WO2020211521A1 - 显示装置及透明窗 - Google Patents

显示装置及透明窗 Download PDF

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Publication number
WO2020211521A1
WO2020211521A1 PCT/CN2020/075988 CN2020075988W WO2020211521A1 WO 2020211521 A1 WO2020211521 A1 WO 2020211521A1 CN 2020075988 W CN2020075988 W CN 2020075988W WO 2020211521 A1 WO2020211521 A1 WO 2020211521A1
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Prior art keywords
transparent
base layer
transparent base
layer
display device
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PCT/CN2020/075988
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English (en)
French (fr)
Inventor
赵星
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京东方科技集团股份有限公司
北京京东方专用显示科技有限公司
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Publication of WO2020211521A1 publication Critical patent/WO2020211521A1/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
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals

Definitions

  • the present disclosure relates to the field of display technology, in particular to display devices and transparent windows.
  • Vehicles, buildings, etc. will be equipped with transparent windows (such as transparent glass windows) for users to watch the outside scene.
  • transparent windows such as transparent glass windows
  • An embodiment of the present disclosure provides a display device, including: a first transparent base layer, the first transparent base layer can be energized to change color and become non-transparent; a light guide plate and a transparent liquid crystal display panel arranged on the first transparent base layer are sequentially stacked , A second transparent base layer; and a light source located at the periphery of the light guide plate and configured to provide a backlight for the transparent liquid crystal display panel through the light guide plate in response to the first transparent base layer becoming non-transparent.
  • the first transparent base layer includes a first transparent substrate and a first electrochromic layer that are stacked.
  • the first electrochromic layer is disposed between the first transparent substrate and the light guide plate.
  • the first electrochromic layer includes a first electrode layer, an electrochromic material layer, and a second electrode layer that are stacked.
  • the light source and the light guide plate are arranged in the same layer and located between the first transparent base layer and the second transparent base layer.
  • the light source includes two point light sources or line light sources, and the two point light sources or line light sources are arranged on opposite sides of the light guide plate.
  • the second transparent base layer includes a second transparent substrate and a second electrochromic layer that are stacked.
  • the second electrochromic layer is disposed between the second transparent substrate and the transparent liquid crystal display panel.
  • the display device has a display area and a non-display area, the non-display area is located one week of the display area; the display device further includes a light shielding layer, the light shielding layer is disposed on the first A portion of the transparent base layer and the second transparent base layer located in the non-display area.
  • the light guide plate, the transparent liquid crystal display panel, and the light source are sealed and sandwiched between the first transparent base layer and the second transparent base layer.
  • the embodiment of the present disclosure also provides a transparent window including the display device according to the embodiment of the present disclosure.
  • FIG. 1 is a schematic structural diagram of a display device provided by an embodiment of the present disclosure.
  • FIG. 2 is a schematic diagram of another structure of a display device provided by an embodiment of the present disclosure.
  • FIG. 3 is a schematic diagram of still another structure of a display device provided by an embodiment of the present disclosure.
  • Fig. 1 shows a schematic structural diagram of a display device provided by an embodiment of the present disclosure.
  • the display device includes: a first transparent base layer 1, the first transparent base layer 1 can be energized to change color and become opaque; and a light guide plate 2 and a transparent layer disposed on the first transparent base layer 1 are sequentially laminated
  • the liquid crystal display panel 3, the second transparent base layer 4; the light source 5, the light source 5 is arranged on the periphery of the light guide plate 2.
  • the light source 5 can be a point light source or a line light source.
  • the transparent liquid crystal display panel 3, the light guide plate 2 and the light source 5 can be sealed and sandwiched between the first transparent base layer 1 and the second transparent base layer 2, and the light guide plate 2 can be It is adapted to the transparent liquid crystal display panel 3 to convert the light source 5 into a surface light source to provide a backlight for the transparent liquid crystal display panel 3.
  • the first transparent base layer 1 can be obtained by combining a transparent substrate and an electrochromic layer. It can be a flat structure or a plate with a certain curvature. The specific shape can be selected according to the needs of use.
  • the energized color-changing function of the first transparent base layer 1 can be realized by the electrochromic layer.
  • the light guide plate 2 can be a plate body that can convert a point light source 5 into a surface light source, and the material used can be optical glass, polymethylmethacrylate (PMMA) or polycarbonate (PC), which can be made according to actual needs
