CN113064290A - Peep-proof structure, display device and peep-proof method - Google Patents
Peep-proof structure, display device and peep-proof method Download PDFInfo
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- CN113064290A CN113064290A CN202110322094.4A CN202110322094A CN113064290A CN 113064290 A CN113064290 A CN 113064290A CN 202110322094 A CN202110322094 A CN 202110322094A CN 113064290 A CN113064290 A CN 113064290A
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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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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Abstract
The application provides a peep-proof structure, display device and peep-proof method, and this peep-proof structure includes: the light absorption layer is used for absorbing preset light rays in light rays emitted by the light source so that light rays which are not absorbed by the light absorption layer penetrate through the light absorption layer; the light scattering layer and the light absorption layer are arranged in a stacked mode, and light penetrating through the light absorption layer is emitted towards the light scattering layer; when the diffusion layer is in a first state, the diffusion layer transmits light emitted from the light absorbing layer to the diffusion layer; when the light diffusion layer is in the second state, the light diffusion layer diffuses light emitted from the light absorption layer to the light diffusion layer, and the peep-proof structure can realize flexible conversion of the display device between a peep-proof state and a normal display state, so that the peep-proof requirements of users in different environments can be met.
Description
Technical Field
The application relates to the technical field of display, in particular to a peep-proof structure, a display device and a peep-proof method.
Background
The display is used in various aspects of daily life of people, and the requirements of different application occasions on the visual angle of the display are different. For example, when a user is in an open environment with privacy requirements, such as inputting a withdrawal password, viewing private information by public transportation or business negotiation, a narrow viewing angle of the display is required to achieve privacy protection. When a user is in an environment with sharing requirements, for example, when the user watches a display device with others, a wider viewing angle is required to achieve the purpose of sharing. However, the existing peep-proof scheme cannot meet the requirement of users on peep-proof in different environments.
Disclosure of Invention
The embodiment of the application provides a peep-proof structure, a display device and a peep-proof method, which can meet the peep-proof requirements of users in different environments.
In a first aspect, an embodiment of the present application provides a peep-proof structure, including:
the light absorption layer is used for absorbing preset light rays in light rays emitted by the light source so that light rays which are not absorbed by the light absorption layer penetrate through the light absorption layer;
the light scattering layer and the light absorption layer are arranged in a stacked mode, and light penetrating through the light absorption layer is emitted towards the light scattering layer;
when the light diffusion layer is in a first state, the light diffusion layer transmits light emitted from the light absorption layer to the light diffusion layer;
when the diffusion layer is in a second state, the diffusion layer diffuses light emitted from the light absorbing layer to the diffusion layer.
In the peep-proof structure that this application embodiment provided, light-absorbing layer includes light-absorbing portion and printing opacity portion, light-absorbing portion is arranged in absorbing the light source and sends the light of predetermineeing in the light, printing opacity portion is used for seeing through light-absorbing portion non-absorbed light.
In the peep-proof structure that this application embodiment provided, light-absorbing portion includes the sub light-absorbing portion that a plurality of arrays were arranged, the portion that passes through light sets up clearance department between the sub light-absorbing portion.
In the peep-proof structure provided by the embodiment of the application, the material for manufacturing the sub light absorption part is a dam material or a black matrix material.
In the peep-proof structure provided by the embodiment of the application, the thickness of the sub light absorption part is 6-300 microns.
In the peep-proof structure provided by the embodiment of the application, the peep-proof structure further comprises:
a barrier layer disposed between the light absorbing layer and the light diffusing layer;
the flat layer is arranged between the blocking layer and the light scattering layer, and one surface, close to the light scattering layer, of the flat layer is a flat surface.
In the peep-proof structure provided by the embodiment of the application, the light scattering layer comprises a first conductive part, a second conductive part and a light scattering part arranged between the first conductive part and the second conductive part;
the light scattering portion is in a first state when the first conductive portion and the second conductive portion are energized;
when the first conductive part and the second conductive part are not electrified, the light scattering part is in a second state.
