WO2014063372A1 - 背光模组及液晶显示装置 - Google Patents

背光模组及液晶显示装置 Download PDF

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Publication number
WO2014063372A1
WO2014063372A1 PCT/CN2012/083684 CN2012083684W WO2014063372A1 WO 2014063372 A1 WO2014063372 A1 WO 2014063372A1 CN 2012083684 W CN2012083684 W CN 2012083684W WO 2014063372 A1 WO2014063372 A1 WO 2014063372A1
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WO
WIPO (PCT)
Prior art keywords
disposed
light guide
guide plate
backlight module
optical film
Prior art date
Application number
PCT/CN2012/083684
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English (en)
French (fr)
Inventor
王甲强
俞刚
Original Assignee
深圳市华星光电技术有限公司
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 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/695,435 priority Critical patent/US8928836B2/en
Priority to DE112012006950.1T priority patent/DE112012006950T5/de
Publication of WO2014063372A1 publication Critical patent/WO2014063372A1/zh

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    • 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

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a backlight module and a liquid crystal display device.
  • the backlight module is one of the key components of the liquid crystal display device, and includes an optical film, a light guide plate, a back plate and the like.
  • the optical film needs to be fixed.
  • the optical film is riveted and fixed by a stud or a structure similar to the stud.
  • the rivet structure needs to occupy a large space.
  • the backlight module is gradually developed toward a narrow frame in engineering design, and the rivet structure has been difficult to meet the needs of engineering design.
  • the technical problem to be solved by the present invention is to provide a backlight module and a liquid crystal display device, which can effectively save the space of the back plate, simplify the structure of the back plate, and benefit the narrow frame design.
  • a technical solution adopted by the present invention is to provide a backlight module, which comprises a light guide plate, an optical film, a back plate and a fixing member.
  • the light guide plate includes a light emitting surface and a side surface connected to the light emitting surface;
  • the optical film includes a film main body disposed on the light emitting surface of the light guide plate, and a fold extending from the edge of the film main body and attached to the side surface of the light guide plate a curved portion;
  • the back plate includes a bottom plate and a rising portion extending from an edge of the bottom plate, the light guide plate is disposed on the bottom plate, the rising portion is spaced apart from the bent portion, and the back plate is provided with an insertion groove;
  • the fixing member is fixed on the back
  • the plate includes a pressing portion and a fixing portion disposed on the pressing portion, and the pressing portion is elastically supported between the rising portion and the bending portion to press the bending portion on the side surface of the light guide plate;
  • the pressing portion is
  • the fixing portion is arranged in a T shape.
  • the pressing portion and the fixing portion are integrally formed of an elastic material.
  • the optical film comprises a first optical film and a second optical film which are arranged in a stack, and the bent portion of the first optical film and the bent portion of the second optical film are offset from each other on the side of the light guide plate, and are fixed
  • the member presses the bent portion of the first optical film and the bent portion of the second optical film on the side surface of the light guide plate.
  • the angle at which the bent portion is bent is less than 90 degrees.
  • a backlight module which includes a light guide plate, an optical film, a back plate, and a fixing member.
  • the light guide plate includes a light emitting surface and a side surface connected to the light emitting surface;
  • the optical film includes a film main body disposed on the light emitting surface of the light guide plate, and a fold extending from the edge of the film main body and attached to the side surface of the light guide plate a curved portion;
  • the back plate includes a bottom plate and a rising portion extending from an edge of the bottom plate, the light guide plate is disposed on the bottom plate, and the rising portion is spaced apart from the bent portion;
  • the fixing member is elastically supported by the rising portion and the bent portion The pressing portion is pressed against the side surface of the light guide plate.
  • the fixing member is further fixed to the backboard.
  • the fixing member includes a pressing portion and a fixing portion disposed on the pressing portion.
  • the back plate is provided with an insertion groove, the fixing portion is locked and fixed in the insertion groove, and the pressing portion presses the bending portion on the light guide plate. On the side.
