CN111679461B - Display device with switchable field of view and display method thereof - Google Patents
Display device with switchable field of view and display method thereof Download PDFInfo
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- CN111679461B CN111679461B CN202010506728.7A CN202010506728A CN111679461B CN 111679461 B CN111679461 B CN 111679461B CN 202010506728 A CN202010506728 A CN 202010506728A CN 111679461 B CN111679461 B CN 111679461B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1323—Arrangements for providing a switchable viewing angle
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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Abstract
A display device with switchable visual fields comprises a visual field controller, a liquid crystal display and a prism pattern microstructure, wherein the visual field controller comprises a first substrate, a second substrate and a first liquid crystal layer, the first substrate is provided with a bias voltage electrode, and the second substrate is provided with a pixel electrode and a common electrode; the liquid crystal display is arranged on the light incidence side of the view field controller and comprises a plurality of pixels, each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, and the first sub-pixel, the second sub-pixel and the third sub-pixel respectively comprise a first view field pixel and a second view field pixel; the prism pattern microstructure is arranged on the light incidence side of the liquid crystal display and comprises a plurality of first prism structures and a plurality of second prism structures, each first prism structure is used for dividing light into first field of view light, and each second prism structure is used for dividing light into second field of view light. The invention also relates to a display method with switchable field of view.
Description
Technical Field
The invention relates to the technical field of displays, in particular to a display device with switchable visual fields and a display method thereof.
Background
The dual view display technique is a technique of simultaneously displaying two display screens on one display screen. Through setting up the slit grating, the user can only see the even pixel row of the display panel that illuminates behind the slit grating by the backlight when watching the demonstration in the left side of display panel, when watching the demonstration in the right side, can only see the odd pixel row of the display panel that illuminates behind the slit grating by the backlight, consequently as long as the even pixel row of display panel shows first image, the odd pixel row shows the second image, alright be located the viewer of display module assembly left and right both sides see different images, realize the effect of two-sided demonstration. However, the existing display can only realize single double-view display, and can not realize free switching between the full view field and the double view field.
Disclosure of Invention
In view of this, the present invention provides a display device with switchable viewing fields, which can switch between dual viewing fields, a full viewing field and a peep-proof viewing field.
A switchable field of view display device comprising:
the visual field controller comprises a first substrate, a second substrate and a first liquid crystal layer, wherein the first substrate and the second substrate are arranged oppositely, the first liquid crystal layer is arranged between the first substrate and the second substrate, a bias voltage electrode is arranged on the first substrate, and a pixel electrode and a common electrode are arranged on the second substrate;
the liquid crystal display is arranged on the light incidence side of the view field controller and comprises a plurality of pixels which are arranged in a matrix manner, each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, and the first sub-pixel, the second sub-pixel and the third sub-pixel respectively comprise a first view field pixel and a second view field pixel; and
the prism pattern microstructure is arranged on the light incident side of the liquid crystal display and comprises a plurality of first prism structures and a plurality of second prism structures, each first prism structure is used for dividing light incident to the liquid crystal display into first view field light, each second prism structure is used for dividing light incident to the liquid crystal display into second view field light, the first prism structures are arranged corresponding to the first view field pixels, and the second prism structures are arranged corresponding to the second view field pixels;
the display device realizes the switching among the double view field, the full view field and the peep-proof view field by controlling the voltage between the first substrate and the second substrate and the video signals given to the first sub-pixel, the second sub-pixel and the third sub-pixel.
Preferably, the field controller further includes a first polarizing plate disposed on the first substrate, the liquid crystal display further includes a second polarizing plate disposed on the light-emitting side of the liquid crystal display, and a third polarizing plate disposed on the light-entering side of the liquid crystal display, an absorption axis of the first polarizing plate is orthogonal to an absorption axis of the second polarizing plate, and an absorption axis of the second polarizing plate is orthogonal to an absorption axis of the third polarizing plate.
Preferably, a first alignment film is disposed on a side of the first substrate close to the first liquid crystal layer, a second alignment film is disposed on a side of the second substrate close to the first liquid crystal layer, an alignment direction of the first alignment film is parallel to and opposite to an alignment direction of the second alignment film, and an initial pretilt angle of liquid crystal molecules of the first liquid crystal layer is 1 ° to 10 °.
Preferably, the second substrate is further provided with a spacer layer, the common electrode is disposed on the surface of the second substrate, the spacer layer covers the common electrode, and the pixel electrode is disposed on the spacer layer.
