WO2014059694A1 - 一种液晶模组及其液晶显示器 - Google Patents
一种液晶模组及其液晶显示器 Download PDFInfo
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- WO2014059694A1 WO2014059694A1 PCT/CN2012/083617 CN2012083617W WO2014059694A1 WO 2014059694 A1 WO2014059694 A1 WO 2014059694A1 CN 2012083617 W CN2012083617 W CN 2012083617W WO 2014059694 A1 WO2014059694 A1 WO 2014059694A1
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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
- G02B6/0085—Means for removing heat created by the light source from the package
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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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
Definitions
- the present invention relates to a thin film transistor liquid crystal display (TFT-LCD) technology, and more particularly to a liquid crystal module and a liquid crystal display thereof.
- TFT-LCD thin film transistor liquid crystal display
- the backlights of most TFT-LCD liquid crystal modules mainly adopt the two types of edge type and direct type, but the light weight and thinner size of the liquid crystal module are required. Side-in LED backlighting is used on more and more TFT-LCDs.
- the temperature of the central position of the display panel of the display module of the liquid crystal module may be low, if the display panel The low temperature at the center position affects the display of the screen, especially when displaying 3D images, which is prone to cross talk.
- the prior art In view of the crosstalk phenomenon occurring in the low temperature of the central position of the display panel, the prior art generally overcomes this problem by improving the internal structure of the display panel and the corresponding driving circuit, for example, changing the reticle, but this method increases the structure. Complexity, while increasing costs, adversely optimizes design.
- the technical problem to be solved by the present invention is to provide a liquid crystal module and a liquid crystal display thereof, which can solve the situation that the temperature of the central position of the display panel of the liquid crystal module adopting the side-in LED backlight is low due to the structure of the single tube.
- an aspect of an embodiment of the present invention provides a backlight module, including at least:
- a light guide plate having a light incident surface and a light exit surface, wherein the light incident surface side faces the side-entry backlight; and the optical film group is located above the light guide plate, facing the light emitting surface of the light guide plate a reflector, disposed below the light guide plate;
- a heat conductive layer is a layer of a heat conductive material partially coated or printed on the bottom of the reflector for emitting at least heat generated by the edge-lit backlight Conducted to the middle of the reflector.
- the heat conductive material layer is a heat conductive metal ion layer or a particle layer.
- the heat conducting layer is a mesh heat conducting layer formed by a plurality of intersecting strip-shaped heat conducting strips.
- a backlight module including at least: a side-entry backlight;
- a light guide plate having a light incident surface and a light exit surface, wherein the light incident surface side faces the side-entry backlight; and the optical film group is located above the light guide plate, facing the light emitting surface of the light guide plate a reflector, disposed below the light guide plate;
- a heating layer is disposed at the bottom of the reflector, and the heating layer is a conductive circuit layer at least partially etched or printed on the bottom of the reflector for heating the reflector.
- the heating layer is a mesh heating layer formed by a plurality of intersecting strip heating strips, or a heat conducting layer formed by a plurality of parallel strip-shaped heat conducting strips, or formed by a plurality of discrete block heating strips. Heating layer.
- a liquid crystal display including the backlight module described above is provided.
- the central position of the display panel of the liquid crystal module can be improved.
- the heat conductive layer of the embodiment of the present invention is a layer of a heat conductive material (a metal ion layer or a particle layer) coated or printed on at least a portion of the bottom layer of the reflector, the heating layer is etched or printed on the portion of the reflector.
- the conductive circuit layer does not require large changes to the existing liquid crystal module, and the cost is low, so the application prospect is wide.
- FIG. 1 is a schematic structural view of a light reflecting plate according to an embodiment of the present invention.
- Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
- FIG. 3 is a rear perspective view of a liquid crystal module employing the structure of FIG. 1 according to an embodiment of the present invention
- FIG. 4 is a cross-sectional view of a liquid crystal module according to an embodiment of the present invention
- Figure 5 is a schematic structural view of a reflector according to another embodiment of the present invention.
