WO2016206147A1 - 背光模组及液晶显示器 - Google Patents

背光模组及液晶显示器 Download PDF

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Publication number
WO2016206147A1
WO2016206147A1 PCT/CN2015/084278 CN2015084278W WO2016206147A1 WO 2016206147 A1 WO2016206147 A1 WO 2016206147A1 CN 2015084278 W CN2015084278 W CN 2015084278W WO 2016206147 A1 WO2016206147 A1 WO 2016206147A1
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WIPO (PCT)
Prior art keywords
sheet
guide plate
light guide
backlight module
reflective
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2015/084278
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English (en)
French (fr)
Inventor
曾杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
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 Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to JP2017540760A priority Critical patent/JP6450512B2/ja
Priority to US14/779,392 priority patent/US10302850B2/en
Priority to GB1710854.9A priority patent/GB2552892B/en
Priority to KR1020177021767A priority patent/KR102008076B1/ko
Publication of WO2016206147A1 publication Critical patent/WO2016206147A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • 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
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133504—Diffusing, scattering, diffracting elements

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a backlight module and a liquid crystal display having the same.
  • LCDs liquid crystal displays
  • PDAs personal digital assistants
  • the backlight module As an important component in the liquid crystal display, the backlight module has become a trend.
  • the narrow border means that the screen area that can be seen under the same size screen is larger and the visual effect is better.
  • the backlight module generally includes a light guide plate, a plastic frame disposed around the light guide plate, a flexible circuit board, an optical film, and a light shielding tape, and the flexible circuit board is fixed to the light guide plate by the light shielding tape. And on the plastic frame, the optical film is fixed on the plastic frame by the light shielding tape.
  • the backlight module has at least the following problems:
  • the plastic frame itself has a certain thickness, this will inevitably increase the thickness of the backlight module, thereby increasing the overall thickness of the liquid crystal display, which cannot meet the mainstream needs of the market.
  • the existing backlight module requires many components and has a complicated structure, which increases the manufacturing cost.
  • the assembly process of the plastic frame and the light guide plate is complicated and cumbersome, and the assembly efficiency is low.
  • the object of the present invention is to provide a backlight module, which has a small thickness of the backlight module and a simple assembly process. Single advantage.
  • Another object of the present invention is to provide a liquid crystal display using the above backlight module.
  • the backlight module provided by the present invention comprises an optical film set, a light guide plate and a reflective sheet
  • the optical film set comprises a first prism sheet
  • the first prism sheet comprises a display area, two side walls, and a joint
  • the display area is opposite to the reflective sheet
  • the side wall is formed by extending downwardly from the display area, and the side wall is connected between the display area and the joint area to form a receiving area.
  • the light guide plate and the reflective sheet are stacked on each other in the accommodating space, and the light guide plate is located between the reflective sheet and the optical film set, and the reflective sheet is located on the light guide plate. Between the junction area.
  • a boundary line is disposed at a boundary between the display area and the side wall, and a boundary between the joint area and the side wall is provided to facilitate bending of the first prism sheet.
  • the inner side of the side wall of the first prism sheet is coated with a reflective layer, and the reflective layer can reflect light incident on the surface thereof back into the light guide plate.
  • joint zone is integral with one of the side walls and extends toward the other of the side walls, the joint zone being attached to the bottom of the reflective sheet.
  • the number of the joint zones is two, one of the joint zones is connected to one of the side walls, and the other of the joint zones is connected to the other of the side walls, the two joint zones are respectively The two side walls extend toward each other, and the two joint areas are attached to the bottom of the reflection sheet.
  • the free ends of the two joint regions are isolated from each other and attached to the bottom of the reflection sheet respectively.
  • the optical film set further includes a second prism sheet and a diffusion sheet, the second prism sheet is located between the first prism sheet and the diffusion sheet, and the diffusion sheet is attached to the light guide plate. .
  • one circumferential outer surface of the light guide plate is provided with a light incident surface, and the remaining circumferential outer surface is coated with a reflective layer, and the reflective layer can reflect light incident on the surface thereof back into the light guide plate.
  • the display module includes an optical film set, a light guide plate, and a reflective sheet.
