CN113189802A - Display module, display method thereof and display device - Google Patents

Display module, display method thereof and display device Download PDF

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Publication number
CN113189802A
CN113189802A CN202110461955.7A CN202110461955A CN113189802A CN 113189802 A CN113189802 A CN 113189802A CN 202110461955 A CN202110461955 A CN 202110461955A CN 113189802 A CN113189802 A CN 113189802A
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electrochromic
module
sub
display
modules
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CN202110461955.7A
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Chinese (zh)
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CN113189802B (en
Inventor
柏玲
鹿堃
周星
徐迪
陈芪飞
赵洪宇
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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Priority to CN202110461955.7A priority Critical patent/CN113189802B/en
Publication of CN113189802A publication Critical patent/CN113189802A/en
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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
    • G02F1/1323—Arrangements for providing a switchable viewing angle
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • 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
    • 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
    • G02F1/153—Constructional details
    • 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

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The embodiment of the application provides a display module, a display method of the display module and a display device of the display module. This display module assembly includes: the display device comprises a display panel, a visual angle adjusting structure and a control module; the visual angle adjusting structure is positioned on one side of the display panel and comprises a plurality of light transmitting areas and a plurality of visual angle adjusting areas, the light transmitting areas and the visual angle adjusting areas are alternately arranged, the visual angle adjusting areas are provided with electrochromic devices, and the electrochromic devices comprise a plurality of electrochromic sub-modules; and the control module comprises a plurality of control sub-modules, the control sub-modules are electrically connected with at least one electrochromic sub-module, and the control sub-modules are used for applying voltage to the corresponding electrochromic sub-modules so as to change the transmittance of the electrochromic sub-modules. The display module that this application embodiment provided self changeable demonstration visual angle scope is wide, can switch the demonstration angle at will according to the demand of the different occasions of user, fine satisfied under the different environment user to the demand of peeping-proof.

Description

Display module, display method thereof and display device
Technical Field
The application relates to the technical field of display, in particular to a display module and a display method and a display device thereof.
Background
With the development of society, the combination between various electronic devices such as mobile phones, computers, televisions and the like and the life and work of people becomes more and more compact, however, the electronic devices may cause the problem of leakage of personal information while providing a lot of convenience for people. In particular, current displays typically have a large viewing angle, which is disadvantageous for privacy of personal information security. In order to protect information privacy of users, a plurality of peep-proof display products are introduced in the market, and at present, most of the peep-proof display products realize a peep-proof effect by attaching a peep-proof film on the surface of a display.
The inventor of this application discovers, the peep-proof display product of prior art can't satisfy under the different environment user to the demand of peep-proof.
Disclosure of Invention
The application aims at the defects of the prior art and provides a display module, a display method and a display device thereof, and the technical problem that the peep-proof display product in the prior art cannot meet the demands of users on peep-proof in different environments is solved.
The embodiment of the application provides a display module assembly, include:
a display panel;
the visual angle adjusting structure is positioned on one side of the display panel and comprises a plurality of light transmitting areas and a plurality of visual angle adjusting areas, the light transmitting areas and the visual angle adjusting areas are alternately arranged, the visual angle adjusting areas are provided with electrochromic devices, and the electrochromic devices comprise a plurality of electrochromic sub-modules;
and the control module comprises a plurality of control sub-modules, the control sub-modules are electrically connected with at least one electrochromic sub-module, and the control sub-modules are used for applying voltage to the corresponding electrochromic sub-modules so as to change the transmittance of the electrochromic sub-modules.
Optionally, the viewing angle adjusting structure includes N electrochromic devices, each of which includes N electrochromic sub-modules;
the control module comprises N × N control sub-modules, and the control sub-modules are electrically connected with the electrochromic sub-modules in a one-to-one correspondence manner; wherein:
n is a positive integer greater than or equal to 2, and N is a positive integer greater than or equal to 2.
Optionally, in each electrochromic device, the electrochromic submodules are symmetrically distributed with respect to a symmetry axis of the electrochromic device.
