WO2015013945A1 - 双面显示器 - Google Patents

双面显示器 Download PDF

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Publication number
WO2015013945A1
WO2015013945A1 PCT/CN2013/080603 CN2013080603W WO2015013945A1 WO 2015013945 A1 WO2015013945 A1 WO 2015013945A1 CN 2013080603 W CN2013080603 W CN 2013080603W WO 2015013945 A1 WO2015013945 A1 WO 2015013945A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
double
diffusion plate
light source
display according
Prior art date
Application number
PCT/CN2013/080603
Other languages
English (en)
French (fr)
Inventor
宁超
Original Assignee
深圳市华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/006,679 priority Critical patent/US20150036319A1/en
Publication of WO2015013945A1 publication Critical patent/WO2015013945A1/zh

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133608Direct backlight including particular frames or supporting means
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133342Constructional arrangements; Manufacturing methods for double-sided displays

Definitions

  • the present invention relates to the field of liquid crystal display technology, and more particularly to a structural improvement of a double-sided display liquid crystal display.
  • BACKGROUND OF THE INVENTION Existing backlights of liquid crystal modules are mainly divided into direct type and side-in type, but no matter which kind of backlight is used, it is generally designed to be single-sided light, that is, only one piece of liquid crystal glass can be used to display one picture. With the development of society, in places such as government office work, hospital charges, supermarket cash registers, etc., it is necessary for the operator to see the screen display at the same time. In this case, a double-sided display is required.
  • Another example is Internet cafes, corporate offices, etc., where two people sit face to face, each with a display in front of them, which can be combined into a double-sided display, so that they share a backlight module, and then controlled separately by the circuit. These two panels make them display the same or different pictures. It can effectively reduce costs, reduce energy consumption, and reduce the space occupied.
  • the two display panels In the assembled structure of the double-sided display, the two display panels often share one illumination source, and then components are sequentially added from the inside to the outside on both sides of the illumination source. In this way, the light source and the component are more dependent on the fixed structure of the outer frame.
  • the present invention provides a double-sided display including two first display panels and a second display panel disposed in parallel, and a backlight disposed between the first display panel and the second display panel
  • the backlight module includes: a light source disposed in parallel between the first display panel and the second display panel; and respectively disposed in parallel between the light source and the first display panel and the second display panel a first diffusion plate and a second diffusion plate; wherein the first diffusion plate and the first display panel, the second diffusion plate and the second display panel are respectively provided with a first optical film and a second optical film, wherein
  • the light source includes a printed circuit board and an LED lamp mounted on the printed circuit board, the printed circuit board including a first side facing the first diffusing plate and a second side facing the second diffusing plate The first side surface and the second side
  • the support member comprises a base and a body vertically protruding from the base.
  • the support member is bolted or bonded to the printed circuit board through the base.
  • the body has a conical shape.
  • the LED lights respectively located on the first side and the second side are disposed “back to back”.
  • the support members respectively located on the first side and the second side are disposed "back to back”.
  • the LED lamp on the first side or the second side and the support on the second side or the first side are disposed "back to back”.
  • a secondary lens is disposed between the light source and the first diffusion plate and the second diffusion plate to diffuse the light source optical path.
  • the printed circuit board includes: a first circuit board disposed facing the first diffusion plate and a second circuit board disposed facing the second diffusion plate;
  • the LED lights on the circuit board and the second circuit board are independently controlled.
  • the material of the support member is transparent or white plastic.
  • the double-sided display of the invention introduces a support member between the light source and the two diffusion plates respectively, respectively forming support for the two diffusion plates, stabilizing the distance between the light source and the two diffusion plates, preventing the double-sided display from being transported or used. During the process, the external force is pressed to deform, and the light source path is changed to cause the display effect to deteriorate.
  • FIG. 1 is a schematic structural view of a double-sided display according to Embodiment 1 of the present invention.
  • 2 is a schematic view showing the space structure of a backlight module in a double-sided display according to Embodiment 1 of the present invention.
  • Figure 3 is a partial enlarged view of A in Figure 2.
  • 4 is a schematic partial structural view of a double-sided display according to Embodiment 2 of the present invention.
