CN220357372U - Display panel and display device - Google Patents

Abstract

The utility model discloses a display panel and a display device, wherein the display panel comprises a dimming box and a display control box which are sequentially stacked; the dimming box comprises a counter substrate, a first array substrate and a polymer stabilized cholesteric liquid crystal layer, wherein the polymer stabilized cholesteric liquid crystal layer is positioned between the counter substrate and the first array substrate; the display control box is provided with a plurality of display pixels distributed in an array, and dimming pixels are in one-to-one correspondence with the display pixels. The first pixel electrode and the first public electrode control the stable polymer cholesteric liquid crystal layer corresponding to different dimming pixels to switch between a transparent state and a scattering state, so that wide-narrow visual angle switching, high contrast and regional dimming are realized.

Description

Display panel and display device

Technical Field

The present utility model relates to the field of display technologies, and in particular, to a display panel and a display device.

Background

With the continuous progress of the liquid crystal display technology, the visual angle of the display is widened to more than 160 degrees from the original 112 degrees, and people enjoy the visual experience brought by a large visual angle and meanwhile want to effectively protect business confidentiality and personal privacy so as to avoid business loss or embarrassment caused by screen information leakage. In addition to the wide viewing angle requirement, there are many occasions where the display device is required to have a function of switching between wide and narrow viewing angles.

At present, the shutter shielding film is attached to the display screen to realize wide and narrow viewing angle switching, when peep prevention is needed, the shutter shielding film is utilized to shield the screen, so that the viewing angle can be reduced, but the shutter shielding film is additionally prepared in the mode, great inconvenience is caused to a user, one shutter shielding film can only realize one viewing angle, once the shutter shielding film is attached, the viewing angle is fixed in a narrow viewing angle mode, free switching cannot be performed between the wide viewing angle mode and the narrow viewing angle mode, and the peep prevention sheet can cause luminance reduction to influence the display effect.

In the prior art, a dimming box and a display panel are used for realizing switching between a wide viewing angle and a narrow viewing angle, the display panel is used for normal picture display, the dimming box is used for controlling viewing angle switching, the dimming box comprises a first substrate, a second substrate and a liquid crystal layer between the first substrate and the second substrate, viewing angle control electrodes on the first substrate and the second substrate apply a vertical electric field to liquid crystal molecules, so that the liquid crystal deflects towards the vertical direction, and a narrow viewing angle mode is realized. Switching between a wide viewing angle and a narrow viewing angle can be achieved by controlling the voltage on the viewing angle control electrode. However, the conventional dimming box can only realize wide-narrow viewing angle switching, and cannot realize local dimming and improve contrast of the display device.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide a display panel and a display device, so as to solve the problem that a dimming box in the prior art cannot realize wide-narrow view angle switching, regional dimming and high contrast simultaneously.

The aim of the utility model is achieved by the following technical scheme:

the utility model provides a display panel, which comprises a dimming box and a display control box which are sequentially stacked, wherein the dimming box is positioned on the light emitting side of the display control box, and the display control box is used for controlling gray scale display of pictures;

the dimming box comprises a counter substrate, a first array substrate, a polymer stabilized cholesteric liquid crystal layer and a plurality of dimming pixels, wherein the first array substrate is arranged opposite to the counter substrate, the polymer stabilized cholesteric liquid crystal layer is positioned between the counter substrate and the first array substrate, the dimming box is provided with the plurality of dimming pixels distributed in an array, a first pixel electrode is arranged in each dimming pixel of the first array substrate, a first common electrode matched with the first pixel electrode is arranged on the counter substrate, and the first pixel electrode and the first common electrode are used for controlling the polymer stabilized cholesteric liquid crystal layer to be switched between a transparent state and a scattering state;

the display control box is provided with a plurality of display pixels distributed in an array, and the dimming pixels are in one-to-one correspondence with the display pixels;

in the wide view angle mode, all the dimming pixels are transparent; when in a narrow viewing angle mode, part of the dimming pixels are in a transparent state, and the other part of the dimming pixels are in a scattering state, so that the dimming box is in a grating structure; in a high contrast mode, the dimming pixel corresponding to the display pixel in a bright state is in a transparent state, and the dimming pixel corresponding to the display pixel in a dark state is in a scattering state; in the local dimming mode, the dimming pixel corresponding to the bright state area is in a transparent state, and the dimming pixel corresponding to the dark state area is in a scattering state.