Optionally, each electrochromic device comprises a first electrochromic submodule, a second electrochromic submodule, a third electrochromic submodule and a fourth electrochromic submodule;
the control module comprises a first control submodule, a second control submodule, a third control submodule and a fourth control submodule;
the first control sub-module is electrically connected with all the first electrochromic sub-modules;
the second control sub-module is electrically connected with all the second electrochromic sub-modules;
the third control sub-module is electrically connected with all the third electrochromic sub-modules;
the fourth control submodule is electrically connected with all the fourth electrochromic submodules.
Optionally, in each electrochromic device, the first electrochromic submodule and the third electrochromic submodule are symmetrically distributed about the electrochromic device to which the electrochromic device belongs along a symmetry axis parallel to the direction of the display panel;
the second electrochromic submodule and the fourth electrochromic submodule are symmetrically distributed relative to the electrochromic device along a symmetry axis perpendicular to the direction of the display panel.
Optionally, the display panel is a liquid crystal display panel or an organic electroluminescent display panel;
when the display panel is a liquid crystal display panel, the visual angle adjusting structure is positioned on one side of a light emergent surface of the liquid crystal display panel or on one side of the liquid crystal display panel departing from the light emergent surface;
when the display panel is an organic electroluminescent display panel, the visual angle adjusting structure is positioned on one side of the light emitting surface of the organic electroluminescent display panel.
Optionally, the display panel includes a plurality of pixel units arranged in an array;
the orthographic projection of the light-transmitting area on the display panel covers one pixel unit;
the orthographic projection of the electrochromic device on the display panel is positioned between the adjacent pixel units, or the orthographic projection covers one pixel unit, or the orthographic projection covers a plurality of pixel units.
Optionally, the electrochromic submodule includes a first conductive layer, an ion storage layer, an electrolyte layer, an electrochromic layer, and a second conductive layer, which are sequentially stacked, where the first conductive layer is disposed near the display panel;
the first conducting layer and the second conducting layer are used for being connected with the control submodule so as to receive the voltage output by the control submodule.
The embodiment of the application provides a display device, which comprises a display module shown in the embodiment.
The embodiment of the application provides a display method of a display module based on the foregoing embodiment, which includes:
when the display module is required to be in a normal display mode, controlling the control sub-module not to apply voltage to the corresponding electrochromic sub-module so as to enable the electrochromic sub-module to be in a light-transmitting state;
and when the display module is required to be in a visual angle adjusting mode, the control sub-module is controlled to apply a preset voltage to the corresponding electrochromic sub-module so as to change the transmittance of the electrochromic sub-module.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
the display module provided by the embodiment of the application comprises a visual angle adjusting structure and a control module, wherein the visual angle adjusting structure comprises a plurality of light transmitting areas and a plurality of visual angle adjusting areas, and electrochromic devices are arranged in the visual angle adjusting areas; since the electrochromic device in the embodiment of the application comprises a plurality of electrochromic sub-modules; the control module comprises a plurality of control sub-modules, the control sub-modules are electrically connected with at least one electrochromic sub-module, and the control sub-modules are used for applying voltage to the corresponding electrochromic sub-modules so as to change the transmittance of the electrochromic sub-modules, so that the display module in the embodiment of the application can automatically switch the display viewing angle, when peeping-proof display is needed, a peep-proof film does not need to be attached any more, the display module can switch the display viewing angle range to be wide, the display angle can be switched at will according to the requirements of users on different occasions, and the peep-proof requirements of the users in different environments are well met; in addition, the embodiment of the application can control the transmittance of the electrochromic submodule by controlling the value of the voltage applied to the electrochromic submodule, so that the brightness of the display module can be automatically controlled.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an electrochromic sub-module included in a display module according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of another display module provided in the embodiment of the present application;
fig. 4 is a schematic structural diagram of another display module provided in the embodiment of the present application;
fig. 5 is a flowchart of a display method of a display module according to an embodiment of the present disclosure;
fig. 6 is a schematic structural view of the display module provided in the embodiment of the present application when the display module has an anti-peeping effect;
fig. 7 is a schematic structural diagram of a display module provided in an embodiment of the present application when the display module has a first display viewing angle;
fig. 8 is a schematic structural diagram of a display module having a second display viewing angle according to an embodiment of the present disclosure.
