WO2016201748A1 - 液晶显示装置和用于液晶显示装置的导光板 - Google Patents

液晶显示装置和用于液晶显示装置的导光板 Download PDF

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Publication number
WO2016201748A1
WO2016201748A1 PCT/CN2015/083637 CN2015083637W WO2016201748A1 WO 2016201748 A1 WO2016201748 A1 WO 2016201748A1 CN 2015083637 W CN2015083637 W CN 2015083637W WO 2016201748 A1 WO2016201748 A1 WO 2016201748A1
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WIPO (PCT)
Prior art keywords
liquid crystal
display device
crystal display
light guide
guide plate
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Ceased
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PCT/CN2015/083637
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English (en)
French (fr)
Inventor
张彦学
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Publication of WO2016201748A1 publication Critical patent/WO2016201748A1/zh
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Ceased legal-status Critical Current

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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
    • G02F1/133504—Diffusing, scattering, diffracting 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
    • 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
    • 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
    • G02F1/133608—Direct backlight including particular frames or supporting means

Definitions

  • the invention belongs to the technical field of liquid crystal displays, and in particular relates to a liquid crystal display device capable of folding and a light guide plate for the liquid crystal display device.
  • the liquid crystal display device is a flat and ultra-thin display device, and the liquid crystal display device is mainly composed of a liquid crystal screen, and is widely used in display devices such as mobile phones, computers, televisions, and the like that need to display text content and/or images.
  • Liquid crystal display devices have become an indispensable device in people's lives.
  • the present invention provides a liquid crystal display device that can be folded.
  • the present invention also provides a light guide plate capable of assisting in folding a liquid crystal display device.
  • the present invention provides a liquid crystal display device comprising: a first liquid crystal panel having flexibility; a first backlight module for bonding with the first liquid crystal panel and having flexibility, the first backlight module comprising a first light guide plate having a rotating shaft groove formed on a lower surface of the first light guiding plate; and a front frame and a back plate which are connectable to each other and accommodate the first liquid crystal panel and the first backlight module.
  • the front frame and the back plate are configured to allow the first liquid crystal panel and the first backlight module to be folded with the rotating shaft groove as a rotating shaft.
  • the shaft grooves extend through the sides of the first light guide plate in the longitudinal or transverse direction.
  • the shaft slot extends through the geometric center of the lower surface of the first light guide.
  • the shaft groove has a V-shaped cross section.
  • two hinge shafts are provided on the front frame and the back plate. After the assembly of the liquid crystal display device is completed, the four hinge shafts and the rotation axis groove are in the same plane perpendicular to the first liquid crystal panel.
  • the front and back panels are each made of a memory alloy.
  • the first backlight module further includes a reflective sheet for engaging the lower surface of the first light guide plate, and a positioning groove extending toward the first backlight module is disposed on the back surface of the back plate, and the positioning slot is located
  • a reflective sheet for engaging the lower surface of the first light guide plate
  • a positioning groove extending toward the first backlight module is disposed on the back surface of the back plate, and the positioning slot is located
  • One side of the rotating shaft groove is provided with a second liquid crystal panel, a second brightening sheet group and a second light guiding plate for engaging with the reflective sheet in the positioning groove from the outside to the inside, wherein the reflective sheet is opened
  • There are a plurality of through holes so that the first backlight module can provide a light source for the second liquid crystal panel.
  • the plurality of vias are distributed in an equidistant array.
  • the second brightness enhancing sheet set includes a diffusion sheet, a brightness enhancement sheet, and a diffusion sheet that are sequentially stacked.
  • the present invention also provides a light guide plate for a liquid crystal display device, wherein a rotating shaft groove is formed on a lower surface of the light guide plate, and the rotating shaft groove penetrates both sides of the light guide plate in a longitudinal direction or a lateral direction.
  • the light guide plate having the rotating shaft groove can assist the liquid crystal display device to fold.
  • the liquid crystal display device passes through the flexible first liquid crystal panel and the flexible first backlight module and the track plate having the rotating shaft groove, and can allow the first liquid crystal panel and the first backlight module to be folded with the rotating shaft groove as a rotating shaft
  • the front frame and the back panel make it easy to fold the liquid crystal display device.