Further, a transparent retaining wall is arranged between the opposite substrate and the first array substrate, gaps between the opposite substrate and the first array substrate are partitioned into accommodating cavities corresponding to the dimming pixels one by the transparent retaining wall, and the polymer-stabilized cholesteric liquid crystal layer is arranged in the accommodating cavities.

Further, in the narrow viewing angle mode, the dimming pixels of at least one row of transparent states and the dimming pixels of scattering states are alternately arranged in a column direction;

or, in the narrow viewing angle mode, at least one column of the dimming pixels in a transparent state and at least one column of the dimming pixels in a scattering state are alternately arranged in a row direction;

or, in the narrow viewing angle mode, the dimming pixels of at least one transparent state and the dimming pixels of a scattering state are alternately arranged in a column direction and a row direction.

Further, a plurality of first scanning lines and a plurality of first data lines are arranged on the first array substrate, the first scanning lines and the first data lines are mutually insulated and crossed to define a plurality of dimming pixels, a first thin film transistor is arranged in each dimming pixel, and the first pixel electrode is electrically connected with the first scanning lines and the first data lines adjacent to the first thin film transistor through the first thin film transistor.

Further, the display control box is a liquid crystal display box, and comprises a color film substrate, a second array substrate arranged opposite to the color film substrate, and a liquid crystal layer arranged between the color film substrate and the second array substrate, wherein second pixel electrodes distributed in an array are arranged on the second array substrate, and a second common electrode matched with the second pixel electrodes is arranged on the color film substrate or the second array substrate.

Further, a plurality of second scan lines and a plurality of second data lines are arranged on the second array substrate, the second scan lines and the second data lines are mutually insulated and crossed to define a plurality of display pixels, a second thin film transistor is arranged in each display pixel, and the second pixel electrode is electrically connected with the second scan lines and the second data lines adjacent to the second thin film transistor through the second thin film transistor.

Further, a black matrix and a color resistance layer are arranged on the color film substrate, the color resistance layers correspond to the display pixels one by one, and the black matrix is used for mutually spacing a plurality of color resistance layers.

Further, a first polaroid is arranged on one side, facing the dimming box, of the display control box, a second polaroid is arranged on one side, far away from the dimming box, of the display control box, and a light transmission shaft of the first polaroid is mutually perpendicular to a light transmission shaft of the second polaroid.

Further, the display control box is a self-luminous display box.

The application also provides a display device comprising the display panel.

The utility model has the beneficial effects that: the first pixel electrode and the first public electrode control the stable cholesteric liquid crystal layer of the polymers corresponding to different dimming pixels to switch between a transparent state and a scattering state, so that the display panel can realize wide-narrow visual angle switching, high contrast ratio and regional dimming, can realize multiple functions only by one dimming box, and has the advantages of simple structure, thinner thickness and cost reduction.

Drawings

Fig. 1 is a schematic structural diagram of a display device in an initial state according to a first embodiment of the present utility model;

FIG. 2 is a schematic plan view of a first array substrate according to an embodiment of the present utility model;

FIG. 3 is a schematic plan view of a second array substrate according to an embodiment of the utility model;

FIG. 4 is a schematic plan view of a transparent retaining wall according to an embodiment of the utility model;

FIG. 5 is a schematic plan view of a color filter substrate according to an embodiment of the utility model;

FIG. 6 is a schematic diagram of a display device in a bright state with a wide viewing angle according to a first embodiment of the present utility model;

FIG. 7 is a schematic view of a display device in a dark state according to the first embodiment of the utility model;

fig. 8 is a schematic structural diagram of a display device in a local dimming mode according to a first embodiment of the present utility model;

fig. 9 is a schematic plan view of a display device in a local dimming mode according to an embodiment of the present utility model;

fig. 10 is a schematic structural diagram of a display device in a narrow viewing angle mode according to the first embodiment of the present utility model;

