CN114706244A - Display device - Google Patents
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- CN114706244A CN114706244A CN202210439765.XA CN202210439765A CN114706244A CN 114706244 A CN114706244 A CN 114706244A CN 202210439765 A CN202210439765 A CN 202210439765A CN 114706244 A CN114706244 A CN 114706244A
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 101
- 230000005540 biological transmission Effects 0.000 claims abstract description 70
- 229920000642 polymer Polymers 0.000 claims description 8
- 239000000758 substrate Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 208000008918 voyeurism Diseases 0.000 description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1323—Arrangements for providing a switchable viewing angle
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
-
- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
- G02F1/133723—Polyimide, polyamide-imide
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Geometry (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Polarising Elements (AREA)
Abstract
The application discloses display device, it includes: a first polarizer; the first polaroid and the second polaroid are oppositely arranged; the display panel is arranged between the first polaroid and the second polaroid; the liquid crystal dimming box is arranged on one side of the second polarizer far away from the display panel; the third polaroid is arranged on one side, far away from the second polaroid, of the liquid crystal dimming box; the transmission axis of the first polaroid is vertical to that of the second polaroid, and the transmission axis of the third polaroid is parallel to that of the second polaroid. This application adjusts display device's light through liquid crystal light modulation box and third polaroid, when display device is in the peep-proof state for display device is in normal brightness state at the light of display device's front view direction, and is in lower luminance state at the light of display device's front side direction, rear side direction, left side direction and right side direction, thereby realizes that display device is peep-proof in four directions.
Description
Technical Field
The application relates to the technical field of display, in particular to a display device.
Background
With the popularity and use of display devices, such as smartphones, laptops, tablets, etc., increasing use, users have become concerned with other individuals being able to read sensitive or private information. In public places, users pay more and more attention to personal information privacy, and the concept of peep-proof display devices is gradually concerned by users. The first peep-proof device is to stick a layer of peep-proof film on the outer surface of the display device, which can realize the invisible left and right blackening, but the peep-proof film can reduce the brightness of the display device and cannot switch between the peep-proof mode and the non-peep-proof mode. Therefore, the conventional switchable privacy display device usually adds a dimming box on the basis of the conventional display device to control the light in the left and right directions of the display device, thereby realizing the bidirectional switchable privacy protection. The existing switchable peep-proof display device can only realize the peep-proof in the left and right directions and can not simultaneously realize the peep-proof in the front direction, the rear direction, the left direction and the right direction.
Disclosure of Invention
The application provides a display device to realize the peep-proof in front side direction, rear side direction, left side direction and right side direction simultaneously.
The application provides a display device, it includes:
a first polarizer;
the first polaroid and the second polaroid are oppositely arranged;
the display panel is arranged between the first polaroid and the second polaroid;
the liquid crystal dimming box is arranged on one side, away from the display panel, of the second polarizer and comprises a dimming liquid crystal layer;
the third polaroid is arranged on one side, far away from the second polaroid, of the liquid crystal dimming box;
the transmission axis of the first polarizer is perpendicular to the transmission axis of the second polarizer, and the transmission axis of the third polarizer is parallel to the transmission axis of the second polarizer.
Optionally, in some embodiments of the present application, the display panel includes a first symmetry axis and a second symmetry axis that intersect perpendicularly, the first symmetry axis with the crossing point of second symmetry axis does the central point of display panel, the transmission axis of first polaroid with the contained angle of first symmetry axis is negative 45 degrees, the transmission axis of third polaroid or the transmission axis of second polaroid with the contained angle of first symmetry axis is positive 45 degrees.
Optionally, in some embodiments of the present application, the display panel includes a first symmetry axis and a second symmetry axis that intersect perpendicularly, the intersection point of the first symmetry axis and the second symmetry axis is the central point of the display panel, the transmission axis of the first polarizer and the included angle of the first symmetry axis are positive 45 degrees, the transmission axis of the third polarizer or the transmission axis of the second polarizer and the included angle of the first symmetry axis are negative 45 degrees.
Optionally, in some embodiments of the present application, the display panel includes a first symmetry axis and a second symmetry axis that intersect perpendicularly, the intersection point of the first symmetry axis and the second symmetry axis is the central point of the display panel, the transmission axis of the first polarizer and the included angle of the first symmetry axis are zero degrees, the transmission axis of the third polarizer or the transmission axis of the second polarizer and the included angle of the first symmetry axis are 90 degrees.
