CN116540466B - Peep-proof structure, control circuit and display device - Google Patents

Peep-proof structure, control circuit and display device Download PDF

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Publication number
CN116540466B
CN116540466B CN202310353235.8A CN202310353235A CN116540466B CN 116540466 B CN116540466 B CN 116540466B CN 202310353235 A CN202310353235 A CN 202310353235A CN 116540466 B CN116540466 B CN 116540466B
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China
Prior art keywords
driving
display
cavity
transparent
peep
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Active
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CN202310353235.8A
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Chinese (zh)
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CN116540466A (en
Inventor
罗俊豪
康报虹
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HKC Co Ltd
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HKC Co Ltd
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Priority to CN202310353235.8A priority Critical patent/CN116540466B/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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/1673—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by magnetophoresis
    • 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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1685—Operation of cells; Circuit arrangements affecting the entire cell
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application provides a peep-proof structure, a control circuit and a display device. The peep-proof structure is used for being attached to a display screen, and the display screen comprises a driving layer, a transparent structure, fluid and a first driving piece. The driving layer is provided with a display area corresponding to the pixel area of the display screen and a non-display area corresponding to the non-pixel area of the display screen; the driving layer is provided with a first cavity positioned in the non-display area; the transparent structures are arranged on one side of the driving layer along the thickness direction of the driving layer and are positioned in the non-display area, and the transparent structures are provided with second cavities communicated with the first cavities; the fluid is at least partially arranged in the first cavity; the plurality of first driving pieces are arranged corresponding to the first cavities. Driving fluid to move between the first cavity and the second cavity through the first driving piece so as to realize peep-proof display of the display device; and arranging the first cavity in the non-display area of the driving layer to contain fluid, so that the transparent structure can not shield light emitted from the display screen when the display screen is not peeped, and further the display brightness is improved.

Description

Peep-proof structure, control circuit and display device
Technical Field
The present application relates to the field of display technologies, and in particular, to a peep-proof structure, a control circuit, and a display device.
Background
At present, people pay more and more attention to privacy, especially in public places, content on a mobile phone is easy to peep, so people pay more attention to protection of the mobile phone privacy, so that the peep-proof film begins to be popular, the built-in peep-proof device also begins to be at the corner of the head, the peep-proof film on the market at present has a common disadvantage, namely, when the peep-proof film is attached, the brightness of the mobile phone is reduced, and the definition is reduced, so that the problem of brightness reduction is more important.
Secondly, with the increasing application of vehicle-mounted screens, the entertainment application on the vehicle-mounted screens is also increasing, and when a co-driver uses an entertainment mode, the eyes of the driver are easily attracted by the vehicle-mounted screens, so that the driver is not focused, and the driving safety problem of the driver is caused.
Disclosure of Invention
The application mainly solves the technical problems of low peep-proof display brightness and inattention of a driver in the prior art by providing a peep-proof structure, a control circuit and a display device.
In order to solve the technical problems, the first technical scheme provided by the application is as follows: the peep-proof structure is provided, wherein the peep-proof structure is used for being attached to a display screen, and the display screen is provided with a pixel area and a non-pixel area; the peep-proof structure comprises:
A driving layer having a display region corresponding to the pixel region and a non-display region corresponding to the non-pixel region; the driving layer is provided with a first cavity positioned in the non-display area;
The transparent structures are arranged on one side of the driving layer in the thickness direction of the driving layer and are positioned in the non-display area, and the transparent structures are provided with second cavities communicated with the first cavities;
a fluid disposed at least partially within the first cavity;
The first driving pieces are arranged corresponding to the first cavities; the first driving piece is used for driving the fluid from the first cavity to enter the second cavity; or forcing the fluid from the second cavity into the first cavity.
Wherein the volume of the first cavity is greater than or equal to the volume of the second cavity; the volume of the fluid is greater than or equal to the volume of the second cavity and less than or equal to the volume of the first cavity.
The transparent structure extends along the column direction of the display area and is positioned between at least two adjacent columns of the display area.
The first driving piece is positioned in the driving layer and positioned at one side of the first cavity away from the transparent structure; the first driving piece extends along the column direction of the display area and is arranged corresponding to the transparent structure.
One end of the transparent structure, which is communicated with the driving layer, is flexibly connected with the driving layer;
The peep-proof structure further comprises a plurality of driving piece groups, wherein the driving piece groups are positioned on one side, close to the transparent structure, of the driving layer; in the column direction of the display area, two adjacent driving pieces are respectively positioned at two opposite sides of the display area; in the row direction of the display area, two adjacent driving pieces are respectively positioned at two opposite sides of the transparent structure and are used for controlling the deflection of the transparent structure;
The driving piece groups comprise second driving pieces and third driving pieces with opposite polarities, and the arrangement modes of the second driving pieces and the third driving pieces in each driving piece group are the same.