- Figure 6 is a schematic view showing the structure of a light reflecting plate according to still another embodiment of the present invention.
- the backlight module provided by the present invention includes at least:
- the backlight may be an LED light source, which is typically mounted on a backing plate 3 such as a side or aluminum extrusion;
- the light guide plate 4 is provided with a light incident surface and a light exiting surface, and the light incident surface side faces the side input backlight for conducting light from the backlight 6 to be emitted to the light emitting surface;
- the optical film group 5 is disposed above the light guide plate, and faces the light emitting surface of the light guide plate 4 to receive the light guided by the light guide plate 4.
- the optical film group 5 generally includes a plurality of optical films. a sheet, such as a diffuser plate or a prism plate, such that the light output from the light exit surface of the light guide plate 4 is transmitted through the optical film display panel 7 and disposed on the optical film group 5;
- the reflector 1 is disposed under the light guide plate 4 for reflecting the light emitted from the backlight 6 into the light guide plate 4 as much as possible. ;
- a heat conducting layer 2 is disposed on the bottom of the reflecting plate 1 for conducting at least the heat generated by the side-entry backlight 6 to the middle of the reflecting plate 1.
- the heat conducting layer 2 is at least partially coated or printed on the bottom of the reflector 1 for heat conduction Material layer.
- the layer of thermally conductive material is a thermally conductive metal ion layer or a layer of particles, for example, it may be a metal ion or particle layer of a thermally conductive material such as aluminum (AL), copper (Cu), aluminum oxide (AL203) or the like having good thermal conductivity.
- the heat conducting layer 2 is a mesh heat conducting layer formed of a plurality of intersecting strip-shaped heat conducting strips.
- a layer of thermally conductive material may also be applied or printed over the entire bottom of the reflector 1.
- the heat conducting layer 2 is disposed at the bottom of the reflector 1, the heat emitted by the backlight 6 can be conducted to the entire heat conducting layer 2 by conduction of heat on the heat conducting layer 2, at least to the middle of the reflecting plate 1, Through the reflection of the reflector 1 , through the light guide plate 4 and the optical film group 5 , the middle portion or other parts of the display panel 7 in the liquid crystal module can be heated, thereby preventing the temperature of the central position of the display panel 7 of the liquid crystal module from being low. And the resulting crosstalk phenomenon.
- FIG. 5 it is a schematic structural view of a reflector according to another embodiment of the present invention.
- the heat conductive layer 2 further disposed at the bottom of the reflector 1 is replaced with a heating layer 20 for the reflector 2 The heat is hot.
- the heating layer 20 is a conductive circuit layer which is at least partially etched or printed on the bottom of the reflector 1.
- a power source not shown
- the reflector 2 can be heated and transmitted.
- the middle portion or other portions of the display panel 7 in the liquid crystal module can be heated, thereby preventing the crosstalk phenomenon caused by the low temperature of the central position of the display panel 7 of the liquid crystal module.
- the heating layer 20 is a heating layer formed by a plurality of discrete block heating strips.
- the heating layer 20 can also be designed as a mesh heating layer formed by a plurality of intersecting strip heating strips of FIG. 1, or can also be designed to be thermally conductive by a plurality of parallel strips similar to FIG. A heating layer formed by the strip.
- the heat conducting layer and the heating layer may be simultaneously disposed at the bottom of the reflecting plate 1, the principle of which can be referred to the foregoing description.
- the present invention also provides a liquid crystal display comprising the backlight module disclosed above.
- the heat of the backlight power is transmitted to the middle of the reflector, or directly heated by the reflector, which can improve the temperature of the central position of the display panel of the liquid crystal module, thereby reducing or eliminating the crosstalk caused by the low temperature of the central position of the display panel of the liquid crystal module. phenomenon.
