CN114706244B - display device - Google Patents
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- CN114706244B CN114706244B CN202210439765.XA CN202210439765A CN114706244B CN 114706244 B CN114706244 B CN 114706244B CN 202210439765 A CN202210439765 A CN 202210439765A CN 114706244 B CN114706244 B CN 114706244B
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- display device
- polarizer
- liquid crystal
- polaroid
- transmission axis
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 95
- 230000005540 biological transmission Effects 0.000 claims abstract description 71
- 229920000642 polymer Polymers 0.000 claims description 8
- 230000010287 polarization Effects 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 244000144985 peep Species 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
- 238000000034 method Methods 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
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial 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
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—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
-
- 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
Landscapes
- 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 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 at one side of the second polaroid away from the display panel; the third polaroid is arranged at one side of the liquid crystal dimming box, which is far away from the second polaroid; the transmission axis of the first polaroid is perpendicular to the transmission axis of the second polaroid, and the transmission axis of the third polaroid is parallel to the transmission axis of the second polaroid. According to the display device, the light rays of the display device are adjusted through the liquid crystal dimming box and the third polaroid, when the display device is in the peep-proof state, the light rays of the display device in the front view direction of the display device are in the normal brightness state, and the light rays in the front side direction, the rear side direction, the left side direction and the right side direction of the display device are in the lower brightness state, so that the peep-proof of the display device in four directions is realized.
Description
Technical Field
The application relates to the technical field of display, in particular to a display device.
Background
With the popularity and increased use of display devices, such as smartphones, notebook computers, tablet computers, etc., users have become interested in being able to read sensitive or private information by other individuals. In public places, users pay more and more attention to personal information privacy, and the concept of the peep-proof display device is gradually focused on by the users. The original peep-proof device is that a layer of peep-proof film is stuck on the outer surface of the display device, so that the left and right blackening can be realized, but the peep-proof film can reduce the brightness of the display device, and the peep-proof mode and the non-peep-proof mode can not be switched. Therefore, the existing switchable peep-proof display device is usually to additionally add a light adjusting box on the basis of the existing display to control the light rays in the left and right directions of the display device, so as to realize the left and right switchable peep-proof. The conventional switchable peep-proof display device can only realize peep prevention in the left-right direction, but cannot realize peep prevention in the front-side direction, the rear-side direction, the left-side direction and the right-side direction at the same time.
Disclosure of Invention
The application provides a display device to realize peep prevention in a front side direction, a rear side direction, a left side direction and a right side direction at the same time.
The present application provides a display device, which 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 polaroid, which is far away from the display panel, and comprises a dimming liquid crystal layer;
the third polaroid is arranged at one side of the liquid crystal dimming box, which is far away from the second polaroid;
the transmission axis of the first polaroid is perpendicular to the transmission axis of the second polaroid, and the transmission axis of the third polaroid is parallel to the transmission axis of the second polaroid.
Optionally, in some embodiments of the present application, the display panel includes a first symmetry axis and a second symmetry axis that intersect perpendicularly, an intersection point of the first symmetry axis and the second symmetry axis is a center point of the display panel, an included angle between a transmission axis of the first polarizer and the first symmetry axis is minus 45 degrees, and an included angle between a transmission axis of the third polarizer or a transmission axis of the second polarizer and the first symmetry axis is plus 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, an intersection point of the first symmetry axis and the second symmetry axis is a center point of the display panel, an included angle between a transmission axis of the first polarizer and the first symmetry axis is positive 45 degrees, and an included angle between a transmission axis of the third polarizer or a transmission axis of the second polarizer and the first symmetry axis is 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, an intersection point of the first symmetry axis and the second symmetry axis is a center point of the display panel, an included angle between a transmission axis of the first polarizer and the first symmetry axis is zero degrees, and an included angle between a transmission axis of the third polarizer or a transmission axis of the second polarizer and the first symmetry axis is 90 degrees.
Optionally, in some embodiments of the present application, the display device further includes a backlight light source, where 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 away from the display panel.
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 third polarizer away from the lc dimming cell.
Optionally, in some embodiments of the present application, the liquid crystal dimming cell includes:
a first electrode;
a second electrode disposed opposite to the first electrode;
the dimming liquid crystal layer is arranged 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.
Alternatively, 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 box further includes:
the first alignment layer is arranged on one side of the first electrode, which is close to the second electrode;
and the second alignment layer is arranged on one side of the second electrode, which is 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 box further includes:
the first substrate is arranged on one side of the first electrode, which is far away from the second electrode;
the second substrate is arranged on one side of the second electrode far away from the first electrode.
The present application provides a display device, which 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 at one side of the second polaroid far away from the display panel; the third polaroid is arranged at one side of the liquid crystal dimming box, which is far away from the second polaroid; the transmission axis of the first polaroid is perpendicular to the transmission axis of the second polaroid, and the transmission axis of the third polaroid is parallel to the transmission axis of the second polaroid. According to the display device, the light rays of the display device are adjusted through the liquid crystal dimming box and the third polaroid, when the display device is in the peep-proof state, the light rays of the display device in the front view direction of the display device are in the normal brightness state, and the light rays in the front side direction, the rear side direction, the left side direction and the right side direction of the display device are in the lower brightness state, so that the peep-proof of the display device in the front side direction, the rear side direction, the left side direction and the right side direction is achieved.
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 introduced 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 inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a first structure of a display device provided in the present application;
fig. 2 is a schematic view of 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 in the present application is in a peep-proof state;
FIG. 3 is a schematic view showing the intersection of liquid crystal molecules of a liquid crystal light adjusting box and a light line in the front view direction of the display device when the display device is in a peep-proof state;
FIG. 4 is a schematic view showing the intersection of liquid crystal molecules of a liquid crystal light adjusting box and a light line in the front or rear direction of the display device when the display device is in a peep-proof state;
fig. 5 is a schematic view of light propagation in a left direction and a right direction of the display device when the display device provided in the present application is in a peep-proof state;
fig. 6 is a schematic view showing the intersection of liquid crystal molecules of the liquid crystal dimming box and a light line in the left or right direction of the display device when the display device is in the peep-proof state;
FIG. 7 is a schematic diagram showing light propagation in a liquid crystal dimming 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 by the present application;
FIG. 9 is a schematic top view of a first structure of a first polarizer of the display device provided herein;
FIG. 10 is a schematic top view of a first structure of a second polarizer of the display device provided herein;
FIG. 11 is a schematic top view of a second structure of a first polarizer of the display device provided herein;
FIG. 12 is a schematic top view of a second structure of a second polarizer of the display device provided herein;
FIG. 13 is a schematic top view of a third structure of a first polarizer of the display device provided herein;
FIG. 14 is a schematic top view of a third structure of a second polarizer of the display device provided herein;
fig. 15 is a schematic view of a second structure of the display device provided in the present application.
Detailed Description
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, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, it should 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 illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, 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" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
With the popularity and increased use of display devices, such as smartphones, notebook computers, tablet computers, etc., users have become interested in being able to read sensitive or private information by other individuals. In public places, users pay more and more attention to personal information privacy, and the concept of the peep-proof display device is gradually focused on by the users. Therefore, the existing switchable peep-proof display device is usually to add a light adjusting box on the basis of the existing display to control the light rays of the display device in the opposite directions of the two sides, so as to realize the switchable peep-proof in the opposite directions of the two sides. However, the conventional switchable privacy display device cannot realize privacy in the front side direction, the rear side direction, the left side direction and the right side direction at the same time.
The present application provides a display device 100, which is described in detail below. It should be noted that the following description order 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 diagram of a first structure of a display device 100 provided in 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 disposed opposite to each other, and the display panel 30 is disposed between the first polarizer 10 and the second polarizer 20; the liquid crystal dimming box 40 is disposed at a side of the second polarizer 20 away from the display panel 30, the liquid crystal dimming box 40 includes a dimming liquid crystal layer 41, and the third polarizer 50 is disposed at a side of the liquid crystal dimming box 40 away from the second polarizer 20;
wherein, 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.
