CN112162441B - Peep-proof display panel, preparation method thereof, peep-proof display device and method - Google Patents
Peep-proof display panel, preparation method thereof, peep-proof display device and method Download PDFInfo
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Classifications
-
- 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
-
- 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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
-
- 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
- G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
-
- 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
Abstract
The embodiment of the application discloses a peep-proof display panel, a preparation method thereof, a peep-proof display device and a peep-proof display method. In an embodiment, the peep-proof display panel includes a display module and an electrochromic material film disposed on a light emitting side of the display module, the display module includes a substrate and pixel units arranged on the substrate in an array, wherein the electrochromic material film is provided with a first opening arranged on the substrate in an array, a front projection of the first opening on the substrate covers a front projection of the pixel units on the substrate, and the electrochromic material film changes light transmittance in response to an applied voltage so as to change an emergence angle of light emitted by the pixel units. The peep-proof display panel can effectively realize peep prevention.
Description
Technical Field
The application relates to the field of display technology. More particularly, to a peep-proof display panel, a method for manufacturing the same, a peep-proof display device and a method.
Background
Along with the development of technology, there is an increasing demand for devices with display devices such as personal mobile terminals (e.g., mobile phones, mobile notebooks, etc.), PC computers, ATM machines, etc., but when these devices are used in a relatively private practical environment, no bystanders are required to snoop the content of the display interface, and the information may leak out, resulting in that the privacy of themselves is not protected, which is particularly disadvantageous for security related things, and inconvenience is brought to users.
Disclosure of Invention
The invention aims to provide a peep-proof display panel, a preparation method thereof, a peep-proof display device and a peep-proof display method, which are used for solving at least one of the problems existing in the prior art.
In order to achieve the above purpose, the following technical scheme is adopted in the application:
the first aspect of the present application provides a peep-proof display panel, this peep-proof display panel includes the display module assembly, the display module assembly includes the base plate and is in array arrangement pixel unit on the base plate, in addition, this peep-proof display panel still includes:
the electrochromic material film is arranged on the light emitting side of the display module, wherein the electrochromic material film is provided with first openings which are arranged in an array, the orthographic projection of the first openings on the substrate covers the orthographic projection of the pixel units on the substrate, and the electrochromic material film responds to the applied voltage to change the light transmittance and thus the light emitting angle of the light emitted by the pixel units.
According to the peep-proof display panel provided by the first aspect of the application, the transmittance of the electrochromic material can be controlled by controlling the voltage value of the applied electrochromic material film so as to control the angle (namely the angle of view) of emergent light of the pixel unit, thereby controlling the angle of view of the whole display panel, achieving the purpose of preventing others from peeping the screen, protecting the privacy of a user and avoiding the occurrence of confidential leakage and other situations caused by peeping the screen by the other people.
In one possible implementation, the peep-proof display panel further includes:
and a light-transmitting conductive film disposed between the display module and the electrochromic material film for applying the voltage to the electrochromic material film.
In this implementation, the voltage applied to the electrochromic material film can be controlled more precisely by applying a voltage using a light-transmitting conductive film having better conductivity.
In one possible implementation manner, the conductive film is provided with second openings arranged in an array, and the orthographic projection of the second openings on the substrate corresponds to the orthographic projection of the first openings on the substrate.
According to the implementation mode, the conductive film is provided with the opening at the position corresponding to the opening of the electrochromic material film, so that the influence of the conductive film on the light emission of the pixel unit can be completely eliminated.
In one possible implementation, the material of the conductive film is graphene.
In the implementation mode, the graphene has good conductivity and uniform texture, so that the graphene is selected as the material of the conductive film, the thickness of the conductive film layer structure can be reduced, and the light transmittance of the conductive film is ensured.
The second aspect of the application provides a peep-proof display device, which comprises the peep-proof display panel, a memory, a user instruction input module and a control module, wherein the peep-proof display panel is provided in the first aspect of the application;
wherein,
a memory for storing a first correspondence of an applied voltage and light transmittance of the electrochromic material film;
the user instruction input module is used for receiving a control instruction input by a user;
and the control module is used for changing the applied voltage according to the control instruction and the first corresponding relation so as to change the light transmittance.
According to the peep-proof display device provided by the second aspect of the application, the control module can change and control the voltage applied to the electrochromic material film based on the control instruction input by the user, so that the autonomous switching of the peep-proof mode and the non-peep-proof mode of the user is realized, and the requirement of the user on peep-proof in different environments is met.
