WO2017008326A1 - 双面显示器 - Google Patents

双面显示器 Download PDF

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Publication number
WO2017008326A1
WO2017008326A1 PCT/CN2015/084928 CN2015084928W WO2017008326A1 WO 2017008326 A1 WO2017008326 A1 WO 2017008326A1 CN 2015084928 W CN2015084928 W CN 2015084928W WO 2017008326 A1 WO2017008326 A1 WO 2017008326A1
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WO
WIPO (PCT)
Prior art keywords
layer
double
halftone
reflecting layer
sided display
Prior art date
Application number
PCT/CN2015/084928
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English (en)
French (fr)
Inventor
樊勇
Original Assignee
深圳市华星光电技术有限公司
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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 US14/771,260 priority Critical patent/US10409109B2/en
Publication of WO2017008326A1 publication Critical patent/WO2017008326A1/zh

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    • 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
    • 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
    • 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
    • G02B6/0063—Means for improving the coupling-out of light from the light guide for extracting light out both the major surfaces of the light guide
    • 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
    • G02F1/133553—Reflecting elements
    • 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
    • G02F1/133342—Constructional arrangements; Manufacturing methods for double-sided displays

Definitions

  • the invention belongs to the technical field of liquid crystal displays, and in particular to a double-sided display.
  • TFT-LCD display since the TFT-LCD panel itself does not emit light, it is necessary to use an external light source for display.
  • a light source has a backlight source and a reflective light source; Backlit light sources are not affected by environmental changes, so the light sources in current TFT-LCD displays are almost all backlit light sources.
  • the type of light source has undergone a development process from a cold cathode fluorescent lamp (CCFL) to a light emitting diode (LED). LED has become the mainstream of backlights due to its small size, fast response time, long life, non-breaking, high color gamut and many types of packages.
  • CCFL cold cathode fluorescent lamp
  • LED light emitting diode
  • the LED backlight it can be basically divided into a side-in LED backlight and a direct-lit LED backlight.
  • the side-entry backlight has the advantages of low power consumption and thin thickness, but it requires a light guide plate, so the weight is large and the cost is high; while the direct type backlight has a low number of light sources and no light guide plate, so the cost is low, but the light box Higher, so the look looks thicker.
  • the direct-lit backlight box has a high height; while the side-in type generally requires two light guide plates, which also causes the double-sided display to be cumbersome.
  • the present invention provides a double-sided display which uses a side-in type backlight to make the double-sided display thinner; at the same time, avoids the use of the light guide plate, and also ensures the double-sided display It weighs less.
  • a double-sided display includes a first display panel and a second display panel disposed in parallel, and a backlight module disposed between the first display panel and the second display panel; the backlight module includes a first display panel, a first optical film and a second optical film inside the second display panel, and a light guiding layer disposed between the first optical film and the second optical film;
  • the light guiding layer includes: a first dot reflecting layer and a second dot reflecting layer respectively disposed inside the first optical film and the second optical film; wherein the first dot reflecting layer and the second dot reflecting layer Corresponding to the surface; and at least one reflector and a light source disposed inside the reflector, the reflector being disposed between the first halftone reflective layer and the second halftone reflective layer, located at the light guiding layer One end; the first halftone reflecting layer and the second halftone reflecting layer are enclosed by the reflector to form a light guiding cavity.
  • the light guiding layer further includes at least one supporting column disposed between the first dot reflecting layer and the second dot reflecting layer for ensuring that the first dot reflecting layer and the second dot reflecting layer are parallel Settings.
  • a distance between the first halftone reflecting layer and the second halftone reflecting layer is 10 mm to 40 mm.
  • first halftone reflecting layer and/or the second halftone reflecting layer respectively comprise a transparent base layer and a reflective layer disposed on the transparent base layer; the two reflective layers are corresponding; The exiting light exits the transparent substrate or is reflected at the surface of the reflective layer.
  • the material of the transparent base layer is selected from any one of polymethyl methacrylate, silicone modified polyether glue, polystyrene, glass, polycarbonate, and polyethylene terephthalate.
  • the material of the reflective layer is selected from any one of calcium carbonate, barium sulfate, magnesium oxide, silver, aluminum, and polytetrafluorosuspending resin.