FIG. 11 is a schematic plan view of a display device in an up-down narrow viewing angle mode according to a first embodiment of the present utility model;

FIG. 12 is a schematic plan view of a display device in a left-right narrow viewing angle mode according to an embodiment of the present utility model;

FIG. 13 is a schematic plan view of a display device in an omni-directional narrow viewing angle mode according to an embodiment of the present utility model;

fig. 14 is a schematic structural diagram of a display device in an initial state according to a second embodiment of the present utility model;

FIG. 15 is a schematic view showing a planar structure of a display device according to the present utility model;

FIG. 16 is a schematic diagram showing a second planar structure of the display device according to the present utility model.

Detailed Description

In order to further describe the technical means and effects adopted by the utility model to achieve the preset aim, the following detailed description is given of the specific implementation, structure, characteristics and effects of the display panel and the display device according to the utility model by combining the accompanying drawings and the preferred embodiment, wherein:

example one

Fig. 1 is a schematic diagram of a display device in an initial state according to a first embodiment of the present utility model. FIG. 2 is a schematic plan view of a first array substrate according to an embodiment of the utility model. Fig. 3 is a schematic plan view of a second array substrate according to an embodiment of the utility model. Fig. 4 is a schematic plan view of a transparent retaining wall according to an embodiment of the utility model. Fig. 5 is a schematic plan view of a color film substrate according to an embodiment of the utility model.

As shown in fig. 1 to 5, a display panel according to a first embodiment of the present utility model includes a dimming box 10 and a display control box 20 stacked in order, where the dimming box 10 is located at a light emitting side of the display control box 20. The dimming box 10 is used for switching wide and narrow viewing angles, high contrast and local dimming, and the display control box 20 is used for controlling gray scale display of a picture.

The light modulation cell 10 includes a counter substrate 11, a first array substrate 12 disposed opposite to the counter substrate 11, and a polymer stabilized cholesteric liquid crystal layer 13 disposed between the counter substrate 11 and the first array substrate 12, wherein the polymer stabilized cholesteric liquid crystal layer 13 may be polymer stabilized cholesteric liquid crystal molecules (NW-PSCTLC), and in an initial state, the polymer stabilized cholesteric liquid crystal layer 13 is a medium having a uniform refractive index, and incident light in all directions is transmitted, and the polymer stabilized cholesteric liquid crystal layer 13 is in a transparent state.

The dimming box 10 has a plurality of dimming pixels P1 distributed in an array, the display control box 20 has a plurality of display pixels P2 distributed in an array, and the dimming pixels P1 and the display pixels P2 are in one-to-one correspondence. The first array substrate 12 is provided with a first pixel electrode 121 in each dimming pixel P1, and the opposite substrate 11 is provided with a first common electrode 111 matched with the first pixel electrode 121, wherein the first pixel electrode 121 and the first common electrode 111 are used for controlling the cholesteric liquid crystal layer 13 stabilized by the polymer to switch between a transparent state and a scattering state. When a corresponding voltage is applied to the first pixel electrode 121, the polymer stabilized cholesteric liquid crystal layer 13 has a multi-domain focal conic structure, becomes an optical non-uniform medium, has a scattering effect on light, and can control the pressure difference between the first pixel electrode 121 and the first common electrode 111 to control the haze of the polymer stabilized cholesteric liquid crystal layer 13.

As shown in fig. 2, the first array substrate 12 is provided with a plurality of first scan lines 101, a plurality of first data lines 102, and a plurality of first thin film transistors 103, and the first array substrate 12 is provided with a first pixel electrode 121 and a first thin film transistor 103 in a region corresponding to each dimming pixel P1. The first pixel electrode 121 is electrically connected to the first scan line 101 and the first data line 102 adjacent to the first thin film transistor 103 through the first thin film transistor 103. The first thin film transistor 103 includes a first gate electrode, a first active layer, a first drain electrode, and a first source electrode, where the first gate electrode and the first scan line 101 are located on the same layer and electrically connected, the first gate electrode and the first active layer are isolated by an insulating layer, the first source electrode is electrically connected to the first data line 102, and the first drain electrode and the first pixel electrode 121 are electrically connected by a contact hole. The first pixel electrode 121 is a block electrode corresponding to the dimming pixel P1, and the first common electrode 111 is a planar electrode covering the entire surface of the counter substrate 11.