In a third aspect, the present application provides a peep-proof display device, including: the peep-proof display panel, the memory, the detection module and the control module provided by the first aspect of the application;
wherein the memory is used for storing a first correspondence between the applied voltage and the light transmittance of the electrochromic material film;
the detection module is used for sending a control instruction when detecting that other personnel except the user using the peep-proof display device enter a preset detection range of the peep-proof display panel;
the control module is used for changing the applied voltage according to the control instruction and the first corresponding relation so as to change the light transmittance.
According to the peep-proof display device provided by the third aspect of the application, the control module can generate the control instruction to control the voltage applied to the electrochromic material film based on the detection result, so that automatic switching between the peep-proof mode and the non-peep-proof mode is realized, and the requirements of users on peep-proof under different environments are met.
In one possible implementation of the present invention,
the detection module is also used for determining the distance and the angle between the other personnel and the peep-proof display panel after detecting that the other personnel enter the preset detection range;
the memory is also used for storing a second corresponding relation between the distance and the angle and the voltage;
the control module is used for changing the applied voltage according to the control instruction and the second corresponding relation so as to change the light transmittance.
According to the implementation mode, the distance and the angle between other people and the display device in the preset detection range are further detected, so that the voltage applied to the electrochromic material film is controlled based on the detection result of the distance and the angle between the other people and the display device, the automatic switching of different peeping-prevention grades in the peeping-prevention mode is realized, and the actual peeping-prevention requirement is met.
A fourth aspect of the present application provides a peep-proof display method based on the peep-proof display device provided in the second aspect of the present application, where the peep-proof display method includes:
the user instruction input module receives a control instruction;
and the control module changes the applied voltage according to the control instruction and the corresponding relation so as to change the light transmittance.
A fifth aspect of the present application provides a peep-proof display method based on the peep-proof display device provided in the third aspect of the present application, where the peep-proof display method includes:
the detection module detects whether other people enter a preset detection range of the peep-proof display panel;
if not, a first control instruction is sent to the control module to adjust the voltage so that the electrochromic material film is in a transparent state;
and if so, sending a second control instruction to the control module to adjust the voltage so as to reduce the light transmittance of the electrochromic material film.
In one possible implementation manner, the detection module detects a distance and an angle between the other person and the peep-proof display panel after entering the preset detection range;
the control module changes the applied voltage according to the second control instruction and the second corresponding relation so as to change the light transmittance.
A sixth aspect of the present application provides a method for manufacturing the peep-proof display panel provided in the first aspect of the present application, where the method includes:
forming a display module on a substrate, wherein the display module comprises pixel units arranged in an array;
forming an electrochromic material film on the light emitting side of the display module;
patterning the electrochromic material film to form first openings which are arranged in an array mode, wherein orthographic projection of the first openings on the substrate covers orthographic projection of the pixel units on the substrate.
The preparation method of the peep-proof display panel provided by the sixth aspect of the application is simple in process, low in cost and easy to realize.
In one possible implementation, the display module is an OLED display module, wherein the electrochromic material film is formed on an encapsulation layer of the OLED display module; or alternatively
The display module is an LCD display module, wherein the electrochromic material film is formed on a cover plate of the LCE display module.
The realization mode provides a preparation mode for realizing peeping prevention of the OLED display module and the LCD display module respectively, and the preparation mode is simple in process and easy to realize.
The beneficial effects of this application are as follows:
according to the technical scheme, the transmittance of the electrochromic material can be controlled by controlling the voltage value of the electrochromic material film, so that the angle (namely the angle of view) of emergent light of the pixel unit is controlled, the angle of view of the whole display panel is controlled, the purpose of preventing others from peeping the screen is achieved, the privacy of a user is protected, and the situations that the user peeps the screen by others to produce confidential leakage and the like are avoided.
Drawings
The following detailed description of the embodiments of the present application is provided in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a peep-proof display device according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a peep-proof display panel according to an embodiment of the present application.
Fig. 3 is a schematic diagram of the operation of the peep-proof display panel according to an embodiment of the present application.
Fig. 4 is a schematic diagram of the operation of the peep-proof display panel according to an embodiment of the present application.
Fig. 5 shows a schematic structural diagram of a conductive film according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a peep-proof display device according to another embodiment of the present application.