In a second aspect, an embodiment of the present application further provides a display device, including:
a backlight module;
the backlight module comprises a backlight module, a peep-proof structure, a light source and a light source, wherein the backlight module is provided with a backlight module, and the peep-proof structure is arranged on the backlight module and is the peep-proof structure according to any embodiment of the application;
the display panel is arranged on one surface of the peep-proof structure, which is far away from the backlight module.
In the display device provided by the embodiment of the application, the display device further includes a processor, and the processor is configured to control the light diffusion layer to be in a first state when receiving an operation of turning on a peep prevention function, so that the light diffusion layer transmits light emitted from the light absorption layer to the light diffusion layer;
the processor is further used for controlling the light diffusion layer to be in a second state when receiving an operation of closing the peep-proof function, so that the light diffusion layer diffuses light emitted from the light absorption layer to the light diffusion layer.
In a third aspect, an embodiment of the present application further provides a peep-proof method applied to a display device, where the display device is the display device according to any embodiment of the present application, and the method includes:
when receiving an operation of starting a peep-proof function, controlling the light diffusion layer to be in a first state so that the light diffusion layer transmits light emitted from the light absorption layer to the light diffusion layer;
when receiving an operation of turning off the peeping prevention function, controlling the light diffusion layer to be in a second state so that the light diffusion layer diffuses light emitted from the light absorption layer to the light diffusion layer.
The embodiment of the application provides a peep-proof structure, includes: the light absorption layer is used for absorbing preset light rays in light rays emitted by the light source so that light rays which are not absorbed by the light absorption layer penetrate through the light absorption layer; the light scattering layer and the light absorption layer are arranged in a stacked mode, and light penetrating through the light absorption layer is emitted towards the light scattering layer; when the diffusion layer is in a first state, the diffusion layer transmits light emitted from the light absorbing layer to the diffusion layer; when the light diffusion layer is in the second state, the light diffusion layer diffuses light emitted from the light absorption layer to the light diffusion layer, and the peep-proof structure can realize flexible conversion of the display device between a peep-proof state and a normal display state, so that the peep-proof requirements of users in different environments can be met.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments are briefly described below. The drawings in the following description are only some embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;
fig. 2 is a first structural schematic view of a peep-proof structure provided in the embodiment of the present application;
fig. 3 is a second structural schematic view of the peep-proof structure provided in the embodiment of the present application;
fig. 4 is a schematic structural view of a third peep-proof structure provided in the embodiment of the present application;
fig. 5 is a schematic flow chart of an anti-peeping method provided in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display device 1000 according to an embodiment of the present disclosure. The display device 1000 may include a backlight module 100, a peep-proof structure 200, and a display panel 300. The peep-proof structure 200 is disposed on the backlight module 100. The display panel 300 is disposed on a side of the anti-peeping structure 200 away from the backlight module 100. It should be noted that the display device 1000 shown in fig. 1 is not limited to the above, and may further include other devices, such as a control circuit, a housing, a camera, an antenna structure, a fingerprint unlocking module, and the like.
In some embodiments, the display panel 300 may be a liquid crystal display panel. The display panel 300 may include a first polarizer, an array substrate, a first alignment film, a liquid crystal layer, a second alignment film, a color film substrate, and a second polarizer, which are stacked on a surface of the privacy protecting structure 200 away from the backlight module 100.
The color film substrate can comprise a black matrix, an RGB color resistance layer and the like. The array substrate may include TFT switches, scan lines, data lines, pixel electrodes, common electrodes, and the like.
The backlight module 100 can be used to provide sufficient light source with uniform brightness and distribution for the lcd panel, so that the lcd panel can normally display images.
Referring to fig. 2, fig. 2 is a first structural schematic view of a peep-proof structure 200 according to an embodiment of the present disclosure. The privacy feature 200 may include a light absorbing layer 10 and a light diffusing layer 20. The light absorbing layer 10 and the light diffusing layer 20 are stacked.