- the heat conductive layer of the embodiment of the present invention is a layer of a heat conductive material (a metal ion layer or a particle layer) coated or printed on at least a portion of the bottom layer of the reflector, the heating layer is etched or printed on the portion of the reflector.
- the conductive circuit layer does not require large changes to the existing liquid crystal module, and the cost is low, so the application prospect is wide.
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- Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
一种背光模组以及采用背光模组的液晶显示器,其中背光模组至少包括:侧入式背光源(6);导光板(4),设有入光面和出光面,入光面侧正对侧入式背光源(6);光学膜片组(5),位于导光板(4)的上方,正对导光板(4)的出光面;反光板(1),设置于导光板(4)下方;在反光板(1)底部进一步设置有导热层(2),用于将侧入式背光源(6)所发出的热量至少传导至反光板(1)的中部。从而可以提高液晶模组的显示面板(7)中央位置温度,减少或消除由于液晶模组的显示面板(7)中央位置温度偏低而导致的串扰现象;且无需对现有的液晶模组进行大的变动,花销低。
Description
一种液晶模组及其液晶显示器
本申请要求于 2012 年 10 月 18 日提交中国专利局、 申请号为 201210397080.X, 发明名称为 "一种液晶模组及其液晶显示器" 的中国专利 申请的优先权, 上述专利的全部内容通过引用结合在本申请中。 技术领域
本发明涉及薄膜晶体管液晶显示器( Thin Film Transistor Liquid Crystal Display, TFT-LCD )技术, 特别涉及一种液晶模组及其液晶显示器。
背景技术
目前大多的 TFT-LCD的液晶模组的背光主要采用侧入式( Edge type ) 和直下式(Direct type ) 两种类型, 但随着对液晶模组要求重量更轻、 尺寸 更薄等的趋势, 在愈来愈多的 TFT-LCD上采用侧入式 LED背光设计。
但是, 在液晶模组中采用侧入式 LED背光时, 存在一些不足之处, 例 如, 液晶模组的显示模块的显示面板(Panel )中央位置的温度可能会存在偏 低的情形, 如果显示面板中央位置的温度偏低, 会影响画面的显示效果, 特 别是在显示 3D画面时, 易产生串扰现象(cross talk )。
针对由显示面板中央位置的温度偏低而出现的串扰现象,现有技术中通 常通过改善显示面板内部结构及相应驱动电路来克服这个不足, 例如对光罩 进行变动, 但是这种方式会增加结构复杂度, 且同时增加成本, 不利成本优 化设计。
发明内容
本发明所要解决的技术问题在于, 提供一种液晶模组及其液晶显示器, 能采用相对筒单的结构解决采用侧入式 LED背光的液晶模组的显示面板中 央位置温度偏低的情形。
为了解决上述技术问题, 本发明的实施例的一方面提供了一种背光模 组, 至少包括:
侧入式背光源;
导光板, 设有入光面和出光面, 所述入光面侧正对所述侧入式背光源; 光学膜片组, 位于所述导光板的上方, 正对所述导光板的出光面; 反光板, 设置于所述导光板下方;
在所述反光板底部进一步设置有导热层, 所述导热层为局部至少涂覆或 印刷于所述反光板底部上的导热材料层, 用于将所述侧入式背光源所发出的 热量至少传导至反光板的中部。
其中, 所述导热材料层为导热金属离子层或微粒层。
其中, 所述导热层为由多条交叉带状导热条形成的网格式导热层。 相应地, 本发明实施例的另一方面, 提供了一种背光模组, 至少包括: 侧入式背光源;