Fig. 7 is a flowchart illustrating a preparation process of a peep-proof display panel according to an embodiment of the present application.
Reference numeral 1, electrochromic material film material; 2. a substrate; 3. a pixel list; 4. a conductive film; 10. a first opening; 40. and a second opening.
Detailed Description
In order to more clearly illustrate the present application, the present application is further described below with reference to examples and drawings. Like parts in the drawings are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is intended to be illustrative, and not restrictive, and that this invention is not to be limited to the specific embodiments shown.
The display is applied to various aspects of daily life of people, and the requirements of different application scenes on the viewing angle of the display are different, for example, when a user is in an open environment with security requirements (such as inputting a password, watching private information and content or negotiating business), the display is required to be peep-proof to achieve the purpose of protecting privacy.
In the prior art, the purpose of peeping prevention is usually achieved by attaching a peeping prevention sheet to a display, but the mode aims at the whole display, and when a user is in an environment with sharing requirements, for example, the user watches the display equipment together with the user, the normal display cannot be switched to achieve the purpose of sharing. That is, the existing peep-proof display device cannot meet the peep-proof requirements of users in different environments.
To solve the above problems, as shown in fig. 1, one embodiment of the present application provides a peep-proof display device, which includes: the device comprises an anti-peeping display panel, a memory, a user instruction input module and a control module;
as shown in fig. 2, the peep-proof display panel includes a display module and an electrochromic material film 1, the display module includes a substrate 2 and pixel units 3 arranged on the substrate in an array, the electrochromic material film 1 is provided with first openings 10 arranged in an array, front projection of the first openings 10 on the substrate 2 covers front projection of the pixel units 3 on the substrate 2, and the electrochromic material film 1 changes light transmittance in response to an applied voltage so as to change an emergence angle of light emitted by the pixel units 3. Wherein the orthographic projection of the first opening 10 on the substrate 2 covers the orthographic projection of the pixel unit 3 on the substrate 2 comprises: the orthographic projection of the first opening 10 on the substrate 2 corresponds to the orthographic projection of the pixel unit 3 on the substrate 2, and the orthographic projection of the first opening 10 on the substrate 2 includes both the orthographic projection of the pixel unit 3 on the substrate 2 (or the orthographic projection of the pixel unit 3 on the substrate 2 includes the orthographic projection of the first opening 10 on the substrate 2).
It should be noted that, in the embodiment, the pixel unit 3 includes at least a pixel layer and a light emitting layer related to the pixel layer, for example, for an OLED (such as a mobile phone screen) with a display structure RGBW, the pixel unit 3 corresponds to any one or any combination of an R pixel (red sub-pixel) and a light emitting film layer related to the R pixel, a G pixel (green sub-pixel) and a light emitting film layer related to the G pixel, a B pixel (blue sub-pixel) and a light emitting film layer related to the B pixel, and a W pixel (white sub-pixel) and a light emitting film layer related to the W pixel.
It is easily understood by those skilled in the art that the pixel unit 3 according to the above description may be any combination of a plurality of sub-pixels and light emitting film layers corresponding thereto, and for example, one pixel unit 3 may include a plurality of R pixels and light emitting film layers related to the R pixels.
Similarly, for an LCD screen with RGB display structure, the pixel unit 3 is a combination of any one of the red filter layer, the green filter layer, and the blue filter layer surrounding the black matrix in the color film substrate and the backlight.
I.e. the pixel unit 3 may be a single sub-pixel or a combination of sub-pixels.
The electrochromic refers to a phenomenon that the optical properties (such as reflectivity, transmittance, absorptivity, etc.) of a material change in color stably and reversibly under the action of an applied electric field, and is expressed as a reversible change in color and transmittance in appearance. Materials having electrochromic properties are referred to as electrochromic materials, and films made from electrochromic materials are referred to as electrochromic films.
The electrochromic material layer may include an inorganic metal oxide. For example, tungsten oxide (WO 3 ) Niobium oxide (Nb) 2 O 5 ) Titanium oxide (TiO) 2 ) Molybdenum oxide (MoO) 3 ) Copper oxide (CuO), chromium oxide (Cr) 2 O 3 ) Manganese oxide (Mn) 2 O 3 ) Vanadium oxide (V) 2 O 5 ) Cobalt oxide (Co) 2 O 3 ) Nickel oxide (Ni) 2 O 3 ) And the like, and may be lithium, sodium, potassium, vanadium or titanium doped inorganic metal oxides of the above-mentioned variety, or a mixture of lithium, sodium, potassium, vanadium or titanium doped inorganic metal oxides. The inorganic metal oxide has better electrochromic effect, and the electrochromic color of the electrochromic material layer can be controlled by selecting different inorganic metal oxides.