  • the pressing portion is arranged in a plate shape, and comprises two main surfaces respectively disposed opposite to each other, one of the two main surfaces contacting the bending portion, and the fixing portion is disposed on the other of the two main surfaces, the embedding groove is disposed On the erection.
  • the fixing portion is disposed in a T shape, and the pressing portion and the fixing portion are integrally formed of an elastic material.
  • the pressing portion is arranged in a plate shape, and comprises two main surfaces respectively disposed opposite to each other and a connecting surface connecting the two main surfaces and adjacent to the bottom plate, one of the two main surfaces contacting the bending portion, two The other of the main surfaces contacts the rising portion, the fixing portion is disposed on the connecting surface, and the embedding groove is disposed on the bottom plate.
  • the fixing portion is disposed in a T shape, and the pressing portion and the fixing portion are integrally formed of an elastic material.
  • the optical film comprises a first optical film and a second optical film which are arranged in a stack, and the bent portion of the first optical film and the bent portion of the second optical film are offset from each other on the side of the light guide plate, and are fixed
  • the member presses the bent portion of the first optical film and the bent portion of the second optical film on the side surface of the light guide plate.
  • the angle at which the bent portion is bent is less than 90 degrees.
  • a liquid crystal display device which includes a backlight module
  • the backlight module includes a light guide plate, an optical film, a back plate, and a fixing member.
  • the light guide plate includes a light emitting surface and a side surface connected to the light emitting surface;
  • the optical film includes a film main body disposed on the light emitting surface of the light guide plate, and a fold extending from the edge of the film main body and attached to the side surface of the light guide plate a curved portion;
  • the back plate includes a bottom plate and a rising portion extending from an edge of the bottom plate, the light guide plate is disposed on the bottom plate, and the rising portion is spaced apart from the bent portion;
  • the fixing member is elastically supported by the rising portion and the bent portion The pressing portion is pressed against the side surface of the light guide plate.
  • the fixing member is further fixed to the backboard.
  • the fixing member includes a pressing portion and a fixing portion disposed on the pressing portion.
  • the back plate is provided with an insertion groove, the fixing portion is locked and fixed in the insertion groove, and the pressing portion presses the bending portion on the light guide plate. On the side.
  • the pressing portion is arranged in a plate shape, and comprises two main surfaces respectively disposed opposite to each other, one of the two main surfaces contacting the bending portion, and the fixing portion is disposed on the other of the two main surfaces, the embedding groove is disposed On the erection.
  • the fixing portion is disposed in a T shape, and the pressing portion and the fixing portion are integrally formed of an elastic material.
  • the pressing portion is arranged in a plate shape, and comprises two main surfaces respectively disposed opposite to each other and a connecting surface connecting the two main surfaces and adjacent to the bottom plate, one of the two main surfaces contacting the bending portion, two The other of the main surfaces contacts the rising portion, the fixing portion is disposed on the connecting surface, and the embedding groove is disposed on the bottom plate.
  • the backlight module and the liquid crystal display device of the embodiment of the present invention are provided with a bent portion at the edge of the diaphragm main body of the optical film, and the bent portion is attached to the side surface of the light guide plate, and the rising portion and the folded portion of the back plate are folded.
  • the bent portions are spaced apart, and the bent portion is pressed on the side surface of the light guide plate by the fixing member, which can save the stud structure, simplify the assembly process, save man-hours, benefit the narrow frame design, and save cost.
  • FIG. 1 is a partial structural schematic view of an embodiment of a backlight module of the present invention
  • FIG. 2 is a partial structural schematic view of a back plate of the backlight module shown in FIG. 1;
  • FIG. 3 is a schematic structural view of a fixing member of the backlight module shown in FIG. 1;
  • FIG. 4 is a partial structural schematic view showing another embodiment of the back panel of the backlight module shown in FIG. 1;
  • FIG. 5 is a schematic structural view of another embodiment of the fixing member of the backlight module shown in FIG. 1; FIG.
  • FIG. 6 is a partial structural schematic view of another embodiment of a backlight module of the present invention.
  • FIG. 1 is a partial structural diagram of an embodiment of a backlight module of the present invention.