Wherein the fluid is magnetic fluid; the first driving piece, the second driving piece and the third driving piece are all magnetic bodies.
The sealing frame comprises a first transparent substrate, a second transparent substrate and a supporting layer, wherein the first transparent substrate and the second transparent substrate are oppositely arranged, and the supporting layer is arranged between the first transparent substrate and the second transparent substrate;
The first transparent substrate is arranged on one side of the driving layer, which is close to the transparent structure, and the second transparent substrate is arranged on one side of the driving layer, which is far away from the transparent structure; the support layer is located in the non-display area and located at an edge of the peep-proof structure, and is used for supporting the first transparent substrate so that a gap is formed between the first transparent substrate and the second transparent substrate in a thickness direction of the driving layer.
The driving layer comprises a transparent carrier and a circuit layer; the circuit layer is arranged in the transparent bearing body and positioned in the non-display area and is used for driving the first driving piece to work.
In order to solve the technical problems, a second technical scheme provided by the application is as follows: providing a control circuit for realizing peep-proof display of a display device, wherein the display device is applied to a vehicle-mounted display; the display device comprises a display screen and the peep-proof structure;
the control circuit comprises a display control module, wherein the display control module is used for receiving an image signal and controlling the display screen to display an image according to the image signal; wherein, control circuit still includes peep-proof module, peep-proof module is used for:
Receiving an anti-peeping signal, and confirming the running condition of the vehicle and the display mode of the display screen; the running condition includes a running state and a parking state; the display modes include an entertainment mode and a navigation mode;
Controlling fluid flow from the first cavity into the second cavity and controlling deflection of the transparent structure in a direction approaching the primary driver's seat in response to the vehicle being in the driving state and the display screen being in the navigation mode;
Controlling the flow of the fluid from the first cavity into the second cavity and controlling the deflection of the transparent structure in a direction away from the primary driver seat in response to the vehicle being in the driving state and the display screen being in the entertainment mode; or controlling only the flow of the fluid from the first cavity into the second cavity;
Controlling the flow of the fluid from the second cavity into the first cavity in response to the vehicle being in the parked state.
In order to solve the technical problems, a third technical scheme provided by the application is as follows: provided is a display device including:
a display screen;
the peep-proof structure is the peep-proof structure and is arranged on the light emitting side of the display screen;
The control circuit is used for controlling the display device to perform peep-proof display, and the control circuit is the control circuit.
The application has the beneficial effects that: compared with the prior art, the application provides a peep-proof structure, a control circuit and a display device, wherein the peep-proof structure is used for being attached to a display screen, the display screen is provided with a pixel area and a non-pixel area, and the display screen comprises a driving layer, a transparent structure, fluid and a first driving piece. The driving layer is provided with a display area corresponding to the pixel area and a non-display area corresponding to the non-pixel area; the driving layer is provided with a first cavity positioned in the non-display area; the transparent structures are arranged on one side of the driving layer along the thickness direction of the driving layer and are positioned in the non-display area, and the transparent structures are provided with second cavities communicated with the first cavities; the fluid is at least partially arranged in the first cavity; the plurality of first driving pieces are arranged corresponding to the first cavity; the first driving piece is used for driving fluid from the first cavity to enter the second cavity; or forcing fluid from the second chamber into the first chamber. Driving fluid to move between the first cavity and the second cavity through the first driving piece so as to realize peep-proof display of the display device; and arranging the first cavity in the non-display area of the driving layer to contain fluid, so that the transparent structure can not shield light emitted from the display screen when the display screen is not peeped, and further the display brightness is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without any inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a first embodiment of a display screen according to the present application;
FIG. 2 is a schematic cross-sectional view of the structure at A-A in FIG. 1;
FIG. 3 is a schematic structural diagram of a second embodiment of a display screen according to the present application;
FIG. 4 is a schematic cross-sectional view of the structure at B-B in FIG. 3;
FIG. 5 is a schematic diagram of a control circuit provided by the present application;
Fig. 6 is a schematic structural diagram of an embodiment of a display device provided by the present application.
Reference numerals illustrate:
The anti-peeping structure comprises the following components of a peeping structure 100, a driving layer 10, a first cavity 11, a transparent carrier 12, a circuit layer 13, a transparent structure 20, a second cavity 21, a fluid 30, a first driving piece 40, a driving piece group 50, a second driving piece 51, a third driving piece 52, a sealing frame 60, a first transparent substrate 61, a second transparent substrate 62, a supporting layer 63, a display area 101, a non-display area 102, a control circuit 200, a display control module 201, an anti-peeping module 202, a display screen 300, a color film substrate 301, a substrate 3010, a color resistance layer 3011, a shading layer 3012, an array substrate 302, a liquid crystal layer 303, a pixel area 304, a non-pixel area 305 and a display device 400.