  • a display device such as a mobile phone, a computer, and a television uses the foldable liquid crystal display device of the present invention, the foldable function of the display device can be easily realized, thereby improving the convenience when the display device is carried.
  • the liquid crystal display device according to the present invention has a simple structure, is easy to manufacture, is quick to assemble, is simple and reliable to use, and is convenient for implementation and popularization.
  • FIG. 1 is a perspective view of a first embodiment of a liquid crystal display device according to the present invention, in which case the liquid crystal display device is in an unfolded state;
  • FIG. 2 is a perspective view of a first embodiment of a liquid crystal display device according to the present invention, in which case the liquid crystal display device is in a closed state;
  • Figure 3 is a cross-sectional view of the liquid crystal display device shown in Figure 1;
  • FIG. 4 is a perspective view of a first light guide plate of the liquid crystal display device shown in FIG. 1;
  • Figure 5 is a perspective view of the back plate of the liquid crystal display device shown in Figure 1;
  • Figure 6 is a perspective view of a front frame of the liquid crystal display device shown in Figure 1;
  • FIG. 7 is a schematic structural view of a second embodiment of a liquid crystal display device according to the present invention, in which case the liquid crystal display device is in an unfolded state;
  • Figure 8 is a schematic view showing the structure of a second embodiment of a liquid crystal display device according to the present invention, in which case the liquid crystal display device is in a closed state.
  • Figure 9 is a cross-sectional view of the liquid crystal display device shown in Figure 7;
  • Fig. 10 is a view showing the structure of a reflection sheet of the liquid crystal display device shown in Fig. 7.
  • FIGS. 1 and 2 are schematic views showing the structure of a first embodiment of a liquid crystal display device according to the present invention.
  • the liquid crystal display device shown in Fig. 1 is in an unfolded state (also referred to as an unfolded state), and the liquid crystal display device shown in Fig. 2 is in a closed state (also referred to as a folded state).
  • the liquid crystal display device 10 is substantially rectangular.
  • the liquid crystal display device 10 includes a first liquid crystal panel 2 having flexibility and a first backlight module 3 for being bonded to the back surface 2a of the first liquid crystal panel 2 (ie, the side facing away from the person in use) and having flexibility, and capable of The first liquid crystal panel 2 and the front frame 4 and the back plate 5 of the first backlight module 3 are connected to each other.
  • the flexible first liquid crystal panel 2 and the first backlight module 3 can be respectively selected as a flexible liquid crystal panel and a flexible backlight module.
  • the flexible liquid crystal panel and the flexible backlight module are all known technologies, and are not described herein again.
  • the first backlight module 3 includes a first brightness enhancement group 31, a first light guide plate 32, and a reflection sheet 33 which are sequentially away from the first liquid crystal panel 2.
  • the first brightness enhancing sheet set 31 comprises a diffusion sheet, a brightness enhancing sheet and a diffusion sheet which are sequentially stacked.
  • the diffusion sheet, the brightness enhancement sheet and the diffusion sheet are all well-known to those skilled in the art, and are not described herein again.
  • the first backlight module 3 should also include a light-emitting element (not shown) that provides a light source for the first liquid crystal panel 2, such as a light-emitting diode (LED).
  • the light-emitting elements are well known to those skilled in the art and will not be described herein.
  • a rotating shaft groove 321 is formed on the lower surface 32a of the first light guiding plate 32, while the front frame 4 and the back plate 5 are configured to allow the first liquid crystal panel 2 and the first backlight mode.
  • the group 3 is folded with the shaft groove 321 as a rotating shaft.
  • the folding of the first liquid crystal panel 2 and the first backlight module 3 with the rotating shaft groove 321 as a rotating shaft is actually the folding of the liquid crystal display device 10, as shown in FIG. 1 to FIG.
  • the cross section of the shaft groove 321 may be polygonal, semicircular, U-shaped or V-shaped. In a preferred embodiment, the shaft groove 321 has a V-shaped cross section, thereby facilitating the manufacturing difficulty.
  • the folding of the liquid crystal display device 10 is made smoother.
