WO2014036746A1 - 一种背光模组及其液晶显示器 - Google Patents
一种背光模组及其液晶显示器 Download PDFInfo
- Publication number
- WO2014036746A1 WO2014036746A1 PCT/CN2012/081287 CN2012081287W WO2014036746A1 WO 2014036746 A1 WO2014036746 A1 WO 2014036746A1 CN 2012081287 W CN2012081287 W CN 2012081287W WO 2014036746 A1 WO2014036746 A1 WO 2014036746A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light guide
- guide plate
- positioning device
- plate
- optical film
- 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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Classifications
-
- 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
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/54—Arrangements for reducing warping-twist
Definitions
- the present invention relates to a thin film transistor liquid crystal display (TFT-LCD) technology, and more particularly to a backlight module and a liquid crystal display thereof.
- TFT-LCD thin film transistor liquid crystal display
- the liquid crystal display module includes a liquid crystal display panel 2, a backlight module 1, and a supporting device.
- the backlight module 1 is disposed behind the liquid crystal display panel to provide light to the liquid crystal display panel.
- the supporting device is configured to support and fix the liquid crystal display panel and the backlight module.
- the support device includes a back plate 3, a plastic frame 1 and an annular glass plate 5 covering the plastic frame, so that the liquid crystal display panel 2 is surrounded by the frame 6, and the liquid crystal display module is mounted on the liquid crystal display device. Inside the outer casing.
- the back plate 3 includes a rectangular bottom plate 30 and a plurality of support plates 31.
- the support plates 31 extend from the four edges of the bottom plate 30 in the direction of the vertical bottom plate 30, so that the bottom plate 30 and the support plate 31 together form a receiving body. space.
- the backlight module 1 includes a light source (not shown), a reflector 14, a light guide plate 13, and an optical film group (10, 11, 12). The reflector 14 , the light guide plate 13 and the optical film group are sequentially disposed on the bottom plate 30 and are received in the receiving space for providing uniform planar light to the liquid crystal display panel 2 .
- the optical film set includes a plurality of optical films, such as a diffusing plate or a prism plate, and is disposed on the light emitting surface of the light guiding plate 13, so that the light output from the light emitting surface passes through the optical film group to spread the light more uniformly. And enhance the positive brightness of the light.
- the plastic frame 4 surrounds the back plate, and includes an annular fixing frame 40 surrounding the outer side of the support plate 31, and a plurality of platforms 41 extending inwardly from each side of the fixing frame 40 in a direction parallel to the bottom plate. And, these platforms 41 are supported by the support plate 31, and The sub-segment is mounted on the outer peripheral edge of the optical film group, and a certain distance is formed between the optical film group and the optical film group.
- the pitch should be controlled between 0.15-0.2 mm to ensure optical.
- the diaphragm group has sufficient expansion space when heated to prevent unevenness of the optical film group from Waving deformation. Then, in the above conventional liquid crystal display device, the stage is supported only by the support plate, and the distance between the edge of the optical film group and the support plate is limited, when the optical film group is subjected to heat from the light source, especially in acceptance During high-temperature testing, it is prone to thermal expansion and cause insufficient space to cause wave-like deformation (Waving), which affects the picture effect of the liquid crystal display device, and even causes the optical film set to fall off.
- Wave-like deformation Wave-like deformation
- the technical problem to be solved by the present invention is to provide a backlight module and a liquid crystal display thereof, which can well avoid the adverse consequences of the optical film set being deformed by heat.
- an aspect of an embodiment of the present invention provides a backlight module, including:
- a light guide plate having a light incident surface and a light exit surface, wherein the light incident surface side is provided with a light source;
- An optical film set located above the light guide plate, facing the light exit surface of the light guide plate, at least one side of at least one of the optical film groups extending with a foldable portion;
- At least one positioning device is disposed on at least one side of the light guide plate except the light incident surface, and the positioning device and the side surface of the light guide plate form an accommodating space, and the optical film may be The folded portion is folded and accommodated in the accommodating space.
- the positioning device is substantially strip-shaped, and includes:
- Two fixing portions are respectively disposed at two ends of the positioning device, and the two fixing portions are in the same horizontal plane for being attached to the side surface of the light guide plate;
- the bridge portion is disposed between the two fixing portions, and an empty space is formed between the bridge portion and a horizontal plane where the two fixing portions are located.