  • first halftone reflecting layer and/or the second halftone reflecting layer are each a non-transparent substrate provided with a through hole, so that the emitted light of the light source is emitted from the through hole, or Reflected on the surface of the non-transparent substrate.
  • the through hole has a pore diameter of less than 1 mm.
  • the reflector is a reflector or a reflector.
  • the cross section of the reflector is a parabola whose opening faces the inside of the light guiding cavity.
  • the light source is an LED light source.
  • the invention realizes the purpose of double-sided display by using the side-entry backlight and the arrangement of the light guiding layer at the same time, and the light is guided by the air; compared with the direct-type backlight of the double-sided display in the prior art, according to the invention
  • the double-sided display is thinner; at the same time, the use of a side-lit backlight while avoiding the use of a light guide plate reduces the weight of the double-sided display.
  • FIG. 1 is a cross-sectional structural view of a double-sided display according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing a light guiding layer according to Embodiment 2 of the present invention.
  • FIG. 1 is a schematic cross-sectional structural view of a double-sided display according to Embodiment 1 of the present invention.
  • a double-sided display according to Embodiment 1 of the present invention includes: a first display panel 1, a second display panel 2, and a first display panel 1 and a first The backlight module 3 between the display panels 2; wherein the first display panel 1 and the second display panel 2 are disposed in parallel.
  • the backlight module 3 includes two first optical films 31 and a second optical film 32 disposed in parallel, and the first optical film 31 and the second optical film 32 are respectively disposed on the first display panel 1 and The inner side of the second display panel 2; the backlight module 3 further includes a light guiding layer 33 disposed between the first optical film 31 and the second optical film 32.
  • the light guiding layer 33 includes two first dot reflecting layers 331 and a second dot reflecting layer 332 disposed in parallel, and the first dot reflecting layer 331 and the second dot reflecting layer 332 are respectively disposed on the first optical film.
  • the first halftone reflecting layer 331, the second halftone reflecting layer 332 and the two reflecting members are enclosed to form a light guiding cavity 335.
  • the reflectors may be the reflector 3331 or the reflector 3332.
  • the two reflectors located between the corresponding ends of the first dot reflection layer 331 and the second dot reflection layer 3332 are respectively a reflector 3331.
  • a reflector 3332, the reflector 3331 and the reflector 3332 are oppositely disposed, and the light source 334 is located in the reflector 3331;
  • the reflector 3331 has a parabolic cross section, and the parabola opening faces The inside of the light guiding cavity 335 is described.
  • the light source 334 is located at the bottom portion of the reflector 3331, and the light source 334 is an LED light source, but the invention is not limited thereto.
  • the arrangement of the reflector 3331 can convert the radiant LED light emitted by the light source 334 into a relatively collimated light source, thereby reducing the illuminating angle; at the same time, the arrangement of the light guiding layer 33 also avoids the general light guiding plate.
  • the light is guided by the air inside the light guiding cavity 335, thereby ensuring that the double-sided display does not have a large weight due to the use of the light guide plate while using the side-entry light source.
  • the first halftone reflecting layer 331 and the second halftone reflecting layer 332 are both made of a transparent base layer 3301 and a reflective layer 3302 dispersed on the surface thereof, and the reflective layer 3302 is disposed on the transparent base layer 3301. The surface of the inner cavity of the light chamber 335 is guided.
  • the material of the transparent base layer 3301 may be polymethyl methacrylate (PMMA for short). Any one of silicone modified polyether adhesive (MS), polystyrene (PS), glass, polycarbonate (PC), and polyethylene terephthalate (PET);
  • the material of the layer 3302 may be any one of calcium carbonate, barium sulfate, magnesium oxide, silver, aluminum, polytetrafluorosuspension resin or other high reflectivity optical functional film; in the embodiment, the first dot reflecting layer 331 And the second halftone reflective layer 332 is composed of a transparent base layer 3301 of PMMA material and a reflective layer 3302 of barium sulfate material.
  • the light guiding layer 33 further includes a first dot reflecting layer 331 and a second A plurality of support columns 336 between the dot reflection layers 332; in the present embodiment, the number of support columns 336 is three, and is evenly distributed inside the light guide cavity 335 between the reflector 3332 and the opening of the reflector 3331.
  • the distance between the first halftone reflecting layer 331 and the second halftone reflecting layer 332 is 10 mm to 40 mm.