  • the backlight module includes a light guide plate 11, an optical film 12, a back plate 13, and a fixing member 14.
  • the light guide plate 11 includes a light exit surface 111 and a side surface 112 connected to the light exit surface 111.
  • the optical film 12 includes a diaphragm main body 121 and a bent portion 122.
  • the diaphragm main body 121 is disposed on the light-emitting surface 111 of the light guide plate 11 , and the bent portion 122 is bent and extended from the edge of the diaphragm main body 121 and attached to the side surface 112 of the light guide plate 11 .
  • the back plate 13 includes a bottom plate 131 and a rising portion 132 that is bent and extended from an edge of the bottom plate 131.
  • the light guide plate 11 is disposed on the bottom plate 131, and the rising portion 132 is spaced apart from the bent portion 122 of the optical film 12.
  • the fixing member 14 is elastically supported between the rising portion 132 and the bent portion 122 of the optical film 12 to press the bent portion 122 on the side surface 112 of the light guide plate 11 to simultaneously fix the optical film 12 and the light guide plate.
  • the angle at which the bent portion 122 is bent is less than 90 degrees, so that when the fixing member 15 presses the bent portion 122, the bent portion 122 can provide a reverse acting force to further improve the fixing strength.
  • the backlight module of the embodiment of the present invention eliminates the stud structure, can simplify the structure of the back plate 13, and effectively save the space of the back plate 13.
  • the fixing member 14 has elasticity, and the optical film 12 can be firmly fixed.
  • the fixing member 14 is directly assembled between the bent portion 122 and the rising portion 132, and the assembly is relatively simple, the process can be simplified, the man-hour is saved, and the cost is saved, and The thickness of the fixture 14 can be made smaller to benefit the narrow bezel design.
  • FIG. 2 is a partial structural diagram of the backplane of the backlight module shown in FIG. 1.
  • FIG. 3 is a schematic structural view of the fixing component of the backlight module shown in FIG.
  • the fixing member 14 includes a pressing portion 141 and a fixing portion 142 disposed on the pressing portion 141.
  • the back plate 13 is further provided with an insertion groove 133.
  • the fixing portion 142 is locked and fixed in the insertion groove 133, and the pressing portion 141 is folded.
  • the bent portion 122 is pressed against the side surface 112 of the light guide plate 11.
  • the insertion groove 133 is disposed on the rising portion 132
  • the pressing portion 141 is disposed in a plate shape, and includes a main surface 143 and a main surface 144 which are respectively disposed opposite to each other.
  • the main surface 144 contacts the bent portion 122 and is fixed.
  • the portion 142 is disposed on the main surface 143.
  • the fixing portion 142 is disposed in a T shape, and the pressing portion 141 and the fixing portion 142 are integrally formed of an elastic material. Since the fixing portion 142 has elasticity, when the fixing portion 142 is stuck in the insertion groove 133, it can be elastically fixed to the insertion groove 133 by itself.
  • FIG. 4 is a partial structural diagram of another embodiment of the backlight module of the backlight module shown in FIG. 1.
  • FIG. 5 is another fixing component of the backlight module shown in FIG. Schematic diagram of an embodiment.
  • the backing plate 23 and the fixing member 24 of the present embodiment can be used in place of the backing plate 13 and the fixing member 14 of the foregoing embodiment.
  • the fixing member 24 includes a pressing portion 241 and a fixing portion 242 disposed on the pressing portion 241.
  • the back plate 23 is further provided with an insertion groove 233.
  • the fixing portion 242 is locked and fixed in the insertion groove 233, and the pressing portion 241 is folded.
  • the bent portion 122 is pressed against the side surface 112 of the light guide plate 11.
  • the insertion groove 233 is disposed on the bottom plate 231 of the back plate 23
  • the pressing portion 241 is disposed in a plate shape, and includes a main surface 243 and a main surface 244 and a connecting main surface 243 and a main surface 244 which are respectively disposed opposite to each other.
  • a connecting surface 245 disposed adjacent to the bottom plate 231, the main surface 243 contacts the rising portion 232 of the back plate 23, the main surface 244 contacts the bent portion 122, and the fixing portion 242 is disposed on the connecting surface 245.