- the positioning device further comprises:
- the at least one bonding portion is formed to extend outward from at least one of the two fixing portions of the positioning device in a direction perpendicular to the fixing portion for fitting the top surface or the bottom surface of the light guide plate.
- the two fixing portions of the positioning device are fixed to the side surface of the light guide plate by adhesion; the bonding portion of the positioning device and the top surface or the bottom surface of the light guide plate are bonded Fixed.
- the optical film set includes a first diffusing plate, a prism plate, and a second diffusing plate disposed from top to bottom, and the first diffusing plate, the prism plate, and the second diffusing plate extend at least on the same side. And a foldable portion that is folded perpendicular to each of the optical film sheets, the foldable portion being received in the accommodating space formed by the positioning device and the side surface of the light guide plate.
- a reflector is further disposed on the bottom surface of the light guide plate.
- the light guide plate and the light source are fixed by the back plate.
- a liquid crystal display is further provided, comprising the foregoing backlight module.
- the folded portion of each optical die in the optical die set is received into the space between the positioning device and the side plate of the light guide plate, that is, the fixed positioning of the optical die set can be realized. , very simple;
- the optical die while ensuring the fixing of the optical die set, a certain margin space is reserved, and when the optical die is subjected to thermal expansion or cold shrinkage, it can be fixed in a space formed between the positioning device and the light guide plate. Therefore, the wave deformation of the optical die due to thermal expansion or cold shrinkage is prevented; in addition, the positioning device can be simultaneously applied to liquid crystal display modules of various models, and the mold opening is not required for each model, and the application is widely used. And save production costs.
- FIG. 1 is a schematic cross-sectional view of a conventional liquid crystal display module
- FIG. 2 is a schematic exploded view of components in a backlight module according to an embodiment of the invention
- FIG. 3 is a schematic view showing the combination of components in FIG.
- Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
- FIG. 5 is a partial cross-sectional view showing a liquid crystal display module using the backlight module of FIG. 3; 6 is a schematic exploded view of components in a backlight module according to another embodiment of the present invention; FIG. 7 is a schematic view showing the combination of components in FIG.
- Figure 8 is a cross-sectional view taken along line B-B of Figure 7;
- FIG. 9 is a partial cross-sectional view showing a liquid crystal display module using the backlight module of FIG. 7. detailed description
- the backlight module 1 includes:
- the light guide plate 13 is provided with a light incident surface and a light exit surface, and a light source is disposed on the light incident surface side.
- the light incident surface is disposed on one side of the light guide plate 13, and the light exit surface is the light guide plate 13.
- a top surface; an optical film set, located above the light guide plate 13, a light-emitting surface of the light guide plate 13, and at least one side of the at least one optical film in the optical film group has a foldable portion.
- the optical film set includes a first diffusing plate 10, a prism plate 11, and a second diffusing plate 12 disposed from top to bottom, wherein the first diffusing plate 10, the prism plate 11, and the second diffusing plate 12 are at least Extending on the same side is a foldable portion (100, 110, 120 respectively in the drawing), the foldable portion 100, 110, 120 is folded perpendicular to each optical film; the optical film set can output the light output surface Light is transmitted through the reflector 14 and disposed on the bottom surface of the light guide plate 13;
- At least one positioning device 15 is disposed on at least one side surface 130 of the light guide plate 13 except for the light incident surface.
- the positioning device 15 and the side surface 130 of the light guide plate 13 are formed with an accommodating space 154.
- the foldable portion 110, 110, 120 is folded and received in the accommodating space 154.
- the positioning device 15 is substantially strip-shaped and includes:
- the two fixing portions 150 are respectively disposed at two ends of the positioning device, and the two fixing portions are in the same horizontal plane for being attached to the side surface 130 of the light guide plate 13;
- the bridge portion 151 is disposed between the two fixing portions 150 and extends from the fixing portion 150.
- the bridge portion 151 and the horizontal plane where the two fixing portions 150 are located can form an empty space. .
- the two fixing portions 150 of the positioning device 15 and the side surface 130 of the light guide plate 13 are fixed by bonding, for example, bonding such as tape or glue.