Preferably, the pixel electrode includes a plurality of first main lines and a plurality of first branch lines, one end of each of the first branch lines is electrically connected to the first main line, each of the first branch lines is disposed at an interval along a length direction of the first main line, a plurality of first electrode strips and a plurality of second electrode strips are connected to each of the first branch lines, each of the first electrode strips is connected to one side of the first branch line, and each of the second electrode strips is connected to the other side of the first branch line.
Preferably, the common electrode includes a plurality of second main lines and a plurality of second branch lines, one end of each second branch line is electrically connected to the second main line, each second branch line is disposed at intervals along the length direction of the second main line, each second branch line is connected to a plurality of third electrode strips and a plurality of fourth electrode strips, each third electrode strip is connected to one side of the second branch line, each fourth electrode strip is connected to the other side of the second branch line, an orthographic projection of each first electrode strip on the second substrate is staggered with the third electrode strip, and an orthographic projection of each second electrode strip on the second substrate is staggered with the fourth electrode strip.
Preferably, the second substrate is further provided with a first metal mesh for reducing the resistance of the pixel electrode and a second metal mesh for reducing the resistance of the common electrode, the first metal mesh is electrically connected to the pixel electrode, and the second metal mesh is electrically connected to the common electrode.
Preferably, an insulating layer is further disposed on the first substrate, the bias electrode is disposed on the surface of the first substrate, and the insulating layer covers the bias electrode.
Preferably, when the display device performs dual-field display, a bias voltage is generated between the first substrate and the second substrate, the first field pixels are endowed with first video signals, and the second field pixels are endowed with second video signals;
when the display device carries out full-field display, the voltage of the bias electrode and the common electrode is 0, the pixel electrode outputs pixel voltage for driving liquid crystal molecules to deflect, and the same video signals are given to the first field-of-view pixel and the second field-of-view pixel;
when the display device performs peep-proof visual field display, a bias voltage is generated between the first substrate and the second substrate, the first visual field pixels give a voltage of a black picture, and the second visual field pixels give a video signal; or, a bias voltage is generated between the first substrate and the second substrate, the first viewing field pixel gives a video signal, and the second viewing field pixel gives a voltage of a black picture.
The embodiment of the invention also discloses a display method with switchable field of view, which utilizes the display device with switchable field of view, and comprises the following steps:
controlling a bias voltage generated between the first substrate and the second substrate, giving a first video signal to the first view field pixel and giving a second video signal to the second view field pixel, and carrying out double-view display by the display device;
controlling the voltage of the bias electrode and the common electrode to be 0, controlling the pixel electrode to output a pixel voltage for driving liquid crystal molecules to deflect, and endowing the same video signals for the first view field pixel and the second view field pixel, wherein the display device carries out full view field display;
controlling a bias voltage generated between the first substrate and the second substrate, giving a voltage of a black picture to the first view field pixel, giving a video signal to the second view field pixel, and carrying out peep-proof view field display by the display device; or controlling the first substrate and the second substrate to generate bias voltage, wherein the first visual field pixel gives a video signal, and the second visual field pixel gives a voltage of a black picture.
The display device with switchable visual fields can realize switching between double visual fields, a full visual field and an anti-peeping visual field; when the display device performs double-view field display, the driver and the copilot can respectively select favorite display contents; when the display device performs full-field display, the driver and the copilot can watch the same display picture; when the display device displays the peep-proof view field, the left display content is peep-proof display for the driver, namely the driver cannot watch the picture, and only the right view field is normally displayed for the copilot to watch.
Drawings
Fig. 1 is a schematic sectional view of a field-of-view switchable display device of the present invention.
Fig. 2 is a schematic diagram of a field-of-view switchable display device of the present invention for dual field-of-view display.
Fig. 3 is a schematic diagram of a field-of-view switchable display device of the present invention for full field display.
Fig. 4 is a schematic diagram of a privacy view display of the switchable field of view display device of the present invention.
Fig. 5 is a partial structural schematic diagram of a pixel electrode and a common electrode in a display device with switchable field of view according to the present invention.
Fig. 6 is a schematic view of a partial structure of a prism pattern microstructure and a pixel in a field-switchable display device according to the present invention.
Fig. 7 is a schematic diagram showing brightness simulation of a dual-field and full-field display of the field-of-view switchable display device of the present invention.
Fig. 8 is a schematic diagram of luminance simulation of a display device with switchable viewing fields according to the present invention for performing a peep-proof viewing field display.
Fig. 9 is a control signal transmission diagram of the field-of-view switchable display device of the present invention.
