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WO2017036064A1 - 透明显示组件和显示装置 - Google Patents

透明显示组件和显示装置 Download PDF

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Publication number
WO2017036064A1
WO2017036064A1 PCT/CN2016/070477 CN2016070477W WO2017036064A1 WO 2017036064 A1 WO2017036064 A1 WO 2017036064A1 CN 2016070477 W CN2016070477 W CN 2016070477W WO 2017036064 A1 WO2017036064 A1 WO 2017036064A1
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WO
WIPO (PCT)
Prior art keywords
transparent
electrode
transparent display
display panel
light
Prior art date
Application number
PCT/CN2016/070477
Other languages
English (en)
French (fr)
Inventor
许凯
黄磊
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/322,871 priority Critical patent/US20170200424A1/en
Publication of WO2017036064A1 publication Critical patent/WO2017036064A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/38—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using electrochromic devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/046—Pixel structures with an emissive area and a light-modulating area combined in one pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/066—Adjustment of display parameters for control of contrast
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/302—Details of OLEDs of OLED structures
    • H10K2102/3023—Direction of light emission
    • H10K2102/3031—Two-side emission, e.g. transparent OLEDs [TOLED]

Definitions

  • Embodiments of the present invention generally relate to the field of display technology, and in particular, to a high contrast transparent display assembly and a display device including the same.
  • Transparent display is a new display technology that allows viewers to see the background behind the screen through the display screen.
  • This novel display technology extends the field of display applications and can be used in cell phones, notebook computers, display windows, refrigerator doors, car displays, billboards, and the like.
  • the AMOLED (Active-matrix Organic Light-Emitting Diode) panel has the characteristics of faster response, higher contrast, and wider viewing angle, which is favored by people. . Due to its self-luminous advantages, the AMOLED panel has a very thin overall structure, weak absorption of visible light, and a natural light transmittance of 95% or more, so it can be used for transparent display. However, when the transparent OLED (Organic Light-Emitting Diode) panel is in the display mode, natural light can still penetrate the transparent OLED panel, thereby causing a decrease in contrast and affecting the display effect.
  • the present invention has been made in order to overcome at least one of the above and other problems and disadvantages of the prior art.
  • a transparent display assembly comprising a transparent display panel,
  • the transparent display panel includes a light-emitting surface for displaying an image and a back surface opposite to the light-emitting surface, and the transparent display assembly further includes a light-adjusting structure disposed on a back side of the transparent display panel, in the display mode
  • the dimming structure blocks background light from entering the transparent display panel through the dimming structure; in the non-display mode, the dimming structure allows background light to enter the transparent display panel through the dimming structure.
  • the dimming structure may include a transparent cover disposed on a back side of the transparent display panel and a dimming material disposed between the transparent cover and a back surface of the transparent display panel a layer, in the display mode, the layer of the light modulating material may block the background light from entering the transparent display panel through the light modulating structure under the control of the first electrical signal; in the non-display mode, the layer of the light modulating material may be The control of the second electrical signal allows background light to enter the transparent display panel through the dimming structure.
  • the light control structure may further include a first electrode formed on at least a partial region of the back surface of the transparent display panel and a second electrode opposite to the first electrode, and the light control material layer may Provided between the first electrode and the second electrode, the second electrode is formed on a surface of the transparent cover plate facing the first electrode.
  • the light adjustment structure may further include: another transparent cover disposed on the back surface of the transparent display panel opposite to the transparent cover; at least formed on the other transparent cover a first electrode on a partial region facing the surface of the light modulating material layer; and a second electrode opposite to the first electrode, the light modulating material layer is disposed between the first electrode and the second electrode, the second electrode Formed on a surface of the transparent cover plate facing the layer of the light modulating material.
  • At least one of the first electrode and the second electrode may comprise a mesh electrode.
  • the dimming structure may further include a transparent conductive material layer covering at least one of the first transparent electrode and the second electrode.
  • At least one of the first electrode and the second electrode may include a plate electrode made of a transparent conductive material.
  • the light control structure may further include a sealant, the sealant is disposed between the transparent cover and the back of the transparent display panel to be in the transparent cover and the cover Transparent display Forming a sealed space around the back surface of the display panel; or the sealant is disposed between the transparent cover and the other transparent cover to cover the transparent cover and the cover A sealed space surrounding the layer of the light modulating material is formed between the other transparent cover plates.
