CN213023865U - Display panel with switchable wide and narrow viewing angles and display device - Google Patents

Abstract

The utility model discloses a changeable display panel of wide and narrow visual angle and display device, this display panel is including adjusting luminance the box, adjust luminance the box including first base plate, second base plate and first liquid crystal layer, be equipped with first polaroid on the first base plate, be equipped with the second polaroid on the second base plate, the printing opacity axle of first polaroid and the printing opacity axle mutually perpendicular of second polaroid, first base plate is equipped with visual angle control electrode in one side towards first liquid crystal layer, the second base plate be equipped with in one side towards first liquid crystal layer with visual angle control electrode complex first electrode and second electrode, first electrode includes a plurality of first electrode strips, the second electrode includes a plurality of second electrode strips, first electrode strip parallels and mutual alternate arrangement with the second electrode strip. The first electrode, the second electrode and the visual angle control electrode on the first substrate are matched with each other to drive the liquid crystal molecules of the first liquid crystal layer to be switched between the inclined posture and the lying posture, so that the switching of the wide and narrow visual angles is realized.

Description

Display panel with switchable wide and narrow viewing angles and display device

Technical Field

The utility model relates to a show technical field, especially relate to a changeable display panel of wide and narrow visual angle and display device.

Background

With the continuous progress of the liquid crystal display technology, the visual angle of the display has been widened from about 112 ° to over 122 °, and people want to effectively protect business confidentiality and personal privacy while enjoying visual experience brought by a large visual angle, so as to avoid business loss or embarrassment caused by the leakage of screen information. Therefore, in addition to the requirement of wide viewing angle, in many cases, the display device is required to have the function of switching between wide and narrow viewing angles.

At present mainly take attached tripe barrier film on the display screen to realize the switching of wide narrow visual angle, when needs peep-proof, utilize the tripe barrier film to cover the screen and can reduce the visual angle, but this kind of mode needs additionally to prepare the tripe barrier film, can cause very big inconvenience for the user, and a tripe barrier film can only realize a visual angle, in case after the attached tripe barrier film, the visual angle is just fixed in narrow visual angle mode, lead to can't freely switch between wide visual angle mode and narrow visual angle mode, and the peep-proof piece can cause the luminance to reduce and influence the display effect.

In the prior art, a vertical electric field is applied to liquid crystal molecules by using a viewing angle control electrode on one side of a Color Filter (CF) substrate, so that liquid crystals deflect in a vertical direction, and a narrow viewing angle mode is realized. By controlling the voltage on the viewing angle control electrode, switching between a wide viewing angle and a narrow viewing angle can be achieved, but the narrow viewing angle of such a display panel is not ideal.

SUMMERY OF THE UTILITY MODEL

In order to overcome the shortcoming and the deficiency that exist among the prior art, the utility model aims to provide a changeable display panel of wide and narrow visual angle and display device to solve the problem among the prior art.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a changeable display panel of wide and narrow visual angle, including the box of adjusting luminance, the box of should adjusting luminance includes first base plate, the second base plate that sets up relatively with this first base plate and locate the first liquid crystal layer between this first base plate and this second base plate, be equipped with first polaroid on this first base plate, be equipped with the second polaroid on this second base plate, the printing opacity axle of this first polaroid and the printing opacity axle mutually perpendicular of this second polaroid, this first base plate is equipped with visual angle control electrode in the one side towards this first liquid crystal layer, this second base plate is equipped with in the one side towards this first liquid crystal layer with first electrode of this visual angle control electrode complex and second electrode, this first electrode includes a plurality of first electrode strips, this second electrode includes a plurality of second electrode strips, this first electrode strip parallels and mutual alternate arrangement with this second electrode strip.

Furthermore, an included angle formed by the alignment direction of the first liquid crystal layer and the transmission axes of the first polarizer and the second polarizer is 45 °.

Furthermore, the extending direction of the first electrode strips and the extending direction of the second electrode strips form an included angle of 0-7 degrees with the alignment direction of the first liquid crystal layer.

Furthermore, the first electrode strips and the second electrode strips are both of a zigzag structure.

Further, the first electrode and the second electrode are located in different layers and insulated and isolated.

Further, the first electrode further comprises a first lead wire, the first lead wire electrically connects the plurality of first electrode strips, the second electrode further comprises a second lead wire, and the second lead wire electrically connects the plurality of second electrode strips.