  • the fixing portion 242 is provided in a T shape, and the pressing portion 241 and the fixing portion 242 are integrally formed of an elastic material.
  • the fixing portion 242 is also elastically fixed to the insertion groove 233 by itself.
  • FIG. 6 is a partial structural diagram of another embodiment of a backlight module of the present invention.
  • the backlight module of the present embodiment further includes an optical film 16 in addition to the foregoing embodiment.
  • the optical film 16 and the optical film 12 are stacked.
  • the optical film 16 includes a diaphragm main body 161 and a bent portion 162.
  • the diaphragm main body 161 is disposed on the diaphragm main body 121 of the optical film 12, and the bent portion 162 is bent and extended from the edge of the diaphragm main body 161 and attached to On the side 112 of the light guide plate 11.
  • the bent portion 122 of the optical film 12 and the bent portion 162 of the optical film 16 are offset from each other on the side surface 112 of the light guide plate 11.
  • the fixing member 14 presses the bent portion 122 of the optical film 12 and the bent portion 162 of the optical film 16 on the side surface 112 of the light guide plate 11.
  • the optical film 12 and the optical film 16 can be fixed by only one fixing member 14, which further saves cost.
  • the present invention does not limit the number of optical films, and the number of optical films may be set according to actual needs. Accordingly, the fixing member 14 may also fix a larger number of optical films.
  • the present invention also provides a liquid crystal display device including the backlight module of the above embodiment.
  • a liquid crystal display device including the backlight module of the above embodiment.
  • other structures of the liquid crystal display device please refer to the prior art, which will not be described here.