  • the shape and curvature of the light guide plate 2 can be matched with the first transparent base layer 1.
  • the light guide plate 2 and the first transparent base layer 1 can be bonded by transparent glue or fixed by transparent tape.
  • the transparent liquid crystal display panel 3 can be a structure known to those skilled in the art, which will not be repeated in this disclosure.
  • the shape and the curvature of the transparent liquid crystal display panel 3 can be adapted to the first transparent base layer 1 and the light guide plate 2.
  • the liquid crystal display panel 3 and the light guide plate 2 can be bonded with transparent glue, or a transparent tape can be used to fix the two, and when the two are fixed with transparent tape, the transparent liquid crystal display panel 3 and the light guide plate 2 can be fixed with transparent tape. Paste the edges of the two to achieve the adhesion and fixation of the two while preventing dust from entering between the two.
  • the second transparent base layer 4 may have the same structure as the first transparent base layer 1, or it may only be a transparent glass panel, acrylic panel or plastic panel with a certain strength. Similarly, the shape and curvature of the second transparent base layer 4 can be Compatible with the first transparent base layer 1, the second transparent base layer 4 and the transparent liquid crystal display panel 3 can be bonded by transparent glue.
  • the light source 5 can be arranged as a strip-shaped LED light source as required, and the light source 5 can include multiple LED light sources, for example, multiple LED light sources can be arranged around the periphery of the light guide plate 2.
  • the light guide plate 2 and the transparent liquid crystal display panel 3 may be connected as a whole and sandwiched between the first transparent base layer 1 and the second transparent base layer 4, that is, the first transparent base layer 1 and the second transparent base layer 4 pair the light guide plate. 2 After connecting with the transparent liquid crystal display panel 3, a clamping force is applied to the whole, so that the light guide plate 2 and the transparent liquid crystal display panel 3 are fixed between the first transparent base layer 1 and the second transparent base layer 4.
  • a sealing structure can also be made at the edge between the first transparent base layer 1 and the second transparent base layer 4 to connect the light guide plate 2, the transparent liquid crystal display panel 3 And the light source 5 is sealed between the first transparent base layer 1 and the second transparent base layer 4.
  • a transparent liquid crystal display panel 3 is provided between two transparent base layers (ie, the first transparent base layer 1 and the second transparent base layer 4), and ambient light can be used as the transparent liquid crystal display panel 3.
  • the backlight source is used to display information such as advertisements through the transparent liquid crystal display panel 3.
  • the first transparent base layer 1 is set as a base layer that can be energized to change color, so that by energizing the first transparent base layer 1 to make it non-transparent, the first transparent base layer 1 can be used as a back plate, and at the same time, it is placed on the light guide plate 2.
  • the surrounding light source 5 is energized, and information can also be displayed through the transparent liquid crystal display panel 3.
  • the display device provided by the embodiments of the present disclosure can use natural light as a backlight source for display when the ambient light conditions are good, and can use the light source 5 as a backlight source for display when the ambient light conditions are poor, which is conducive to saving Energy consumption.
  • the first transparent base layer 1 may include a first transparent substrate 11 and a first electrochromic layer 12 that are stacked.
  • the first transparent substrate 11 may be a glass plate or an acrylic plate.
  • the first electrochromic layer 12 can be disposed on the surface of the first transparent substrate 11, and the first electrochromic layer 12 can be a compound of bauhinia derivatives, so that the first electrochromic layer 12 can be present without electricity.
  • the colorless state that is, the transparent state, so that when the ambient light conditions are good, the ambient light can be used as a backlight source to display the transparent liquid crystal display panel 3.
  • the first electrochromic layer 12 can be energized.
  • positive and negative electrodes can be provided on both surfaces of the first electrochromic layer 12, and then the first electrochromic layer 12 can be electrically charged through the positive and negative electrodes.
  • the electrochromic layer 12 is energized, or the first electrochromic layer 12 may be composed of a first electrode layer, an electrochromic material layer, and a second electrode layer that are stacked, and may be sandwiched between the first electrode layer and the second electrode layer.
  • the middle electrochromic material layer is electrified, and the first electrochromic layer 12 can change its color and be in an opaque state, so that the first transparent substrate 11 can be used as an opaque back plate.
  • the light source 5 around the light guide plate 2 is energized, and the transparent liquid crystal display panel 3 can also display, and the user can view from the side of the second transparent base layer 4.