The memory stores a first correspondence between the applied voltage and the transmittance of the electrochromic material film 1;
the first correspondence between the applied voltage and the transmittance of the electrochromic material film 1 is determined based on the material selected for the electrochromic material film 1, for example, the transmittance of some electrochromic materials decreases with increasing applied voltage, and conversely, the transmittance of some electrochromic material films 1 decreases with decreasing applied voltage. That is, increasing the voltage decreases the light transmittance of the electrochromic material film 1. Decreasing the voltage, the transmittance of the electrochromic material film 1 increases; alternatively, decreasing the voltage decreases the transmittance of the electrochromic material film 1, increasing the voltage increases the transmittance of the electrochromic material film 1.
In a specific example, the working principle of the peep-proof display panel is described with reference to an actual application scenario:
the peep-proof display device provided in this embodiment will be described by taking an example in which the transmittance of the electrochromic material film 1 decreases when the voltage is increased:
as shown in fig. 3, for a single pixel unit, when no voltage is applied to the electrochromic material film 1, the pixel unit 3 normally emits light at an emission angle θ 1 (angle of view is θ 1 ) In theory, the human eye can see the display content within the irradiation range of the light emitted from the pixel unit 3 (however, the distance between the human eye and the display needs to be considered, and the display content cannot be seen clearly if the distance is too far). In this example, taking the position of the human eye as an example at a in the figure: in the normal display mode, no voltage is applied to the electrochromic material film 1, the electrochromic material film 1 has high light transmittance, and the pixel unit 3 emits light in a fully transparent stateThe human eyes at the position A can clearly see the display content of the display when the light is emitted normally; when a voltage is applied to the electrochromic material film 1, the transmittance of the electrochromic material film 1 decreases, and at this time, the outgoing light is affected by the electrochromic material film 1, and the substantial visual angle is reduced, for example, by θ in the figure 1 Become theta in the figure 2 The real content (such as a front view angle) can be seen clearly only from a smaller range, other angles are blurred, and the imaging at the position A becomes blurred (such as brightness is reduced and even light is completely blocked due to light transmittance reduction, so that the human eyes at the position A cannot see the display content clearly, and the like), thereby achieving the aim of peeping prevention. When the voltage applied to the electrochromic material film 1 is controlled so that the electrochromic material film 1 becomes completely opaque, no emergent light will be received at the position A, the screen seen by the human eye at the position A is a black screen, and the peep-proof level at the moment is the highest.
Furthermore, when the viewing angle of each pixel unit 1 becomes smaller, the viewing angle of the whole display panel becomes smaller, so that the purpose of preventing other people from peeping the screen is achieved, the privacy of the user is protected, and the occurrence of confidential leakage and the like caused by the peeping of the user by other people is avoided.
The electrochromic material film 1 itself has conductivity, but in order to more precisely control the voltage applied to the electrochromic material film 1, as shown in fig. 5, the privacy display panel further includes a light-transmitting conductive film 4 disposed between the display module and the electrochromic material film 1 in some embodiments. The conductive film 4 may be provided on the surface of the electrochromic material film 1 near the display module side, and the voltage applied to the electrochromic material film 1 may be more precisely controlled by providing the conductive film 4 on the electrochromic material film 1 side.
In some embodiments, the conductive film 4 is provided with second openings 40 arranged in an array, and the orthographic projection of the second openings 40 on the substrate 2 corresponds to the orthographic projection of the first openings 10 on the substrate 2. That is, the conductive film 4 provided on the surface of the electrochromic material film 1 is provided with the second opening 40 at the position corresponding to the first opening 10 of the electrochromic material film 1, and the conductive film 4 is provided with the opening at the position corresponding to the opening of the electrochromic material film 1, so that the influence of the conductive film 4 on the light emission of the pixel unit 3 can be completely eliminated.
In some embodiments, the material of the conductive film 4 is graphene.
Since graphene has good conductivity and uniform texture, the selection of graphene as the material of the conductive film 4 can reduce the thickness of the conductive film layer structure and increase the light transmittance of the conductive film 4.
