove 142 is disposed on the sidewall 131 and penetrates the other surface of the sidewall 131 away from the upper surface 133.
  • the groove 14 is formed with a baffle 141 for pressing the light guide plate 15 in the direction of the back plate to realize positioning of the light guide plate 15.
  • the groove may also be a strip groove formed along a sidewall of the plastic frame 13.
  • the back plate 11 includes a bottom plate 111 and a side plate 112.
  • the bottom plate 111 and the side plate 112 enclose a receiving space for receiving the plastic frame 13, the light guide plate 15 and the optical film 17.
  • the backlight module further includes a reflective sheet 19, and the reflective sheet 19 is disposed between the bottom plate 111 and the light guide plate 15.
  • the backlight module further includes a light reflecting sheet 21, the light reflecting sheet 21 and the optical film 17 sandwich the light guiding plate 15, and the
  • the reflective layer 14 is formed by the retroreflective sheeting 21 extending into the recess 132.
  • the retroreflective sheeting 21 includes a plate body 211 opposite to the light guide plate 15 and a reflective layer 212 formed by bending an end portion of the plate body 211 away from the light source, and the reflective layer 212 can be received in the concave shape.
  • the groove 132 fits snugly against the groove inner surface of the groove.
  • the reflective layer 212 in this embodiment is formed by extending the plate body 211 perpendicularly and extending to the square parallel plate body 211 of the plate body 211.
  • the present invention also provides a display device including the backlight module and the display panel, the display panel is disposed on the backlight module, and the display panel and the optical film 17
  • the plastic frame 13 is fixed by double-sided tape.
  • a recess is disposed on a sidewall of the plastic frame of the backlight module of the present invention, and a reflective layer is disposed in the recess, the non-incident optical end of the light guide plate is inserted into the recess, and the reflective layer is to be non-incident.
  • the light emitted from the light end is reflected back to the light guide plate for reuse, and the efficiency of the light guide plate and the utilization rate of light are extracted.

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  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

一种背光模组及显示装置，背光模组包括：胶框（13）、导光板（15）及光学膜片（17），胶框（13）设有侧壁（131），侧壁（131）上凹设有凹槽（132），凹槽（132）的槽内表面上设有反射层（14），光学膜片（17）叠设于导光板（15）上，胶框（13）围绕导光板（15）及光学膜片（17）周缘设置，并且导光板（15）的非入射光端插入凹槽（132）内与反射层（14）抵接。