Description of reference numerals:
11-a display panel; 12-a view angle adjustment structure; 13-a control module; 14-an electrochromic device; 15-a protective layer;
121-a light transmissive region; 122-field of view adjustment;
140-an electrochromic submodule; 130-a control sub-module;
151-first conductive layer; 152-an ion storage layer; 153-an electrolyte layer; 154-an electrochromic layer; 155-a second conductive layer;
141-a first electrochromic submodule; 142-a second electrochromic submodule; 143-a third electrochromic submodule; 144-a fourth electrochromic submodule;
131-a first control submodule; 132-a second control sub-module; 133-a third control sub-module; 134-a fourth control sub-module.
Detailed Description
Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" as used herein may include wirelessly connected. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
Displays are used in various aspects of people's daily life, and different application scenarios have different requirements on the viewing angle of the display, for example, when a user is in an open environment with privacy requirements (such as entering passwords, watching private information and content, or business negotiations), the display needs to be privacy-protected.
Among the prior art, usually realize the peep-proof effect through the attached peep-proof membrane in display surface, but the inventor of this application discovers, the peep-proof display product of prior art can't satisfy user to the demand of peep-proof under the different environment, for example when the user is in the environment that has the demand of sharing, this peep-proof display product can't switch to normal demonstration in order to reach the purpose of sharing, need the user to tear attached peep-proof membrane off artificially this moment, the use is loaded down with trivial details, bring inconvenience for user's use, and tear off the peep-proof membrane for a long time and can reduce the life of peep-proof display product.
In order to solve the above-mentioned deficiencies in the prior art, the present application provides a new display module, and the following detailed description is provided for the technical solution of the present application and how to solve the above-mentioned technical problems with specific embodiments.
As shown in fig. 1, an embodiment of the present application provides a display module, including: a display panel 11, a viewing angle adjusting structure 12 and a control module 13; the viewing angle adjusting structure 12 is located on one side of the display panel 11, and includes a plurality of light transmitting areas 121 and a plurality of viewing angle adjusting areas 122, the light transmitting areas 121 and the viewing angle adjusting areas 122 are alternately arranged, the viewing angle adjusting areas 122 are provided with electrochromic devices 14, and the electrochromic devices 14 include a plurality of electrochromic sub-modules 140; the control module 13 includes a plurality of control sub-modules 130, the control sub-modules 130 are electrically connected to at least one electrochromic sub-module 140, and the control sub-modules 130 are configured to apply a voltage to the corresponding electrochromic sub-modules 140 to change the transmittance of the electrochromic sub-modules 140.
It should be noted that, in the embodiment of the present application, the control submodule 130 is configured to apply a voltage to the corresponding electrochromic submodule 140, specifically, the control submodule 130 is configured to apply a voltage to the electrochromic submodule 140 electrically connected to the control submodule 130, for example: if the control submodule 130 is electrically connected to one electrochromic submodule 140, the control submodule 130 is configured to apply a voltage to the electrochromic submodule 140, and if the control submodule 130 is electrically connected to two electrochromic submodules 140, the control submodule 130 is configured to apply a voltage to the electrically connected two electrochromic submodules 140 at the same time.
Specifically, as shown in fig. 1, each electrochromic device 14 in the embodiment of the present application is described by taking four electrochromic sub-modules 140 as an example, and the control module 13 is described by taking two control sub-modules 130 as an example.
In specific implementation, all the electrochromic submodules 140 located below fig. 1 and all the electrochromic submodules 140 located at the left side of fig. 1 are electrically connected to one of the control submodules 130, and the control submodule 130 applies a first voltage to the electrochromic submodule 140 located below fig. 1 and the electrochromic submodule 140 located at the left side of fig. 1; all the electrochromic sub-modules 140 located above fig. 1 and all the electrochromic sub-modules 140 located on the right side of fig. 1 are electrically connected to another control sub-module 130, the control sub-module 130 applies a second voltage to the electrochromic sub-modules 140 located above fig. 1 and the electrochromic sub-modules 140 located on the right side of fig. 1, the voltage values of the first voltage and the second voltage may be equal or unequal, and the specific values are set according to the actual use environment of the user.
It should be noted that, in the embodiment of the present application, the connection relationship between the control submodule 130 and the electrochromic submodule 140 is not limited to the connection relationship shown in fig. 1, such as: it is also possible that all electrochromic sub-modules 140 on the left side of fig. 1 are electrically connected to one of the control sub-modules 130, and all electrochromic sub-modules 140 on the right side of fig. 1 are electrically connected to the other control sub-module 130.