  • the backlight module and the liquid crystal display device of the embodiment of the present invention are provided with a bent portion at the edge of the diaphragm main body of the optical film, and the bent portion is attached to the side surface of the light guide plate, and the rising portion and the bent portion of the back plate are bent.
  • the interval is set, and the bent portion is pressed on the side surface of the light guide plate by the fixing member, the stud structure can be omitted, the space of the back plate is effectively saved, the back plate structure is simplified, the assembly process is simplified, the working hours are saved, and the work is beneficial.
  • the frame design saves costs.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

一种背光模组及包括其的液晶显示装置。该背光模组包括导光板（11）、光学膜片（12）、背板（13）以及固定件（14）。导光板（11）包括出光面（111）以及与出光面（111）连接的侧面（112）。光学膜片（12）包括设置于出光面（111）上的膜片主体（121）以及从膜片主体（121）的边缘弯折延伸且贴附于侧面（112）上的折弯部（122）。背板（13）包括底板（131）和从底板（131）的边缘弯折延伸的竖起部（132），导光板（11）设置于底板（131）上，竖起部（132）与折弯部（122）间隔设置。固定件（14）弹性支撑于竖起部（132）与折弯部（122）之间，以将折弯部（122）压持于导光板（11）的侧面（112）上。该背光模组和液晶显示装置能够有效节省背板的空间，有益于窄边框设计。

Description

背光模组及液晶显示装置
【技术领域】
本发明涉及液晶显示技术领域，特别是涉及一种背光模组及液晶显示装置。
【背景技术】
背光模组是液晶显示装置的关键零组件之一，其包括光学膜片、导光板以及背板等。在背光模组的制程中，需要对光学膜片进行固定。现有技术中，光学膜片通过背板上设置的铆柱或类似于铆柱的结构实现铆接固定。然而，铆柱结构需要占用较大的空间，在如今，背光模组在工程设计上逐渐朝向窄边框发展，铆柱结构已难以满足工程设计的需要。
【发明内容】
本发明主要解决的技术问题是提供一种背光模组及液晶显示装置，能够有效节省背板的空间，简化背板结构，有益于窄边框设计。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种背光模组，该背光模组包括导光板、光学膜片、背板以及固定件。导光板包括出光面以及与出光面连接的侧面；光学膜片包括设置于导光板的出光面上的膜片主体以及从膜片主体的边缘弯折延伸且贴附于导光板的侧面上的折弯部；背板包括底板和从底板的边缘弯折延伸的竖起部，导光板设置于底板上，竖起部与折弯部间隔设置，背板上设置有嵌入槽；固定件固定于背板上，包括压持部和设置于压持部上的固定部，压持部弹性支撑于竖起部与折弯部之间，以将折弯部压持于导光板的侧面上；其中，压持部呈板状设置，且包括分别相对设置的两个主表面以及连接两个主表面且与底板相邻设置的连接面，两个主表面中的一个接触折弯部，两个主表面中的另一个接触竖起部，嵌入槽设置于竖起部上或底板上，固定部设置于两个主表面中的另一个上或者设置于连接面上。
其中，固定部呈T字形设置。
其中，压持部和固定部由弹性材料一体制成。
其中，光学膜片包括堆叠设置的第一光学膜片和第二光学膜片，第一光学膜片的折弯部和第二光学膜片的折弯部在导光板的侧面上相互错开，固定件将第一光学膜片的折弯部和第二光学膜片的折弯部压持于导光板的侧面上。
其中，折弯部弯折的角度小于90度。
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，该背光模组包括导光板、光学膜片、背板以及固定件。导光板包括出光面以及与出光面连接的侧面；光学膜片包括设置于导光板的出光面上的膜片主体以及从膜片主体的边缘弯折延伸且贴附于导光板的侧面上的折弯部；背板包括底板和从底板的边缘弯折延伸的竖起部，导光板设置于底板上，竖起部与折弯部间隔设置；固定件弹性支撑于竖起部与折弯部之间，以将折弯部压持于导光板的侧面上。