- bonding for example, bonding such as tape or glue.
- the inner side of the bridge portion 151 of the positioning device 15 and the side surface 130 of the light guide plate 13 are formed with an accommodation space 154.
- the optical film can be used.
- the foldable portion 110, 110, 120 of the sheet is folded and received in the accommodating space 154.
- positioning device 15 Only one positioning device 15 is shown in the above-described embodiment, and it is to be understood that it is not limited herein and is merely illustrative. In other embodiments, a positioning device may be disposed on the other side of the light guide plate 13 except for the light surface, or a corresponding positioning device may be disposed on two of the sides. Accordingly, it is necessary to extend a corresponding folded portion on the corresponding side of each optical film. Further, two or more positioning means can be fitted to each side of the light guide plate 13, and a corresponding number of folded portions need to be extended on the side of each optical film.
- the liquid crystal display module includes a liquid crystal display panel 2, a backlight module 1 and a supporting device.
- the backlight module 1 according to the present invention is disposed under the liquid crystal display panel 2 to provide light to the liquid crystal display panel 2.
- the supporting device is used to support and fix the liquid crystal display panel 2 and the backlight module 1.
- the support device includes a back plate 3, a plastic frame 1 and an annular glass plate 5 covering the plastic frame, so that the liquid crystal display panel 2 is surrounded by a frame 6 to mount the liquid crystal display module to the liquid crystal display device.
- the backplane 3 includes a rectangular bottom plate 30 and a plurality of support plates 31 extending from the four edges of the bottom plate 30 in the direction of the vertical bottom plate 30, so that the bottom plate 30 and the support plate 31 together form a receiving space.
- the backlight module 1 includes a light source (not shown), a reflection plate 14, a light guide plate 13, and an optical film group (including the first diffusion plate 10, the prism plate 11, and the second diffusion plate 12).
- the reflector 14 , the light guide plate 13 and the optical film group are sequentially disposed on the bottom plate 30 and are received in the receiving space for providing uniform light to the liquid crystal display panel 2 .
- the optical film group can transmit the light outputted from the light-emitting surface through the circumference of the optical film group, and includes an annular fixing frame 40 surrounding the outer side of the support plate 31, and a plurality of platforms 41 from each of the fixing frames 40. The sides extend inwardly in a direction parallel to the bottom plate, and the platforms 41 are supported by the support plate 31 and partially spanned over the outer peripheral edges of the optical film set.
- the optical module of the backlight module can be collapsed.
- a certain margin space is reserved, and when the optical die is thermally expanded or contracted by cooling, it can be fixed between the positioning device and the light guide plate. In the space, the wave deformation of the optical die due to thermal expansion or cold shrinkage is prevented; in addition, the positioning device can be shared among various types of liquid crystal display modules, and is widely used.
- FIG. 9 is a schematic cross-sectional view showing a liquid crystal display module using the backlight module of FIG.
- the positioning device 16 is slightly different from the positioning device 15 of Figure 2, the positioning device 16 comprising:
- the two fixing portions 160 are respectively disposed at two ends of the positioning device 16, and the two fixing portions are in the same horizontal plane for being attached to the side surface 130 of the light guide plate 13;
- the bridge portion 161 is disposed between the two fixing portions 160 and extends from the fixing portion 160.
- the bridge portion 161 and the horizontal plane where the two fixing portions 160 are located can form an empty space.
- the two engaging portions 162 are respectively formed from the two sides of the two fixing portions 160 of the positioning device 160 and extend outward in a direction perpendicular to the fixing portion 160 for respectively fitting the top of the light guide plate 13 Face and bottom.
- the fixing portion 160 and the two fitting portions 162 are formed in a substantially "["-shaped structure so as to be able to catch the side end of the light guide plate. With this shape, the positioning device 160 can be more tightly and firmly bonded to the light guide plate 13.
- the two fixing portions 150 of the positioning device 15 and the side surface 130 of the light guide plate 13 are fixed by bonding, for example, by using adhesive tape or glue, etc.; similarly, the bonding portion 162
- the top surface and the bottom surface of the light guide plate 13 can be fixed by adhesion.