  • the optical film set includes a first prism sheet, and the first prism sheet includes a display area and two side walls. a display area opposite to the reflective sheet, the side wall being formed by extending downwardly from the display area, the side wall being connected between the display area and the joint area, Forming a receiving space, the guide The light guide plate and the reflective sheet are stacked on each other in the accommodating space, and the light guide plate is located between the reflective sheet and the optical film set, and the reflective sheet is located at the light guide plate and the joint area. between.
  • a boundary line is disposed at a boundary between the display area and the side wall, and a boundary between the joint area and the side wall is provided to facilitate bending of the first prism sheet.
  • the inner side of the side wall of the first prism sheet is coated with a reflective layer, and the reflective layer can reflect light incident on the surface thereof back into the light guide plate.
  • joint zone is integral with one of the side walls and extends toward the other of the side walls, the joint zone being attached to the bottom of the reflective sheet.
  • the number of the joint zones is two, one of the joint zones is connected to one of the side walls, and the other of the joint zones is connected to the other of the side walls, the two joint zones are respectively The two side walls extend toward each other, and the two joint areas are attached to the bottom of the reflection sheet.
  • the free ends of the two joint regions are isolated from each other and attached to the bottom of the reflection sheet respectively.
  • the optical film set further includes a second prism sheet and a diffusion sheet, the second prism sheet is located between the first prism sheet and the diffusion sheet, and the diffusion sheet is attached to the light guide plate. .
  • one circumferential outer surface of the light guide plate is provided with a light incident surface, and the remaining circumferential outer surface is coated with a reflective layer, and the reflective layer can reflect light incident on the surface thereof back into the light guide plate.
  • the first prism sheet in the optical film group is extended into a plurality of regions, so that the first prism sheet can be bent to fix the light guide plate and the reflective sheet, thereby saving
  • the technical solution of the plastic frame is solved, and the technical problem that the overall thickness of the backlight module is thick is solved, the overall thickness of the backlight module is reduced, and the technical effect of the narrow frame design is realized.
  • the backlight module of the present invention since the backlight module of the present invention has a simple structure, the manufacturing cost is reduced, and the assembly process of the entire backlight module is more convenient, and the assembly efficiency is greatly improved.
  • FIG. 1 is a schematic structural view of a backlight module according to a first embodiment of the present invention
  • FIG. 2 is a partial schematic view of a backlight module according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a backlight module according to a second embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a backlight module according to a third embodiment of the present invention.
  • the backlight module 100 of the embodiment of the present invention may be a liquid crystal backlight module, including an optical film set 20 , a light guide plate 3 , and a reflective sheet 4 .
  • the optical film set 20 includes a first prism sheet 21 .
  • the prism sheet has a function of condensing light and improving the brightness of the front view.
  • the first prism sheet 21 includes a display area 211, and two side walls 212 extending from the display area 211, and a joint area 213, the display
  • the 211 is disposed opposite to the reflective sheet 4, and the sidewall 212 is connected between the display area 211 and the lands 213 to form a receiving space.
  • the optical film set 20 is disposed on the light guide plate.
  • the light guide plate 3 is located between the reflection sheet 4 and the optical film group 20, and the reflection sheet 4 is located between the light guide plate 3 and the joint region 213.
  • the light guide plate 3 and the reflective sheet 4 are aligned with each other.
  • the first prism sheet 21 is extended into the display area 211, the side wall 212, the joint area 213, and the first prism sheet 21 is bent for fixing the light guide plate 3 and the reflection sheet 4, thereby eliminating the glue.
  • the frame not only eliminates the assembly gap existing in the assembly process of the backlight module 100, but also reduces the overall thickness of the backlight module 100, and realizes a narrow bezel design.
  • the backlight module 100 since the backlight module 100 has a simple structure, the manufacturing cost is reduced, and the assembly process of the entire backlight module 100 is more convenient. Jie, greatly improved the assembly efficiency.
  • the first prism sheet 21 is provided with a fold line 210, and a fold line 210 is disposed at a boundary between the display area 211 and the side wall 212 and a boundary between the joint area 213 and the side wall 212.
  • the first prism sheet 21 is made more convenient to be bent.