  • the light source 334 located at the bottom of the reflector cup 3331 emits LED light, which is reflected by the reflector 3331 to reduce its illumination angle; then the dotless LED light propagates inside the light guiding cavity 335, when a part of the LED light propagates to
  • the transparent base layer 3301 is between the reflective layers 3302, it passes through the transparent base layer 3301 to the first optical film 31 and/or the second optical film 32, and passes through the first display panel 1 and/or the second.
  • the display panel 2 performs display; when another portion of the LED light propagates onto the reflective layer 3302, since the reflective layer 3302 is made of a material having high reflectivity, reflection occurs, so reciprocating until the LED light is transparent between the reflective layers 3302
  • the base layer 3301 is propagated to the first optical film 31 and/or the second optical film 32, and then displayed on the first display panel 1 and/or the second display panel 2.
  • Embodiment 2 is different from Embodiment 1 in that, as shown in FIG. 2, the first halftone reflecting layer 331 and the second halftone reflecting layer 332 are provided with a plurality of through holes 3304 on a non-transparent substrate 3303, so that the A part of the light emitted from the light source 334 is emitted from the through hole 3304, and another part of the emitted light is transmitted to the non-transparent substrate 3303 and reflected on the surface thereof, and is repeatedly reflected until it emerges from the through hole 3304, and then propagates to the first An optical film 31 and/or a second optical film 32, and in the first display Display is performed on the display panel 1 and/or the second display panel 2, so that the light emitted by the light guiding layer 33 is more uniform.
  • the through hole 3304 has a hole diameter of less than 1 mm
  • the non-transparent substrate 3303 may be a common opaque substrate such as a white plate or a galvanized plate, so that the emitted light propagating thereto is emitted on the surface thereof. Instead of coming out.
  • a double-sided display employs a side-lit light source 334 for effective thinning of the thickness of the double-sided display; at the same time, the double-sided display does not require a conventional double-sided display and side entry type