  • Embodiment 1 As shown in FIG. 1, the double-sided display of the embodiment has The first display panel 11 and the second display panel 12 are disposed in parallel, and the backlight module 50 is disposed between the first display panel 11 and the second display panel 12.
  • the backlight module 50 includes: a light source 40 disposed between the first display panel 11 and the second display panel 12; and a first diffusion plate 31 respectively disposed in parallel between the light source 40 and the first display panel 11 and the second display panel 12 a second diffusion plate 32; a first optical film 21 and a second optical device respectively disposed between the first diffusion plate 31 and the first display panel 11 and between the second diffusion plate 32 and the second display panel 11 Diaphragm 22.
  • the light source 40 includes a printed circuit board 41 (also referred to as a PCB board) and LED lights 42 mounted on both sides of the printed circuit board 41.
  • the printed circuit board 41 includes a surface facing the first diffuser 31.
  • the first side surface 44 faces the second side surface 45 of the second diffusion plate 32; and the first side surface 44 and the second side surface 45 are respectively provided with a plurality of the LED lamps 42.
  • the LED lamp 42 disposed on the first side 44 and the LED lamp 42 disposed on the second side 45 are in a "back-to-back" configuration.
  • the first side surface 44 and the second side surface 45 are respectively provided with a plurality of supporting members 43 for supporting the first diffusion plate 31 or the second diffusion plate 32 to hold the light source 40 to the two diffusion plates 31.
  • the distance of /32 is stable.
  • the LED lamps 42 respectively located on the two sides 44, 45 of the printed circuit board 41 are "back to back".
  • each support member 43 includes a base 43a and a main body 43b projecting perpendicularly from the base 43a, the main body 43b being conical.
  • the pedestal 43a and the printed circuit board 41 are provided with screw holes (not shown) corresponding to each other, and sequentially pass through the pedestal 43a and the screw holes on the printed circuit board 41 through a bolt 43c (in the figure) Not shown), the base 43a is connected to the printed circuit board 41 by bolts and nuts, and the entire support member 43 is fixed to the printed circuit board 41.
  • the other support members 43 can also be fixed in this manner.
  • the support member can also be bonded to the printed circuit board in a bonded manner.
  • the support member 43 is made of a transparent or white plastic, for example: polyethylene (PE), polymethyl methacrylate Ester (PMMA), polystyrene (PS), acrylonitrile-styrene-butadiene copolymer (ABS), polycarbonate (PC), and the like.
  • PE polyethylene
  • PMMA polymethyl methacrylate Ester
  • PS polystyrene
  • ABS acrylonitrile-styrene-butadiene copolymer
  • PC polycarbonate
  • the arrangement of the support members 43 is not as good as possible, and the more the settings are, the more easily the LED lamps 42 are blocked from the light. Therefore, the number of the support members 43 is generally smaller than the number of the LED lamps.
  • a support member 43 is installed every 2 to 4 LED lamps 42 to stably support the diffusion.
  • a plate e.g., first diffuser plate 31
  • the height of the support member 43 is also determined according to a preset distance from the first diffusion plate 31 and the second diffusion plate 32 to the light source 40.
  • the first diffusion plate 31 and the second diffusion plate 32 respectively reach the light source 40.
  • the distances are equal, and thus the support members 43 provided on both sides of the printed circuit board 41 are the same in shape.
  • the present embodiment is also suitable for producing a thin and light double-sided display, that is, reducing the distance between the light source and the two diffusions (mixing distance), and obtaining a thinner double-sided display.
  • the overall height of the support member 43 can be correspondingly reduced to match the distance between the reduced light source 40 and the two diffusion plates 31/32, and the first diffusion plate 31 or the second diffusion plate 32 can be stably supported.
  • a secondary lens (not shown) is attached to the surface of the LED lamp 42 for diffusing the optical path.
  • the difference between this embodiment and the embodiment 1 is that the two display screens of the double-sided display can be independently controlled.
  • the printed circuit board 41 of the embodiment can be assembled by two circuit boards. As shown in FIG. 4, the printed circuit board 41 includes: a first circuit board 41a disposed facing the first diffusion plate 31 and a second circuit board 41b disposed facing the second diffusion plate 32, respectively.