  • the optical film set 20 further includes a second prism sheet 22 and a diffusion sheet 23 .
  • the first prism sheet 21, the second prism sheet 22, and the diffusion sheet 23 are arranged in an overlapping manner from top to bottom, that is, the second prism sheet 22 is located between the first prism sheet 21 and the diffusion sheet 23,
  • the diffusion sheet 23 is attached to the light guide plate 3, and the diffusion sheet 23 is for diffusing incident light to prevent interference.
  • the two side walls extend in the middle to form two joint regions 213, and the two joint regions 213 are respectively integrated with one side wall, that is, One of the joint regions is connected to the one of the side walls, and the other of the joint regions is connected to the other of the side walls, the two joint regions respectively extending from the two side walls, the two The land 213 is attached to the bottom of the reflection sheet 4 to form a receiving space.
  • the free ends of the two joint regions 213 in this embodiment may be connected together by a single-sided glue 5.
  • FIG. 1 the second embodiment of the present invention, as shown in FIG.
  • the two joint regions 213 may not be connected to each other, and the two joint regions are respectively attached to the bottom surface of the reflection sheet 4 by the single-sided rubber 5, A part of the single-sided tape 5 is attached to the bottom surface of the reflection sheet 4, and the other portion is attached to the reflection area 213.
  • joint region 213 can also be attached to the bottom of the reflective sheet 4 by double-sided tape or thermosetting glue.
  • the joint region 213 is formed by extending one of the sidewalls 2121 to the other sidewall 2122, and the joint region 213 and the sidewall 2121.
  • the region 213 and the side wall 2122 are bonded together by a single-sided tape 5, that is, a part of the single-sided tape is attached to the side wall 2122, and another portion is attached to the land 213, thereby forming a receiving space.
  • the backlight module 100 may further include a light source 10 disposed on a circumferential outer side of the light guide plate 3 to provide backlight.
  • the light emitted by the light source is incident into the light guide plate 3.
  • the light source can be powered by a DC power source, and has a long service life and high brightness.
  • the light source can be cold Cathode fluorescent tubes (CCFLs, Cold Cathode Fluorescent Lamps), hot cathode fluorescent tubes, light emitting diodes (LEDs), and electroluminescent sheets (EL, Electroluminescence).
  • the light guide plate 3 when the light emitted from the light source 10 enters the light guide plate 3, a part of the light directly reaches the light exit surface 31 of the light guide plate 3, and the other part of the incident light is reflected by the reflection sheet 4 to reach the guide.
  • the light-emitting surface 31 of the light plate 3 sequentially reaches the diffusion sheet 23, the second prism sheet 22, and the first prism sheet 21 through the light emitted from the light-emitting surface 31, and finally enters the display panel (not shown).
  • the reflective sheet 4 is a reflective sheet having high reflectivity for improving the front view brightness of the backlight module 100 when a certain light source is output. It can be understood that, as shown in FIG. 4, in order to preferably reduce light leakage, the circumferential outer side surface of the light guide plate 3 without the light source may be coated with the reflective coating 6 to prevent light from the edge region of the light guide plate 3. Leak out to improve the display.
  • the reflective sheet 4 is a white reflective sheet or a silver reflective sheet, the surface of which is coated with a reflective layer, and the coated reflective layer is made of a reflective material having a reflectance of 50% or more. Improve the reflection effect.
  • the light guide plate 3 is made of a substrate of a polymethyl methacrylate (PMMA)/polycarbonate (PC), which is used to convert a line source into a surface source.
  • PMMA polymethyl methacrylate
  • PC polycarbonate
  • the inner side of the sidewall of the first prism sheet 21 is coated with a reflective layer (not shown), and the reflective layer can reflect light incident on the surface thereof back into the light guide plate to further enhance the display effect. .
  • the light guide plate 3 and the reflective sheet 4, the light guide plate 3 and the optical film group 20 should be in seamless contact, so that the overall thickness of the backlight module 100 can be reduced. Can also improve the display quality.
