WO2014012267A1 - 液晶显示装置及其背光模组和框架单元 - Google Patents

液晶显示装置及其背光模组和框架单元 Download PDF

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Publication number
WO2014012267A1
WO2014012267A1 PCT/CN2012/079104 CN2012079104W WO2014012267A1 WO 2014012267 A1 WO2014012267 A1 WO 2014012267A1 CN 2012079104 W CN2012079104 W CN 2012079104W WO 2014012267 A1 WO2014012267 A1 WO 2014012267A1
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WIPO (PCT)
Prior art keywords
liquid crystal
support portion
optical member
backlight module
elastic fastener
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/CN2012/079104
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English (en)
French (fr)
Inventor
郭仪正
萧宇均
阙成文
张庞岭
李德华
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.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen 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.)
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Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/578,615 priority Critical patent/US8780293B2/en
Publication of WO2014012267A1 publication Critical patent/WO2014012267A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a liquid crystal display device, a backlight module thereof and a frame unit.
  • a liquid crystal display is a common display device.
  • a liquid crystal display device is assembled by a back plate, a plastic frame, an optical member, a liquid crystal panel, and the like.
  • the plastic frame is an indispensable part of the liquid crystal display device, and the function of the plastic frame is to accommodate, fix and protect the optical component and the liquid crystal panel.
  • the existing plastic frame is expensive to manufacture.
  • the cost of the entire liquid crystal display device is greatly increased due to the high cost of the plastic frame.
  • the technical problem to be solved by the embodiments of the present invention is to provide a liquid crystal display device, a backlight module thereof, and a frame unit.
  • the elastic fastener in the frame unit can replace the existing plastic frame structure, thereby solving the prior art.
  • the cost of the plastic frame is high and the assembly is inconvenient.
  • a technical solution adopted by the present invention is to provide a frame unit for a backlight module, including a back frame and an elastic fastener.
  • the back frame includes a connected bottom plate and a side wall for carrying the optical component of the backlight module.
  • the elastic fastener includes an integrally formed first support portion, a second support portion, and a side plate connecting the first support portion and the second support portion.
  • the first supporting portion is in contact with the bottom plate
  • the second supporting portion is for supporting the liquid crystal panel
  • the first supporting portion and the second supporting portion are cooperatively formed with the positioning groove to clamp the side of the optical member
  • the second supporting portion Located between the liquid crystal panel and the optical member, the side plate is disposed corresponding to the side wall.
  • the material of the elastic fastener is silica gel or rubber.
  • the elastic fastener is L-shaped, and the L-shaped elastic fastener is disposed on the corner of the optical component and simultaneously clamps the two side edges of the adjacent corners through the positioning groove.
  • the positioning groove is U-shaped and has an interference fit with the side of the optical component.
  • the bottom plate comprises a convex portion and a groove portion between the convex portion and the side wall, the first support portion is disposed in the groove portion, and the surface of the first support portion away from the groove portion is flush with the convex portion .
  • the side plate and the side wall are disposed in close contact with each other.
  • the back frame is formed by splicing a plurality of bottom plates and side walls.
  • the frame unit comprises a back frame and an elastic fastener.
  • the back frame includes a connected bottom plate and side walls for carrying optical components.
  • the elastic fastener includes an integrally formed first supporting portion, a second supporting portion and a side plate connecting the first supporting portion and the second supporting portion, the first supporting portion abutting the bottom plate, and the second supporting portion is for supporting the liquid crystal panel.
  • the first supporting portion and the second supporting portion cooperate to form a positioning groove for clamping the side of the optical member, the second supporting portion is located between the liquid crystal panel and the optical member, and the side plate is disposed corresponding to the side wall.
  • the optical member includes a light guide plate and an optical film stacked in a stack, and the light guide plate abuts against the first support portion, and the optical film abuts against the second support portion.
  • the material of the elastic fastener is silica gel or rubber.
  • the elastic fasteners are plural, and the plurality of elastic fasteners are spaced apart from the plurality of side edges of the optical component.
  • the elastic fastener is L-shaped, and the L-shaped elastic fastener is disposed on the corner of the optical component and simultaneously clamps the two side edges of the adjacent corners through the positioning groove.