- the inner side of the bridge portion 161 of the positioning device 16 and the side surface 130 of the light guide plate 13 are formed with an accommodation space 164.
- the foldable portions 110, 110, 120 of each of the optical films may be folded and accommodated in the accommodating space 164.
- only one bonding portion 162 may be disposed in the positioning device 16.
- TFT-LCD thin film transistor liquid crystal display
- the backlight module and the liquid crystal display provided by the embodiments of the present invention have the following beneficial effects:
- the folded portion of each optical die in the optical die set is received into the space between the positioning device and the side plate of the light guide plate, that is, the fixed positioning of the optical die set can be realized. , very simple;
- the optical die while ensuring the fixing of the optical die set, a certain margin space is reserved, and when the optical die is subjected to thermal expansion or cold shrinkage, it can be fixed in a space formed between the positioning device and the light guide plate. Therefore, the wave deformation of the optical die due to thermal expansion or cold shrinkage is prevented; in addition, the positioning device can be simultaneously applied to liquid crystal display modules of various models, and the mold opening is not required for each model, and the application is widely used. And save production costs.
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Description
一种背光模组及其液晶显示器
本申请要求于 2012 年 9 月 7 日提交中国专利局、 申请号为 201210328870.2、 发明名称为 "一种背光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, 特别涉及一种背光模组及其液晶显示器。
背景技术