  • the first circuit board 41a and the second circuit board 41b are "back-to-back" connections, but the two have independent circuits, and the LED lights 42 can be independently controlled without interfering with each other, and the pair is respectively mounted on the first circuit board 41a,
  • the LED lamps 42 on the two circuit boards 41b are independently controlled.
  • the support members 43 can also be fixed on the first circuit board 41a and the second circuit board 41b, respectively.
  • any one of the two displays can be operated or hibernated, and the display on both sides does not interfere with each other, and at the same time, the power consumption of the light source required for the operation of the display can be saved.
  • the first embodiment please refer to the first embodiment.
  • Embodiment 3 As shown in FIG. 5, the present embodiment and the embodiment 1 are not fixed in the LED module 42 of the backlight module 50, The arrangement of the supports 43.
  • the light source 40 of the present embodiment includes an LED lamp 42 and a printed circuit board 41 connected to each other, wherein the LED lamp 42 on the first side 44 of the printed circuit board 41 and the support member 43 on the second side 45 are "back to back". In configuration, or alternatively, the LED lamp 42 on the second side 45 of the printed circuit board 41 and the support member 43 on the first side 44 are in a "back-to-back" configuration. This design allows the LED lamp 42 on the side of the printed circuit board 41 to emit light more uniformly.
  • the rest of the structure or installation parameters are shown in Example 1.
  • the above-described embodiments are merely illustrative of the technical concept and the features of the present invention.
  • the purpose of the present invention is to understand the present invention and to implement the present invention without any limitation. Any technical solution formed by equivalent transformation or equivalent replacement should fall within the scope of protection of the claims of the present invention.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