  • the light source is matched with the light guide plate, and the light guide layer 33 is prepared, and the light guide cavity 335 is formed in the light guide layer 33 to guide the light by using the air therein, thereby reducing the weight of the double-sided display.
  • the double-sided display according to the embodiment of the present invention is lighter and thinner than the double-sided display of the prior art; and during the reflection, by using the first halftone reflecting layer 331 and/or the second halftone reflecting layer 332 performs light emission or reflection to ensure that the light emitted by the light guiding layer 33 is also more uniform, so that the display effect on the first liquid crystal panel 1 and/or the second liquid crystal panel 2 also reaches the prior art.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

一种双面显示器，包括平行设置的第一显示面板（1）和第二显示面板（2），以及设置于其间的背光模组（3）；背光模组（3）包括相对的第一光学膜片（31）和第二光学膜片（32），设置于其间的导光层（33）；导光层（33）包括平行设置的第一网点反射层（331）和第二网点反射层（332），位于其间的至少一反光件（3331，3332）及位于反光件（3331，3332）内侧的光源（334）；第一网点反射层（331）、第二网点反射层（332）及反光件（3331，3332）围合形成一导光腔（335）。双面显示器采用侧入式背光，同时避免使用导光板，采用空气导光，从而保证了该双面显示器更为轻薄。

Description

双面显示器 技术领域
本发明属于液晶显示器技术领域，具体地讲，涉及一种双面显示器。
背景技术
在传统的薄膜晶体管液晶显示器(简称TFT-LCD显示器)中，由于TFT-LCD面板本身并不发光，需要借助外加光源才能进行显示，通常这样的光源有背光式光源和反射式光源两种；由于背光式光源不会受环境变化的影响，因此目前的TFT-LCD显示器中的光源几乎都为背光式光源。
在TFT-LCD光源中，光源类型经历了从冷阴极荧光灯管(简称CCFL)到发光二极管(简称LED)的发展过程。由于LED具有体积小、响应时间快、寿命长、不易碎、色域高、封装体种类多等诸多优点，目前已成为背光源的主流。
在LED背光中，目前基本可以分为侧入式LED背光和直下式LED背光。
侧入式背光具有功耗小、厚度薄等优点，但由于需要使用导光板，因此重量大、成本较高；而直下式背光由于使用光源数目少、无导光板，因此成本低，但由于灯箱较高，因此外观看起来较厚。
对于目前双面显示器而言，直下式背光灯箱高度较大；而侧入式则一般需要两片导光板，也会导致该双面显示器较为笨重。
发明内容
为解决上述现有技术存在的问题，本发明提供了一种双面显示器，该双面显示器采用侧入式背光，使得双面显示器更薄；同时避免使用导光板，也保证了该双面显示器的重量更少。
为了达到上述发明目的，本发明采用了如下的技术方案：
一种双面显示器，包括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；所述背光模组包括分别设置于所述第一显示面板、第二显示面板内侧的第一光学膜片和第二光学膜片，以及设置于所述第一光学膜片和第二光学膜片之间的导光层；所述导光层包括：分别设置于所述第一光学膜片、第二光学膜片内侧的第一网点反射层、第二网点反射层；其中，所述第一网点反射层和第二网点反射层表面相对应；以及，至少一反光件及设置于所述反光件内侧的光源，所述反光件设置于所述第一网点反射层和第二网点反射层之间、位于所述导光层的一端；所述第一网点反射层、第二网点反射层与所述反光件围合形成一导光腔。
进一步地，所述导光层还包括设置于所述第一网点反射层和第二网点反射层之间的至少一支撑柱，用于保证所述第一网点反射层和第二网点反射层平行设置。
进一步地，所述第一网点反射层和第二网点反射层之间的距离为10mm～40mm。
进一步地，所述第一网点反射层和/或第二网点反射层均包括一透明基层以及分散设置在所述透明基层上的反射层；两所述反射层相对应；用于使所述光源的出射光从所述透明基层中出射，或在所述反射层表面反射。