Optionally, in some embodiments of the present application, the display device further includes a backlight light source, and the backlight light source is a collimated light source.
Optionally, in some embodiments of the present application, the display device further includes a backlight source, where the backlight source is disposed on a side of the first polarizer far from the display panel.
Optionally, in some embodiments of the present application, the display device further includes a backlight source, and the backlight source is disposed on a side of the third polarizer, which is far away from the liquid crystal dimming cell.
Optionally, in some embodiments of the present application, the liquid crystal dimming cell includes:
a first electrode;
a second electrode disposed opposite the first electrode;
the dimming liquid crystal layer is disposed between the first electrode and the second electrode.
Optionally, in some embodiments of the present application, the dimming liquid crystal layer includes a polymer network and liquid crystal molecules distributed in the polymer network.
Optionally, in some embodiments of the present application, the liquid crystal molecules are negative liquid crystal molecules or positive liquid crystal molecules.
Optionally, in some embodiments of the present application, the liquid crystal dimming cell further includes:
the first alignment layer is arranged on one side of the first electrode close to the second electrode;
and the second alignment layer is arranged on one side of the second electrode close to the first electrode.
Optionally, in some embodiments of the present application, the first alignment layer and the second alignment layer comprise polyimide alignment films.
Optionally, in some embodiments of the present application, the liquid crystal dimming cell further includes:
the first substrate is arranged on one side of the first electrode, which is far away from the second electrode;
and the second substrate is arranged on one side of the second electrode, which is far away from the first electrode.
The application provides a display device, it includes: a first polarizer; the first polaroid and the second polaroid are oppositely arranged; a display panel disposed between the first polarizer and the second polarizer; the liquid crystal dimming box is arranged on one side, far away from the display panel, of the second polarizer; the third polaroid is arranged on one side, far away from the second polaroid, of the liquid crystal dimming box; the transmission axis of the first polarizer is perpendicular to the transmission axis of the second polarizer, and the transmission axis of the third polarizer is parallel to the transmission axis of the second polarizer. This application adjusts display device's light through liquid crystal light modulation box and third polaroid, when display device is in the peep-proof state, make display device be in normal brightness state at the light of display device's front view direction, and the light at display device's front side direction, rear side direction, left side direction and right side direction is in lower brightness state, thereby realizes display device simultaneously at the peep-proof of front side direction, rear side direction, left side direction and right side direction.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a first structure of a display device provided in the present application;
fig. 2 is a schematic view illustrating light propagation in a front view direction, a front side direction and a rear side direction of the display device when the display device provided by the present application is in a peep-proof state;
FIG. 3 is a schematic diagram of the intersection of liquid crystal molecules of a liquid crystal dimming cell with a light line in the front view direction of the display device when the display device is in the privacy protecting state;
FIG. 4 is a schematic diagram of the intersection of the liquid crystal molecules of the LC light box with the light line in the front or back direction of the display device when the display device provided by the present application is in a privacy state;
fig. 5 is a schematic view illustrating light propagation in the left and right directions of the display device when the display device is in the peep-proof state;
fig. 6 is a schematic diagram illustrating intersection between liquid crystal molecules of the liquid crystal dimming cell and a light line in a left direction or a right direction of the display device when the display device provided by the present application is in a privacy-protection state;
FIG. 7 is a schematic view of light propagating in a liquid crystal light box when the display device provided by the present application is in a sharing state;
fig. 8 is a schematic top view of a display panel of the display device provided in the present application;
FIG. 9 is a schematic top view illustrating a first structure of a first polarizer of a display device according to the present application;
FIG. 10 is a schematic top view of a first structure of a second polarizer of a display device provided herein;
FIG. 11 is a schematic top view of a second structure of a first polarizer of a display device provided in the present application;
FIG. 12 is a schematic top view of a second structure of a second polarizer of a display device provided in the present application;
FIG. 13 is a schematic top view of a third structure of a first polarizer of a display device provided in the present application;
FIG. 14 is a schematic top view of a third structure of a second polarizer of a display device provided in the present application;
fig. 15 is a schematic diagram of a second structure of the display device provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
With the popularity and use of display devices, such as smart phones, laptops, tablets, etc., increasing, users have become concerned with other individuals being able to read sensitive or private information. In public places, users pay more and more attention to personal information privacy, and the concept of peep-proof display devices is gradually concerned by users. Therefore, the conventional switchable privacy display device is usually provided with an additional light modulation box on the basis of the conventional display device to control the light beams of the display device in the opposite directions, so as to realize switchable privacy in the opposite directions. However, the conventional switchable privacy display device cannot simultaneously achieve privacy in the front direction, the rear direction, the left direction and the right direction.