Further, the projections of the first electrode strips on the plane where the second substrate is located and the projections of the second electrode strips on the plane where the second substrate is located are alternately arranged.

Further, the display panel further comprises a display liquid crystal box, and the display liquid crystal box and the dimming box are arranged in a stacked mode.

Furthermore, the display liquid crystal box comprises a color film substrate, an array substrate arranged opposite to the color film substrate and a second liquid crystal layer positioned between the color film substrate and the array substrate, wherein a third polarizer is arranged on one side of the display liquid crystal box far away from the dimming box, and a transmission axis of the polarizer between the dimming box and the display liquid crystal box is vertical to a transmission axis of the third polarizer.

The utility model also provides a display device, include as above the changeable display panel of wide and narrow visual angle.

The utility model has the advantages that: the display panel with the switchable wide and narrow visual angles comprises a dimming box, the dimming box comprises a first substrate, a second substrate and a first liquid crystal layer, a first polaroid is arranged on the first substrate, a second polaroid is arranged on the second substrate, a light transmission shaft of the first polaroid is perpendicular to a light transmission shaft of the second polaroid, a visual angle control electrode is arranged on one side of the first substrate facing the first liquid crystal layer, a first electrode and a second electrode which are matched with the visual angle control electrode are arranged on one side of the second substrate facing the first liquid crystal layer, the first electrode comprises a plurality of first electrode strips, the second electrode comprises a plurality of second electrode strips, and the first electrode strips are parallel to the extension of the second electrode strips and are alternately arranged with each other. The first electrode, the second electrode and the visual angle control electrode on the first substrate are matched with each other to drive the liquid crystal molecules of the first liquid crystal layer to be switched between the inclined posture and the lying posture, so that the switching of the wide and narrow visual angles is realized.

Drawings

Fig. 1 is a schematic structural diagram of a display panel with switchable wide and narrow viewing angles according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a display panel with switchable wide and narrow viewing angles in a narrow viewing angle according to a first embodiment of the present invention;

fig. 3 is a schematic plan view of the first electrode and the second electrode according to the first embodiment of the present invention;

fig. 4 is a schematic diagram of waveforms applied to a display panel with switchable wide and narrow viewing angles in a wide viewing angle according to a first embodiment of the present invention;

fig. 5 is a schematic diagram of waveforms applied to a display panel with switchable wide and narrow viewing angles in a narrow viewing angle according to a first embodiment of the present invention;

fig. 6 is a schematic structural diagram of a display panel with switchable wide and narrow viewing angles in a second embodiment of the present invention at a narrow viewing angle;

fig. 7 is a schematic plan view of the first electrode and the second electrode according to the second embodiment of the present invention;

fig. 8 is a simulation chart of color shift and viewing angle in the second embodiment of the present invention;

fig. 9 is a schematic plan view of a display device according to the present invention;

fig. 10 is a second schematic plan view of the display device of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objectives of the present invention, the following detailed description will be made in conjunction with the accompanying drawings and preferred embodiments for the specific embodiments, structures, features and effects of the display panel and the display device with switchable viewing angles according to the present invention as follows:

[ example one ]

Fig. 1 is the structural schematic diagram of the display panel with switchable wide and narrow viewing angles in the first embodiment of the present invention when the viewing angle is wide, fig. 2 is the structural schematic diagram of the display panel with switchable wide and narrow viewing angles in the first embodiment of the present invention when the viewing angle is narrow, fig. 3 is the planar structural schematic diagram of the first electrode and the second electrode in the first embodiment of the present invention, fig. 4 is the waveform schematic diagram of the display panel with switchable wide and narrow viewing angles in the first embodiment of the present invention when the viewing angle is wide, fig. 5 is the waveform schematic diagram of the display panel with switchable wide and narrow viewing angles in the first embodiment of the present invention when the viewing angle is narrow.

As shown in fig. 1 to fig. 3, a display panel with switchable wide and narrow viewing angles according to an embodiment of the present invention includes a light modulation cell 10 and a display liquid crystal cell 20, wherein the light modulation cell 10 and the display liquid crystal cell 20 are stacked. In this embodiment, the dimming box 10 is disposed below the display liquid crystal cell 20, that is, the dimming box 10 is disposed between the display liquid crystal cell 20 and the backlight module 40, the dimming box 10 is used for controlling a viewing angle of the display device, and the display liquid crystal cell 20 is used for controlling the display device to display a normal picture. Of course, the light modulation cell 10 may be disposed above the display liquid crystal cell 20, or the light modulation cells 10 may be disposed on both the upper and lower sides of the display liquid crystal cell 20.