  • the first electrochromic layer 12 may be disposed between the first transparent substrate 11 and the light guide plate 2, so as to protect the first electrochromic layer 12 and avoid first The electrochromic layer 12 is scratched.
  • the area of the light guide plate 2 may be greater than or equal to the area of the transparent liquid crystal display panel 3.
  • the orthographic projection of the transparent liquid crystal display panel 3 on the light guide plate 2 (that is, the projection projected in a direction perpendicular to the light guide plate 2) may be located in the surface of the light guide plate 2. In this way, when the light source 5 is energized, the transparent liquid crystal display panel 3 can be provided with sufficient backlight through the light guide plate 2.
  • the size of the first transparent base layer 1 and the second transparent base layer 4 can be larger than the size of the light guide plate 2, so that the light guide plate 2 and the light source 5 can be arranged in the same layer on the first transparent base layer 1 and the second transparent base layer 4. In between, the thickness of the entire display device will not be increased, and the entire display device can be made thinner.
  • the light guide plate 2 may be made of optical glass.
  • the light guide plate 2 made of optical glass can ensure the effect of converting the light source 5, which will be a point light source or a line light source, into a surface light source, and can adapt to an environment with a large temperature difference.
  • the light source 5 may include one or more point light sources or line light sources, which may be set according to specific requirements.
  • the light source 5 may include two line light sources, which may be arranged on the light guide plate 2. In this way, the surface light source formed by the conversion of the light guide plate 2 can be more uniform.
  • the second transparent base layer 4 may include a second transparent substrate 41 and a second electrochromic layer 42 that are stacked.
  • the second transparent substrate 41 may be a glass plate or an acrylic plate.
  • the second transparent base layer 4 includes the second electrochromic layer 42 to enable the display device to perform bidirectional display.
  • the first electrochromic layer 12 in the first transparent base layer 1 can be energized or the second electrochromic layer 12 can be energized according to the needs of the display direction.
  • the second electrochromic layer 42 in the transparent base layer 4 is energized, so that the display device can display through the second transparent base layer 4 side or through the first transparent base layer 2 side.
  • the second electrochromic layer 42 may be disposed on the surface of the second transparent substrate 41, and the energization principle or specific structure of the second electrochromic layer 42 may be the same as that of the first electrochromic layer 12, which will not be repeated here.
  • the second electrochromic layer 42 may be disposed between the second transparent substrate 41 and the liquid crystal display panel 3, so as to protect the second electrochromic layer 42 and avoid The second electrochromic layer 42 is scratched.
  • the display device includes a display area and a non-display area, the non-display area is located around the display area, and the first transparent base layer 1 and the second transparent base layer 4 are located at all sides.
  • the non-display area is provided with a light shielding layer.
  • the display area of the transparent liquid crystal display panel 3 is set in the display area of the display device, that is, the display area of the transparent liquid crystal display panel 3 is projected in the direction perpendicular to the display surface of the display device.
  • the light-shielding layers on the first transparent base layer 1 and the second transparent base layer 4 can be arranged by silk screen printing. The arrangement of the light-shielding layer can shield the structure of the non-display area, and can improve the aesthetics of the display device.
  • the energization mode of the transparent liquid crystal display panel 3, the light source 5, the first electrochromic layer 12, and the second electrochromic layer 42 can refer to the energization mode of each functional layer in a general liquid crystal display panel, for example, Reserve an electrical connection terminal at a specific location, and then connect it to the power supply of the peripheral and the controller through the electrical connection terminal.
  • the power supply of the peripheral can be the power supply in the building, vehicle power supply, battery, etc.
  • the controller can be an intelligent electronic device , Such as mobile phones, computers.
  • the embodiment of the present disclosure also provides a transparent window, which includes the display device of the embodiment of the present disclosure.
  • a transparent window which includes the display device of the embodiment of the present disclosure.
  • the transparent window of the embodiment of the present disclosure can be used as a vehicle window, a building window, etc., and not only has the see-through function of a traditional transparent window, but also has a display function.
  • the transparent window of the embodiment of the present disclosure can use natural light as the backlight source for display, and when the ambient light condition is poor, the transparent window of the embodiment of the present disclosure can use the light source 5 as the backlight.
  • Source display is helpful to save energy.