进一步地，所述透明基层的材料选自聚甲基丙烯酸甲酯、有机硅改性聚醚胶、聚苯乙烯、玻璃、聚碳酸酯、聚对苯二甲酸乙二醇酯中的任意一种；所述反射层的材料选自碳酸钙、硫酸钡、氧化镁、银、铝、聚四氟悬浮树脂中的任意一种。
进一步地，所述第一网点反射层和/或所述第二网点反射层均为一布设有通孔的非透光基板，以使所述光源的出射光从所述通孔中出射，或在所述非透光基板表面反射。
进一步地，所述通孔孔径小于1mm。
进一步地，所述反光件为反光杯或反光板。
进一步地，所述反光杯的剖面为开口朝向所述导光腔内部的抛物线。
进一步地，所述光源为LED光源。
本发明通过采用侧入式背光，同时结合导光层的设置，利用空气进行导光，实现了双面显示的目的；相比现有技术中的双面显示器的直下式背光，根据本发明的双面显示器更薄；与此同时，在采用侧入式背光的同时，还避免使用导光板，从而减轻了该双面显示器的重量。
附图说明
通过结合附图进行的以下描述，本发明的实施例的上述和其它方面、特点和优点将变得更加清楚，附图中：
图1是根据本发明的实施例1的双面显示器的剖面结构示意图；
图2是根据本发明的实施例2的导光层的剖面结构示意图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。在附图中，为了清楚起见，可以夸大元件的形状和尺寸，并且相同的标号将始终被用于表示相同或相似的元件。
将理解的是，尽管在这里可使用术语“第一”、“第二”等来描述各种元件，但是这些元件不应受这些术语的限制。这些术语仅用于将一个元件与另一个元件区分开来。
实施例1
图1是根据本发明的实施例1的双面显示器的剖面结构示意图。
参照图1所示，根据本发明的实施例1的双面显示器包括：第一显示面板1、第二显示面板2，以及夹设在所述第一显示面板1和第 二显示面板2之间的背光模组3；其中，第一显示面板1和第二显示面板2平行设置。
具体地，背光模组3包括两平行设置的第一光学膜片31和第二光学膜片32，所述第一光学膜片31和第二光学膜片32分别设置在第一显示面板1和第二显示面板2的内侧；背光模组3还包括设置在第一光学膜片31和第二光学膜片32之间的导光层33。
更为具体地，导光层33包括两平行设置的第一网点反射层331和第二网点反射层332，所述第一网点反射层331和第二网点反射层332分别设置于第一光学膜片31和第二光学膜片32的内侧；导光层33还包括相对设置、并位于所述第一网点反射层331与第二网点反射层332之间的至少一反光件，以及设置在反光件内侧的光源334；也就是说，所述光源334为侧入式光源。如此，第一网点反射层331、第二网点反射层332以及两个反光件即围合形成一导光腔335。其中，反光件可以是反光杯3331或反光板3332，在本实施例中，位于第一网点反射层331和第二网点反射层3332对应两端之间的两个反光件分别为一反光杯3331和一反光板3332，所述反光杯3331和反光板3332相对设置，且所述光源334即位于该反光杯3331之中；该反光杯3331具有一抛物线形状的剖面，且该抛物线的开口朝向所述导光腔335的内部。
在本实施例中，光源334位于反光杯3331的杯底部分，光源334为一LED光源，但本发明并不限制于此。
反光杯3331的设置可以将经光源334出射的朗博性的LED光转化成较准直的光源，从而减小发光角；与此同时，该导光层33的设置也避免了一般导光板的使用，而是利用导光腔335内部的空气进行导光，从而保证了该双面显示器在采用侧入式光源的同时还不会因导光板的使用导致重量较大。
在本实施例中，第一网点反射层331和第二网点反射层332均由一透明基层3301和分散于其表面的反射层3302制成，且所述反射层3302设置在该透明基层3301朝向导光腔335内部的表面上。
透明基层3301的材料可以是聚甲基丙烯酸甲酯(简称PMMA)、 有机硅改性聚醚胶(简称MS)、聚苯乙烯(简称PS)、玻璃、聚碳酸酯(简称PC)、聚对苯二甲酸乙二醇酯(简称PET)中的任意一种；反射层3302的材料可以是碳酸钙、硫酸钡、氧化镁、银、铝、聚四氟悬浮树脂或其他高反射率光学功能薄膜中的任意一种；在本实施例中，第一网点反射层331和第二网点反射层332均由PMMA材料的透明基层3301和硫酸钡材料的反射层3302组成。
进一步地，为了保证导光层33的尺寸，也就是第一网点反射层331和第二网点反射层332之间的平行距离，导光层33还包括设置在第一网点反射层331和第二网点反射层332之间的若干支撑柱336；在本实施例中，支撑柱336的数量为三个，且均匀分布在反光片3332和反光杯3331开口之间的导光腔335的内部。一般地，第一网点反射层331和第二网点反射层332之间的距离为10mm～40mm。
下面对上述双面显示器的工作原理进行描述。
首先位于反光杯3331杯底处的光源334发出LED光，经反光杯3331的反射，减小了其发光角；然后该无网点的LED光在导光腔335内部传播，当一部分LED光传播至反射层3302之间的透明基层3301上时，其透过该透明基层3301传至第一光学膜片31和/或第二光学膜片32处，并经第一显示面板1和/或第二显示面板2进行显示；当另一部分LED光传播至反射层3302上时，由于反射层3302由高反射率的材料制成，因此发生反射，如此往复直至该LED光由反射层3302之间的透明基层3301传播至第一光学膜片31和/或第二光学膜片32处，并继而在第一显示面板1和/或第二显示面板2上进行显示。
实施例2
在实施例2的描述中，与实施例1的相同之处在此不再赘述，只描述与实施例1的不同之处。实施例2与实施例1的不同之处在于，参照图2所示，第一网点反射层331和第二网点反射层332是在一非透明基板3303上布设若干通孔3304，以使所述光源334的一部分出射光从所述通孔3304中出射，而另一部分出射光传播至所述非透光基板3303并在其表面发生反射，反复反射直至从通孔3304中出射，继而传播至第一光学膜片31和/或第二光学膜片32处，并在第一显 示面板1和/或第二显示面板2上进行显示，如此，可保证由导光层33出射的光更为均匀。一般地，所述通孔3304的孔径小于1mm，而所述非透光基板3303可以是白板、镀锌板等常见的不透光的基板，以使传播至其的出射光在其表面发生发射，而不是出射。
根据本发明的实施例的双面显示器采用侧入式的光源334，可对该双面显示器的厚度进行有效的减薄；与此同时，该双面显示器无需传统双面显示器中与侧入式光源相搭配的导光板，而是通过制备导光层33，并在导光层33内形成了导光腔335，以利用其中的空气进行导光，从而对该双面显示器的重量进行了减轻；因此说，根据本发明的实施例的双面显示器相比现有技术中的双面显示器，更为轻薄；且反射过程中，通过采用第一网点反射层331和/或第二网点反射层332进行光的出射或反射，从而保证由导光层33出射的光也更为均匀，以使在第一液晶面板1和/或第二液晶面板2上的显示效果也达到了现有技术中的双面显示器的显示效果。
虽然已经参照特定实施例示出并描述了本发明，但是本领域的技术人员将理解：在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下，可在此进行形式和细节上的各种变化。

Claims (17)

  1. 一种双面显示器，包括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；所述背光模组包括分别设置于所述第一显示面板、第二显示面板内侧的第一光学膜片和第二光学膜片，以及设置于所述第一光学膜片和第二光学膜片之间的导光层，其中，所述导光层包括：
    分别设置于所述第一光学膜片、第二光学膜片内侧的第一网点反射层、第二网点反射层；其中，所述第一网点反射层和第二网点反射层表面相对应；以及
    至少一反光件及设置于所述反光件内侧的光源，所述反光件设置于所述第一网点反射层和第二网点反射层之间、位于所述导光层的一端；
    所述第一网点反射层、第二网点反射层与所述反光件围合形成一导光腔。
  2. 根据权利要求1所述的双面显示器，其中，所述导光层还包括设置于所述第一网点反射层和第二网点反射层之间的至少一支撑柱，用于保证所述第一网点反射层和第二网点反射层平行设置。
  3. 根据权利要求1所述的双面显示器，其中，所述第一网点反射层和第二网点反射层之间的距离为10mm～40mm。
  4. 根据权利要求2所述的双面显示器，其中，所述第一网点反射层和第二网点反射层之间的距离为10mm～40mm。
  5. 根据权利要求1所述的双面显示器，其中，所述第一网点反射层和/或所述第二网点反射层均包括一透明基层以及分散设置在所述透明基层上的反射层；两所述反射层相对应；用于使所述光源的出射光从所述透明基层中出射，或在所述反射层表面反射。
  6. 根据权利要求5所述的双面显示器，其中，所述透明基层的材料选自聚甲基丙烯酸甲酯、有机硅改性聚醚胶、聚苯乙烯、玻璃、聚碳酸酯、聚对苯二甲酸乙二醇酯中的任意一种；所述反射层的材料 选自碳酸钙、硫酸钡、氧化镁、银、铝、聚四氟悬浮树脂中的任意一种。
  7. 根据权利要求2所述的双面显示器，其中，所述第一网点反射层和/或所述第二网点反射层均包括一透明基层以及分散设置在所述透明基层上的反射层；两所述反射层相对应；用于使所述光源的出射光从所述透明基层中出射，或在所述反射层表面反射。
  8. 根据权利要求7所述的双面显示器，其中，所述透明基层的材料选自聚甲基丙烯酸甲酯、有机硅改性聚醚胶、聚苯乙烯、玻璃、聚碳酸酯、聚对苯二甲酸乙二醇酯中的任意一种；所述反射层的材料选自碳酸钙、硫酸钡、氧化镁、银、铝、聚四氟悬浮树脂中的任意一种。
  9. 根据权利要求1所述的双面显示器，其中，所述第一网点反射层和/或所述第二网点反射层均为一布设有通孔的非透光基板，以使所述光源的出射光从所述通孔中出射，或在所述非透光基板表面反射。
  10. 根据权利要求9所述的双面显示器，其中，所述通孔孔径小于1mm。
  11. 根据权利要求2所述的双面显示器，其中，所述第一网点反射层和/或所述第二网点反射层均为一布设有通孔的非透光基板，以使所述光源的出射光从所述通孔中出射，或在所述非透光基板表面反射。
  12. 根据权利要求11所述的双面显示器，其中，所述通孔孔径小于1mm。
  13. 根据权利要求1所述的双面显示器，其中，所述反光件为反光杯或反光板。
  14. 根据权利要求13所述的双面显示器，其中，所述反光杯的剖面为开口朝向所述导光腔内部的抛物线。
  15. 根据权利要求2所述的双面显示器，其中，所述反光件为反 光杯或反光板。
  16. 根据权利要求15所述的双面显示器，其中，所述反光杯的剖面为开口朝向所述导光腔内部的抛物线。
  17. 根据权利要求1所述的双面显示器，其中，所述光源为LED光源。
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