As shown in fig. 4, a transparent retaining wall 14 is disposed between the opposite substrate 11 and the first array substrate 12, the transparent retaining wall 14 separates the gap between the opposite substrate 11 and the first array substrate 12 into accommodating cavities corresponding to the dimming pixels P1 one by one, and the polymer-stabilized cholesteric liquid crystal layer 13 is disposed in the accommodating cavities, so as to avoid mutual interference between the polymer-stabilized cholesteric liquid crystal layers 13 between two adjacent dimming pixels P1.

In this embodiment, the display control box 20 is a liquid crystal display box, and the display control box 20 includes a color film substrate 21, a second array substrate 22 disposed opposite to the color film substrate 21, and a liquid crystal layer 23 disposed between the color film substrate 21 and the second array substrate 22. The liquid crystal layer 23 preferably employs positive liquid crystal molecules, i.e., liquid crystal molecules having positive dielectric anisotropy. In the initial state, the positive liquid crystal molecules in the liquid crystal layer 23 are aligned parallel to the color film substrate 21 and the second array substrate 22, and the alignment direction of the positive liquid crystal molecules on the side close to the color film substrate 21 is parallel or antiparallel to the alignment direction of the positive liquid crystal molecules on the side close to the second array substrate 22. Of course, in other embodiments, the liquid crystal layer 23 may also use negative liquid crystal molecules, and the negative liquid crystal molecules in the liquid crystal layer 23 may be aligned perpendicular to the color film substrate 21 and the second array substrate 22, i.e. in an alignment manner similar to the VA display mode.

As shown in fig. 3, the second array substrate 22 is provided with a plurality of second scan lines 201, a plurality of second data lines 202, and a plurality of second thin film transistors 203, and the second array substrate 22 is provided with a second pixel electrode 222 and a second thin film transistor 203 in a region corresponding to each display pixel P2. The second pixel electrode 222 is electrically connected to the second scan line 201 and the second data line 202 adjacent to the second thin film transistor 203 through the second thin film transistor 203. The second thin film transistor 203 includes a second gate electrode, a second active layer, a second drain electrode, and a second source electrode, where the second gate electrode is located on the same layer as the second scan line 201 and is electrically connected to the second scan line, the second gate electrode is isolated from the second active layer by an insulating layer, the second source electrode is electrically connected to the second data line 202, and the second drain electrode is electrically connected to the second pixel electrode 222 by a contact hole.

As shown in fig. 5, the color film substrate 21 is provided with color resist layers 212 arranged in an array and a black matrix 211 separating the color resist layers 212, the color resist layers 212 are in one-to-one correspondence with the display pixels P2, and the color resist layers 212 include red (R), green (G) and blue (B) color resist materials and form red (R), green (G) and blue (B) sub-pixels correspondingly. Wherein the black matrix 211 corresponds up and down to the pattern of the transparent barrier wall 14.