  • liquid crystal display and the backlight module 100 can be applied to any product or component having a display function, such as an electronic paper, a television, a mobile phone, a digital photo frame, a tablet computer, and the like.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

一种背光模组（100），包括光学膜片组（20）、导光板（3）、反射片（4），光学膜片组（20）包括第一棱镜片（21），第一棱镜片（21）包括显示区（211）、两个侧壁（212）、接合区（213），显示区（211）与反射片（4）相对设置，侧壁（212）由显示区（211）向下延伸而成，侧壁（212）连接于显示区（211）和接合区（213）之间，以形成收容空间，导光板（3）和反射片（4）彼此层叠设置于收容空间中，且导光板（3）位于反射片（4）与光学膜片组（20）之间，反射片（4）位于导光板（3）与接合区（213）之间。通过将第一棱镜片（21）延伸分为多个区域，第一棱镜片（21）可弯折以固定导光板（3）和反射片（4），解决了背光模组的整体厚度偏厚的技术问题，达到减小了背光模组（100）的整体厚度，实现窄边框设计的技术效果。

Description

背光模组及液晶显示器
本发明要求2015年6月26日递交的发明名称为“背光模组及液晶显示器”的申请号201510364198.6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技术领域，尤其涉及一种背光模组及一种具有所述背光模组的液晶显示器。
背景技术
随着背光显示技术的不断发展，显示装置如液晶显示器(Liquid Crystal Display，LCD)作为显示部件已经广泛应用于移动电话、数码相机、个人数字助理(Personal Digital Assistant，PDA)等电子产品中。随着电子产品的边框越来越窄及行业技术的不断进步，LCD画面显示的大尺寸及边框薄型化越来越成为市场的主流需求。
背光模组作为液晶显示器中的一个重要部件，其边框化设计也成为了一种趋势，窄边框意味着在相同尺寸的屏幕下所能看到的画面面积更大视觉效果好。现有的背光模组通常包括：导光板、设置于所述导光板周围的胶框、柔性电路板、光学膜片以及遮光胶带，所述柔性电路板通过所述遮光胶带固定于所述导光板和胶框上，所述光学膜片通过遮光胶带固定在胶框上。
这种背光模组至少存在如下问题：
由于胶框自身存在一定的厚度，这必然会增加背光模组的厚度，进而增加了液晶显示器的整体厚度，如此不能满足市场的主流需要。此外，现有的背光模组需要的元件较多，结构复杂，增加了制造成本；而且，胶框与导光板的组装过程比较复杂繁琐，组装效率较低。
发明内容
本发明的目的在于提供一种背光模组，具有背光模组厚度小、组装过程简 单等优点。
本发明的另一个目的在于提供一种采用上述背光模组的液晶显示器。
为了实现上述目的，本发明实施方式提供如下技术方案：
本发明提供的背光模组，其中，包括光学膜片组、导光板、反射片，所述光学膜片组包括第一棱镜片，所述第一棱镜片包括显示区、两个侧壁、接合区，所述显示区与所述反射片相对设置，所述侧壁由所述显示区向下延伸而成，所述侧壁连接于所述显示区和所述接合区之间，以形成收容空间，所述导光板和所述反射片彼此层叠设置于所述收容空间中，且所述导光板位于所述反射片与所述光学膜片组之间，所述反射片位于所述导光板与所述接合区之间。
其中，所述显示区与所述侧壁交界处、所述接合区与所述侧壁交界处设有折线，便于所述第一棱镜片弯折。
其中，所述第一棱镜片的侧壁内侧涂覆有反射层，所述反射层可将入射到其表面的光反射回所述导光板内。
其中，所述接合区与其中一个所述侧壁为一体结构并向另一个所述侧壁延伸，所述接合区贴附于所述反射片底部。