  • a sealant is disposed between the transparent cover and the back of the transparent display panel to be in the transparent cover and the cover Transparent display Forming a sealed space around the back surface of the display panel; or the sealant is disposed between the transparent cover and the other transparent cover to cover the transparent cover and the cover A sealed space surrounding the layer of the light modulating material is formed between the other transparent cover plates.
  • the sealed space may include a plurality of compartments separated by the sealant to accommodate a light modulating material.
  • the dimming structure may further include a plurality of first strip electrodes and a plurality of second strip electrodes formed on the same surface facing the layer of the light modulating material, the plurality of first strips
  • the electrode and the plurality of second strip electrodes are alternately arranged in a linear array and different electrical signals can be applied to form a fringe electric field between the adjacent first strip electrode and the second strip electrode.
  • the transparent display panel may include a transparent OLED display panel having an array substrate and an OLED device, the dimming structure being disposed on a side of the array substrate facing away from the OLED device.
  • the transparent cover may comprise a flexible substrate, and/or the transparent display panel comprises a flexible substrate.
  • the light modulating material layer may be a liquid crystal layer, the light modulating structure further includes a polarizing layer disposed on both sides of the liquid crystal layer; or the light modulating material layer may be an electrochromic material layer .
  • a display device comprising the transparent display assembly of any of the above embodiments.
  • the transparent display assembly and the display device provided by the present invention are advantageous for improving the contrast and display effect of the displayed image.
  • implementing any of the products or methods of the present invention does not necessarily require all of the advantages described above to be achieved at the same time.
  • FIG. 1 is a cross-sectional view schematically showing a structure of a transparent display assembly in which a display panel is in a display mode, according to an exemplary embodiment of the present invention
  • FIG. 2 is a cross-sectional view schematically showing a structure of a transparent display assembly in which a display panel is in a non-display mode, according to an exemplary embodiment of the present invention
  • FIG. 3 is a cross-sectional view showing a light control structure according to an exemplary embodiment of the present invention.
  • FIG. 4 is a cross-sectional view showing a light control structure according to another exemplary embodiment of the present invention.
  • FIG. 5 is a plan view showing a light control structure according to an exemplary embodiment of the present invention.
  • a transparent display assembly including a transparent display panel, wherein the transparent display panel includes a light emitting surface for displaying an image and a back surface opposite to the light emitting surface, in a transparent
  • the back side of the display panel is provided with a dimming structure.
  • the dimming structure blocks the background light from entering the transparent display panel through the dimming structure; in the non-display mode, the dimming structure allows the background light to pass through the dimming structure Entering the transparent display panel, the transparent display panel is not affected by the background light in the display mode, and the contrast of the displayed image is improved.
  • FIG. 1 schematically illustrates a structure of a transparent display assembly according to an exemplary embodiment of the present invention,
  • the middle display panel is in display mode.
  • the transparent display assembly includes a transparent display panel 100 and a dimming structure 200 disposed on the panel.
  • the transparent display panel 100 has a light-emitting surface or front surface 101 for displaying an image and a back surface 102 opposite to the light-emitting surface.
  • the dimming structure 200 may be disposed on the side of the back surface 102 of the transparent display panel 100 .
  • the dimming structure 200 is configured to allow the background light AL to pass through the dimming structure 200 and enter the transparent display panel 100 in the non-display mode in the non-display mode, as shown in FIG. 2, such that the entire component
  • the display panel still has a higher transparency when the image is not displayed; and when the transparent display panel 100 is in the display mode, such as displaying an image, as described below, the dimming structure 200 can block the background light AL from entering through the dimming structure.
  • the transparent display panel 100 as shown in FIG. 1, avoids the problem that the displayed image is affected by the background light to cause a decrease in visibility, so that the transparent display panel 100 can display an image with a higher contrast.
  • a transparent display panel equipped with such a dimming structure can be used for a transparent display screen to improve the contrast of a display image, such as for a mobile phone, a notebook computer, a desktop transparent display, a window display screen, a refrigerator door, a car display, an advertisement. Cards and so on.
  • the dimming structure of the present invention can be implemented in a variety of ways.
  • the dimming structure includes a transparent cover disposed on the back of the transparent display panel and a layer of light modulating material disposed between the transparent cover and the transparent display panel.
  • the light modulating material layer may adopt a liquid crystal dimming technology, and in other embodiments, the light modulating material layer may use an electrochromic material or other light modulating material to control whether the backlight enters the transparent display panel from the back side, and the present invention does not limit.
  • the dimming structure 100 includes a transparent cover 201, a liquid crystal layer 202 disposed between the transparent cover 201 and the back surface 102 of the transparent display panel 100, and a voltage applied to the liquid crystal layer 202. Or a first electrode 203 and a second electrode 204 that cause deflection of liquid crystal molecules in the liquid crystal layer 202 are generated.