The light modulation box 10 includes a first substrate 11, a second substrate 12 disposed opposite to the first substrate 11, and a first liquid crystal layer 13 disposed between the first substrate 11 and the second substrate 12. Preferably, the first liquid crystal layer 13 is a positive liquid crystal molecule, i.e., a liquid crystal molecule whose dielectric anisotropy is positive. In the initial state, the first liquid crystal layer 13 is in a lying posture, that is, the positive liquid crystal molecules in the first liquid crystal layer 13 are aligned parallel to the first substrate 10 and the second substrate 20, and the alignment directions of the positive liquid crystal molecules near the first substrate 10 and the positive liquid crystal molecules near the second substrate 20 are antiparallel. Of course, the positive liquid crystal molecules may have a small pretilt angle (e.g., less than 4.5 °) at the initial alignment, i.e., the positive liquid crystal molecules initially form a small angle with the first and second substrates 10 and 20, and the positive liquid crystal molecules may be accelerated to be deflected toward the vertical direction when switching to the narrow viewing angle. Of course, in other embodiments, negative liquid crystal molecules may also be used in the first liquid crystal layer 13, and the negative liquid crystal molecules in the first liquid crystal layer 13 are perpendicular or approximately perpendicular to the first substrate 10 and the second substrate 20.

The first substrate 11 is provided with a first polarizer 31, the second substrate 12 is provided with a second polarizer 32, a transmission axis of the first polarizer 31 is perpendicular to a transmission axis of the second polarizer 32, the first polarizer 31 is disposed between the dimming box 10 and the display liquid crystal box 20, and the second polarizer 32 is disposed on one side of the second substrate 12 away from the first liquid crystal layer 13. The first substrate 11 is provided with a viewing angle control electrode 111 on a side facing the first liquid crystal layer 13, the second substrate 12 is provided with a first electrode 121 and a second electrode 122 on a side facing the first liquid crystal layer 13, the first electrode 121 is matched with the viewing angle control electrode 111, the first electrode 121 comprises a plurality of first electrode stripes 121a, the second electrode 122 comprises a plurality of second electrode stripes 122a, and the first electrode stripes 121a and the second electrode stripes 122a are parallel and are alternately arranged. In this embodiment, the viewing angle control electrode 111 is a planar electrode covering the whole surface of the first substrate 11, and the first electrode 121 and the second electrode 122 are comb-shaped electrodes covering the whole surface of the second substrate 12, that is, the whole surfaces of the first electrode 121 and the second electrode 122 are covered on the second substrate 12 without interruption. Of course, in other embodiments, the first electrode 121 and the second electrode 122 may also be comb-shaped electrodes corresponding to the sub-pixels, and then the first electrode 121 and the second electrode 122 are controlled by the thin film transistor, that is, the second substrate 12 is made into the structure of an array substrate.

Further, an included angle between the alignment direction F of the first liquid crystal layer 13 and the transmission axes of the first polarizer 31 and the second polarizer 32 is 45 °. The extending direction of the first electrode strips 121a and the extending direction of the second electrode strips 122a form an included angle θ of 0-7 ° with the alignment direction F of the first liquid crystal layer 13. Preferably, the extending direction of the first electrode strips 121a and the extending direction of the second electrode strips 122a form an angle θ of 7 ° with the alignment direction F of the first liquid crystal layer 13. For example, if the transmission axis of the first polarizer 31 is 90 °, the transmission axis of the second polarizer 32 is 0 °, the alignment direction of the first liquid crystal layer 13 is 45 °, and the extension direction of the first electrode stripes 121a and the extension direction of the second electrode stripes 122a are both 38 ° or 52 °.