The display module provided by the embodiment of the application comprises a visual angle adjusting structure 12 and a control module 13, wherein the visual angle adjusting structure 12 comprises a plurality of light transmitting areas 121 and a plurality of visual angle adjusting areas 122, and the visual angle adjusting areas 122 are provided with electrochromic devices 14; since the electrochromic device 14 in the embodiment of the present application includes a plurality of electrochromic submodules 140; the control module 13 comprises a plurality of control sub-modules 130, the control sub-modules 130 are electrically connected with at least one electrochromic sub-module 140, and the control sub-modules 130 are used for applying voltage to the corresponding electrochromic sub-modules 140 to change the transmittance of the electrochromic sub-modules 140, so that the display module in the embodiment of the application can automatically switch the display viewing angle, when peep-proof display is needed, a peep-proof film does not need to be attached any more, the display module can switch the display viewing angle range widely, the display angle can be switched at will according to the requirements of users on different occasions, and the peep-proof requirements of the users in different environments are well met; in addition, the embodiment of the application can control the transmittance of the electrochromic submodule 140 by controlling the value of the voltage applied to the electrochromic submodule 140, so that the brightness of the display module can be automatically controlled.
In a specific implementation manner, as shown in fig. 1, the display module in this embodiment further includes a protective layer 15, the protective layer 15 is located on the side of the viewing angle adjusting structure 12 away from the display panel 11, and the protective layer 15 covers the light-transmitting area 121 and the viewing angle adjusting area 122, of course, when actually designing, the protective layer 15 may also only cover the viewing angle adjusting area 122 to protect the electrochromic device 14 in the viewing angle adjusting area 122. The protective layer 15 in the embodiment of the present application is a transparent film layer, and may be a transparent glass substrate, for example.
Specifically, as shown in fig. 1, the display panel 11 in the embodiment of the present application is a liquid crystal display panel or an organic electroluminescence display panel, and working processes of the liquid crystal display panel and the organic electroluminescence display panel are similar to those of the prior art and are not described herein again. When the display panel 11 is a liquid crystal display panel, the viewing angle adjusting structure 12 is located on one side of the light emitting surface of the liquid crystal display panel, or on one side of the liquid crystal display panel away from the light emitting surface (i.e. may be located between the liquid crystal display panel and the backlight module); when the display panel 11 is an organic electroluminescent display panel, the viewing angle adjusting structure 12 is located on a light emitting surface side of the organic electroluminescent display panel.
Specifically, as shown in fig. 1, the display panel 11 in the embodiment of the present application includes a plurality of pixel units arranged in an array, and the specific arrangement manner of the pixel units is the same as that in the prior art, and is not repeated here; the orthographic projection of the light-transmitting area 121 on the display panel 11 covers one pixel unit; the orthographic projection of the electrochromic device 14 on the display panel 11 is positioned between adjacent pixel units, or the orthographic projection of the electrochromic device 14 on the display panel 11 covers one pixel unit, or the orthographic projection of the electrochromic device 14 on the display panel 11 covers a plurality of pixel units.
Specifically, as shown in fig. 2, the electrochromic submodule 140 in the embodiment of the present application includes a first conductive layer 151, an ion storage layer 152, an electrolyte layer 153, an electrochromic layer 154, and a second conductive layer 155, which are sequentially stacked, where the first conductive layer 151 is disposed near a display panel (not shown in the figure); the first conductive layer 151 and the second conductive layer 155 are used for connecting with the control sub-module 130 to receive the voltage output by the control sub-module 130. The first conductive layer 151 and the second conductive layer 155 in the embodiment of the present application are transparent conductive layers, such as Indium Tin Oxide (ITO) may be selected.
Electrochromism is a phenomenon that the optical properties (reflectivity, transmittance, absorptivity and the like) of a material generate stable and reversible color change under the action of an external electric field, and the electrochromism is represented as reversible change of color and transparency in appearance. The material with electrochromic property is called electrochromic material, and the electrochromic material generates electrochemical oxidation-reduction reaction under the action of an external electric field to obtain lost electrons, so that the color of the material is changed.