一种双面显示器,包括背光模组(50),所述背光模组(50)包括:平行设置于第一显示面板(11)、第二显示面板(12)之间的光源(40);以及分别平行设置于光源(40)与第一显示面板(11)、第二显示面板(12)之间的第一扩散板(31)、第二扩散板(32);光源(40)包括印刷电路板(41)以及装设在印刷电路板(41)上的LED灯(42),印刷电路板(41)包括面向第一扩散板(31)的第一侧面(44)、面向第二扩散板(32)的第二侧面(45);第一侧面(44)、第二侧面(45)分别布设有若干个LED灯(42);第一侧面(44)、第二侧面(45)还分别布设有若干个支撑件(43),用于支撑第一扩散板(31)或第二扩散板(32),以保持光源(40)分别到第一扩散板(31)、第二扩散板(32)的距离。稳定了光源(40)到两扩散板(31、32)之间的距离,防止双面显示器发生形变而导致显示效果变差的问题。

Description

双面显示器 术领域 本发明涉及液晶显示器技术领域, 尤其是对一种双面显示液晶显示器的结 构改进。 背景技术 现有的液晶模组背光源主要分为直下式和侧入式, 但不管是哪种背光源, 一般都设计为单面出光, 即只能搭配一块液晶玻璃显示一幅画面。 随着社会的发展, 在诸如政府对外办公, 医院收费, 超市收银等地方需要 使操作人员同时看到屏幕的显示画面, 此时需要一台双面显示的显示器。 又如 网吧, 企业办公等地方, 一般是两人面对面坐着, 各自面前有一台显示器, 可 以将这两台显示器融合为一台双面显示器, 使它们共用一个背光模组, 再通过 电路分别控制这两块面板使其显示相同或者不同的画面。 可以有效地降低成本, 减少能耗, 减少占用的空间。 而双面显示器的组装结构中, 往往两显示板面共用一个发光源, 然后在发 光源的两侧从内至外依次增设元器件。 这样, 光源及元器件更依赖于外框的固 定结构, 若外框的固定结构不稳定或受到外力压迫影响, 容易使得双面显示器 内部结构发生位移或形变, 影响双面显示器的质量和性能。 发明内容 为解决上述问题, 本发明提供一种双面显示器, 其包括两平行设置的第一 显示面板和第二显示面板, 以及设置于所述第一显示面板和第二显示面板之间 的背光模组, 所述背光模组包括: 平行设置于所述第一显示面板、 第二显示面 板之间的光源; 以及分别平行设置于所述光源与第一显示面板、 第二显示板之 间的第一扩散板、 第二扩散板; 所述第一扩散板和第一显示面板、 第二扩散板 和第二显示面板之间还分别设有第一光学膜片、 第二光学膜片, 其中, 所述光源包括印刷电路板以及装设在该印刷电路板上的 LED灯, 所述印刷 电路板包括面向所述第一扩散板的第一侧面、 面向所述第二扩散板的第二侧面; 所述第一侧面、 第二侧面分别布设有若干个所述 LED灯; 所述第一侧面、 第二侧面还分别布设有若干个支撑件, 用于支撑所述第一 扩散板或第二扩散板, 以保持所述光源分别到第一扩散板、 第二扩散板的距离。 其中, 所述支撑件包括基座以及垂直凸伸于所述基座上的主体。 其中, 所述支撑件通过所述基座与所述印刷电路板螺栓连接或粘接。 其中, 所述主体呈圆锥形。 其中, 分别位于所述第一侧面、 第二侧面的 LED灯是 "背对背 "设置的。 其中, 分别位于所述第一侧面、 第二侧面的支撑件是 "背对背"设置的。 其中, 位于所述第一侧面或第二侧面的 LED灯与位于第二侧面或第一侧面 的支撑件是 "背对背"设置的。 其中, 在所述光源与所述第一扩散板、 第二扩散板之间分别设置二次透镜, 用于扩散光源光路。 其中, 所述印刷电路板包括: 分别面向所述第一扩散板设置的第一电路板 和面向所述第二扩散板设置的第二电路板; 用于实现对分别装设于所述第一电 路板、 第二电路板上的 LED灯独立控制。 其中, 所述支撑件的材质是透明或呈现白色的塑料。 本发明的双面显示器, 在光源与两扩散板之间分别引入了支撑件, 分别形 成对两扩散板的支撑, 稳定了光源到两扩散板之间的距离, 防止双面显示器在 运输或使用过程中受到外力施压发生形变, 改变光源光路而导致显示效果变差 的问题。 并且, 印刷电路板可 "一分为二", 使得设置在两个具有独立电路电路 板上的 LED灯可分别独立控制, 即实现双面显示器可随意控制任意一侧的显示 屏工作或休眠状态, 实用性高且节约资源。 附图说明 图 1为本发明实施例 1双面显示器的结构示意图。 