  • the positioning groove is U-shaped and has an interference fit with the side of the optical component.
  • another technical solution adopted by the present invention is to provide a liquid crystal display device including a liquid crystal panel and the above backlight module.
  • the second support portion is interposed between the optical film and the liquid crystal panel to support the liquid crystal panel.
  • the material of the elastic fastener is silica gel or rubber.
  • the positioning groove is U-shaped and has an interference fit with the side of the optical component.
  • the frame unit of the embodiment of the invention comprises a back frame and an elastic fastener, wherein the positioning groove of the elastic fastener is used for receiving the optical component and supporting the liquid crystal panel, and therefore, the elastic fastener can replace the existing plastic frame.
  • the elastic fastener is made of a low-cost material and the manufacturing process is relatively simple, the elastic fastener can effectively reduce the cost of the entire frame unit and the liquid crystal display device, and is a liquid crystal display device. The assembly process brings convenience.
  • FIG. 1 is a partial structural schematic view showing main components of a liquid crystal display device according to a first embodiment of the present invention
  • FIG. 2 is a schematic structural view of an elastic fastener according to an embodiment of the present invention.
  • Figure 3 is a cross-sectional view of the elastic fastener of Figure 2;
  • FIG. 4 is a schematic structural view of an elastic fastener according to another embodiment of the present invention.
  • FIG. 5 is a schematic view showing the assembling manner of the elastic fastener and the optical member according to the embodiment of the present invention.
  • Figure 6 is an enlarged schematic view showing the structure of a portion VI of the elastic fastener and the optical member shown in Figure 5;
  • FIG. 7 is a schematic view showing an assembly manner of a liquid crystal display device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural view showing the assembly of the liquid crystal display device shown in FIG. 7.
  • FIG. 8 is a schematic structural view showing the assembly of the liquid crystal display device shown in FIG. 7.
  • a frame unit for a backlight module includes a back frame 10 and an elastic fastener 20, and together with the optical member 30 and the liquid crystal panel 40 constitutes a liquid crystal display device (obviously, Only the main components related to the present invention in the liquid crystal display device are listed here. The specific structure of the back frame 10 and the elastic fastener 20 will be separately described below.
  • the back frame 10 includes a bottom plate 101 and side walls 102 that are connected. Specifically, the side walls 102 are disposed on the bottom plate 101, and the bottom plate 101 supports the side walls 102.
  • the bottom plate 101 and the side wall 102 may be integrally formed at the time of manufacture, or may be separately formed and then connected by means of rivets, screws, etc., which are not limited herein.
  • the bottom plate 101 can be, but is not limited to, a plate-like structure for carrying the optical component 30 of the backlight module. It is to be noted that the specific shape of the bottom plate 10 may be a rectangular parallelepiped, a cylinder, a step, or the like, as long as there is a supporting surface for carrying the optical member 30, which is not limited herein.
  • the bottom plate 101 includes a convex portion and a groove portion: the convex portion directly contacts the optical member 30 and supports the optical member 30, or is in contact with the optical member 30 through a flexible sheet such as a rubber pad (the flexible sheet can protect the optical member 30 from the surface thereof) Scratched) is not limited herein; and the groove portion is located between the convex portion and the side wall, and the space formed by the groove portion is for accommodating the elastic fastener 20, and obviously, the groove portion should be elastically fastened
  • the piece 20 corresponds to the setting. It can be seen from FIG. 1 that the connection between the convex portion and the groove portion is a bent shape, and the bent shape may be a slope surface as shown in the drawing, or may be a vertically downward vertical surface, which is not limited herein. .
  • the bottom plate 101 and the side wall 102 may be integrally formed at the time of production, or may be separately formed and then joined by rivets, screws, or the like. It is also not difficult to understand that the back frame 10 may be integrally formed or may be formed by splicing a plurality of bottom plates 101 and side walls 102, which are not limited herein.
  • the back frame 10 may be an integrally formed quadrilateral frame (including a single bottom plate 101 and the side wall 102 connected thereto); or the bottom plate 101 and the side wall 102 may be first composed of a "back frame assembly", and then Further, a plurality of "back frame components" are formed into the back frame 10, which are not easily described herein because they are easily conceivable by those skilled in the art.