The present application provides a display device 100, which is described in detail below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments of the present application.
Referring to fig. 1, fig. 1 is a schematic view illustrating a first structure of a display device 100 according to the present application. The present application provides a display device 100, which includes a first polarizer 10, a second polarizer 20, a display panel 30, a liquid crystal dimming cell 40, and a third polarizer 50.
The first polarizer 10 and the second polarizer 20 are oppositely arranged, and the display panel 30 is arranged between the first polarizer 10 and the second polarizer 20; the liquid crystal dimming box 40 is arranged on one side of the second polarizer 20 far away from the display panel 30, the liquid crystal dimming box 40 comprises a dimming liquid crystal layer 41, and the third polarizer 50 is arranged on one side of the liquid crystal dimming box 40 far away from the second polarizer 20;
the transmission axis 11 of the first polarizer 10 is perpendicular to the transmission axis 21 of the second polarizer 20, and the transmission axis of the third polarizer 50 is parallel to the transmission axis 21 of the second polarizer 20.
It should be noted that the liquid crystal light modulation cell 40 changes the direction of the light entering into the liquid crystal light modulation cell 40 by adjusting the alignment angle of the liquid crystal molecules 412. The first polarizer 10, the second polarizer 20 and the third polarizer 50 are made of polyvinyl alcohol films, the polyvinyl alcohol films have high temperature and humidity resistance, and the temperature and humidity resistance of the polyvinyl alcohol films can be realized by adjusting the formula, the stretching ratio and the stretching speed of a polyvinyl alcohol iodine solution.
This application is equipped with liquid crystal dimming box 40 and third polaroid 50, adjust display device 100's light through liquid crystal dimming box 40 and third polaroid 50, when display device 100 is in the peep-proof state, make display device 100 be in normal brightness state at the light of display device 100's front view direction, and the light at display device 100's front side direction, the rear side direction, the light of left side direction and right side direction is in lower brightness state, thereby realize display device 100 simultaneously in the front side direction, the rear side direction, the peep-proof of left side direction and right side direction.
In some embodiments, the display device 100 further comprises a backlight source 60, the backlight source 60 being a collimated light source. The collimated light source has better display effect, and is beneficial to reducing the loss of the light source in the transmission process.
In some embodiments, the backlight source 60 is disposed on a side of the third polarizer 50 away from the lc box 40. That is, in this embodiment, the side of the third polarizer 50 is the light incident side.
In some embodiments, the liquid crystal dimming cell 40 comprises:
a first electrode 42;
a second electrode 43, the second electrode 43 being disposed opposite to the first electrode 42;
the dimming liquid crystal layer 41 is disposed between the first electrode 42 and the second electrode 43.
The materials of the first electrode 42 and the second electrode 43 include indium tin oxide transparent conductive materials or aluminum-doped zinc oxide transparent conductive materials. The present application regulates and controls the dimming liquid crystal layer 41 by forming the electric field between the first electrode 42 and the second electrode 43 to change the direction of light.
Further, in some embodiments, the dimming liquid crystal layer 41 includes a polymer network 411 and liquid crystal molecules 412 distributed in the polymer network 411. The polymer is doped in the liquid crystal to generate a refractive index difference between the liquid crystal molecules 412 and the polymer, so that light is scattered, and the effect of the sharing mode is better.
Still further, the liquid crystal molecules 412 are negative liquid crystal molecules or positive liquid crystal molecules. The positive liquid crystal molecules and the negative liquid crystal molecules are different in that the initial alignment of the negative liquid crystal molecules is a vertical alignment, and when the negative liquid crystal molecules are in the vertical alignment, correspondingly, the display device 100 of the present application is in a privacy mode; when an electric field is formed between the first electrode 42 and the second electrode 43 after the power is turned on, so that the negative liquid crystal molecules are in a horizontal alignment, the display device 100 of the present application is in a sharing mode. Therefore, the power consumption of the display device 100 can be reduced by using negative liquid crystal molecules, and the display device 100 of the present application does not need to energize the first electrode 42 and the second electrode 43 when in the privacy mode. The initial alignment of the positive liquid crystal molecules is a horizontal alignment, and correspondingly, the display device 100 of the present application is in a sharing mode; when an electric field is formed between the first electrode 42 and the second electrode 43 after the electrification, so that the positive liquid crystal molecules are in the vertical alignment, and the positive liquid crystal molecules are in the vertical alignment, the display device 100 of the present application is in the privacy mode correspondingly.