Detailed Description
Fig. 1 is a schematic cross-sectional structure diagram of a switchable viewing field display device of the present invention, fig. 2 is a schematic diagram of a switchable viewing field display device of the present invention for performing a dual viewing field display, fig. 3 is a schematic diagram of a switchable viewing field display device of the present invention for performing a full viewing field display, and fig. 4 is a schematic diagram of a switchable viewing field display device of the present invention for performing a peep-proof viewing field display, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the switchable viewing field display device includes a viewing field controller 10, a liquid crystal display 20 and a prism pattern microstructure 30.
The visual field controller 10 comprises a first substrate 11, a second substrate 12 and a first liquid crystal layer 13, wherein the first substrate 11 and the second substrate 12 are arranged oppositely, the first liquid crystal layer 13 is arranged between the first substrate 11 and the second substrate 12, the first substrate 11 is provided with a bias electrode 14, and the second substrate 12 is provided with a pixel electrode 16 and a common electrode 17;
the liquid crystal display 20 includes a plurality of pixels arranged in a matrix, each of the pixels includes a first sub-pixel 101, a second sub-pixel 102, and a third sub-pixel 103, and the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 include a first field-of-view pixel and a second field-of-view pixel, respectively.
Specifically, the first sub-pixel 101 includes a first view red pixel 101a and a second view red pixel 101b, the second sub-pixel 102 includes a first view green pixel 102a and a second view green pixel 102b, the third sub-pixel 103 includes a first view blue pixel 103a and a second view blue pixel 103b, the first view red pixel 101a, the first view green pixel 102a, and the first view blue pixel 103a are first view pixels, and the second view red pixel 101b, the second view green pixel 102b, and the second view blue pixel 103b are second view pixels; and
the prism pattern microstructure 30 is disposed on the light incident side of the liquid crystal display 20, the prism pattern microstructure 30 includes a plurality of first prism structures 31a and a plurality of second prism structures 31b, each first prism structure 31a is configured to divide light incident to the liquid crystal display 20 into first field of view light, each second prism structure 31b is configured to divide light incident to the liquid crystal display 20 into second field of view light, the first field of view light and the second field of view light are different from the exit position of the liquid crystal display 20, the first prism structures 31a are disposed corresponding to first field of view pixels, and the second prism structures 31b are disposed corresponding to second field of view pixels. In the present embodiment, the first prism structures 31a and the second prism structures 31b of the prism pattern microstructure 30 preferably have a mirror relationship with each other, so as to perform mirror symmetry along the thickness direction of the liquid crystal cell, so as to ensure left-right field symmetry, i.e. the adjacent first prism structures 31a and second prism structures 31b are mirror symmetric.
Specifically, each of the first prism structures 31a includes a first mirror 311, the first mirror 311 is configured to divide light incident to the liquid crystal display 20 into first field-of-view light, each of the second prism structures 31b includes a second mirror 312, the second mirror 312 is configured to divide light incident to the liquid crystal display 20 into second field-of-view light, the first field-of-view light and the second field-of-view light exit from the liquid crystal display 20 at different positions, the first mirror 311 is disposed corresponding to a first field-of-view pixel, and the second mirror 312 is disposed corresponding to a second field-of-view pixel.
The display device achieves switching between the dual field of view, the full field of view, and the peep-proof field of view by controlling the voltage between the first substrate 11 and the second substrate 12 and the video signals given to the first subpixel 101, the second subpixel 102, and the third subpixel 103.
The display device with switchable visual fields disclosed by the embodiment can realize switching among double visual fields, a full visual field and a peep-proof visual field; when the display device performs double-view field display, the driver and the copilot can respectively select favorite display contents; when the display device performs full-view display, a driver and a copilot can watch the same display picture; when the display device displays the left peep-proof view field, the left display content is peep-proof display for the driver, namely the driver cannot watch the picture, and only the right view field is normally displayed for the copilot to watch; when the display device displays the right peep-proof view field, the right display content is peep-proof display for the copilot, namely the copilot cannot watch the picture, and only the left view field is normally displayed for the driver to watch.
Further, the view field controller 10 further includes a first polarizing plate 14, the first polarizing plate 14 is disposed on the first substrate 11, the liquid crystal display 20 further includes a second polarizing plate 21 and a third polarizing plate 22, the second polarizing plate 21 is disposed on the light-emitting side of the liquid crystal display 20, the third polarizing plate 22 is disposed on the light-emitting side of the liquid crystal display 20, an absorption axis of the first polarizing plate 14 is orthogonal to an absorption axis of the second polarizing plate 21, and an absorption axis of the second polarizing plate 21 is orthogonal to an absorption axis of the third polarizing plate 22.