The liquid crystal dimming cell 40 changes the direction of the light entering the liquid crystal dimming cell 40 by adjusting the alignment angle of the liquid crystal molecules 412. The materials of the first polarizer 10, the second polarizer 20 and the third polarizer 50 are polyvinyl alcohol films, the polyvinyl alcohol films have high temperature and humidity resistant characteristics, and the temperature and humidity resistant material characteristics of the polyvinyl alcohol films can realize the high temperature and humidity resistant characteristics by adjusting the formula, the stretching multiplying power and the stretching rate of the polyvinyl alcohol iodine solution.
The application is provided with the liquid crystal dimming box 40 and the third polaroid 50, and the light rays of the display device 100 are regulated through the liquid crystal dimming box 40 and the third polaroid 50, when the display device 100 is in a peep-proof state, the light rays of the display device 100 in the front view direction of the display device 100 are in a normal brightness state, and the light rays in the front side direction, the rear side direction, the left side direction and the right side direction of the display device 100 are in a lower brightness state, so that the 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 is realized.
In some embodiments, the display device 100 further comprises a backlight source 60, the backlight source 60 being a collimated light source. The collimating light source has better display effect, and is beneficial to reducing the loss of the light source in the propagation process.
In some embodiments, the backlight source 60 is disposed on a side of the third polarizer 50 away from the lc dimming cell 40. That is, in this embodiment, the side of the third polarizer 50 is the light incident side.
In some embodiments, the lc dimming box 40 includes:
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 material or aluminum doped zinc oxide transparent conductive material. The present application modulates the dimming liquid crystal layer 41 by forming an 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 cause the refractive index difference between the liquid crystal molecules 412 and the polymer, so that the light is scattered, and the effect of the sharing mode is better.
Still further, the liquid crystal molecules 412 are either negative liquid crystal molecules or positive liquid crystal molecules. The positive liquid crystal molecules are different from the negative liquid crystal molecules 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 peep-proof mode; when an electric field is formed between the first electrode 42 and the second electrode 43 after power is applied so that the negative liquid crystal molecules are in horizontal alignment, correspondingly, the display device 100 of the present application is in the sharing mode. Therefore, the power consumption of the display device 100 can be reduced by using the negative liquid crystal molecules, and the first electrode 42 and the second electrode 43 do not need to be electrified when the display device 100 of the present application is in the peep-preventing mode. The initial alignment of the positive liquid crystal molecules is horizontal alignment, and accordingly, the display device 100 of the present application is in the sharing mode; an electric field is formed between the first electrode 42 and the second electrode 43 after the power is applied so that the positive liquid crystal molecules are in a vertical alignment, and when the positive liquid crystal molecules are in a vertical alignment, correspondingly, the display device 100 of the present application is in a peep-proof mode.
In some embodiments, the lc dimming box 40 further comprises:
a first alignment layer 44, wherein the first alignment layer 44 is disposed on one side of the first electrode 42 near the second electrode 43;
and a second alignment layer 45, wherein the second alignment layer 45 is disposed on one side of the second electrode 43 near the first electrode 42.
The liquid crystal molecules 412 are pre-aligned by the first alignment layer 44 and the second alignment layer 45, wherein the first alignment layer 44 and the second alignment layer 45 include polyimide alignment films.
In some embodiments, the lc dimming box 40 further comprises:
a first substrate 46, wherein the first substrate 46 is disposed on a side of the first electrode 42 away from the second electrode 43;
and a second substrate 47, wherein the second substrate 47 is disposed on a side of the second electrode 43 away from the first electrode 42.
The liquid crystal dimming cell 40 is supported by providing a first substrate 46 and a second substrate 47, wherein the materials of the first substrate 46 and the second substrate 47 may be glass, polyester resin, transparent polyimide, ultra-thin glass, and the like.