  • the elastic fastener 20 includes a first support portion 201, a second support portion 202, and a side plate 203 connecting the first support portion 201 and the second support portion 202.
  • the elastic fasteners 20 may be integrally formed, or may be formed by splicing the first support portion 201, the second support portion 202, and the side plates 203, which are not limited herein.
  • the splicing manner may be through rivets, screws, etc., and is not easily described herein because it is easily understood by those skilled in the art.
  • the elastic fastener 20 has the characteristics of simple structure and simple manufacturing process, and is within the scope that can be understood by those skilled in the art. Therefore, the manufacturing process of the elastic fastener 20 brings convenience and lowers the cost of manufacturing.
  • the elastic fastener 20 is placed on the groove portion of the back frame 10.
  • the side plate 203 is disposed in contact with the side wall 102, and the lower surface of the first support portion 201 abuts against the bottom plate 101.
  • the upper surface of the first support portion 201 is flush with the convex portion of the bottom plate 10, so that the optical member 30 such as the light guide plate can be horizontally placed.
  • the second support portion 202 is for supporting the liquid crystal panel 40 , and the second support portion 202 and the first support portion 201 cooperate to form a positioning groove 204 that clamps the optical member 30 .
  • the upper portion of the second supporting portion 202 is used for placing the liquid crystal panel 40, and the central control region between the second supporting portion 202 and the first supporting portion 201 accommodates the side of the optical member 30 in an interference fit manner.
  • the optical member 30 is fixed in the positioning groove 204.
  • the positioning groove 204 is disposed in a U shape, and the positioning groove 204 may be disposed in other shapes as long as the optical member 30 can be accommodated, and the present invention is not limited to the specific structure thereof.
  • the side plate 203 of the elastic fastener 20 is disposed corresponding to the side wall 102 of the back frame 10. It is not difficult to understand that the corresponding arrangement includes multiple ways: for example, both are flat and attached.
  • a positioning post is disposed on the side plate 203, and a positioning hole matching the positioning post is disposed on the upper side wall 102 to fix the two; or the side plate 203 is spaced apart from the side wall 102, and is disposed at two
  • a gasket such as a rubber pad is inserted between the two to stick the two together; other methods can be used as long as it is considered by those skilled in the art without any creative work, and belongs to the protection scope of the present invention. .
  • first support portion 201 of the elastic fastener 20 and the bottom plate 101 of the back frame 10 can also be correspondingly arranged in various ways.
  • the elastic fastener 20 functions to house the optical member 30 such as a light guide plate to fix and protect the optical member 30. Therefore, the elastic fasteners 20 are generally selected to be made of a flexible material.
  • the material of the elastic fastener 20 is silica gel or rubber, and the silicone rubber or rubber is lower in manufacturing cost than the conventional plastic frame material. Therefore, the elastic fastener 20 of the present invention has a low cost and can further reduce the cost of the entire frame unit. Moreover, since the frame unit is an essential component for manufacturing the backlight module and the liquid crystal display device, the low cost silicone or rubber of the elastic fastener 20 can reduce the cost of the entire liquid crystal display device.
  • the elastic fastener 20 can also be made of other flexible materials, as long as it has a relatively low cost, and can also recycle common industrial materials such as ordinary plastic or rubber. To save costs. Therefore, the present embodiment is merely illustrative of the preferred embodiment and is not intended to define the material of the elastic fastener 20. In other words, for the moment, the use of silicone or rubber to make the elastic fastener 20 is the best and not the only option.
  • the embodiment includes a plurality of elastic fasteners 20 , and a plurality of elastic fasteners are disposed on the plurality of side edges of the optical component 30 to face the optical component 30 from different positions. Positioning for better positioning.
  • the elastic fastener 20 can also be disposed in an L shape, and the L-shaped elastic fastener 20 is disposed on the corner of the optical member 30. At this time, the positioning groove 204 simultaneously clamps the two sides of the adjacent corners. .
  • two U-shaped elastic fasteners 20 may be provided, and the two opposite sides of the optical member 30 are respectively engaged.