其中，固定件进一步固定于背板上。
其中，固定件包括压持部和设置于压持部上的固定部，背板上设置有嵌入槽，固定部卡置固定于嵌入槽内，压持部将折弯部压持于导光板的侧面上。
其中，压持部呈板状设置，且包括分别相对设置的两个主表面，两个主表面中的一个接触折弯部，固定部设置于两个主表面中的另一个上，嵌入槽设置于竖起部上。
其中，固定部呈T字形设置，压持部和固定部由弹性材料一体制成。
其中，压持部呈板状设置，且包括分别相对设置的两个主表面以及连接两个主表面且与底板相邻设置的连接面，两个主表面中的一个接触折弯部，两个主表面中的另一个接触竖起部，固定部设置于连接面上，嵌入槽设置于底板上。
其中，固定部呈T字形设置，压持部和固定部由弹性材料一体制成。
其中，光学膜片包括堆叠设置的第一光学膜片和第二光学膜片，第一光学膜片的折弯部和第二光学膜片的折弯部在导光板的侧面上相互错开，固定件将第一光学膜片的折弯部和第二光学膜片的折弯部压持于导光板的侧面上。
其中，折弯部弯折的角度小于90度。
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，该液晶显示装置包括背光模组，背光模组包括导光板、光学膜片、背板以及固定件。导光板包括出光面以及与出光面连接的侧面；光学膜片包括设置于导光板的出光面上的膜片主体以及从膜片主体的边缘弯折延伸且贴附于导光板的侧面上的折弯部；背板包括底板和从底板的边缘弯折延伸的竖起部，导光板设置于底板上，竖起部与折弯部间隔设置；固定件弹性支撑于竖起部与折弯部之间，以将折弯部压持于导光板的侧面上。
其中，固定件进一步固定于背板上。
其中，固定件包括压持部和设置于压持部上的固定部，背板上设置有嵌入槽，固定部卡置固定于嵌入槽内，压持部将折弯部压持于导光板的侧面上。
其中，压持部呈板状设置，且包括分别相对设置的两个主表面，两个主表面中的一个接触折弯部，固定部设置于两个主表面中的另一个上，嵌入槽设置于竖起部上。
其中，固定部呈T字形设置，且压持部和固定部由弹性材料一体制成。
其中，压持部呈板状设置，且包括分别相对设置的两个主表面以及连接两个主表面且与底板相邻设置的连接面，两个主表面中的一个接触折弯部，两个主表面中的另一个接触竖起部，固定部设置于连接面上，嵌入槽设置于底板上。
综上所述，本发明实施方式的背光模组及液晶显示装置在光学膜片的膜片主体边缘设置折弯部，折弯部贴附于导光板的侧面，背板的竖起部与折弯部间隔设置，通过固定件来将折弯部压持于导光板的侧面上，能够省去铆柱结构，简化装配工序，节约工时，有益于窄边框设计，节约成本。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其他目的、特征和优点能够更明显易懂，以下特举较佳实施方式，并配合附图，详细说明如下。
【附图说明】
图1是本发明背光模组一实施方式的部分结构示意图；
图2是图1所示的背光模组的背板的部分结构示意图；
图3是图1所示的背光模组的固定件的结构示意图；
图4是图1所示的背光模组的背板另一种实施方式的部分结构示意图；
图5是图1所示的背光模组的固定件另一种实施方式的结构示意图；
图6是本发明背光模组另一实施方式的部分结构示意图。
【具体实施方式】
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本发明一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，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方式，均属于本发明保护的范围。
请参阅图1，图1是本发明背光模组一实施方式的部分结构示意图。背光模组包括导光板11、光学膜片12、背板13以及固定件14。
导光板11包括出光面111以及与出光面111连接的侧面112。
光学膜片12包括膜片主体121以及折弯部122。膜片主体121设置于导光板11的出光面111上，折弯部122从膜片主体121的边缘弯折延伸并且贴附于导光板11的侧面112上。
背板13包括底板131和从底板131的边缘弯折延伸的竖起部132，导光板11设置于底板131上，竖起部132与光学膜片12的折弯部122间隔设置。
固定件14弹性支撑于竖起部132与光学膜片12的折弯部122之间，以将折弯部122压持于导光板11的侧面112上，达到同时固定光学膜片12和导光板11的目的。
在本实施方式中，折弯部122弯折的角度小于90度，使得固定件15压持折弯部122时，折弯部122能够提供反向作用力，进一步提高固定强度。
