WO2019223545A1 - 透明液晶显示装置及其显示方法 - Google Patents

透明液晶显示装置及其显示方法 Download PDF

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Publication number
WO2019223545A1
WO2019223545A1 PCT/CN2019/086244 CN2019086244W WO2019223545A1 WO 2019223545 A1 WO2019223545 A1 WO 2019223545A1 CN 2019086244 W CN2019086244 W CN 2019086244W WO 2019223545 A1 WO2019223545 A1 WO 2019223545A1
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Prior art keywords
liquid crystal
transparent
display device
crystal display
ultraviolet light
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PCT/CN2019/086244
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English (en)
French (fr)
Inventor
马新利
陈小川
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/652,522 priority Critical patent/US11237433B2/en
Publication of WO2019223545A1 publication Critical patent/WO2019223545A1/zh

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    • 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 
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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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements
    • G02F2201/501—Blocking layers, e.g. against migration of ions
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/58—Arrangements comprising a monitoring photodetector
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/05—Function characteristic wavelength dependent

Definitions

  • Embodiments of the present disclosure relate to a transparent liquid crystal display device and a display method thereof.
  • Transparent liquid crystal display devices can not only enable users to see the content on the transparent display screen, but also allow users to see the objects behind the transparent display screen, thereby bringing A new kind of human-computer interaction experience.
  • the transparent liquid crystal display device can display with the help of ambient light, and when the ambient light is weak, the brightness of the display screen will correspondingly decrease, so the brightness of the display screen needs to be increased.
  • an embodiment of the present disclosure discloses a transparent liquid crystal display device, including: a transparent liquid crystal display panel, the transparent liquid crystal display panel including a color film substrate; and a transparent backlight module disposed on a non-display of the transparent display panel.
  • the display side includes: a transparent light guide plate; and an ultraviolet light source disposed at a side end of the transparent light guide plate, wherein the color filter substrate includes colored resin layers having different colors, and the colored resin layers of different colors are correspondingly mixed respectively. There are fluorescent materials that can be excited to emit a corresponding color.
  • the transparent liquid crystal display device further includes: a detector configured to detect ambient light; and a controller configured to control according to a detection result of the detector
  • the ultraviolet light source is turned on and off, wherein the ultraviolet light source is configured to be turned on when the intensity of the ambient light is lower than a preset value, and the transparent light guide plate is configured to guide ultraviolet light emitted by the ultraviolet light source to all
  • the color resin layer excites the fluorescent material to emit light to assist the transparent liquid crystal display device to display when the intensity of ambient light is lower than a preset value.
  • the transparent liquid crystal display device further includes a cholesteric liquid crystal cell, and the cholesteric liquid crystal cell is located between the transparent backlight module and the transparent
  • the pitch of the cholesteric liquid crystal molecules in the cholesteric liquid crystal cell has a linear relationship with the wavelength of the ultraviolet light source;
  • the cholesteric liquid crystal cell is configured to convert the ultraviolet light emitted by the ultraviolet light source The circularly polarized ultraviolet light in the light that is the same as the rotation direction of the cholesteric liquid crystal molecules is reflected to the color resin layer to excite the fluorescent material to emit light, so as to assist the transparent liquid crystal display device in that the intensity of ambient light is lower than the Displayed when setting.
  • the cholesteric liquid crystal cell includes: an upper substrate and a lower substrate facing each other, wherein the cholesteric liquid crystal molecules are sandwiched between the upper substrate and the lower substrate. Between the substrate and the lower substrate.
  • the color film substrate further includes a water vapor barrier film, and the water vapor barrier film is located on a non-display side of the color resin layer.
  • the color filter substrate further includes a substrate, the color resin layer is disposed on a non-display side of the substrate, a built-in polarizer, and the built-in polarized light The sheet is located on the non-display side of the color resin layer.
  • the transparent liquid crystal display panel includes: a column substrate opposite to the color filter substrate; and a first polarizer disposed in an orientation of the array substrate One side of the transparent backlight module.
  • the color film substrate further includes a water vapor barrier film, and the water vapor barrier film is disposed between the color resin layer and the built-in polarizer.
  • the transparent liquid crystal display device further includes a frame having a light passing hole, wherein the detector and the controller are disposed in the frame, so that The detector is located on an optical path of the light-passing hole, and the controller is connected between the ultraviolet light source and the detector.
  • the transparent light guide plate is a nano light guide plate or a glass light guide plate.
  • the color filter substrate further includes: a substrate, the color resin layer is disposed on a non-display side of the substrate, and a second polarizer is disposed on the substrate. The side of the substrate opposite to the color resin layer.
  • the built-in polarizer is a coating-type polarizer and includes a mixed material of a dichroic dye and a reactive monomer.
  • an embodiment of the present disclosure provides a display method of a transparent liquid crystal display device according to any one of the first aspects, comprising: when an intensity of ambient light is lower than a preset, turning on the ultraviolet light source, so that the ultraviolet The light emitted from the light source excites the fluorescent material in the colored resin layer to emit light with the same color as the colored resin layer.
  • the display method of the transparent liquid crystal display device provided by the embodiment of the present disclosure further includes: turning off the ultraviolet light source when the intensity of the ambient light is greater than or equal to a preset value.
  • the transparent liquid crystal display device further includes: a detector configured to detect the intensity of the ambient light; and a controller configured to be based on the The detection result of the detector controls the on and off of the ultraviolet light source
  • the display method further includes: the detector detects the intensity of the ambient light; provides the detection result to the controller; and the controller compares the The detection result and a preset value. When the intensity of the ambient light is lower than the preset value, the controller turns on the ultraviolet light source.
  • turning on the ultraviolet light source includes: manually turning on the ultraviolet light source by a user.
  • FIG. 1 is a schematic structural diagram of a transparent liquid crystal display device in an embodiment of the present disclosure
  • FIG. 2 shows a schematic structural diagram of a cholesteric liquid crystal cell in an embodiment of the present disclosure.
  • 10-transparent display panel 20-transparent backlight module, 30-detector, 40-controller, 50-cholesteric liquid crystal cell, 100-array substrate, 200-liquid crystal layer, 300-color film substrate, 101-section A polarizer, 210-liquid crystal molecules, 301-first glass substrate, 302-black matrix, 303-color resin layer, 304-built-in polarizer, 305-water vapor barrier film, 201-transparent light guide plate, 202-ultraviolet light source, 501-second glass substrate, 502-cholesteric liquid crystal layer, 503-third glass substrate, 5021-cholesteric liquid crystal molecules.
  • a visible light source can be provided on the side of the transparent display panel away from the display area, and the visible light is guided to the transparent display panel through the transparent light guide plate, so that the transparent liquid crystal The display panel provides enough light to increase the screen brightness.