In this embodiment, the first electrode 121 and the second electrode 122 are located in different layers and insulated and isolated, the first electrode 121 further includes a first wire 121b, the first wire 121b electrically connects the plurality of first electrode strips 121a, the second electrode 122 further includes a second wire 122b, the second wire 122b electrically connects the plurality of second electrode strips 122a, and the number of the first wire 121b and the second wire 122b is multiple, so as to reduce the resistance of the first electrode 121 and the second electrode 122. The extending direction of the first conductive wires 121b is perpendicular to the extending direction of the first electrode stripes 121a, and the extending direction of the second conductive wires 122b is perpendicular to the extending direction of the second electrode stripes 122 a. Of course, in other embodiments, the first electrode 121 and the second electrode 122 may also be located on the same layer and insulated and isolated, and in this case, the first conducting wire 121b and the second conducting wire 122b need to be disposed in the non-display area at the edge of the display panel.

Further, the width d1 of the first conductive line 121b is 3-4 μm, the width d2 of the second conductive line 122b is 3-4 μm, and the distance h1 between the first conductive line 121b and the second conductive line 122b is 15-25 μm. Preferably, the width d1 of the first conductive line 121b is 3.5 μm, the width d2 of the second conductive line 122b is 3.5 μm, and the distance h1 between the first conductive line 121b and the second conductive line 122b is 23 μm.

Further, the width d3 of the first electrode stripes 121a is 3-4 μm, and the width d4 of the second electrode stripes 122a is 3-4 μm. Preferably, the width d3 of the first electrode stripes 121a is 3.5 μm, and the width d4 of the second electrode stripes 122a is 3.5 μm. That is, the first conductive line 121b has the same width as the first electrode stripe 121a, the second conductive line 122b has the same width as the second electrode stripe 122a, and the first electrode stripe 121a has the same width as the second electrode stripe 122 a.

Further, the projections of the first electrode stripes 121a on the plane of the second substrate 12 are spaced from and alternately arranged with the projections of the second electrode stripes 122a on the plane of the second substrate 12. Specifically, the distance h2 between the projections of the two on the plane of the second substrate 12 is 1-2 μm. Preferably, the distance h2 between the projections of the first electrode stripes 121a and the second electrode stripes 122a on the plane of the second substrate 12 is 1 μm.

The display liquid crystal cell 20 includes a color filter substrate 21, an array substrate 22 disposed opposite to the color filter substrate 21, and a second liquid crystal layer 23 located between the color filter substrate 21 and the array substrate 22. Preferably, positive liquid crystal molecules, that is, liquid crystal molecules having positive dielectric anisotropy, are used in the second liquid crystal layer 23, and in an initial state, the positive liquid crystal molecules in the second liquid crystal layer 23 are aligned parallel to the color filter substrate 21 and the array substrate 22, and the alignment direction of the positive liquid crystal molecules on a side close to the color filter substrate 21 is parallel to or antiparallel to the alignment direction of the positive liquid crystal molecules on a side close to the array substrate 22. In other embodiments, the array substrate 22 and the first substrate 11 may share a common base to reduce the box thickness of the display panel.

A third polarizer 33 is arranged on the side of the display liquid crystal box 20 far away from the dimming box 10, and the transmission axis of the polarizer between the dimming box 10 and the display liquid crystal box 20 is perpendicular to the transmission axis of the third polarizer 33. In this embodiment, the third polarizer 33 is disposed on the color filter substrate 21, and a transmission axis of the third polarizer 33 is perpendicular to a transmission axis of the first polarizer 31.

The color filter substrate 21 is provided with color resist layers 212 arranged in an array and a black matrix 211 separating the color resist layers 212, and the color resist layers 212 include color resist materials of three colors of red (R), green (G), and blue (B), and correspondingly form sub-pixels of three colors of red (R), green (G), and blue (B).

The array substrate 22 defines a plurality of pixel units on a side facing the second liquid crystal layer 23 by a plurality of scan lines and a plurality of data lines insulated from and crossing each other, a pixel electrode 222 and a thin film transistor are provided in each pixel unit, and the pixel electrode 222 is electrically connected to the data line of the adjacent thin film transistor through the thin film transistor. The thin film transistor includes a gate electrode, an active layer, a drain electrode, and a source electrode, the gate electrode and the scan line are located in the same layer and electrically connected, the gate electrode and the active layer are isolated by an insulating layer, the source electrode and the data line are electrically connected, and the drain electrode and the pixel electrode 222 are electrically connected through a contact hole.