Detailed Description
The following describes embodiments of the present application in detail with reference to the drawings.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present application.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms "first," "second," "third," and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a first embodiment of a display screen according to the present application, and fig. 2 is a schematic sectional structural diagram of a portion A-A in fig. 1.
The present application provides a privacy architecture 100. The privacy structure 100 is adapted to be attached to a display screen (not shown in fig. 1 and 2). The display screen has a pixel area (not shown in fig. 1 and 2) and a non-pixel area (not shown in fig. 1 and 2). The privacy structure 100 includes an actuation layer 10, a transparent structure 20, a fluid 30, and a first actuation member 40.
The driving layer 10 has a display region 101 corresponding to a pixel region and a non-display region 102 corresponding to a non-pixel region. That is, the display areas 101 are disposed in one-to-one correspondence with the pixel areas, so that after the peep-proof structure 100 is attached to the display screen, the display areas 101 and the pixel areas are disposed in a complete overlapping manner, and the non-display areas 102 and the non-pixel areas are disposed in a complete overlapping manner in a direction perpendicular to the peep-proof structure 100. The display area 101 is a plurality of, and a plurality of display areas 101 are arranged in an array.
It should be noted that, in the direction perpendicular to the peep-proof structure 100, the orthographic projection area of the display area 101 on the display screen may be slightly larger than the area of the pixel area, so that as much light emitted from the pixel area of the display screen passes through the display area 101 of the peep-proof structure 100 as possible, so as to ensure that the peep-proof structure 100 does not affect the normal use of the display screen by a user after being attached to the display screen.
Further, the driving layer 10 includes a transparent carrier 12 and a wiring layer 13. The circuit layer 13 is disposed in the transparent carrier 12 and located in the non-display area 102 for driving the first driving element 40 to operate. The circuit layer 13 is disposed in the non-display area 102 to avoid shielding the light emitted from the display screen to the peep-proof structure 100 after the peep-proof structure 100 is attached to the display screen, so that the aperture ratio of the display device is not affected.
The driving layer 10 has a first cavity 11 located in the non-display area 102, i.e. the first cavity 11 is disposed in the driving layer 10 and located in the non-display area 102. The shape and size of the first cavity 11 are not limited herein, and are selected according to actual needs. The first cavity 11 communicates with one side surface of the driving layer 10 in the thickness direction of the driving layer 10.
The transparent structures 20 are plural, and the plural transparent structures 20 are disposed on one side of the driving layer 10 along the thickness direction of the driving layer 10 and are located in the non-display area 102.
The transparent structure 20 has a second cavity 21 in communication with the first cavity 11. That is, the transparent structure 20 has a second cavity 21, the second cavity 21 communicates with a surface of the transparent structure 20 near the driving layer 10, and a side of the second cavity 21 near the driving layer 10 communicates with the first cavity 11. The volume of the first cavity 11 is greater than or equal to the volume of the second cavity 21.
The transparent structure 20 extends along the column direction of the display areas 101, and is located between at least two adjacent columns of the display areas 101. That is, the transparent structures 20 are disposed to extend along the column direction of the display regions 101, one transparent structure 20 is disposed between two adjacent columns of the display regions 101, or one transparent structure 20 is not disposed between all adjacent columns of the display regions 101.
The transparent structures 20 extend along the column direction of the display areas 101, and when one transparent structure 20 is disposed between two adjacent columns of the display areas 101, that is, one transparent structure 20 is disposed between some adjacent columns of the display areas 101, and one transparent structure 20 is not disposed between some adjacent columns of the display areas 101. It is understood that the extending direction of the transparent structure 20 is parallel to the column direction of the display area 101, and the transparent structures 20 are not equidistantly spaced in the row direction of the display area 101.
When one transparent structure 20 is disposed between two adjacent columns of display areas 101, it can be understood that the extending direction of the transparent structure 20 is parallel to the column direction of the display areas 101, and the transparent structures 20 are disposed at equal intervals in the row direction of the display areas 101.
In this embodiment, a transparent structure 20 is disposed between two adjacent columns of display areas 101.
At least one end of the transparent structure 20 exceeds the display area 101 of the edge of the peep-proof structure 100 in the column direction of the display area 101; or both ends of the transparent structure 20 do not exceed the display area 101 at the edge of the peep-proof structure 100. In the present embodiment, the transparent structure 20 extends beyond the display area 101 at the edge of the peep-proof structure 100 in the column direction of the display area 101. The length of the transparent structure 20 is not limited herein, and is selected according to practical requirements.