The light absorbing layer 10 can be used to absorb a predetermined light from the light emitted from the light source, so that the light not absorbed by the light absorbing layer 10 can pass through the light absorbing layer 10. The light transmitted through the light absorbing layer 10 is emitted toward the light diffusion layer 20. When the diffusion layer 20 is in the first state, the diffusion layer 20 transmits light emitted from the light absorbing layer 10 to the diffusion layer 20. When the diffusion layer 20 is in the second state, the diffusion layer 20 diffuses light emitted from the light absorbing layer 10 to the diffusion layer 20. When the light emitted from the light source is emitted to the light absorbing layer 10, the light absorbing layer 10 can absorb some light in the light emitted from the light source, and the light in these directions is the predetermined light. When the light diffusion layer 20 is in the first state, the light diffusion layer 20 has a weak light diffusion effect. When the light diffusion layer 20 is in the second state, the light diffusion layer 20 has a strong light diffusion effect.
For example, the light source may be the backlight module 100. The light absorbing layer 10 may be disposed on the backlight assembly 100. The light diffusion layer 20 may be disposed between the light absorbing layer 10 and the display panel 300.
The backlight module 100 may be controlled to emit light, when light emitted from the backlight module 100 passes through the light absorbing layer 10, a predetermined light among the light emitted from the backlight module 100 may be absorbed by the light absorbing layer 10, and light not absorbed by the light absorbing layer 10 among the light emitted from the backlight module 100 may be emitted toward the light diffusion layer 20 through the light absorbing layer 10.
When light emitted from the backlight module 100 and not absorbed by the light absorbing layer 10 passes through the light diffusing layer 20, if the light diffusing layer 20 is in the first state, the light diffusing layer 20 can directly transmit the light emitted from the light absorbing layer 10 to the light diffusing layer 20 because the light diffusing effect of the light diffusing layer 20 is weak. That is, light emitted from the backlight module 100 that is not absorbed by the light absorbing layer 10 is emitted toward the display panel 300 through the light diffusing layer 20. Only the light not absorbed by the light absorbing layer 10 in the light emitted from the backlight module 100 is emitted toward the display panel 300, and the light absorbed by the light absorbing layer 10 in the light emitted from the backlight module 100 is not emitted to the display panel 300, so that the viewing angle can be reduced, and the anti-peeping effect can be achieved. That is, when the content displayed by the display device 1000 is viewed from some angle, the displayed content can be made invisible.
When light emitted from the backlight module 100 and not absorbed by the light absorbing layer 10 passes through the light diffusing layer 20, if the light diffusing layer 20 is in the second state, the light diffusing layer 20 has a strong scattering effect on the light, and the light diffusing layer 20 can diffuse the light emitted from the light absorbing layer 10 to the light diffusing layer 20. That is, the light emitted from the backlight module 100 that is not absorbed by the light absorbing layer 10 is diffused by the light diffusing layer 20 and emitted toward the display panel 300. Since the light emitted from the backlight module 100, which is not absorbed by the light absorbing layer 10, is scattered by the light scattering layer 20, the viewing angle can be increased, and the screen sharing effect can be achieved, that is, the content displayed by the display device 1000 can be seen from any angle at which the screen of the display device 1000 can be seen.
In some embodiments, the light source may also be an OLED display panel. The light absorbing layer 10 may be disposed on the OLED display panel. The light diffusion layer 20 may be disposed on the light absorbing layer 10. When the light diffusion layer 20 is in the first state, the light diffusion layer 20 can directly transmit light which is not absorbed by the light absorption layer 10 in light emitted by the OLED display panel, so that the viewing angle can be reduced, and the anti-peeping effect can be achieved. When the light diffusion layer 20 is in the second state, the light diffusion layer 20 may diffuse light that is not absorbed by the light absorption layer 10 among light emitted by the OLED display panel, so that a viewing angle may be increased, and a screen sharing effect may be achieved.
It should be noted that the above is only an example of the light source, and is not intended to limit the present application.
The embodiment of the application provides a peep-proof structure, includes: the light absorption layer is used for absorbing preset light rays in light rays emitted by the light source so that light rays which are not absorbed by the light absorption layer penetrate through the light absorption layer; the light scattering layer and the light absorption layer are arranged in a stacked mode, and light penetrating through the light absorption layer is emitted towards the light scattering layer; when the diffusion layer is in a first state, the diffusion layer transmits light emitted from the light absorbing layer to the diffusion layer; when the light diffusion layer is in the second state, the light diffusion layer diffuses light emitted from the light absorption layer to the light diffusion layer, and the peep-proof structure can realize flexible conversion of the display device between a peep-proof state and a normal display state, so that the peep-proof requirements of users in different environments can be met.