As shown in fig. 1, in the present embodiment, a common electrode 221 is further disposed on a side of the array substrate 22 facing the second liquid crystal layer 23, and the common electrode 221 and the pixel electrode 222 are located at different layers and insulated and isolated by an insulating layer. The common electrode 221 may be located above or below the pixel electrode 222 (the common electrode 221 is located below the pixel electrode 222 in fig. 1). Preferably, the common electrode 221 is a planar electrode disposed over the entire surface, and the pixel electrode 222 is a block electrode disposed in one block in each pixel unit or a slit electrode having a plurality of electrode bars to form a Fringe Field Switching (FFS) mode. Of course, In other embodiments, the pixel electrode 222 and the common electrode 221 may be located on the same layer, but they are insulated from each other, each of the pixel electrode 222 and the common electrode 221 may include a plurality of electrode strips, and the electrode strips of the pixel electrode 222 and the electrode strips of the common electrode 221 are alternately arranged to form an In-Plane Switching (IPS) mode; alternatively, in other embodiments, the array substrate 22 is provided with the pixel electrode 222 on a side facing the second liquid crystal layer 23, and the color filter substrate 21 is provided with the common electrode 221 on a side facing the second liquid crystal layer 23 to form a TN mode or a VA mode, and for other descriptions of the TN mode and the VA mode, reference is made to the prior art, and details are not repeated here.

The first substrate 11, the second substrate 12, the color filter substrate 21, and the array substrate 22 may be made of glass, acrylic, polycarbonate, or other materials. The materials of the viewing angle control electrode 111, the first and second electrodes 121 and 122, the common electrode 221, and the pixel electrode 222 may be Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), or the like.

Further, a backlight module 40 is disposed on a side of the light adjusting box 10 away from the display liquid crystal box 20, and preferably, the backlight module 40 adopts a Collimated Backlight (CBL) mode, which can receive light to ensure a display effect.

The backlight module 40 includes a backlight 41 and a privacy layer 43, and the privacy layer 43 is used to reduce the range of the light exit angle. A brightness enhancement film 42 is further arranged between the backlight 41 and the peep-proof layer 43, and the brightness enhancement film 42 increases the brightness of the backlight module 40. The peep-proof layer 43 is a micro louver structure, and can block light rays with a large incident angle, so that light rays with a small incident angle can pass through the peep-proof layer 43, and the angle range of the light rays passing through the peep-proof layer 43 is reduced. The peep-proof layer 43 includes a plurality of parallel arranged light resistance walls and a light hole between two adjacent light resistance walls, and light absorption materials are arranged on two sides of the light resistance walls. The backlight module 41 may be a side-in type backlight module or a collimating type backlight module.

As shown in fig. 1 and 4, in the wide viewing angle mode, a dc common voltage Vcom is applied to the common electrode 221, a first voltage V1 is applied to the viewing angle control electrode 111, a second voltage V2 is applied to the first electrode 121, a third voltage V3 is applied to the second electrode 122, the first voltage V1 is the same as the dc common voltage, the second voltage V2 and the third voltage V3 are ac voltages fluctuating up and down from the dc common voltage, and the second voltage V2 and the third voltage V3 have opposite polarities at the same time, so that a horizontal electric field (E2 in fig. 1) is formed on the second substrate 12, and a vertical electric field is not formed or a small vertical electric field (e.g., less than 0.5V) is formed between the first substrate 11 and the second substrate 12. Specifically, the first electrode 121 is 0V, and the second voltage V2 and the third voltage V3 are 5V of alternating voltages. The positive liquid crystal molecules of the first liquid crystal layer 13 are basically not deflected in the vertical direction and are in a lying posture, display with a wide viewing angle is realized, and the positive liquid crystal molecules of the first liquid crystal layer 13 are deflected in the horizontal direction to a certain extent, so that light can be transmitted and the generated color cast is small. The pixel electrode 222 applies a corresponding gray scale voltage, a voltage difference is formed between the pixel electrode 222 and the common electrode 221, a horizontal electric field (E1 in fig. 1) is generated, and the positive liquid crystal molecules are deflected in a direction parallel to the horizontal electric field in the horizontal direction, the gray scale voltage includes 0-255 gray scale voltages, and when different gray scale voltages are applied to the pixel electrode 222, the pixel unit presents different brightness, thereby displaying different pictures, and realizing normal display of the display device under a wide viewing angle.

