CN108363250B - Display panel, display assembly, display device and peep-proof method thereof - Google Patents
Display panel, display assembly, display device and peep-proof method thereof Download PDFInfo
- Publication number
- CN108363250B CN108363250B CN201810241858.5A CN201810241858A CN108363250B CN 108363250 B CN108363250 B CN 108363250B CN 201810241858 A CN201810241858 A CN 201810241858A CN 108363250 B CN108363250 B CN 108363250B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- display
- peep
- electrode
- crystal cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
-
- 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
-
- 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
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
Abstract
The embodiment of the invention provides a display panel, a display assembly, a display device and an anti-peeping method thereof, relates to the technical field of display, and has the advantages of simple preparation process and cost saving compared with the prior art. A display panel, comprising: the display liquid crystal box and the peep-proof liquid crystal box are sequentially arranged towards the display side of the display panel; a display liquid crystal cell comprising: the liquid crystal display panel comprises a first liquid crystal layer, a plurality of groups of pixel electrodes and a plurality of groups of common electrodes, wherein the pixel electrodes and the common electrodes are used for driving the first liquid crystal layer to deflect; the multiple groups of pixel electrodes and the common electrode are used for inputting first voltages corresponding to images to be displayed; a privacy liquid crystal cell comprising: the liquid crystal display comprises a second liquid crystal layer, a first electrode and a second electrode, wherein the first electrode and the second electrode are used for driving the second liquid crystal layer to deflect; and the second voltage input by the first electrode and the second electrode is used for switching the peep-proof liquid crystal box between the non-peep-proof state and the peep-proof state.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a display assembly, a display device and an anti-peeping method thereof.
Background
With the development of network technology, more and more people carry out operations such as shopping or account transaction on the network, and in the process of the operations, operators often need to input personal information on display devices such as computers, mobile phones, automatic teller machines and automatic ticket dispensers, so that personal information is easily leaked. Therefore, the peep prevention performance of the display device is receiving more and more attention.
With the gradual maturity of the related technologies of Liquid Crystal Displays (LCDs), more and more new products, such as anti-peeping products, emerge.
Currently, a common anti-peeping product includes a display device and glasses, wherein a polarizer is disposed on one side of an array substrate on the display device, and a lens of the glasses includes a polarizer corresponding to the polarizer on one side of the array substrate on the display device. When a user wears the glasses, the user can see the picture displayed on the display device and carry out corresponding operation; when the user does not wear the glasses, the user can only see the white picture on the display device, thereby realizing peep prevention.
However, such a privacy product is expensive because it must rely on glasses corresponding to the display device.
Disclosure of Invention
Embodiments of the present invention provide a display panel, a display module, a display device and a peep-proof method thereof, which are simple in preparation process and cost-saving compared to the prior art.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, a display panel is provided, including: the display liquid crystal box and the peep-proof liquid crystal box are sequentially arranged towards the display side of the display panel; the display liquid crystal cell includes: the liquid crystal display panel comprises a first liquid crystal layer, a plurality of groups of pixel electrodes and a common electrode, wherein the pixel electrodes and the common electrode are used for driving the first liquid crystal layer to deflect; the pixel electrodes and the common electrodes are used for inputting first voltages corresponding to images to be displayed; the peep-proof liquid crystal box comprises: the liquid crystal display comprises a second liquid crystal layer, a first electrode and a second electrode, wherein the first electrode and the second electrode are used for driving the second liquid crystal layer to deflect; and the second voltage input by the first electrode and the second electrode is used for switching the peep-proof liquid crystal box between a non-peep-proof state and a peep-proof state.
Preferably, the display liquid crystal cell further includes a first substrate for disposing the pixel electrode and the common electrode, and a second substrate opposite to the first substrate; the first substrate further comprises a first alignment layer, and the second substrate comprises a second alignment layer; the orientation directions of the first orientation layer and the second orientation layer are the same.
Preferably, the peep-proof liquid crystal box further comprises a third substrate for arranging the first electrode and a fourth substrate for arranging the second electrode; the third substrate further comprises a third alignment layer, and the fourth substrate further comprises a fourth alignment layer; the orientation directions of the third orientation layer and the fourth orientation layer are mutually vertical; alternatively, the third alignment layer and the fourth alignment layer have the same alignment direction.
Preferably, the display liquid crystal cell is an ADS liquid crystal cell, or an IPS liquid crystal cell; under the condition that the alignment directions of the third alignment layer and the fourth alignment layer are mutually vertical, the peep-proof liquid crystal box is a TN (twisted nematic) liquid crystal box; under the condition that the alignment directions of the third alignment layer and the fourth alignment layer are the same, the peep-proof liquid crystal box is a VA liquid crystal box.
Preferably, the second substrate is common to the third substrate.
Preferably, the display device further comprises a color film layer, wherein the color film layer is arranged in the display liquid crystal box, or the color film layer is arranged in the peep-proof liquid crystal box.
In a second aspect, a display module is provided, which includes the display panel of the first aspect, and a first polarizer and a second polarizer; the first polaroid is arranged on one side, away from the second liquid crystal layer, of the first liquid crystal layer, and the second polaroid is arranged on one side, away from the first liquid crystal layer, of the second liquid crystal layer.
Preferably, the polarizing axes of the first polarizer and the second polarizer are orthogonal; or the polarizing axes of the first polarizer and the second polarizer are parallel.
In a third aspect, a display device is provided, which comprises the display assembly of the second aspect.
In a fourth aspect, there is provided a peeping prevention method of the display device according to the third aspect, comprising: inputting a first voltage corresponding to an image to be displayed by a pixel electrode and a common electrode of a display liquid crystal box; and inputting a second voltage to the first electrode and the second electrode of the peep-proof liquid crystal box, so that the peep-proof liquid crystal box is switched between a non-peep-proof state and a peep-proof state.