In some embodiments, the liquid crystal dimming cell 40 further comprises:
a first alignment layer 44, wherein the first alignment layer 44 is disposed on a side of the first electrode 42 close to the second electrode 43;
a second alignment layer 45, wherein the second alignment layer 45 is disposed on a side of the second electrode 43 close to the first electrode 42.
The liquid crystal molecules 412 are prealigned by a first alignment layer 44 and a second alignment layer 45, wherein the first alignment layer 44 and the second alignment layer 45 include polyimide alignment films.
In some embodiments, the liquid crystal dimming cell 40 further comprises:
a first substrate 46, wherein the first substrate 46 is arranged on one side of the first electrode 42 far away from the second electrode 43;
and a second substrate 47, wherein the second substrate 47 is arranged on the side of the second electrode 43 far away from the first electrode 42.
The liquid crystal dimming cell 40 is supported by a first substrate 46 and a second substrate 47, wherein the first substrate 46 and the second substrate 47 may be made of glass, polyester resin, transparent polyimide, ultra-thin glass, or the like.
Referring to fig. 2 to 6, fig. 2 is a schematic view illustrating light propagation in a front view direction, a front side direction and a rear side direction of the display device 100 when the display device 100 is in the peep-proof state, figure 3 is a schematic diagram of the intersection of the liquid crystal molecules of the lc box 40 with the light line in the front view direction of the display device 100 when the display device 100 is in the privacy-preserving state, fig. 4 is a schematic diagram of the intersection of the liquid crystal molecules of the liquid crystal dimming cell 40 and the light ray lines in the front side direction or the back side direction of the display device 100 when the display device 100 provided by the present application is in the peep-proof state, fig. 5 is a schematic view of light propagation in the left and right directions of the display device 100 when the display device 100 provided by the present application is in the peep-proof state, fig. 6 is a schematic diagram illustrating intersection of liquid crystal molecules of the liquid crystal dimming cell 40 and a light line in a left or right direction of the display device 100 when the display device 100 provided by the present application is in a peep-proof state. Specifically, the side of the third polarizer 50 is a light incident side, the display panel 30 is in a display state, and the incident light enters the liquid crystal dimming cell 40 from the third polarizer 50. When the liquid crystal molecules 412 of the dimming liquid crystal layer 41 of the liquid crystal dimming cell 40 are aligned perpendicular to the third polarizer 50, referring to fig. 2 and 3, when a user views the display device 100 in a front view direction of the display device 100, due to the characteristics of the liquid crystal molecules 412, there is no component of the incident light in the long axis of the liquid crystal molecules 412 when viewed in the front view direction of the display device 100, the incident light viewed by a user in the front view direction of the display device 100 is linearly polarized light, and the transmission axis of the third polarizer 50 is parallel to the transmission axis 21 of the second polarizer 20, the second polarizer 20 does not absorb the linearly polarized light, the linearly polarized light directly enters the display panel 30 from the second polarizer 20 and then is emitted from the first polarizer 10, and finally, a user in the front view direction of the display device 100 can see the display device 100 with normal brightness; referring to fig. 2, 4 to 6, when a user views the display device 100 in any one of the front, rear, left and right directions (i.e., non-front-viewing directions) of the display device 100, the incident light has a component in the long axis of the liquid crystal molecules 412 when viewing the display device 100 in the non-front-viewing direction, the incident light is an elliptical or circular polarized light when viewing the display device 100 in the non-front-viewing direction, and the elliptical or circular polarized light enters the display panel 30 after being absorbed by the second polarizer 20 and then exits from the first polarizer 10 because the transmission axis of the third polarizer 50 is parallel to the transmission axis 21 of the second polarizer 20, so that the user in the non-front-viewing direction of the display device 100 can view the display device 100 with the absorbed brightness; therefore, the user in the non-front-view direction of the display device 100 and the user in the front-view direction of the display device 100 see different brightness, the display device 100 is in the peep-proof state, and peep-proof of the display device 100 in the front-side direction, the rear-side direction, the left-side direction, and the right-side direction can be achieved at the same time. Referring to fig. 7, fig. 7 is a schematic view illustrating the propagation of light in the liquid crystal dimming cell 40 when the display device 100 is in the sharing state, when the liquid crystal molecules 412 of the dimming liquid crystal layer 41 of the liquid crystal dimming cell 40 are arranged in parallel to the direction of the third polarizer 50, incident light scatters when passing through the liquid crystal dimming cell 40, the propagation angle of the incident light is increased, so that the luminance of the display device 100 in the front direction, the rear direction, the left direction, and the right direction of the display device 100 is increased, a user can see the display content of the display device in any one of the front direction, the rear direction, the left direction, and the right direction of the display device 100, and the display device 100 is in the sharing state, so that the display device 100 can be shared.