Abstract

一种显示装置和一种透明窗，所述显示装置包括：第一透明基层（1），第一透明基层（1）能够通电变色而变为非透明；依次层叠设置在第一透明基层（1）上的导光板（2）、透明液晶显示面板（3）、第二透明基层（4）；以及光源（5），光源（5）位于导光板（2）的周边，配置为响应于第一透明基层（1）变为非透明而通过导光板（2）为透明液晶显示面板（3）提供背光。

Description

显示装置及透明窗
相关申请的交叉引用
本申请要求于2019年4月17提交的中国专利申请NO.201910308705.2的优先权，该中国专利申请的全部内容通过引用的方式合并于此。
技术领域
本公开涉及显示技术领域，特别涉及显示装置及透明窗。
背景技术
车辆、建筑物等都会设置透明窗(如透明玻璃窗)，以供用户观看外面的景象。
但是仅仅将透明窗用于观看景象则会造成一定的浪费。
发明内容
本公开的实施例提供一种显示装置，包括：第一透明基层，所述第一透明基层能够通电变色而变为非透明；依次层叠设置在第一透明基层上的导光板、透明液晶显示面板、第二透明基层；以及光源，所述光源位于所述导光板的周边，配置为响应于所述第一透明基层变为非透明而通过所述导光板为所述透明液晶显示面板提供背光。
在一些实施方式中，所述第一透明基层包括层叠设置的第一透明基板和第一电致变色层。
在一些实施方式中，所述第一电致变色层设置在所述第一透明基板和所述导光板之间。
在一些实施方式中，所述第一电致变色层包括层叠设置的第一电极层、电致变色材料层以及第二电极层。
在一些实施方式中，所述光源与所述导光板同层设置，且位于 所述第一透明基层和所述第二透明基层之间。
在一些实施方式中，所述光源包括两个点光源或线光源，所述两个点光源或线光源设置在所述导光板的相对两侧。
在一些实施方式中，所述第二透明基层包括层叠设置的第二透明基板和第二电致变色层。
在一些实施方式中，所述第二电致变色层设置在第二透明基板和所述透明液晶显示面板之间。
在一些实施方式中，所述显示装置具有显示区和非显示区，所述非显示区位于所述显示区的一周；所述显示装置还包括遮光层，所述遮光层设置于所述第一透明基层和所述第二透明基层的位于所述非显示区的部分。
在一些实施方式中，所述导光板、所述透明液晶显示面板、所述光源被密封夹设在所述第一透明基层和所述第二透明基层之间。
本公开的实施例还提供一种透明窗，包括根据本公开的实施例的显示装置。
附图说明
图1是本公开的实施例提供的显示装置的一种结构示意图。
图2是本公开的实施例提供的显示装置的另一种结构示意图。
图3是本公开的实施例提供的显示装置的再一种结构示意图。
具体实施方式
为了能够更清楚地说明本公开的技术方案，以下参照附图和实施例对本公开的技术方案进行详细说明。在不冲突的情况下，实施例中的各特征、结构、或特点可以任何合适形式组合。
图1示出了本公开的实施例提供的显示装置的一种结构示意图。如图1所示，所述显示装置包括：第一透明基层1，所述第一透明基层1能够通电变色而变为非透明；依次层叠设置在第一透明基层1上的导光板2、透明液晶显示面板3、第二透明基层4；光源5，所述 光源5设置于所述导光板2的周边。
本实施例中，光源5可以为点光源或线光源，透明液晶显示面板3、导光板2和光源5可密封夹设在第一透明基层1和第二透明基层2之间，导光板2可适配于透明液晶显示面板3，以将光源5转换为面光源，为透明液晶显示面板3提供背光。
第一透明基层1可以是由透明的基板与电致变色层结合获得的，其可以是平板的结构，也可以是具有一定的弯曲弧度的板体，其具体的形状可以根据使用需要进行选择。第一透明基层1的通电变色的功能可以由电致变色层来实现。导光板2可以是能够将点光源5转换成面光源的板体，其使用的材质可以是光学玻璃、聚甲基丙烯酸甲酯(PMMA)或聚碳酸酯(PC)材质，可以根据实际需要进行选用，导光板2的形状以及弯曲的弧度可与第一透明基层1相匹配，导光板2与第一透明基层1之间可以通过透明胶水粘结，也可以通过透明的胶带进行固定。透明液晶显示面板3可以选用本领域技术人员所知的结构，本公开中不做赘述，透明液晶显示面板3的形状以及弯曲的弧度可与第一透明基层1以及导光板2相适配，透明液晶显示面板3与导光板2之间可以采用透明胶水粘结，或者采用透明胶带对二者进行固定，且使用透明胶带固定二者时，可使用透明胶带对透明液晶显示面板3与导光板2的边沿一周粘贴，以达到二者粘结固定的同时防止二者之间进入灰尘。第二透明基层4可以与第一透明基层1为相同的结构，也可以仅是透明且具有一定强度的玻璃面板、亚克力面板或者塑胶面板，同样，第二透明基层4的形状以及弯曲的弧度可与第一透明基层1相适配，第二透明基层4与透明液晶显示面板3之间可通过透明胶水粘结。光源5可以根据需要设置成条形的LED光源，光源5可以包括多个LED光源，例如多个LED光源可围设在导光板2的周边。此外，也可以将导光板2和透明液晶显示面板3连接之后作为整体夹在第一透明基层1和第二透明基层4之间，即通过第一透明基层1和第二透明基层4对导光板2和透明液晶显示面板3连接之后的整体施加夹紧力，使导光板2和透明液晶显示面板3连接之后的整体固定在第一透明基层1和第二透明基层4之间。为了对导光板2、透明液 晶显示面板3和光源5进行保护，还可在第一透明基层1和第二透明基层4之间的边缘制作密封结构，以将导光板2、透明液晶显示面板3和光源5密封在第一透明基层1和第二透明基层4之间。
