CN212009233U - Display device with switchable field of view - Google Patents
Display device with switchable field of view Download PDFInfo
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- CN212009233U CN212009233U CN202020900825.XU CN202020900825U CN212009233U CN 212009233 U CN212009233 U CN 212009233U CN 202020900825 U CN202020900825 U CN 202020900825U CN 212009233 U CN212009233 U CN 212009233U
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Abstract
A display device with switchable visual field comprises a visual field controller and a liquid crystal display, wherein the visual field controller comprises a first substrate, a second substrate, a first liquid crystal layer, a plurality of first electrode strips and a plurality of second electrode strips, the first liquid crystal layer is arranged between the first substrate and the second substrate, the first electrode strips are arranged on the first substrate at intervals, the second electrode strips are arranged on the second substrate at intervals, and the first electrode strips and the second electrode strips are arranged oppositely, when the pressure difference for driving the liquid crystal to deflect exists between each first electrode strip and each second electrode strip, the liquid crystal between each first electrode strip and each second electrode strip forms a grating for blocking light rays, the display device can realize double-view field display, when the voltage difference for driving the liquid crystal to deflect does not exist between each first electrode strip and each second electrode strip, the display device can realize full-field display. The display device with switchable visual fields disclosed by the embodiment can realize free switching between full visual field display and dual visual field display.
Description
Technical Field
The utility model relates to a display technical field, in particular to changeable display device of field of view.
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.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a changeable display device of visual field can realize that full visual field shows and two visual field show freely to switch, possesses bigger advantage.
A display device with switchable visual field comprises a liquid crystal display for providing images, and a visual field controller arranged at the light-emitting side of the liquid crystal display, wherein the visual field controller comprises a first substrate, a second substrate, a first liquid crystal layer, a plurality of first electrode strips and a plurality of second electrode strips, 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, the first electrode strips are arranged on the first substrate at intervals, the second electrode strips are arranged on the second substrate at intervals, the first electrode strips and the second electrode strips are arranged oppositely, when a pressure difference for driving the liquid crystal to deflect exists between the first electrode strips and the second electrode strips, the liquid crystal between the first electrode strips and the second electrode strips forms a grating for blocking light rays, the display device can realize double visual field display, when the pressure difference for driving the liquid crystal to deflect does not exist between the first electrode strips and the second electrode strips, the display device can realize full-view display.
In an embodiment of the present invention, the above view field controller further includes a first polarizing plate disposed on the light-emitting side of the first substrate, the liquid crystal display includes a display panel, the display panel includes a second polarizing plate and a third polarizing plate, the second polarizing plate is disposed on the light-emitting side of the display panel, the third polarizing plate is disposed on the light-emitting side of the display panel, the absorption axis of the first polarizing plate is perpendicular to the absorption axis of the second polarizing plate, and the absorption axis of the second polarizing plate is perpendicular to the absorption axis of the third polarizing plate.
In an embodiment of the present invention, the above view field controller further includes a first alignment film and a second alignment film, the first alignment film is disposed on the first substrate, the second alignment film is disposed on the second substrate, an alignment direction of the first alignment film is perpendicular to an alignment direction of the second alignment film, and the alignment direction of the first alignment film or the second alignment film is perpendicular to an absorption axis of the second polarizer.
In an embodiment of the present invention, the display panel includes a third substrate, a fourth substrate and a second liquid crystal layer, the third substrate is disposed opposite to the fourth substrate, the second liquid crystal layer is disposed between the third substrate and the fourth substrate, the second polarizer is disposed on the fourth substrate, and the third polarizer is disposed on the third substrate.
In an embodiment of the present invention, the third substrate includes a first base plate, a first flat layer and a circuit control layer, the surface of the first base plate is provided with a prism structure, the first flat layer covers the prism structure, and the circuit control layer is disposed on the first flat layer.
In an embodiment of the present invention, the prism structure is formed by sequentially arranging a plurality of prisms along the width or length direction of the first base plate, the prisms include a first mirror surface, a second mirror surface and an edge, an included angle between the first mirror surface and the first base plate is 20 ° to 30 °, an included angle between the second mirror surface and the first base plate is 20 ° to 30 °, and a distance between the edge and the first base plate is 5000 angstroms to 9000 angstroms.
In an embodiment of the present invention, the display panel further includes a color film layer, and the color film layer is located on the fourth substrate and is disposed opposite to the third substrate.