其中，所述接合区数量为两个，其中一个所述接合区连接至所述侧壁之一者，另一个所述接合区连接至另一个所述侧壁，所述两个接合区分别自所述两个侧壁相向延伸，所述两个接合区贴附于所述反射片底部。
其中，所述两个接合区的自由端连接在一起，彼此相接触。
其中，所述两个接合区的自由端彼此隔离，分别贴附于反射片底部。
其中，所述光学膜片组还包括第二棱镜片和扩散片，所述第二棱镜片位于所述第一棱镜片与所述扩散片之间，所述扩散片贴合于所述导光板。
其中，所述导光板的一个周向外侧表面设有入光面，其余周向外侧表面涂覆有反射层，所述反射层可将入射到其表面的光反射回所述导光板内。
其中，包括背光模组，所述显示模组包括光学膜片组、导光板、反射片，所述光学膜片组包括第一棱镜片，所述第一棱镜片包括显示区、两个侧壁、接合区，所述显示区与所述反射片相对设置，所述侧壁由所述显示区向下延伸而成，所述侧壁连接于所述显示区和所述接合区之间，以形成收容空间，所述导 光板和所述反射片彼此层叠设置于所述收容空间中，且所述导光板位于所述反射片与所述光学膜片组之间，所述反射片位于所述导光板与所述接合区之间。
其中，所述显示区与所述侧壁交界处、所述接合区与所述侧壁交界处设有折线，便于所述第一棱镜片弯折。
其中，所述第一棱镜片的侧壁内侧涂覆有反射层，所述反射层可将入射到其表面的光反射回所述导光板内。
其中，所述接合区与其中一个所述侧壁为一体结构并向另一个所述侧壁延伸，所述接合区贴附于所述反射片底部。
其中，所述接合区数量为两个，其中一个所述接合区连接至所述侧壁之一者，另一个所述接合区连接至另一个所述侧壁，所述两个接合区分别自所述两个侧壁相向延伸，所述两个接合区贴附于所述反射片底部。
其中，所述两个接合区的自由端连接在一起，彼此相接触。
其中，所述两个接合区的自由端彼此隔离，分别贴附于反射片底部。
其中，所述光学膜片组还包括第二棱镜片和扩散片，所述第二棱镜片位于所述第一棱镜片与所述扩散片之间，所述扩散片贴合于所述导光板。
其中，所述导光板的一个周向外侧表面设有入光面，其余周向外侧表面涂覆有反射层，所述反射层可将入射到其表面的光反射回所述导光板内。
本发明实施例具有如下优点或有益效果：
在本发明实施例的背光模组中，采用将所述光学膜片组中的第一棱镜片延伸分为多个区域，使得第一棱镜片可弯折以固定导光板和反射片，从而省去了胶框的技术方案，解决了背光模组的整体厚度偏厚的技术问题，达到减小了所述背光模组的整体厚度，实现了窄边框设计的技术效果。此外，由于本发明所述背光模组的结构简单，不但降低了制造成本，而且整个背光模组的组装过程更加便捷，大大提高了组装效率。
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是本发明第一个实施例的背光模组的结构简图；
图2是本发明实施例的背光模组的局部示意图；
图3是本发明第二个实施例的背光模组的结构简图；
图4是本发明第三个实施例的背光模组的结构简图
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做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，本发明实施例的背光模组100可为液晶背光模组，包括光学膜片组20、导光板3、反射片4，所述光学膜片组20包括第一棱镜片21，所述棱镜片的作用是凝聚光线、提高正视亮度，所述第一棱镜片21包括显示区211、由所述显示区211向下延伸而成两个侧壁212、接合区213，所述显示区211与所述反射片4相对设置，所述侧壁212连接于所述显示区211和所述接合区213之间，以形成收容空间，所述光学膜片组20设置于所述导光板3上，用于对从导光板3的出射的光线进行处理，使得从背光模组100出射的光线的强度较大且较为均匀，所述导光板3和所述反射片4彼此层叠设置于所述收容空间中，且所述导光板3位于所述反射片4与所述光学膜片组20之间，所述反射片4位于所述导光板3与所述接合区213之间。较佳地，所述导光板3及所述反射片4相互对齐。