The embodiment of the invention provides a display panel, a display assembly, a display device and an anti-peeping method thereof, wherein the display panel comprises a display liquid crystal box and an anti-peeping liquid crystal box, a plurality of groups of pixel electrodes and a common electrode in the display liquid crystal box input first voltages corresponding to images to be displayed so that the display panel displays the images to be displayed, and when the display panel integrally displays a white state, a user can see the display images displayed by the display panel. A first voltage is input to a first electrode and a second electrode of the peep-proof liquid crystal box to drive the second liquid crystal layer to deflect, when the polarization direction of light emitted from the peep-proof liquid crystal box is the same as the polarization direction of the second polarizer, if liquid crystal molecules in the second liquid crystal layer are in a vertical 'standing' (that is, the long axes of the liquid crystal molecules are vertical to the fourth substrate) state, light of a display image viewed by a user on the front side of the display panel is refracted and emitted through the long axes of the liquid crystal molecules in the second liquid crystal layer, light of the display image viewed by the user on the side of the display panel is refracted and emitted through the short axes of the liquid crystal molecules in the second liquid crystal layer, and at this time, the brightness of light refracted and emitted from the long axes of the liquid crystal molecules is higher than that of light refracted and emitted through the short axes of the liquid crystal molecules, so that the user can normally view the display image displayed by the display panel on the front side of the display panel, The display image seen from the side surface of the display panel is blurred, so that the peep-proof function is realized; when the polarization direction of the light emitted from the peep-proof liquid crystal cell is the same as the polarization direction of the second polarizer, if the liquid crystal molecules in the second liquid crystal layer are in a horizontal "lying" (i.e., the long axes of the liquid crystal molecules are parallel to the fourth substrate) state, the light of the display image viewed by the user on the front side of the display panel is refracted and emitted through the short axes of the liquid crystal molecules in the second liquid crystal layer, and the light of the display image viewed by the user on the side of the display panel is refracted and emitted through the long axes of the liquid crystal molecules in the second liquid crystal layer. Compared with the prior art, the preparation process is simple, and the cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a peep-proof display assembly according to an embodiment of the present invention.
Reference numerals:
10-display liquid crystal cell; 11-a first substrate; 12-a common electrode; 13-pixel electrode; 14-a first alignment layer; 15-a first liquid crystal layer; 16-a second alignment layer; 17-a second substrate; 20-a privacy box; 21-a third substrate; 22-a first electrode; 23-a third alignment layer; 24-a second liquid crystal layer; 25-a fourth alignment layer; 26-a second electrode; 27-a fourth substrate; 31-a first polarizer; 32-second polarizer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
An embodiment of the present invention provides a display panel, as shown in fig. 1, including: a display liquid crystal box 10 and a peep-proof liquid crystal box 20 which are arranged in sequence towards the display side of the display panel; a liquid crystal cell 10 is shown comprising: a first liquid crystal layer 15, and multiple sets of pixel electrodes 13 and common electrodes 12 for driving the first liquid crystal layer 15 to deflect, wherein the pixel electrodes 13 and the common electrodes 12 are positioned on the same side of the first liquid crystal layer 15; the multiple groups of pixel electrodes 13 and the common electrode 12 are used for inputting first voltages corresponding to an image to be displayed; privacy liquid crystal cell 20 comprising: a second liquid crystal layer 24, a first electrode 22 and a second electrode 26 for driving the second liquid crystal layer 24 to deflect, the first electrode 22 and the second electrode 26 being located on opposite sides of the second liquid crystal layer 24; the second voltage input from the first electrode 22 and the second electrode 26 is used to switch the privacy-preserving liquid crystal cell 20 between the non-privacy-preserving state and the privacy-preserving state.
In addition, the display liquid crystal cell 10 further includes a first substrate 11 for disposing the pixel electrode 13 and the common electrode 12, and a second substrate 17 opposite to the first substrate 11, the first substrate 11 further includes a first alignment layer 14, and the second substrate 17 includes a second alignment layer 16; the first alignment layer 14 and the second alignment layer 16 have the same alignment direction. The privacy liquid crystal cell 20 further includes a third substrate 21 for disposing the first electrode 22, and a fourth substrate 27 for disposing the second electrode 26; the third substrate 21 further includes a third alignment layer 23, and the fourth substrate 27 further includes a fourth alignment layer 25; the orientation directions of the third orientation layer 23 and the fourth orientation layer 25 are perpendicular to each other; alternatively, the third alignment layer 23 and the fourth alignment layer 25 have the same alignment direction.
The second substrate 17 of the display liquid crystal cell 10 can be shared with the third substrate 21 of the peep-proof liquid crystal cell 20, so that the thickness of the display panel is reduced, and the thin design of the display panel is facilitated; of course, the second substrate 17 of the display liquid crystal cell 10 and the third substrate 21 of the privacy liquid crystal cell 20 may be two separate substrates, which is not limited in the present invention.
The display panel further includes a color film layer (not shown), which may be disposed in the display liquid crystal cell 10 or in the privacy liquid crystal cell 20. When the color film layer is disposed in the display liquid crystal cell 10, the color film layer may be disposed on a side of the first substrate 11 close to the second substrate 17, or may be disposed on a side of the second substrate 17 close to the first substrate 11; when the color film layer is disposed in the privacy protection liquid crystal cell 20, the color film layer may be disposed on a side of the third substrate 21 close to the fourth substrate 27, or may be disposed on a side of the fourth substrate 27 close to the third substrate 21.
First, the display liquid crystal cell 10 includes a plurality of sub-pixel regions, wherein each group of the pixel electrode 13 and the common electrode 12 for driving the first liquid crystal layer 15 to deflect in the display liquid crystal cell 10 corresponds to one sub-pixel region.
Second, "the plurality of sets of pixel electrodes 13 and common electrodes 12 are used for inputting the first voltage corresponding to the image to be displayed" means that: the first voltage input by the plurality of sets of pixel electrodes 13 and the common electrode 12 may cause the display panel to display an image to be displayed. When the display panel displays a white state as a whole, a user can see a display image displayed by the display panel; when the display panel displays a black state as a whole, the picture seen by the user is a black picture.