In an embodiment of the present invention, the above view field controller further includes a color film layer disposed on the first substrate, the color film layer is provided with a second flat layer, and each of the first electrode strips is disposed on the second flat layer.
In an embodiment of the present invention, the field controller further includes a color film layer disposed on the second substrate, the color film layer is provided with a third flat layer, and each of the second electrode strips is disposed on the third flat layer.
In an embodiment of the present invention, the display device further includes a transparent adhesive layer, and the viewing field controller is connected to the liquid crystal display through the transparent adhesive layer.
The utility model discloses a changeable display device in visual field can realize that full visual field shows and two visual field show freely switching, compares and possesses bigger advantage in current framework.
Drawings
Fig. 1 is a schematic cross-sectional view of a display device with switchable viewing fields according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of the field-of-view switchable display device shown in fig. 1 for full field display.
Fig. 3 is a schematic diagram of a dual field of view display of the switchable field of view display apparatus shown in fig. 1.
Fig. 4 is a schematic cross-sectional view of a third substrate in a display device with switchable viewing fields according to a first embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of a display device with switchable viewing fields according to a second embodiment of the present invention.
Fig. 6 is a schematic diagram of a pixel relationship between a grating shielding area and a color film layer of a viewing field controller in a display device with switchable viewing fields according to a second embodiment of the present invention.
Fig. 7 is a schematic cross-sectional view of a display device with switchable viewing fields according to a third embodiment of the present invention.
Detailed Description
First embodiment
Fig. 1 is a schematic cross-sectional structure diagram of a display device with switchable viewing fields according to a first embodiment of the present invention, fig. 2 is a schematic cross-sectional structure diagram of the display device with switchable viewing fields shown in fig. 1, fig. 3 is a schematic diagram of the display device with switchable viewing fields shown in fig. 1, fig. 2 and fig. 3 are schematic diagrams of a display device with switchable viewing fields, and the display device with switchable viewing fields includes a viewing field controller 10 and a liquid crystal display cooperating with the viewing field controller 10 and providing images, and the viewing field controller 10 is located on a light emitting side of the liquid crystal display. The field controller 10 includes a first substrate 11, a second substrate 12, a first liquid crystal layer 13, a plurality of first electrode stripes 14 and a plurality of second electrode stripes 15, the first substrate 11 is disposed opposite to the second substrate 12, the first liquid crystal layer 13 is disposed between the first substrate 11 and the second substrate 12, the first electrode stripes 14 are disposed on the first substrate 11 at intervals, the second electrode stripes 15 are disposed on the second substrate 12 at intervals, and the first electrode stripes 14 are disposed opposite to the second electrode stripes 15. As shown in fig. 1 and fig. 3, in this embodiment, when a voltage difference exists between each first electrode bar 14 and each second electrode bar 15 to drive the liquid crystal to deflect, an area between the first electrode bar 14 and the second electrode bar 15 is a light-shielding area, an area without the first electrode bar 14 and the second electrode bar 15 is a light-transmitting area, and at this time, the viewing field control device 10 is in a raster mode, and is matched with the liquid crystal display on the light incident side, so that the display apparatus can implement dual viewing field display. As shown in fig. 1 and fig. 2, in the present embodiment, when there is no voltage difference between each first electrode bar 14 and each second electrode bar 15 for driving liquid crystal to deflect, or the voltage difference for driving liquid crystal to deflect is smaller than a threshold value, the field controller 10 is in a full-transmission mode, the display device can implement full-field display, the threshold value is larger than or equal to a cell thickness of the first liquid crystal layer 13, a liquid crystal material, an initial pretilt angle of the liquid crystal, and an ambient temperature of the display device, and preferably, the threshold value is smaller than or equal to 1V.
The utility model discloses a changeable display device in visual field can realize that full visual field shows and two visual field show freely switching, compares and possesses bigger advantage in current framework.
Furthermore, the first electrode stripes 14 are disposed on the inner side of the first substrate 11 close to the first liquid crystal layer 13, the second electrode stripes 15 are disposed on the inner side of the second substrate 12 close to the first liquid crystal layer 13, the first electrode stripes 14 and the second electrode stripes 15 are disposed in parallel and at intervals along the R, G, B pixel arrangement direction of the display device, and the first electrode stripes 14 and the second electrode stripes 15 are disposed opposite to each other in the vertical direction, that is, the orthographic projection of the first electrode stripes 14 on the second substrate 12 coincides with the second electrode stripes 15.