本公开的实施例提供的显示装置中，在两层透明基层(即第一透明基层1和第二透明基层4)之间设置有透明液晶显示面板3，能够使用环境光作为透明液晶显示面板3的背光源，从而通过透明液晶显示面板3显示例如广告等信息。此外，将第一透明基层1设置成能够通电变色的基层，这样通过对第一透明基层1通电使其变为非透明，第一透明基层1可作为背板，同时，对设置在导光板2周边的光源5通电，也能够通过透明液晶显示面板3显示信息。
也就是说，本公开的实施例提供的显示装置在环境光条件较好时可使用自然光作为背光源进行显示，而在环境光条件较差时可使用光源5作为背光源进行显示，有利于节约能耗。
在一些实施方式中，如图2所示，所述第一透明基层1可包括层叠设置的第一透明基板11和第一电致变色层12。
第一透明基板11可以是玻璃板或者亚克力板。第一电致变色层12可以设置在第一透明基板11的表面，第一电致变色层12可以采用紫荆衍生物类的化合物，这样第一电致变色层12能够在不通电的情况下呈无色状态，即透明的状态，从而在环境光条件较好时，可利用环境光作为背光源使透明液晶显示面板3进行显示。在环境光条件较差的情况下，可以对第一电致变色层12通电，例如可在第一电致变色层12的两个表面分别设置正负电极，然后通过正负电极对第一电致变色层12通电，或者，第一电致变色层12可由层叠设置的第一电极层、电致变色材料层以及第二电极层构成，可以通过第一电极层和第二电极层对夹在中间的电致变色材料层上电，进而第一电致变色层12能够发生颜色的变化而处于不透明的状态，这样第一透明基板11可以作为不透光的背板使用，此时对设置在导光板2周边的光源5通电，也能使透明液晶显示面板3进行显示，用户可从第二透明基层4侧进行观看。
在一些实施方式中，所述第一电致变色层12可设置在所述第一 透明基板11和所述导光板2之间，从而能够对第一电致变色层12进行保护，避免第一电致变色层12被划伤。
本公开的实施例中，所述导光板2的面积可大于或等于所述透明液晶显示面板3的面积。具体地，所述透明液晶显示面板3在导光板2上的正投影(即，沿垂直于导光板2的方向投射的投影)可位于导光板2的表面内。这样，在光源5通电的情况下，可通过导光板2为透明液晶显示面板3提供充足的背光。
在一些实施方式中，第一透明基层1和第二透明基层4的尺寸可大于导光板2的尺寸，从而导光板2和光源5可同层设置在第一透明基层1和第二透明基层4之间，不会增加整个显示装置的厚度，能够使整个显示装置较薄。
本公开的实施例中，所述导光板2可为光学玻璃材质。
光学玻璃材质的导光板2能够保证将为点光源或线光源的光源5转换成面光源的效果，以及能够适应温差大的环境。
本公开的实施例中，光源5可包括一个或多个点光源或线光源，可以根据具体要求进行设置，例如，光源5可包括两个线光源，这两个线光源可设置在导光板2的相对的两侧，这样能够使得经导光板2转换形成的面光源更加均匀。
在一些实施方式中，如图3所示，所述第二透明基层4可包括层叠设置的第二透明基板41和第二电致变色层42。
第二透明基板41可以是玻璃板或者亚克力板。第二透明基层4包括第二电致变色层42能够使显示装置进行双向显示，例如，可以根据显示方向的需要对第一透明基层1中的第一电致变色层12通电，或者对第二透明基层4中的第二电致变色层42通电，进而使显示装置通过第二透明基层4侧显示或者通过第一透明基层2侧显示。第二电致变色层42可以设置在第二透明基板41的表面上，且第二电致变色层42的通电原理或者具体结构可以与第一电致变色层12相同，此处不再赘述。
在一些实施方式中，所述第二电致变色层42可设置在第二透明基板41和所述液晶显示面板3之间，从而能够对所述第二电致变色 层42进行保护，避免所述第二电致变色层42被划伤。
本公开的实施例中，所述显示装置包括显示区和非显示区，所述非显示区位于所述显示区的周围，所述第一透明基层1和所述第二透明基层4的位于所述非显示区的部分设置有遮光层。
所述透明液晶显示面板3的显示区域设置在所述显示装置的显示区，即所述透明液晶显示面板3的显示区域沿垂直于所述显示装置的显示面的方向投射的投影位于所述显示装置的显示区中。所述第一透明基层1和所述第二透明基层4上的遮光层可以采用丝印的方式进行设置，遮光层的设置可对非显示区的结构进行遮挡，能够提升显示装置的美观性。
在一些实施方式中，透明液晶显示面板3、光源5、第一电致变色层12以及第二电致变色层42的通电方式可以参考一般液晶显示面板中各个功能层的通电方式，例如可在特定位置处预留电连接端，然后通过电连接端与外设的电源以及控制器进行连接，外设的电源可以是建筑物中的电源、车载电源、电池等，控制器可以是智能电子设备，例如手机、电脑。
本公开的实施例还提供一种透明窗，其包括本公开的实施例的显示装置。本公开的实施例的显示装置的结构可参见以上参照图1至图3描述的结构，此处不再赘述。
作为示例，本公开的实施例的透明窗可作为车窗、建筑物窗户等，不仅具有传统透明窗的透视功能，同时还具有显示功能。
而且，在环境光条件较好时，本公开的实施例的透明窗可使用自然光作为背光源进行显示，而在环境光条件较差时，本公开的实施例的透明窗可使用光源5作为背光源进行显示，有利于节约能耗。
所描述的实施例仅是本公开的示例实施例，本公开不限于此，在不脱离本公开的构思的情况下，可对所描述的实施例进行各种修改和变型，这些修改和变型也应被视为落入本公开的范围内。