Further, a first alignment film (not shown) is disposed on a side of the first substrate 11 close to the first liquid crystal layer 13, a second alignment film (not shown) is disposed on a side of the second substrate 12 close to the first liquid crystal layer 13, an alignment direction of the first alignment film is parallel to and opposite to an alignment direction of the second alignment film, and an initial pretilt angle of liquid crystal molecules of the first liquid crystal layer 13 is 1 ° to 10 °, preferably, 2 °, 4 °, 5 °, 7 °, and 9 °.
Further, the liquid crystal of the first liquid crystal layer 13 is a positive liquid crystal.
Further, the bias electrode 14 is a planar transparent electrode made of ITO material, but not limited thereto.
Further, a spacer layer 18 is further disposed on the second substrate 12, the common electrode 17 is disposed on the surface of the second substrate 12, the spacer layer 18 covers the common electrode 17, and the pixel electrode 16 is disposed on the spacer layer 18.
Further, fig. 5 is a schematic partial structure diagram of a pixel electrode and a common electrode in a display device with switchable viewing fields according to the present invention, as shown in fig. 5, the pixel electrode 16 includes a plurality of first main lines 161 and a plurality of first branch lines 162, one end of each first branch line 162 is electrically connected to the first main line 161, each first branch line 162 is disposed at an interval along the length direction of the first main line 161, each first branch line 162 is connected to a plurality of first electrode bars 163 and a plurality of second electrode bars 164, each first electrode bar 163 is connected to one side of the first branch line 162, and each second electrode bar 164 is connected to the other side of the first branch line 162.
Further, the common electrode 17 includes a plurality of second main lines 171 and a plurality of second branch lines 172, one end of each second branch line 172 is electrically connected to the second main line 171, each second branch line 172 is disposed at an interval along the length direction of the second main line 171, a plurality of third electrode bars 173 and a plurality of fourth electrode bars 174 are connected to each second branch line 172, each third electrode bar 173 is connected to one side of the second branch line 172, each fourth electrode bar 174 is connected to the other side of the second branch line 172, an orthographic projection of each first electrode bar 163 on the second substrate 12 is staggered from the third electrode bar 173, and an orthographic projection of each second electrode bar 164 on the second substrate 12 is staggered from the fourth electrode bar 174. In the present embodiment, the pixel electrode 16 and the common electrode 17 are both comb-shaped, which can effectively reduce the signal coupling between the pixel electrode 16 and the common electrode 17.
Further, the first electrode stripes 163 are spaced apart from each other along the first branch line 162, the second electrode stripes 164 are spaced apart from each other along the first branch line 162, the third electrode stripes 173 are spaced apart from each other along the second branch line 172, the fourth electrode stripes 174 are spaced apart from each other along the second branch line 172, the first electrode stripes 163 are parallel to the third electrode stripes 173, and the second electrode stripes 164 are parallel to the fourth electrode stripes 174. Further, each first electrode bar 163 is disposed obliquely, and an included angle between each first electrode bar 163 and the first branch line 162 is greater than 0 ° and smaller than 90 °, and preferably 83 °; each second electrode bar 164 is obliquely arranged, and an included angle between each second electrode bar 164 and the first branch line 162 is greater than 0 degrees and smaller than 90 degrees, preferably 83 degrees; each third electrode strip 173 is obliquely arranged, and an included angle between each third electrode strip 173 and the second branch line 172 is greater than 0 degrees and smaller than 90 degrees, preferably 83 degrees; each fourth electrode strip 174 is disposed obliquely, and the included angle between each fourth electrode strip 174 and the second branch line 172 is greater than 0 ° and less than 90 °, preferably 83 °.
Further, each of the first main lines 161 and each of the second main lines 171 are located on the left and right sides of the second substrate 12 near the frame sealing adhesive, and are disposed along the width or length direction of the second substrate 12, the length direction of the first branch line 162 is perpendicular to the length direction of the first main line 161, and the length direction of the second branch line 172 is perpendicular to the length direction of the second main line 171.
In another preferred embodiment, the pixel electrode 16 is comb-shaped, and the common electrode 17 is planar, and is insulated from the pixel electrode by the spacer layer 18.
Further, a first metal mesh (not shown) for reducing the resistance of the pixel electrode 16 and a second metal mesh (not shown) for reducing the resistance of the common electrode 17 are disposed on the second substrate 12, the first metal mesh is electrically connected to the pixel electrode 16, and the second metal mesh is electrically connected to the common electrode 17.