In some embodiments, the display device 1000 may also include a processor. The processor may be configured to control the light diffusion layer 20 to be in the first state when receiving an operation to turn on the peep prevention function, so that the light diffusion layer 20 transmits light emitted from the light absorption layer 10 to the light diffusion layer 20. The processor may also be configured to control the light diffusion layer 20 to be in the second state when receiving an operation to turn off the peeping prevention function, so that the light diffusion layer 20 diffuses light emitted from the light absorption layer 10 to the light diffusion layer 20.
Specifically, the keys for turning on/off the peep-proof function can be displayed on the display interface of the display device 1000, and the physical keys on the display device 1000 can also be multiplexed to have the function of turning on/off the peep-proof function; when a user triggers a key for starting the peep-proof function, the processor receives the operation for starting the peep-proof function; when the user triggers the button for closing the peep-proof function, the processor receives the operation for closing the peep-proof function.
Referring to fig. 3, fig. 3 is a second structural schematic view of a peep-proof structure according to an embodiment of the present disclosure. In some embodiments, light absorbing layer 10 includes a light absorbing portion 11 and a light transmitting portion 12. The light absorbing part 11 is used for absorbing preset light rays in the light emitted by the light source. The light-transmitting portion 12 transmits light that is not absorbed by the light-absorbing portion 12. That is, the light-transmitting portion 12 serves to transmit light, which is not absorbed by the light-absorbing portion 11, among light emitted from the light source.
Specifically, when the light emitted from the backlight module 100 is emitted toward the light diffusion layer 20 through the light absorption layer 10, a portion of the light emitted from the backlight module 100 needs to pass through the light absorption portion 11, and the light absorption portion 11 can absorb the portion of the light passing through the light absorption portion, where the portion of the light can be a predetermined light.
In some embodiments, the light absorbent portion 11 may include a plurality of sub light absorbent portions 111 disposed at intervals. The sub light absorption portions 111 may be arranged in the same or similar manner as the pixel units in the display panel 300. The light-transmitting portion 12 may be disposed at a gap between the sub light-absorbing portions 111. The thickness t of the sub light absorption portion 111 may be 6 to 300 micrometers.
Among them, the thicker the thickness of the sub light absorption portion 111 is, the better the peep-proof effect is, and therefore, in practical application, the thickness of the sub light absorption portion 111 can be set according to the specific peep-proof requirement. Specifically, in order to achieve a relatively good peep-proof effect, the thickness t of the sub light absorption portion 111 may be 30 to 300 micrometers.
In some embodiments, the sub light absorbing parts 111 may be arranged in such a manner that the edges are gradually thinned toward the center.
In other embodiments, each of the sub light absorbing parts 111 may have an arc-shaped or trapezoidal cross-sectional shape, and the sub light absorbing parts 111 having the arc-shaped or trapezoidal cross-sectional shape may have a relative height lower than that of the sub light absorbing parts 111 having the rectangular cross-sectional shape when privacy protection is achieved for the same viewing angle range, compared to the rectangular shape, so that the overall thickness of the display device is reduced and the display device is convenient to carry.
The material for forming the sub light absorption portion 111 may include a light curing material such as a Black Matrix (BM) material or a Bank (Bank) material. Wherein, the dam material is generally applied in the field of quantum dot display or organic light emitting display. In the present application, the dam material can be applied to the field of liquid crystal displays. The material for forming the light-transmitting portion 12 may include a color resist material for forming a white sub-pixel, a Post Spacer (PS) material, or a transparent material such as a white dam material. The material for forming the light diffusion layer 20 may include a polymer network liquid crystal or a polymer dispersed liquid crystal, which can diffuse the received light in one state and directly transmit the received light in another state.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a third peep-proof structure according to an embodiment of the present application. The privacy feature 200 can also include a barrier layer 30 and a planar layer 40. The barrier layer 30 is disposed between the light absorbing layer 10 and the light diffusing layer 20. The planarization layer 40 is disposed between the barrier layer 30 and the light diffusion layer 20. The side of the planarization layer 40 adjacent to the light-diffusing layer 20 is a flat surface, so that a flat environment can be provided for the film layer structure disposed on the planarization layer 40.