Referring to fig. 8 to 10, fig. 8 is a schematic top view of a display panel 30 of a display device 100 provided in the present application, fig. 9 is a schematic top view of a first structure of a first polarizer 10 of the display device 100 provided in the present application, and fig. 10 is a schematic top view of a first structure of a second polarizer 20 of the display device 100 provided in the present application. The display panel 30 comprises a first symmetry axis 31 and a second symmetry axis 32 which are vertically crossed, the intersection point of the first symmetry axis 31 and the second symmetry axis 32 is the central point of the display panel 30, the included angle between the transmission axis 11 of the first polarizer 10 and the first symmetry axis 31 is negative 45 degrees, and the included angle between the transmission axis of the third polarizer 50 or the transmission axis 21 of the second polarizer 20 and the first symmetry axis 31 is positive 45 degrees.
That is, the first symmetry axis 31 and the second symmetry axis 32 form a plane coordinate system, wherein a central point of the display panel 30 is an origin, an included angle between the transmission axis 11 of the first polarizer 10 and the first symmetry axis 31 is negative 45 degrees, and an included angle between the transmission axis of the third polarizer 50 or the transmission axis 21 of the second polarizer 20 and the first symmetry axis 31 is positive 45 degrees. Incident light enters the liquid crystal dimming box 40 from the third polarizer 50, enters the display panel 30 from the second polarizer 20, and then exits from the first polarizer 10, when the display device 100 is in a peep-proof state, peeping prevention is achieved in four arc directions of 0 degrees, 90 degrees, 180 degrees, and 270 degrees of the center point of the display panel 30, the display device 100 with the lowest brightness is seen in the four arc directions of 0 degrees, 90 degrees, 180 degrees, and 270 degrees of the center point of the display panel 30, the display device 100 with the highest brightness can be seen in the front view direction of the display device 100, and the display device 100 with lower brightness can be seen in other arc directions of the center point of the display panel 30, so that peeping prevention in the front side direction, the rear side direction, the left side direction, and the right side direction of the display device 100 is achieved. When the display device 100 is in the sharing state, the brightness of the display device 100 is seen in all the arc directions of the center point of the display panel 30, and the sharing of the display device 100 can be realized.
Referring to fig. 8, 11 and 12, fig. 11 is a schematic top view illustrating a second structure of the first polarizer 10 of the display device 100 provided in the present application, and fig. 12 is a schematic top view illustrating a second structure of the second polarizer 20 of the display device 100 provided in the present application. In other embodiments of the present application, the display panel 30 includes the first symmetry axis 31 and the second symmetry axis 32 that intersect perpendicularly, the first symmetry axis 31 with the crossing point of the second symmetry axis 32 does the central point of the display panel 30, the transmission axis 11 of the first polarizer 10 with the contained angle of the first symmetry axis 31 is positive 45 degrees, the transmission axis of the third polarizer 50 or the transmission axis 21 of the second polarizer 20 with the contained angle of the first symmetry axis 31 is negative 45 degrees.