  • the rotating shaft groove 321 penetrates through two of the first light guide plates 32 in the longitudinal direction (ie, the longitudinal direction of the first light guide plate 32) or the lateral direction (ie, the width direction of the first light guide plate 32). side. It is easy to understand that the shaft groove 321 can also penetrate obliquely through both sides of the first light guide plate 32.
  • the rotary shaft groove 321 penetrates both sides of the first light guide plate 32 in the longitudinal direction or the lateral direction, so that the folded liquid crystal display device 10 can not only reduce its own size, but also avoid the occurrence of six sharp corners of the liquid crystal display device 10 after folding.
  • the rotation shaft groove 321 is disposed to penetrate the geometric center of the lower surface 32a of the first light guide plate 32.
  • the first light guide plate 32 may be rectangular, and the geometric center of the lower surface 32a of the first light guide plate 32 is the intersection of rectangular diagonal lines.
  • the shaft groove 321 passing through the geometric center can divide the first light guide plate 32 into two equal portions, so that the liquid crystal display device 10 has a smaller overall size after folding.
  • the backing plate 5 is roughly a rectangular box having an opening.
  • the backing plate 5 includes a bottom wall 53 and side walls 52 and an open cavity 51 defined by the bottom wall 53 and the side walls 52.
  • Two hinge shafts 55 are provided on the backing plate 5 with respect to the center of the backing plate 5.
  • the line of the two hinges 45 divides the backing plate 5 into two equal foldable folds 54.
  • the front frame 4 is substantially a rectangular frame.
  • Two front hinges 45 about the center of the front frame 4 are provided on the front frame 4.
  • Two hinge shafts 45 divide the front frame 4 into two foldable U-shaped portions 42.
  • the connection between the front frame 4 and the back plate 5 may be a fixed connection such as riveting, snapping, and bolting.
  • the four hinge shafts and the shaft groove 321 are in the same plane perpendicular to the first liquid crystal panel 2, so that the rotational positions of the front frame 4 and the back plate 5 are aligned with the rotation axis groove 321 Therefore, the first liquid crystal panel 2 and the first backlight module 3 are allowed to be folded with the rotating shaft groove 321 as a rotating shaft.
  • the front frame 4 and the back panel 5 may each be made of a memory alloy.
  • the front frame 4 and the back plate 5 are both made of a memory alloy, the front frame 4 and the back plate 5 can be folded at any position, so the front frame 4 and the back plate 5 can allow the first liquid crystal panel 2 and The first backlight module 3 is folded by the rotation shaft groove 321 as a rotation axis.
  • a spare liquid crystal panel 7 can be disposed inside the back surface 5a of the liquid crystal display device 10.
  • Figure 7 and Figure 8. As shown in FIG. 9, in order to smoothly mount the liquid crystal panel 7, a positioning groove 8 extending toward the first backlight module 3 is opened on the back surface 5a of the back plate 5. The positioning groove 8 is for accommodating the liquid crystal panel 7.
  • the liquid crystal panel 7 can belong to a thin film transistor liquid crystal display.
  • the liquid crystal panel 7 can be selected as a flexible liquid crystal screen, or can be selected as a conventional non-bendable liquid crystal screen.
  • the positioning groove 8 should be located at one side of the rotating shaft slot 321, so that the size of the liquid crystal screen 7 does not exceed the first liquid crystal panel 2 or the first backlight.
  • Half of the module 3 can thereby effectively prevent the liquid crystal panel 7 from affecting the folding of the first liquid crystal panel 2 and the first backlight module 3.
  • the side wall of the positioning groove 8 is provided with a projection 9 for fixing the liquid crystal panel 7 to the positioning groove 8.
  • the liquid crystal panel 7 includes a second liquid crystal panel 74 and a second brightening sheet group 73 disposed in the positioning groove 8 and arranged in order from the outside to the inside, and a second light guiding plate for engaging with the reflective sheet 33. 72.
  • the second brightness enhancement set 73 includes a diffusion sheet, a brightness enhancement sheet, and a diffusion sheet that are sequentially stacked.