  • the liquid crystal layer 202 is configured to block background light from entering the transparent display panel through the liquid crystal layer when the first electrical signal is applied, allowing background light to pass through the liquid crystal layer 202 and into the transparent display panel 100 when the second electrical signal is applied.
  • the thickness or height of the liquid crystal layer 202 can be about 5 microns.
  • the first electrode 203 is formed on the side of the back surface 102 of the transparent display panel 100.
  • the transparent display panel 100 may be a transparent OLED display panel having an array substrate, and the first electrode 203 is disposed on the array of the transparent display panel 100.
  • the second electrode 204 is disposed on the transparent cover 201 opposite to the first electrode 203, that is, on the surface of the transparent cover 201 facing the first electrode 203, and the liquid crystal layer 202 is disposed on the surface Between an electrode 203 and the second electrode 204.
  • the first electrode 203 is disposed directly on the back surface 102 of the transparent display panel 100; in other embodiments, as shown in FIGS. 3 and 4, the dimming structure 200 may further include
  • the transparent cover 201 is opposite to another transparent cover 206 disposed on the back surface 102 of the transparent display panel 100, such as a glass substrate, and the first electrode 203 is disposed on a portion of the surface of the other transparent cover 206 facing the liquid crystal layer.
  • the second electrode 204 is formed on a surface of the transparent cover 201 facing the liquid crystal layer 202 opposite to the first electrode 203, and the liquid crystal layer 202 is disposed between the first electrode 203 and the second electrode 204. Subsequently, the surface of the transparent cover 206 facing away from the liquid crystal layer may be attached to the back surface of the array substrate of the transparent display panel.
  • the transparent display assembly when the transparent display assembly is in a display mode, such as displaying an image (shown schematically in RGB form), as shown in FIG. 1, the first electrode 203 and the second electrode 204 are applied to the liquid crystal layer 202.
  • the first electrical signal at this time, the liquid crystal molecules in the liquid crystal layer 202 are disorderly arranged, preventing the background light AL from the surrounding environment from entering the display panel through the dimming structure 100 and affecting the display of the image; and the transparent display component is in the non-display mode.
  • a display mode such as displaying an image (shown schematically in RGB form)
  • the first electrode 203 and the second electrode 204 are applied to the liquid crystal layer 202.
  • the first electrical signal at this time, the liquid crystal molecules in the liquid crystal layer 202 are disorderly arranged, preventing the background light AL from the surrounding environment from entering the display panel through the dimming structure 100 and affecting the display of the image; and the transparent display component is in the non-display mode.
  • the first electrode 203 and the second electrode 204 apply a second electrical signal to the liquid crystal layer 202, whereby the generated electric field causes the disordered liquid crystal molecules to be deflected and arranged in an orderly manner, allowing the light AL to pass therethrough.
  • the generated electric field causes the disordered liquid crystal molecules to be deflected and arranged in an orderly manner, allowing the light AL to pass therethrough.
  • the first electrode 203 and the second electrode 204 are preferably light transmissive, configured to have a light transmissive structure, or arranged in a light transmissive manner.
  • at least one of the first electrode 203 and the second electrode 204 is made of a transparent conductive material, such as a transparent plate electrode, as shown in FIGS.
  • At least one of the first electrode 203 and the second electrode 204 includes a mesh electrode, such as a mesh structure formed of a metal wire of Al, Cr, or the like, having light transmissivity. Further, at least one of the first electrode 203 and the second electrode 204 may further include a plurality of linear or strip-shaped sub-electrodes. Illustratively, a layer of metal or conductive material may first be deposited on the surface of the cover or substrate and then etched to form a mesh electrode or strip electrode.
  • the first electrode 203 and the second electrode 204 are oppositely disposed in such a manner that the liquid crystal layer 202 is disposed therebetween, and the first electrode 203 and the second electrode 204 are supplied with power to apply an electric signal to the liquid crystal layer 202.
  • an electric field generated between the first electrode 203 and the second electrode 204 can cause liquid crystal molecules in the liquid crystal layer 202 to be deflected.
  • first electrode 203 and/or the second electrode 204 are formed as a mesh electrode or a strip electrode
  • a transparent cover plate and/or Or a surface of the transparent display panel is formed, such as a deposited, transparent conductive material layer covering at least a corresponding electrode formed on the surface.
  • transparent conductive material layers 207 and 208 which are respectively covered with a mesh or strip-shaped first electrode 203 and second electrode 204 are formed.