It should be noted that the row direction or the column direction of the display area 101 of the present application is not particularly limited to a fixed direction. The row direction of the display area 101 may be a horizontal direction, a direction perpendicular to the horizontal direction, or other directions, which is not limited herein.
In this embodiment, the row direction of the display area 101 is a direction parallel to one side of the peep-proof structure 100.
The width direction of the transparent structure 20 is parallel to the row direction of the display regions 101, and the width of the transparent structure 20 is smaller than the interval between two adjacent columns of the display regions 101. The height direction of the transparent structure 20 is parallel to the thickness direction of the driving layer 10. The length direction of the transparent structure 20 is parallel to the column direction of the display area 101. The specific dimensions of the length, width and thickness of the transparent structure 20 are not limited herein, and are selected according to practical requirements. In this embodiment, the transparent structure 20 is a rectangular structure. In other embodiments, the transparent structure 20 may be a trapezoid structure, which is not limited herein, and only needs to ensure that the front projection of the transparent structure 20 on the driving layer 10 is located in the driving layer 10 and between two adjacent columns of display areas 101 corresponding to the front projection.
Further, the transparent structure 20 is disposed perpendicular to the driving layer 10. One end of the transparent structure 20, which is close to the driving layer 10, is fixedly connected with the driving layer 10, and the transparent structure 20 is not movable or swinging. It should be understood that when the end of the transparent structure 20 near the driving layer 10 is fixedly connected to the driving layer 10, the transparent structure 20 may be disposed non-perpendicularly to the driving layer 10, i.e. the included angle between the transparent structure 20 and the driving layer 10 may be smaller than 90 degrees.
In other embodiments, the end of the transparent structure 20 near the driving layer 10 may be flexibly connected to the driving layer 10, i.e. the end of the transparent structure 20 near the driving layer 10 is connected to the driving layer 10, and the end of the transparent structure 20 far from the driving layer 10 may swing left and right in a direction parallel to the driving layer 10.
The fluid 30 is at least partially disposed within the first chamber 11. The fluid 30 is movable between the first chamber 11 and the second chamber 21. The volume of the fluid 30 is greater than or equal to the volume of the second cavity 21 and less than or equal to the volume of the first cavity 11, so as to ensure that the fluid 30 can be disposed entirely in the first cavity 11, or the fluid 30 can also fill the second cavity 21. When the fluid 30 is disposed in the first cavity 11, the transparent structure 20 is transparent, and the transparent structure 20 does not play a role in peep prevention, and does not affect the display brightness of the display screen 300. The fluid 30 enters the second cavity 21, so that the transparent structure 20 can play a role in shading light to a certain extent, and further play a role in peep prevention. The elevation of the fluid 30 within the second chamber 21 determines the size of the viewing angle for privacy. The higher the rise of the fluid 30 in the second cavity 21, the smaller the viewing angle of the peep-proof, i.e. the smaller the viewing angle. According to the application, the first cavity 11 is arranged in the driving layer 10, and the fluid 30 is completely positioned in the first cavity 11 during non-peeping display, so that light emitted from the display screen 300 is not blocked, and compared with the prior art, the problem of dark peeping display brightness can be improved.
In this embodiment, the fluid 30 is a magnetic fluid, which is black and magnetic. In other embodiments, the fluid 30 may be other fluids 30 with magnetic or electrical properties.
The first driving member 40 is located in the driving layer 10, and is located at a side of the first cavity 11 away from the transparent structure 20. The first driving members 40 are plural, and the plural first driving members 40 are disposed corresponding to the first cavity 11. It is understood that the first driving member 40 is disposed opposite to the first cavity 11 in the thickness direction of the driving layer 10. The opposite arrangement is that there is an overlap in a certain direction. The first driving member 40 is configured to drive the fluid 30 from the first chamber 11 into the second chamber 21; or to drive the fluid 30 from the second chamber 21 into the first chamber 11.
The shape and size of the first driving member 40 are not limited herein, and it is only necessary to ensure that the first driving member 40 can drive the fluid 30 to flow between the first cavity 11 and the second cavity 21, thereby changing the distribution of the fluid 30 in the first cavity 11 and the second cavity 21.
In the present embodiment, the first driving member 40 is a magnetic body. Specifically, the first driving member 40 is an electromagnet. The first driving member 40 is disposed corresponding to the first cavity 11, and the first driving member 40 has a strip-like structure. The first driving member 40 extends along a column direction of the display area 101 and is disposed corresponding to the transparent structure 20. That is, the first driving member 40 is located between two adjacent columns of the display areas 101. The plurality of first driving members 40 are respectively connected to a bus (not shown) which controls the on/off of the bus through the wiring layer 13. Further, the circuit layer 13 located in the display area 102 is disposed on a side of the first driving member 40 away from the transparent structure 20, and is disposed at least partially overlapping the first driving member 40 in a direction perpendicular to the driving layer 10. That is, the circuit layer 13 is disposed directly under the first driving member 40 and along the extending direction of the first driving member 40, such that the circuit layer 13 and the first driving member 40 overlap in a direction perpendicular to the driving layer 10, thereby not affecting the aperture ratio of the display device.