Referring to fig. 2 to 6, fig. 2 is a schematic diagram of light propagation in a front view direction, a front side direction and a rear side direction of the display device 100 provided in the present application when the display device 100 is in the peep-proof state, fig. 3 is a schematic diagram of intersection between liquid crystal molecules of the liquid crystal dimming box 40 and a light line in the front view direction of the display device 100 when the display device 100 provided in the present application is in the peep-proof state, fig. 4 is a schematic diagram of intersection between liquid crystal molecules of the liquid crystal dimming box 40 and a light line in the front side direction or the rear side direction of the display device 100 when the display device 100 provided in the present application is in the peep-proof state, fig. 5 is a schematic diagram of light propagation in the left side direction and the right side direction of the display device 100 when the display device 100 provided in the peep-proof state, and fig. 6 is a schematic diagram of intersection between liquid crystal molecules of the liquid crystal dimming box 40 and a light line in the left side direction or the right side direction of the display device 100 when the display device 100 provided in the present application is in the peep-proof state. Specifically, the side of the third polarizer 50 is the light incident side, the display panel 30 is in a display state, and the incident light enters the lc light-adjusting box 40 from the third polarizer 50. When the liquid crystal molecules 412 of the dimming liquid crystal layer 41 of the liquid crystal dimming box 40 are aligned perpendicular to the direction of the third polarizer 50, referring to fig. 2 and 3, the user views the display device 100 in the front view direction of the display device 100, because the liquid crystal molecules 412 have no component of the incident light in the long axis of the liquid crystal molecules 412 when viewing the display device 100 in the front view direction, the incident light seen by the user in the front view direction of the display device 100 is linearly polarized light, 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 is directly emitted from the first polarizer 10 after entering the display panel 30 from the second polarizer 20, and finally the user can see the display device 100 with normal brightness in the front view direction of the display device 100; referring to fig. 2, 4 to 6, 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 direction) of the display device 100, the incident light has a component in the long axis of the liquid crystal molecules 412 when viewed in the non-front direction of the display device 100, and the incident light is elliptical or circular polarized light when viewed by the user in the non-front direction of the display device 100, and the transmission axis of the third polarizer 50 is parallel to the transmission axis 21 of the second polarizer 20, so that the elliptical or circular polarized light is absorbed by the second polarizer 20 and then enters the display panel 30, and then is emitted from the first polarizer 10, and finally the user in the non-front direction of the display device 100 can see the display device 100 with brightness absorbed; therefore, the user in the non-front view direction of the display device 100 is different from the user in the front view direction of the display device 100 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 diagram illustrating the transmission of light in the lc dimming box 40 when the display device 100 provided in the present application is in the sharing state, when the lc molecules 412 of the dimming lc layer 41 of the lc dimming box 40 are aligned parallel to the direction of the third polarizer 50, the incident light is scattered when passing through the lc dimming box 40, and the transmission angle of the incident light is increased, so that 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 increased, and the 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, so that the display device 100 is in the sharing state and the sharing of the display device 100 can be realized.
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 includes a first symmetry axis 31 and a second symmetry axis 32 that vertically intersect, an intersection point of the first symmetry axis 31 and the second symmetry axis 32 is a center point of the display panel 30, an included angle between the transmission axis 11 of the first polarizer 10 and the first symmetry axis 31 is minus 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 plus 45 degrees.
That is, the first symmetry axis 31 and the second symmetry axis 32 form a plane coordinate system, wherein a center point of the display panel 30 is an origin, an angle between the transmission axis 11 of the first polarizer 10 and the first symmetry axis 31 is minus 45 degrees, and an 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 plus 45 degrees. After entering the liquid crystal dimming box 40 from the third polarizer 50, the incident light enters the display panel 30 from the second polarizer 20, and then is emitted from the first polarizer 10, when the display device 100 is in a peep-proof state, peep-proof is achieved in four radians of 0 degree, 90 degree, 180 degree and 270 degree of the center point of the display panel 30, the display device 100 with the lowest brightness is seen in the four radians of 0 degree, 90 degree, 180 degree and 270 degree of the center point of the display panel 30, the display device 100 with the highest brightness is seen in the front view direction of the display device 100, and the display device 100 with lower brightness is seen in other radians of the center point of the display panel 30, so that peep-proof 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 almost seen in all the radians of the center point of the display panel 30, so that the sharing of the display device 100 can be realized.