That is, the first symmetry axis 31 and the second symmetry axis 32 form a plane coordinate system, wherein a central point of the display panel 30 is an origin, an included angle between the transmission axis 11 of the first polarizer 10 and the first symmetry axis 31 is positive 45 degrees, and an included angle between the transmission axis of the third polarizer 50 or the transmission axis 21 of the second polarizer 20 and the first symmetry axis 31 is negative 45 degrees. Incident light enters the liquid crystal dimming box 40 from the third polarizer 50, enters the display panel 30 from the second polarizer 20, and then exits from the first polarizer 10, when the display device 100 is in a peep-proof state, peeping prevention is achieved in four arc directions of 0 degrees, 90 degrees, 180 degrees, and 270 degrees of the center point of the display panel 30, the display device 100 with the lowest brightness is seen in the four arc directions of 0 degrees, 90 degrees, 180 degrees, and 270 degrees of the center point of the display panel 30, the display device 100 with the highest brightness can be seen in the front view direction of the display device 100, and the display device 100 with lower brightness can be seen in other arc directions of the center point of the display panel 30, so that peeping prevention in the front side direction, the rear side direction, the left side direction, and the right side direction of the display device 100 is achieved. When the display device 100 is in the sharing state, the brightness of the display device 100 is seen in all the arc directions of the center point of the display panel 30, and the sharing of the display device 100 can be realized.
Referring to fig. 8, 13 and 14, fig. 13 is a schematic top view of a third structure of the first polarizer 10 of the display device 100 provided in the present application, and fig. 14 is a schematic top view of a third structure of the second polarizer 20 of the display device 100 provided in the present application. In other embodiments of the present application, the display panel 30 includes the first symmetry axis 31 and the second symmetry axis 32 that intersect perpendicularly, the first symmetry axis 31 with the crossing point of the second symmetry axis 32 does the central point of the display panel 30, the transmission axis 11 of the first polarizer 10 with the contained angle of the first symmetry axis 31 is zero degree, the transmission axis of the third polarizer 50 or the transmission axis 21 of the second polarizer 20 with the contained angle of the first symmetry axis 31 is 90 degrees.
That is, the first axis of symmetry 31 and the second axis of symmetry 32 form a plane coordinate system, wherein the center point of the display panel 30 is the origin, the transmission axis 11 of the first polarizer 10 is parallel to the first axis of symmetry 31, and the transmission axis of the third polarizer 50 or the transmission axis 21 of the second polarizer 20 is parallel to the second axis of symmetry 32. Incident light enters the liquid crystal dimming cell 40 from the third polarizer 50, enters the display panel 30 from the second polarizer 20, and then exits from the first polarizer 10, when the display device 100 is in a peep-proof state, peeping is achieved in four arc directions of 45 degrees, 135 degrees, 225 degrees, and 315 degrees of the center point of the display panel 30, the display device 100 with the lowest brightness is seen in the four arc directions of 45 degrees, 135 degrees, 225 degrees, and 315 degrees of the center point of the display panel 30, the display device 100 with the highest brightness can be seen in the front view direction of the display device 100, and the display device 100 with lower brightness can be seen in the other arc directions of the center point of the display panel 30, so that peeping in the front side direction, the rear side direction, the left side direction, and the right side direction of the display device 100 is achieved. When the display device 100 is in the sharing state, the brightness of the display device 100 is seen in all the arc directions of the center point of the display panel 30, and the sharing of the display device 100 can be realized.
It is naturally easy to think that the directions of the transmission axis 11 of the first polarizer 10, the transmission axis of the third polarizer 50 and the transmission axis 21 of the second polarizer 20 may be set in other manners, and it is only necessary to satisfy the following conditions that the transmission axis 11 of the first polarizer 10 is perpendicular to the transmission axis 21 of the second polarizer 20, and the transmission axis of the third polarizer 50 is parallel to the transmission axis 21 of the second polarizer 20.
Referring to fig. 15, fig. 15 is a schematic view of a second structure of the display device 100 provided in the present application. In other embodiments of the present application, the backlight source 60 is disposed on a side of the first polarizer 10 away from the display panel 30. That is, in the present embodiment, the side of the first polarizer 10 is the light incident side.