After the first driving member 40 is electrified, the first driving member 40 can generate repulsive force on the fluid 30, so that the fluid 30 in the first cavity 11 enters the second cavity 21, and the peep-proof function is achieved. The repulsive force of the first driving member 40 to the fluid 30 can be controlled by controlling the current, so as to determine the rising height of the fluid 30 in the second cavity 21, and further change the size of the peep-proof viewing angle.
In other embodiments, a plurality of first driving members 40 may be disposed corresponding to one first cavity 11, and the plurality of first driving members 40 are disposed at intervals in the extending direction of the transparent structure 20.
The first driving member 40 and the fluid 30 have a corresponding relationship. When the fluid 30 is a charged fluid, the first driving member 40 drives the fluid 30 to move by virtue of the principle that like charges repel each other and opposite charges attract each other. When the fluid 30 is a magnetic fluid, the first driving member 40 drives the fluid 30 to move according to the principle that the magnetic materials repel each other in the same polarity and attract each other in the opposite polarity.
The privacy structure 100 also includes a sealing frame 60. The sealing frame 60 includes a first transparent substrate 61 and a second transparent substrate 62 disposed opposite to each other, and a support layer 63 disposed between the first transparent substrate 61 and the second transparent substrate 62.
The first transparent substrate 61 is disposed on a side of the driving layer 10 close to the transparent structure 20, and the second transparent substrate 62 is disposed on a side of the driving layer 10 far from the transparent structure 20. The supporting layer 63 is located at the non-display area 102 and at the edge of the peep-proof structure 100, and is used for supporting the first transparent substrate 61 so that the first transparent substrate 61 and the second transparent substrate 62 have a gap in the thickness direction of the driving layer 10, and sealing the gap between the first transparent substrate 61 and the second transparent substrate 62.
A gap may be between an end of the transparent structure 20 away from the driving layer 10 and the first transparent substrate 61, or an end of the transparent structure 20 away from the driving layer 10 abuts against the first transparent substrate 61. In the present embodiment, the support layer 63 is further used to support the first transparent substrate 61 such that the first transparent substrate 61 and the transparent structure 20 have a gap in the thickness direction of the driving layer 10, that is, the end of the transparent structure 20 away from the driving layer 10 has a gap with the first transparent substrate 61.
Referring to fig. 1, 3 and 4, fig. 3 is a schematic structural diagram of a second embodiment of a display screen according to the present application, and fig. 4 is a schematic sectional structural diagram of a portion B-B in fig. 3.
The second embodiment of the peep-proof structure 100 provided by the present application is substantially the same as the structure of the first embodiment of the peep-proof structure 100 provided by the present application, and is different in that: the privacy structure 100 also includes a plurality of driver sets 50.
In this embodiment, the privacy structure 100 further includes a plurality of driving member sets 50. The driver set 50 is located in the non-display area 102. The set of drivers 50 is located on the side of the driving layer 10 that is adjacent to the transparent structure 20. In the column direction of the display area 101, two adjacent driving element groups 50 are located on opposite sides of the display area 101, respectively. It is understood that the driver groups 50 are alternately arranged with the display areas 101 in the column direction of the display areas 101. In the row direction of the display area 101, two adjacent driving element groups 50 are respectively located at opposite sides of the transparent structure 20 and are used for controlling the deflection of the transparent structure 20. One end of the transparent structure 20, which is in communication with the driving layer 10, is flexibly connected with the driving layer 10. That is, an end of the transparent structure 20 close to the driving layer 10 is fixed to the driving layer 10 by a flexible adhesive, and an end of the transparent structure 20 far from the driving layer 10 may be deflected left and right in a row direction of the display area 101 by the driving of the driving set 50.
Further, the driving element groups 50 include second driving elements 51 and third driving elements 52 with opposite polarities, and the second driving elements 51 and third driving elements 52 in each driving element group 50 are arranged in the same manner. The second driving members 51 and the third driving members 52 are alternately arranged in the row direction of the display area 101. The shapes and sizes of the second driving member 51 and the third driving member 52 are not limited herein, and it is only necessary to ensure that the second driving member 51 and the third driving member 52 cooperate to drive the transparent structure 20 to deflect in the row direction of the display area 101.