Here, the first voltage corresponding to the image to be displayed may be input from the pixel electrode 13 and the common electrode 12 of the display liquid crystal cell 10, or the voltage corresponding to the image to be displayed may be input from the pixel electrode 13 and the common electrode 12 of the display liquid crystal cell 10 and the first electrode 22 and the second electrode 26 of the privacy protection liquid crystal cell 20 in common.
Third, the type of the display liquid crystal cell 10 is not limited as long as the pixel electrode 13 and the common electrode 12 of the display liquid crystal cell 10 are located on the same side of the first liquid crystal layer 15. For example, the display liquid crystal cell 10 may be an ADvanced Super Dimension Switch (ADS) type liquid crystal cell, or an In Plane Switch (IPS) type liquid crystal cell.
The type of the privacy liquid crystal cell 20 is not limited as long as the first electrode 22 and the second electrode 26 of the privacy liquid crystal cell 20 are located on opposite sides of the second liquid crystal layer 24. For example, privacy screen cell 20 may be a Twisted Nematic (TN) type cell or a Vertical Alignment (VA) type cell.
Here, when the alignment directions of the third alignment layer 23 and the fourth alignment layer 25 in the privacy-improving liquid crystal cell 20 are perpendicular to each other, the privacy-improving liquid crystal cell 20 may be, for example, a TN-type liquid crystal cell; when the alignment directions of the third alignment layer 23 and the fourth alignment layer 25 in the privacy securing liquid crystal cell 20 are the same, the privacy securing liquid crystal cell 20 may be, for example, a VA-type liquid crystal cell.
Fourth, the pixel electrode 13 and the common electrode 12 in the liquid crystal display cell 10 may be disposed in the same layer, or in different layers and separated by an insulating layer. When the pixel electrode 13 and the common electrode 12 are arranged on the same layer, the pixel electrode 13 and the common electrode 12 are in a mutually insulated strip structure; when the pixel electrode 13 and the common electrode 12 are disposed in different layers, the pixel electrode 13 is a strip, the common electrode 12 is a plate, and the pixel electrode 13 may be disposed on a side of the common electrode 12 close to the peep-proof liquid crystal cell 20, or may be disposed on a side of the common electrode 12 away from the peep-proof liquid crystal cell 20. Fig. 1 only shows that the pixel electrode 13 is disposed on one side of the common electrode 12 close to the peep-proof liquid crystal cell 20.
Here, when the pixel electrode 13 and the common electrode 12 are disposed at the same layer, the display liquid crystal cell 10 may be, for example, an IPS type liquid crystal cell; when the pixel electrode 13 and the common electrode 12 are disposed in different layers, the display liquid crystal cell 10 may be, for example, an ADS type liquid crystal cell.
Fifth, as known to those skilled in the art, a polarizer may be disposed on each of two opposite sides of the display panel, and the polarization of the liquid crystal in the display panel is combined to determine whether the light entering the display panel can be emitted from the display panel for displaying, i.e., whether the display panel displays a black state or a white state. In the embodiment of the invention, when the display panel is applied to a display module, the display module includes the display panel, the first polarizer 31, and the second polarizer 32. The first polarizer 31 is disposed on a side of the first liquid crystal layer 15 away from the second liquid crystal layer 24, and the second polarizer 32 is disposed on a side of the second liquid crystal layer 24 away from the first liquid crystal layer 15.
For example, the first polarizer 31 may be disposed on a side of the first substrate 11 away from the second substrate 17; the second polarizer 32 may be disposed on a side of the fourth substrate 27 away from the third substrate 21. Of course, if the first and second polarizers 31 and 32 are metal wire grid polarizers, the first polarizer 31 may also be disposed between the first substrate 11 and the first liquid crystal layer 15, and the second polarizer 32 may also be disposed between the fourth substrate 27 and the second liquid crystal layer 24.
Sixthly, the polarizing axes of the first polarizer 31 and the second polarizer 32 are orthogonal; alternatively, the polarizing axes of the first polarizer 31 and the second polarizer 32 are parallel.
Seventh, since no polarizer is disposed between the display liquid crystal cell 10 and the peep-proof liquid crystal cell 20 of the display panel, light incident into the display liquid crystal cell 10 can always be incident into the peep-proof liquid crystal cell 20.
The embodiment of the invention provides a display panel, which comprises a display liquid crystal box 10 and a peep-proof liquid crystal box 20, wherein a plurality of groups of pixel electrodes 13 and common electrodes 12 in the display liquid crystal box 10 input first voltages corresponding to images to be displayed, so that the display panel displays the images to be displayed, and when the display panel integrally displays a white state, a user can see the displayed images displayed by the display panel. A second voltage is input to the first electrode 22 and the second electrode 26 of the peep-proof liquid crystal cell 20 to drive the second liquid crystal layer 24 to deflect, when the polarization direction of the light emitted from the peep-proof liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, and if the liquid crystal molecules in the second liquid crystal layer 24 are in a vertical "standing" (i.e., the long axes of the liquid crystal molecules are perpendicular to the fourth substrate) state, the light of the display image viewed by the user on the front surface of the display panel is refracted and emitted through the long axes of the liquid crystal molecules in the second liquid crystal layer 24, and the light of the display image viewed by the user on the side surface of the display panel is refracted and emitted through the short axes of the liquid crystal molecules in the second liquid crystal layer 24, and at this time, the brightness of the light refracted and emitted from the long axes of the liquid crystal molecules is greater than that of the light refracted and emitted through the short axes of the liquid crystal molecules, so that the display image displayed by the display panel can be normally viewed on the front surface of the display panel, The display image seen from the side surface of the display panel is blurred, so that the peep-proof function is realized; when the polarization direction of the light emitted from the peep-proof liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, if the liquid crystal molecules in the second liquid crystal layer 24 are horizontally "laid down" (i.e., the long axes of the liquid crystal molecules are parallel to the fourth substrate), the light of the display image viewed by the user at the front of the display panel is refracted through the short axes of the liquid crystal molecules in the second liquid crystal layer 24 and emitted, and the light of the display image viewed by the user at the side of the display panel is refracted through the long axes of the liquid crystal molecules in the second liquid crystal layer 24 and emitted, at this time, the brightness difference between the light emitted from the long axes and the short axes of the liquid crystal molecules is small, so that the user can normally view the display image displayed by the display panel at both the front and the side of the display panel, thereby implementing the peep-proof function. Compared with the prior art, the preparation process is simple, and the cost is saved.