According to the peep-proof display device provided by the embodiment, the voltage applied to the electrochromic material film can be changed and controlled by the control module based on the control instruction input by the user, so that the autonomous switching of the peep-proof mode and the non-peep-proof mode of the user is realized, and the peep-proof requirements of the user under different environments are met.
In a specific example, the peep-proof display device provided in this embodiment will be described taking the case where the transmittance of the electrochromic material film 1 decreases when the voltage is increased as an example:
when a user enters a public place, such as a bus or a subway, and other people intensively, mobile equipment such as a mobile phone, a tablet and the like is often used for eliminating time, the user can input a control instruction for switching to the peep-proof mode through a user instruction input module when watching relatively private content, the control module increases the voltage applied to the electrochromic material film according to the control instruction, the transmittance of the electrochromic material film 1 is reduced to become an opaque state, the emergent light of the pixel unit 3 cannot pass through the electrochromic material film 1, at the moment, the field angle of the emergent light of the pixel unit 3 is influenced by the electrochromic material film to be reduced, only the eyes of the user (namely the user himself) right opposite to the display screen can see the display content clearly, and other people cannot see the screen clearly, so that the peep-proof purpose is achieved.
When a user needs to switch the mobile device from the peep-proof mode to the normal mode (non-peep-proof mode), a control instruction for switching to the normal mode is input through the user instruction input module, the control module stops applying a voltage to the electrochromic material film 1 according to the control instruction, the transmittance of the electrochromic material film 1 is increased to restore a full light transmission state, the outgoing light of the pixel unit 3 can pass through the electrochromic material film 1, at the moment, the field angle of the outgoing light of the pixel unit 3 is restored to the maximum under the influence of the electrochromic material film 1, and the mobile device is switched from the peep-proof display mode to the normal mode.
In this embodiment, the control module may change and control the voltage applied to the electrochromic material film 1 based on the control instruction input by the user, so as to implement autonomous switching between the peep-proof mode and the non-peep-proof mode by the user, and meet the requirements of the user for peep-proof in different environments.
It should be noted that, the user instruction input module may be software, and the control instruction may be sent to the control module by configuring a corresponding program, or may be hardware, for example, in a form of a mechanical knob or a physical key disposed on the peep-proof display device, and the control instruction may be sent to the control instruction by the operation of rotating the knob or the key by the user. The control module can be a single chip microcomputer, a processor and other devices with control performance.
Another embodiment of the present application provides a peep-proof display method based on the foregoing embodiment, where the peep-proof display method includes:
the user instruction input module receives a control instruction sent by a user;
the control module changes the voltage applied to the electrochromic material film according to the control instruction sent by the user and the first corresponding relation prestored in the memory so as to change the light transmittance of the electrochromic material film.
In the peep-proof display method provided by the embodiment, the control module can change and control the voltage applied to the electrochromic material film based on the control instruction input by the user, so that the autonomous switching of the peep-proof mode and the non-peep-proof mode of the user is realized, and the peep-proof requirements of the user under different environments are met.
It should be noted that, the principles and the workflow of the peep-proof display method provided in the present embodiment are similar to those of the peep-proof display device provided in the foregoing embodiment, and the relevant portions may refer to the foregoing description and are not repeated herein.
In practical application scenarios, when a user uses a mobile device, the user is very easy to immerse in the mobile device, and even if people walk around, the user is not aware of the mobile device, so that besides the mode switching of the peep-proof display device is realized by manually inputting a control instruction, a technology capable of preventing privacy from being leaked and the like under the condition that the personnel are not aware of the mobile device is still needed.
Thus, as shown in fig. 6, another embodiment of the present application provides a peep-proof display device capable of realizing self-detection of the display device, the peep-proof display device comprising:
the anti-peeping display panel, the memory, the detection module and the control module, wherein the structure and the function of the anti-peeping display panel are similar to those of the anti-peeping display panel in the embodiment;
the memory stores a first correspondence relation between the applied voltage and the transmittance of the electrochromic material film;
the detection module is used for sending a control instruction when detecting that other personnel except a user using the peep-proof display device enter a preset detection range of the peep-proof display panel;
the control module is used for changing the applied voltage according to the control instruction and the first corresponding relation so as to change the light transmittance of the electrochromic material film.
It should be noted that, detection may be implemented by using image acquisition in combination with image processing (face/human body recognition, etc.), for example, face/human body recognition based on artificial intelligence technology.