  • the transparent light guide plate will reflect visible light onto the transparent display panel, so that the transparent light guide plate will have a bright reflective surface. In this way, the transparency of the transparent liquid crystal display device during the display process will be reduced, thereby reducing Transparent display effect of transparent liquid crystal display device.
  • An embodiment of the present disclosure provides a transparent liquid crystal display device, including: a transparent liquid crystal display panel, the transparent liquid crystal display panel including a color film substrate; a transparent backlight module disposed on a non-display side of the transparent display panel, including: A transparent light guide plate; and an ultraviolet light source disposed at a side end of the transparent light guide plate, wherein the color filter substrate includes a color resin layer having different colors, and the color resin layers of the different colors are respectively mixed with an excitable mixture to emit light. Corresponding colors of fluorescent materials.
  • the transparent liquid crystal display device may include a transparent display panel 10 and a transparent backlight module 20.
  • the transparent display panel 10 may include an array substrate 100, a liquid crystal layer 200, and a color filter substrate 300.
  • the transparent backlight module 20 may include a transparent light guide plate 201 and an ultraviolet light source 202 disposed at a side end of the transparent light guide plate 201.
  • a side of the array substrate 100 away from the liquid crystal layer 200 is provided with a first polarizer 101, and the first polarizer 101 may be used to modulate the light directed to the liquid crystal layer 200 into linearly polarized light.
  • the liquid crystal layer 200 is located between the array substrate 100 and the color filter substrate 300.
  • the liquid crystal molecules 210 in the liquid crystal layer 200 can be deflected when the power is applied, so that the transparent display panel 10 can perform transparent display by the deflection of the liquid crystal molecules 210.
  • the color filter substrate 300 may include a substrate, for example, a first transparent substrate, for example, a first glass substrate 301, a black matrix 302 formed on the first glass substrate 301, and a first glass substrate 301 on which the black matrix 302 is formed
  • the colored resin layers 303 of different colors are formed.
  • the color resin layer 303 may be a column arrangement, an array arrangement, or the like. The embodiment of the present disclosure does not specifically limit the arrangement manner of the color resin layers 303.
  • the color film substrate 300 is provided with colored resin layers 303 of different colors, that is, color filter layers.
  • the colored resin layers 303 of different colors are respectively mixed with fluorescent materials that can emit corresponding colors. Each fluorescent material is in ultraviolet light. Under the excitation of, it can emit light with the same color as the colored resin layer.
  • the colored resin layers 303 of different colors may include multiple R resin units, multiple G resin units, and multiple B resin units, among which multiple R resin units
  • the red fluorescent material is mixed in the resin unit
  • the green fluorescent material is mixed in the multiple G resin units
  • the blue fluorescent material is mixed in the multiple B resin units, so that the red fluorescent material can emit under the excitation of ultraviolet light.
  • the red light with the same color as the R resin unit.
  • the green fluorescent material can emit green light with the same color as the G resin unit under the excitation of ultraviolet light.
  • the blue fluorescent material can emit the same light with the excitation of ultraviolet light.
  • the corresponding B resin unit has the same blue light.
  • the color filter substrate 300 may further include a second polarizer (not shown in FIG. 1), and the second polarizer may be located on a side of the color filter substrate 300 away from the liquid crystal layer 200 in the transparent display panel 10. That is, it is located on the first glass substrate 301 side where the color resin layer 303 is not provided.
  • the color film substrate 300 may further include a built-in polarizer 304, and the built-in polarizer 304 may The side of the substrate 301 facing the liquid crystal layer 200 in the transparent display panel 10, that is, the built-in polarizer 304 can be formed on the outside of the color resin layer 303.
  • the ultraviolet light can be emitted to the color resin layer 303 after polarized light modulation, so that the fluorescent material in the color resin layer 303 can be excited to emit light.
  • the built-in polarizer 304 is disposed on a side of the color filter substrate 300 near the liquid crystal layer 200 so that when the built-in polarizer 304 and the first polarizer 101 are matched, polarization modulation can be achieved before the light reaches the color resin layer 303. Since the built-in polarizer 304 and the first polarizer 101 can completely shut off the light before the colored resin layer 303, when the fluorescent material in the colored resin layer 303 cannot receive the modulated light, it naturally cannot excite a difference The light in the polarization direction can prevent the stray light from the fluorescent material from leaking out of the screen when the light needs to be completely turned off.
  • the color film substrate 300 may further include a water vapor barrier film 305.
  • the water vapor barrier film 305 may be located on a side of the color resin layer 303 near the liquid crystal layer 200 in the transparent display panel 10.
  • the water vapor barrier film 305 may include the color resin layer 303 and the color
  • the fluorescent material mixed in the resin layer 303 is isolated from the external water vapor, thereby preventing the fluorescent material in the color resin layer 303 from being corroded by the external water vapor, so as to extend the luminous life of the fluorescent material.
  • the built-in polarizer 304 may be a coating-type polarizer, including an alignment layer and a polarizing layer.
  • the coating-type built-in polarizer 304 can be formed by curing a mixed material of a dichroic dye and a reactive monomer.
  • a black matrix 302 and a colored resin layer 303 of different colors can be formed on the first glass substrate 301, and then a water vapor barrier film 305 can be formed on the color resin layer 303, and the water vapor barrier film
  • An OC (Over Coat, protective layer) is formed on 305, such as a PET (polyethylene terephthalate) layer, etc., and an alignment layer can be formed on the OC by using polyimide, and the alignment layer can be further formed on the OC.
  • the mixed material of the dichroic dye and the reactive monomer is coated and the mixed material is cured to form a coating-type built-in polarizer 304.
  • the alignment layer in the built-in polarizer 304 can fix the orientation of the reactive monomer molecules, so that the reactive monomer molecules can drive the dichroic dye molecules to form a fixed orientation, thereby realizing the polarization characteristics of the built-in polarizer.
  • the built-in polarizer 304 may also be a metal grating, which is not specifically limited in the embodiments of the present disclosure.
  • two sides of the liquid crystal layer 200 are respectively provided with alignment films, and the two alignment films can be used to fix the alignment of the liquid crystal molecules 210 in the liquid crystal layer 200.
  • the UV light source 202 can be a UV light bar in practical applications.
  • the UV light source 202 can be configured to be turned on when the ambient light is lower than a preset value, that is, turned on when the ambient light is dark.
  • the UV light source 202 can be emitted when turned on. UV light.
  • the transparent light guide plate 201 may be configured to guide the ultraviolet light emitted from the ultraviolet light source 202 to the color resin layer 303 to excite the fluorescent material to emit light, so as to assist the transparent liquid crystal display device to display when the ambient light is lower than a preset value.