Here, in the case of realizing the peep-proof function, "the brightness of light refracted and emitted from the long axes of the liquid crystal molecules is greater than that of light refracted and emitted through the short axes of the liquid crystal molecules" is because: the polarization state of the light emitted from the long axes of the liquid crystal molecules viewed from the front of the display panel is the same as the polarization state of the second polarizer 32, and thus, the light refracted by the long axes of the liquid crystal molecules can be entirely emitted from the second polarizer 32; while the polarization state of the light emitted from the short axis of the liquid crystal molecules viewed from the side of the display panel is different from the polarization state of the second polarizer 32, and Δ n (the difference between the refractive indexes of the long axis and the short axis of the liquid crystal molecules) at this time is the smallest, and Δ nd is the smallest when the thickness d of the second liquid crystal layer 24 is the same, those skilled in the art know that the transmittance of the display panel is in a sine function relationship with Δ nd, and therefore, when Δ nd is the smallest, the transmittance of the display panel is the smallest, and only a small portion of the light is emitted.
When the non-peeping prevention function is realized, the "small difference in luminance between light emitted from the major axis and the minor axis of the liquid crystal molecules" is because: the polarization state of the light emitted from the minor axes of the liquid crystal molecules viewed from the front of the display panel is the same as the polarization state of the second polarizer 32, and thus, the light refracted through the minor axes of the liquid crystal molecules may be entirely emitted from the second polarizer 32; although the polarization state of the light emitted from the major axis of the liquid crystal molecules viewed from the side of the display panel is different from the polarization state of the second polarizer 32, Δ n at this time is the maximum, and Δ nd is the maximum and the transmittance of the display panel is the maximum when the thickness d of the second liquid crystal layer 24 is the same, so that the luminance of the light viewed from the side of the display panel is also large.
Specifically, when different types of liquid crystal cells are used for the display liquid crystal cell 10 and the peep-proof liquid crystal cell 20, and the polarization axis relationship between the first polarizer 31 and the second polarizer 32 is different, the specific processes for implementing peep-proof and peep-proof of the display panel are different. By way of example, the following can be distinguished:
in the first case, the polarization axes of the first polarizer 31 and the second polarizer 32 are perpendicular to each other, the display liquid crystal cell 10 is an ADS type liquid crystal cell, the peep-proof liquid crystal cell 20 is a TN type liquid crystal cell, and the polarization state of light incident into the display liquid crystal cell 10 is not changed when the first voltage is 0; then, the light emitted from the display liquid crystal cell 10 enters the peep-proof liquid crystal cell 20, when the second voltage is 0, the liquid crystal molecules in the second liquid crystal 24 are in a horizontal "lying" state, the polarization state of the light emitted into the peep-proof liquid crystal cell 20 is changed, the polarization direction of the light emitted from the peep-proof liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, the light can be emitted from the peep-proof liquid crystal cell 20 to display an image, and since the liquid crystal molecules in the second liquid crystal 24 in the peep-proof liquid crystal cell 20 are in a horizontal "lying" state, the peep-proof function can be realized.
Here, for the display liquid crystal cell 10, the pixel electrode 13 and the common electrode 12 input a first voltage, and since the first voltage input by the pixel electrode 13 and the common electrode 12 corresponds to an image to be displayed, the pixel electrode 13 and the common electrode 12 may provide a signal to input the image to be displayed. If the potentials of the pixel electrode 13 and the common electrode 12 are the same, the value of the first voltage is 0, the pixel electrode 13 and the common electrode 12 cannot drive the first liquid crystal layer 15 to deflect, and the polarization state of light entering the display liquid crystal box 10 is not changed; if the potentials of the pixel electrode 13 and the common electrode 12 are different, the value of the first voltage is not 0, and the pixel electrode 13 and the common electrode 12 can drive the first liquid crystal layer 15 to deflect, so that the polarization state of light entering the display liquid crystal cell 10 is changed.
For the peep-proof liquid crystal cell 20, the first electrode 22 and the second electrode 26 input a second voltage, and at this time, the second voltage may or may not correspond to an image to be displayed. For example, the second voltage does not correspond to an image to be displayed, the first electrode 22 and the second electrode 26 do not need to provide a signal of the image to be displayed, and if the potentials of the first electrode 22 and the second electrode 26 are the same, the value of the second voltage is 0; if the potentials of the first electrode 22 and the second electrode 26 are different, the value of the second voltage is not 0.
The operation of the liquid crystal cell 10 and the peep-proof liquid crystal cell 20 is shown above, and will not be described in detail later.
In the second case, the polarization axes of the first polarizer 31 and the second polarizer 32 are perpendicular to each other, the display liquid crystal cell 10 is an ADS type liquid crystal cell, the peep-proof liquid crystal cell 20 is a TN type liquid crystal cell, and when the value of the first voltage is not 0, the polarization state of light incident into the display liquid crystal cell 10 is changed; then, the light emitted from the display liquid crystal cell 10 enters the peep prevention liquid crystal cell 20, when the second voltage is not 0, the liquid crystal molecules in the second liquid crystal 24 are in a vertical "standing" state, the polarization state of the light emitted into the peep prevention liquid crystal cell 20 is not changed, the polarization direction of the light emitted from the peep prevention liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, the light can be emitted from the peep prevention liquid crystal cell 20 and an image is displayed, and the peep prevention function can be realized because the liquid crystal molecules in the second liquid crystal 24 in the peep prevention liquid crystal cell 20 are in the vertical "standing" state.