Referring to fig. 8, 11 and 12, fig. 11 is a schematic top view of 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 of 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 a first symmetry axis 31 and a second symmetry axis 32 that intersect perpendicularly, an intersection point of the first symmetry axis 31 and the second symmetry axis 32 is a center point of the display panel 30, 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.
That is, the first symmetry axis 31 and the second symmetry axis 32 form a plane coordinate system, wherein a center point of the display panel 30 is an origin, an angle between the transmission axis 11 of the first polarizer 10 and the first symmetry axis 31 is positive 45 degrees, and an 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. After entering the liquid crystal dimming box 40 from the third polarizer 50, the incident light enters the display panel 30 from the second polarizer 20, and then is emitted from the first polarizer 10, when the display device 100 is in a peep-proof state, peep-proof is achieved in four radians of 0 degree, 90 degree, 180 degree and 270 degree of the center point of the display panel 30, the display device 100 with the lowest brightness is seen in the four radians of 0 degree, 90 degree, 180 degree and 270 degree of the center point of the display panel 30, the display device 100 with the highest brightness is seen in the front view direction of the display device 100, and the display device 100 with lower brightness is seen in other radians of the center point of the display panel 30, so that peep-proof 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 almost seen in all the radians of the center point of the display panel 30, so that 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 a first symmetry axis 31 and a second symmetry axis 32 that perpendicularly intersect, an intersection point of the first symmetry axis 31 and the second symmetry axis 32 is a center point of the display panel 30, an included angle between the transmission axis 11 of the first polarizer 10 and the first symmetry axis 31 is zero 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 90 degrees.
That is, the first symmetry axis 31 and the second symmetry axis 32 form a plane coordinate system, wherein a center point of the display panel 30 is an origin, the transmission axis 11 of the first polarizer 10 is parallel to the first symmetry axis 31, and the transmission axis 50 or the transmission axis 21 of the second polarizer 20 is parallel to the second symmetry axis 32. After entering the liquid crystal dimming box 40 from the third polarizer 50, the incident light enters the display panel 30 from the second polarizer 20, and then is emitted from the first polarizer 10, when the display device 100 is in a peep-proof state, peep-proof is achieved in four radians 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 radians 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 is seen in the front view direction of the display device 100, and the display device 100 with lower brightness is seen in other radians of the center point of the display panel 30, so that peep-proof 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 almost seen in all the radians of the center point of the display panel 30, so that the sharing of the display device 100 can be realized.
It is of course 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 ways, and the following condition may be satisfied, where 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 diagram 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 this embodiment, the side of the first polarizer 10 is the light incident side.