  • the transparent light guide plate 201 may be a nano light guide plate or a glass light guide plate. Since the nano light guide plate or the glass light guide plate has high light transmittance and low reflectance, the transparency of the transparent liquid crystal display device can be improved.
  • the transparent liquid crystal display device of the embodiment of the present disclosure may further include: a detector configured to detect ambient light; and a controller configured to control the on and off of the ultraviolet light source according to a detection result of the detector, wherein the The ultraviolet light source is configured to be turned on when the intensity of the ambient light is lower than a preset value, and the transparent light guide plate is configured to guide ultraviolet light emitted by the ultraviolet light source to the color resin layer to excite the fluorescent material to emit light, Assisting the transparent liquid crystal display device to display when the intensity of ambient light is lower than a preset value.
  • the transparent liquid crystal display device may further include a frame (not shown in FIG. 1) having a light passing hole, and a detector 30 and a controller 40 provided inside the frame.
  • the bezel can be used to fix and block non-transparent devices in the transparent liquid crystal display device.
  • the transparent display panel 10 and the transparent backlight module 20 can be embedded in the bezel.
  • the detector 30 and the controller 40 can be disposed inside the bezel for reliable fixing.
  • the detector 30 may be located on the optical path of the light-through hole, and the detector 30 may be configured to detect ambient light when turned on. In practical applications, the detector 30 may detect the ambient light through the light-through hole.
  • the detector 30 can accurately detect, for example, the light intensity of ambient light around the transparent display panel 10.
  • the detector is a light detector, such as a photo sensor, such as a photodiode.
  • the controller 40 may be connected between the ultraviolet light source 202 and the detector 30.
  • the controller 40 may be configured to control the ultraviolet light source 202 to be turned on when it is determined that the ambient light detected by the detector 30 is lower than a preset value, that is, when the transparency is transparent When the ambient light around the liquid crystal display device is dark, the controller 40 can control the ultraviolet light source 202 to be turned on.
  • the transparent light guide plate 201 can guide the ultraviolet light emitted by the ultraviolet light source 202 to the color resin layer 303 to excite the fluorescent material. Light is emitted, thereby supplementing the light required for display by the transparent liquid crystal display device. Since the ultraviolet light is not visible, the transparent light guide plate in the transparent liquid crystal display device will not produce a bright reflective surface, thereby improving the transparency of the transparent liquid crystal display device during the transparent display process.
  • the controller 40 may be further configured to control the ultraviolet light source 202 to be turned off when it is determined that the ambient light detected by the detector 30 is higher than or equal to a preset value, that is, when the ambient light around the transparent liquid crystal display device is bright, The controller 40 can control the ultraviolet light source 202 to be turned off, so that the transparent liquid crystal display device can display only by ambient light. Since the ultraviolet light source 202 does not need to be turned on when the ambient light is bright, the energy consumption of the transparent liquid crystal display device can be reduced.
  • the on state of the ultraviolet light source 202 can also be manually controlled by the user, that is, when the user thinks that the ambient light is insufficient, the ultraviolet light source 202 can be manually turned on, thereby improving the screen brightness during transparent display.
  • the embodiment does not specifically limit this.
  • the user can determine whether the UV light source can be turned on or off based on his own feelings.
  • the user can manually turn on the UV light source, or the user can The ultraviolet light source is manually turned on or off according to the intensity of the ambient light detected by the detector.
  • the detection result of the detector can be displayed on the screen or displayed on the corresponding application and provided to the user.
  • the embodiments of the present disclosure do not do this. limit.
  • the transparent liquid crystal display device may further include a cholesteric liquid crystal cell 50.
  • the cholesteric liquid crystal cell may be located outside the transparent backlight module 20, that is, the cholesteric liquid crystal cell is disposed away from the liquid crystal layer 200 One side.
  • FIG. 2 shows a schematic structural diagram of a cholesteric liquid crystal cell 50. Referring to FIG.
  • the cholesteric liquid crystal cell 50 may include a second transparent substrate, such as a second glass substrate 501, a cholesteric liquid crystal layer 502, and a third A transparent substrate, such as a third glass substrate 503, wherein the cholesteric liquid crystal layer 502 is located between the second glass substrate 501 and the third glass substrate 503, and the second glass substrate 501 of the cholesteric liquid crystal cell 50 can be connected with a transparent backlight
  • the transparent light guide plate 201 in the module 20 is bonded.
  • the cholesteric liquid crystal layer 502 includes cholesteric liquid crystal molecules 5021.
  • the alignment direction of the cholesteric liquid crystal molecules 5021 can be adjusted by adding a chiral agent, light excitation, etc., thereby adjusting the pitch of the cholesteric liquid crystal.
  • the substrate 501 and the third glass substrate 503 do not need to perform electric field control.
  • the pitch of the cholesteric liquid crystal in the cholesteric liquid crystal cell 50 has a linear relationship with the wavelength of the ultraviolet light source 202. Specifically, the pitch of the cholesteric liquid crystal and the wavelength of the ultraviolet light source 202 can satisfy the following linear relationship (1):
  • ⁇ is the wavelength of the ultraviolet light source 202
  • n is the average refractive index of the cholesteric liquid crystal
  • p is the pitch of the cholesteric liquid crystal.
  • the cholesteric liquid crystal cell 50 may be configured to reflect the circularly polarized ultraviolet light in the same direction as the rotation direction of the cholesteric liquid crystal from the ultraviolet light emitted from the ultraviolet light source 202, and reflect the circularly polarized ultraviolet light to the color resin layer 303 to excite the fluorescent material to emit light to assist the transparent liquid crystal display device. Displayed when the ambient light is below the preset value.
  • the transparent light guide plate 201 guides ultraviolet light to the transparent display panel 10
  • part of the ultraviolet light will be emitted to the outside of the transparent backlight module 20 due to the refraction and reflection of the device, and the transparent light guide plate 201 will be installed on the transparent backlight
  • the cholesteric liquid crystal cell 50 on the outside of the module 20 can reflect the circularly polarized ultraviolet light in the same direction as the rotation direction of the cholesteric liquid crystal in the ultraviolet light due to its own optical characteristics, so that the circularly polarized ultraviolet light can be reflected back.
  • the fluorescent material can be excited to emit light.
  • the cholesteric liquid crystal layer 502 can reflect right-handed circularly polarized ultraviolet light.
  • the cholesteric liquid crystal cell can reflect part of the ultraviolet light back to the colored resin layer to excite the fluorescent material to emit light. Therefore, the utilization rate of the ultraviolet light can be improved, and the brightness of the screen when the transparent liquid crystal display device performs transparent display can be further improved.
