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WO2016026157A1 - 曲率可调的复合背板及背光模块 - Google Patents

曲率可调的复合背板及背光模块 Download PDF

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Publication number
WO2016026157A1
WO2016026157A1 PCT/CN2014/085212 CN2014085212W WO2016026157A1 WO 2016026157 A1 WO2016026157 A1 WO 2016026157A1 CN 2014085212 W CN2014085212 W CN 2014085212W WO 2016026157 A1 WO2016026157 A1 WO 2016026157A1
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WO
WIPO (PCT)
Prior art keywords
plate
telescopic rod
intermediate portion
disposed
telescopic
Prior art date
Application number
PCT/CN2014/085212
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English (en)
French (fr)
Inventor
周革革
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.)
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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 US14/394,476 priority Critical patent/US9377576B2/en
Publication of WO2016026157A1 publication Critical patent/WO2016026157A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Definitions

  • the invention belongs to the technical field of liquid crystal display, and in particular relates to a composite back plate and a backlight module with adjustable curvature.
  • liquid crystal display LCD
  • space utilization efficiency high space utilization efficiency
  • low consumption high space utilization efficiency
  • Many superior features such as power, no radiation and low electromagnetic interference have become the mainstream of the market.
  • the liquid crystal display device generally includes a liquid crystal display panel and a backlight module (Black Light Module, abbreviated as BL). Since the liquid crystal display panel itself does not have self-illuminating characteristics, the backlight module must be disposed under the liquid crystal display panel to provide a surface light source required for the liquid crystal display panel, such that the liquid crystal display panel can be provided by the surface light source provided by the backlight module. Display images.
  • BL Black Light Module
  • curved liquid crystal display devices provide optimal viewing from edge to edge, while ordinary flat liquid crystal display devices display effects at the edge of the screen. It has not been ideal.
  • the curved LCD design of the curved liquid crystal display device is designed to be curved in the direction of the user, providing a wide panoramic image effect, which can bring the same visual enjoyment both in the center of the screen and around the edge, and is reduced in close-up viewing. The distortion of off-axis viewing.
  • the curved liquid crystal display device will allow the user to extend the viewing distance for a better viewing experience.
  • the curved liquid crystal display device has great advantages: 1. brand differentiation; 2. wider viewing angle; 3. reducing distortion of close-range viewing.
  • most of the existing curved liquid crystal display devices are curved liquid crystal display devices having a fixed curvature, which are fixedly set to a predetermined curvature at the time of shipment, and cannot be arbitrarily adjusted by the user.
  • an object of the present invention is to provide a composite backplane having an adjustable curvature, which is used in a liquid crystal display device with adjustable curvature, wherein the composite back panel includes: a fixing plate; a plate, comprising an intermediate portion, wherein the intermediate portion is fixed on the fixing plate; at least two telescopic control devices are disposed between the back plate and the fixing plate, and are respectively disposed at the intermediate portion Both sides; wherein the telescopic control device controls the distance between the back plate and the fixing plate by elongating or shortening to adjust the bending curvature of the back plate.
  • the backboard includes a heat dissipation plate and a support plate, wherein an intermediate portion of the back plate includes an end of the support plate and an end of the heat dissipation plate, and an end of the support plate is fixed at the
  • the fixing plate has an end portion of the heat dissipation plate fixed to an end of the support plate.
  • one of the two telescopic control devices is disposed between the heat dissipation plate and the fixed plate, and the other of the two telescopic control devices is disposed between the support plate and the fixed plate.
  • the two telescopic control devices are symmetrically disposed on both sides of the intermediate portion.
  • the telescopic control device includes a telescopic rod, a top plate connected to a top end of the telescopic rod, and a bottom plate connected to a bottom end of the telescopic rod, wherein the top plate is fixedly coupled with the back plate, The bottom plate is fixedly coupled to the fixing plate.