  • a transparent conductive material such as ITO (Indium Tin Oxide) is deposited on the entire surface. , covering the corresponding electrode.
  • the dimming structure 200 may include a plurality of first strip electrodes 203 and a plurality of second strip electrodes 204 formed on the same surface, for example, the strip electrodes are formed on the transparent cover 201 faces the surface of the liquid crystal layer, or both are formed on the surface of the transparent cover 206 facing the liquid crystal layer (see FIG. 4), or both are formed on the back surface 102 of the display panel.
  • the first strip electrode 203 and the second strip electrode 204 are alternately arranged in a line array on the surface.
  • These strip electrodes may be made of a metal material, preferably made of a transparent conductive material, such as a layer of material deposited by etching.
  • first strip electrodes 203 and second strip electrodes 204 when different electrical signals are applied to the alternately arranged first strip electrodes 203 and second strip electrodes 204, adjacent first strip electrodes 203 and second strip electrodes 204 A fringing electric field is generated between the edge electric fields causing the liquid crystal molecules in the liquid crystal layer 202 to be deflected, so that in the non-display mode, the liquid crystal molecules are sequentially arranged to allow light to pass therethrough.
  • the dimming structure 200 may further include a sealant 205, which may be disposed between the transparent cover and the back surface of the transparent display panel to form a seal around the liquid crystal layer 202 between the transparent cover and the back surface of the transparent display panel. space.
  • the sealant 205 may be disposed between the transparent cover sheets 201 and 206 or between the transparent cover 201 and the back side 206 of the display panel.
  • the sealant 205 may be disposed only around the peripheral edge of the transparent cover and the display panel with a partition-free sealed space for accommodating the liquid crystal layer 202 therebetween, as shown in FIGS. 1 and 2;
  • a plurality of sealant 205 or similar support structure may be disposed in the sealed space shown in FIGS. 1 and 2 to divide the sealed space into a plurality of small compartments, each of which is filled with a certain amount.
  • LCD as shown in Figure 3-5.