Description

背光模组及显示装置
本发明要求2015年3月20日递交的发明名称为“背光模组及显示装置”的申请号201510126230.7的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及液晶显示制造领域，尤其涉及一种背光模组及显示装置。
背景技术
目前，液晶显示装置作为电子设备的显示部件已经广泛的应用于各种电子产品中，随着电子产品轻薄化的发展，电子设备的显示装置要求越来越高。而背光模组则是液晶显示装置中的一个重要部件，背光模组的功能性能要求也越来越高。
现有技术中的背光模组均包括胶框，导光板被胶框包围，光学膜片通过遮光胶带固定于所述导光板和胶框上；设置于所示胶框周围的背板、灯源柔性电路板以及遮光胶带。导光板是背光模组的重要组成部分。但是，由于上述背光模组从LED耦合进入导光板的光线有一部分从导光板另外三个侧面射出，从而造成光线的浪费，降低了光的利用率。
发明内容
本发明的目的在于提供一种背光模组，可以提高导光板导光效率。
本发明还提供一种显示装置。
本发明提供一种背光模组，所述背光模组包括胶框、导光板及光学膜片，所述胶框设有侧壁，所述侧壁上凹设有凹槽，所述凹槽的槽内表面上设有反射层，所述光学膜片叠设于所述导光板上，所述胶框围绕所述导光板及光学膜片周缘设置，并且所述导光板的非入射光端插入所述凹槽内与所述反射层抵接。
其中，所述胶框与光学膜片位于同一水平面的表面为侧壁的上表面，所述光学膜片通过双面胶固定于所述上表面上。
其中，所述背光模组还包括背板，所述背板包括底板及侧板，所述胶框、导光板及光学膜片收容于所述背板内。
其中，所述背光模组还包括反光片，所述反光片装于所述背板底部与所述导光板之间。
其中，所述背光模组还包括反光片，所述反光片与所述光学膜片将所述导光板夹持，并且所述反射层由所述反光片延伸至凹槽内而形成。
其中，所述背光模组还包括背板，所述背板包括底板及侧板，所述胶框、导光板及光学膜片收容于所述背板内。
本发明提供一种显示装置，所述显示装置包括背光模组和显示面板，所述背光模组包括胶框、导光板及光学膜片，其特征在于，所述胶框设有朝向导光板的侧壁，所述侧壁上凹设有凹槽，所述凹槽的槽内表面上设有反射层，所述光学膜片叠设于所述导光板上，所述胶框围绕所述导光板及光学膜片周缘设置，并且所述导光板的非入射光端插入所述凹槽内与所述反射层抵接；所述显示面板设于所述背光模组上，且所述显示面板与所述光学膜片之间通过双面胶固定。
其中，所述胶框与光学膜片位于同一水平面的表面为侧壁的上表面，所述光学膜片通过双面胶固定于所述上表面上。
其中，所述背光模组还包括背板，所述背板包括底板及侧板，所述胶框、导光板及光学膜片收容于所述背板内。
其中，所述背光模组还包括反光片，所述反光片装于所述背板底部与所述导光板之间。
其中，所述背光模组还包括反光片，所述反光片与所述光学膜片将所述导光板夹持，并且所述反射层由所述反光片延伸至凹槽内而形成。
其中，所述背光模组还包括背板，所述背板包括底板及侧板，所述胶框、导光板及光学膜片收容于所述背板内。
本发明的背光模组的胶框的侧壁上设置凹槽，并在凹槽内设置反射层，所述导光板非入射光端插入所述凹槽定位，并且所述反射层将从非入射光端射出的光线反射回导光板，进行再次利用，提稿了导光板效率以及光的利用率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例的背光模组截面示意图。
图2是图1所示的背光模组局截面部放大示意图。
图3是图1所述的背光模组另一实施例的截面示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1与图2，本发明佳实施方式提供一种背光模组。所述背光模组包括背板11、胶框13、导光板15及光学膜片17，所述导光板15及光学膜片17依次装于所述背板11内。所述导光板15与所述光学膜片17为板状。
本实施例中，所述胶框13设有侧壁131，所述侧壁131上凹设有凹槽132，所述凹槽132的槽内表面上设有反射层14，所述光学膜片17叠设于所述导光板15上，所述胶框13装于所述背板11内周缘并围绕所述导光板15及光学膜片17周缘设置，并且所述导光板15的非入射光端插入所述凹槽142内与所述反射层14抵接。
进一步的，所述胶框13与光学膜片17位于同一水平面的表面为侧壁131的上表面133，所述光学膜片17通过双面胶16固定于所述上表面133上，进而实现所述上表面133对所述光学膜片17的定位。本实施例中，所述侧壁131朝向所述导光板15及光学薄膜17，所述凹槽142设于所述侧壁131上并贯穿所述侧壁131远离上表面133的另一表面，进而所述凹槽14形成有挡板141，用于向背板方向抵压所述导光板15，实现对所述导光板15的定位。在其它实施例中，所述凹槽也可以是沿着所述胶框13的侧壁形成的条状凹槽。
所述背板11包括底板111及侧板112，所述底板111与所述侧板112围成收容空间，用于收容所述所述胶框13、导光板15及光学膜片17。本实施例中，背光模组还包括反光片19，所述反光片19装于底板111与所述导光板15之间。
请参阅图3，在本发明的另一实施例中，所述背光模组还包括反光片21，所述反光片21与所述光学膜片17将所述导光板15夹持，并且所述反射层14由所述反光片21延伸至凹槽132内而形成。具体的，所述反光片21包括与所述导光板15相对的板体211及由板体211远离灯源的端部弯折形成的反射层212，并且所述反射层212恰好可以收容于凹槽132内紧贴凹槽的槽内表面。本实施例中的反射层212垂直所述板体211弯折后又向板体211方形平行板体211延伸形成。
本发明还提供一种显示装置，所述显示装置包括所述的背光模组和显示面板，所述显示面板设于所述背光模组上，且所述显示面板与所述光学膜片17及胶框13的之间通过双面胶固定。
本发明的背光模组的胶框的侧壁上设置凹槽，并在凹槽内设置反射层，所述导光板非入射光端插入所述凹槽定位，并且所述反射层将从非入射光端射出的光线反射回导光板，进行再次利用，提稿了导光板效率以及光的利用率。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。