本发明实施方式的背光模组相较于现有技术，省去了铆柱结构，能够简化背板13的结构，有效节省背板13的空间。固定件14具有弹性，可以牢靠地固定住光学膜片12，固定件14直接装配于折弯部122和竖起部132之间，装配相对简单，能够简化工序，节约工时，从而节约成本，并且固定件14的厚度可以做得较小，有益于窄边框设计。
进一步地，固定件14固定于背板13上，以防止背光模组在使用过程中固定件14产生松动。具体地，请一并参阅图2和图3，图2是图1所示的背光模组的背板的部分结构示意图，图3是图1所示的背光模组的固定件的结构示意图。固定件14包括压持部141和设置于压持部141上的固定部142，背板13上还设置有嵌入槽133，固定部142卡置固定于嵌入槽133内，压持部141将折弯部122压持于导光板11的侧面112上。在本实施方式中，嵌入槽133设置于竖起部132上，压持部141呈板状设置，且包括分别相对设置的主表面143和主表面144，主表面144接触折弯部122，固定部142设置于主表面143上。
固定部142呈T字形设置，并且压持部141和固定部142由弹性材料一体制成。由于固定部142具有弹性，因此，固定部142卡置于嵌入槽133时，可以依靠自身弹性固定于嵌入槽133。
请一并参阅图4和图5，图4是图1所示的背光模组的背板另一种实施方式的部分结构示意图，图5是图1所示的背光模组的固定件另一种实施方式的结构示意图。本实施方式的背板23和固定件24可用于替代前述实施方式的背板13和固定件14。
固定件24包括压持部241和设置于压持部241上的固定部242，背板23上还设置有嵌入槽233，固定部242卡置固定于嵌入槽233内，压持部241将折弯部122压持于导光板11的侧面112上。在本实施方式中，嵌入槽233设置于背板23的底板231上，压持部241呈板状设置，且包括分别相对设置的主表面243和主表面244以及连接主表面243和主表面244且与底板231相邻设置的连接面245，主表面243接触背板23的竖起部232，主表面244接触折弯部122，固定部242设置于连接面245上。
固定部242呈T字形设置，并且压持部241和固定部242由弹性材料一体制成。固定部242也依靠自身弹性固定于嵌入槽233。
请参阅图6，图6是本发明背光模组另一实施方式的部分结构示意图。
本实施方式的背光模组在前述实施方式的基础上，还包括光学膜片16。光学膜片16和光学膜片12堆叠设置。光学膜片16包括膜片主体161以及折弯部162，膜片主体161设置于光学膜片12的膜片主体121上，折弯部162从膜片主体161的边缘弯折延伸并且贴附于导光板11的侧面112上。需要注意的是，光学膜片12的折弯部122和光学膜片16的折弯部162在导光板11的侧面112上相互错开。固定件14将光学膜片12的折弯部122和光学膜片16的折弯部162压持于导光板11的侧面112上。
本实施方式中，仅需一个固定件14即可固定住光学膜片12和光学膜片16，进一步地节约了成本。
应当理解，本发明并不限定光学膜片的数量，光学膜片的数量可以根据实际需要设置，相应地，固定件14还可固定更多数量的光学膜片。
本发明还提供一种液晶显示装置，该液晶显示装置包括上述实施方式的背光模组。液晶显示装置的其它结构请参照现有技术，此处不再说明。
通过上述方式，本发明实施方式的背光模组及液晶显示装置在光学膜片的膜片主体边缘设置折弯部，折弯部贴附于导光板的侧面，背板的竖起部与折弯部间隔设置，通过固定件来将折弯部压持于导光板的侧面上，能够省去铆柱结构，有效节省背板的空间，简化背板结构，简化装配工序，节约工时，有益于窄边框设计，节约成本。
以上所述仅为本发明的实施方式，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 (20)

  1. 一种背光模组，其中，所述背光模组包括：
    导光板，所述导光板包括出光面以及与所述出光面连接的侧面；
    光学膜片，所述光学膜片包括设置于所述导光板的所述出光面上的膜片主体以及从所述膜片主体的边缘弯折延伸且贴附于所述导光板的所述侧面上的折弯部：
    背板，所述背板包括底板和从所述底板的边缘弯折延伸的竖起部，所述导光板设置于所述底板上，所述竖起部与所述折弯部间隔设置，所述背板上设置有嵌入槽：
    固定件，所述固定件固定于所述背板上，包括压持部和设置于所述压持部上的固定部，所述压持部弹性支撑于所述竖起部与所述折弯部之间，以将所述折弯部压持于所述导光板的所述侧面上；
    其中，所述压持部呈板状设置，且包括分别相对设置的两个主表面以及连接所述两个主表面且与所述底板相邻设置的连接面，所述两个主表面中的一个接触所述折弯部，所述两个主表面中的另一个接触所述竖起部，所述嵌入槽设置于所述竖起部上或所述底板上，所述固定部设置于所述两个主表面中的所述另一个上或者设置于所述连接面上。