  • the cholesteric liquid crystal cell 50 reflects circularly polarized ultraviolet light while the pitch of the cholesteric liquid crystal and the wavelength of visible light in ambient light do not satisfy the above-mentioned linear relationship (1). Visible light in ambient light can pass through the cholesteric liquid crystal cell 50 to reach the transparent display panel 10 without being reflected by the cholesteric liquid crystal cell 50. Therefore, while the cholesteric liquid crystal cell 50 improves the utilization of ultraviolet light, It can also ensure the utilization of visible light in ambient light.
  • the cholesteric liquid crystal layer 502 may be provided with alignment films on both sides thereof, and the two alignment films may be used to fix the orientation of the cholesteric liquid crystal molecules 5021 in the cholesteric liquid crystal layer 502.
  • both of the alignment films disposed on both sides of the cholesteric liquid crystal layer 502 may adopt a frictionless orientation along the surface, so that the cholesteric liquid crystal molecules 5021 may be randomly arranged along the surface.
  • the transparent liquid crystal display device that fills the display window, that is, a display window with an additional light source is provided behind the transparent liquid crystal display device
  • the transparent liquid crystal display device provided in the embodiment of the present disclosure can excite the The fluorescent material emits light, thereby assisting the transparent liquid crystal display device to display when the ambient light is dark, so that the transparent liquid crystal display device can get rid of the display mode of the fill light window.
  • the transparent display panel 10 can be a TN (Twisted Nematic) transparent display panel, an ADS (Advanced Super Dimension Switch) transparent display panel, and a VA (Vertical Alignment) transparent display panel. Any of the display panels is not specifically limited in the embodiments of the present disclosure.
  • the colored resin layers of different colors on the color film substrate are correspondingly mixed with fluorescent materials that can be excited to emit the color of the colored resin layer, and each fluorescent material is in ultraviolet light. Under excitation, it can emit the same light as the colored resin layer.
  • the fluorescent material can be irradiated with ultraviolet light provided by the backlight module. The light excited by the fluorescent material supplements the lack of ambient light, thereby improving the Screen brightness during transparent display.
  • the ultraviolet light is not visible, the light guide plate in the transparent liquid crystal display device will not produce a bright reflective surface, so that while improving the screen brightness, the transparency of the transparent liquid crystal display device during the transparent display process can be improved.
  • the cholesteric liquid crystal cell located on the outside of the transparent backlight module can reflect a portion of the ultraviolet light that is not directed to the transparent display panel back to the transparent display panel, thereby exciting the fluorescent material in the color resin layer to emit light.
  • the ultraviolet light can be increased Utilization rate, thereby further improving the screen brightness during transparent display.
  • An embodiment of the present disclosure also provides a display method of a transparent liquid crystal display device as described above, including: when the intensity of ambient light is lower than a preset value, turning on the ultraviolet light source, so that the light emitted by the ultraviolet light source The fluorescent material in the colored resin layer is excited to emit light of the same color as the colored resin layer.