  • this embodiment does not limit the number and shape of the resilient fasteners 20, as the combination of different numbers and shapes of elastic fasteners 20 can accommodate, secure and protect the optical components 30 and support the liquid crystals.
  • the role of the panel 40 For example, if material is to be saved as much as possible and cost is reduced, four L-shaped elastic fasteners 20 can be provided and placed on the four corners of the optical member 30, respectively; if a more stable installation or In order to better protect the optical component 30, a plurality of elongated elastic fasteners 20 may be disposed on the respective sides of the optical component 30 on the basis of the four L-shaped elastic fasteners 20 (eg, Figure 5).
  • the assembly process of the liquid crystal display device will now be briefly described.
  • the main components of the liquid crystal display device include a light source (not shown), a frame unit, an optical member 30, and a liquid crystal panel 40.
  • a light source not shown
  • a frame unit for illustrative purposes only and is not intended to limit the present invention or the invention.
  • the optical members 30 are first stacked in order;
  • the aligned optical member 30 is inserted into the positioning groove 204 to engage the elastic fastener 20 and the optical member 30.
  • the elastic fastener 20 may be disposed on the side of the optical member 30. It can also be disposed on the corners of the optical member 30, and the number of the elastic fasteners 20 can also be flexibly selected;
  • the assembled elastic fastener 20 and the optical member 30 are placed in the back frame 10, specifically, the side plate 203 of the elastic fastener 20 is attached to the side wall 102 of the back frame 10, so that The first supporting portion 201 of the elastic fastener 20 abuts against the bottom plate 101 of the back frame 10, and the optical member 30 is supported by the first supporting portion 201 and the convex portion;
  • liquid crystal panel 40 is placed on the second support portion 202.
  • the above merely enumerates the steps associated with the present invention and is not a complete assembly step.
  • the assembly process of the liquid crystal display device obviously includes other steps, such as fixing the liquid crystal panel 40 or the like by another plastic frame or the like, which is not described herein because it is well known to those skilled in the art.
  • the frame unit of the first embodiment of the present invention accommodates the optical member 30 and the supporting liquid crystal panel 40 by the positioning groove 204 of the elastic fastener 20, and replaces the existing plastic frame structure with the elastic fastener 20.
  • the elastic fastener 20 is made of a lower cost material, and the manufacturing process line is simple and belongs to the prior art, so that it has the characteristics of low cost, convenient manufacture, and convenient assembly. Therefore, the use of the elastic fastener 20 can reduce the cost of the frame unit and the entire liquid crystal display device, and brings convenience to the assembly process.
  • a backlight module comprising an optical component and a frame unit in the previous embodiment.
  • the optical component comprises a light guide plate and an optical film stacked in a stack, and the light guide plate is located below the optical film. It is easy to understand that the light guide plate abuts the first support portion, and the optical film abuts against the second support portion. Since the structure, functions and the like of the frame unit have been specifically described in the previous embodiment, no further description is made here.
  • a liquid crystal display device including a liquid crystal panel and a backlight module as described above is provided, and the structure and function of the frame unit and the backlight module are already in the The previous embodiment has been specifically described, and will not be described herein.