  • the sealant 205 can maintain the position of the liquid crystal unchanged, such that the display panel can be used in flexible applications, such as flexible transparent displays.
  • the flexible cover plate and/or the transparent display panel include a flexible substrate.
  • the light-adjusting material layer adopts a liquid crystal layer, and the liquid crystal dimming technology controls whether the background light enters the transparent display panel from the dimming structure.
  • the dimming structure further includes the liquid crystal layer. a polarizing layer on both sides of the layer.
  • the layer of light modulating material comprises a layer of electrochromic material.
  • a first electrical signal can be applied to the layer of electrochromic material, the layer of electrochromic material changing its color, such as turning black, to block visible light in the surrounding from entering the transparent display panel through the dimming structure.
  • the transparent display panel is not affected by the background light in the display image, and the contrast of the display image is improved; and when the transparent display component is in the non-display mode, the second electrical signal is applied to the electrochromic material layer, the electrochromic material layer A color that allows visible light to pass therethrough is presented, thereby transparently displaying the light transmission of the component in the non-display mode.
  • a display device comprising the transparent display assembly described in any of the above embodiments.
  • Such a display device can be used for transparent display to improve the contrast of displayed images, such as mobile phones, notebook computers, display windows, refrigerator doors, cars Display monitors, billboards, etc.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electroluminescent Light Sources (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

一种透明显示组件，包括透明显示面板(100)，该透明显示面板(100)包括用于显示图像的出光面(101)和与该出光面(101)相反的背面(102)，该透明显示组件还包括设置在该透明显示面板(100)的背面(102)一侧的调光结构(200)，在显示模式中，该调光结构(200)阻挡背景光(AL)通过该调光结构(200)进入该透明显示面板(100)；在非显示模式中，该调光结构(200)允许背景光(AL)通过该调光结构(200)进入该透明显示面板(100)。

Description

透明显示组件和显示装置
相关申请的交叉引用
本申请要求于2015年8月28日递交中国专利局的、申请号为201510542946.5的中国专利申请的权益，该申请的全部公开内容以引用方式并入本文。
技术领域
本发明的实施例一般地涉及显示技术领域，并且具体地涉及一种高对比度的透明显示组件和包括该透明显示组件的显示装置。
背景技术
透明显示作为一种全新的显示技术，可以让观察者透过显示屏幕看到屏幕后方的背景。这种新颖的显示技术拓展了显示器的应用领域，并且可以用于手机、笔记本电脑、展示橱窗、冰箱门、车载显示器、广告牌等。