  • the first backlight module 3 can provide a light source for the second liquid crystal panel 74 through the plurality of through holes 331 , so that the light emitting element, such as a light emitting diode (LED), can be omitted in the liquid crystal panel 7 . That is to say, the light source elements required in the liquid crystal panel 7 can be omitted by the plurality of through holes 331 on the reflection sheet 33, whereby the production cost of the liquid crystal display device 10 can be reduced.
  • LED light emitting diode
  • a plurality of vias 331 are disposed on the reflective sheet 33 in the form of an equidistant array, as detailed in FIG.
  • the distribution range of the plurality of through holes 331 should not exceed the range used by the liquid crystal panel 7, so as not to greatly reduce the display effect of the first liquid crystal panel 2.
  • the first backlight module 3 can provide a uniform light source for the second liquid crystal panel 74 through the array-shaped through holes 331 , thereby improving the display effect of the liquid crystal panel 7 .
  • the liquid crystal display device 10 has a foldable function, and when the display device such as a mobile phone, a computer, and a television uses the foldable liquid crystal display device 10 of the present invention, the foldable function of the display device can be easily realized. Thereby, it is convenient to improve the convenience when the display device is carried.

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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)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种液晶显示装置和一种用于液晶显示装置的导光板。液晶显示装置包括：柔性的第一液晶面板（2）、用于与第一液晶面板（2）相接合的且具有柔性的第一背光模组（3）以及能够彼此连接并容纳第一液晶面板（2）和第一背光模组（3）的前框（4）和背板（5）。第一背光模组（3）包括第一导光板（32），在第一导光板（32）的下表面上开设有转轴槽（321），前框（4）和背板（5）构造成能够允许第一液晶面板（2）和第一背光模组（3）以转轴槽（321）为转轴进行折叠。还提供了一种用于液晶显示装置的导光板（32）。液晶显示装置具有可折叠的功能，从而便于提高显示设备被携带时的方便性。