In a specific example, the light transmittance of the electrochromic material film 1 is reduced by increasing the voltage as well, as described as an example:
the display device firstly utilizes a camera to collect images of a user, then utilizes software to set a monitoring range, when a detection module recognizes that other people enter the monitoring range (for example, the people in the monitoring range are judged, and the comparison can be carried out by combining the images of the user to determine whether the other people exist), a control instruction for switching to a peep-proof display mode is sent to a control module, the control module increases the voltage applied to the electrochromic material film 1 according to the control instruction, the transmittance of the electrochromic material film 1 is reduced to be in a non-transparent state, the emergent light of the pixel unit 3 cannot pass through the electrochromic material film 1, at the moment, the field angle of the emergent light of the pixel unit 3 is influenced by the electrochromic material film 1 to be reduced, only the eyes of people right facing the display screen (namely, the users can see the display content clearly, and the others cannot see the screen clearly, so that the peep-proof purpose is achieved.
When the detection module recognizes that no other person exists in the monitoring range, a control instruction for switching to the normal display mode is sent to the control module, and the control module stops applying voltage so that the display device is switched to the normal display mode.
In some embodiments, the detection module is further configured to determine a distance and an angle between the other person and the peep-proof display panel after detecting that the other person enters the preset detection range;
the memory is also used for storing a second corresponding relation between the distance, the angle and the voltage, and the second corresponding relation can be obtained by performing experiments in advance;
the control module is used for changing the applied voltage according to the control instruction and the second corresponding relation so as to change the light transmittance.
It should be noted that, the detection module may monitor the distance and angle between other personnel and the display device in real time and generate a control instruction to be continuously sent to the control module, and the control module continuously changes the voltage based on the second correspondence pre-stored in the memory. When the distance between other persons who enter the preset detection range and the display device is long and the angle is large, the applied voltage is controlled (the voltage is increased by a small margin), so that the light transmittance of the electrochromic material film 1 is reduced by a small margin and the transparency is reduced by a small margin; when the distance between the other person and the display device is small and the angle is small, the applied voltage is controlled (the voltage is greatly increased) so that the light transmittance of the electrochromic material film 1 is greatly reduced and the transparency is greatly reduced. If the distance is very close and the angle is very small, the highest peep-proof grade described in the previous embodiment is started to reduce the visual angle range to the greatest extent.
According to the embodiment, the control module changes the voltage applied to the electrochromic material film 1 based on the control instruction sent by the detection module, so that automatic switching between the peep-proof mode and the non-peep-proof mode of the peep-proof display device and automatic switching of different peep-proof grades in the peep-proof mode are realized, and the requirements of users on peep-proof in different environments are met.
Another embodiment of the present application provides a peep-proof display method based on the peep-proof display device provided in the foregoing embodiment, where the peep-proof display method includes:
the detection module detects whether other people enter a preset detection range of the peep-proof display panel;
if not, a first control instruction is sent to the control module to adjust the voltage so that the electrochromic material film is in a transparent state;
and if so, sending a second control instruction to the control module to adjust the voltage so as to reduce the light transmittance of the electrochromic material film.
It should be noted that, the first control instruction is an instruction to switch the normal display mode, and the second control instruction is an instruction to switch the peep-proof display mode.
In some embodiments of the present invention, in some embodiments,
the detection module can also detect the distance and the angle between other people and the peep-proof display panel after entering a preset detection range;
the control module changes the applied voltage according to the second control instruction and the second corresponding relation so as to change the light transmittance.
In the peep-proof display method provided by the embodiment, the control module can generate the control instruction based on the detection result to control the voltage applied to the electrochromic material film, so that automatic switching between the peep-proof mode and the non-peep-proof mode is realized, and the peep-proof requirements of users in different environments are met. And the distance and the angle between other people and the display device in the preset detection range can be further detected, so that the voltage applied to the electrochromic material film is controlled based on the detection result of the distance and the angle between the other people and the display device, the automatic switching of different peep-proof grades in the peep-proof mode is realized, and the actual peep-proof requirement is more met.
It should be noted that, the principles and the workflow of the peep-proof display method provided in the present embodiment are similar to those of the peep-proof display device provided in the second embodiment, and the related parts may be referred to the above description, which is not repeated herein.