Specifically, the side of the first polarizer 10 is a light incident side, the display panel 30 is in a display state, and incident light enters the liquid crystal dimming cell 40 from the second polarizer 20 after passing through the display panel 30. When the liquid crystal molecules 412 of the dimming liquid crystal layer 41 of the liquid crystal dimming cell 40 are arranged perpendicular to the second polarizer 20, a user views the display device 100 in the front viewing direction of the display device 100, due to the characteristics of the liquid crystal molecules 412, there is no component in the long axis of the liquid crystal molecules 412 when viewing the incident light in the front viewing direction of the display device 100, the incident light viewed by the user in the front viewing direction of the display device 100 is linear polarized light, and the transmission axis of the third polarizer 50 is parallel to the transmission axis 21 of the second polarizer 20, the third polarizer 50 does not absorb the linear polarized light, the linear polarized light is directly emitted from the third polarizer 50, and finally, the user in the front viewing direction of the display device 100 can view the display device 100 with normal brightness; when a user views the display device 100 in any one of the front direction, the rear direction, the left direction and the right direction (i.e., the non-front viewing direction) of the display device 100, the incident light has a component in the long axis of the liquid crystal molecules 412 when viewing the display device 100 in the non-front viewing direction, the incident light is an elliptical or circular polarized light when viewing the display device 100 in the non-front viewing direction, and the elliptical or circular polarized light is absorbed by the third polarizer 50 and emitted because the transmission axis of the third polarizer 50 is parallel to the transmission axis 21 of the second polarizer 20, and finally the user in the non-front viewing direction of the display device 100 can view the display device 100 with the absorbed brightness; therefore, the brightness of the display device 100 seen by the user in the non-front view direction is different from the brightness of the display device 100 seen by the user in the front view direction, and the display device 100 can be prevented from peeping in the front side direction, the rear side direction, the left side direction, and the right side direction at the same time. When the liquid crystal molecules 412 of the dimming liquid crystal layer 41 of the liquid crystal dimming cell 40 are arranged in parallel to the direction of the third polarizer 50, incident light is scattered when passing through the liquid crystal dimming cell 40, the propagation angle of the incident light is increased, and the brightness of the display device 100 in the front direction, the rear direction, the left direction and the right direction of the display device 100 is improved, so that a user can see the display content of the display device in any one of the front direction, the rear direction, the left direction and the right direction of the display device 100, and the display device 100 is in a sharing state, thereby realizing the sharing of the display device 100.
The foregoing detailed description is directed to a display device provided in an embodiment of the present application, and specific examples are used herein to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (11)
1. A display device, comprising:
a first polarizer;
the first polaroid and the second polaroid are oppositely arranged;
the display panel is arranged between the first polaroid and the second polaroid;
the liquid crystal dimming box is arranged on one side, far away from the display panel, of the second polarizer and comprises a dimming liquid crystal layer;
the third polaroid is arranged on one side, far away from the second polaroid, of the liquid crystal dimming box;
the transmission axis of the first polarizer is perpendicular to the transmission axis of the second polarizer, and the transmission axis of the third polarizer is parallel to the transmission axis of the second polarizer.
2. The display device according to claim 1, wherein the display panel comprises a first axis of symmetry and a second axis of symmetry that intersect perpendicularly, an intersection of the first axis of symmetry and the second axis of symmetry is a center point of the display panel, an angle between a transmission axis of the first polarizer and the first axis of symmetry is negative 45 degrees, and an angle between a transmission axis of the third polarizer or a transmission axis of the second polarizer and the first axis of symmetry is positive 45 degrees.
3. The display device according to claim 1, wherein the display panel comprises a first axis of symmetry and a second axis of symmetry that intersect perpendicularly, an intersection of the first axis of symmetry and the second axis of symmetry is a center point of the display panel, an angle between a transmission axis of the first polarizer and the first axis of symmetry is positive 45 degrees, and an angle between a transmission axis of the third polarizer or a transmission axis of the second polarizer and the first axis of symmetry is negative 45 degrees.
4. The display device according to claim 1, wherein the display panel comprises a first axis of symmetry and a second axis of symmetry that intersect perpendicularly, an intersection of the first axis of symmetry and the second axis of symmetry is a center point of the display panel, an angle between a transmission axis of the first polarizer and the first axis of symmetry is zero degrees, and an angle between a transmission axis of the third polarizer or a transmission axis of the second polarizer and the first axis of symmetry is 90 degrees.
5. The display device of claim 1, further comprising a backlight source, the backlight source being a collimated light source.
6. The display device according to claim 1, further comprising a backlight source disposed on a side of the first polarizer remote from the display panel.
7. The display device according to claim 1, further comprising a backlight source disposed on a side of the third polarizer remote from the liquid crystal dimming cell.
8. The display device according to claim 1, wherein the liquid crystal dimming cell comprises:
a first electrode;
a second electrode disposed opposite the first electrode;
the dimming liquid crystal layer is disposed between the first electrode and the second electrode.