Electrochromic materials are classified into inorganic electrochromic materials and organic electrochromic materials, a typical representative of the inorganic electrochromic materials is tungsten trioxide (WO3), and at present, electrochromic devices using WO3 as a functional material have been industrialized. The organic electrochromic material mainly comprises polythiophene and derivatives thereof, viologen, tetrathiafulvalene, metal phthalocyanine compounds and the like.
When the electrochromic submodule 140 in this embodiment of the application is in operation, the control submodule 130 is configured to apply a certain voltage between the first conductive layer 151 and the second conductive layer 155, and the electrochromic layer 154 undergoes an oxidation-reduction reaction under the action of the voltage, so that the color changes; the electrolyte layer 153 is an ion conductive layer and is made of a special conductive material, such as a solution containing lithium perchlorate, sodium perchlorate, or the like, or a solid electrolyte material; the ion storage layer 152 serves to store corresponding counter ions when the electrochromic layer 154 undergoes an oxidation-reduction reaction, and to maintain charge balance of the whole system.
In an alternative implementation, the viewing angle adjusting structure 12 in the embodiment of the present application includes N electrochromic devices 14, each electrochromic device 14 includes N electrochromic submodules 140; the control module 13 comprises N × N control submodules 130, and the control submodules 130 are electrically connected with the electrochromic submodules 140 in a one-to-one correspondence manner; wherein: n is a positive integer greater than or equal to 2, and N is a positive integer greater than or equal to 2; this kind of design in this application embodiment can make the different viewing position of display module assembly have different display visual angles, and then fine user to the demand that shows the visual angle under having satisfied different environments, but this kind of design needs design more control submodule piece 130, and circuit design is complicated relatively.
Specifically, as shown in fig. 3, in the embodiment of the present application, for example, N is equal to 5, N is equal to 4, the control module 13 includes 20 control sub-modules 130, and the control sub-modules 130 are electrically connected to the electrochromic sub-modules 140 in a one-to-one correspondence manner; thus, each electrochromic submodule 140 can be independently controlled, and in specific implementation, switching between multiple different display viewing angles can be realized in each viewing angle adjusting area 122, for example, peep-proof display can be realized in a partial area (such as a central area) of the display module, normal display can be realized in other areas (such as peripheral areas) of the display module, or peep-proof display can be realized in a partial area (such as a left area) of the display module, and normal display can be realized in other areas (such as a right area) of the display module, so that requirements of users on the display viewing angles in different environments are well met.
Further, as shown in fig. 3, in the embodiment of the present application, the magnitude of the transmittance of the electrochromic sub-module 140 can be controlled by controlling the magnitude of the voltage applied to the electrochromic sub-module 140, and the transmittance changes to affect the brightness of the transmitted light, so as to automatically control the brightness of the display module; in particular, a plurality of different display brightness adjustments can be implemented in each viewing angle adjustment area 122, for example, a brighter display can be implemented in a partial area (e.g., a central area) of the display module, and a darker display can be implemented in other areas (e.g., a peripheral area) of the display module, or a brighter display can be implemented in a partial area (e.g., a left area) of the display module, and a darker display can be implemented in other areas (e.g., a right area) of the display module.
As shown in fig. 3, in each electrochromic device 14 according to the embodiment of the present application, the electrochromic sub-modules 140 are symmetrically distributed about the symmetry axis of the electrochromic device 14 (for example, the leftmost four electrochromic sub-modules 140 in fig. 3 are symmetrically distributed about the symmetry axis of the leftmost electrochromic device 14 in fig. 3, and the rightmost four electrochromic sub-modules 140 in fig. 3 are symmetrically distributed about the symmetry axis of the rightmost electrochromic device 14 in fig. 3), so that the light emitted through the electrochromic device 14 can be more uniform.
In another alternative embodiment, each electrochromic device in the embodiments of the present application includes four electrochromic submodules, as shown in fig. 4, each electrochromic device 14 includes a first electrochromic submodule 141, a second electrochromic submodule 142, a third electrochromic submodule 143, and a fourth electrochromic submodule 144; the control module 13 includes a first control submodule 131, a second control submodule 132, a third control submodule 133 and a fourth control submodule 134; the first control submodule 131 is electrically connected with all the first electrochromic submodules 141; the second control submodule 132 is electrically connected with all the second electrochromic submodules 142; the third control sub-module 133 is electrically connected to all of the third electrochromic sub-modules 143; the fourth control sub-module 134 is electrically connected to all of the fourth electrochromic sub-modules 144. The display visual angle of the different viewing positions of display module group department also can be adjusted to this kind of design in this application embodiment, can satisfy under the different environment user to the demand that shows the visual angle, and only need four different control submodule pieces, and circuit design is simple relatively.