Further, a flat layer 32 is disposed on the prism pattern microstructure 30, and the flat layer 32 covers each first prism structure 31a and each second prism structure 31 b. In the present embodiment, the refractive index of the first and second prism structures 31a and 31b is greater than the refractive index of the planarization layer 32.
Further, fig. 6 is a schematic diagram of a partial structure of the prism pattern microstructure and the pixel in the field-of-view switchable display device of the present invention, as shown in fig. 1 and fig. 6, a first field-of-view red pixel 101a is disposed opposite to a first prism structure 31a, a first field-of-view green pixel 102a is disposed opposite to another first prism structure 31a, and a first field-of-view blue pixel 103a is disposed opposite to another first prism structure 31 a; the second viewing field red pixel 101b is opposite to a second prism structure 31b, the second viewing field green pixel 102b is opposite to another second prism structure 31b, and the second viewing field blue pixel 103b is opposite to another second prism structure 31b, that is, the adjacent first prism structure 31a and second prism structure 31b are respectively corresponding to the first and second viewing field red, green and blue pixels of each sub-pixel (the first sub-pixel 101, the second sub-pixel 102 and the third sub-pixel 103).
Furthermore, an insulating layer 19 is further disposed on the first substrate 11, the bias electrode 14 is disposed on the surface of the first substrate 11, and the insulating layer 19 covers the bias electrode 14.
Further, fig. 7 is a schematic diagram of luminance simulation of the switchable viewing field display device of the invention for performing dual-view and full-view display, fig. 8 is a schematic diagram of luminance simulation of the switchable viewing field display device of the invention for performing anti-peep viewing field display, as shown in fig. 7 and 8, when the display device performs dual-view display, a bias voltage is generated between the first substrate 11 and the second substrate 12, the first viewing field red pixel 101a, the first viewing field green pixel 102a and the first viewing field blue pixel 103a give a first video signal, and the second viewing field red pixel 101b, the second viewing field green pixel 102b and the second viewing field blue pixel 103b give a second video signal, as shown in fig. 2; specifically, the bias electrode 14 applies a voltage of 2V to 3V, and the pixel electrode 16 and the common electrode 17 apply 0V or the applied voltage is less than the liquid crystal threshold, and at this time, the first-view red pixel 101a (r), the first-view green pixel 102a (g), the first-view blue pixel 103a (b), the second-view red pixel 101b (r), the second-view green pixel 102b (g), and the second-view blue pixel 103b (b) are all turned on, and signals of different screens are applied. As shown in fig. 7, the abscissa of the graph is an angle, the ordinate is luminance, the curve (i) is a graph in a dual field display, and when the display device is viewed from the left side, a relatively bright picture can be seen at viewing angles of-55 ° to-35 °; when the display device is viewed from the middle, a black picture can be seen at a viewing angle of 0 DEG; when the display device is viewed from the right side, a relatively bright picture can be seen at a viewing angle of 35 ° to 55 °.
When the display device performs full-view display, the voltages of the bias electrode 14 and the common electrode 17 are 0, the pixel electrode 16 outputs a pixel voltage for driving liquid crystal molecules to deflect, and the same video signals are given to the first view field red pixel 101a, the first view field green pixel 102a, the first view field blue pixel 103a, the second view field red pixel 101b, the second view field green pixel 102b, and the second view field blue pixel 103b, as shown in fig. 3; specifically, 0V is applied to the bias electrode 14 and the common electrode 17, and the pixel electrode 16 applies a voltage of maximum brightness, at which time, the first view red pixel 101a (r), the first view green pixel 102a (g), the first view blue pixel 103a (b), the second view red pixel 101b (r), the second view green pixel 102b (g), and the second view blue pixel 103b (b) are all turned on and are all given signals of the same picture. As shown in FIG. 7, the abscissa in the figure is angle, the ordinate is brightness, the curve II is a graph when displaying in a full view field, and a relatively bright picture can be seen at viewing angles of-65 to 65 degrees.