9. The display device of claim 8, wherein the dimming liquid crystal layer comprises a polymer network and liquid crystal molecules distributed in the polymer network.
10. The display device according to claim 9, wherein the liquid crystal molecules are negative liquid crystal molecules or positive liquid crystal molecules.
11. The display device according to claim 8, wherein the liquid crystal dimming cell further comprises:
the first alignment layer is arranged on one side of the first electrode close to the second electrode;
and the second alignment layer is arranged on one side of the second electrode close to the first electrode.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070019574A (en) * | 2005-08-12 | 2007-02-15 | 후지필름 홀딩스 가부시끼가이샤 | Liquid crystal display device |
| US20070036917A1 (en) * | 2005-08-12 | 2007-02-15 | Fuji Photo Film Co., Ltd. | Liquid crystal display device |
| CN202600307U (en) * | 2012-06-12 | 2012-12-12 | 北京京东方光电科技有限公司 | Liquid crystal display device |
| CN103149740A (en) * | 2013-03-29 | 2013-06-12 | 京东方科技集团股份有限公司 | Display panel and 3D (three-dimensional) display device |
| CN105842909A (en) * | 2016-06-16 | 2016-08-10 | 京东方科技集团股份有限公司 | Liquid crystal display (LCD) and manufacturing method thereof |
| TWM563556U (en) * | 2017-12-26 | 2018-07-11 | 揚昇照明股份有限公司 | Viewing angle switchable device and viewing angle switchable display module |
| CN208126055U (en) * | 2018-04-28 | 2018-11-20 | 扬升照明股份有限公司 | Display device |
| CN112379550A (en) * | 2020-11-13 | 2021-02-19 | 昆山龙腾光电股份有限公司 | Display panel, driving method and display device |
| CN113552741A (en) * | 2021-08-13 | 2021-10-26 | 武汉华星光电技术有限公司 | Peep-proof film, display panel and display device |
| CN114167632A (en) * | 2021-12-10 | 2022-03-11 | 武汉华星光电技术有限公司 | Display device |
| CN114236888A (en) * | 2021-12-14 | 2022-03-25 | 武汉华星光电技术有限公司 | Display device and display terminal |
| CN114545664A (en) * | 2020-11-24 | 2022-05-27 | 京东方科技集团股份有限公司 | Peep-proof panel, display device and control method of display device |
-
2022
- 2022-04-25 CN CN202210439765.XA patent/CN114706244B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070019574A (en) * | 2005-08-12 | 2007-02-15 | 후지필름 홀딩스 가부시끼가이샤 | Liquid crystal display device |
| US20070036917A1 (en) * | 2005-08-12 | 2007-02-15 | Fuji Photo Film Co., Ltd. | Liquid crystal display device |
| CN202600307U (en) * | 2012-06-12 | 2012-12-12 | 北京京东方光电科技有限公司 | Liquid crystal display device |
| CN103149740A (en) * | 2013-03-29 | 2013-06-12 | 京东方科技集团股份有限公司 | Display panel and 3D (three-dimensional) display device |
| CN105842909A (en) * | 2016-06-16 | 2016-08-10 | 京东方科技集团股份有限公司 | Liquid crystal display (LCD) and manufacturing method thereof |
| TWM563556U (en) * | 2017-12-26 | 2018-07-11 | 揚昇照明股份有限公司 | Viewing angle switchable device and viewing angle switchable display module |
| CN208126055U (en) * | 2018-04-28 | 2018-11-20 | 扬升照明股份有限公司 | Display device |
| CN112379550A (en) * | 2020-11-13 | 2021-02-19 | 昆山龙腾光电股份有限公司 | Display panel, driving method and display device |
| CN114545664A (en) * | 2020-11-24 | 2022-05-27 | 京东方科技集团股份有限公司 | Peep-proof panel, display device and control method of display device |
| CN113552741A (en) * | 2021-08-13 | 2021-10-26 | 武汉华星光电技术有限公司 | Peep-proof film, display panel and display device |
| CN114167632A (en) * | 2021-12-10 | 2022-03-11 | 武汉华星光电技术有限公司 | Display device |
| CN114236888A (en) * | 2021-12-14 | 2022-03-25 | 武汉华星光电技术有限公司 | Display device and display terminal |
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