Claims (12)

  1. 一种背光模组，所述背光模组包括胶框、导光板及光学膜片，其特征在于，所述胶框设有朝向导光板的侧壁，所述侧壁上凹设有凹槽，所述凹槽的槽内表面上设有反射层，所述光学膜片叠设于所述导光板上，所述胶框围绕所述导光板及光学膜片周缘设置，并且所述导光板的非入射光端插入所述凹槽内与所述反射层抵接。
  2. 如权利要求1所述的背光模组，其特征在于，所述胶框与光学膜片位于同一水平面的表面为侧壁的上表面，所述光学膜片通过双面胶固定于所述上表面上。
  3. 如权利要求1所述的背光模组，其特征在于，所述背光模组还包括背板，所述背板包括底板及侧板，所述胶框、导光板及光学膜片收容于所述背板内。
  4. 如权利要求3所述的背光模组，其特征在于，所述背光模组还包括反光片，所述反光片装于所述背板底部与所述导光板之间。
  5. 如权利要求1所述的背光模组，其特征在于，所述背光模组还包括反光片，所述反光片与所述光学膜片将所述导光板夹持，并且所述反射层由所述反光片延伸至凹槽内而形成。
  6. 如权利要求5所述的背光模组，其特征在于，所述背光模组还包括背板，所述背板包括底板及侧板，所述胶框、导光板及光学膜片收容于所述背板内。
  7. 一种显示装置，其特征在于，所述显示装置包括背光模组和显示面板，所述背光模组包括胶框、导光板及光学膜片，其特征在于，所述胶框设有朝向导光板的侧壁，所述侧壁上凹设有凹槽，所述凹槽的槽内表面上设有反射层，所述光学膜片叠设于所述导光板上，所述胶框围绕所述导光板及光学膜片周缘设置，并且所述导光板的非入射光端插入所述凹槽内与所述反射层抵接；所述显示面板设于所述背光模组上，且所述显示面板与所述光学膜片之间通过双面胶固定。
  8. 如权利要求7所述的显示装置，其特征在于，所述胶框与光学膜片位 于同一水平面的表面为侧壁的上表面，所述光学膜片通过双面胶固定于所述上表面上。
  9. 如权利要求7所述的显示装置，其特征在于，所述背光模组还包括背板，所述背板包括底板及侧板，所述胶框、导光板及光学膜片收容于所述背板内。
  10. 如权利要求9所述的背光模组，其特征在于，所述背光模组还包括反光片，所述反光片装于所述背板底部与所述导光板之间。
  11. 如权利要求7所述的显示装置，其特征在于，所述背光模组还包括反光片，所述反光片与所述光学膜片将所述导光板夹持，并且所述反射层由所述反光片延伸至凹槽内而形成。
  12. 如权利要求11所述的显示装置，其特征在于，所述背光模组还包括背板，所述背板包括底板及侧板，所述胶框、导光板及光学膜片收容于所述背板内。
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