As shown in fig. 2 and 5, in the narrow viewing angle mode, a dc common voltage Vcom is applied to the common electrode 221, a fourth voltage V4 is applied to the viewing angle control electrode 111, a fifth voltage V5 is applied to the first electrode 121, a sixth voltage V6 is applied to the second electrode 122, the fifth voltage V5 is the same as the sixth voltage V6, the fourth voltage V4, the fifth voltage V5 and the sixth voltage V6 are ac voltages fluctuating up and down as the dc common voltage, and the fourth voltage V4 is opposite in polarity to the fifth voltage V5 and the sixth voltage V6 at the same time, so that a large voltage difference (for example, greater than 5V) exists between the fourth voltage V4 and the fifth voltage V5 and the sixth voltage V6, and a large vertical electric field is formed between the first substrate 11 and the second substrate 12 (E3 in fig. 2). Specifically, the fourth voltage V4, the fifth voltage V5, and the sixth voltage V6 are all 5V alternating voltages. The positive liquid crystal molecules of the first liquid crystal layer 13 are greatly deflected in the vertical direction and are in an inclined posture, so that the brightness of the display device is reduced in the oblique viewing direction, the unidirectional viewing angle is narrowed, and the display device finally realizes unidirectional narrow viewing angle display. The pixel electrode 222 applies a corresponding gray scale voltage, a voltage difference is formed between the pixel electrode 222 and the common electrode 221, and a horizontal electric field (E1 in fig. 2) is generated, so that the positive liquid crystal molecules are deflected in a direction parallel to the horizontal electric field in the horizontal direction, the gray scale voltage includes 0-255 gray scale voltages, and when different gray scale voltages are applied to the pixel electrode 222, the pixel unit presents different brightness, thereby displaying different pictures, and realizing normal display of the display device under a narrow viewing angle.

[ example two ]

Fig. 6 is a schematic structural diagram of a display panel with switchable wide and narrow viewing angles in a second embodiment of the present invention, fig. 7 is a schematic structural diagram of a first electrode and a second electrode in a second embodiment of the present invention, and fig. 8 is a simulation diagram of color cast and viewing angles in a second embodiment of the present invention. The embodiment of the present invention provides a display panel with switchable wide and narrow viewing angles, which is substantially the same as the display panel with switchable wide and narrow viewing angles in the first embodiment (fig. 1 to fig. 5), and the difference is that, in this embodiment, the first electrode strips 121a and the second electrode strips 122a are both zigzag structures. That is, an included angle θ formed between the first electrode strips 121a and the alignment direction F of the first liquid crystal layer 13 is 7 ° and-7 °, a bending angle β of the first electrode strips 121a is 166 °, an included angle θ formed between the second electrode strips 122a and the alignment direction F of the first liquid crystal layer 13 is 7 ° and-7 °, and a bending angle β of the second electrode strips 122a is 166 °, so that a dual-domain display mode is realized, and a narrow viewing angle effect at multiple angles is realized.

In this embodiment, the width d1 of the first conductive line 121b is 3 μm, the width d2 of the second conductive line 122b is 3 μm, and the distance h1 between the first conductive line 121b and the second conductive line 122b is 17 μm.

Further, the width d3 of the first electrode stripes 121a is 3 μm, and the width d4 of the second electrode stripes 122a is 3 μm. That is, the first conductive line 121b has the same width as the first electrode stripe 121a, the second conductive line 122b has the same width as the second electrode stripe 122a, and the first electrode stripe 121a has the same width as the second electrode stripe 122 a.

Further, the distance h2 between the projections of the first electrode stripes 121a and the second electrode stripes 122a on the plane of the second substrate 12 is 1.5 μm.

As shown in fig. 8, the abscissa is the viewing angle, the ordinate is the color shift, the curve M represents the change curve of the color shift with angle in the wide viewing angle mode in the prior art, and the curve N represents the change curve of the color shift with angle in the wide viewing angle mode in the present embodiment.

It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.

The utility model also provides a display device, include as above the changeable display panel of wide and narrow visual angle.