TFT-LCD 已经成为了现代信息技术以及视讯产品中非常重要的显示平 台。 如图 1所示, 示出了一种液晶显示模块的截面图。 该液晶显示模块包括 液晶显示面板 2、 背光模组 1和支撑装置。 其中, 背光模组 1设置于液晶显 示面板后方以对液晶显示面板提供光线; 支撑装置用于以支撑及固定该液晶 显示面板及所述背光模块。 该支撑装置包括背板 3、 胶框 1以及覆盖于该胶 框上的环形玻璃板 5, 使所述液晶显示面板 2四周被边框 6所包覆, 进而将 该液晶显示模块安装至液晶显示装置的外壳内。所述背板 3包括矩形底板 30 及若干个支撑板 31 ,这些支撑板 31分别自所述底板 30四边边缘以垂直底板 30的方向延伸而出, 以使底板 30与支撑板 31共同形成一个收容空间。所述 背光模组 1包括光源(未图示)及反射板 14、导光板 13以及光学膜片组( 10、 11、 12 )。 该反射板 14、 导光板 13及光学膜片组依次设置于底板 30上, 并 收容于该收容空间内, 用以向液晶显示面板 2提供均匀的平面光。 光学膜片 组包括若干个光学膜片, 例如扩散板或棱镜板等, 设置于导光板 13 的出光 面,使出光面输出的光线透过光学膜片组的作用而使光线更为均勾扩散以及 提升光线的正面辉度。 所述胶框 4环绕于背板四周, 其包括环形固定框 40, 环绕于支撑板 31外侧, 以及若干个平台 41 ,从该固定框 40的每一侧边以平 行于底板的方向向内延伸而出, 这些平台 41受到支撑板 31的支撑, 并且部
分架设于该光学膜片组的四周外边缘之上,且与该光学膜片组之间形成有一 定间距, 就一般所知的, 该间距应控制在 0.15-0.2毫米之间, 以保证光学膜 片组在受热时有足够的膨胀空间, 防止光学膜片组出现高低不平的波浪状 ( Waving )变形。 然后,在上述现有液晶显示装置中,平台仅靠支撑板支撑, 且光学膜片组边缘与支撑板之间的距离有限, 当光学膜片组在来自光源的热 作用下, 尤其是在接受高温测试时, 容易受热膨胀导致空间不足而造成波浪 状(Waving )变形, 影响液晶显示装置的画面效果, 甚至造成光学膜片组脱 落。
发明内容
本发明所要解决的技术问题在于, 提供一种背光模组及其液晶显示器, 可以艮好地避免光学膜片组由于受热变形而成的不良后果。
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, 包括:
导光板, 设有入光面和出光面, 所述入光面侧设有光源;
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, 所述 光学膜片组中的至少一个光学膜片的至少一个侧边延伸有可折叠部;
至少一个定位装置,设置在所述导光板的除入光面之外的至少一个侧面 上, 所述定位装置与所述导光板的侧面形成有容置空间, 所述光学膜片的所 述可折叠部经折叠后容纳于所述容置空间内。
优选地, 所述定位装置为大致为条形, 包括:
两个固定部, 分别设置于所述定位装置的两端, 所述两个固定部处于同 一水平面, 用于贴合在所述导光板的侧面上;
桥形部, 设置在所述两个固定部之间, 所述桥形部与所述两个固定部所 处的水平面之间形成有空纳空间。
优选地, 所述定位装置进一步包括:
至少一个贴合部, 从所述定位装置的两个固定部的至少一侧以垂直于所 述固定部的方向向外延伸出而形成, 用于贴合所述导光板的顶面或底面。
优选地, 所述定位装置的两个固定部与所述导光板的侧面通过粘合的方 式固定; 所述定位装置的贴合部与所述导光板的顶面或底面通过粘合的方式
固定。
优选地, 所述光学膜片组包括从上至下设置的第一扩散板、 棱镜板、 第 二扩散板, 所述第一扩散板、 棱镜板、 第二扩散板至少在同一侧面延伸有可 折叠部, 所述可折叠部经折叠与各光学膜片垂直, 所述可折叠部容纳于所述 定位装置与所述导光板的侧面形成的容置空间中。
优选地, 在所述导光板底面进一步设置有反光板。
优选地, 所述导光板和光源通过背板进行固定。
相应地, 本发明的实施例的另一方面, 还提供一种液晶显示器, 其中, 包括前述的背光模组。
实施本发明实施例所提供的一种背光模组及其液晶显示器, 具有如下有 益效果:
根据本发明的实施例, 通过采用定位装置, 将光学模片组中的各光学模 片的折叠部收纳进定位装置与导光板侧板之间的空间, 即可以实现光学模片 组的固定定位, 非常筒单;
同时, 在保证光学模片组固定的同时, 预留了一定的余量空间, 在光学 模片受热膨胀或受冷收缩时, 其均可以固定于定位装置与导光板之间形成的 空间里, 从而防止了光学模片由于热膨胀或冷收缩带来的波浪形变形; 另外, 该定位装置可以同时应用于各种机型的液晶显示模块中, 无需针 对每种机型分别进行开模, 应用广泛, 且节省了生产成本。
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为现有液晶显示模块的截面示意图;
图 2是根据本发明一实施例的背光模组中各部件的爆炸示意图; 图 3是图 2中各部件的组合示意图;
图 4是图 3中 A-A向剖面图;
图 5是采用图 3中的背光模组的液晶显示模块中的局部截面示意图;