通过将所述第一棱镜片21延伸分为显示区211、侧壁212、接合区213，并弯折所述第一棱镜片21用于固定导光板3和反射片4，从而省去了胶框，如此不但消除了该背光模组100组装过程存在的组装间隙，进而减小了所述背光模组100的整体厚度，实现了窄边框设计。此外，由于所述背光模组100的结构简单，不但降低了制造成本，而且整个背光模组100的组装过程更加便 捷，大大提高了组装效率。
进一步的，请参阅图2，所述第一棱镜片21设有折线210，折线210设于显示区211与所述侧壁212交界处以及所述接合区213与所述侧壁212交界处，使得第一棱镜片21更加便于弯折。
进一步的，请参阅图1，所述光学膜片组20还包括第二棱镜片22及扩散片23。第一棱镜片21、第二棱镜片22及扩散片23从上至下依次重叠排列，即，所述第二棱镜片22位于所述第一棱镜片21与所述扩散片23之间，所述扩散片23贴合于所述导光板3，扩散片23用于对入射光线进行扩散来防止干涉现象。
在本发明的第一个实施例中，如图1所示，两个侧壁向中间延伸而成两个接合区213，所述两个接合区213分别与一个侧壁为一体结构，即其中一个所述接合区连接至所述其中一个侧壁，另一个所述接合区连接至另一个所述侧壁，所述两个接合区分别自所述两个侧壁相向延伸，所述两个接合区213贴附于所述反射片4底部，形成一个收容空间。本实施例中所述两个接合区213的自由端可以通过单面胶5连接在一起。本发明的第二个实施例中，如图3所示，所述两个接合区213也可以相互之间不连接，两个接合区分别通过单面胶5贴附在反射片4底面，所述单面胶5一部分贴附在反射片4底面，另一部分贴附在所述反射区213上。
显而易见的，所述接合区213还可以通过双面胶或热固胶贴附在反射片4底部。
请参阅图4，本发明的第三个实施例中，所述接合区213由其中一个2121侧壁向另一个侧壁2122延伸而成，接合区213与侧壁2121为一体结构，所述接合区213与侧壁2122通过单面胶5粘结在一起，即所述单面胶一部分贴附在侧壁2122上，另一部分贴附在所述接合区213上，依此形成一个收容空间。
可以理解的是，如图4所示，在本发明的其他实施例中，所述背光模组100还可包括光源10，该光源10设置于所述导光板3的一个周向外侧以提供背光，该光源发射的光入射到该导光板3内。较佳地，该光源可以采用直流电源供电，并且具有较长的使用寿命，亮度高等特点。本实施例中光源可以为冷 阴极荧光管(CCFL，Cold Cathode Fluorescent Lamp)、热阴极荧光管、发光二极管(LED，Light Emitting Diode)及电致发光片(EL，Electroluminescence)等。具体到背光模组的光线传递路径，当光源10射出的光线射入导光板3后，一部分光直接到达导光板3的出光面31，另一部分的入射光经由反射片4进行反射后，到达导光板3的出光面31，经由出光面31出来的光线依次到达所述扩散片23、所述第二棱镜片22和第一棱镜片21，并最终入射至显示面板(图未示)。
较佳的，所述反射片4为具有高反射率的反射片，用于在一定的光源输出时提高背光模组100的正视亮度。可以理解的是，如图4所示为了较佳地减少漏光，可将所述导光板3未设置光源的周向外侧表面涂覆反射涂层6，以防止光从该导光板3的边缘区域漏出，提升显示效果。以提供背光在本发明的实施例中，所述反射片4为白反射片或银反射片，其表面涂覆有反射层，涂覆的反射层选用反射率在50％以上的反射材料，以提高反射效果。
进一步的，所述导光板3采用光学级亚克力(Polymethylmethacrylate，PMMA)/聚碳酸酯(Polycarbonate，PC)为基材，其用于将线光源转变为面光源。
较佳的，所述第一棱镜片21的侧壁内侧涂覆有反射层(图未示)，所述反射层可将入射到其表面的光反射回所述导光板内，进一步提升显示效果。
较佳的，所述导光板3与所述反射片4、所述导光板3与所述光学膜片组20之间应该无缝接触，如此不仅可以减小所述背光模组100的整体厚度，还可以提高显示品质。
可以理解的是，所述液晶显示器及所述背光模组100可以应用于电子纸、电视、移动电话、数码相框、平板电脑等任何具有显示功能的产品或部件。