  • the display method of the transparent liquid crystal display device further includes: turning off the ultraviolet light source when the intensity of the ambient light is greater than or equal to a preset value.
  • the transparent liquid crystal display device further includes: a detector configured to detect the intensity of the ambient light; and a controller configured to control the according to a detection result of the detector.
  • the display method further includes turning on and off the ultraviolet light source: the detector detects the intensity of the ambient light; providing a detection result to the controller; the controller compares the detection result with a preset value, and When the intensity of the ambient light is lower than a preset value, the controller turns on the ultraviolet light source.
  • turning on the ultraviolet light source includes: manually turning on the ultraviolet light source by a user.
  • the embodiments of the present disclosure include the following advantages:
  • color resin layers of different colors on the color film substrate are respectively mixed with fluorescent materials that can emit corresponding colors, and each fluorescent material is excited by ultraviolet light. It can emit light with the same color as the colored resin layer, so when the ambient light is dark, when the fluorescent material is illuminated by the ultraviolet light provided by the backlight module, the light excited by the fluorescent material supplements the lack of ambient light, thereby improving the transparent display. Screen brightness at. At the same time, because the ultraviolet light is not visible, the light guide plate in the transparent liquid crystal display device will not produce a bright reflective surface, so that while improving the screen brightness, the transparency of the transparent liquid crystal display device during the transparent display process can be improved.
  • the transparent liquid crystal display device provided by the embodiments of the present disclosure has been described in detail above. Specific examples are used herein to explain the principles and implementation of the embodiments of the present disclosure. The description of the above embodiments is only for Helps to understand the methods and core ideas of the embodiments of the present disclosure; at the same time, for those of ordinary skill in the art, according to the ideas of the embodiments of the present disclosure, there will be changes in the specific implementation and application scope. To sum up As mentioned, the content of this specification should not be construed as a limitation on the embodiments of the present disclosure.

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Abstract

一种透明液晶显示装置及其显示方法，其中，透明液晶显示装置包括透明显示面板(10)以及透明背光模组(20)，透明显示面板(10)包括彩膜基板(300)；透明背光模组(20)设置在透明显示面板(10)的非显示侧且包括透明导光板(201)以及紫外光源(202)，紫外光源(202)设置在透明导光板(201)侧端，彩膜基板(300)包括具有不同颜色的彩色树脂层(303)，不同颜色的彩色树脂层(303)中分别混合有可激发而发出对应颜色的荧光材料。通过紫外光激发荧光材料发出的光线补充环境光线的不足，提高画面亮度，由于紫外光不可见，因此透明液晶显示装置的导光板将不会产生高亮反光面，能够提高透明显示时的透明度。

Description

透明液晶显示装置及其显示方法 技术领域
本公开的实施例涉及一种透明液晶显示装置及其显示方法。
背景技术
随着显示技术的快速发展，透明液晶显示技术逐渐引起人们的关注，透明液晶显示装置不仅可以使用户看到透明显示屏上的内容，还可以使用户看到透明显示屏背后的物体，从而带来一种全新的人机交互体验。
透明液晶显示装置可以借助环境光线进行显示，而当环境光线较弱时，显示画面的亮度也会相应降低，因此需要提高显示画面的亮度。
发明内容
第一方面，本公开的实施例公开了一种透明液晶显示装置，包括：透明液晶显示面板，所述透明液晶显示面板包括彩膜基板；透明背光模组，设置在所述透明显示面板的非显示侧，包括：透明导光板；以及紫外光源，设置在所述透明导光板侧端，其中所述彩膜基板包括具有不同颜色的彩色树脂层，所述不同颜色的彩色树脂层中分别对应混合有可激发而发出对应颜色的荧光材料。