In the third case, the polarization axes of the first polarizer 31 and the second polarizer 32 are perpendicular to each other, the display liquid crystal cell 10 is an ADS type liquid crystal cell, the peep-proof liquid crystal cell 20 is a VA type liquid crystal cell, and the polarization state of light incident into the display liquid crystal cell 10 is not changed when the first voltage value is 0; then, the light emitted from the display liquid crystal cell 10 enters the peep prevention liquid crystal cell 20, when the second voltage is not 0, the liquid crystal molecules in the second liquid crystal 24 are in a horizontal "lying" state, the polarization state of the light entering the peep prevention liquid crystal cell 20 is changed, the polarization direction of the light emitted from the peep prevention liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, the light can be emitted from the peep prevention liquid crystal cell 20 and an image is displayed, and since the liquid crystal molecules in the second liquid crystal 24 in the peep prevention liquid crystal cell 20 are in a horizontal "lying" state, the peep prevention function can be realized.
In the fourth case, the polarization axes of the first polarizer 31 and the second polarizer 32 are perpendicular to each other, the display liquid crystal cell 10 is an ADS type liquid crystal cell, the peep-proof liquid crystal cell 20 is a VA type liquid crystal cell, and the polarization state of light incident into the display liquid crystal cell 10 is changed when the value of the first voltage is not 0; then, the light emitted from the display liquid crystal cell 10 enters the peep prevention liquid crystal cell 20, when the second voltage is 0, the liquid crystal molecules in the second liquid crystal 24 are in a vertical "standing" state, the polarization state of the light emitted into the peep prevention liquid crystal cell 20 is not changed, the polarization direction of the light emitted from the peep prevention liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, the light can be emitted from the peep prevention liquid crystal cell 20 to display an image, and the peep prevention function can be realized because the liquid crystal molecules in the second liquid crystal 24 in the peep prevention liquid crystal cell 20 are in the vertical "standing" state.
In the fifth case, the polarization axes of the first polarizer 31 and the second polarizer 32 are parallel, the display liquid crystal cell 10 is an ADS type liquid crystal cell, the peep-proof liquid crystal cell 20 is a TN type liquid crystal cell, and when the value of the first voltage is not 0, the polarization state of light incident into the display liquid crystal cell 10 is changed; then, the light emitted from the display liquid crystal cell 10 enters the peep-proof liquid crystal cell 20, when the second voltage is 0, the liquid crystal molecules in the second liquid crystal 24 are in a horizontal "lying" state, the polarization state of the light emitted into the peep-proof liquid crystal cell 20 is changed, the polarization direction of the light emitted from the peep-proof liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, the light can be emitted from the peep-proof liquid crystal cell 20 to display an image, and since the liquid crystal molecules in the second liquid crystal 24 in the peep-proof liquid crystal cell 20 are in a horizontal "lying" state, the peep-proof function can be realized.
In the sixth case, the polarization axes of the first polarizer 31 and the second polarizer 32 are parallel, the display liquid crystal cell 10 is an ADS type liquid crystal cell, the peep-proof liquid crystal cell 20 is a TN type liquid crystal cell, and the polarization state of light incident into the display liquid crystal cell 10 is not changed when the first voltage value is 0; then, the light emitted from the display liquid crystal cell 10 enters the peep prevention liquid crystal cell 20, when the second voltage is not 0, the liquid crystal molecules in the second liquid crystal 24 are in a vertical "standing" state, the polarization state of the light emitted into the peep prevention liquid crystal cell 20 is not changed, the polarization direction of the light emitted from the peep prevention liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, the light can be emitted from the peep prevention liquid crystal cell 20 and an image is displayed, and the peep prevention function can be realized because the liquid crystal molecules in the second liquid crystal 24 in the peep prevention liquid crystal cell 20 are in the vertical "standing" state.
In the seventh case, the polarization axes of the first polarizer 31 and the second polarizer 32 are parallel, the display liquid crystal cell 10 is an ADS type liquid crystal cell, the peep-proof liquid crystal cell 20 is a VA type liquid crystal cell, and the polarization state of the light incident into the display liquid crystal cell 10 is not changed when the first voltage value is 0; then, the light emitted from the display liquid crystal cell 10 enters the peep prevention liquid crystal cell 20, when the second voltage is 0, the liquid crystal molecules in the second liquid crystal 24 are in a vertical "standing" state, the polarization state of the light emitted into the peep prevention liquid crystal cell 20 is not changed, the polarization direction of the light emitted from the peep prevention liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, the light can be emitted from the peep prevention liquid crystal cell 20 to display an image, and the peep prevention function can be realized because the liquid crystal molecules in the second liquid crystal 24 in the peep prevention liquid crystal cell 20 are in the vertical "standing" state.
In the eighth case, the polarization axes of the first polarizer 31 and the second polarizer 32 are parallel, the display liquid crystal cell 10 is an ADS type liquid crystal cell, the peep-proof liquid crystal cell 20 is a VA type liquid crystal cell, and when the value of the first voltage is not 0, the polarization state of light incident into the display liquid crystal cell 10 is changed; then, the light emitted from the display liquid crystal cell 10 enters the peep prevention liquid crystal cell 20, when the second voltage is not 0, the liquid crystal molecules in the second liquid crystal 24 are in a horizontal "lying" state, the polarization state of the light entering the peep prevention liquid crystal cell 20 is changed, the polarization direction of the light emitted from the peep prevention liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, the light can be emitted from the peep prevention liquid crystal cell 20 and an image is displayed, and since the liquid crystal molecules in the second liquid crystal 24 in the peep prevention liquid crystal cell 20 are in a horizontal "lying" state, the peep prevention function can be realized.
Of course, the display cell 10 may also be an IPS mode cell, which is not described in detail herein.
An embodiment of the invention provides a display module, as shown in fig. 1, including the display panel described in any of the foregoing embodiments, and a first polarizer 31 and a second polarizer 32.