In the present embodiment, the second driver 51 and the third driver 52 are both magnetic bodies. The fluid 30 is a magnetic fluid. When the second driver 51 and the third driver 52 are energized, a magnetic field is generated between the second driver 51 and the third driver 52. The magnetic field generated between the second driving member 51 and the third driving member 52 adjacent to the transparent structure 20 and located at two opposite sides of the transparent structure 20 along the row direction of the display area 101 can drive the fluid 30 in the second cavity 21 to drive the transparent structure 20 to deflect left and right in the row direction of the display area 101, so as to change the peep-proof direction. The second driving members 51 are connected to one bus, the third driving members 52 are connected to the other bus, and the on/off of the buses is controlled by the circuit layer 13. The magnitude of the magnetic field generated between the second driving member 51 and the third driving member 52 can be controlled by controlling the magnitude of the current, thereby changing the magnitude of the angle of the left-right deflection of the transparent structure 20 in the row direction of the display area 101; and changing the direction of the current may change the direction in which the transparent structure 20 is deflected in the row direction of the display area 101, i.e., whether the transparent structure 20 is deflected to the left or to the right in the row direction of the display area 101.
It should be appreciated that the fluid 30 also has correspondence with the second driver 51 and the third driver 52. When the fluid 30 is a charged fluid, an electric field is generated between the second driving member 51 and the third driving member 52 to drive the fluid 30 in the second cavity 21 to drive the transparent structure 20 to deflect left and right in the row direction of the display area 101. When the fluid 30 is a magnetic fluid, a magnetic field is generated between the second driving member 51 and the third driving member 52 to drive the fluid 30 in the second cavity 21 to drive the transparent structure 20 to deflect left and right in the row direction of the display area 101.
It should be noted that, when the peep-proof structure 100 includes the driving element set 50, it is necessary to ensure that a gap is formed between an end of the transparent structure 20 away from the driving layer 10 and the first transparent substrate 61 in the thickness direction of the driving layer 10, and an end of the transparent structure 20 close to the driving layer 10 is flexibly connected with the driving layer 10, so as to prevent friction between the transparent structure 20 and the first transparent substrate 61 when swinging, and affect the display effect of the peep-proof structure 100.
The present application provides a privacy architecture 100. The peep-proof structure 100 is used for being attached to a display screen, the display screen is provided with a pixel area and a non-pixel area, wherein the peep-proof structure 100 comprises a driving layer 10, a transparent structure 20, a fluid 30 and a first driving piece 40. The driving layer 10 has a display region 101 corresponding to a pixel region and a non-display region 102 corresponding to a non-pixel region; the driving layer 10 has a first cavity 11 located in the non-display area 102; the transparent structures 20 are arranged on one side of the driving layer 10 along the thickness direction of the driving layer 10 and are positioned in the non-display area 102, and the transparent structures 20 are provided with second cavities 21 communicated with the first cavities 11; the fluid 30 is at least partially disposed within the first cavity 11; the plurality of first driving members 40 are disposed corresponding to the first cavity 11; the first driving member 40 is configured to drive the fluid 30 from the first chamber 11 into the second chamber 21; or to drive the fluid 30 from the second chamber 21 into the first chamber 11. Driving the fluid 30 to move between the first cavity 11 and the second cavity 21 through the first driving piece 40 so as to realize peep-proof display of the display device; and disposing the first cavity 11 in the non-display area 102 of the driving layer 10 to accommodate the fluid 30, so that the transparent structure 20 does not block the light emitted from the display screen when the display is not peeped, thereby improving the display brightness.
Referring to fig. 5, fig. 5 is a schematic block diagram of a control circuit according to the present application.
The present application provides a control circuit 200 for peep-proof display of a display device. The display device is applied to the vehicle-mounted display. The display device comprises a display screen and the peep-proof structure.
The control circuit 200 includes a display control module 201 and a privacy module 202.
The display control module 201 is configured to receive the image signal and control the display screen to display an image according to the image signal.
The peep-proof module 202 is configured to receive the peep-proof signal and confirm the driving status of the vehicle and the display mode of the display screen. The running condition includes a running state and a parking state. The display modes include an entertainment mode and a navigation mode. Controlling fluid to flow into the second cavity from the first cavity and controlling the transparent structure to deflect towards a direction approaching the main driver seat in response to the vehicle being in a driving state and the display screen being in a navigation mode; controlling the flow of fluid from the first cavity into the second cavity and the deflection of the transparent structure in a direction away from the primary driver's seat in response to the vehicle being in a driving state and the display screen being in an entertainment mode; in response to the vehicle being in a parked state, fluid is controlled to flow from the second chamber into the first chamber.
That is, when the vehicle is in a driving state, a peep-proof mode using a display screen is required in order for a driver of the main driver's seat to view navigation or prevent the driver from being distracted. When the vehicle is in a parking state, the peep-proof mode is not required to be started.