Fig. 9 and 10 are schematic plan views of a display device according to an embodiment of the present invention, please refer to fig. 9 and 10, the display device is provided with a viewing angle switching key 50 for a user to send a viewing angle switching request to the display device. The view switching key 50 may be a physical key (as shown in fig. 8), or may be a software control or application program (APP) to implement a switching function (as shown in fig. 9, for example, a wide view and a narrow view are set through a slider). When the user needs to switch between wide visual angle and narrow visual angle, can send visual angle switching request to this display device through operation visual angle switching button 50, finally by the signal of telecommunication of drive chip 60 control application on visual angle control electrode 111, first electrode 121 and second electrode 122, this display device can realize the switching between wide visual angle and the narrow visual angle, when switching into wide visual angle, its drive method adopts the drive method that wide angle mode corresponds, when switching into narrow visual angle, its drive method adopts the drive method that narrow visual angle mode corresponds, consequently the utility model discloses a display device has stronger operation flexibility and convenience, reaches the multi-functional display device of collection amusement video and privacy in an organic whole.

In this document, the terms of upper, lower, left, right, front, rear and the like are used to define the positions of the structures in the drawings and the positions of the structures relative to each other, and are only used for the sake of clarity and convenience in technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims. It is also to be understood that the terms "first" and "second," etc., are used herein for descriptive purposes only and are not to be construed as limiting in number or order.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description in any form, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make some changes or modifications within the technical scope of the present invention without departing from the technical scope of the present invention, and the technical contents of the above disclosure can be utilized to make equivalent embodiments, but the technical contents of the present invention are not broken away from, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims (10)

1. A display panel with switchable wide and narrow viewing angles is characterized by comprising a light modulation box (10), wherein the light modulation box (10) comprises a first substrate (11), a second substrate (12) arranged opposite to the first substrate (11) and a first liquid crystal layer (13) arranged between the first substrate (11) and the second substrate (12), a first polarizer (31) is arranged on the first substrate (11), a second polarizer (32) is arranged on the second substrate (12), a light transmission axis of the first polarizer (31) is perpendicular to a light transmission axis of the second polarizer (32), a viewing angle control electrode (111) is arranged on one side of the first substrate (11) facing the first liquid crystal layer (13), a first electrode (121) and a second electrode (122) matched with the viewing angle control electrode (111) are arranged on one side of the second substrate (12) facing the first liquid crystal layer (13), the first electrode (121) comprises a plurality of first electrode strips (121a), the second electrode (122) comprises a plurality of second electrode strips (122a), and the first electrode strips (121a) and the second electrode strips (122a) are parallel and are alternately arranged.

2. The switchable wide and narrow viewing angle display panel of claim 1, wherein the alignment direction of the first liquid crystal layer (13) forms an angle of 45 ° with the transmission axes of the first polarizer (31) and the second polarizer (32).

3. The switchable display panel of claim 2, wherein the extending direction of the first electrode strips (121a) and the extending direction of the second electrode strips (122a) form an angle of 0-7 ° with the alignment direction of the first liquid crystal layer (13).

4. The switchable wide and narrow viewing angle display panel of claim 1, wherein the first electrode stripes (121a) and the second electrode stripes (122a) are both zigzag structures.

5. The switchable wide and narrow viewing angle display panel of claim 1, wherein the first electrode (121) and the second electrode (122) are located in different layers and isolated from each other.

6. The switchable wide and narrow viewing angle display panel of claim 5, wherein the first electrode (121) further comprises a first conductive line (121b), the first conductive line (121b) electrically connects the plurality of first electrode bars (121a), the second electrode (122) further comprises a second conductive line (122b), and the second conductive line (122b) electrically connects the plurality of second electrode bars (122 a).

7. The switchable wide and narrow viewing angle display panel of claim 1, wherein the projections of the first electrode bars (121a) on the plane of the second substrate (12) are spaced from and arranged alternately with the projections of the second electrode bars (122a) on the plane of the second substrate (12).

8. The switchable wide and narrow viewing angle display panel according to any one of claims 1 to 7, wherein the display panel further comprises a display liquid crystal cell (20), and the display liquid crystal cell (20) is stacked with the light modulation cell (10).

9. The switchable display panel of claim 8, wherein the display liquid crystal cell (20) includes a color filter substrate (21), an array substrate (22) disposed opposite to the color filter substrate (21), and a second liquid crystal layer (23) disposed between the color filter substrate (21) and the array substrate (22), a third polarizer (33) is disposed on a side of the display liquid crystal cell (20) away from the light modulation box (10), and a transmission axis of the polarizer between the light modulation box (10) and the display liquid crystal cell (20) is perpendicular to a transmission axis of the third polarizer (33).

10. A display device comprising the switchable wide and narrow viewing angle display panel according to any one of claims 1 to 9.

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