Further, the liquid crystal of the first liquid crystal layer 13 is a positive liquid crystal.
Further, the view field controller 10 further includes a first polarizing plate 16, the first polarizing plate 16 is disposed on the light-emitting side of the first substrate 11 (the first polarizing plate 16 is disposed on the outer side of the first substrate 11), the liquid crystal display includes a display panel 20, the display panel 20 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 display panel 20, the third polarizing plate 22 is disposed on the light-emitting side of the display panel 20, an absorption axis of the first polarizing plate 16 is perpendicular to an absorption axis of the second polarizing plate 21, and an absorption axis of the second polarizing plate 21 is perpendicular to an absorption axis of the third polarizing plate 22.
Further, the view field controller 10 further includes a first alignment film (not shown) disposed on the first substrate 11 and a second alignment film (not shown) disposed on the second substrate 12, an alignment direction of the first alignment film is perpendicular to an alignment direction of the second alignment film, and an alignment direction of the first alignment film or the second alignment film is perpendicular to the absorption axis of the second polarizer 21.
Further, as shown in fig. 1, the display panel 20 includes a third substrate 23, the third substrate 23 includes a first base plate 231, a first flat layer 232 and a circuit control layer 233, a surface of the first base plate 231 is provided with a prism structure 234, the first flat layer 232 is covered on the prism structure 234, and the circuit control layer 233 is disposed on the first flat layer 232. That is, the third substrate 23 is an array substrate. In the present embodiment, the prism structure 234 is used to increase the light intensity of the dual fields of view, thereby improving the display effect.
Further, fig. 4 is a schematic cross-sectional structure diagram of a third substrate in a display device with switchable viewing fields according to a first embodiment of the present invention. As shown in fig. 1 and 4, the prism structure 234 is formed by sequentially arranging a plurality of prisms 234a along the width or length direction of the first base 231, each prism 234a includes a first mirror 101, a second mirror 102, and an edge 103, an included angle between the first mirror 101 and the first base 231 is 20 ° to 30 °, an included angle between the second mirror 102 and the first base 231 is 20 ° to 30 °, and a distance L between the edge 103 and the first base 231 is 5000 angstrom to 9000 angstrom. In the present embodiment, the distance L between the edge 103 and the first bottom plate 231 is proportional to the light enhancement effect, i.e., the greater the distance L, the better the light enhancement effect.
Further, the circuit control layer 233 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 pixels SP (sub-pixels) arranged in an array, each pixel has a pixel electrode and a Thin Film Transistor (TFT) disposed therein, and the TFT is located near a position where the scan lines and the data lines 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 233 further includes an insulating layer, such as a gate insulating layer, an insulating protective layer, a planarization layer, and the like, disposed between the wiring layers.
Further, the display panel 20 further includes a fourth substrate 26, a second liquid crystal layer 25, and a color film layer 24, the third substrate 23 is disposed opposite to the fourth substrate 26, and the color film layer 24 is disposed on the fourth substrate 26 and is disposed opposite to the third substrate 23, that is, the fourth substrate 26 is a color film substrate. The second liquid crystal layer 25 is disposed between the third substrate 23 and the fourth substrate 26, the second polarizing plate 21 is disposed on the fourth substrate 26, and the third polarizing plate 22 is disposed on the third substrate 23.
In this embodiment, the fourth substrate 26 includes a second base plate, the color film layer 24 is located on the second base plate, the color film layer 24 includes a color resistance layer and a black matrix layer disposed on the second base plate, the color resistance layer and the black matrix are disposed at an interval, the color resistance layer includes, for example, a color resistance material of three colors of red (R), green (G), and blue (B), and the black matrix is disposed between the red, green, and blue resistances, so that two adjacent color resistances are spaced apart from each other by the black matrix.
In the present embodiment, the display panel 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 26 and adjacent to the second liquid crystal layer 25. The display panel 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 comprises a transparent adhesive layer 17, and the field controller 10 is connected to the liquid crystal display through the transparent adhesive layer 17. In the present embodiment, the transparent adhesive layer 17 is an OCA optical adhesive.
Further, the view field controller 10 further includes an insulating layer 18, the insulating layer 18 is disposed on the second substrate 12 and covers each of the second electrode bars 15, and the second alignment film is disposed on a surface of the insulating layer 18. In the present embodiment, the insulating layer 18 is a silicon nitride layer or a transparent planarization layer.