与传统的液晶面板相比，AMOLED(Active-matrix Organic Light-Emitting Diode，有源矩阵有机电致发光二极管)面板具有反应速度较快、对比度更高、视角较广等特点，倍受人们的青睐。AMOLED面板由于其自发光的优势，整体结构非常薄，对可见光吸收弱，自然光透过率可以做到95％以上，因此可以用于透明显示。但是，透明OLED(Organic Light-Emitting Diode，有机电致发光二极管)面板在显示模式时，自然光依然可以穿透该透明OLED面板，从而造成对比度下降，影响其显示效果。
发明内容
为了克服现有技术存在的上述和其它问题和缺陷中的至少一种，提出了本发明。
根据本发明的一个方面，提出了一种透明显示组件，包括透明显示面板， 所述透明显示面板包括用于显示图像的出光面和与所述出光面相反的背面，所述透明显示组件还包括设置在所述透明显示面板的背面一侧的调光结构，在显示模式中，所述调光结构阻挡背景光通过所述调光结构进入透明显示面板；在非显示模式中，所述调光结构允许背景光通过所述调光结构进入透明显示面板。
在一个实施例中，所述调光结构可以包括设置在所述透明显示面板的背面一侧的透明盖板以及设置在所述透明盖板和所述透明显示面板的背面之间的调光材料层，在显示模式中，所述调光材料层可以在第一电信号的控制下阻挡背景光通过所述调光结构进入透明显示面板；在非显示模式中，所述调光材料层可以在第二电信号的控制下允许背景光通过该调光结构进入透明显示面板。
在一个实施例中，所述调光结构还可以包括至少形成在所述透明显示面板的背面的部分区域上的第一电极和与第一电极相对的第二电极，所述调光材料层可以设置在所述第一电极和所述第二电极之间，所述第二电极形成在所述透明盖板面向所述第一电极的表面上。
在一个实施例中，所述调光结构还可以包括：与所述透明盖板相对地设置在所述透明显示面板的背面上的另一个透明盖板；至少形成在所述另一个透明盖板面向调光材料层的表面的部分区域上的第一电极；和与所述第一电极相对的第二电极，调光材料层设置在所述第一电极和第二电极之间，第二电极形成在所述透明盖板面向所述调光材料层的表面上。
在一个实施例中，所述第一电极和所述第二电极中的至少一者可以包括网状电极。
在一个实施例中，该调光结构还可以包括覆盖所述第一透明电极和所述第二电极中的至少一者的透明导电材料层。
在一个实施例中，所述第一电极和所述第二电极中的至少一者可以包括由透明导电材料制成的板状电极。
在一个实施例中，所述调光结构还可以包括封框胶，所述封框胶设置在所述透明盖板和所述透明显示面板的背面之间，以在所述透明盖板和所述透明显 示面板的背面之间形成围绕调光材料层的密封空间；或，所述封框胶设置在所述透明盖板和所述另一个透明盖板之间，以在所述透明盖板和所述另一个透明盖板之间形成围绕调光材料层的密封空间。
在一个实施例中，所述密封空间可以包括多个由所述封框胶分隔而成以容纳调光材料的隔室。
在一个实施例中，所述调光结构还可以包括形成在面向调光材料层的同一个表面上的多个第一条状电极和多个第二条状电极，所述多个第一条状电极和所述多个第二条状电极交替地排列成线状阵列且能够被施加不同的电信号以在相邻的第一条状电极和第二条状电极之间形成边缘电场。
在一个实施例中，所述透明显示面板可以包括具有阵列基板和OLED器件的透明OLED显示面板，所述调光结构设置在所述阵列基板的背离OLED器件的一侧。
在一个实施例中，所述透明盖板可以包括柔性基板，和/或所述透明显示面板包括柔性基板。
在一个实施例中，所述调光材料层可以是液晶层，所述调光结构还包括设置在所述液晶层两侧的偏光层；或者所述调光材料层可以是电致变色材料层。
根据本发明的另一个方面，还提供了一种显示装置，包括上述任一实施例中的透明显示组件。
由此，本发明所提供的透明显示组件和显示装置有利于提高显示图像的对比度和显示效果。当然，实施本发明的任一产品或方法并不一定需要同时达到以上所述的所有优点。
通过下文中参照附图对本发明所作的详细描述，本发明的其它目的和优点将显而易见，并可帮助对本发明有全面的理解。
附图说明
通过参考附图能够更加清楚地理解本发明的特征和优点，附图是示意性的 而不应理解为对本发明进行任何限制，在附图中：
图1为示意性地示出根据本发明的示例性实施例的透明显示组件的结构的剖视图，其中显示面板处于显示模式；
图2为示意性地示出根据本发明的示例性实施例的透明显示组件的结构的剖视图，其中显示面板处于非显示模式；
图3为示出根据本发明的一个示例性实施例的调光结构的剖视图；
图4为示出根据本发明的另一个示例性实施例的调光结构的剖视图；以及
图5为示出根据本发明的示例性实施例的调光结构的俯视图。
具体实施方式
下面将结合附图，对本发明的实施例进行详细的描述。在本说明书中，相同或相似的部件由相同或类似的附图标号指示。下述参照附图对本发明的各实施方式的说明旨在阐述本发明的总体构思，而不应当理解为对本发明的一种限制。
此外，在下面的详细描述中，为便于说明，阐述了许多具体的细节以提供对本发明的实施例的全面理解。然而明显地，一个或多个实施例在没有这些具体细节的情况下也可以被实施。在其它情况下,公知的结构和装置以图示的方式体现以简化附图。
根据本发明的一个总的发明构思，提供了一种透明显示组件，该透明显示组件包括透明显示面板，其中透明显示面板包括用于显示图像的出光面和与该出光面相反的背面，在透明显示面板的背面一侧设置有调光结构，在显示模式中，该调光结构阻挡背景光通过调光结构进入透明显示面板；在非显示模式中，该调光结构允许背景光通过调光结构进入透明显示面板，使得透明显示面板在显示模式中不会受到背景光的影响，提高显示图像的对比度。
图1示意性地示出根据本发明的示例性实施例的透明显示组件的结构，其 中显示面板处于显示模式中。如图1所示，该透明显示组件包括透明显示面板100和设置在该面板上的调光结构200。透明显示面板100具有用于显示图像的出光面或正面101和与出光面相反的背面102。在图1中示出的示例中，调光结构200可以设置在透明显示面板100的背面102一侧。