The first polarizer 31 is disposed on a side of the first liquid crystal layer 15 away from the second liquid crystal layer 24, and the second polarizer 32 is disposed on a side of the second liquid crystal layer 24 away from the first liquid crystal layer 15.
For example, the first polarizer 31 may be disposed on a side of the first substrate 11 away from the second substrate 17; the second polarizer 32 may be disposed on a side of the fourth substrate 27 away from the third substrate 21. Of course, if the first and second polarizers 31 and 32 are metal wire grid polarizers, the first polarizer 31 may also be disposed between the first substrate 11 and the first liquid crystal layer 15, and the second polarizer 32 may also be disposed between the fourth substrate 27 and the second liquid crystal layer 24.
It should be noted that the polarization axes of the first polarizer 31 and the second polarizer 32 are perpendicular to each other; alternatively, the polarizing axes of the first polarizer 31 and the second polarizer 32 are parallel.
The embodiment of the invention provides a display assembly, which comprises a display panel, a first polarizer 31 and a second polarizer 32, wherein the display panel comprises a display liquid crystal box 10 and a peep-proof liquid crystal box 20, a plurality of groups of pixel electrodes 13 and a common electrode 12 in the display liquid crystal box 10 input first voltages corresponding to images to be displayed, so that the display assembly displays the images to be displayed, and when the display assembly integrally displays a white state, a user can see the displayed images displayed by the display assembly. A second voltage is input to the first electrode 22 and the second electrode 26 of the peep-proof liquid crystal cell 20 to drive the second liquid crystal layer 24 to deflect, when the polarization direction of the light emitted from the peep-proof liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, and if the liquid crystal molecules in the second liquid crystal layer 24 are in a vertical "standing" (i.e., the long axes of the liquid crystal molecules are perpendicular to the fourth substrate) state, the light of the display image viewed by the user at the front side of the display device is refracted and emitted through the long axes of the liquid crystal molecules in the second liquid crystal layer 24, and the light of the display image viewed by the user at the side of the display device is refracted and emitted through the short axes of the liquid crystal molecules in the second liquid crystal layer 24, and at this time, the brightness of the light refracted and emitted through the long axes of the liquid crystal molecules is greater than that of the light, so that the display image displayed by the display device can be normally viewed at the front side of the display device, The display image seen from the side surface of the display component is blurred, so that the peep-proof function is realized; when the polarization direction of the light emitted from the peep-proof liquid crystal cell 20 is the same as the polarization direction of the second polarizer 32, if the liquid crystal molecules in the second liquid crystal layer 24 are horizontally "laid down" (i.e., the long axes of the liquid crystal molecules are parallel to the fourth substrate), the light of the display image viewed by the user at the front of the display module is refracted and emitted through the short axes of the liquid crystal molecules in the second liquid crystal layer 24, and the light of the display image viewed by the user at the side of the display module is refracted and emitted through the long axes of the liquid crystal molecules in the second liquid crystal layer 24, at this time, the brightness difference between the light emitted from the long axes and the short axes of the liquid crystal molecules is small, so that the user can normally view the display image displayed by the display module at both the front and the side of the display module, thereby implementing the peep-proof function. Compared with the prior art, the preparation process is simple, and the cost is saved.
Here, in the case of realizing the peep-proof function, "the brightness of light refracted and emitted from the long axes of the liquid crystal molecules is greater than that of light refracted and emitted through the short axes of the liquid crystal molecules" is because: the polarization state of the light emitted from the long axes of the liquid crystal molecules viewed from the front of the display module is the same as the polarization state of the second polarizer 32, and thus, the light refracted by the long axes of the liquid crystal molecules may be entirely emitted from the second polarizer 32; while the polarization state of the light emitted from the short axis of the liquid crystal molecules viewed from the side of the display module is different from the polarization state of the second polarizer 32, and Δ n (the difference between the refractive indexes of the long axis and the short axis of the liquid crystal molecules) at this time is the smallest, and Δ nd is the smallest when the thickness d of the second liquid crystal layer 24 is the same, those skilled in the art know that the transmittance of the display module is in a sine function relationship with Δ nd, and therefore, when Δ nd is the smallest, the transmittance of the display module is the smallest, and only a small portion of the light is emitted.
When the non-peeping prevention function is realized, the "small difference in luminance between light emitted from the major axis and the minor axis of the liquid crystal molecules" is because: the polarization state of the light emitted from the minor axes of the liquid crystal molecules viewed from the front of the display module is the same as the polarization state of the second polarizer 32, and thus, the light refracted through the minor axes of the liquid crystal molecules may be entirely emitted from the second polarizer 32; although the polarization state of light emitted from the major axis of the liquid crystal molecules viewed from the side of the display module is different from the polarization state of the second polarizer 32, Δ n at this time is the maximum, and Δ nd is the maximum and the transmittance of the display module is the maximum when the thickness d of the second liquid crystal layer 24 is the same, so that the luminance of light viewed from the side of the display module is also large.
An embodiment of the present invention provides a display device, including the display module according to any one of the foregoing embodiments.
The display device may be a display panel, or may be a display including a display panel.
Embodiments of the present invention provide a display device having the same technical effects as those of the display module described above, and are not described herein again.
An embodiment of the present invention provides a peeping prevention method for a display device according to any one of the foregoing embodiments, including: inputting a first voltage corresponding to an image to be displayed by a pixel electrode 13 and a common electrode 12 of a display liquid crystal box 10; the first electrode 22 and the second electrode 26 of the privacy protection liquid crystal cell 20 are input with a second voltage, so that the privacy protection liquid crystal cell 20 is switched between a non-privacy protection state and a privacy protection state.
Here, the first voltage may control whether the first liquid crystal layer 15 is deflected or not to change the polarization state of light incident to the display liquid crystal cell 10; the second voltage can control whether the second liquid crystal layer 24 deflects to change the polarization state of the light entering the peep-proof liquid crystal cell 20, so that the display panel can realize a non-peep-proof or peep-proof function on the basis of displaying a picture normally.