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

Description

液晶显示装置及其背光模组和框架单元
【技术领域】
本发明涉及液晶显示领域，具体是涉及一种液晶显示装置及其背光模组和框架单元。
【背景技术】
液晶显示器是一种常见的显示装置，众所周知，液晶显示装置是通过背板、胶框、光学部材和液晶面板等组装而成。其中，胶框是液晶显示装置中必不可少的部分，而胶框的作用是收容、固定以及保护光学部材和液晶面板。
然而，现有的胶框的制作成本较高。同时，由于液晶显示装置中一般都需要配备多个胶框，因此，整个液晶显示装置的成本也会因为胶框的高成本而大幅度增加。
【发明内容】
本发明实施例主要解决的技术问题是提供一种液晶显示装置及其背光模组和框架单元，该框架单元中的弹性紧固件能够替代现有的胶框结构，从而能够解决现有技术中胶框成本高和组装不方便的问题。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种用于背光模组的框架单元，包括背框和弹性紧固件。背框包括相连接的底板和侧壁，底板用于承载背光模组的光学部材。弹性紧固件包括一体成型的第一支撑部、第二支撑部以及连接第一支撑部和第二支撑部的侧板。其中，第一支撑部与底板相抵接，第二支撑部用于支撑液晶面板，且第一支撑部和第二支撑部之间配合形成定位槽以夹持光学部材的侧边，第二支撑部位于液晶面板和光学部材之间，侧板与侧壁对应设置。
其中，弹性紧固件的材料为硅胶或橡胶。
其中，弹性紧固件为多个，且多个弹性紧固件间隔设置于光学部材的多条侧边上。
其中，弹性紧固件为L型，L型的弹性紧固件设于光学部材的边角上并通过定位槽同时夹持邻近边角的两条侧边。
其中，定位槽为U型并与光学部材的侧边过盈配合。
其中，底板包括凸起部以及位于凸起部和侧壁之间的凹槽部，第一支撑部设于凹槽部内，且第一支撑部远离凹槽部的面与凸起部相平齐。
其中，侧板与侧壁贴合设置。
其中，底板和侧壁为多个，背框由多个底板和侧壁拼接而成。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种背光模组，该背光模组包括光学部材和框架单元。其中，框架单元包括背框和弹性紧固件。背框包括相连接的底板和侧壁，底板用于承载光学部材。弹性紧固件包括一体成型的第一支撑部、第二支撑部以及连接第一支撑部和第二支撑部的侧板，第一支撑部与底板相抵接，第二支撑部用于支撑液晶面板，第一支撑部和第二支撑部之间配合形成定位槽以夹持光学部材的侧边，第二支撑部位于液晶面板和光学部材之间，侧板与侧壁对应设置。光学部材包括层叠设置的导光板和光学膜片，导光板与第一支撑部相抵接，光学膜片与第二支撑部相抵接。
其中，弹性紧固件的材料为硅胶或橡胶。
其中，弹性紧固件为多个，多个弹性紧固件间隔设置于光学部材的多条侧边上。
其中，弹性紧固件为L型，L型的弹性紧固件设于光学部材的边角上并通过定位槽同时夹持邻近边角的两条侧边。
其中，定位槽为U型并与光学部材的侧边过盈配合。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种液晶显示装置，包括液晶面板和上述的背光模组。其中，第二支撑部夹设于光学膜片与液晶面板之间以支撑液晶面板。
其中，弹性紧固件的材料为硅胶或橡胶。
其中，定位槽为U型并与光学部材的侧边过盈配合。
本发明实施例的框架单元包括背框和弹性紧固件，其中，弹性紧固件的定位槽用以收容光学部材和支撑液晶面板，因此，该弹性紧固件可以替换现有的胶框。另外，由于该弹性紧固件采用低成本的材料制成，并且制作工艺相对简单，故而采用该弹性紧固件能够有效的降低了整个框架单元和液晶显示装置的成本，并且为液晶显示装置的组装过程带来了便利。
【附图说明】
图1是本发明第一实施例液晶显示装置的主要部件的部分结构示意图；
图2是本发明一实施例弹性紧固件的结构示意图；
图3是图2所示弹性紧固件的剖视图；
图4是本发明另一实施例弹性紧固件的结构示意图；
图5是本发明实施例弹性紧固件与光学部材的组装方式示意图；
图6是图5所示弹性紧固件与光学部材的组装时的Ⅵ部分结构放大示意图；
图7是本发明实施例液晶显示装置的组装方式示意图；以及
图8是图7所示液晶显示装置组装完成的结构示意图。
【具体实施方式】
下面结合附图和实施例，对本发明作进一步的详细描述。特别指出的是，以下实施例仅用于说明本发明，但不对本发明的范围进行限定。
参阅图1，在本发明的第一实施例中，用于背光模组的框架单元包括背框10和弹性紧固件20，并和光学部材30以及液晶面板40共同组成液晶显示装置（显然，这里仅仅列出了液晶显示装置中与本发明相关的主要组成部分）。下面分别介绍背框10和弹性紧固件20的具体结构。
背框10包括相连接的底板101和侧壁102，具体地说，侧壁102设置在底板101上、底板101支撑着侧壁102。底板101和侧壁102可以在制作的时候便一体成型，也可以分别制作然后通过铆钉、螺钉等方式进行连接，这里不作限定。
其中，底板101可以但不限于为一板状结构，其用于承载背光模组的光学部材30。值得一提的是，底板10的具体形状可以为长方体、圆柱、梯台等，只要有一个支撑面用来承载光学部材30即可，这里不作限定。底板101包括凸起部和凹槽部：凸起部直接与光学部材30接触并支撑光学部材30，或者通过胶垫等柔性薄片与光学部材30接触（柔性薄片可以保护光学部材30，防止其表面被刮伤），这里不作限定；而凹槽部位于凸起部和侧壁之间，凹槽部所形成的空间用于容置弹性紧固件20，显然，凹槽部应该与弹性紧固件20对应设置。从图1中可以看出，凸起部和凹槽部的连接处为一折弯形状，折弯形状可以为图中所示的坡面，也可以为垂直向下的垂面，这里不作限定。
如前所述，底板101和侧壁102可以在制作的时候便一体成型，也可以分别制作然后通过铆钉、螺钉等方式进行连接。同样不难理解的是，背框10可以是一体成型的，也可以是由多个底板101和侧壁102拼接而成的，这里不作限定。换句话说，背框10可以为一体成型的四边形框架（包括一整块底板101和与之相连接的侧壁102）；也可以先由底板101和侧壁102组成“背框组件”，然后再将多个“背框组件”组成背框10，由于属于本领域技术人员很容易想到的范围，这里不进行具体描述。
请一并参阅图2至图4，弹性紧固件20包括第一支撑部201、第二支撑部202以及连接第一支撑部201和第二支撑部202的侧板203。显然，弹性紧固件20可以是一体成型的，也可以由第一支撑部201、第二支撑部202以及侧板203拼接而成，这里不作限定。而其拼接方式可以是通过铆钉、螺钉等，由于属于本领域技术人员很容易理解的范围，这里不作赘述。
不难发现，弹性紧固件20具有结构简单的特点，且其制作工艺简单，属于现有技术人员能够理解的范围。因此，弹性紧固件20的制作过程为生产制造带来了便利并降低了成本。
可以看出，弹性紧固件20放置在背框10的凹槽部，此时，侧板203与侧壁102贴合设置，且第一支撑部201的下表面与底板101相抵接。第一支撑部201的上表面与底板10的凸起部相平齐，从而使导光板等光学部材30可以水平的放置。第二支撑部202用于支撑液晶面板40，且第二支撑部202和第一支撑部201相配合以形成夹持光学部材30的定位槽204。具体地说，第二支撑部202的上方用于放置液晶面板40，而第二支撑部202与第一支撑部201之间的中控区域以过盈配合的方式容置光学部材30的侧边，从而将光学部材30固定在定位槽204中。通常情况下，定位槽204设置为U型，而定位槽204也可以设置成其它形状，只要能够容置光学部材30即可，本发明不对其具体结构作限定。
这里有必要说明一下弹性紧固件20与背框10的对应关系。在本实施例中，弹性紧固件20的侧板203与背框10的侧壁102对应设置，不难理解的是，对应设置包括多种方式：比如两者均为一平面且以相贴合的方式连接；或者在侧板203上设置定位柱、在上侧壁102设置与定位柱相匹配的定位孔以将两者固定连接；或者侧板203与侧壁102间隔设置，并在两者之间插入胶垫等垫片以将两者粘贴在一起；还可以使其它方式，只要是本领域普通技术人员在不付出创造性劳动的前提下而想到的方式，均属于本发明的保护范围。
同理，弹性紧固件20的第一支撑部201与背框10的底板101之间也可以通过多种方式进行对应设置。
弹性紧固件20的作用是收容导光板等光学部材30，以固定和保护光学部材30。因此，弹性紧固件20一般都选择使用柔性材料制作。
在本实施例中，弹性紧固件20的材料为硅胶或橡胶，而硅胶或橡胶相比传统的胶框材料而言，其制造成本更低。因此，本发明的弹性紧固件20具有成本低的特点，并可以进一步降低整个框架单元的成本。又由于框架单元是制造背光模组以及液晶显示装置的必要组件，则弹性紧固件20的低成本硅胶或橡胶可以降低整个液晶显示装置的成本。
不难理解的是，在其它实施例中，弹性紧固件20也可以采用其它柔性材料制成，只要具有相对较低的成本即可，还可以通过回收利用普通塑胶或橡胶等常见的工业材料，以节省成本。因此，本实施例仅仅是列举最佳方案，而不是对弹性紧固件20的材料进行限定。换句话说，就目前而言，采用硅胶或橡胶制造弹性紧固件20是最佳而非唯一选择。
请参阅图5，进一步的说，本实施例中包括多个弹性紧固件20，多个弹性紧固件间隔设置于光学部材30的多条侧边上，以从不同的位置对光学部材30进行定位，从而起到更好的定位效果。特别是该弹性紧固件20也可以设置成L型，且L型弹性紧固件20设于光学部材30的边角上，此时，定位槽204同时夹持邻近边角的两条侧边。同样的，也可以设置2个U型弹性紧固件20，分别从光学部材30的两个对边进行卡合。
特别需要强调的是，本实施例不对弹性紧固件20的数量和形状作限定，因为不同数量和形状的弹性紧固件20的组合均可以达到容置、固定和保护光学部材30以及支撑液晶面板40的作用。举例来说，如果要尽可能的节省材料和降低成本，则可以提供4个L型的弹性紧固件20，并分别设置在光学部材30的四个边角上；如果要更稳定的安装或为了更好的保护光学部材30，则可以在4个L型弹性紧固件20的基础上，再设置若干个长条形弹性紧固件20卡合在光学部材30的各个侧边上（如图5所示）。
以上例子仅仅为了说明不同数量和形状的弹性紧固件20的组合均可以达到容置、固定和保护光学部材30以及支撑液晶面板40的作用，而不是对弹性紧固件20数量或形状等特征的限定。
为了方便理解，现在对液晶显示装置的组装过程进行简要的说明。请参阅图5到图8，在本实施例当中，液晶显示装置的主要组成部分包括光源（图未示）、框架单元、光学部材30和液晶面板40。值得一提的是，该组装过程只是为了说明和帮助理解，而不是对本实施例或本发明进行限定。以下为组装过程的简要步骤及其说明：
首先，先将光学部材30按照顺序层叠放置；
其次，将排列好的光学部材30插入定位槽204中，以使弹性紧固件20和光学部材30卡合连接，如前所述，弹性紧固件20可以设置在光学部材30的侧边上，也可以设置在光学部材30的边角上，且弹性紧固件20的数量也可以灵活的选择；
接着，将组装在一起的弹性紧固件20和光学部材30放置在背框10中，具体来说，使弹性紧固件20的侧板203与背框10的侧壁102相贴合，使弹性紧固件20的第一支撑部201与背框10的底板101相抵接，且光学部材30由第一支撑部201和凸起部共同支撑；
最后，将液晶面板40放置在第二支撑部202上。
值得一提的是，以上内容仅仅列举了与本发明相关的步骤，而并非是完整的组装步骤。液晶显示装置的组装过程显然还包括其他步骤，如通过另一胶框或其它方式来固定液晶面板40等，由于属于本领域技术人员很容易理解的现有技术，这里不作赘述。
本发明的第一实施例的框架单元通过弹性紧固件20的定位槽204来收容光学部材30和支撑液晶面板40，并用该弹性紧固件20替换现有的胶框结构。在本实施例中，弹性紧固件20采用成本较低的材料制成，且其制造工艺线对简单并属于现有技术，故而具有成本低、制造方便以及组装方便的特点。因此，采用该弹性紧固件20可以降低框架单元和整个液晶显示装置的成本，并且为组装过程带来了便利。
在本发明的另一实施例中，还提供一种背光模组，该背光模组包括光学部材和前一实施例中的框架单元。其中，光学部材包括层叠设置的导光板和光学膜片，且导光板位于光学膜片的下方。很容易理解，导光板与第一支撑部相抵接，而光学膜片与第二支撑部相抵接。由于框架单元的结构、功能等特征已经在前一实施例中进行了具体的描述，这里不作赘述。
在本发明的第三实施例中，还提供一种液晶显示装置，该液晶显示装置包括液晶面板和如前所述的背光模组，由于框架单元和背光模组的结构、功能等特征已经在前一实施例中进行了具体的描述，这里不作赘述。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (16)

  1. 一种用于背光模组的框架单元，其中，包括：
    背框，所述背框包括相连接的底板和侧壁，所述底板用于承载所述背光模组的光学部材；
    弹性紧固件，包括一体成型的第一支撑部、第二支撑部以及连接所述第一支撑部和所述第二支撑部的侧板，所述第一支撑部与所述底板相抵接，所述第二支撑部用于支撑液晶面板，所述第一支撑部和所述第二支撑部之间配合形成定位槽以夹持所述光学部材的侧边，所述第二支撑部位于所述液晶面板和所述光学部材之间，所述侧板与所述侧壁对应设置。
  2. 根据权利要求1所述的框架单元，其中，所述弹性紧固件的材料为硅胶或橡胶。
  3. 根据权利要求1所述的框架单元，其中，所述弹性紧固件为多个，多个所述弹性紧固件间隔设置于所述光学部材的多条侧边上。
  4. 根据权利要求3所述的框架单元，其中，所述弹性紧固件为L型，L型的所述弹性紧固件设于所述光学部材的边角上并通过所述定位槽同时夹持邻近边角的两条侧边。
  5. 根据权利要求1所述的框架单元，其中，所述定位槽为U型并与所述光学部材的侧边过盈配合。
  6. 根据权利要求1所述的框架单元，其中，所述底板包括凸起部以及位于所述凸起部和所述侧壁之间的凹槽部，所述第一支撑部设于所述凹槽部内，且所述第一支撑部远离所述凹槽部的面与所述凸起部相平齐。
  7. 根据权利要求1所述的框架单元，其中，所述侧板与所述侧壁贴合设置。
  8. 根据权利要求1所述的框架单元，其中，所述底板和所述侧壁为多个，所述背框由多个所述底板和所述侧壁拼接而成。
  9. 一种背光模组，其中，所述背光模组包括光学部材和框架单元，所述框架单元包括：
    背框，所述背框包括相连接的底板和侧壁，所述底板用于承载所述光学部材；
    弹性紧固件，包括一体成型的第一支撑部、第二支撑部以及连接所述第一支撑部和所述第二支撑部的侧板，所述第一支撑部与所述底板相抵接，所述第二支撑部用于支撑液晶面板，所述第一支撑部和所述第二支撑部之间配合形成定位槽以夹持所述光学部材的侧边，所述第二支撑部位于所述液晶面板和所述光学部材之间，所述侧板与所述侧壁对应设置；
    所述光学部材包括层叠设置的导光板和光学膜片，所述导光板与所述第一支撑部相抵接，所述光学膜片与所述第二支撑部相抵接。
  10. 根据权利要求9所述的背光模组，其中，所述弹性紧固件的材料为硅胶或橡胶。
  11. 根据权利要求9所述的背光模组，其中，所述弹性紧固件为多个，多个所述弹性紧固件间隔设置于所述光学部材的多条侧边上。
  12. 根据权利要求11所述的背光模组，其中，所述弹性紧固件为L型，L型的所述弹性紧固件设于所述光学部材的边角上并通过所述定位槽同时夹持邻近边角的两条侧边。
  13. 根据权利要求9所述的背光模组，其中，所述定位槽为U型并与所述光学部材的侧边过盈配合。
  14. 一种液晶显示装置，其中，包括液晶面板和根据权利要求9所述的背光模组，所述第二支撑部夹设于所述光学膜片与所述液晶面板之间以支撑所述液晶面板。
  15. 根据权利要求14所述的液晶显示装置，其中，所述弹性紧固件的材料为硅胶或橡胶。
  16. 根据权利要求14所述的液晶显示装置，其中，所述定位槽为U型并与所述光学部材的侧边过盈配合。
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