导光板, 设有入光面和出光面, 所述入光面侧正对所述侧入式背光源; 光学膜片组, 位于所述导光板的上方, 正对所述导光板的出光面; 反光板, 设置于所述导光板下方;
在所述反光板底部进一步设置有加热层, 所述加热层为至少局部蚀刻或 印刷在所述反光板底部上的导电线路层, 用于为所述反光板加热。
其中, 所述加热层为由多条交叉带状加热条形成的网格式加热层、 或者 为由多条平行的带状导热条形成的导热层, 或者由多个离散的块状加热条形 成的加热层。
相应地, 本发明实施例的再一方面, 提供了一种液晶显示器, 包括前面 所述的背光模组。
实施本发明实施例, 具有如下有益效果:
根据本发明的实施例, 通过在反光片的底部设置有导热层或加热层, 将 背光电源的热量传导到反光片的中部, 或者直接为反光片加热, 可以提高液 晶模组的显示面板中央位置温度,从而减少或消除由于液晶模组的显示面板 中央位置温度偏低而导致的串扰现象。
另外, 由于本发明的实施例的导热层为至少涂覆或印刷于所述反光板底 层局部的导热材料层(金属离子层或微粒层), 加热层为蚀刻或印刷在所述 反光板局部的导电线路层, 无需对现有的液晶模组进行大的变动, 花销低, 故应用前景广泛。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面 描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1是根据本发明一个实施例中反光板的结构示意图;
图 2是图 1中 A-A向剖面示意图;
图 3是根据本发明实施例中采用图 1的结构的液晶模组的后视示意图; 图 4是根据本发明的实施例的液晶模组的剖面图;
图 5是根据本发明另一个实施例中反光板的结构示意图;
图 6是根据本发明再一个实施例中反光板的结构示意图。
具体实施方式
下面将结合附图对本发明的具体实施例进行说明。
请参见图 1至图 4所示, 示出了本发明的第一实施例。 其中, 本发明提 供的背光模组, 至少包括:
侧入式背光源 6, 该背光源可以为 LED光源, 其一般固定在诸如位于侧 部的背板 3或铝挤上;
导光板 4,设有入光面和出光面,所述入光面侧正对所述侧入式背光源, 用于将来自背光源 6的光线传导至出光面上射出;
光学膜片组 5 , 位于所述导光板的上方, 正对所述导光板 4的出光面, 接收所述导光板 4传导的光线, 其中, 光学膜片组 5—般包括有若干个光学 膜片, 例如扩散板或棱镜板等, 使从导光板 4出光面输出的光线透过光学膜 显示面板 7, 设置在光学膜片组 5上;
反光板 1 , 设置于所述导光板 4下方, 用于将背光源 6发出的光线尽可 能多地反射到导光板 4中。;
在反光板 1底部进一步设置有导热层 2, 用于将侧入式背光源 6所发出 的热量至少传导至反光板 1的中部。
其中,该导热层 2为至少局部涂覆或印刷于所述反光板 1底部上的导热
材料层。 该导热材料层为导热金属离子层或微粒层, 例如其可以为具有良好 导热性能的铝 (AL )、 铜 (Cu )、 氧化铝 (AL203 )等等导热材料的金属离子 或微粒层。
如图 1中所示, 该导热层 2为由多条交叉带状导热条形成的网格式导热 层。 在另外的实施例中, 亦可以在反光板 1的整个底部上都涂覆或印刷导热 材料层。
由于在反光板 1的底部设置了导热层 2,通过热量在导热层 2上的传导, 可以将背光源 6所发出的热量传导到整个导热层 2上, 至少会传导至反光板 1的中部, 通过反光板 1的反射作用, 透过导光板 4以及光学膜片组 5 , 可 以加热液晶模组中显示面板 7的中部或其他各部位,从而防止液晶模组的显 示面板 7中央位置温度偏低而产生的串扰现象。
请参见图 5所示, 是根据本发明另一个实施例中反光板的结构示意图; 其中,将在反光板 1底部进一步设置的导热层 2替换为加热层 20,用于为所 述反光板 2力口热。
其中, 该加热层 20为至少局部蚀刻或印刷在所述反光板 1底部的导电 线路层, 通过给该导电线路层施加电源 (未画出), 可以为反光板 2加热, 同样透过。 透过导光板 4以及光学膜片组 5 , 可以加热液晶模组中显示面板 7的中部或其他各部位, 从而防止液晶模组的显示面板 7中央位置温度偏低 而产生的串扰现象。 如图 5中, 该加热层 20为多个离散的块状加热条形成 的加热层。