Description

液晶显示装置和用于液晶显示装置的导光板
相关申请的交叉引用
本申请要求享有于2015年06月18日提交的名称为“液晶显示装置和用于液晶显示装置的导光板”的中国专利申请CN 201510338519.5的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明属于液晶显示器技术领域，具体涉及一种能够折叠的液晶显示装置以及一种用于该液晶显示装置的导光板。
背景技术
液晶显示装置为平面超薄的显示装置，液晶显示装置主要由液晶屏组成，广泛使用在手机、电脑、电视等需要显示文字内容和/或画面的显示设备中。液晶显示装置已经成为人们生活中不可或缺的装置。
近年来，手机、电脑和电视等显示设备对液晶显示装置的尺寸的要求越来越大，但是随着液晶显示装置的尺寸增加，导致显示设备的整体尺寸随液晶显示装置的尺寸增加而增加，影响显示设备被携带时的方便性。为了提高显示设备被携带时的方便性，人们常常设想把显示设备设置成可折叠的，然而由于显示设备内的液晶显示装置无法实现折叠功能，导致可折叠的显示设备始终是个空想。
因此，为了实现可折叠的显示设备，亟需一种能够折叠的液晶显示装置。
发明内容
为了解决上述问题，本发明提供了一种能够折叠的液晶显示装置。本发明还提供一种能够辅助液晶显示装置进行折叠的导光板。
本发明提供了一种液晶显示装置，该液晶显示装置包括：具有柔性的第一液晶面板；用于与第一液晶面板相接合的且具有柔性的第一背光模组，第一背光模组包括第一导光板，在第一导光板的下表面上开设有转轴槽；以及能够彼此连接并容纳第一液晶面板和第一背光模组的前框和背板。其中，前框和背板构造成能够允许第一液晶面板和第一背光模组以转轴槽为转轴进行折叠。
在一个实施例中，转轴槽沿着纵向或横向贯穿第一导光板的两侧。
在一个实施例中，转轴槽贯穿第一导光板的下表面的几何中心。
在一个实施例中，转轴槽的横截面为V形。
在一个实施例中，在前框和背板上均设有两个铰轴，在液晶显示装置的组装完成后，四个铰轴与转轴槽同在一个垂直于第一液晶面板的平面内。
在一个实施例中，前框和背板均由记忆合金制成。
在一个实施例中，第一背光模组还包括用于与第一导光板的下表面相接合的反射片，在背板的背面开设有朝向第一背光模组延伸的定位槽，定位槽位于转轴槽的一侧，在定位槽内沿着由外到内的方向依次设有第二液晶面板、第二增亮片组和用于与反射片相接合的第二导光板，其中在反射片上开设有多个通孔，使得第一背光模组能为第二液晶面板提供光源。
在一个实施例中，多个通孔呈等距阵列式分布。
在一个实施例中，第二增亮片组包括依次堆叠的扩散片、增亮片和扩散片。
本发明还提供一种用于液晶显示装置的导光板，在导光板的下表面上开设有转轴槽，转轴槽沿着纵向或横向贯穿导光板的两侧。其中，具有转轴槽的导光板能够辅助液晶显示装置进行折叠。
根据本发明的液晶显示装置通过柔性的第一液晶面板和柔性的第一背光模组及具有转轴槽的导轨板，以及能够允许第一液晶面板和第一背光模组以转轴槽为转轴进行折叠的前框和背板可轻松实现液晶显示装置的可折叠功能。当显示设备例如手机、电脑和电视使用本发明的可折叠的液晶显示装置时，很容易实现该显示设备的可折叠功能，从而提高显示设备被携带时的方便性。
同时，根据本发明的液晶显示装置的结构简单，制造容易，组装快速，使用简单可靠，便于实施推广应用。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。其中：
图1为根据本发明的液晶显示装置的第一个实施例的立体图，此时液晶显示装置处于展开状态；
图2为根据本发明的液晶显示装置的第一个实施例的立体图，此时液晶显示装置处于闭合状态；
图3为图1所示的液晶显示装置的剖视图；
图4为图1所示的液晶显示装置的第一导光板的立体图；
图5为图1所示的液晶显示装置的背板的立体图；
图6为图1所示的液晶显示装置的前框的立体图；
图7为根据本发明的液晶显示装置的第二个实施例的结构示意图，此时液晶显示装置处于展开状态；
图8为根据本发明的液晶显示装置的第二个实施例的结构示意图，此时液晶显示装置处于闭合状态。
图9为图7所示的液晶显示装置的剖视图；以及
图10为图7所示的液晶显示装置的反射片的结构示意图。
在附图中相同的部件使用相同的附图标记。附图并未按照实际的比例绘制。
具体实施方式
下面将结合附图对本发明作进一步说明。
图1和图2为根据本发明的液晶显示装置的第一个实施例的结构示意图。图1所示的液晶显示装置处于展开状态(又称未折叠状态)，图2所示的液晶显示装置处于闭合状态(又称已折叠状态)。如图1-3所示，该液晶显示装置10大致为矩形。液晶显示装置10包括具有柔性的第一液晶面板2和用于与第一液晶面板2的背面2a(即使用时背向人们的侧面)相接合的且具有柔性的第一背光模组3，以及能够彼此连接并容纳第一液晶面板2和第一背光模组3的前框4和背板5。其中，所述的具有柔性的第一液晶面板2和第一背光模组3可分别选为柔性液晶面板和柔性背光模组。其中，柔性液晶面板和柔性背光模组均属于已知技术，在此不再赘述。
如图3所示，第一背光模组3包括依次远离第一液晶面板2的第一增亮片组31、第一导光板32和反射片33。在一个优选的实施例中，第一增亮片组31包括依次堆叠的扩散片、增亮片和扩散片。其中，所述的扩散片、增亮片和扩散片均属于本领域技术人员熟知的，在此不再赘述。容易理解，第一背光模组3还应包括为第一液晶面板2提供光源的发光元件(未示出)，例如发光二极管(英文简称LED)。所述的发光元件属于本领域技术人员熟知的，在此不再赘述。
为了确保液晶显示装置10能顺利进行折叠，在第一导光板32的下表面32a上开设有转轴槽321，同时前框4和背板5构造成能够允许第一液晶面板2和第一背光模组3以转轴槽321为转轴进行折叠。第一液晶面板2和第一背光模组3以转轴槽321为转轴的折叠事实上就是液晶显示装置10的折叠，详见图1到图3。转轴槽321的横截面可为多边形、半圆形、U形或V形。在一个优选的实施中，转轴槽321的横截面为V形，由此可以在降低制造难度的同时促 使液晶显示装置10的折叠更加顺畅。
在该实施例中，如图4所示，转轴槽321沿着纵向(即第一导光板32的长度方向)或横向(即第一导光板32的宽度方向)贯穿第一导光板32的两侧。容易理解，转轴槽321也可倾斜地贯穿第一导光板32的两侧。转轴槽321沿着纵向或横向贯穿第一导光板32的两侧，以使得折叠后的液晶显示装置10不仅可以缩减自身尺寸，而且还可以避免液晶显示装置10在折叠后出现六个尖角。
为了保证折叠后的液晶显示装置10的尺寸最小化，转轴槽321设置成贯穿第一导光板32的下表面32a的几何中心。第一导光板32可为矩形，第一导光板32的下表面32a的几何中心便是矩形对角线的交点。穿过几何中心的转轴槽321能把第一导光板32分割成两个相等的部分，使得液晶显示装置10在折叠后具有更小的整体尺寸。
如图5所示，背板5大致为具有开口的矩形盒。背板5包括底壁53和侧壁52以及底壁53和侧壁52所限定的开口腔51。在背板5上设有两个关于背板5的中心对称的铰轴55。两个铰轴45的连线把背板5分隔成两个相等的可折叠的折叠部54。如图6所示，前框4大致为矩形框。在前框4上设有两个关于前框4的中心对称的铰轴45。两个铰轴45把前框4分隔成两个可折叠的U形部分42。前框4与背板5之间的连接可选为铆接、卡接和螺栓连接等固定连接。在液晶显示装置10的组装完成后，上述四个铰轴与转轴槽321同在一个垂直于第一液晶面板2的平面内，使得前框4和背板5的转动位置与转轴槽321相对齐，从而允许第一液晶面板2和第一背光模组3以转轴槽321为转轴进行折叠。
除此之外，为了实现前框4和背板5的折叠，前框4和背板5均可由记忆合金制成。然而由于前框4和背板5均由记忆合金制成，使得前框4和背板5能够以任意位置为转轴进行折叠，因此该前框4和背板5能够允许第一液晶面板2和第一背光模组3以转轴槽321为转轴进行折叠。
折叠后的液晶显示装置10的背面将暴漏于外界，使得液晶显示装置10在折叠后不能显示内容，因此在该液晶显示装置10的背面5a的内部可设有备用的液晶屏7，详见图7和图8。如图9所示，为了顺利安装该液晶屏7，在背板5的背面5a开设有朝向第一背光模组3延伸的定位槽8。定位槽8用于容纳液晶屏7。该液晶屏7可属于薄膜晶体管液晶显示器。该液晶屏7可选为柔性液晶屏，也可选择为常规的不可弯曲的液晶屏。
为了避免液晶屏7影响第一液晶面板2和第一背光模组3的折叠，定位槽8应位于转轴槽321的一侧，使得液晶屏7的尺寸不超过第一液晶面板2或第一背光模组3的一半，由此可以有效避免液晶屏7影响第一液晶面板2和第一背光模组3的折叠。
在定位槽8的开口端处，定位槽8的侧壁上设有用于把液晶屏7固定在定位槽8的凸起9。 液晶屏7包括设在定位槽8内的且沿着由外到内的方向依次布置的第二液晶面板74和第二增亮片组73，以及用于与反射片33相接合的第二导光板72。在一个实施例中，第二增亮片组73包括依次堆叠的扩散片、增亮片和扩散片。
如图9和图10所示，在反射片33上开设有多个通孔331。第一背光模组3可通过多个通孔331为第二液晶面板74提供光源，由此可以不用在液晶屏7内再次设置发光元件，例如发光二极管(英文简称LED)。也就是说，通过反射片33上的多个通孔331可省掉液晶屏7内所需要的发光源元件，由此可以降低该液晶显示装置10的生产成本。
在一个优选的实施中，多个通孔331以等距阵列的形式设置在反射片33上，详见图10。多个通孔331的分布范围不应超过液晶屏7的所用范围，以免大幅度降低第一液晶面板2的显示效果。第一背光模组3能通过阵列式分布的通孔331为第二液晶面板74提供均匀的光源，从而提高液晶屏7的显示效果。
综上可知，根据本发明的液晶显示装置10具有可折叠功能，当显示设备例如手机、电脑和电视使用本发明的可折叠的液晶显示装置10时，很容易实现该显示设备的可折叠功能，从而便于提高显示设备被携带时的方便性。
虽然已经参考优选实施例对本发明进行了描述，但在不脱离本发明的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本发明并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (16)

  1. 一种液晶显示装置，包括：
    具有柔性的第一液晶面板；
    用于与所述第一液晶面板相接合的且具有柔性的第一背光模组，所述第一背光模组包括第一导光板，在所述第一导光板的下表面上开设有转轴槽；以及
    能够彼此连接并容纳所述第一液晶面板和第一背光模组的前框和背板；
    其中，所述前框和背板构造成能够允许所述第一液晶面板和第一背光模组以所述转轴槽为转轴进行折叠。
  2. 根据权利要求1所述的液晶显示装置，其中，所述转轴槽沿着纵向或横向贯穿所述第一导光板的两侧。
  3. 根据权利要求2所述的液晶显示装置，其中，所述转轴槽贯穿所述第一导光板的下表面的几何中心。
  4. 根据权利要求3所述的液晶显示装置，其中，所述转轴槽的横截面为V形。
  5. 根据权利要求4所述的液晶显示装置，其中，在所述前框和背板上均设有两个铰轴，在所述液晶显示装置的组装完成后，四个所述铰轴与所述转轴槽同在一个垂直于所述第一液晶面板的平面内。
  6. 根据权利要求4所述的液晶显示装置，其中，所述前框和背板均由记忆合金制成。
  7. 根据权利要求5所述的液晶显示装置，其中，所述第一背光模组还包括与所述第一导光板的下表面相接合的反射片，在所述背板的背面开设有朝向所述第一背光模组延伸的定位槽，所述定位槽位于所述转轴槽的一侧，在所述定位槽内沿着由外到内的方向依次设有第二液晶面板、第二增亮片组和用于与所述反射片相接合的第二导光板，其中在所述反射片上开设有多个通孔，使得所述第一背光模组能为所述第二液晶面板提供光源。
  8. 根据权利要求7所述的液晶显示装置，其中，多个所述通孔呈等距阵列式分布。
  9. 根据权利要求7所述的液晶显示装置，其中，所述第二增亮片组包括依次堆叠的扩散片、增亮片和扩散片。
  10. 根据权利要求1所述的液晶显示装置，其中，所述转轴槽的横截面为V形。
  11. 根据权利要求1所述的液晶显示装置，其中，在所述前框和背板上均设有两个铰轴，在所述液晶显示装置的组装完成后，四个所述铰轴与所述转轴槽同在一个垂直于所述第一液晶面板的平面内。
  12. 根据权利要求1所述的液晶显示装置，其中，所述前框和背板均由记忆合金制成。
  13. 根据权利要求1所述的液晶显示装置，其中，所述第一背光模组还包括与所述第一导光板的下表面相接合的反射片，在所述背板的背面开设有朝向所述第一背光模组延伸的定位槽，所述定位槽位于所述转轴槽的一侧，在所述定位槽内沿着由外到内的方向依次设有第二液晶面板、第二增亮片组和用于与所述反射片相接合的第二导光板，其中在所述反射片上开设有多个通孔，使得所述第一背光模组能为所述第二液晶面板提供光源。
  14. 根据权利要求13所述的液晶显示装置，其中，多个所述通孔呈等距阵列式分布。
  15. 根据权利要求14所述的液晶显示装置，其中，所述第二增亮片组包括依次堆叠的扩散片、增亮片和扩散片。
  16. 一种用于液晶显示装置的导光板，其中，在所述导光板的下表面上开设有转轴槽，所述转轴槽沿着纵向或横向贯穿所述导光板的两侧。
PCT/CN2015/083637 2015-06-18 2015-07-09 液晶显示装置和用于液晶显示装置的导光板 Ceased WO2016201748A1 (zh)

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