图 6是根据本发明的另一实施例的背光模块中各部件的爆炸示意图; 图 7是图 6中各部件的组合示意图;
图 8是图 7中 B-B向剖面图;
图 9是采用图 7中的背光模组的液晶显示模块中的局部截面示意图。 具体实施方式
下面参考附图对本发明的优选实施例进行描述。
请结合图 2至图 4所示, 示出了根据本发明一个实施例的背光模组。 从 中可以看出, 该背光模组 1包括:
导光板 13 ,其设有入光面和出光面,入光面侧设有光源,在该实施例中, 其入光面设置在该导光板 13的一个侧面上, 出光面为该导光板 13的顶面; 光学膜片组, 位于该导光板 13的上方, 正对该导光板 13的出光面, 该 光学膜片组中的至少一个光学膜片的至少一个侧边延伸有可折叠部, 具体 地, 该光学膜片组包括从上至下设置的第一扩散板 10、 棱镜板 11、 第二扩 散板 12, 其中, 该第一扩散板 10、 棱镜板 11、 第二扩散板 12至少在同一侧 面延伸有可折叠部(分别见图中的 100、 110、 120 ), 该可折叠部 100、 110、 120经折叠与各光学膜片相互垂直; 光学膜片组可使出光面输出的光线透过 反光板 14, 设置在该导光板 13底面;
至少一个定位装置 15 , 设置在该导光板 13的除入光面之外的至少一个 侧面 130上,该定位装置 15与该导光板 13的侧面 130形成有容置空间 154, 该各光学膜片的该可折叠部 110、 110、 120经折叠后容纳于该容置空间 154 内。
进一步地, 该定位装置 15为大致为条形, 包括:
两个固定部 150, 分别设置于该定位装置的两端, 该两个固定部处于同 一水平面, 用于贴合在该导光板 13的侧面 130;
桥形部 151 ,设置在该两个固定部 150之间, 由该固定部 150延伸而成, 其中,该桥形部 151与该两个固定部 150所处的水平面之间可形成空纳空间。
在该实施例中, 该定位装置 15的两个固定部 150、 与该导光板 13的侧 面 130通过粘合的方式固定, 例如可以采用诸如胶带或胶水等进行粘合。 在
该定位装置 15与导光板 13的侧面 130固定后, 则该定位装置 15的桥形部 151的内侧与该导光板 13的侧面 130形成有容置空间 154, 此时, 可将该各 光学膜片的该可折叠部 110、 110、 120经折叠后容纳于该容置空间 154内。
在上述的实施例中仅示出了一个定位装置 15 ,可以理解的是,此处非为 限定, 仅为说明的方便。 在其他的实施例中, 在该导光板 13 的除入光面之 外的其他侧面上均可相应设置一个定位装置, 或者在其中两个侧面上设置有 对应的定位装置。 相应地, 在各光学膜片的相应侧面需要延伸出与之相配合 的折叠部。 进一步地, 在导光板 13 的每个侧面也可以配合两个或两个以上 的定位装置, 同样在各光学膜片的该侧面需要延伸出相应数量的折叠部。
如图 5所示,是采用图 3中的背光模组的液晶显示模块中的截面示意图; 此处仅为一个举例, 非为限定本发明的背光模组仅能应用于该种结构的液晶 显示模块。 从中可以看出, 该液晶显示模块包括一液晶显示面板 2、 背光模 组 1及支撑装置; 其中, 根据本发明的背光模组 1设置于液晶显示面板 2的 下方以向液晶显示面板 2提供光线; 支撑装置用于以支撑及固定该液晶显示 面板 2及该背光模组 1。 该支撑装置包括背板 3、 胶框 1以及覆盖于该胶框 上的环形玻璃板 5 , 使该液晶显示面板 2四周被一边框 6所包覆, 进而将该 液晶显示模块安装至液晶显示装置的外壳内。 该背板 3包括矩形底板 30及 若干个支撑板 31 , 这些支撑板 31分别自该底板 30四边边缘以垂直底板 30 之方向延伸而出, 藉使底板 30与支撑板 31共同形成收容空间。 该背光模组 1 包括光源 (未图示)及反射板 14、 导光板 13以及光学膜片组(包括第一 扩散板 10、 棱镜板 11、 第二扩散板 12 )。 该反射板 14、 导光板 13及光学膜 片组依次设置于底板 30上,并收容于该收容空间内,用以向液晶显示面板 2 提供均勾的平面光。 光学膜片组可使出光面输出的光线透过光学膜片组的作 周,其包括一个环绕于支撑板 31外侧的环形固定框 40,以及若干个平台 41 , 从该固定框 40的每一侧边以平行于底板的方向向内延伸而出, 这些平台 41 受到支撑板 31的支撑, 并且部分架设于该光学膜片组的四周外边缘之上。
在该实施例中, 由于采用定位装置, 将光学模片组中的各光学模片的折 叠部收纳进定位装置与导光板侧板之间的空间, 可以筒化背光模组光学模片