可以理解的是, 该加热层 20亦可以设计为类似图 1的由多条交叉带状 加热条形成的网格式加热层、或者还可以设计成类似图 5的为由多条平行的 带状导热条形成的加热层。
还可以理解的是, 在其他的实施例中, 也可以在反光板 1的底部同时设 置导热层和加热层, 其原理可参照前述的描述。
本发明还提供了一种液晶显示器, 该液晶显示器包括前述所揭示的背光 模组。
实施本发明实施例, 具有如下有益效果:
根据本发明的实施例, 通过在反光片的底部设置有导热层或加热层, 将
背光电源的热量传导到反光片的中部, 或者直接为反光片加热, 可以提高液 晶模组的显示面板中央位置温度,从而减少或消除由于液晶模组的显示面板 中央位置温度偏低而产生的串扰现象。
另外, 由于本发明的实施例的导热层为至少涂覆或印刷于所述反光板底 层局部的导热材料层(金属离子层或微粒层), 加热层为蚀刻或印刷在所述 反光板局部的导电线路层, 无需对现有的液晶模组进行大的变动, 花销低, 故应用前景广泛。
以上所揭露的仅为本发明较佳实施例而已, 当然不能以此来限定本发明 之权利范围, 因此等同变化, 仍属本发明所涵盖的范围。
Claims
1、 一种背光模组, 至少包括:
侧入式背光源;
导光板, 设有入光面和出光面, 所述入光面侧正对所述侧入式背光源; 光学膜片组, 位于所述导光板的上方, 正对所述导光板的出光面; 反光板, 设置于所述导光板下方;
其中, 在所述反光板底部进一步设置有导热层, 所述导热层为至少局部 涂覆或印刷于所述反光板底层上的导热材料层,用于将所述侧入式背光源所 发出的热量至少传导至反光板的中部。
2、 如权利要求 1所述的背光模组, 其中, 所述导热材料层为导热金属 离子层或微粒层。
3、 如权利要求 1所述的背光模组, 其中, 所述导热层为由多条交叉带 状导热条形成的网格式导热层, 或者为由多条平行的带状导热条形成的导热 层。
4、 如权利要求 2所述的背光模组, 其中, 所述导热层为由多条交叉带 状导热条形成的网格式导热层, 或者为由多条平行的带状导热条形成的导热 层。
5、 一种背光模组, 至少包括:
侧入式背光源;
导光板, 设有入光面和出光面, 所述入光面侧正对所述侧入式背光源; 光学膜片组, 位于所述导光板的上方, 正对所述导光板的出光面; 反光板, 设置于所述导光板下方;
其中, 在所述反光板底部进一步设置有加热层, 所述加热层为至少局部 蚀刻或印刷在所述反光板底部上的导电线路层, 用于为所述反光板加热。
6、 如权利要求 5所述的背光模组, 其中, 所述加热层为由多条交叉带 状加热条形成的网格式加热层、或者为由多条平行的带状导热条形成的导热 层, 或者由多个离散的块状加热条形成的加热层。
7、 一种液晶显示器, 至少包括背光模组, 所述背光模组至少包括: 侧入式背光源;
导光板, 设有入光面和出光面, 所述入光面侧正对所述侧入式背光源; 光学膜片组, 位于所述导光板的上方, 正对所述导光板的出光面; 反光板, 设置于所述导光板下方;
其中, 在所述反光板底部进一步设置有导热层, 用于将所述侧入式背光 源所发出的热量至少传导至反光板的中部; 或者在所述反光板底部进一步设 置有加热层, 用于为所述反光板加热。
8、 如权利要求 7所述的液晶显示器, 其中, 所述导热层为至少局部涂 覆或印刷于所述反光板底层上的导热材料层。
9、 如权利要求 8所述的液晶显示器, 其中, 所述导热材料层为导热金 属离子层或微粒层。
10、 如权利要求 7所述的液晶显示器, 其中, 所述导热层为由多条交叉 带状导热条形成的网格式导热层,或者为由多条平行的带状导热条形成的导 热层。
11、 如权利要求 8所述的液晶显示器, 其中, 所述导热层为由多条交叉 带状导热条形成的网格式导热层,或者为由多条平行的带状导热条形成的导 热层。
12、 如权利要求 9所述的液晶显示器, 其中, 所述导热层为由多条交叉 带状导热条形成的网格式导热层,或者为由多条平行的带状导热条形成的导 热层。
13、 如权利要求 7所述的液晶显示器, 其中, 所述加热层为至少局部蚀 刻或印刷在所述反光板底部上的导电线路层。
14、 如权利要求 7所述的液晶显示器, 其中, 所述加热层为由多条交叉 带状加热条形成的网格式加热层、或者为由多条平行的带状导热条形成的导 热层, 或者由多个离散的块状加热条形成的加热层。