In another preferred embodiment, an insulating layer 18 is disposed on the first substrate 11 and covers each of the first electrode stripes 14, and the first alignment film is disposed on a surface of the insulating layer 18.
Further, the liquid crystal display further includes a backlight module 30, the backlight module 30 is disposed opposite to the display panel 20, the display panel 20 is located above the backlight module 30, and the backlight module 30 is used for providing a backlight source for the display panel 20.
As shown in fig. 1 and fig. 2, when the display device is to realize full-field display, the field controller 10 switches the voltage difference between each first electrode strip 14 and each second electrode strip 15 to 0 or less than the liquid crystal threshold, and at the same time, the liquid crystal display controls the video signal to enter the timing controller, the timing controller controls the scan lines to be turned on one by one, and when the scan lines are turned on, the timing controller controls each data line to send out a corresponding signal according to the video signal, so that the pixels controlled by the line scan lines are endowed with full-field video signals, and each line scan line is turned on in sequence until a complete image is displayed.
As shown in fig. 1 and fig. 3, when the display device switches from full-field to dual-field display, the field controller 10 switches to a state where a voltage difference exists between each first electrode strip 14 and each second electrode strip 15 (the voltage difference is greater than the liquid crystal threshold), and at the same time, the video signals enter the timing controller as first video signals and second video signals, and first "scan line synchronization" is performed on the first video signals and the second video signals from the two video sources, and when a scan line scans one of the rows, the data lines corresponding to the first visual area and the second visual area simultaneously provide signals for the row where the scan line is located; and then, carrying out alternate rearrangement on the images of the first video signal and the second video signal so as to control different data lines according to different video signals respectively, namely controlling the data line in the first visual area by using the first video signal and controlling the data line in the second visual area by using the second video signal, so that the two visual areas respectively display the images of the two video signals, and the images of the first visual field display area and the second visual field display area are realized.
Second embodiment
Fig. 5 is a schematic sectional structure view of a display device with switchable viewing field according to a second embodiment of the present invention, and fig. 6 is a schematic pixel relationship diagram of a viewing field controller in a display device with switchable viewing field according to a second embodiment of the present invention, wherein the grating blocks a region and a color film layer.
As shown in fig. 5, the display device of the present embodiment has substantially the same structure as the display device of the first embodiment, but is different in the position of the color film layer 24.
In this embodiment, the display panel 20 includes a third substrate 23, a fourth substrate 26, and a second liquid crystal layer 25, the second liquid crystal layer 25 is disposed between the third substrate 23 and the fourth substrate 26, and the fourth substrate 26 includes a second backplane.
In this embodiment, the view field controller 10 further includes a color film layer 24, specifically, the color film layer 24 is disposed on the first substrate 11, a second flat layer 241 is disposed on the color film layer 24, and each first electrode bar 14 is disposed on the second flat layer 241.
In the present embodiment, the distance between the shielding region of the grating 131 formed by the field controller 10 and the color film layer 24 is limited to a range of several micrometers, so that the light emitted from the opening region of the field controller 10 has a larger angle with respect to the normal of the opening region, and a larger viewing angle can be obtained.
Further, as shown in fig. 6, the maximum viewing angle of the display device is:
Third embodiment
Fig. 7 is a schematic cross-sectional view of a display device with switchable viewing fields according to a third embodiment of the present invention. As shown in fig. 7, the display device of the present embodiment has substantially the same structure as the display device of the second embodiment, but differs from the display device of the second embodiment in the position of the color film layer 24.
In this embodiment, the display panel 20 includes a third substrate 23, a fourth substrate 26, and a second liquid crystal layer 25, the second liquid crystal layer 25 is disposed between the third substrate 23 and the fourth substrate 26, and the fourth substrate 26 includes a second backplane.
In this embodiment, the view field controller 10 further includes a color film layer 24, specifically, the color film layer 24 is disposed on the second substrate 12, a third flat layer 242 is disposed on the color film layer 24, and each second electrode strip 15 is disposed on the third flat layer 242. In the present embodiment, the thickness of the third planarization layer 242 is 2um, for example, the above formula calculates that the viewing angle θ is 88.85 °, and the crosstalk angle β is 56.3 °.