As shown in fig. 1, in the present embodiment, a second common electrode 221 is further disposed on a side of the second array substrate 22 facing the liquid crystal layer 23, and the second common electrode 221 and the second pixel electrode 222 are located on different layers and are insulated and isolated by an insulating layer. The second common electrode 221 may be located above or below the second pixel electrode 222 (the second common electrode 221 is shown below the second pixel electrode 222 in fig. 1). Preferably, the second common electrode 221 is a planar electrode disposed entirely, and the second pixel electrode 222 is a block electrode disposed entirely within each pixel cell or a slit electrode having a plurality of electrode bars to form a fringe field switching pattern (Fringe Field Switching, FFS). Of course, in other embodiments, the second pixel electrode 222 and the second common electrode 221 may be located at the same layer, but they are insulated from each other, each of the second pixel electrode 222 and the second common electrode 221 may include a plurality of electrode bars, and the electrode bars of the second pixel electrode 222 and the electrode bars of the second common electrode 221 are alternately arranged with each other to form an In-Plane Switching (IPS). Alternatively, in other embodiments, the second pixel electrode 222 is disposed on the side of the second array substrate 22 facing the liquid crystal layer 23, and the second common electrode 221 is disposed on the side of the color film substrate 21 facing the liquid crystal layer 23 to form a TN mode or a VA mode, and other descriptions of the TN mode and the VA mode are omitted herein.

Further, a first polarizer 31 is disposed on a side of the display control box 20 facing the light modulation box 10, a second polarizer 32 is disposed on a side of the display control box 20 facing away from the light modulation box 10, and a light transmission axis of the first polarizer 31 is perpendicular to a light transmission axis of the second polarizer 32.

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

The present embodiment also provides a display device, including the backlight module 40 and the display panel described above, where the display panel is disposed on the light emitting side of the backlight module 40, and the backlight module 40 is used for providing a backlight source for the liquid crystal display device.

Preferably, the backlight module 40 adopts a collimated backlight (CBL, collimated backlight) mode, which can collect light to ensure display effect.

The backlight module 40 includes a backlight 41, a brightness enhancement film 42 and a peep-proof layer 43, wherein the brightness enhancement film 42 is used for improving the light utilization rate so as to increase the brightness of the light emitted by the backlight module 40, the peep-proof layer 43 is arranged on the light emitting side of the backlight 41, and the peep-proof layer 43 is used for reducing the range of the light emitting angle. The peep-proof layer 43 is a micro shutter structure, which can block light with a larger incident angle, so that light with a smaller incident angle passes through the shutter structure, and the angle range of the light passing through the peep-proof layer 43 is reduced. The peep-proof layer 43 comprises a plurality of parallel light-resisting walls and light holes between two adjacent light-resisting walls, and light-absorbing materials are arranged on two sides of the light-resisting walls. Of course, the backlight 41 may be a light-collecting type backlight, so that the peep-proof layer 43 is not required, but the light-collecting type backlight is more expensive than a conventional backlight. The backlight module 40 may be a side-in type backlight module or a direct type backlight module.

Fig. 6 is a schematic structural diagram of the display device in a bright state with a wide viewing angle according to the first embodiment of the utility model. As shown in fig. 6, in the wide viewing angle mode, a common voltage signal is applied to the first common electrode 111 and all the first pixel electrodes 121, or no voltage signal is applied, no vertical electric field is formed between the first common electrode 111 and the first pixel electrodes 121, so that the polymer stabilized cholesteric liquid crystal layer 13 is a medium with uniform refractive index, and incident light in all directions can be transmitted, at this time, all the polymer stabilized cholesteric liquid crystal layers 13 corresponding to all the dimming pixels P1 are transparent, and the light-adjusting box 10 does not change the light emission angle, so as to display in wide viewing angle.

Fig. 7 is a schematic view of a display device in a dark state according to a first embodiment of the utility model. As shown in fig. 6 and 7, in the high contrast mode, for the bright display pixel P2, the common voltage signal is applied to the first common electrode 111 and the first pixel electrode 121 corresponding to the bright display pixel P2, or the voltage signal is not applied, and the vertical electric field is not formed between the first common electrode 111 and the first pixel electrode 121 corresponding to the bright display pixel P2, so that the cholesteric liquid crystal layer 13 with stable polymer corresponding to the bright display pixel P2 is a medium with uniform refractive index, and incident light in all directions can be transmitted, and at this time, the dimming pixel P1 corresponding to the bright display pixel P2 is in a transparent state. For the dark display pixel P2, a first voltage signal (greater than 6V) is applied to the first pixel electrode 121 corresponding to the dark display pixel P2, and a voltage difference between the first common electrode 111 and the first pixel electrode 121 corresponding to the dark display pixel P2 is large and a vertical electric field is formed, so that the cholesteric liquid crystal layer 13 with stable polymer corresponding to the dark display pixel P2 is in a multi-domain focal conic structure and becomes an optical non-uniform medium, and at this time, the dimming pixel P1 corresponding to the dark display pixel P2 is in a scattering state, thereby reducing light transmittance, reducing brightness of the dark display pixel P2 and realizing high contrast display.