When the display device performs the left-side peep-proof view field display, a bias voltage is generated between the first substrate 11 and the second substrate 12, the first view field red pixel 101a, the first view field green pixel 102a and the first view field blue pixel 103a give a voltage of a black picture, and the second view field red pixel 101b, the second view field green pixel 102b and the second view field blue pixel 103b give a video signal, as shown in fig. 4; specifically, the bias electrode 14 applies a voltage of 2V to 3V, the pixel electrode 16 and the common electrode 17 apply 0V or the applied voltage is less than the liquid crystal threshold, at this time, the first viewing field red pixel 101a (r), the first viewing field green pixel 102a (g), and the first viewing field blue pixel 103a (b) are turned off, that is, the black screen voltage is applied, and the second viewing field red pixel 101b (r), the second viewing field green pixel 102b (g), and the second viewing field blue pixel 103b (b) are normally turned on, and the signal of the normal screen is applied. As shown in fig. 8, the abscissa in the figure is an angle, the ordinate is luminance, and the curve c is a graph when the peep-proof view field is displayed, and when the display device is viewed from the left side, only a black picture can be seen; when the display device is viewed from the right side, a relatively bright picture can be seen at a viewing angle of 35 ° to 55 °.
In other embodiments, when the display device performs a right-side privacy view display, a bias voltage is generated between the first substrate 11 and the second substrate 12, the second-view red pixel 101b, the second-view green pixel 102b, and the second-view blue pixel 103b apply a voltage to a black frame, and the first-view red pixel 101a, the first-view green pixel 102a, and the first-view blue pixel 103a apply a video signal. Specifically, the bias electrode 14 applies a voltage of 2V to 3V, the pixel electrode 16 and the common electrode 17 apply 0V or the applied voltage is less than the liquid crystal threshold, at this time, the second viewing field red pixel 101b (r), the second viewing field green pixel 102b (g), and the second viewing field blue pixel 103b (b) are turned off, that is, the black screen voltage is applied, the first viewing field red pixel 101a (r), the first viewing field green pixel 102a (g), and the first viewing field blue pixel 103a (b) are normally turned on, and the signal of the normal screen is applied.
Further, the liquid crystal display 20 includes a third substrate 23, a fourth substrate 24, and a second liquid crystal layer 25, the third substrate 23 is disposed opposite to the fourth substrate 24, and the second liquid crystal layer 25 is disposed between the third substrate 23 and the fourth substrate 24. In this embodiment, the third substrate 23 is a color filter substrate, the fourth substrate 24 is an array substrate, the second polarizing plate 21 is disposed on the third substrate 23, and the third polarizing plate 22 is disposed on the fourth substrate 24.
Further, the third substrate 23 includes a first substrate, and a color resistance layer 26 and a black matrix 27 disposed on the first substrate, the color resistance layer 26 and the black matrix 27 are disposed at an interval, the color resistance layer 26 includes, for example, two red (R) color resistors, two green (G) color resistors, and two blue (B) color resistors, wherein one red (R) color resistor corresponds to the first view field red pixel 101a, the other red (R) color resistor corresponds to the second view field red pixel 101B, one green (G) color resistor corresponds to the first view field green pixel 102a, the other green (G) color resistor corresponds to the second view field green pixel 102B, one blue (B) color resistor corresponds to the first view blue pixel 103a, and the other blue (B) color resistor corresponds to the second view blue pixel 103B. In the present embodiment, the black matrix 27 is disposed between two red, two green and two blue resistors and between two adjacent red, two green and two blue resistors, so that the resistors are separated from each other by the black matrix 27.
Further, the fourth substrate 24 includes a second base plate and a circuit control layer 28, the prism pattern microstructure 30 is disposed on the second base plate, and the prism pattern microstructure 30 may be disposed on the surface of the second base plate close to the second liquid crystal layer 25 or disposed on the surface of the second base plate far from the second liquid crystal layer 25; when the prism pattern microstructures 30 are provided on the second base plate near the surface of the second liquid crystal layer 25, the circuit control layer 28 is provided on the planarization layer 32; when the prism pattern microstructure 30 is disposed on the surface of the second base plate away from the second liquid crystal layer 25, the circuit control layer 28 is disposed on the surface of the second base plate close to the second liquid crystal layer 25.
Further, the circuit control layer 28 includes a plurality of scan lines and a plurality of data lines, wherein the plurality of scan lines and the plurality of data lines intersect with each other to define a plurality of sub-pixels SP (sub-pixels) arranged in an array, that is, a first field red pixel 101a, a second field red pixel 101b, a first field green pixel 102a, a second field green pixel 102b, a first field blue pixel 103a, and a second field blue pixel 103b, and a pixel electrode and a Thin Film Transistor (TFT) are disposed in each of the field sub-pixels, and the thin film transistor is disposed near a position where the scan line and the data line intersect. Each thin film transistor comprises a grid electrode, a source electrode and a drain electrode, wherein the grid electrode is electrically connected with the corresponding scanning line, the source electrode is electrically connected with the corresponding data line, and the drain electrode is electrically connected with the corresponding pixel electrode. In the present embodiment, the circuit control layer 28 further includes an insulating layer disposed between the wiring layers, such as a gate insulating layer, an insulating protection layer, a planarization layer 32, and the like.