In the embodiment, the distance between the shielding region of the grating 131 formed by the field controller 10 and the color film layer 24 is reduced, so that the light emitted from the opening region of the field controller 10 has a larger angle with respect to the normal of the opening region, and a larger viewing angle can be obtained.
The utility model discloses not be limited to the specific details among the above-mentioned embodiment the utility model discloses a within the technical idea scope, can be right the technical scheme of the utility model carry out multiple simple variant, these simple variants all belong to the utility model discloses a protection scope. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
Claims (10)
1. A display device with switchable visual field comprises a liquid crystal display for providing images, and is characterized by further comprising a visual field controller positioned on the light emitting side of the liquid crystal display, wherein the visual field controller comprises a first substrate, a second substrate, a first liquid crystal layer, a plurality of first electrode strips and a plurality of second electrode strips, the first substrate and the second substrate are oppositely arranged, the first liquid crystal layer is arranged between the first substrate and the second substrate, the first electrode strips are arranged on the first substrate at intervals, the second electrode strips are arranged on the second substrate at intervals, the first electrode strips and the second electrode strips are oppositely arranged, when a pressure difference for driving liquid crystal to deflect exists between the first electrode strips and the second electrode strips, liquid crystals between the first electrode strips and the second electrode strips form gratings for blocking light rays, the display device can realize double-field display, and when the pressure difference for driving the liquid crystal to deflect does not exist between each first electrode strip and each second electrode strip, the display device can realize full-field display.
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 light-emitting side of the first substrate, the liquid crystal display comprises a display panel comprising a second polarizer disposed on the light-emitting side of the display panel and a third polarizer disposed on the light-emitting side of the display panel, an absorption axis of the first polarizer is perpendicular to an absorption axis of the second polarizer, and an absorption axis of the second polarizer is perpendicular to an absorption axis of the third polarizer.
3. The switchable viewing field display device of claim 2, wherein the viewing field controller further comprises a first alignment film disposed on the first substrate and a second alignment film disposed on the second substrate, an alignment direction of the first alignment film and an alignment direction of the second alignment film are perpendicular to each other, and an alignment direction of the first alignment film or the second alignment film is perpendicular to an absorption axis of the second polarizer.
4. The switchable-field-of-view display device of claim 2, wherein the display panel comprises a third substrate, a fourth substrate, and a second liquid crystal layer, the third substrate being disposed opposite the fourth substrate, the second liquid crystal layer being disposed between the third substrate and the fourth substrate, the second polarizer being disposed on the fourth substrate, and the third polarizer being disposed on the third substrate.
5. The switchable field of view display device of claim 4 wherein the third substrate comprises a first backplane, a first planarization layer, and a circuit control layer, a surface of the first backplane being provided with prismatic structures, the first planarization layer overlying the prismatic structures, the circuit control layer being provided on the first planarization layer.
6. The switchable field of view display device of claim 5, wherein the prism structure is formed by a plurality of prisms sequentially arranged along the width or length of the first substrate, the prisms include a first mirror, a second mirror, and an edge, the first mirror has an included angle of 20 ° to 30 ° with the first substrate, the second mirror has an included angle of 20 ° to 30 ° with the first substrate, and the edge is located at a distance of 5000 angstroms to 9000 angstroms from the first substrate.
7. The switchable-field-of-view display device of claim 4, wherein the display panel further comprises a color film layer disposed on the fourth substrate and opposite to the third substrate.
8. The switchable-field-of-view display device of claim 4, wherein the field-of-view controller further comprises a color film layer disposed on the first substrate, the color film layer having a second planar layer disposed thereon, each of the first electrode stripes being disposed on the second planar layer.
9. The switchable field of view display device of claim 4, wherein the field of view controller further comprises a color film layer disposed on the second substrate, a third flat layer disposed on the color film layer, and each of the second electrode strips disposed on the third flat layer.
10. The switchable field of view display device of claim 1, further comprising a layer of clear adhesive, the field of view controller being coupled to the liquid crystal display through the layer of clear adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020900825.XU CN212009233U (en) | 2020-05-26 | 2020-05-26 | Display device with switchable field of view |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020900825.XU CN212009233U (en) | 2020-05-26 | 2020-05-26 | Display device with switchable field of view |
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| CN212009233U true CN212009233U (en) | 2020-11-24 |
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| CN202020900825.XU Active CN212009233U (en) | 2020-05-26 | 2020-05-26 | Display device with switchable field of view |
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