15、 如权利要求 13所述的液晶显示器, 其中, 所述加热层为由多条交 叉带状加热条形成的网格式加热层、或者为由多条平行的带状导热条形成的 导热层, 或者由多个离散的块状加热条形成的加热层。
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| US13/699,698 US8985833B2 (en) | 2012-10-18 | 2012-10-26 | Backlight module and a liquid crystal display using the same |
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| CN201210397080.XA CN102889525B (zh) | 2012-10-18 | 2012-10-18 | 一种液晶模组及其液晶显示器 |
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| CN202101038U (zh) * | 2011-03-25 | 2012-01-04 | 青岛海信电器股份有限公司 | 一种温度平衡装置及采用其的背光模组 |
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| CN101556008B (zh) * | 2007-03-09 | 2012-02-01 | 友达光电股份有限公司 | 侧光式背光模块的组装方法 |
| CN201133988Y (zh) * | 2007-12-25 | 2008-10-15 | 上海广电光电子有限公司 | 侧光式背光模组 |
| US9429786B2 (en) * | 2010-04-16 | 2016-08-30 | Samsung Electronics Co., Ltd. | Display apparatus including temperature compensation unit, display module applied therein, and method for controlling temperature of display module |
| CN102155685A (zh) * | 2011-02-18 | 2011-08-17 | 深圳市华星光电技术有限公司 | 背光模块 |
| CN202048463U (zh) * | 2011-05-06 | 2011-11-23 | 京东方科技集团股份有限公司 | Led背光源以及液晶面板 |
| CN102588848A (zh) * | 2012-03-13 | 2012-07-18 | 创维液晶器件(深圳)有限公司 | 侧入光式led液晶背光模组 |
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| JPH11283427A (ja) * | 1998-03-31 | 1999-10-15 | Toshiba Lighting & Technology Corp | バックライト装置 |
| CN1955817A (zh) * | 2005-10-24 | 2007-05-02 | Lg电子株式会社 | 具有散热层的背光单元、具有散热层的显示设备以及用于制造散热层的方法 |
| CN101042481A (zh) * | 2006-03-21 | 2007-09-26 | 株式会社半导体能源研究所 | 背光灯装置以及显示装置 |
| CN101963310A (zh) * | 2010-07-29 | 2011-02-02 | 深圳市华星光电技术有限公司 | 一种背光模组及其加热器件 |
| CN202101038U (zh) * | 2011-03-25 | 2012-01-04 | 青岛海信电器股份有限公司 | 一种温度平衡装置及采用其的背光模组 |
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| CN102889525B (zh) | 2016-03-30 |
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