Further, as shown in fig. 4, in the embodiment of the present application, the transmittance of the electrochromic sub-module can be controlled by controlling the magnitude of the voltage applied to the electrochromic sub-module, and the transmittance changes to affect the brightness of the transmitted light, so that the brightness of the display module can be automatically controlled; in specific implementation, the display with brighter brightness can be realized in a partial area of the display module (for example, at the corresponding position of the first electrochromic submodule 141 and the second electrochromic submodule 142), and the display with darker brightness can be realized in other areas of the display module (for example, at the corresponding position of the third electrochromic submodule 143 and the fourth electrochromic submodule 144).
As shown in fig. 4, in each electrochromic device of the embodiments of the present application, the first electrochromic submodule 141 and the third electrochromic submodule 143 are symmetrically distributed with respect to the corresponding electrochromic device 14 along a symmetry axis (not shown in the figure) in a direction parallel to the display panel 11 (i.e., a horizontal direction in the figure); the second electrochromic submodule 142 and the fourth electrochromic submodule 144 are symmetrically distributed with respect to the corresponding electrochromic device 14 along a symmetry axis (not shown in the figure) in a direction perpendicular to the display panel 11 (i.e., in a vertical direction in the figure); in this way, the light exiting through the electrochromic device 14 can be made more uniform.
Based on the same inventive concept, the embodiment of the present application further provides a display device, which includes the display module illustrated in the foregoing embodiment. Because the display device includes the display module that the aforesaid embodiment of this application provided, therefore the display device that this application embodiment provided has the same beneficial effect with the display module, and it is no longer repeated here.
Specifically, the display device in the embodiment of the present application may be a display device such as a mobile phone and a notebook computer.
Based on the same inventive concept, an embodiment of the present application further provides a display method based on the display module, as shown in fig. 5, the method includes:
s101, when the display module is required to be in a normal display mode, controlling the control sub-module not to apply voltage to the corresponding electrochromic sub-module so as to enable the electrochromic sub-module to be in a light-transmitting state;
and S102, when the display module is required to be in a visual angle adjusting mode, controlling the control sub-module to apply a preset voltage to the corresponding electrochromic sub-module so as to change the transmittance of the electrochromic sub-module.
Specifically, the electrochromic submodule in the embodiment of the present application can change its transmittance under the action of an external electric field, and the performance is reversible. When the control submodule does not apply voltage to the corresponding electrochromic submodule, the transmittance of the electrochromic submodule is not changed, light can normally pass through, and the display module works in a normal display mode at the moment and does not have a peep-proof effect.
Specifically, as shown in fig. 6, each electrochromic device in the embodiment of the present application includes a first electrochromic submodule 141, a second electrochromic submodule 142, a third electrochromic submodule 143, and a fourth electrochromic submodule 144; continuing to refer to fig. 4, all of the first electrochromic sub-modules 141 are electrically connected to the first control sub-module 131, all of the second electrochromic sub-modules 142 are electrically connected to the second control sub-module 132, all of the third electrochromic sub-modules 143 are electrically connected to the third control sub-module 133, and all of the fourth electrochromic sub-modules 144 are electrically connected to the fourth control sub-module 134.
Specifically, as shown in fig. 4 and 6, when the first control sub-module 131, the second control sub-module 132, the third control sub-module 133, and the fourth control sub-module 134 simultaneously output a preset voltage, the transmittance of the first electrochromic sub-module 141, the second electrochromic sub-module 142, the third electrochromic sub-module 143, and the fourth electrochromic sub-module 144 is changed under the action of the preset voltage, and when the preset voltage is a voltage that causes the first electrochromic sub-module 141, the second electrochromic sub-module 142, the third electrochromic sub-module 143, and the fourth electrochromic sub-module 144 to be in a non-light-transparent state, light emitted from the display panel 11 passes through the first electrochromic sub-module 141, the second electrochromic sub-module 142, the third electrochromic sub-module 143, and the fourth electrochromic sub-module 144 and is blocked and absorbed, and at this time, the display viewing angle can be contracted, the display module achieves the peep-proof effect, and the arrow direction in the figure represents the transmission direction of light.