Further, the liquid crystal display 20 further includes a third alignment film (not shown) disposed on the third substrate 23 and adjacent to the second liquid crystal layer 25, and a fourth alignment film (not shown) disposed on the fourth substrate 24 and adjacent to the second liquid crystal layer 25. In this embodiment, the liquid crystal display 20 may be any one of IPS, FFS and TN modes disclosed in the prior art, and the alignment direction of the third alignment film and the alignment direction of the fourth alignment film refer to the alignment direction of the display panel disclosed in the prior art, which is not described herein again.
Further, the display device further includes a transparent adhesive layer (not shown), and the field controller 10 is connected to the liquid crystal display 20 through the transparent adhesive layer. In this embodiment, the transparent adhesive layer is an OCA optical adhesive.
Further, the display device further includes a backlight module 30, the backlight module 30 is disposed opposite to the liquid crystal display 20, the liquid crystal display 20 is disposed above the backlight module 30, and the backlight module 30 is used for providing a backlight source for the liquid crystal display 20.
Further, fig. 9 is a schematic diagram illustrating control signal transmission of the display device with switchable viewing fields according to the present invention, as shown in fig. 9, the display device with switchable viewing fields further includes a power control chip 41(Poweer IC) and a timing controller 42(Tcon), the power control chip 41 provides electric power for the viewing field controller 10, the liquid crystal display 20 and the backlight module 30, and the timing controller 42 controls the viewing field controller 10 and the liquid crystal display 20 to cooperate with each other to realize switching between dual viewing field display, full viewing field display and anti-peep viewing field display.
The invention also relates to a switchable field of view display method using the switchable field of view display device described above, the method comprising:
controlling a bias voltage generated between the first substrate 11 and the second substrate 12 to give a first video signal to the first-view red pixel 101a, the first-view green pixel 102a and the first-view blue pixel 103a, and give a second video signal to the second-view red pixel 101b, the second-view green pixel 102b and the second-view blue pixel 103b, and the display device performs dual-view display;
controlling the voltages of the bias electrode 14 and the common electrode 17 to be 0, controlling the pixel electrode 16 to output pixel voltages for driving liquid crystal molecules to deflect, and giving the same video signals to the first view field red pixel 101a, the first view field green pixel 102a, the first view field blue pixel 103a, the second view field red pixel 101b, the second view field green pixel 102b and the second view field blue pixel 103b, so that the display device performs full view field display;
the display device performs a peep-proof field display by controlling a bias voltage generated between the first substrate 11 and the second substrate 12, applying a voltage of a black picture to the first field red pixel 101a, the first field green pixel 102a and the first field blue pixel 103a, and applying a video signal to the second field red pixel 101b, the second field green pixel 102b and the second field blue pixel 103 b.
The present invention is not limited to the specific details of the above-described embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (9)
1. A field-of-view switchable display device, comprising:
the visual field controller comprises a first substrate, a second substrate and a first liquid crystal layer, wherein the first substrate and the second substrate are arranged oppositely, the first liquid crystal layer is arranged between the first substrate and the second substrate, a bias voltage electrode is arranged on the first substrate, and a pixel electrode and a common electrode are arranged on the second substrate;
the liquid crystal display is arranged on the light incidence side of the view field controller and comprises a plurality of pixels which are arranged in a matrix manner, each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, and the first sub-pixel, the second sub-pixel and the third sub-pixel respectively comprise a first view field pixel and a second view field pixel; and
the prism pattern microstructure is arranged on the light incidence side of the liquid crystal display and comprises a plurality of first prism structures and a plurality of second prism structures, each first prism structure is used for dividing light incident to the liquid crystal display into first view field light, each second prism structure is used for dividing light incident to the liquid crystal display into second view field light, the first prism structures are arranged corresponding to the first view field pixels, and the second prism structures are arranged corresponding to the second view field pixels;
the display device realizes the switching among the double view fields, the full view field and the peep-proof view field by controlling the voltage between the first substrate and the second substrate and the video signals given to the first sub-pixel, the second sub-pixel and the third sub-pixel;
when the display device performs double-view field display, a bias voltage is generated between the first substrate and the second substrate, and liquid crystal molecules of the first liquid crystal layer are influenced by the bias voltage to deflect in the vertical direction; the first field of view pixels are assigned a first video signal and the second field of view pixels are assigned a second video signal;
when the display device displays in a full-field, the voltage of the bias electrode and the common electrode is 0, the pixel electrode outputs a pixel voltage for driving liquid crystal molecules to deflect, and the liquid crystal molecules of the first liquid crystal layer are influenced by the pixel voltage to deflect in the horizontal direction; assigning the same video signal to the first field of view pixels and the second field of view pixels;
when the display device carries out peep-proof visual field display, a bias voltage is generated between the first substrate and the second substrate, liquid crystal molecules of the first liquid crystal layer are influenced by the bias voltage to deflect in the vertical direction, the first visual field pixel is endowed with voltage of a black picture, and the second visual field pixel is endowed with a video signal; alternatively, the first field-of-view pixels are supplied with a video signal, and the second field-of-view pixels are supplied with a voltage for a black picture.