  • Another object of the present invention is to provide a backlight module with adjustable curvature, comprising: a fixing plate; a back plate comprising an intermediate portion, wherein the intermediate portion is fixed on the fixing plate; and the light guiding plate is disposed at the
  • the backplane has a light incident surface; a plurality of light sources are disposed on the sidewall of the backboard and adjacent to the light incident surface; at least two telescopic control devices are disposed on the backplane and the backplane Between the fixing plates, and respectively disposed at two sides of the intermediate portion; wherein the telescopic control device controls the distance between the back plate and the fixing plate by elongating or shortening to adjust the back The curvature of the plate, which in turn adjusts the curvature of curvature of the backlight module.
  • the backboard includes a heat dissipation plate and a support plate, wherein an intermediate portion of the back plate includes an end of the support plate and an end of the heat dissipation plate, and an end of the support plate is fixed at the
  • the fixing plate has an end portion of the heat dissipation plate fixed to an end of the support plate.
  • a sidewall of the heat dissipation plate is a sidewall of the backboard, and the plurality of light sources are disposed on sidewalls of the heat dissipation plate.
  • one of the two telescopic control devices is disposed between the heat dissipation plate and the fixed plate, and the other of the two telescopic control devices is disposed between the support plate and the fixed plate.
  • the two telescopic control devices are symmetrically disposed on both sides of the intermediate portion.
  • the telescopic control device includes a telescopic rod, a top plate connected to a top end of the telescopic rod, and a bottom plate connected to a bottom end of the telescopic rod, wherein the top plate is fixedly coupled with the back plate, The bottom plate is fixedly coupled to the fixing plate.
  • the curvature-adjustable composite back sheet and the backlight module of the present invention can adjust the distance between the back sheet and the fixed board by adjusting the extension or shortening of the telescopic control device, thereby adjusting the bending curvature of the liquid crystal display device.
  • FIG. 1 is a side elevational view of a liquid crystal display device with adjustable curvature according to a first embodiment of the present invention
  • FIG. 2 is a partial perspective view of a composite backing plate having an adjustable curvature according to a first embodiment of the present invention
  • Figure 3 is a side elevational view of a liquid crystal display device with adjustable curvature according to a second embodiment of the present invention.
  • FIG. 4 is a partial perspective view of a composite backing plate of adjustable curvature in accordance with a second embodiment of the present invention.
  • Figure 1 is a side elevational view of a liquid crystal display device having an adjustable curvature according to a first embodiment of the present invention.
  • 2 is a partial perspective view of a composite backing plate of adjustable curvature in accordance with a first embodiment of the present invention.
  • a liquid crystal display device with adjustable curvature includes a backlight module 100, a liquid crystal display panel 200 disposed opposite the backlight module 100, and a backlight module 100 and a liquid crystal display panel.
  • the outer frame 300 is fixedly coupled to the backlight module 100 by a fixed combination with the backlight module 100.
  • the backlight module 100 provides a display light source to the liquid crystal display panel 200.
  • the liquid crystal display panel 200 is caused to display an image.
  • the curvature of the backlight module 100 is adjustable or variable
  • the curvature of the liquid crystal display panel 200 is changed by the change of the curvature of the self, so that the overall curvature of the liquid crystal display device according to the first embodiment of the present invention is adjustable or variable.
  • the structure of the liquid crystal display panel 200 according to the first embodiment of the present invention is well known to those skilled in the art, and is not described herein for the sake of simplicity.
  • the backlight module 100 includes a fixing plate 110, a back plate 120, a light guide plate 130, a plurality of light sources 140, an optical film 150, a bezel 160, a reflection sheet, and two telescopic control devices 170. .
  • the fixing plate 110 is a flat plate.
  • the back plate 120 is disposed on the fixing plate 110, and the intermediate portion 121 is fixedly disposed on the fixing plate 110.
  • the intermediate portion 121 of the back plate 120 can be locked to the fixing plate by a fixing member such as a screw. 110 on.
  • the light guide plate 130 is disposed on the back plate 120 and has a light incident surface 131.
  • a light bar formed by a plurality of light sources 140 is fixedly disposed on the side wall 122 of the back plate 120, and each light source 140 is adjacent to and facing the light incident surface 131.
  • the light source 140 may be a light emitting diode (LED).
  • the optical film 150 is disposed on the top surface of the light guide plate 130 for improving the performance of the light emitted from the top surface of the light guide plate 130.
  • the number and type of the optical film 150 can be satisfied according to actual requirements, and the present invention does not Specific restrictions.
  • a reflective sheet (not labeled) is generally disposed between the light guide plate 130 and the back plate 120, and reflects the light emitted from the bottom surface of the light guide plate 130 back into the light guide plate 130 to improve the utilization of light.
  • the plastic frame 160 is disposed on the optical film 150 and fixedly coupled to the sidewall 122 and the other sidewall 123 of the back plate 120 to fix the optical film 150, the light guide plate 130 and the reflective sheet in the back plate 120. .
  • the back plate 120 further includes two protrusions 123, wherein the two protrusions 123 are symmetrically disposed on the left and right sides of the intermediate portion 121 to enhance the overall strength of the backlight module 100.
  • Two telescopic control devices 170 It is disposed between the back plate 120 and the fixed plate 110, and is disposed on the left and right sides of the intermediate portion 121, respectively. It should be understood that the number of telescopic control devices 170 is not limited to that shown in FIG.
  • the two telescoping controls 170 can be extended or shortened by a user control (eg, by a user via a remote control). In order to facilitate the user to simultaneously control the two telescopic control devices 170, preferably, in the present embodiment, the two telescopic control devices 170 are symmetrically disposed on the left and right sides of the intermediate portion 121.
  • the distance between the two ends of the backing plate 120 and the fixing plate 110 is controlled to be increased or decreased by controlling the two telescopic control devices 170 to be elongated or shortened. Thereby adjusting the bending curvature of the backing plate 120.
  • the back plate 120 drives the change of the curvature of curvature of other components of the backlight module 100 by the change of its own curvature of curvature, thereby realizing that the bending curvature of the backlight module 100 is adjustable or variable.
  • the telescopic control device 170 includes a telescopic rod 171, a top plate 172 connected to the top end of the telescopic rod 171, and a bottom plate 173 connected to the bottom end of the telescopic rod 171, wherein the top plate 172 and the back plate
  • the bottom surface of the plate 120 is fixedly attached, and the bottom plate 173 is fixedly coupled to the upper surface of the fixing plate 110.
  • the telescopic rod 171 can be extended or shortened by the user to control the distance between the two ends of the back plate 120 and the fixed plate 110 to increase or decrease, thereby adjusting the bending curvature of the back plate 120.
  • Figure 3 is a side elevational view of a liquid crystal display device with adjustable curvature in accordance with a second embodiment of the present invention.
  • 4 is a partial perspective view of a composite backing plate of adjustable curvature in accordance with a second embodiment of the present invention.
  • the backboard includes a heat dissipation plate 180 and a support plate 190.
  • the backing plate according to the second embodiment of the present invention is not integrally formed, but is constituted by the heat radiating plate 180 and the supporting plate 190.
  • the heat dissipation plate 180 is formed of a metal material having good heat dissipation properties, such as aluminum or the like.
  • the support plate 190 is formed of a metal material having a good strength such as iron or the like.
  • the heat dissipation plate 180 includes an end portion 181, a protrusion 182 connected to the end portion 181, and a side wall 183 connected to the protrusion 182.
  • the support plate 190 includes an end portion 191, a protrusion 192 connected to the end portion 191, and a side wall 193 connected to the protrusion 192.
  • the intermediate portion of the back plate of the present embodiment includes an end portion 191 of the support plate 190 and an end portion 181 of the heat dissipation plate 180, wherein the end portion 191 of the support plate 190 is fixed to the fixing plate 110, and the end portion 181 of the heat dissipation plate 180 is fixed.
  • the end portion 191 of the support plate 190 and the end portion 181 of the heat dissipation plate 180 can be supported by a fixing member such as a screw.
  • the secondary lock is attached to the fixed plate 110.
  • the end portion 181 of the heat dissipation plate 180 may be fixed to the fixing plate 110, and the end portion 191 of the gusset 190 is fixed to the end portion 181 of the heat dissipation plate 180.
  • the protrusion 182 of the heat dissipation plate 180 of the present embodiment is symmetrically disposed with the protrusion 192 of the support plate 190 at the left and right sides of the intermediate portion of the back plate formed by the end portion 181 and the end portion 191, and the heat dissipation plate
  • the side wall 183 of the 180 is also symmetrically disposed on the left and right sides of the intermediate portion of the backing plate formed by the end portion 181 and the end portion 191, similarly to the side wall 193 of the support plate 190.
  • the light bars formed by the plurality of light sources 140 are fixedly disposed on the side walls 183 of the heat dissipation plate 180, and each light source 140 is adjacent to each other. It is also directed to the light incident surface 131 of the light guide plate 130.
  • One of the two telescopic control devices 170 is disposed between the heat dissipation plate 180 and the fixed plate 110, and the other two of the two telescopic control devices 170 are disposed between the support plate 190 and the fixed plate 110, and the two telescopic control devices 170 respectively
  • the left and right sides of the intermediate portion of the back plate formed by the end portion 181 and the end portion 191 are provided.
  • the two telescoping controls 170 can be extended or shortened by a user control (eg, by a user via a remote control).
  • the two telescopic control devices 170 are symmetrically disposed on the left and right sides of the intermediate portion of the backboard formed by the end portions 181 and the end portions 191. It should be understood that the number of telescopic control devices 170 is not limited to that shown in FIG.
  • the two telescopic control devices 170 are simultaneously controlled to be elongated or shortened to simultaneously control between the heat dissipation plate 180 and the fixed plate 110.
  • the distance and the distance between the support plate 190 and the fixed plate 110 are increased or decreased to adjust the bending curvature of the heat dissipation plate 180 and the support plate 190.
  • the heat dissipation plate 180 and the support plate 190 respectively change the bending curvature of the other components of the backlight module of the embodiment by the change of the bending curvature of the embodiment, so that the bending curvature of the backlight module of the embodiment is adjustable or variable, and further
  • the object of the liquid crystal display device according to the second embodiment of the present invention having an adjustable or variable overall curvature is achieved.

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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract

一种曲率可调的复合背板、及曲率可调的背光模块，用于曲率可调的液晶显示装置中，其中，所述复合背板包括：固定板（110）；背板（120），包括中间部（121），其中，所述中间部（121）固定在所述固定板（110）上；至少两个伸缩控制装置（170），设置在所述背板（120）与所述固定板（110）之间，且分别设置在所述中间部（121）的两侧；其中，所述伸缩控制装置（170）通过伸长或缩短控制所述背板（120）与所述固定板（110）之间的距离，以调节所述背板（120）的弯曲曲率，从而调节所述液晶显示装置的弯曲曲率。

Description

曲率可调的复合背板及背光模块 技术领域
本发明属于液晶显示技术领域，具体地讲，涉及一种曲率可调的复合背板及背光模块。
背景技术
随着光电与半导体技术的演进，也带动了平板显示器(Flat Panel Display)的蓬勃发展，而在诸多平板显示器中，液晶显示装置(Liquid Crystal Display，简称LCD)因具有高空间利用效率、低消耗功率、无辐射以及低电磁干扰等诸多优越特性，已成为市场的主流。
液晶显示装置通常包括液晶显示面板(Liquid Crystal Panel)与背光模块(Black Light Module，简称BL)。由于液晶显示面板本身并不具备自发光的特性，因此必须将背光模块配置在液晶显示面板下方，以提供液晶显示面板所需的面光源，如此液晶显示面板可借由背光模块提供的面光源而显示影像。
近年来，各大厂商陆续推出了曲面的液晶显示装置，整体而言，曲面的液晶显示装置从边缘到边缘都能提供最佳的观看效果，而普通的平面的液晶显示装置在屏幕边缘显示效果一直不太理想。曲面液晶显示装置整片屏幕朝向用户方向包围的弧形设计，可提供宽阔的全景影像效果，不论是在屏幕中央还是边缘四周，都能够带来同样的视觉享受，并且在近距离观看时还减少了离轴观看的失真度。此外，曲面的液晶显示装置会让用户的观赏距离拉长，达到更好的观赏体验。
因此，相比于普通的平面液晶显示装置，曲面液晶显示装置有着很大的优势：1、品牌的差异化；2、更宽广的可视角度；3、减少近距离观看的失真度。然而，现有的曲面液晶显示装置大部分都为曲率固定的曲面液晶显示装置，其在出厂时被固定设置为预定的曲率，不能被用户任意调节弯曲曲率。
发明内容
为了解决上述现有技术存在的问题，本发明的目的在于提供一种曲率可调的复合背板，用于曲率可调的液晶显示装置中，其中，所述复合背板包括：固定板；背板，包括中间部，其中，所述中间部固定在所述固定板上；至少两个伸缩控制装置，设置在所述背板与所述固定板之间，且分别设置在所述中间部的两侧；其中，所述伸缩控制装置通过伸长或缩短控制所述背板与所述固定板之间的距离，以调节所述背板的弯曲曲率。
进一步地，所述背板包括散热板及支撑板，其中，所述背板的中间部包括所述支撑板的端部和所述散热板的端部，所述支撑板的端部固定在所述固定板上，所述散热板的端部固定在所述支撑板的端部上。
进一步地，所述两个伸缩控制装置之一设置在所述散热板与所述固定板之间，所述两个伸缩控制装置之另一设置在所述支撑板与所述固定板之间。
进一步地，所述两个伸缩控制装置对称设置在所述中间部的两侧。
进一步地，所述伸缩控制装置包括伸缩杆、与所述伸缩杆的顶端连接的顶板及与所述伸缩杆的底端连接的底板，其中，所述顶板与所述背板固定结合，所述底板与所述固定板固定结合。
本发明的另一目的还在于提供一种曲率可调的背光模块，包括：固定板；背板，包括中间部，其中，所述中间部固定在所述固定板上；导光板，设置在所述背板上，且具有一入光面；若干光源，设置在所述背板的侧壁上，且邻近于所述入光面；至少两个伸缩控制装置，设置在所述背板与所述固定板之间，且分别设置在所述中间部的两侧；其中，所述伸缩控制装置通过伸长或缩短控制所述背板与所述固定板之间的距离，以调节所述背板的弯曲曲率，进而调节所述背光模块的弯曲曲率。
进一步地，所述背板包括散热板及支撑板，其中，所述背板的中间部包括所述支撑板的端部和所述散热板的端部，所述支撑板的端部固定在所述固定板上，所述散热板的端部固定在所述支撑板的端部上。
进一步地，所述散热板的侧壁为所述背板的侧壁，其中，所述若干光源设置在散热板的侧壁上。
进一步地，所述两个伸缩控制装置之一设置在所述散热板与所述固定板之间，所述两个伸缩控制装置之另一设置在所述支撑板与所述固定板之间。
进一步地，所述两个伸缩控制装置对称设置在所述中间部的两侧。
进一步地，所述伸缩控制装置包括伸缩杆、与所述伸缩杆的顶端连接的顶板及与所述伸缩杆的底端连接的底板，其中，所述顶板与所述背板固定结合，所述底板与所述固定板固定结合。
本发明的曲率可调的复合背板及背光模块，可通过调节伸缩控制装置伸长或缩短来调节背板与固定板之间的距离，从而调节液晶显示装置的弯曲曲率。
附图说明
通过结合附图进行的以下描述，本发明的实施例的上述和其它方面、特点和优点将变得更加清楚，附图中：
图1是根据本发明的第一实施例的曲率可调的液晶显示装置的侧视示意图；
图2是根据本发明的第一实施例的曲率可调的复合背板的局部立体示意图；
图3是根据本发明的第二实施例的曲率可调的液晶显示装置的侧视示意图；
图4是根据本发明的第二实施例的曲率可调的复合背板的局部立体示意图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。在附图中，相同的标号将始终被用于表示相同的元件。
图1是根据本发明的第一实施例的曲率可调的液晶显示装置的侧视示意图。图2是根据本发明的第一实施例的曲率可调的复合背板的局部立体示意图。
请参照图1和图2，根据本发明的第一实施例的曲率可调的液晶显示装置包括背光模块100、与该背光模块100相对设置的液晶显示面板200及将背光模块100与液晶显示面板200固定结合在一起的外框300，其中，外框300通过与背光模块100固定结合而将液晶显示面板200与背光模块100固定结合在一起，背光模块100提供显示光源给液晶显示面板200，以使液晶显示面板200显示影像。此外，背光模块100的曲率可调或可变，其通过自身曲率变化而带动液晶显示面板200的曲率变化，从而使根据本发明的第一实施例的液晶显示装置的整体曲率可调或可变。应当理解的是，根据本发明的第一实施例的液晶显示面板200的结构是本领域的技术人员所熟知的，为了简单清晰，在此不再赘述。
以下将对根据本发明的第一实施例的背光模块100包括固定板110、背板120、导光板130、若干光源140、光学膜片150、胶框160、反射片及两个伸缩控制装置170。
固定板110为一平板。背板120设置在固定板110之上，且其中间部121固定设置在固定板110之上，在本实施例中，可通过螺钉等固定件将背板120的中间部121锁附在固定板110上。导光板130设置在背板120上，且其具有一入光面131。由若干光源140形成的灯条固定设置在背板120的侧壁122上，并且每个光源140邻近并正对于入光面131，在本实施例中，光源140可为发光二极管(LED)。光学膜片150设置在导光板130的顶面上，用于改善由导光板130的顶面出射的光的性能，其中，光学膜片150的数量及种类可根据实际要求满足，本发明并不作具体限制。反射片(未标识)通常设置在导光板130与背板120之间，其将由导光板130的底面出射的光反射回导光板130中，以提高光的利用率。胶框160设置在光学膜片150之上，并与背板120的侧壁122及另一侧壁123固定结合，从而将光学膜片150、导光板130及反射片固定在背板120之中。
背板120还包括两个凸起123，其中，这两个凸起123对称设置在中间部121的左右两侧，以加强背光模块100的整体强度。两个伸缩控制装置170设 置在背板120与固定板110之间，并分别设置在中间部121的左右两侧。应当理解的是，伸缩控制装置170的数量并不以图1所示为限。这两个伸缩控制装置170可被用户控制(例如用户通过遥控器进行控制)伸长或缩短。为了便于用户同时控制该两个伸缩控制装置170，优选的，在本实施例中，两个伸缩控制装置170对称设置在中间部121的左右两侧。
由于背板120的中间部121被固定在固定板110上，通过控制两个伸缩控制装置170伸长或缩短，以控制背板120的两端与固定板110之间的距离增大或减小，从而调节背板120的弯曲曲率。背板120通过其自身弯曲曲率的改变来带动背光模块100的其他部件的弯曲曲率的变化，进而实现背光模块100的弯曲曲率可调或可变。
此外，根据本发明的第一实施例的伸缩控制装置170包括伸缩杆171、与伸缩杆171的顶端连接的顶板172及与伸缩杆171的底端连接的底板173，其中，该顶板172与背板120的底表面固定贴合，该底板173与固定板110的上表面固定结合。伸缩杆171可被用户控制伸长或缩短，从而控制背板120的两端与固定板110之间的距离增大或减小，进而调节背板120的弯曲曲率。
图3是根据本发明的第二实施例的曲率可调的液晶显示装置的侧视示意图。图4是根据本发明的第二实施例的曲率可调的复合背板的局部立体示意图。
在第二实施例的描述中，与上述的第一实施例的相同之处在此不再赘述，只描述与上述的第一实施例的不同之处。请参照图3和图4，与上述的第一实施例的不同之处在于：背板包括散热板180和支撑板190。换句话说，根据本发明的第二实施例的背板不是一体而成，而是由散热板180和支撑板190构成。在本实施例中，散热板180由散热性良好的金属材料形成，例如铝等。而支撑板190由强度良好的金属材料形成，例如铁等。
具体而言，散热板180包括端部181、与端部181连接的凸起182及与凸起182连接的侧壁183。支撑板190包括端部191、与端部191连接的凸起192及与凸起192连接的侧壁193。本实施例的背板的中间部包括支撑板190的端部191和散热板180的端部181，其中，支撑板190的端部191固定在固定板110上，散热板180的端部181固定在支撑板190的端部191上。在本实施例中，可通过螺钉等固定件将支撑板190的端部191、散热板180的端部181依 次锁附在固定板110上。
应当理解的是，作为另一种实施方式，也可将散热板180的端部181固定在固定板110上，撑板190的端部191固定在散热板180的端部181上。
从整体上看，本实施例的散热板180的凸起182与支撑板190的凸起192对称设置在由端部181和端部191形成的背板的中间部的左右两侧，并且散热板180的侧壁183与支撑板190的侧壁193同样也对称设置在由端部181和端部191形成的背板的中间部的左右两侧。
此外，为了将由若干光源140形成的灯条产生的大量热量散发出去，在本实施例中，将由若干光源140形成的灯条固定设置在散热板180的侧壁183上，并且每个光源140邻近并正对于导光板130的入光面131。
两个伸缩控制装置170之一设置在散热板180与固定板110之间，两个伸缩控制装置170之另一设置在支撑板190与固定板110之间，并且这两个伸缩控制装置170分别设置在由端部181和端部191形成的背板的中间部的左右两边。这两个伸缩控制装置170可被用户控制(例如用户通过遥控器进行控制)伸长或缩短。为了便于用户同时控制该两个伸缩控制装置170，优选的，在本实施例中，两个伸缩控制装置170对称设置在由端部181和端部191形成的背板的中间部的左右两边。应当理解的是，伸缩控制装置170的数量并不以图3所示为限。
由于散热板180的端部181和支撑板190的端部191被固定在固定板110上，通过同时控制两个伸缩控制装置170伸长或缩短，以同时控制散热板180与固定板110之间的距离及支撑板190与固定板110之间的距离增大或减小，从而调节散热板180和支撑板190的弯曲曲率。散热板180和支撑板190分别通过其自身弯曲曲率的改变来带动本实施例的背光模块的其他部件的弯曲曲率的变化，从而实现本实施例的背光模块的弯曲曲率可调或可变，进而实现根据本发明的第二实施例的液晶显示装置的整体曲率可调或可变的目的。
虽然已经参照特定实施例示出并描述了本发明，但是本领域的技术人员将理解：在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下，可在此进行形式和细节上的各种变化。

Claims (18)

  1. 一种曲率可调的复合背板，用于曲率可调的液晶显示装置中，其中，所述复合背板包括：
    固定板；
    背板，包括中间部，其中，所述中间部固定在所述固定板上；
    至少两个伸缩控制装置，设置在所述背板与所述固定板之间，且分别设置在所述中间部的两侧；
    其中，所述伸缩控制装置通过伸长或缩短控制所述背板与所述固定板之间的距离，以调节所述背板的弯曲曲率。
  2. 根据权利要求1所述的复合背板，其中，所述背板包括散热板及支撑板，其中，所述背板的中间部包括所述支撑板的端部和所述散热板的端部，所述支撑板的端部固定在所述固定板上，所述散热板的端部固定在所述支撑板的端部上。
  3. 根据权利要求2所述的复合背板，其中，所述两个伸缩控制装置之一设置在所述散热板与所述固定板之间，所述两个伸缩控制装置之另一设置在所述支撑板与所述固定板之间。
  4. 根据权利要求1所述的复合背板，其中，所述两个伸缩控制装置对称设置在所述中间部的两侧。
  5. 根据权利要求2所述的复合背板，其中，所述两个伸缩控制装置对称设置在所述中间部的两侧。
  6. 根据权利要求3所述的复合背板，其中，所述两个伸缩控制装置对称设置在所述中间部的两侧。
  7. 根据权利要求1所述的复合背板，其中，所述伸缩控制装置包括伸缩杆、与所述伸缩杆的顶端连接的顶板及与所述伸缩杆的底端连接的底板，其中，所述顶板与所述背板固定结合，所述底板与所述固定板固定结合。
  8. 根据权利要求2所述的复合背板，其中，所述伸缩控制装置包括伸缩杆、与所述伸缩杆的顶端连接的顶板及与所述伸缩杆的底端连接的底板，其中，所述顶板与所述背板固定结合，所述底板与所述固定板固定结合。
  9. 根据权利要求3所述的复合背板，其中，所述伸缩控制装置包括伸缩杆、与所述伸缩杆的顶端连接的顶板及与所述伸缩杆的底端连接的底板，其中，所述顶板与所述背板固定结合，所述底板与所述固定板固定结合。
  10. 一种曲率可调的背光模块，其中，包括：
    固定板；
    背板，包括中间部，其中，所述中间部固定在所述固定板上；
    导光板，设置在所述背板上，且具有一入光面；
    若干光源，设置在所述背板的侧壁上，且邻近于所述入光面；
    至少两个伸缩控制装置，设置在所述背板与所述固定板之间，且分别设置在所述中间部的两侧；
    其中，所述伸缩控制装置通过伸长或缩短控制所述背板与所述固定板之间的距离，以调节所述背板的弯曲曲率，进而调节所述背光模块的弯曲曲率。
  11. 根据权利要求10所述的背光模块，其中，所述背板包括散热板及支撑板，其中，所述散热板的侧壁为所述背板的侧壁，所述背板的中间部包括所述支撑板的端部和所述散热板的端部，所述支撑板的端部固定在所述固定板上，所述散热板的端部固定在所述支撑板的端部上。
  12. 根据权利要求10所述的背光模块，其中，所述两个伸缩控制装置之一设置在所述散热板与所述固定板之间，所述两个伸缩控制装置之另一设置在所述支撑板与所述固定板之间。
  13. 根据权利要求10所述的背光模块，其中，所述两个伸缩控制装置对称设置在所述中间部的两侧。
  14. 根据权利要求11所述的背光模块，其中，所述两个伸缩控制装置对 称设置在所述中间部的两侧。
  15. 根据权利要求12所述的背光模块，其中，所述两个伸缩控制装置对称设置在所述中间部的两侧。
  16. 根据权利要求10所述的背光模块，其中，所述伸缩控制装置包括伸缩杆、与所述伸缩杆的顶端连接的顶板及与所述伸缩杆的底端连接的底板，其中，所述顶板与所述背板固定结合，所述底板与所述固定板固定结合。
  17. 根据权利要求11所述的背光模块，其中，所述伸缩控制装置包括伸缩杆、与所述伸缩杆的顶端连接的顶板及与所述伸缩杆的底端连接的底板，其中，所述顶板与所述背板固定结合，所述底板与所述固定板固定结合。
  18. 根据权利要求12所述的背光模块，其中，所述伸缩控制装置包括伸缩杆、与所述伸缩杆的顶端连接的顶板及与所述伸缩杆的底端连接的底板，其中，所述顶板与所述背板固定结合，所述底板与所述固定板固定结合。
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