Further, when the vehicle is in a driving state and the display screen is in a navigation mode, a driver of a main driver seat of the vehicle is facilitated to view a display screen of the display screen, and the peep-proof module 202 controls fluid to enter the second cavity from the first cavity, specifically, can control the rising height of the fluid in the second cavity so as to select a proper peep-proof viewing angle according to the needs of the driver. Meanwhile, the peep-proof module 202 controls the transparent structure to deflect towards the direction close to the main driver seat so as to facilitate the display view angle to face the driver, so that the driver can see the display picture of the display screen without greatly deflecting the head, and the driving safety is facilitated.
When the vehicle is in a driving state and the display screen is in an entertainment mode, a driver of the main driver seat is prevented from being attracted by seeing the display screen of the display screen, so that the driver is further caused to be distracted and driving safety is affected, and the peep-proof module 202 controls fluid to enter the second cavity from the first cavity and selects a proper peep-proof visual angle according to requirements. Meanwhile, the peep-proof module 202 controls the transparent structure to deflect away from the main driver seat to prevent the driver from seeing the display screen.
And, the vehicle is in the state of traveling and the display screen is in the amusement mode, and the front passenger seat is unmanned, and when the rear seat is someone, peep-proof module 202 can only control fluid from first cavity entering second cavity and select suitable peep-proof visual angle as required, avoids the driver to see the display screen's display screen easily and just does not influence the people of rear seat to see the display screen's display screen.
Referring to fig. 1 and fig. 6, fig. 6 is a schematic structural diagram of a display device according to an embodiment of the application.
The application provides a display device 400, wherein the display device 400 comprises a display screen 300, a peep-proof structure 100 and a control circuit.
The peep-proof structure 100 is the peep-proof structure 100 described above. The control circuit is the control circuit. The peep-proof structure 100 is attached to one side of the light-emitting surface of the display screen 300. Specifically, a side of the second transparent substrate 62 of the peep-proof structure 100 away from the first transparent substrate 61 is attached to the light-emitting surface side of the display screen 300.
The display screen 300 has a pixel area 304 and a non-pixel area 305, and the non-pixel area 305 is disposed around the pixel area 304. That is, the non-pixel region 305 is disposed around the pixel region 304. The pixel areas 304 are plural, and the plural pixel areas 304 are arranged in an array. The non-pixel area 305 of the display 300 is a non-light transmissive area.
The pixel areas 304 of the display screen 300 are arranged in one-to-one correspondence with the display areas 101 of the peep-proof structure 100, so that after the peep-proof structure 100 is attached to the display screen 300, the display areas 101 and the pixel areas 304 are completely overlapped, and the non-display areas 101 and the non-pixel areas 305 are completely overlapped in the direction perpendicular to the display screen 300.
It should be noted that, in the direction perpendicular to the display screen 300, the front projection area of the display area 101 on the display screen 300 may be slightly larger than the pixel area 304, so that as much light emitted from the pixel area 304 of the display screen 300 passes through the display area 101 of the peep-proof structure 100 as possible, so as to ensure that the normal use of the display screen 300 by a user is not affected after the peep-proof structure 100 is attached to the display screen 300.
The display screen 300 may be a display panel such as a liquid crystal display panel, an LED (Light-Emitting Diode) display panel, or an OLED (Organic Light-Emitting Diode) display panel.
The following description will take the example in which the display 300 is a liquid crystal display panel.
The display screen 300 includes a color film substrate 301 and an array substrate 302 disposed opposite to each other, and a liquid crystal layer 303 disposed between the color film substrate 301 and the array substrate 302.
The color film substrate 301 includes a substrate 3010, a color resist layer 3011 and a light shielding layer 3012 provided on one side of the substrate 3010. The color resist layer 3011 includes a plurality of color resists of different colors, each disposed corresponding to one of the pixel regions 304. The light shielding layer 3012 is provided in the non-pixel region 305 and on the side surface of the color blocking layer 3011. That is, the light shielding layer 3012 is disposed corresponding to the non-pixel region 305, and the light shielding layer 3012 and the color blocking layer 3011 are located on the same horizontal plane and surround the color blocking layer 3011. It is understood that the thickness of the light shielding layer 3012 is equal to the thickness of the color resist layer 3011. It should be understood that the thickness of the light shielding layer 3012 may be slightly larger or slightly smaller than the thickness of the color blocking layer 3011, which is not limited herein, and is selected according to practical requirements. The light shielding layer 3012 may be a Black Matrix (BM) or other light shielding material.