2. The switchable-field-of-view display device of claim 1, wherein the field-of-view controller further comprises a first polarizer disposed on the first substrate, the liquid crystal display further comprises a second polarizer disposed on a light-exit side of the liquid crystal display and a third polarizer disposed on a light-entrance side of the liquid crystal display, an absorption axis of the first polarizer is orthogonal to an absorption axis of the second polarizer, and an absorption axis of the second polarizer is orthogonal to an absorption axis of the third polarizer.
3. The switchable viewing field display device of claim 1, wherein a first alignment film is disposed on a side of the first substrate adjacent to the first liquid crystal layer, a second alignment film is disposed on a side of the second substrate adjacent to the first liquid crystal layer, an alignment direction of the first alignment film is parallel to and opposite to an alignment direction of the second alignment film, and an initial pretilt angle of liquid crystal molecules of the first liquid crystal layer is between 1 ° and 10 °.
4. The switchable field of view display device of claim 1, wherein a spacer layer is further disposed on the second substrate, the common electrode is disposed on a surface of the second substrate, the spacer layer covers the common electrode, and the pixel electrode is disposed on the spacer layer.
5. The switchable field of view display device of claim 4, wherein the pixel electrode comprises a plurality of first main lines and a plurality of first branch lines, one end of each first branch line is electrically connected to the first main line, each first branch line is arranged at intervals along the length direction of the first main line, a plurality of first electrode strips and a plurality of second electrode strips are connected to each first branch line, each first electrode strip is connected to one side of the first branch line, and each second electrode strip is connected to the other side of the first branch line.
6. The switchable field of view display device of claim 5, wherein the common electrode comprises a plurality of second main lines and a plurality of second branch lines, one end of each second branch line is electrically connected to the second main line, each second branch line is disposed at intervals along a length direction of the second main line, each second branch line is connected to a plurality of third electrode bars and a plurality of fourth electrode bars, each third electrode bar is connected to one side of the second branch line, each fourth electrode bar is connected to the other side of the second branch line, an orthographic projection of each first electrode bar on the second substrate is staggered from the third electrode bar, and an orthographic projection of each second electrode bar on the second substrate is staggered from the fourth electrode bar.
7. The switchable-field-of-view display device of claim 1, wherein a first metal mesh for reducing the resistance of the pixel electrode and a second metal mesh for reducing the resistance of the common electrode are disposed on the second substrate, the first metal mesh is electrically connected to the pixel electrode, and the second metal mesh is electrically connected to the common electrode.
8. The switchable field of view display device of claim 1, wherein an insulating layer is further disposed on the first substrate, the bias electrode is disposed on a surface of the first substrate, and the insulating layer covers the bias electrode.
9. A switchable field of view display method using the switchable field of view display device of any one of claims 1 to 8, the method comprising:
controlling a bias voltage generated between the first substrate and the second substrate, giving a first video signal to the first view field pixel and giving a second video signal to the second view field pixel, and carrying out double-view display by the display device;
controlling the voltage of the bias electrode and the common electrode to be 0, controlling the pixel electrode to output a pixel voltage for driving liquid crystal molecules to deflect, and endowing the same video signals for the first view field pixel and the second view field pixel, wherein the display device carries out full view field display;
controlling a bias voltage generated between the first substrate and the second substrate, giving a voltage of a black picture to the first view field pixel, giving a video signal to the second view field pixel, and carrying out peep-proof view field display by the display device; or controlling a bias voltage generated between the first substrate and the second substrate, wherein the first view field pixel gives a video signal, and the second view field pixel gives a voltage of a black picture.
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