The material for manufacturing the first substrate 50 and the second substrate 60 may include glass or plastic. Glass or plastic is required to have high light transmittance.
The light diffusion layer 20 may include a first conductive portion 21, a second conductive portion 22, and a light diffusion portion 23. The light scattering portion 23 is provided between the first conductive portion 21 and the second conductive portion 22. When the first conductive part 21 and the second conductive part 22 are energized, the light scattering part 23 is in a first state; when the first conductive portion 21 and the second conductive portion 22 are not energized, the light scattering portion 23 is in the second state.
Specifically, when it is necessary to realize the peep-proof function, a certain voltage may be applied to the first conductive portion 21 and the second conductive portion 22 so that the light scattering portion 23 is in the second state, such as the transparent state. When the light scattering portion 23 is in a transparent state, the light scattering portion 23 has a weak light scattering effect, and cannot scatter the light emitted from the light absorbing layer 10 to the light scattering portion 23, and only the light emitted from the light absorbing layer 10 to the light scattering portion 23 can be transmitted, so that the viewing angle can be reduced, and the peep-proof effect can be achieved. Wherein the voltage applied to the first conductive part 21 and the second conductive part 22 ranges from 3V to 100V.
When it is not necessary to turn on the peep prevention function, no voltage may be applied to the first conductive portion 21 and the second conductive portion 22 so that the light scattering portion 23 is in a first state, such as a mist state. When the light scattering part 23 is in a fog state, the light scattering part 23 has a strong light scattering effect, and can scatter light emitted from the light absorbing layer 10 to the light scattering part 23, so that the viewing angle is increased, and the purpose of screen sharing is achieved.
The material for forming the first conductive part 21 and the second conductive part 22 may include a transparent electrode material. For example, the material for forming the first conductive part 21 and the second conductive part 22 may include indium tin oxide, indium zinc oxide, indium gallium zinc oxide, or aluminum-doped zinc oxide material. The material for making the light scattering portion 23 may include polymer network liquid crystal, polymer dispersed liquid crystal, or the like.
In some embodiments, when the front and the back of the display device are both provided with the backlight module and the display panel, that is, the dual-sided screen, the peep-proof structure according to any of the above embodiments may be provided between the backlight module and the display panel that are provided on the front of the display device, and the peep-proof structure according to any of the above embodiments may also be provided between the backlight module and the display panel that are provided on the back of the display device.
Referring to fig. 5, fig. 5 is a schematic flow chart of an anti-peeping method according to an embodiment of the present disclosure. The peep-proof method can be applied to the display device 1000 including the peep-proof structure 200 according to any one of the above embodiments. The process may include:
101. when receiving the operation of starting the peeping-proof function, the light diffusion layer is controlled to be in a first state, so that the light diffusion layer transmits the light emitted from the light absorption layer to the light diffusion layer.
102. When receiving the operation of closing the peeping prevention function, the light diffusion layer is controlled to be in the second state so as to diffuse the light emitted from the light absorption layer to the light diffusion layer.
Specifically, the keys for turning on/off the peep-proof function can be displayed on the display interface of the display device 1000, and the physical keys on the display device 1000 can also be multiplexed to have the function of turning on/off the peep-proof function; when a user triggers a key for starting the peep-proof function, the operation for starting the peep-proof function is received; when the user triggers the button for closing the peep-proof function, the operation for closing the peep-proof function is received.
In some embodiments, the light source may be a backlight module, and the process 102 may include: when receiving the operation of closing the peep-proof function, detecting whether the brightness of the light emitted by the backlight module is greater than the preset brightness; if the brightness of the light emitted by the backlight module is not greater than the preset brightness, increasing the voltage applied to the backlight module so as to enable the light emitted by the backlight module to be greater than the preset brightness; and when the light emitted by the backlight module is greater than the preset brightness, controlling the light diffusion layer to be in a second state.