可选地，在本公开实施例提供的透明液晶显示装置中，所述透明液晶显示装置还包括：检测器，构造为检测环境光线；以及控制器，构造为根据所述检测器的检测结果控制所述紫外光源的开启与关闭，其中所述紫外光源配置为在所述环境光线的强度低于预设值时被开启，所述透明导光板配置为将所述紫外光源发出的紫外光导到所述彩色树脂层激发所述荧光材料发光，以辅助所述透明液晶显示装置在环境光线的强度低于预设值时显示。
可选地，在本公开实施例提供的透明液晶显示装置中，所述透明液晶显示装置还包括：胆甾相液晶盒，所述胆甾相液晶盒位于所述透明背光模组与所述透明显示面板相反的一侧，所述胆甾相液晶盒中胆甾相液晶分子的螺距与所述紫外光源的波长呈线性关系；所述胆甾相液晶盒配置为将所述紫外光源发出的紫外光中与所述胆甾相液晶分子的旋转方向相同的圆偏紫外光，反射到所述彩色树脂层激发所述荧光材料发光，以辅助所述透明液晶显示装置 在环境光线的强度低于预设值时显示。
可选地，在本公开实施例提供的透明液晶显示装置中，所述胆甾相液晶盒中胆甾相液晶分子的螺距p跟所述紫外光源所发出的光的波长λ的关系满足：λ＝np，其中n为所述胆甾相液晶的平均折射率。
可选地，在本公开实施例提供的透明液晶显示装置中，所述胆甾相液晶盒包括：彼此对盒的上基板和下基板，其中所述胆甾相液晶分子夹设在所述上基板和所述下基板之间。
可选地，在本公开实施例提供的透明液晶显示装置中，所述彩膜基板还包括：水汽阻隔膜，所述水汽阻隔膜位于所述彩色树脂层的非显示侧。
可选地，在本公开实施例提供的透明液晶显示装置中，所述彩膜基板还包括：基底，所述彩色树脂层设置在所述基底的非显示侧，内置偏光片，所述内置偏光片位于所述彩色树脂层的非显示侧。
可选地，在本公开实施例提供的透明液晶显示装置中，所述透明液晶显示面板包括：列基板，与所述彩膜基板对置；第一偏光片，设置在所述阵列基板的朝向所述透明背光模组的一侧。
可选地，在本公开实施例提供的透明液晶显示装置中，所述彩膜基板还包括：水汽阻隔膜，所述水汽阻隔膜设置在所述彩色树脂层与所述内置偏光片之间。
可选地，在本公开实施例提供的透明液晶显示装置中，所述透明液晶显示装置还包括具有通光孔的边框，其中所述检测器和所述控制器设置在所述边框内，所述检测器位于所述通光孔的光路上，所述控制器连接在所述紫外光源和所述检测器之间。
可选地，在本公开实施例提供的透明液晶显示装置中，所述透明导光板为纳米导光板或玻璃导光板。
可选地，在本公开实施例提供的透明液晶显示装置中，所述彩膜基板还包括：基底，所述彩色树脂层设置在所述基底的非显示侧，第二偏光片，设置在所述基底的与所述彩色树脂层相反的一侧。
可选地，在本公开实施例提供的透明液晶显示装置中，所述内置偏光片为涂布型偏光片，包括二色性染料和反应单体的混合材料。
第二方面，本公开的实施例提供一种根据第一方面任意所述的透明液晶显示装置的显示方法包括：当环境光线的强度低于预设时，开启所述紫外光 源，从而所述紫外光源发出的光激发所述彩色树脂层中的荧光材料而发出与所在彩色树脂层颜色相同的光。
可选地，本公开实施例提供的透明液晶显示装置的显示方法，还包括：当环境光线的强度大于或等于预设值时，关闭所述紫外光源。
可选地，在本公开实施例提供的透明液晶显示装置的显示方法中，所述透明液晶显示装置还包括：检测器，构造为检测所述环境光线的强度；控制器，构造为根据所述检测器的检测结果控制所述紫外光源的开启与关闭，所述显示方法还包括：所述检测器检测所述环境光线的强度；提供检测结果到所述控制器；所述控制器比较所述检测结果与预设值，当环境光线的强度低于预设值时，所述控制器开启所述紫外光源。
可选地，在本公开实施例提供的透明液晶显示装置的显示方法中，当环境光线的强度低于预设值时，开启所述紫外光源包括：用户手动开启所述紫外光源。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1示出了本公开的实施例中的一种透明液晶显示装置的结构示意图；
图2示出了本公开的实施例中的一种胆甾相液晶盒的结构示意图。
附图标记说明：
10-透明显示面板，20-透明背光模组，30-检测器，40-控制器，50-胆甾相液晶盒，100-阵列基板，200-液晶层，300-彩膜基板，101-第一偏光片，210-液晶分子，301-第一玻璃基板，302-黑矩阵，303-彩色树脂层，304-内置偏光片，305-水汽阻隔膜，201-透明导光板，202-紫外光源，501-第二玻璃基板，502-胆甾相液晶层，503-第三玻璃基板，5021-胆甾相液晶分子。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描 述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
为了提高透明液晶显示装置在弱环境光线下的显示效果，可以在透明显示面板远离显示区域一侧的侧端设置可见光光源，并通过透明导光板将可见光导到透明显示面板上，从而为透明液晶显示面板提供足够的光线，以提高画面亮度。
然而，在透明显示过程中，透明导光板会将可见光反射到透明显示面板上，从而透明导光板将产生高亮的反光面，如此，会降低透明液晶显示装置在显示过程中的透明度，从而降低透明液晶显示装置的透明显示效果。
为使本公开的实施例的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本公开的实施例作进一步详细的说明。
实施例一
本公开的实施例提供一种透明液晶显示装置，包括：透明液晶显示面板，所述透明液晶显示面板包括彩膜基板；透明背光模组，设置在所述透明显示面板的非显示侧，包括：透明导光板；以及紫外光源，设置在所述透明导光板侧端，其中所述彩膜基板包括具有不同颜色的彩色树脂层，所述不同颜色的彩色树脂层中分别对应混合有可激发而发出对应颜色的荧光材料。
参照图1，示出了本公开的实施例一的一种透明液晶显示装置的结构示意图。该透明液晶显示装置可以包括透明显示面板10和透明背光模组20。参照图1，透明显示面板10可以包括阵列基板100、液晶层200和彩膜基板300。透明背光模组20可以包括透明导光板201以及设置在透明导光板201 侧端的紫外光源202。
例如，阵列基板100远离液晶层200的一侧设置有第一偏光片101，第一偏光片101可以用于将射向液晶层200的光线调制为线偏振光。
例如，液晶层200位于阵列基板100和彩膜基板300之间，液晶层200中的液晶分子210在通电时可以偏转，从而透明显示面板10可以通过液晶分子210的偏转进行透明显示。
彩膜基板300可以包括基底，例如，第一透明基板，例如，第一玻璃基板301，在第一玻璃基板301上形成的黑矩阵302，以及在形成有黑矩阵302的第一玻璃基板301上形成的不同颜色的彩色树脂层303。其中，彩色树脂层303可以是列排布、阵列排布等等，本公开的实施例对于彩色树脂层303的排布方式不作具体限定。彩膜基板300上设置有不同颜色的彩色树脂层303，也就是，滤色器层，不同颜色的彩色树脂层303中分别对应混合有可发出对应颜色的荧光材料，每种荧光材料在紫外光的激发下，可以发出与所属彩色树脂层颜色相同的光线。
对于RGB(Red，Green，Blue，红绿蓝)透明液晶显示装置，不同颜色的彩色树脂层303可以包括多个R树脂单元、多个G树脂单元和多个B树脂单元，其中，多个R树脂单元中均混合有红色荧光材料，多个G树脂单元中均混合有绿色荧光材料，多个B树脂单元中均混合有蓝色荧光材料，从而红色荧光材料在紫外光的激发下，可以发出与所属的R树脂单元颜色相同的红色光线，绿色荧光材料在紫外光的激发下，可以发出与所属的G树脂单元颜色相同的绿色光线，蓝色荧光材料在紫外光的激发下，可以发出与所属的B树脂单元颜色相同的蓝色光线。
在一种实现方式中，彩膜基板300还可以包括第二偏光片(图1中未示出)，第二偏光片可以位于彩膜基板300远离透明显示面板10中的液晶层200的一侧，也即是位于第一玻璃基板301未设置彩色树脂层303的一侧。
参照图1，在另一种备选的实现方式中，除第一玻璃基板301、黑矩阵302和彩色树脂层303之外，彩膜基板300还可以包括内置偏光片304，内置偏光片304可以位于基底301的面对透明显示面板10中的液晶层200的一侧，也即是可以在彩色树脂层303的外侧形成内置偏光片304。在实际应用中，紫外光经过偏光调制后可以出射至彩色树脂层303，从而可以激发彩色树脂层303中的荧光材料发光。将内置偏光片304设置在彩膜基板300靠近液晶 层200的一侧，从而内置偏光片304与第一偏光片101进行配合时，可以在光线未到达彩色树脂层303之前实现偏光调制。由于在彩色树脂层303之前，内置偏光片304与第一偏光片101配合可以实现光线的完全关断，因此，彩色树脂层303中的荧光材料无法接收到调制光线时，自然也无法激发出不同偏振方向的光线，从而在需要完全关断光线时，能够避免荧光材料发出的杂光漏出屏幕。