The foregoing is only the embodiments of the present application, and therefore, the patent protection scope of the present application is not limited thereto, and all equivalent structures or equivalent flow changes made by the content of the present specification and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims (9)

1. The peep-proof structure is characterized by being used for being attached to a display screen, wherein the display screen is provided with a pixel area and a non-pixel area; the peep-proof structure comprises:
A driving layer having a display region corresponding to the pixel region and a non-display region corresponding to the non-pixel region; the driving layer is provided with a first cavity positioned in the non-display area;
The transparent structures are arranged on one side of the driving layer in the thickness direction of the driving layer and are positioned in the non-display area, and the transparent structures are provided with second cavities communicated with the first cavities;
a fluid disposed at least partially within the first cavity;
the first driving pieces are arranged corresponding to the first cavities; the first driving piece is used for driving the fluid from the first cavity to enter the second cavity; or forcing the fluid from the second cavity into the first cavity;
one end of the transparent structure, which is communicated with the driving layer, is flexibly connected with the driving layer;
The peep-proof structure further comprises a plurality of driving piece groups, wherein the driving piece groups are positioned on one side, close to the transparent structure, of the driving layer; in the column direction of the display area, two adjacent driving pieces are respectively positioned at two opposite sides of the display area; in the row direction of the display area, two adjacent driving pieces are respectively positioned at two opposite sides of the transparent structure and are used for controlling the deflection of the transparent structure;
The driving piece groups comprise second driving pieces and third driving pieces with opposite polarities, and the arrangement modes of the second driving pieces and the third driving pieces in each driving piece group are the same.
2. The privacy structure of claim 1, wherein the volume of the first cavity is greater than or equal to the volume of the second cavity; the volume of the fluid is greater than or equal to the volume of the second cavity and less than or equal to the volume of the first cavity.
3. The privacy structure of claim 1, wherein the transparent structures extend along the column direction of the display areas and are located between at least some adjacent columns of the display areas.
4. The privacy structure of claim 3, wherein the first driver is located within the driver layer and on a side of the first cavity remote from the transparent structure; the first driving piece extends along the column direction of the display area and is arranged corresponding to the transparent structure.
5. The privacy structure of claim 1, wherein the fluid is a magnetic fluid; the first driving piece, the second driving piece and the third driving piece are all magnetic bodies.
6. The privacy structure of claim 1, further comprising a sealing frame comprising a first transparent substrate and a second transparent substrate disposed opposite each other, and a support layer disposed between the first transparent substrate and the second transparent substrate;
The first transparent substrate is arranged on one side of the driving layer, which is close to the transparent structure, and the second transparent substrate is arranged on one side of the driving layer, which is far away from the transparent structure; the support layer is located in the non-display area and located at an edge of the peep-proof structure, and is used for supporting the first transparent substrate so that a gap is formed between the first transparent substrate and the second transparent substrate in a thickness direction of the driving layer.
7. The privacy structure of claim 1, wherein the driving layer comprises a transparent carrier and a circuit layer; the circuit layer is arranged in the transparent bearing body and positioned in the non-display area and is used for driving the first driving piece to work.
8. A control circuit for realizing peep-proof display of a display device, the display device being applied to a vehicle-mounted display; the display device comprising a display screen and the privacy structure of any one of claims 1 to 7;
The control circuit comprises a display control module, wherein the display control module is used for receiving an image signal and controlling the display screen to display an image according to the image signal; the control circuit is characterized by further comprising a peep-proof module, wherein the peep-proof module is used for:
Receiving an anti-peeping signal, and confirming the running condition of the vehicle and the display mode of the display screen; the running condition includes a running state and a parking state; the display modes include an entertainment mode and a navigation mode;
Controlling fluid flow from the first cavity into the second cavity and controlling deflection of the transparent structure in a direction approaching the primary driver's seat in response to the vehicle being in the driving state and the display screen being in the navigation mode;
Controlling the flow of the fluid from the first cavity into the second cavity and controlling the deflection of the transparent structure in a direction away from the primary driver seat in response to the vehicle being in the driving state and the display screen being in the entertainment mode; or controlling only the flow of the fluid from the first cavity into the second cavity;
Controlling the flow of the fluid from the second cavity into the first cavity in response to the vehicle being in the parked state.
9. A display device, comprising:
a display screen;
a peep-proof structure as defined in any one of claims 1 to 7, the peep-proof structure being disposed on a light-emitting side of the display screen;
a control circuit for controlling the display device to perform peep-proof display, wherein the control circuit is the control circuit of claim 8.
CN202310353235.8A 2023-03-30 2023-03-30 Peep-proof structure, control circuit and display device Active CN116540466B (en)

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CN112470066A (en) * 2018-08-10 2021-03-09 伊英克加利福尼亚有限责任公司 Drive waveform for switchable light collimating layer comprising a bistable electrophoretic fluid
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