Another embodiment of the present application provides a method for manufacturing a peep-proof display panel according to the foregoing embodiment, as shown in fig. 7, where the method for manufacturing a peep-proof display panel includes:
s10, forming a display module on a substrate, wherein the display module comprises pixel units arranged in an array;
s20, forming an electrochromic material film on the light emitting side of the display module;
s30, patterning the electrochromic material film to form first openings which are arranged in an array mode, wherein orthographic projection of the first openings on the substrate covers orthographic projection of the pixel units on the substrate.
It should be noted that, since the types of the display modules are different, the electrochromic material films are formed on the light emitting sides of the different display modules, and thus, in some embodiments, when the display modules are OLED display modules, the electrochromic material films are formed on the encapsulation layers of the OLED display modules; when the display module is an LCD display module, the electrochromic material film is formed on the cover plate of the LCE display module.
The preparation method of the peep-proof display panel provided by the embodiment has the advantages of simple process, low cost, easiness in implementation and the like.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
It should also be noted that in the description of the present application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
It should be apparent that the foregoing examples of the present application are merely illustrative of the present application and not limiting of the embodiments of the present application, and that various other changes and modifications may be made by one of ordinary skill in the art based on the foregoing description, and it is not intended to be exhaustive of all embodiments, and all obvious changes and modifications that come within the scope of the present application are intended to be embraced by the technical solution of the present application.
Claims (5)
1. A peep-proof display device is characterized by comprising
The anti-peeping display panel comprises a display module, wherein the display module comprises a substrate and pixel units arranged on the substrate in an array manner;
the peep-proof display panel further includes:
the electrochromic material film is arranged on the light emitting side of the display module, wherein the electrochromic material film is provided with first openings which are arranged in an array, the orthographic projection of the first openings on the substrate covers the orthographic projection of the pixel units on the substrate, and the electrochromic material film changes the light transmittance in response to the applied voltage so as to change the emergence angle of the light emitted by the pixel units;
a light-transmitting conductive film disposed between the display module and the electrochromic material film for applying the voltage to the electrochromic material film;
the conductive film is provided with second openings which are arranged in an array manner, and the orthographic projection of the second openings on the substrate corresponds to the orthographic projection of the first openings on the substrate;
the conductive film is made of graphene;
a memory for storing a first correspondence of an applied voltage and light transmittance of the electrochromic material film;
the detection module is used for sending a control instruction when detecting that other personnel except the user using the peep-proof display device enter a preset detection range of the peep-proof display panel;
and the control module is used for changing the applied voltage according to the control instruction and the first corresponding relation so as to change the light transmittance of the electrochromic material film.
2. The privacy display apparatus of claim 1, wherein,
the detection module is also used for determining the distance and the angle between the other personnel and the peep-proof display panel after detecting that the other personnel enter the preset detection range;
the memory is also used for storing a second corresponding relation between the distance and the angle and the voltage;
the control module is used for changing the applied voltage according to the control instruction and the second corresponding relation so as to change the light transmittance.
3. The privacy display apparatus of claim 1, wherein,
the display module is an OLED display module, wherein the electrochromic material film is formed on the packaging layer of the OLED display module; or alternatively
The display module is an LCD display module, wherein the electrochromic material film is formed on a cover plate of the LCD display module.
4. A peep-proof display method based on the peep-proof display device according to claim 1, comprising:
the detection module detects whether other people enter a preset detection range of the peep-proof display panel;
if not, a first control instruction is sent to the control module to adjust the voltage so that the electrochromic material film is in a transparent state;
and if so, sending a second control instruction to the control module to adjust the voltage so as to reduce the light transmittance of the electrochromic material film.
5. The peep-proof display method according to claim 4, wherein,
the detection module detects the distance and the angle between the other personnel and the peep-proof display panel after entering the preset detection range;
the control module changes the applied voltage according to the second control instruction and the second corresponding relation so as to change the light transmittance.
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| CN114793268B (en) * | 2022-03-03 | 2023-11-14 | 海信集团控股股份有限公司 | Camera control method and device and vehicle |
| CN115097679A (en) * | 2022-05-19 | 2022-09-23 | 西安中诺通讯有限公司 | Peep-proof method of folding screen terminal and peep-proof folding screen terminal |
| CN115616820B (en) * | 2022-06-14 | 2023-10-20 | 荣耀终端有限公司 | Peep-proof display screen, electronic equipment and peep-proof method |
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