以上所述的实施方式，并不构成对该技术方案保护范围的限定。任何在上述实施方式的精神和原则之内所作的修改、等同替换和改进等，均应包含在该技术方案的保护范围之内。

Claims (18)

  1. 一种背光模组，其中，包括光学膜片组、导光板、反射片，所述光学膜片组包括第一棱镜片，所述第一棱镜片包括显示区、两个侧壁、接合区，所述显示区与所述反射片相对设置，所述侧壁由所述显示区向下延伸而成，所述侧壁连接于所述显示区和所述接合区之间，以形成收容空间，所述导光板和所述反射片彼此层叠设置于所述收容空间中，且所述导光板位于所述反射片与所述光学膜片组之间，所述反射片位于所述导光板与所述接合区之间。
  2. 如权利要求1所述的背光模组，其中，所述显示区与所述侧壁交界处、所述接合区与所述侧壁交界处设有折线，便于所述第一棱镜片弯折。
  3. 如权利要求2所述的背光模组，其中，所述第一棱镜片的侧壁内侧涂覆有反射层，所述反射层可将入射到其表面的光反射回所述导光板内。
  4. 如权利要求1所述的背光模组，其中，所述接合区与其中一个所述侧壁为一体结构并向另一个所述侧壁延伸，所述接合区贴附于所述反射片底部。
  5. 如权利要求1所述的背光模组，其中，所述接合区数量为两个，其中一个所述接合区连接至所述侧壁之一者，另一个所述接合区连接至另一个所述侧壁，所述两个接合区分别自所述两个侧壁相向延伸，所述两个接合区贴附于所述反射片底部。
  6. 如权利要求5所述的背光模组，其中，所述两个接合区的自由端连接在一起，彼此相接触。
  7. 如权利要求5所述的背光模组，其中，所述两个接合区的自由端彼此隔离，分别贴附于反射片底部。
  8. 如权利要求1所述的背光模组，其中，所述光学膜片组还包括第二棱镜 片和扩散片，所述第二棱镜片位于所述第一棱镜片与所述扩散片之间，所述扩散片贴合于所述导光板。
  9. 如权利要求1所述的背光模组，其中，所述导光板的一个周向外侧表面设有入光面，其余周向外侧表面涂覆有反射层，所述反射层可将入射到其表面的光反射回所述导光板内。
  10. 一种液晶显示器，其中，包括背光模组，所述显示模组包括光学膜片组、导光板、反射片，所述光学膜片组包括第一棱镜片，所述第一棱镜片包括显示区、两个侧壁、接合区，所述显示区与所述反射片相对设置，所述侧壁由所述显示区向下延伸而成，所述侧壁连接于所述显示区和所述接合区之间，以形成收容空间，所述导光板和所述反射片彼此层叠设置于所述收容空间中，且所述导光板位于所述反射片与所述光学膜片组之间，所述反射片位于所述导光板与所述接合区之间。
  11. 如权利要求10所述的液晶显示器，其中，所述显示区与所述侧壁交界处、所述接合区与所述侧壁交界处设有折线，便于所述第一棱镜片弯折。
  12. 如权利要求11所述的液晶显示器，其中，所述第一棱镜片的侧壁内侧涂覆有反射层，所述反射层可将入射到其表面的光反射回所述导光板内。
  13. 如权利要求10所述的液晶显示器，其中，所述接合区与其中一个所述侧壁为一体结构并向另一个所述侧壁延伸，所述接合区贴附于所述反射片底部。
  14. 如权利要求10所述的液晶显示器，其中，所述接合区数量为两个，其中一个所述接合区连接至所述侧壁之一者，另一个所述接合区连接至另一个所述侧壁，所述两个接合区分别自所述两个侧壁相向延伸，所述两个接合区贴附于所述反射片底部。
  15. 如权利要求14所述的液晶显示器，其中，所述两个接合区的自由端连接在一起，彼此相接触。
  16. 如权利要求14所述的液晶显示器，其中，所述两个接合区的自由端彼此隔离，分别贴附于反射片底部。
  17. 如权利要求10所述的液晶显示器，其中，所述光学膜片组还包括第二棱镜片和扩散片，所述第二棱镜片位于所述第一棱镜片与所述扩散片之间，所述扩散片贴合于所述导光板。
  18. 如权利要求10所述的液晶显示器，其中，所述导光板的一个周向外侧表面设有入光面，其余周向外侧表面涂覆有反射层，所述反射层可将入射到其表面的光反射回所述导光板内。
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