Claims (11)

  1. 一种显示装置，包括：
    第一透明基层，所述第一透明基层能够通电变色而变为非透明；
    依次层叠设置在第一透明基层上的导光板、透明液晶显示面板、第二透明基层；以及
    光源，所述光源位于所述导光板的周边，配置为响应于所述第一透明基层变为非透明而通过所述导光板为所述透明液晶显示面板提供背光。
  2. 根据权利要求1所述的显示装置，其中，
    所述第一透明基层包括层叠设置的第一透明基板和第一电致变色层。
  3. 根据权利要求2所述的显示装置，其中，
    所述第一电致变色层设置在所述第一透明基板和所述导光板之间。
  4. 根据权利要求2所述的显示装置，其中，
    所述第一电致变色层包括层叠设置的第一电极层、电致变色材料层以及第二电极层。
  5. 根据权利要求1所述的显示装置，其中，
    所述光源与所述导光板同层设置，且位于所述第一透明基层和所述第二透明基层之间。
  6. 根据权利要求1所述的显示装置，其中，
    所述光源包括两个点光源或线光源，所述两个点光源或线光源设置在所述导光板的相对两侧。
  7. 根据权利要求1-6中任一项所述的显示装置，其中，
    所述第二透明基层包括层叠设置的第二透明基板和第二电致变色层。
  8. 根据权利要求7所述的显示装置，其中，
    所述第二电致变色层设置在第二透明基板和所述透明液晶显示面板之间。
  9. 根据权利要求1所述的显示装置，其中，
    所述显示装置具有显示区和非显示区，所述非显示区位于所述显示区的一周；
    所述显示装置还包括遮光层，所述遮光层设置于所述第一透明基层和所述第二透明基层的位于所述非显示区的部分。
  10. 根据权利要求1所述的显示装置，其中，
    所述导光板、所述透明液晶显示面板、所述光源被密封夹设在所述第一透明基层和所述第二透明基层之间。
  11. 一种透明窗，包括：
    根据权利要求1-10中任一项所述的显示装置。
PCT/CN2020/075988 2019-04-17 2020-02-20 显示装置及透明窗 WO2020211521A1 (zh)

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