图 2为本发明实施例 1双面显示器中背光模组的空间结构示意图。 图 3为图 2中 A处的局部放大图。 图 4为本发明实施例 2双面显示器的局部结构示意图。 图 5为本发明实施例 3双面显示器的结构示意图。 为使本发明的上述目的、 特征和优点能更明显易理解, 下面特结合本发明 具体实施例, 详细说明如下: 实施例 1 如图 1所示, 本实施例的这种双面显示器, 其包括两平行设置的第一显示 面板 11和第二显示面板 12, 以及设置于所述第一显示面板 11和第二显示面板 12之间的背光模组 50, 所述背光模组 50包括: 平行设置于所述第一显示面板 11、 第二显示面板 12之间的光源 40; 以及分别平行设置于所述光源 40与第一 显示面板 11、 第二显示板 12之间的第一扩散板 31、 第二扩散板 32; 所述第一 扩散板 31和第一显示面板 11之间、 第二扩散板 32和第二显示面板 11之间还 分别设有第一光学膜片 21、 第二光学膜片 22。 其中, 所述光源 40包括印刷电路板 41 (又简称为 PCB板) 以及装设在该 印刷电路板 41两侧的 LED灯 42,所述印刷电路板 41包括面向所述第一扩散板 31的第一侧面 44、 面向第二扩散板 32的第二侧面 45; 所述第一侧面 44、 第二 侧面 45分别布设有若干个所述 LED灯 42。 在本实施例中, 为了方便在印刷电 路板 41上的走线, 设置在第一侧面 44上的 LED灯 42与设置在第二侧面 45上 的 LED灯 42呈 "背对背"构型。 所述第一侧面 44、 第二侧面 45上还分别布设有若干个支撑件 43, 用于支 撑所述第一扩散板 31或第二扩散板 32, 以保持所述光源 40到两扩散板 31/32 的距离稳定。 在本实施例中, 分别位于印刷电路板 41两侧面 44、 45的 LED 灯 42是 "背对背"装设的, 为了避开 LED灯 42的位置, 分别位于印刷电路板 41两侧面 44、 45的支撑件 43也实施 "背对背"装设的方式。 这种背光模组 50 的空间构型可结合图 2所示。 结合图 3所示的局部放大图, 每个支撑件 43包括基座 43a以及垂直凸伸于 所述基座 43a上的主体 43b, 所述主体 43b呈圆锥形。 其中, 所述基座 43a和印 刷电路板 41上设有相互对应的螺孔 (图中未示出), 通过一螺栓 43c依次穿过 基座 43a、 印刷电路板 41上的螺孔(图中未示出), 实现基座 43a与所述印刷电 路板 41螺栓、 螺母连接, 将整个支撑件 43固定于所述印刷电路板 41上。 同样 地, 其他支撑件 43也可以按照这种方式进行固定。 在其他实施例中, 支撑件还 可以采用粘接的方式与印刷电路板连接。 进一步地, 为了避免支撑件 43吸收 LED灯 42的发射光, 影响透光率, 支 撑件 43是采用透明或呈现白色的塑料制成的, 例如为: 聚乙烯 (PE)、 聚甲基 丙烯酸甲酯 (PMMA)、 聚苯乙烯 (PS )、 丙烯腈-苯乙烯-丁二烯共聚物 (ABS )、 聚碳酸酯 (PC) 等。
支撑件 43的设置并不是越多越好, 设置越多容易遮挡 LED灯 42出射光。 因此一般支撑件 43的数量少于 LED灯的数目, 在印刷电路板 41的一侧面 (例 如第一侧面 44), 每隔 2~4个 LED灯 42安装一个支撑件 43, 即可稳定支撑扩 散板 (例如第一扩散板 31 ), 使扩散板与光源之间保持一稳定距离。
相应地, 支撑件 43的高度也根据第一扩散板 31、 第二扩散板 32分别到光 源 40的预设距离来确定,一般第一扩散板 31, 第二扩散板 32分别到光源 40的 两者距离是相等的, 因此设置在印刷电路板 41两侧的支撑件 43形状大小相同。 进一步地, 本实施例也适用于制作轻薄型的双面显示器, 即缩减光源与两 扩散之间的距离 (混光距离), 获得体积更薄的双面显示。 一方面, 可相应地减 少支撑件 43的整体高度使之与缩减后的光源 40与两扩散板 31/32距离相适应, 能稳定支撑第一扩散板 31或第二扩散板 32。但是, 为了让 LED灯 42的发射光 线能在较短的距离内被打散, 在 LED灯 42表面加装二次透镜 (图中未示出), 用于扩散光路。 实施例 2