Specifically, as shown in fig. 4 and 7, when the third control sub-module 133 and the fourth control sub-module 134 simultaneously output a preset voltage and the first control sub-module 131 and the second control sub-module 132 do not output a voltage, the transmittance of the third electrochromic sub-module 143 and the fourth electrochromic sub-module 144 changes under the action of the preset voltage, when the preset voltage is a voltage that causes the third electrochromic sub-module 143 and the fourth electrochromic sub-module 144 to be in a non-transparent state, the light emitted by the display panel 11 is blocked and absorbed when passing through the third electrochromic sub-module 143 and the fourth electrochromic sub-module 144, and since the first control sub-module 131 and the second control sub-module 132 do not output a voltage, the transmittance of the first electrochromic sub-module 141 and the second electrochromic sub-module 142 is not affected, the light emitted by the display panel 11 can directly pass through when passing through the first electrochromic sub-module 141 and the second electrochromic sub-module 142, the direction of the arrows in the figure indicates the direction of propagation of the light; at this time, the display module has a first display visual angle, and under the first display visual angle, the display module has an anti-peeping effect on a user positioned at one side (such as the right side in the figure) of the display module.
Specifically, as shown in fig. 4 and 8, when the second control sub-module 132 and the third control sub-module 133 output a preset voltage at the same time, and the first control sub-module 131 and the fourth control sub-module 134 do not output a voltage, the transmittance of the second electrochromic sub-module 142 and the third electrochromic sub-module 143 changes under the action of the preset voltage, and when the preset voltage is a voltage that causes the second electrochromic sub-module 142 and the third electrochromic sub-module 143 to be in a non-light-tight state, the light emitted from the display panel 11 is blocked and absorbed when passing through the second electrochromic sub-module 142 and the third electrochromic sub-module 143, and since the first control sub-module 131 and the fourth control sub-module 134 do not output a voltage, the transmittance of the first electrochromic sub-module 141 and the fourth electrochromic sub-module 144 is not affected, the light emitted from the display panel 11 can pass through the first electrochromic sub-module 141 and the fourth electrochromic sub-module 144 directly, the direction of the arrows in the figure indicates the direction of propagation of the light; at this time, the display module has a second display viewing angle, and under the second display viewing angle, the display module has an anti-peeping effect on a user positioned at one side (such as the left side in the figure) of the display module.
As shown in fig. 6, 7, and 8, the display module in the embodiment of the present application can automatically adjust the peeping prevention angle by setting the voltage, so that a multi-angle peeping prevention effect can be achieved, and the requirement of a user on peeping prevention in different environments can be well met; and the transmittance of the electrochromic submodule 140 can be controlled by setting the voltage, so that the brightness of the display module can be automatically controlled.
In summary, the application of the embodiment of the present application can at least achieve the following beneficial effects:
the display module provided by the first embodiment of the present application includes a viewing angle adjusting structure 12 and a control module 13, where the viewing angle adjusting structure 12 includes a plurality of light transmitting areas 121 and a plurality of viewing angle adjusting areas 122, and the viewing angle adjusting areas 122 are provided with electrochromic devices 14; since the electrochromic device 14 in the embodiment of the present application includes a plurality of electrochromic submodules 140; the control module 13 comprises a plurality of control sub-modules 130, the control sub-modules 130 are electrically connected with at least one electrochromic sub-module 140, and the control sub-modules 130 are used for applying voltage to the corresponding electrochromic sub-modules 140 to change the transmittance of the electrochromic sub-modules 140, so that the display module in the embodiment of the application can automatically switch the display viewing angle, when peep-proof display is needed, a peep-proof film does not need to be attached any more, the display module can switch the display viewing angle range widely, the display angle can be switched at will according to the requirements of users on different occasions, and the peep-proof requirements of the users in different environments are well met; in addition, the embodiment of the application can control the transmittance of the electrochromic submodule 140 by controlling the value of the voltage applied to the electrochromic submodule 140, so that the brightness of the display module can be automatically controlled.
Secondly, in each electrochromic device 14 in the embodiment of the present application, the electrochromic sub-modules 140 are symmetrically distributed about the symmetry axis of the electrochromic device 14, so that the light emitted from the electrochromic device 14 is more uniform.