根据本发明的实施例，调光结构200被配置成在透明显示面板100在非显示模式中允许背景光AL通过该调光结构200并进入透明显示面板100，如图2所示，使得整个组件在显示面板未显示图像时仍具有较高的透明度；而在透明显示面板100在显示模式中，如显示图像时，如下文所述，调光结构200能够阻挡背景光AL通过该调光结构进入透明显示面板100，如图1所示，从而避免所显示的图像受到背景光影响而导致可见度降低的问题，使得透明显示面板100能够以较高的对比度显示图像。因此，配备有这种调光结构的透明显示面板可以用于透明显示屏以提高显示图像的对比度，如用于手机、笔记本电脑、桌面透明显示器、橱窗类展示屏、冰箱门、车载显示器、广告牌等等。
本发明的这种调光结构可以采用多种方式实现。例如，调光结构包括设置在透明显示面板背面的透明盖板以及设置在该透明盖板和透明显示面板之间的调光材料层。该调光材料层可以采用液晶调光技术，而在其它实施例中，调光材料层可以采用电致变色材料或其它调光材料控制背景光是否从背面进入透明显示面板，本发明对此不作限制。
示例性地，如图1和2所示，调光结构100包括透明盖板201、设置在透明盖板201和透明显示面板100的背面102之间的液晶层202、以及向液晶层202施加电压或产生引起液晶层202中的液晶分子偏转的第一电极203和第二电极204。该液晶层202被配置成在被施加第一电信号时阻挡背景光通过该液晶层进入透明显示面板，在被施加第二电信号时允许背景光通过该液晶层202并进入透明显示面板100。示例性地，液晶层202的厚度或高度可以为约5微米。
在一个示例中，第一电极203形成在透明显示面板100的背面102一侧，例如，透明显示面板100可以为具有阵列基板的透明OLED显示面板，第一电极203设置在透明显示面板100的阵列基板的背面的部分区域上，而第二电极204与第一电极203相对地设置在透明盖板201上，即形成在透明盖板201面向第一电极203的表面上，液晶层202设置在第一电极203和第二电极204之间。
在图1和2示出的实施例中，第一电极203直接设置在透明显示面板100的背面102上；在其它实施例中，如图3和4所示，调光结构200还可以包括与透明盖板201相对设置在透明显示面板100的背面102上的另一个透明盖板206，如玻璃基板，第一电极203设置在另一个透明盖板206的面向液晶层的表面的部分区域上。第二电极204形成在透明盖板201面向液晶层202的表面上，与第一电极203相对，液晶层202设置在第一电极203和第二电极204之间。随后，透明盖板206的背向液晶层的表面可以与透明显示面板的阵列基板的背面贴合。
根据本发明的实施例，透明显示组件在显示模式中，如显示图像(以RGB形式示意性地示出)时，如图1所示，第一电极203和第二电极204向液晶层202施加第一电信号，此时液晶层202中的液晶分子无序排列，阻止来自周围环境的背景光AL通过调光结构100而进入显示面板并影响图像的显示；而透明显示组件在非显示模式中，如图2所示，第一电极203和第二电极204向液晶层202施加第二电信号，由此产生的电场引起无序排列的液晶分子偏转并有序地排列，允许光AL从中通过，从而保证透明显示组件在非显示模式中的透光性。
根据本发明的实施例，第一电极203和第二电极204优选是透光的、被构造成具有透光结构、或被以透光方式布置。例如，第一电极203和第二电极204中的至少一个由透明导电材料制成，如形成为透明板状电极，如图1和2所示。
可替换地，如图3和4所示，第一电极203和第二电极204中的至少一者包括网状电极，如由Al、Cr等金属线形成的网状结构，具有透光性。此外，第一电极203和第二电极204中的至少一者还可以包括多个线状或条状子电极。示例性地，可以首先在所述盖板或基板的表面上沉积金属或导电材料层，然后刻蚀该材料层而形成网状电极或条状电极。
在图3的示例性实施例中，第一电极203和第二电极204以液晶层202设置在其间的方式相对设置，第一电极203和第二电极204被供电后向液晶层202施加电信号，由此在第一电极203和第二电极204之间产生的电场能够引起液晶层202中的液晶分子偏转。
在一个示例中，在第一电极203和/或第二电极204形成为网状电极或条状电极的情况下，为了提高电导率而不影响面板的透光性，可以在透明盖板和/或透明显示面板的表面上形成，如沉积，透明导电材料层，其至少覆盖形成在该表面上的对应电极。如图3所示，形成有分别覆盖网状或条状的第一电极203和第二电极204的透明导电材料层207和208。例如，在透明盖板201和/或206的表面上或显示面板的背面102上形成相应的网状或条状电极之后，在整个表面上沉积一层透明导电材料，如ITO(氧化铟锡)，覆盖对应的电极。
在可替换实施例中，调光结构200可以包括形成在同一个表面上的多个第一条状电极203和多个第二条状电极204，例如，这些条状电极都形成在透明盖板201面向液晶层的表面上，或，都形成在透明盖板206面向液晶层的表面上(参见图4)，或都形成在显示面板的背面102上。第一条状电极203和第二条状电极204在该表面上交替地排列成线状阵列。这些条状电极可以由金属材料制成，优选地，由透明导电材料制成，如通过刻蚀沉积的材料层而形成。
在这种情况中，当向交替排列的第一条状电极203和第二条状电极204施加不同的电信号时，相邻的第一条状电极203和第二条状电极204 之间会产生边缘电场，这种边缘电场引起液晶层202中的液晶分子偏转，使得透明显示面板在非显示模式中，液晶分子有序排列而允许光从中通过。