本实施例与实施例 1所不同是为了实现双面显示器两显示屏可独立控制, 本实施例的印刷电路板 41可以是由两块电路板的组装。 如图 4所示, 所述印刷 电路板 41包括: 分别面向所述第一扩散板 31设置的第一电路板 41a和面向所 述第二扩散板 32设置的第二电路板 41b。 第一电路板 41a、 第二电路板 41b是 "背对背"连接, 但两者具有独立电路, 可独立控制 LED灯 42而互不干扰, 实现对分别装设于所述第一电路板 41a、第二电路板 41b上的 LED灯 42进行独 立控制。 相应地, 支撑件 43也可分别在第一电路板 41a、 第二电路板 41b上固 定。 这样, 通过控制双面显示器的外电路, 可以使双面显示任意一显示屏工作 或休眠, 两侧显示屏不会相互干扰, 同时, 又可节省一显示屏工作所需的光源 用电。 其余结构请参照实施例 1所示。 实施例 3 如图 5所示, 本实施例与实施例 1 所不固在于背光模组 50中 LED灯 42、 支撑件 43的排列方式。 本实施例的光源 40包括相互连接的 LED灯 42和印刷 电路板 41, 其中, 位于所述印刷电路板 41第一侧面 44的 LED灯 42与位于第 二侧面 45的支撑件 43呈 "背对背"构型, 或者, 位于所述印刷电路板 41第二 侧面 45的 LED灯 42与位于第一侧面 44的支撑件 43呈 "背对背"构型。 这种 设计可使得在印刷电路板 41一侧的 LED灯 42出光更均匀。 其余结构或安装参数参见实施例 1所示。 上述实施方法只为说明本发明的技术构思及特点, 其目的在于让熟悉此项 技术的认识能够了解本发明的内容并据以实施, 对本发明的保护范围不构成任 何限制。 凡采用等同变换或者等效替换而形成的技术方案, 均应落在本发明权 利要求所保护的范围内。

Claims

权 利 要 求 书
1、 一种双面显示器, 其包括两平行设置的第一显示面板和第二显示面板, 以及设置于所述第一显示面板和第二显示面板之间的背光模组, 所述背光模组 包括: 平行设置于所述第一显示面板、 第二显示面板之间的光源; 以及分别平 行设置于所述光源与第一显示面板、 第二显示板之间的第一扩散板、 第二扩散 板; 所述第一扩散板和第一显示面板之间、 第二扩散板和第二显示面板之间还 分别设有第一光学膜片、 第二光学膜片, 其中, 所述光源包括印刷电路板以及装设在该印刷电路板上的 LED灯, 所述印刷 电路板包括面向所述第一扩散板的第一侧面、 面向所述第二扩散板的第二侧面; 所述第一侧面、 第二侧面分别布设有若干个所述 LED灯; 所述第一侧面、 第二侧面还分别布设有若干个支撑件, 用于支撑所述第一 扩散板或第二扩散板, 以保持所述光源分别到第一扩散板、 第二扩散板的距离。
2、 根据权利要求 1所述双面显示器, 其中, 所述支撑件包括基座以及垂直 凸伸于所述基座上的主体。
3、 根据权利要求 2所述双面显示器, 其中, 所述支撑件通过所述基座与所 述印刷电路板螺栓连接或粘接。
4、 根据权利要求 2所述双面显示器, 其中, 所述主体呈圆锥形。
5、 根据权利要求 1所述双面显示器, 其中, 分别位于所述第一侧面、 第二 侧面的 LED灯是背对背设置的。
6、 根据权利要求 2所述双面显示器, 其中, 分别位于所述第一侧面、 第二 侧面的 LED灯是背对背设置的。
7、 根据权利要求 1所述双面显示器, 其中, 分别位于所述第一侧面、 第二 侧面的支撑件是背对背设置的。
8、 根据权利要求 2所述双面显示器, 其中, 分别位于所述第一侧面、 第二 侧面的支撑件是背对背设置的。
9、 根据权利要求 1所述双面显示器, 其中, 位于所述第一侧面或第二侧面 的 LED灯与位于第二侧面或第一侧面的支撑件是背对背设置的。
10、 根据权利要求 2所述双面显示器, 其中, 位于所述第一侧面或第二侧 面的 LED灯与位于第二侧面或第一!!11^^^" 件是背对背设置的。
11、 根据权利要求 1所述双面显示器, 其中, 在所述光源与所述第一扩散 板、 第二扩散板之间分别设置二次透镜, 用于扩散光源光路。
12、 根据权利要求 2所述双面显示器, 其中, 在所述光源与所述第一扩散 板、 第二扩散板之间分别设置二次透镜, 用于扩散光源光路。
13、 根据权利要求 1所述双面显示器, 其中, 所述印刷电路板包括: 分别 面向所述第一扩散板设置的第一电路板和面向所述第二扩散板设置的第二电路 板;用于实现对分别装设于所述第一电路板、第二电路板上的 LED灯独立控制。
14、 根据权利要求 2所述双面显示器, 其中, 所述印刷电路板包括: 分别 面向所述第一扩散板设置的第一电路板和面向所述第二扩散板设置的第二电路 板;用于实现对分别装设于所述第一电路板、第二电路板上的 LED灯独立控制。
15、 根据权利要求 1所述双面显示器, 其中, 所述支撑件的材质是透明或 呈现白色的塑料。
16、 根据权利要求 2所述双面显示器, 其中, 所述支撑件的材质是透明或 呈现白色的塑料。
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