Thirdly, the display module in the embodiment of the application can automatically adjust the peeping-proof angle through setting the voltage, so that the multi-angle peeping-proof effect can be realized, and the peeping-proof requirements of users in different environments can be well met; and the transmittance of the electrochromic submodule 140 can be controlled by setting the voltage, so that the brightness of the display module can be automatically controlled.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (10)

1. A display module, comprising:
a display panel;
the visual angle adjusting structure is positioned on one side of the display panel and comprises a plurality of light transmitting areas and a plurality of visual angle adjusting areas, the light transmitting areas and the visual angle adjusting areas are alternately arranged, the visual angle adjusting areas are provided with electrochromic devices, and the electrochromic devices comprise a plurality of electrochromic sub-modules;
and the control module comprises a plurality of control sub-modules, the control sub-modules are electrically connected with at least one electrochromic sub-module, and the control sub-modules are used for applying voltage to the corresponding electrochromic sub-modules so as to change the transmittance of the electrochromic sub-modules.
2. The display module according to claim 1, wherein the viewing angle adjusting structure comprises N electrochromic devices, each electrochromic device comprising N electrochromic sub-modules;
the control module comprises N × N control sub-modules, and the control sub-modules are electrically connected with the electrochromic sub-modules in a one-to-one correspondence manner; wherein:
n is a positive integer greater than or equal to 2, and N is a positive integer greater than or equal to 2.
3. The display module according to claim 2, wherein the electrochromic sub-modules of each electrochromic device are symmetrically distributed about the axis of symmetry of the electrochromic device.
4. The display module of claim 1, wherein each electrochromic device comprises a first electrochromic sub-module, a second electrochromic sub-module, a third electrochromic sub-module, and a fourth electrochromic sub-module;
the control module comprises a first control submodule, a second control submodule, a third control submodule and a fourth control submodule;
the first control sub-module is electrically connected with all the first electrochromic sub-modules;
the second control sub-module is electrically connected with all the second electrochromic sub-modules;
the third control sub-module is electrically connected with all the third electrochromic sub-modules;
the fourth control submodule is electrically connected with all the fourth electrochromic submodules.
5. The display module according to claim 4, wherein in each electrochromic device, the first electrochromic submodule and the third electrochromic submodule are symmetrically distributed with respect to the electrochromic device along a symmetry axis parallel to the display panel;
the second electrochromic submodule and the fourth electrochromic submodule are symmetrically distributed relative to the electrochromic device along a symmetry axis perpendicular to the direction of the display panel.
6. The display module according to any one of claims 1 to 5, wherein the display panel is a liquid crystal display panel or an organic electroluminescent display panel;
when the display panel is a liquid crystal display panel, the visual angle adjusting structure is positioned on one side of a light emergent surface of the liquid crystal display panel or on one side of the liquid crystal display panel departing from the light emergent surface;
when the display panel is an organic electroluminescent display panel, the visual angle adjusting structure is positioned on one side of the light emitting surface of the organic electroluminescent display panel.
7. The display module of claim 6, wherein the display panel comprises a plurality of pixel units arranged in an array;
the orthographic projection of the light-transmitting area on the display panel covers one pixel unit;
the orthographic projection of the electrochromic device on the display panel is positioned between the adjacent pixel units, or the orthographic projection covers one pixel unit, or the orthographic projection covers a plurality of pixel units.
8. The display module of claim 7, wherein the electrochromic submodule comprises a first conductive layer, an ion storage layer, an electrolyte layer, an electrochromic layer and a second conductive layer which are sequentially stacked, and the first conductive layer is arranged close to the display panel;
the first conducting layer and the second conducting layer are used for being connected with the control submodule so as to receive the voltage output by the control submodule.
9. A display device comprising the display module according to any one of claims 1 to 8.
10. A display method based on the display module set of any one of claims 1-8, comprising:
when the display module is required to be in a normal display mode, controlling the control sub-module not to apply voltage to the corresponding electrochromic sub-module so as to enable the electrochromic sub-module to be in a light-transmitting state;
and when the display module is required to be in a visual angle adjusting mode, the control sub-module is controlled to apply a preset voltage to the corresponding electrochromic sub-module so as to change the transmittance of the electrochromic sub-module.
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