Specifically, because light passes through the scattering after, can make the luminance of light reduce, for avoiding the display effect poor, can set up a default brightness to set up when the luminance of the light that sends at backlight unit is greater than this default brightness, just close the peep-proof function. And when the brightness of the light emitted by the backlight module is not greater than the preset brightness, increasing the voltage applied to the backlight module so as to enable the light emitted by the backlight module to be greater than the preset brightness.
The peeping prevention method provided by the embodiment of the application comprises the following steps: when receiving an operation of turning on a peep-proof function, controlling the light diffusion layer to be in a first state so as to transmit light emitted from the light absorption layer to the light diffusion layer; when receiving the operation of closing the peeping-proof function, the light-diffusing layer is controlled to be in the second state so as to diffuse the light emitted from the light-absorbing layer to the light-diffusing layer, so that when receiving the corresponding operation, the display device is controlled to be switched between the peeping-proof state or the policy display state, and further the requirement of users on peeping prevention in different environments can be met.
The peep-proof structure, the display device and the peep-proof method provided by the embodiment of the application are introduced in detail, a specific example is applied in the description to explain the principle and the implementation mode of the application, and the description of the embodiment is only used for helping to understand the technical scheme and the core idea of the application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A privacy construction, comprising:
the light absorption layer is used for absorbing preset light rays in light rays emitted by the light source so that light rays which are not absorbed by the light absorption layer penetrate through the light absorption layer;
the light scattering layer and the light absorption layer are arranged in a stacked mode, and light penetrating through the light absorption layer is emitted towards the light scattering layer;
when the light diffusion layer is in a first state, the light diffusion layer transmits light emitted from the light absorption layer to the light diffusion layer;
when the diffusion layer is in a second state, the diffusion layer diffuses light emitted from the light absorbing layer to the diffusion layer.
2. The privacy construction of claim 1, wherein the light absorbing layer comprises a light absorbing portion for absorbing predetermined light of light emitted from the light source and a light transmitting portion for transmitting light not absorbed by the light absorbing portion.
3. The privacy construction of claim 2, wherein the light-absorbing portion comprises a plurality of sub light-absorbing portions arranged in an array, the light-transmitting portions being disposed at gaps between the sub light-absorbing portions.
4. The privacy construction of claim 3, wherein the sub-absorbent portion is made of a dam material or a black matrix material.
5. The privacy structure of claim 3 or 4, wherein the sub-absorbent portions have a thickness of 6 to 300 microns.
6. The privacy structure of claim 1, further comprising:
a barrier layer disposed between the light absorbing layer and the light diffusing layer;
the flat layer is arranged between the blocking layer and the light scattering layer, and one surface, close to the light scattering layer, of the flat layer is a flat surface.
7. The privacy structure of claim 1, wherein the light dispersing layer comprises a first electrically conductive portion, a second electrically conductive portion, and a light dispersing portion disposed between the first and second electrically conductive portions;
the light scattering portion is in a first state when the first conductive portion and the second conductive portion are energized;
when the first conductive part and the second conductive part are not electrified, the light scattering part is in a second state.
8. A display device, comprising:
a backlight module;
a peep-proof structure disposed on the backlight module, wherein the peep-proof structure is as set forth in any one of claims 1 to 7;
the display panel is arranged on one surface of the peep-proof structure, which is far away from the backlight module.
9. The display device according to claim 8, further comprising a processor for controlling the light diffusion layer to be in a first state so that the light diffusion layer transmits light emitted from the light absorbing layer to the light diffusion layer upon receiving an operation to turn on a peep prevention function;
the processor is further used for controlling the light diffusion layer to be in a second state when receiving an operation of closing the peep-proof function, so that the light diffusion layer diffuses light emitted from the light absorption layer to the light diffusion layer.
10. A peep-proof method applied to a display device, wherein the display device is the display device according to claim 8 or 9, and the method comprises the following steps:
when receiving an operation of starting a peep-proof function, controlling the light diffusion layer to be in a first state so that the light diffusion layer transmits light emitted from the light absorption layer to the light diffusion layer;
when receiving an operation of turning off the peeping prevention function, controlling the light diffusion layer to be in a second state so that the light diffusion layer diffuses light emitted from the light absorption layer to the light diffusion layer.
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Application publication date: 20210702 |