In addition, the display liquid crystal cell 10 further includes a first substrate 11 for disposing the pixel electrode 13 and the common electrode 12, and a second substrate 17 opposite to the first substrate 11, the first substrate 11 further includes a first alignment layer 14, and the second substrate 17 includes a second alignment layer 16; the first alignment layer 14 and the second alignment layer 16 have the same alignment direction. The privacy liquid crystal cell 20 further includes a third substrate 21 for disposing the first electrode 22, and a fourth substrate 27 for disposing the second electrode 26; the third substrate 21 further includes a third alignment layer 23, and the fourth substrate 27 further includes a fourth alignment layer 25; the orientation directions of the third orientation layer 23 and the fourth orientation layer 25 are perpendicular to each other; alternatively, the third alignment layer 23 and the fourth alignment layer 25 have the same alignment direction.
The second substrate 17 of the display liquid crystal cell 10 can be shared with the third substrate 21 of the peep-proof liquid crystal cell 20, so that the thickness of the display panel is reduced, and the thin design of the display panel is facilitated; of course, the second substrate 17 of the display liquid crystal cell 10 and the third substrate 21 of the privacy liquid crystal cell 20 may be two separate substrates, which is not limited in the present invention.
The display panel further includes a color film layer (not shown), which may be disposed in the display liquid crystal cell 10 or in the privacy liquid crystal cell 20. When the color film layer is disposed in the display liquid crystal cell 10, the color film layer may be disposed on a side of the first substrate 11 close to the second substrate 17, or may be disposed on a side of the second substrate 17 close to the first substrate 11; when the color film layer is disposed in the privacy protection liquid crystal cell 20, the color film layer may be disposed on a side of the third substrate 21 close to the fourth substrate 27, or may be disposed on a side of the fourth substrate 27 close to the third substrate 21.
First, the type of the display liquid crystal cell 10 is not limited as long as the pixel electrode 13 and the common electrode 12 of the display liquid crystal cell 10 are located on the same side of the first liquid crystal layer 15. For example, display liquid crystal cell 10 may be an advanced super-dimensional field switching ADS type liquid crystal cell, or an IPS type liquid crystal cell.
The type of the privacy liquid crystal cell 20 is not limited as long as the first electrode 22 and the second electrode 26 of the privacy liquid crystal cell 20 are located on opposite sides of the second liquid crystal layer 24. For example, privacy screen liquid crystal cell 20 may be a TN-type liquid crystal cell, or a vertically aligned VA-type liquid crystal cell.
Here, when the alignment directions of the third alignment layer 23 and the fourth alignment layer 25 in the privacy-improving liquid crystal cell 20 are perpendicular to each other, the privacy-improving liquid crystal cell 20 may be, for example, a TN-type liquid crystal cell; when the alignment directions of the third alignment layer 23 and the fourth alignment layer 25 in the privacy securing liquid crystal cell 20 are the same, the privacy securing liquid crystal cell 20 may be, for example, a VA-type liquid crystal cell.
Second, since no polarizer is disposed between the display liquid crystal cell 10 and the peep-proof liquid crystal cell 20 of the display panel, light incident into the display liquid crystal cell 10 can always be incident into the peep-proof liquid crystal cell 20.
Embodiments of the present invention provide a peep-proof method for a display device according to any one of the foregoing embodiments, which has the same technical effects as the foregoing display assembly, and is not described herein again.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A display panel, comprising: the display liquid crystal box and the peep-proof liquid crystal box are sequentially arranged towards the display side of the display panel;
the display liquid crystal cell includes: the liquid crystal display panel comprises a first liquid crystal layer, a plurality of groups of pixel electrodes and a common electrode, wherein the pixel electrodes and the common electrode are used for driving the first liquid crystal layer to deflect; the pixel electrodes and the common electrodes are used for inputting first voltages corresponding to images to be displayed;
the peep-proof liquid crystal box comprises: the liquid crystal display comprises a second liquid crystal layer, a first electrode and a second electrode, wherein the first electrode and the second electrode are used for driving the second liquid crystal layer to deflect; a second voltage input by the first electrode and the second electrode is used for switching the peep-proof liquid crystal box between a non-peep-proof state and a peep-proof state;
the peep-proof liquid crystal box further comprises a third substrate for arranging the first electrode and a fourth substrate for arranging the second electrode;
the third substrate further comprises a third alignment layer, and the fourth substrate further comprises a fourth alignment layer;
the alignment directions of the third alignment layer and the fourth alignment layer are mutually vertical, and the peep-proof liquid crystal box is a TN (twisted nematic) liquid crystal box; alternatively, the first and second electrodes may be,
the third alignment layer and the fourth alignment layer have the same alignment direction, and the peep-proof liquid crystal box is a VA liquid crystal box.
2. The display panel according to claim 1, wherein the display liquid crystal cell further comprises a first substrate for disposing the pixel electrode and the common electrode, and a second substrate opposite to the first substrate;
the first substrate further comprises a first alignment layer, and the second substrate comprises a second alignment layer; the orientation directions of the first orientation layer and the second orientation layer are the same.
3. The display panel according to claim 2,
the display liquid crystal cell is an ADS liquid crystal cell or an IPS liquid crystal cell.
4. The display panel according to claim 2, wherein the second substrate is common to the third substrate.
5. The display panel of claim 1, further comprising a color film layer disposed in the display liquid crystal cell or disposed in the privacy liquid crystal cell.
6. A display module comprising the display panel according to any one of claims 1 to 5, and a first polarizing plate and a second polarizing plate;
the first polaroid is arranged on one side, away from the second liquid crystal layer, of the first liquid crystal layer, and the second polaroid is arranged on one side, away from the first liquid crystal layer, of the second liquid crystal layer.
7. The display module of claim 6, wherein the polarizing axes of the first polarizer and the second polarizer are orthogonal; or the polarizing axes of the first polarizer and the second polarizer are parallel.