Specifically, the side of the first polarizer 10 is the light incident side, the display panel 30 is in a display state, and the incident light passes through the display panel 30 and then enters the lc light modulation box 40 from the second polarizer 20. When the liquid crystal molecules 412 of the dimming liquid crystal layer 41 of the liquid crystal dimming box 40 are aligned perpendicular to the direction of the second polarizer 20, the user views the display device 100 in the front view direction of the display device 100, due to the characteristics of the liquid crystal molecules 412, the incident light does not have a component in the long axis of the liquid crystal molecules 412 when viewing the display device 100 in the front view direction, the incident light viewed by the user in the front view direction of the display device 100 is linearly polarized light, 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 linearly polarized light, the linearly polarized light is directly emitted from the third polarizer 50, and finally the user in the front view direction of the display device 100 can view the display device 100 with normal brightness; the 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 direction) of the display device 100, the incident light has a component in the long axis of the liquid crystal molecule 412 when viewing the display device 100 in the non-front direction, the incident light is elliptical or circular polarized light when viewing the display device 100 by the user in the non-front direction, and the transmission axis of the third polarizer 50 is parallel to the transmission axis 21 of the second polarizer 20, so that the elliptical or circular polarized light is absorbed by the third polarizer 50 and then emitted, and finally the user in the non-front direction of the display device 100 can see the display device 100 with the absorbed brightness; accordingly, the user in the non-front view direction of the display apparatus 100 may not see the same brightness as the user in the front view direction of the display apparatus 100, and thus may realize peep prevention of the display apparatus 100 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 aligned parallel to the direction of the third polarizer 50, the incident light is scattered when passing through the liquid crystal dimming cell 40, and the propagation angle of the incident light is increased, so that 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, and the 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, so that the sharing of the display device 100 can be realized.
The foregoing has described in detail a display device provided by embodiments of the present application, and specific examples have been set forth herein to illustrate the principles and embodiments of the present application, the above examples being provided only to assist in understanding the methods of the present application and their core ideas; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the contents of the present specification should not be construed as limiting the present application in summary.
Claims (9)
1. A display device, comprising:
a first polarizer;
a second polarizer, the first polarizer and the second polarizer are arranged oppositely ；
The display panel is arranged between the first polaroid and the second polaroid, and comprises a first symmetrical axis and a second symmetrical axis which are perpendicularly intersected, and the intersection point of the first symmetrical axis and the second symmetrical axis is the center point of the display panel;
the liquid crystal dimming box is arranged on one side of the second polaroid, which is far away from the display panel, and comprises a dimming liquid crystal layer;
the third polaroid is arranged at one side of the liquid crystal dimming box, which is far away from the second polaroid;
the transmission axis of the first polaroid is perpendicular to the transmission axis of the second polaroid, and the transmission axis of the third polaroid is parallel to the transmission axis of the second polaroid;
the dimming liquid crystal layer comprises liquid crystal molecules, wherein the liquid crystal molecules are negative liquid crystal molecules or positive liquid crystal molecules;
the display device is provided with a peep-proof mode, in the peep-proof mode, the liquid crystal molecules are perpendicular to the second polaroid, and the transmission axis of the first polaroid, the first symmetry axis and the second symmetry axis are all arranged in an included angle, so that the polarization direction of light rays emitted towards the four sides of the display panel is changed after passing through the liquid crystal molecules.
2. The display device of claim 1, wherein an included angle between a transmission axis of the first polarizer and the first symmetry axis is minus 45 degrees, and an included angle between a transmission axis of the third polarizer or the transmission axis of the second polarizer and the first symmetry axis is plus 45 degrees.
3. The display device of claim 1, wherein an included angle between a transmission axis of the first polarizer and the first symmetry axis is positive 45 degrees, and an included angle between a transmission axis of the third polarizer or the transmission axis of the second polarizer and the first symmetry axis is negative 45 degrees.
4. The display device of claim 1, further comprising a backlight source, the backlight source being a collimated light source.
5. The display device of claim 1, further comprising a backlight source disposed on a side of the first polarizer remote from the display panel.
6. The display device of claim 1, further comprising a backlight source disposed on a side of the third polarizer remote from the lc dimming cell.
7. The display device according to claim 1, wherein the liquid crystal dimming cell comprises:
a first electrode;
a second electrode disposed opposite to the first electrode;
the dimming liquid crystal layer is arranged between the first electrode and the second electrode.
8. The display device of claim 7, wherein the dimming liquid crystal layer further comprises a polymer network;
wherein the liquid crystal molecules are distributed in the polymer network.
9. The display device according to claim 7, wherein the liquid crystal dimming cell further comprises:
the first alignment layer is arranged on one side of the first electrode, which is close to the second electrode;
and the second alignment layer is arranged on one side of the second electrode, which is close to the first electrode.
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