  2. 根据权利要求1所述的背光模组，其中，所述固定部呈T字形设置。
  3. 根据权利要求2所述的背光模组，其中，所述压持部和所述固定部由弹性材料一体制成。
  4. 根据权利要求1所述的背光模组，其中，所述光学膜片包括堆叠设置的第一光学膜片和第二光学膜片，所述第一光学膜片的折弯部和所述第二光学膜片的折弯部在所述导光板的侧面上相互错开，所述固定件将所述第一光学膜片的折弯部和所述第二光学膜片的折弯部压持于所述导光板的所述侧面上。
  5. 根据权利要求1所述的背光模组，其中，所述折弯部弯折的角度小于90度。
  6. 一种背光模组，其中，所述背光模组包括：
    导光板，所述导光板包括出光面以及与所述出光面连接的侧面；
    光学膜片，所述光学膜片包括设置于所述导光板的所述出光面上的膜片主体以及从所述膜片主体的边缘弯折延伸且贴附于所述导光板的所述侧面上的折弯部；
    背板，所述背板包括底板和从所述底板的边缘弯折延伸的竖起部，所述导光板设置于所述底板上，所述竖起部与所述折弯部间隔设置；
    固定件，所述固定件弹性支撑于所述竖起部与所述折弯部之间，以将所述折弯部压持于所述导光板的所述侧面上。
  7. 根据权利要求6所述的背光模组，其中，所述固定件进一步固定于所述背板上。
  8. 根据权利要求7所述的背光模组，其中，所述固定件包括压持部和设置于所述压持部上的固定部，所述背板上设置有嵌入槽，所述固定部卡置固定于所述嵌入槽内，所述压持部将所述折弯部压持于所述导光板的所述侧面上。
  9. 根据权利要求8所述的背光模组，其中，所述压持部呈板状设置，且包括分别相对设置的两个主表面，所述两个主表面中的一个接触所述折弯部，所述固定部设置于所述两个主表面中的另一个上，所述嵌入槽设置于所述竖起部上。
  10. 根据权利要求9所述的背光模组，其中，所述固定部呈T字形设置，所述压持部和所述固定部由弹性材料一体制成。
  11. 根据权利要求8所述的背光模组，其中，所述压持部呈板状设置，且包括分别相对设置的两个主表面以及连接所述两个主表面且与所述底板相邻设置的连接面，所述两个主表面中的一个接触所述折弯部，所述两个主表面中的另一个接触所述竖起部，所述固定部设置于所述连接面上，所述嵌入槽设置于所述底板上。
  12. 根据权利要求11所述的背光模组，其中，所述固定部呈T字形设置，所述压持部和所述固定部由弹性材料一体制成。
  13. 根据权利要求6所述的背光模组，其中，所述光学膜片包括堆叠设置的第一光学膜片和第二光学膜片，所述第一光学膜片的折弯部和所述第二光学膜片的折弯部在所述导光板的侧面上相互错开，所述固定件将所述第一光学膜片的折弯部和所述第二光学膜片的折弯部压持于所述导光板的所述侧面上。
  14. 根据权利要求6所述的背光模组，其中，所述折弯部弯折的角度小于90度。
  15. 一种液晶显示装置，其中，所述液晶显示装置背光模组，所述背光模组包括：
    导光板，所述导光板包括出光面以及与所述出光面连接的侧面；
    光学膜片，所述光学膜片包括设置于所述导光板的所述出光面上的膜片主体以及从所述膜片主体的边缘弯折延伸且贴附于所述导光板的所述侧面上的折弯部；
    背板，所述背板包括底板和从所述底板的边缘弯折延伸的竖起部，所述导光板设置于所述底板上，所述竖起部与所述折弯部间隔设置；
    固定件，所述固定件弹性支撑于所述竖起部与所述折弯部之间，以将所述折弯部压持于所述导光板的所述侧面上。
  16. 根据权利要求15所述的液晶显示装置，其中，所述固定件进一步固定于所述背板上。
  17. 根据权利要求16所述的液晶显示装置，其中，所述固定件包括压持部和设置于所述压持部上的固定部，所述背板上设置有嵌入槽，所述固定部卡置固定于所述嵌入槽内，所述压持部将所述折弯部压持于所述导光板的所述侧面上。
  18. 根据权利要求17所述的液晶显示装置，其中，所述压持部呈板状设置，且包括分别相对设置的两个主表面，所述两个主表面中的一个接触所述折弯部，所述固定部设置于所述两个主表面中的另一个上，所述嵌入槽设置于所述竖起部上。
  19. 根据权利要求18所述的液晶显示装置，其中，所述固定部呈T字形设置，且所述压持部和所述固定部由弹性材料一体制成。
  20. 根据权利要求17所述的液晶显示装置，其中，所述压持部呈板状设置，且包括分别相对设置的两个主表面以及连接所述两个主表面且与所述底板相邻设置的连接面，所述两个主表面中的一个接触所述折弯部，所述两个主表面中的另一个接触所述竖起部，所述固定部设置于所述连接面上，所述嵌入槽设置于所述底板上。
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