的定位; 同时, 在保证光学模片组固定的同时, 预留了一定的余量空间, 在 光学模片受热膨胀或受冷收缩时, 其均可以固定于定位装置与导光板之间形 成的空间里, 从而防止了光学模片由于热膨胀或冷收缩带来的波浪形变形; 另外, 该定位装置可以在各种机型的液晶显示模块中共用, 应用广泛。
请结合图 6至图 8所示, 示出了根据本发明另一实施例的背光模组。 同 时, 图 9示出了采用图 7背光模组的液晶显示模块中的截面示意图。
在该实施例中, 定位装置 16与图 2中的定位装置 15稍有不同, 该定位 装置 16包括:
两个固定部 160,分别设置于该定位装置 16的两端,该两个固定部处于 同一水平面, 用于贴合在该导光板 13的侧面 130;
桥形部 161 ,设置在该两个固定部 160之间, 由该固定部 160延伸而成, 其中,该桥形部 161与该两个固定部 160所处的水平面之间可形成空纳空间; 两个贴合部 162, 分别从该定位装置 160的两个固定部 160的两侧以垂 直于该固定部 160的方向向外延伸出而形成, 用于分别贴合该导光板 13的 顶面及底面。
该固定部 160与两个贴合部 162形成截面大致为" ["形结构,刚好可以卡 住导光板的侧端。 使用该形状, 可以使定位装置 160与导光板 13结合的更 加紧密和牢固。
在该实施例中, 该定位装置 15的两个固定部 150、 与该导光板 13的侧 面 130通过粘合的方式固定,例如可以采用诸如胶带或胶水等进行粘;同样, 该贴合部 162与该导光板 13的顶面及底面可以通过粘合的方式固定。 在该 定位装置 15与导光板 13的侧面 130及顶面和底面固定后,则该定位装置 16 的桥形部 161的内侧与该导光板 13的侧面 130形成有容置空间 164, 此时, 可将该各光学膜片的该可折叠部 110、 110、 120经折叠后容纳于该容置空间 164内。
可以理解的是, 在其他的实施例中, 在该定位装置 16 中也可以仅设置 一个贴合部 162。
本实施例中其他各部件的结构及原理与前述对图 2至图 5中描述的实施 例中相应的部件的结构和原理相同, 在此不进行详述。
相应地, 根据本发明的实施例, 提供了一种采用上述实施例中背光模组 的薄膜晶体管液晶显示器(TFT-LCD )。
综上该, 实施本发明实施例所提供的背光模组及其液晶显示器, 具有如 下的有益效果:
根据本发明的实施例, 通过采用定位装置, 将光学模片组中的各光学模 片的折叠部收纳进定位装置与导光板侧板之间的空间, 即可以实现光学模片 组的固定定位, 非常筒单;
同时, 在保证光学模片组固定的同时, 预留了一定的余量空间, 在光学 模片受热膨胀或受冷收缩时, 其均可以固定于定位装置与导光板之间形成的 空间里, 从而防止了光学模片由于热膨胀或冷收缩带来的波浪形变形; 另外, 该定位装置可以同时应用于各种机型的液晶显示模块中, 无需针 对每种机型分别进行开模, 应用广泛, 且节省了生产成本。
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, 其中, 包括:
导光板, 设有入光面和出光面, 所述入光面侧设有光源;
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, 所述 光学膜片组中的至少一个光学膜片的至少一个侧边延伸有可折叠部;
至少一个定位装置,设置在所述导光板的除入光面之外的至少一个侧面 上, 所述定位装置与所述导光板的侧面形成有容置空间, 所述光学膜片的所 述可折叠部经折叠后容纳于所述容置空间内。
2、 如权利要求 1所述的一种背光模组, 其中, 所述定位装置为大致为 条形, 包括:
两个固定部, 分别设置于所述定位装置的两端, 所述两个固定部处于同 一水平面, 用于贴合在所述导光板的侧面上;
桥形部, 设置在所述两个固定部之间, 所述桥形部与所述两个固定部所 处的水平面之间形成有空纳空间。
3、 如权利要求 2所述的一种背光模组, 其中, 所述定位装置的两个固 定部与所述导光板的侧面通过粘合的方式固定。
4、 如权利要求 3所述的一种背光模组, 其中, 所述光学膜片组包括从 上至下设置的第一扩散板、棱镜板、 第二扩散板, 所述第一扩散板、棱镜板、 第二扩散板至少在同一侧面延伸有可折叠部, 所述可折叠部可经折叠与各光 学膜片垂直, 所述可折叠部容纳于所述定位装置与所述导光板的侧面形成的 容置空间中。
5、 如权利要求 4所述的一种背光模组, 其中, 在所述导光板底面进一 步设置有反光板。