另外，彩膜基板300还可以包括水汽阻隔膜305，水汽阻隔膜305可以位于彩色树脂层303靠近透明显示面板10中的液晶层200的一侧，水汽阻隔膜305可以将彩色树脂层303以及彩色树脂层303中混合的荧光材料与外界的水汽隔离，从而避免彩色树脂层303中的荧光材料被外界的水汽腐蚀，以延长荧光材料的发光寿命。
在实际应用中，内置偏光片304可以为涂布型偏光片，包括取向层和偏光层。其中，涂布型的内置偏光片304可以由二色性染料和反应单体的混合材料固化形成。在制造透明液晶显示装置时，首先可以在第一玻璃基板301上形成黑矩阵302，以及不同颜色的彩色树脂层303，然后可以在彩色树脂层303上形成水汽阻隔膜305，并在水汽阻隔膜305上形成OC(Over Coat，保护层)，如PET(聚对苯二甲酸乙二醇酯)层等等，进而可以利用聚酰亚胺在OC上形成取向层，进而可以在该取向层上涂覆二色性染料和反应单体的混合材料，并对混合材料进行固化，从而可以形成涂布型的内置偏光片304。其中，内置偏光片304中的取向层可以固定反应单体分子的取向，从而反应单体分子可以带动二色性染料分子形成固定取向，实现内置偏光片的偏光特性。
当然，在实际应用中，内置偏光片304还可以为金属光栅，本公开的实施例对此不作具体限定。
另外，在实际应用中，液晶层200的两侧分别设置有取向膜，这两层取向膜可以用于固定液晶层200中液晶分子210的取向。
紫外光源202在实际应用中可以为一紫外灯条，紫外光源202可以配置为在环境光线低于预设值时开启，也即是在环境光线较暗时开启，紫外光源202在开启时可以发出紫外光。透明导光板201可以配置为将紫外光源202发出的紫外光导到彩色树脂层303激发荧光材料发光，以辅助透明液晶显示装置在环境光线低于预设值时显示。在实际应用中，透明导光板201可以为纳米导光板或玻璃导光板，由于纳米导光板或玻璃导光板的透光率高，反射 率低，因此能够提高透明液晶显示装置的透明度。
例如，本公开实施例的透明液晶显示装置还可以包括：检测器，构造为检测环境光线；控制器，构造为根据所述检测器的检测结果控制所述紫外光源的开启与关闭，其中所述紫外光源配置为在所述环境光线的强度低于预设值时被开启，所述透明导光板配置为将所述紫外光源发出的紫外光导到所述彩色树脂层激发所述荧光材料发光，以辅助所述透明液晶显示装置在环境光线的强度低于预设值时显示。
进一步地，透明液晶显示装置还可以包括具有通光孔的边框(图1中未示出)，以及设置在边框内部的检测器30和控制器40。边框可以用于固定和遮挡透明液晶显示装置中的非透明器件，透明显示面板10和透明背光模组20可以嵌入边框中，检测器30和控制器40可以设置在边框内部，从进行可靠固定。检测器30可以位于通光孔的光路上，检测器30可以配置为在开启时检测环境光线，在实际应用中，检测器30可以通过通光孔检测环境光线。由于检测器30设置在包围透明显示面板10的边框中，因此检测器30例如可以准确检测到透明显示面板10周围的环境光线的光强。例如，检测器是光检测器，例如，光电传感器，例如，光电二极管。
控制器40可以连接在紫外光源202和检测器30之间，控制器40可以配置为在确定检测器30检测到的环境光线低于预设值时，控制紫外光源202开启，也即是当透明液晶显示装置周围的环境光线较暗时，控制器40可以控制紫外光源202开启，紫外光源202开启后，透明导光板201可以将紫外光源202发出的紫外光导到彩色树脂层303，以激发荧光材料发光，从而为透明液晶显示装置补充显示所需的光线。由于紫外光不可见，因此透明液晶显示装置中的透明导光板将不会产生高亮的反光面，从而能够提高透明液晶显示装置在透明显示过程中的透明度。
另外，控制器40还可以配置为在确定检测器30检测到的环境光线高于或等于预设值时，控制紫外光源202关闭，也即是当透明液晶显示装置周围的环境光线较亮时，控制器40可以控制紫外光源202关闭，从而透明液晶显示装置可以仅通过环境光线进行显示，由于在环境光线较亮时无需开启紫外光源202，因此能够降低透明液晶显示装置的耗能。
当然，在实际应用中，紫外光源202的开启状态也可以通过用户手动控制，也即是当用户认为环境光线不足时，可以手动开启紫外光源202，从而 提高透明显示时的画面亮度，本公开的实施例对此不作具体限定。
例如，用户可以依靠自身的感受而判断是否可以开启紫外光源或者关闭紫外光源，当用户因为环境光线较暗而看不清楚透明显示装置显示的内容时，即可手动开启紫外光源，或者，用户可以根据检测器检测的环境光线的光强而手动开启或关闭紫外光源，检测器检测的结果可以显示在屏幕上或者显示在相应的应用程序上而提供给用户，本公开的实施例并不对此进行限制。
进一步地，透明液晶显示装置还可以包括胆甾相液晶盒50，参照图1，胆甾相液晶盒可以位于透明背光模组20的外侧，也即是设置在透明导光板201远离液晶层200的一侧。图2示出了一种胆甾相液晶盒50的结构示意图，参照图2，胆甾相液晶盒50可以包括第二透明基底，例如第二玻璃基板501、胆甾相液晶层502和第三透明基底，例如第三玻璃基板503，其中，胆甾相液晶层502位于第二玻璃基板501和第三玻璃基板503之间，且胆甾相液晶盒50的第二玻璃基板501可以与透明背光模组20中的透明导光板201贴合。胆甾相液晶层502中包括胆甾相液晶分子5021，通过添加手性剂、光激发等方式可以调节胆甾相液晶分子5021的排列方向，从而调节胆甾相液晶的螺距，对第二玻璃基板501和第三玻璃基板503则无需进行电场控制。
其中，胆甾相液晶盒50中胆甾相液晶的螺距与紫外光源202的波长呈线性关系，具体地，胆甾相液晶的螺距与紫外光源202的波长可以满足下述线性关系(1)：
(1)λ＝np
其中，λ为紫外光源202的波长，n为胆甾相液晶的平均折射率，p为胆甾相液晶的螺距。
胆甾相液晶盒50可以配置为将紫外光源202发出的紫外光中与胆甾相液晶的旋转方向相同的圆偏紫外光，反射到彩色树脂层303激发荧光材料发光，以辅助透明液晶显示装置在环境光线低于预设值时显示。
在实际应用中，由于透明导光板201在将紫外光导到透明显示面板10时，有部分紫外光由于器件折射和反射等原因，将会射向透明背光模组20的外侧，而设置于透明背光模组20外侧的胆甾相液晶盒50，由于其自身的光学特性，能够对紫外光中与胆甾相液晶的旋转方向相同的圆偏紫外光进行反射，从而能够将圆偏紫外光反射回透明显示面板10，进而反射回的圆偏紫外光到达彩色树脂层时，可以激发荧光材料发光。例如，胆甾相液晶的旋转方向为 右旋时，胆甾相液晶层502能够对右旋的圆偏紫外光进行反射。由于胆甾相液晶盒可以将部分紫外光反射回彩色树脂层，以激发荧光材料发光，因此，能够提高紫外光的利用率，进而能够进一步提高透明液晶显示装置进行透明显示时的画面亮度。
另外，基于胆甾相液晶的光学特性，胆甾相液晶盒50在反射圆偏紫外光的同时，由于胆甾相液晶的螺距与环境光线中可见光的波长不满足上述线性关系(1)，因此，环境光线中的可见光可以透过胆甾相液晶盒50到达透明显示面板10，而不会被胆甾相液晶盒50反射，因此，胆甾相液晶盒50在提高紫外光利用率的同时，还能够保证环境光线中可见光的利用率。
胆甾相液晶层502的两侧可以分别设置取向膜，这两层取向膜可以用于固定胆甾相液晶层502中胆甾相液晶分子5021的取向。在本公开的实施例中，设置在胆甾相液晶层502两侧的两层取向膜均可以采用沿面无摩擦取向，从而可以使胆甾相液晶分子5021沿面无规则排列。
另外，相对于橱窗补光的透明液晶显示装置，也即在透明液晶显示装置的后方设置具有额外光源的橱窗，本公开的实施例提供的透明液晶显示装置可以通过紫外光源激发彩色树脂层中的荧光材料发出光线，从而辅助透明液晶显示装置在环境光线较暗时显示，从而可以使透明液晶显示装置摆脱补光橱窗的展示方式。
在实际应用中，透明显示面板10可以为TN(Twisted Nematic，扭曲向列)透明显示面板、ADS(Advanced super Dimension Switch，高级超维场转换)透明显示面板和VA(Vertical Alignment，垂直配向)透明显示面板中的任一种，本公开的实施例对此不作具体限定。
在本公开的实施例提供的透明液晶显示装置中，彩膜基板上不同颜色的彩色树脂层中分别对应混合有可激发而发出所在彩色树脂层的颜色的荧光材料，每种荧光材料在紫外光激发下可以发出与所属彩色树脂层颜色相同的光线，从而当环境光线较暗时，可以通过背光模组提供的紫外光照射荧光材料时，荧光材料所激发的光线补充环境光线的不足，从而提高透明显示时的画面亮度。同时，由于紫外光不可见，因此透明液晶显示装置中的导光板将不会产生高亮的反光面，从而在提高画面亮度的同时，能够提高透明液晶显示装置在透明显示过程中的透明度。另外，位于透明背光模组外侧的胆甾相液晶盒，可以将未射向透明显示面板的部分紫外光反射回透明显示面板，从而 激发彩色树脂层中的荧光材料发光，如此，能够提高紫外光的利用率，从而进一步提高透明显示时的画面亮度。
本公开的实施例还提供一种如上任意所述的透明液晶显示装置的显示方法，包括：当环境光线的强度低于预设值时，开启所述紫外光源，从而所述紫外光源发出的光激发所述彩色树脂层中的荧光材料而发出与所在彩色树脂层颜色相同的光。
例如，所述透明液晶显示装置的显示方法，还包括：当环境光线的强度大于或等于预设值时，关闭所述紫外光源。
例如，在透明液晶显示装置的显示方法中，所述透明液晶显示装置还包括：检测器，构造为检测所述环境光线的强度；控制器，构造为根据所述检测器的检测结果控制所述紫外光源的开启与关闭，所述显示方法还包括：所述检测器检测所述环境光线的强度；提供检测结果到所述控制器；所述控制器比较所述检测结果与预设值，当环境光线的强度低于预设值时，所述控制器开启所述紫外光源。
例如，在所述的透明液晶显示装置的显示方法中，当环境光线的强度低于预设值时，开启所述紫外光源包括：用户手动开启所述紫外光源。
与现有技术相比，本公开的实施例包括以下优点：
在本公开的实施例提供的透明液晶显示装置及其显示方法中，彩膜基板上不同颜色的彩色树脂层中分别对应混合有可发出对应颜色的荧光材料，每种荧光材料在紫外光激发下可以发出与所属彩色树脂层颜色相同的光线，从而当环境光线较暗时，可以通过背光模组提供的紫外光照射荧光材料时，荧光材料所激发的光线补充环境光线的不足，从而提高透明显示时的画面亮度。同时，由于紫外光不可见，因此透明液晶显示装置中的导光板将不会产生高亮的反光面，从而在提高画面亮度的同时，能够提高透明液晶显示装置在透明显示过程中的透明度。
本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术 语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、商品或者设备中还存在另外的相同要素。
以上对本公开的实施例所提供的一种透明液晶显示装置，进行了详细介绍，本文中应用了具体个例对本公开的实施例的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本公开的实施例的方法及其核心思想；同时，对于本领域的一般技术人员，依据本公开的实施例的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本公开的实施例的限制。
还有以下几点需要说明：
(1)本公开实施例的附图只涉及到与本公开实施例涉及到的结构，其他结构可参考通常设计。
(2)为了清晰起见，在用于描述本公开的实施例的附图中，层或区域的厚度被放大或缩小，即这些附图并非按照实际的比例绘制。可以理解，当诸如层、膜、区域或基板之类的元件被称作位于另一元件“上”或“下”时，该元件可以“直接”位于另一元件“上”或“下”或者可以存在中间元件。
(3)在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合以得到新的实施例。
以上，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，本公开的保护范围应以权利要求的保护范围为准。
本申请要求于2018年5月21日递交的中国专利申请第201810487662.4号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分

Claims (17)

  1. 一种透明液晶显示装置，包括：
    透明液晶显示面板，所述透明液晶显示面板包括彩膜基板；
    透明背光模组，设置在所述透明显示面板的非显示侧，包括：
    透明导光板；以及
    紫外光源，设置在所述透明导光板侧端，
    其中所述彩膜基板包括具有不同颜色的彩色树脂层，所述不同颜色的彩色树脂层中分别混合有可激发而发出对应颜色的荧光材料。
  2. 根据权利要求1所述的透明液晶显示装置，还包括：
    检测器，构造为检测环境光线；
    控制器，构造为根据所述检测器的检测结果控制所述紫外光源的开启与关闭，
    其中所述紫外光源配置为在所述环境光线的强度低于预设值时被开启，所述透明导光板配置为将所述紫外光源发出的紫外光导到所述彩色树脂层激发所述荧光材料发光，以辅助所述透明液晶显示装置在环境光线的强度低于预设值时显示。
  3. 根据权利要求1所述的透明液晶显示装置，还包括：
    胆甾相液晶盒，所述胆甾相液晶盒位于所述透明背光模组与所述透明显示面板相反的一侧，所述胆甾相液晶盒中胆甾相液晶分子的螺距与所述紫外光源的波长呈线性关系；
    所述胆甾相液晶盒配置为将所述紫外光源发出的紫外光中与所述胆甾相液晶分子的旋转方向相同的圆偏紫外光，反射到所述彩色树脂层激发所述荧光材料发光，以辅助所述透明液晶显示装置在环境光线的强度低于预设值时显示。
  4. 根据权利要求3所述的透明液晶显示装置，其中所述胆甾相液晶盒中胆甾相液晶分子的螺距p跟所述紫外光源所发出的光的波长λ的关系满足：λ＝np，其中n为所述胆甾相液晶的平均折射率。
  5. 根据权利要求4所述的透明液晶显示装置，其中所述胆甾相液晶盒包括：
    彼此对盒的上基板和下基板，
    其中所述胆甾相液晶分子夹设在所述上基板和所述下基板之间。
  6. 根据权利要求1-5所述的透明液晶显示装置，其中所述彩膜基板还包括：
    水汽阻隔膜，所述水汽阻隔膜位于所述彩色树脂层的非显示侧。
  7. 根据权利要求1-5中任一项所述的透明液晶显示装置，其中所述彩膜基板还包括：
    基底，所述彩色树脂层设置在所述基底的非显示侧，
    内置偏光片，所述内置偏光片位于所述彩色树脂层的非显示侧。
  8. 根据权利要求7所述的透明液晶显示装置，其中所述透明液晶显示面板包括：
    阵列基板，与所述彩膜基板对置；
    第一偏光片，设置在所述阵列基板的朝向所述透明背光模组的一侧。
  9. 根据权利要求8所述的透明液晶显示装置，其中所述彩膜基板还包括：
    水汽阻隔膜，所述水汽阻隔膜设置在所述彩色树脂层与所述内置偏光片之间。
  10. 根据权利要求2所述的透明液晶显示装置，其中所述透明液晶显示装置还包括具有通光孔的边框，
    其中所述检测器和所述控制器设置在所述边框内，所述检测器位于所述通光孔的光路上，所述控制器连接在所述紫外光源和所述检测器之间。
  11. 根据权利要求1-10中任一项所述的透明液晶显示装置，其中所述透明导光板为纳米导光板或玻璃导光板。
  12. 根据权利要求1-5中任一项所述的透明液晶显示装置，其中所述彩膜基板还包括：
    基底，所述彩色树脂层设置在所述基底的非显示侧，
    第二偏光片，设置在所述基底的与所述彩色树脂层相反的一侧。
  13. 根据权利要求7所述的透明液晶显示装置，其中所述内置偏光片为涂布型偏光片，包括二色性染料和反应单体的混合材料。
  14. 一种权利要求1-13所述的透明液晶显示装置的显示方法，包括：
    当环境光线的强度低于预设值时，开启所述紫外光源，从而所述紫外光 源发出的光激发所述彩色树脂层中的荧光材料而发出与所在彩色树脂层颜色相同的光。
  15. 根据权利要求14所述的透明液晶显示装置的显示方法，还包括：
    当环境光线的强度大于或等于预设值时，关闭所述紫外光源。
  16. 根据权利要求14或15所述的透明液晶显示装置的显示方法，其中所述透明液晶显示装置还包括：
    检测器，构造为检测所述环境光线的强度；
    控制器，构造为根据所述检测器的检测结果控制所述紫外光源的开启与关闭，
    所述显示方法还包括：
    所述检测器检测所述环境光线的强度；
    提供检测结果到所述控制器；
    所述控制器比较所述检测结果与预设值，
    当环境光线的强度低于预设值时，所述控制器开启所述紫外光源。
  17. 根据权利要求15所述的透明液晶显示装置的显示方法，其中当环境光线的强度低于预设值时，开启所述紫外光源包括：
    用户手动开启所述紫外光源。
PCT/CN2019/086244 2018-05-21 2019-05-09 透明液晶显示装置及其显示方法 WO2019223545A1 (zh)

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