此外，调光结构200还可以包括封框胶205，其可以设置在透明盖板和透明显示面板的背面之间，以在透明盖板和透明显示面板的背面之间形成围绕液晶层202的密封空间。例如，封框胶205可以设置在透明盖板201和206之间，或设置在透明盖板201和显示面板的背面206之间。
根据本发明的实施例，封框胶205可以仅围绕透明盖板和显示面板的外围边缘设置，在其间形成用于容纳液晶层202的无分隔的密闭空间，如图1和2所示；作为替换，还可以在图1和2所示的密闭空间内设置多个封框胶205或类似的支撑结构，以将该密封空间分隔成多个小隔室，每个隔室中注入一定量的液晶，如图3-5所示。在图3-5的示例中，封框胶205可以保持液晶的位置不变，使得显示面板可以应用于柔性应用中，如柔性透明显示屏。此时，上述透明盖板和/或透明显示面板中包括柔性基板。
在上述实施例中，调光材料层采用液晶层，通过液晶调光技术控制背景光是否从调光结构进入透明显示面板，当调光材料层是液晶层时，调光结构还包括设置在液晶层两侧的偏光层。在本发明的另一个示例性实施例中，调光材料层包括电致变色材料层。在透明显示组件处于显示模式时，可以向电致变色材料层施加第一电信号，电致变色材料层改变其颜色，如变成黑色，以阻挡周围中的可见光通过调光结构进入透明显示面板，使得透明显示面板在显示图像不会受到背景光的影响，提高显示图像的对比度；而在透明显示组件处于非显示模式时，向电致变色材料层施加第二电信号，电致变色材料层呈现允许可见光从中通过的颜色，从而透明显示组件在非显示模式中的透光性。
根据本发明的另一个示例性实施例，还提供了一种显示装置，包括上述任一实施例中描述的透明显示组件。这种显示装置可以用于透明显示，提高显示图像的对比度，如应用于手机、笔记本电脑、展示橱窗、冰箱门、车 载显示器、广告牌等。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行变化，本发明的范围由所附权利要求及其等同物限定。

Claims (14)

  1. 一种透明显示组件，包括透明显示面板，所述透明显示面板包括用于显示图像的出光面和与所述出光面相反的背面，其特征在于，
    所述透明显示组件还包括设置在所述透明显示面板的背面一侧的调光结构，
    在显示模式中，所述调光结构阻挡背景光通过所述调光结构进入透明显示面板；
    在非显示模式中，所述调光结构允许背景光通过所述调光结构进入透明显示面板。
  2. 根据权利要求1所述的透明显示组件，其特征在于，所述调光结构包括设置在所述透明显示面板的背面一侧的透明盖板以及设置在所述透明盖板和所述透明显示面板的背面之间的调光材料层，
    在显示模式中，所述调光材料层在第一电信号的控制下阻挡背景光通过所述调光结构进入透明显示面板；
    在非显示模式中，所述调光材料层在第二电信号的控制下允许背景光通过该调光结构进入透明显示面板。
  3. 根据权利要求2所述的透明显示组件，其特征在于，所述调光结构还包括至少形成在所述透明显示面板的背面的部分区域上的第一电极和与第一电极相对的第二电极，所述调光材料层设置在所述第一电极和所述第二电极之间，所述第二电极形成在所述透明盖板面向所述第一电极的表面上。
  4. 根据权利要求2所述的透明显示组件，其特征在于，所述调光结构还包括：
    与所述透明盖板相对地设置在所述透明显示面板的背面上的另一个透明 盖板；
    至少形成在所述另一个透明盖板面向调光材料层的表面的部分区域上的第一电极；和
    与所述第一电极相对的第二电极，调光材料层设置在所述第一电极和第二电极之间，第二电极形成在所述透明盖板面向所述调光材料层的表面上。
  5. 根据权利要求3或4所述的透明显示组件，其特征在于，所述第一电极和所述第二电极中的至少一者包括网状电极。
  6. 根据权利要求5所述的透明显示组件，其特征在于，该调光结构还包括覆盖所述第一透明电极和所述第二电极中的至少一者的透明导电材料层。
  7. 根据权利要求3或4所述的透明显示组件，其特征在于，所述第一电极和所述第二电极中的至少一者包括由透明导电材料制成的板状电极。
  8. 根据权利要求2-4中任一项所述的透明显示组件，其特征在于，所述调光结构还包括封框胶，所述封框胶设置在所述透明盖板和所述透明显示面板的背面之间，以在所述透明盖板和所述透明显示面板的背面之间形成围绕调光材料层的密封空间；
    或，所述封框胶设置在所述透明盖板和所述另一个透明盖板之间，以在所述透明盖板和所述另一个透明盖板之间形成围绕调光材料层的密封空间。
  9. 根据权利要求8所述的透明显示组件，其特征在于，所述密封空间包括多个由所述封框胶分隔而成以容纳调光材料的隔室。
  10. 根据权利要求2所述的透明显示组件，其特征在于，所述调光结构还包括形成在面向调光材料层的同一个表面上的多个第一条状电极和多个第二 条状电极，所述多个第一条状电极和所述多个第二条状电极交替地排列成线状阵列且能够被施加不同的电信号以在相邻的第一条状电极和第二条状电极之间形成边缘电场。
  11. 根据权利要求1所述的透明显示组件，其特征在于，所述透明显示面板包括具有阵列基板和OLED器件的透明OLED显示面板，所述调光结构设置在所述阵列基板的背离OLED器件的一侧。
  12. 根据权利要求2所述的透明显示组件，其特征在于，所述透明盖板包括柔性基板，和/或所述透明显示面板包括柔性基板。
  13. 根据权利要求2-4中任一项所述的透明显示组件，其特征在于，所述调光材料层是液晶层，所述调光结构还包括设置在所述液晶层两侧的偏光层；或者
    所述调光材料层是电致变色材料层。
  14. 一种显示装置，包括权利要求1-13中任一项所述的透明显示组件。
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