6、 如权利要求 5所述的一种背光模组, 其中, 所述导光板和光源通过 背板进行固定。
7、 一种背光模组, 其中, 包括:
导光板, 设有入光面和出光面, 所述入光面侧设有光源;
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, 所述 光学膜片组中的至少一个光学膜片的至少一个侧边延伸有可折叠部;
至少一个定位装置, 所述定位装置为大致为条形, 包括:
两个固定部, 分别设置于所述定位装置的两端, 所述两个固定部处于同 一水平面, 用于贴合在所述导光板的侧面上;
桥形部, 设置在所述两个固定部之间, 所述桥形部与所述两个固定部所 处的水平面之间形成有空纳空间;
其中, 所述光学膜片的所述可折叠部经折叠后容纳于所述容置空间内。
8、 如权利要求 7所述的一种背光模组, 其中, 所述定位装置进一步包 括:
至少一个贴合部,从所述定位装置的两个固定部的至少一侧以垂直于所 述固定部的方向向外延伸出而形成, 用于贴合所述导光板的顶面或底面。
9、 如权利要求 8所述的一种背光模组, 其中, 所述定位装置的两个固 定部与所述导光板的侧面通过粘合的方式固定; 所述定位装置的贴合部与所 述导光板的顶面或底面通过粘合的方式固定。
10、 如权利要求 9所述的一种背光模组, 其中, 所述光学膜片组包括从 上至下设置的第一扩散板、棱镜板、 第二扩散板, 所述第一扩散板、棱镜板、 第二扩散板至少在同一侧面延伸有可折叠部, 所述可折叠部可经折叠与各光 学膜片垂直,所述可折叠部容纳于所述定位装置与所述导光板的侧面形成的 容置空间中。
11、 如权利要求 10所述的一种背光模组, 其中, 在所述导光板底面进 一步设置有反光板。
12、 如权利要求 11 所述的一种背光模组, 其中, 所述导光板和光源通 过背板进行固定。
13、一种液晶显示器, 其中, 至少包括一背光模组, 所述背光模组包括: 导光板, 设有入光面和出光面, 所述入光面侧设有光源;
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, 所述 光学膜片组中的至少一个光学膜片的至少一个侧边延伸有可折叠部;
至少一个定位装置,设置在所述导光板的除入光面之外的至少一个侧面 上, 所述定位装置与所述导光板的侧面形成有容置空间, 所述光学膜片的所 述可折叠部经折叠后容纳于所述容置空间内。
14、 如权利要求 13所述的一种液晶显示器, 其中, 所述定位装置为大 致为条形, 包括:
两个固定部, 分别设置于所述定位装置的两端, 所述两个固定部处于同 一水平面, 用于贴合在所述导光板的侧面上;
桥形部, 设置在所述两个固定部之间, 所述桥形部与所述两个固定部所 处的水平面之间形成有空纳空间。
15、 如权利要求 14所述的一种液晶显示器, 其中, 所述定位装置进一 步包括:
至少一个贴合部,从所述定位装置的两个固定部的至少一侧以垂直于所 述固定部的方向向外延伸出而形成, 用于贴合所述导光板的顶面或底面。
16、 如权利要求 15所述的一种液晶显示器, 其中, 所述定位装置的贴 合部与所述导光板的顶面或底面通过粘合的方式固定, 所述定位装置的两个 固定部与所述导光板的侧面通过粘合的方式固定。
17、 如权利要求 16所述的一种液晶显示器, 其中, 所述光学膜片组包 括从上至下设置的第一扩散板、 棱镜板、 第二扩散板, 所述第一扩散板、 棱 镜板、 第二扩散板至少在同一侧面延伸有可折叠部, 所述可折叠部可经折叠 与各光学膜片垂直, 所述可折叠部容纳于所述定位装置与所述导光板的侧面 形成的容置空间中。
18、 如权利要求 17所述的一种液晶显示器, 其中, 在所述导光板底面 进一步设置有反光板。
19、 如权利要求 18所述的一种液晶显示器, 其中, 所述导光板和光源 通过背板进行固定。
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| CN111487809A (zh) * | 2019-01-25 | 2020-08-04 | 南京瀚宇彩欣科技有限责任公司 | 光学堆叠结构与显示装置 |
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| CN115308946A (zh) * | 2022-08-09 | 2022-11-08 | Tcl华星光电技术有限公司 | 背光模组和显示装置 |
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