8. A display device comprising a display assembly according to claim 6 or 7.
9. A method of privacy protection for a display device as claimed in claim 8, comprising:
inputting a first voltage corresponding to an image to be displayed by a pixel electrode and a common electrode of a display liquid crystal box;
and inputting a second voltage to the first electrode and the second electrode of the peep-proof liquid crystal box, so that the peep-proof liquid crystal box is switched between a non-peep-proof state and a peep-proof state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810241858.5A CN108363250B (en) | 2018-03-22 | 2018-03-22 | Display panel, display assembly, display device and peep-proof method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810241858.5A CN108363250B (en) | 2018-03-22 | 2018-03-22 | Display panel, display assembly, display device and peep-proof method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108363250A CN108363250A (en) | 2018-08-03 |
| CN108363250B true CN108363250B (en) | 2022-01-11 |
Family
ID=63001224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810241858.5A Active CN108363250B (en) | 2018-03-22 | 2018-03-22 | Display panel, display assembly, display device and peep-proof method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108363250B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143442A (en) * | 2018-09-14 | 2019-01-04 | 京东方科技集团股份有限公司 | A kind of polaroid, display module and display device |
| CN109407391B (en) * | 2018-12-25 | 2020-12-08 | 深圳市华星光电半导体显示技术有限公司 | Transparent liquid crystal display device |
| CN110286533B (en) * | 2019-05-31 | 2021-11-19 | 上海天马微电子有限公司 | Display device |
| CN110349509A (en) * | 2019-06-21 | 2019-10-18 | 深圳市华星光电技术有限公司 | Changeable peep-proof display device |
| US11874552B2 (en) | 2019-11-29 | 2024-01-16 | Boe Technology Group Co., Ltd. | Display device and manufacturing method thereof |
| CN111261687B (en) * | 2020-02-05 | 2023-01-31 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
| CN111240077A (en) * | 2020-02-25 | 2020-06-05 | 深圳市隆利科技股份有限公司 | Peep-proof display method |
| CN111190296A (en) * | 2020-02-25 | 2020-05-22 | 深圳市隆利科技股份有限公司 | Peep-proof method for display |
| CN111766975A (en) * | 2020-06-12 | 2020-10-13 | 惠州市华星光电技术有限公司 | Touch panel and touch display device |
| CN113671734A (en) * | 2021-08-06 | 2021-11-19 | Tcl华星光电技术有限公司 | Display device and driving method of peep-proof state switching diaphragm thereof |
| 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 |
| CN114355653B (en) * | 2021-12-29 | 2024-02-23 | 厦门天马微电子有限公司 | Display panel, display device, and display device control method |
| CN114326178A (en) * | 2021-12-30 | 2022-04-12 | Oppo广东移动通信有限公司 | Liquid crystal display device, display screen, electronic equipment and control method |
| CN114442344B (en) | 2021-12-31 | 2023-10-24 | 上海中航光电子有限公司 | Visual angle switchable display module and vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4163430B2 (en) * | 2002-03-19 | 2008-10-08 | 株式会社リコー | Reflective liquid crystal element and method for manufacturing the same |
| JP4285350B2 (en) * | 2004-02-26 | 2009-06-24 | セイコーエプソン株式会社 | Viewing angle control element and manufacturing method thereof, liquid crystal display device, electronic device |
| KR101147127B1 (en) * | 2005-10-13 | 2012-05-25 | 엘지디스플레이 주식회사 | Liquid Crystal Display Device And Dribing Method Thereof |
| JP4807774B2 (en) * | 2005-10-20 | 2011-11-02 | 日東電工株式会社 | Liquid crystal panel and liquid crystal display device |
| CN103792742A (en) * | 2014-01-23 | 2014-05-14 | 京东方科技集团股份有限公司 | Liquid crystal display device |
| CN107037618A (en) * | 2017-04-29 | 2017-08-11 | 昆山龙腾光电有限公司 | The controllable liquid crystal display device in width visual angle |
-
2018
- 2018-03-22 CN CN201810241858.5A patent/CN108363250B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108363250A (en) | 2018-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108363250B (en) | Display panel, display assembly, display device and peep-proof method thereof | |
| TWI480640B (en) | Liquid crystal display device | |
| CN101738792B (en) | Display device, method for driving display device and electronic device | |
| US8884922B2 (en) | Display device including touch panel and parallax barrier sharing single board | |
| US6466290B2 (en) | Fringe field switching mode LCD | |
| CN107466376B (en) | Liquid crystal display device with switchable viewing angle and viewing angle switching method | |
| KR20190016591A (en) | Liquid crystal display device capable of switching the viewing angle and method for switching the viewing angle | |
| JP2005266215A (en) | Liquid crystal display device and resistance detection type touch panel | |
| KR20140042716A (en) | Display device and electronic equipment | |
| JP2000029072A (en) | Liquid crystal display device with high aperture rate and high transmissivity | |
| KR101157975B1 (en) | Method For Driving Liquid Crystal Display Device | |
| CN101916014A (en) | Liquid crystal display panel capable of adjusting viewing angles | |
| JP2007010870A (en) | Liquid crystal display element | |
| CN101726934A (en) | Horizontal electric field type liquid crystal display device | |
| CN100485477C (en) | Liquid crystal display device and electronic apparatus | |
| JP2002182228A (en) | Liquid crystal display device and electronic equipment | |
| JP4540074B2 (en) | Liquid crystal display | |
| US20190258123A1 (en) | Display panel, display apparatus and driving method thereof | |
| CN111679461B (en) | Display device with switchable field of view and display method thereof | |
| US6657693B1 (en) | Liquid crystal display | |
| JP2010256680A (en) | Liquid crystal display element | |
| US8203671B2 (en) | View angle controllable display device and terminal having the same | |
| CN113917721B (en) | Display panel with switchable wide and narrow viewing angles, driving method and display device | |
| US10739625B2 (en) | Display device | |
| US20140055684A1 (en) | Liquid crystal display apparatus and liquid crystal projector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |