WO2014172998A1 - 液晶背光模组及其固定组件 - Google Patents

液晶背光模组及其固定组件 Download PDF

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Publication number
WO2014172998A1
WO2014172998A1 PCT/CN2013/078170 CN2013078170W WO2014172998A1 WO 2014172998 A1 WO2014172998 A1 WO 2014172998A1 CN 2013078170 W CN2013078170 W CN 2013078170W WO 2014172998 A1 WO2014172998 A1 WO 2014172998A1
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WIPO (PCT)
Prior art keywords
side wall
liquid crystal
backlight module
bent portion
back plate
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
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PCT/CN2013/078170
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English (en)
French (fr)
Inventor
周革革
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US13/979,648 priority Critical patent/US9435941B2/en
Publication of WO2014172998A1 publication Critical patent/WO2014172998A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • G02F1/133314—Back frames
    • 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
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular to structural improvement of a liquid crystal backlight module. Background technique
  • the current LCD backlight module includes: a front frame 140 , a light bar 130 , an optical component layer 160 , a panel 150 , and a back plate 110 and a plastic frame 120 .
  • the back plate 110 is provided with a hook 112 .
  • the plastic frame 120 is fastened to the back plate 110.
  • the light bar 130 is disposed on the side of the back plate 110 facing away from the hook 112, and the optical element layer 160 is sequentially disposed on the bottom plate of the back plate 110.
  • the front frame 140 is laterally opposed to the outside of the plastic frame 120, and the other side is pressed above the panel 150 to restrict the panel 150 from slipping out.
  • the driving circuit (not shown) of the light bar 130 is mounted on the driving circuit board 131, the driving circuit board 131 is then connected to the back board 110.
  • This design makes the distance L1 from the surface of the light bar 130 to the outside of the front frame 140 large, which does not satisfy the requirement of narrowing the frame.
  • some people remove the back plate, which causes the mechanical strength of the entire module to be greatly weakened, and other problems are easily introduced; also, the plastic frame portion is narrowed, but the degree of narrowing is small.
  • the driving circuit of the light bar 130 is directly printed on the side wall 112 of the back panel 110. Since the thickness of the driving circuit is very thin, which is much smaller than the thickness of the driving circuit board, the design makes the distance L2 of the surface of the light bar 130 to the outer side of the front frame 140 smaller than the L1 of the conventional structure, that is, the thickness of the driving circuit board of the light bar 130 is saved. Narrow border design. However, the plastic frame and the back plate of the design are difficult to fix. This is because in the conventional liquid crystal backlight module, a hook can be made on the side wall of the back panel, and a corresponding card hole is formed in the plastic frame to fix the plastic frame. However, in the structure of the liquid crystal backlight module shown in FIG.
  • the side wall 112 is covered with a circuit for driving the LED lamp to operate.
  • a buckle or a screw hole is formed in the side wall 112 to fix the plastic frame 120.
  • the liquid crystal backlight module assembled by the plastic frame 120 and the back plate 110 abutting each other is unstable in connection and easily affects the working performance of the liquid crystal.
  • the present invention provides a fixing component of a liquid crystal backlight module, and a liquid crystal backlight module formed by using the fixing component.
  • the liquid crystal backlight module fixing component includes
  • a backing plate having a bottom plate, a side wall and a bent portion, the side wall having a first end and a second end, wherein the bottom plate is connected to the first end; the bent portion is connected to the second end and Provided on an outer side of the side wall, forming an angle with the side wall;
  • the bent portion, the side wall and the bottom plate are integrally formed.
  • the side wall is embedded with an integrally formed driving circuit for providing a working circuit for the light bar embedded inside the side wall.
  • the invention also provides a liquid crystal backlight module, comprising a front frame, a panel, a light bar, an optical component layer, and a fixing component, the fixing component comprising:
  • a backing plate having a bottom plate, a side wall and a bent portion, the side wall having a first end and a second end, the bottom plate being connected to the first end, wherein the bent portion is connected to the second end And disposed outside the side wall, forming an angle with the side wall;
  • a plastic frame having a card hole, the bent portion is correspondingly embedded in the card hole, and the plastic frame is fastened to the first side wall;
  • the light element layer is mounted on the bottom plate; the light bar is disposed on the inner side of the side wall corresponding to the optical element layer; the panel is loaded above the plastic frame, and the front frame side is abutted On the outer side of the plastic frame, the other side abuts against the outer side of the panel for forming a limit on the panel.
  • the bent portion, the side wall and the bottom plate are integrally formed.
  • the light bar comprises an LED light source and a driving circuit
  • the driving circuit is disposed on the side wall for driving the LED light source to work.
  • the fixing component of the liquid crystal backlight module provided by the invention has a bending part formed on the back plate corresponding to the card hole on the plastic frame, thereby eliminating the process of opening the hook on the back plate.
  • the optimized backplane and the plastic frame connection method are not only suitable for the liquid crystal backlight module structure independently fabricated by the light bar and the back plate, but also suitable for the structure of the back plate formed with the light bar driving circuit to form the liquid crystal backlight module, and The production process is simple, the assembly is convenient, and the structure is stable and reliable.
  • FIG. 1 is a schematic structural view of a prior art liquid crystal backlight module.
  • FIG. 2 is a schematic structural view of another liquid crystal backlight module of the prior art.
  • FIG. 3A is a schematic structural view of a liquid crystal backlight module before assembly according to Embodiment 1 of the present invention.
  • FIG. 3B is a schematic structural view of a liquid crystal backlight module assembled according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic structural view of a backplane according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic structural view of a liquid crystal backlight module assembled according to Embodiment 2 of the present invention. detailed description
  • the liquid crystal backlight module of the present embodiment includes a light bar 230, an optical element layer 260, and a front frame 240, and further includes a fixing component, and the fixing component includes a back plate 210 and a plastic frame 220.
  • the back plate 210 has a bottom plate 211, a side wall 212, and a bent portion 213.
  • the side wall 212 has a first end 212A and a second end 212B.
  • the bottom plate 211 is connected to the first end 212A.
  • the bent portion 213 is connected to the second end 212B and is disposed on the side wall. 212 outside.
  • the bent portion 213, the side wall 212 and the bottom plate 211 are integrally formed.
  • the plastic frame 220 has a hole 221, and the bent portion 213 is correspondingly embedded in the hole 221 for engaging the frame 220 with the back plate 210.
  • the bent portion 213 is bent toward the side wall 212, so that the bent portion 213 forms a "bump" on the outer side of the side wall 212, and the hole 221 of the plastic frame 220 is engaged with the bent portion 213.
  • the bent portion 213 can be closely attached to the outer wall of the side wall 212 as shown in Fig. 3A or Fig. 3B.
  • the structure can also be fastened to the bent portion 213 by using the hole 221 to stably connect the frame 220 to the back plate 210.
  • the light bar 230 includes an LED light source 231 and a driving circuit board 232.
  • the driving circuit board 232 is provided with a driving circuit for driving the LED light source 231 to operate.
  • the assembled structure is shown in Fig. 3B.
  • the optical element layer 260 is loaded on the bottom plate 211 during assembly.
  • the light bar 230 is disposed inside the side wall 212, and the LED light source 231 is connected to the optical element layer 260, and is connected to the side wall 212 by the driving circuit board 232.
  • the panel 250 is loaded above the plastic frame 220.
  • the front frame 240 is laterally abutted against the outer side of the plastic frame 220, and the other side abuts against the outer side of the panel 250, and the limiting panel 250 does not slide out.
  • the material of the back plate is metal or plastic.
  • Embodiment 2 The difference between the embodiment and the embodiment 1 is that the driving circuit of the light bar is directly disposed on the back plate, and the frame is narrowed to solve the problem that the prior art driving circuit is not used for the plastic frame after being placed in the back plate. Fixed issue. As shown in FIG. 5, the drive circuit of the light bar 230 is directly wound on the side wall 212 of the back plate 210. Since the driving circuit can be made very thin, only the exposed connecting end is connected to the light bar 230, and the inner side of the side wall 212 only exposes the LED light source 231 corresponding to the optical element layer 260, so that the surface of the light bar 230 is applied to the side wall 212. The distance reduces the thickness of the driving circuit board in Embodiment 1.
  • the plastic frame 220 can be fixed by the bent portion 213 connected to the second end 212B of the side wall 212.
  • the fixing structure of the bent portion 213 and the plastic frame 220 can be referred to the embodiment 1.
  • the narrow connection of the frame can ensure the stable connection between the plastic frame and the back plate.

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

Abstract

一种液晶背光模组固定组件，包括具有底板（211）、侧墙（212）及弯折部（213）的背板（210），侧墙（212）具有第一端（212A）和第二端（212B），底板（211）与第一端（212A）连接，弯折部（213）与第二端（212B）连接并设于侧墙（212）外侧，与侧墙（212）成一夹角。液晶背光模组固定组件进一步包括具有卡孔（221）的胶框（220），弯折部（213）对应嵌于卡孔（221）中，用于胶框（220）与背板（210）扣合。背板（210）及胶框（220）的连接方式不仅适合灯条（230）和背板（210）独立制作的液晶背光模组结构，还能适用于设置有灯条驱动电路（232）的背板（210）所形成的液晶背光模组结构，且制作工艺简单，组装方便，结构稳定可靠。

Description

说 明 书
液晶背光模组及其固定组件 技术领域
本发明涉及液晶显示技术领域， 尤其是液晶背光模组的结构改进。 背景技术
现有的液晶背光模组， 如图 1所示， 包括： 前框 140、 灯条 130、 光学元 件层 160、 面板 150， 以及背板 110和胶框 120， 该背板 110设有卡勾 112， 与 设于所述胶框 120上的卡孔 121对应， 所述胶框 120扣合于所述背板 110上。 所述灯条 130设于背向卡勾 112的背板 110—侧， 所述光学元件层 160依次设 于所述背板 110底板上。 所述前框 140—侧抵于所述胶框 120外侧， 另一侧压 于面板 150上方， 限制所述面板 150滑出。 由于灯条 130的驱动电路（图中未 示出） 装设在驱动电路板 131上， 然后驱动电路板 131再与背板 110连接。这 种设计使得灯条 130表面到前框 140外侧的距离 L1较大， 不能满足边框縮窄 的要求。 目前为了实现窄边框化， 有人将背板拿掉， 这样导致整个模组的机械 强度大大减弱，容易引入其他问题； 也有将胶框部分窄化，但是窄化程度较小。
另外， 如图 2所示， 也有人在背板 110侧墙 112上直接打件灯条 130的驱 动电路。 由于驱动电路的厚度很薄， 远小于驱动电路板的厚度， 这种设计使得 灯条 130表面到前框 140外侧距离 L2小于传统架构的 L1 , 即节省了灯条 130 驱动电路板的厚度， 实现窄边框设计。 但是该设计的胶框与背板难以固定。 这是由于传统的液晶背光模组中， 可以在背板侧墙上制作出卡勾， 在胶框制作 出相应的卡孔， 以此来固定胶框。 但是图 2所示的液晶背光模组结构中， 由于 背板 110的侧墙 112上内嵌有原灯条 130的驱动电路， 侧墙 112布满了用来驱 动 LED灯工作的电路， 无法在该侧墙 112上开设卡扣或螺丝孔来固定该胶框 120。 依靠胶框 120和背板 110相互抵靠来组装的液晶背光模组， 连接不稳定， 极易影响液晶的工作性能。
发明内容
为解决上述问题， 本发明提供液晶背光模组的固定组件， 以及采用这种固 定组件形成的液晶背光模组。 这种液晶背光模组固定组件， 包括；
具有底板、 侧墙及弯折部的背板， 所述侧墙具有第一端和第二端， 所述底 板与所述第一端连接； 所述弯折部与所述第二端连接并设于所述侧墙外侧， 与 所述侧墙成一夹角；
具有卡孔的胶框， 所述弯折部对应嵌于所述卡孔中， 用于所述胶框与所述 第一侧壁扣合。
优选地， 所述弯折部、 侧墙和底板是一体成型的。
优选地， 所述侧墙内嵌有一体成型的驱动电路， 用于为嵌于所述侧墙内侧 的灯条提供工作电路。
本发明还提供一种液晶背光模组， 包括前框、 面板、 灯条、 光学元件层， 还包括固定组件， 所述固定组件包括：
具有底板、 侧墙和弯折部的背板， 所述侧墙具有第一端和第二端， 所述底 板与所述第一端连接，； 所述弯折部与所述第二端连接并设于所述侧墙外侧， 与所述侧墙成一夹角；
具有卡孔的胶框， 所述弯折部对应嵌于所述卡孔中， 用于所述胶框与所述 第一侧壁扣合；
所述光学元件层装载在所述底板上； 所述灯条设于所述侧墙内侧与所述光 学元件层对应； 所述面板装载在所述胶框上方， 所述前框一侧抵靠于所述胶框 外侧， 另一侧抵靠与所述面板外侧， 用于对面板形成限位。
优选地， 所述弯折部、 侧墙和底板是一体成型的。
优选地， 所述灯条包括 LED光源和驱动电路， 所述驱动电路设置于所述 侧墙上， 用于驱动所述 LED光源工作。 有益效果：
本发明提供的液晶背光模组的固定组件， 在背板上制作弯折部， 与胶框上 的卡孔对应，免去在背板上开设卡勾的工序。这种优化的背板及胶框连接方式， 不仅适合灯条和背板独立制作的液晶背光模组结构， 还能适用于设置有灯条驱 动电路的背板形成液晶背光模组的结构， 且制作工艺简单， 组装方便， 结构稳 定可靠。
附图说明 图 1为现有技术的液晶背光模组的结构示意图。
图 2为现有技术另一种液晶背光模组的结构示意图。
图 3A为本发明实施例 1组装前的液晶背光模组结构示意图。
图 3B为本发明实施例 1组装后的液晶背光模组结构示意图。
图 4为本发明实施例 1背板的结构示意图。 图 5为本发明实施例 2组装后的液晶背光模组结构示意图。 具体实施方式
下面结合附图对本发明实施例作详细说明。
实施例 1
如图 3A所示，本实施例的液晶背光模组，包括灯条 230、光学元件层 260、 前框 240， 还包括固定组件， 所述固定组件包括背板 210和胶框 220，
同时结合图 4所示， 该背板 210具有底板 211、 侧墙 212和弯折部 213。 所述侧墙 212具有第一端 212A和第二端 212B , 所述底板 211与所述第一端 212A连接;所述弯折部 213与所述第二端 212B连接并设于所述侧墙 212外侧。 其中， 所述弯折部 213、 侧墙 212和底板 211是一体成型的。
该胶框 220具有卡孔 221， 所述弯折部 213对应嵌于所述卡孔 221中， 用 于所述胶框 220与所述背板 210扣合。
该弯折部 213向所述侧墙 212方向弯折， 使得弯折部 213在侧墙 212外 侧形成一 "凸块"， 该胶框 220的卡孔 221对应所述弯折部 213卡合。 为获得 最窄化的边框效果， 弯折部 213可紧贴于侧墙 212外壁， 如图 3A或图 3B所 示。 该结构同样能利用卡孔 221扣于该弯折部 213， 使胶框 220与背板 210稳 定连接。
所述灯条 230包括 LED光源 231和驱动电路板 232， 所述驱动电路板 232 上装设有驱动电路， 用于驱动所述 LED光源 231工作。 组装后的的结构图如 3B所示。 组装时， 所述光学元件层 260装载在所述底板 211上。 该灯条 230 设于所述侧墙 212内侧， LED光源 231与所述光学元件层 260对应， 由驱动电 路板 232与侧墙 212连接。 所述面板 250装载在所述胶框 220上方， 最后前框 240—侧抵靠该胶框 220外侧， 另一侧抵靠面板 250外侧， 限制面板 250不滑 出。 优选地， 上述背板的材质是金属或塑料。
实施例 2 本实施例与实施例 1所不同的是， 灯条的驱动电路直接设置在背板上，进 一歩窄化边框，解决现有技术驱动电路置入背板后，无法用于胶框固定的问题。 如图 5所示，灯条 230的驱动电路直接打件在所述背板 210的侧墙 212上。 由于驱动电路可制作得非常细薄，只露出连接端与灯条 230连接导通，侧墙 212 内侧只露出 LED光源 231与所述光学元件层 260对应， 使灯条 230表面到侧 墙 212的距离减少了实施例 1中驱动电路板的厚度。 由于侧墙 212内布满了驱 动电路， 无法开孔， 因此可以依靠与侧墙 212第二端 212B连接的弯折部 213 来固定胶框 220。 弯折部 213与胶框 220的固定结构可参考实施例 1所示。 本 实施例实现了边框的縮窄后仍能保证胶框与背板的稳定连接。

Claims

权利要求书
1、 液晶背光模组固定组件， 其中， 包括：
具有底板、 侧墙及弯折部的背板， 所述侧墙具有第一端和第二端， 所述底 板与所述第一端连接； 所述弯折部与所述第二端连接并设于所述侧墙外侧， 与 所述侧墙成一夹角；
具有卡孔的胶框， 所述弯折部对应嵌于所述卡孔中， 用于所述胶框与所述 背板的扣合。
2、 根据权利要求 1所述固定组件， 其中， 所述弯折部、 侧墙和底板是一 体成型的。
3、 根据权利要求 1所述固定组件， 其中， 所述侧墙内嵌有一体成型的驱 动电路， 用于驱动设于所述侧墙内侧的 LED光源工作。
4、 根据权利要求 1所述固定组件， 其中， 所述述背板的材质是金属。
5、 根据权利要求 1所述固定组件， 其中， 所述述背板的材质是塑料。
6、 液晶背光模组， 包括前框、 面板、 灯条、 光学元件层， 其中， 还包括 固定组件， 所述固定组件包括：
具有底板、 侧墙和弯折部的背板， 所述侧墙具有第一端和第二端， 所述底 板与所述第一端连接，； 所述弯折部与所述第二端连接并设于所述侧墙外侧， 与所述侧墙成一夹角；
具有卡孔的胶框， 所述弯折部对应嵌于所述卡孔中， 用于所述胶框与所述 第一侧壁扣合；
所述光学元件层装载在所述底板上； 所述灯条设于所述侧墙内侧与所述光 学元件层对应； 所述面板装载在所述胶框上方， 所述前框一侧抵靠于所述胶框 外侧， 另一侧抵靠与所述面板外侧， 用于对面板形成限位。
7、 根据权利要求 6所述液晶背光模组， 其中， 所述弯折部、 侧墙和底板 是一体成型的。
8、 根据权利要求 6所述液晶背光模组， 其中， 所述灯条包括 LED光源 和驱动电路， 所述驱动电路设置于所述侧墙上， 用于驱动所述 LED光源工作。
9、 根据权利要求 6所述固定组件， 其中， 所述驱动电路是直接打件在所 述侧墙上。
10、 根据权利要求 6所述固定组件， 其中， 所述述背板的材质是金属
11、 根据权利要求 6所述固定组件， 其中， 所述背板的材质为塑料。
PCT/CN2013/078170 2013-04-25 2013-06-27 液晶背光模组及其固定组件 Ceased WO2014172998A1 (zh)

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