Fig. 8 is a schematic diagram of a display device in a local dimming mode according to an embodiment of the present utility model. Fig. 9 is a schematic plan view of a display device in a local dimming mode according to an embodiment of the present utility model. As shown in fig. 8 and 9, in the local dimming mode, for the bright state region, a common voltage signal is applied to the first common electrode 111 and the first pixel electrode 121 corresponding to the bright state region, or no voltage signal is applied, and no vertical electric field is formed between the first common electrode 111 and the first pixel electrode 121 corresponding to the bright state region, so that the cholesteric liquid crystal layer 13 with stable polymer corresponding to the bright state region is a medium with uniform refractive index, and incident light in all directions can be transmitted, and at this time, the dimming pixel P1 corresponding to the bright state region is in a transparent state. For the dark state region, a first voltage signal (greater than 6V) is applied to the first pixel electrode 121 corresponding to the dark state region, and a voltage difference between the first common electrode 111 and the first pixel electrode 121 corresponding to the dark state region is large and a vertical electric field is formed, so that the cholesteric liquid crystal layer 13 with stable polymer corresponding to the dark state region is in a multi-domain focal conic structure and becomes an optical non-uniform medium, at this time, the dimming pixel P1 corresponding to the dark state region is in a scattering state, thereby reducing the transmittance of light, reducing the brightness of the dark state region and realizing regional dimming display. It will be appreciated that in the area where the light is reduced, the dimming pixel P1 corresponding to the bright display pixel P2 and the dark display pixel P2 is in a scattering state.

Fig. 10 is a schematic structural diagram of a display device in a narrow viewing angle mode according to the first embodiment of the utility model. In the narrow viewing angle mode, the partial dimming pixel P1 is in a transparent state, and the other partial dimming pixel P1 is in a scattering state, so that the dimming box 10 has a grating structure, and the emission range of the light after passing through the dimming box 10 is reduced. The transparent dimming pixel P1 applies a common voltage signal or does not apply a voltage signal to the first common electrode 111 and the first pixel electrode 121 corresponding to the transparent dimming pixel P1, and no vertical electric field is formed between the first common electrode 111 and the first pixel electrode 121 corresponding to the transparent dimming pixel P1, so that the cholesteric liquid crystal layer 13 with stable polymer corresponding to the transparent dimming pixel P1 is a medium with uniform refractive index, and incident light in all directions can be transmitted. For the scattering-state dimming pixel P1, a first voltage signal (greater than 6V) is applied to the first pixel electrode 121 corresponding to the scattering-state dimming pixel P1, and a voltage difference between the first common electrode 111 and the first pixel electrode 121 corresponding to the scattering-state dimming pixel P1 is large and a vertical electric field is formed, so that the cholesteric liquid crystal layer 13 with stable polymer corresponding to the scattering-state dimming pixel P1 is in a multi-domain focal conic structure, becomes an optical non-uniform medium, and has a scattering effect on light.

Fig. 11 is a schematic plan view of a display device in an up-down narrow viewing angle mode according to a first embodiment of the present utility model. As shown in fig. 11, in the up-down narrow viewing angle mode, at least one row of the light-dimming pixels P1 in a transparent state and at least one row of the light-dimming pixels P1 in a scattering state are alternately arranged in a column direction. The dimming pixels P1 in a transparent state and the dimming pixels P1 in a scattering state are alternately arranged along the column direction in fig. 11, so that the dimming box 10 has a grating structure, thereby narrowing the emission range of light in the up-down direction after passing through the dimming box 10.

Fig. 12 is a schematic plan view of a display device in a left-right narrow viewing angle mode according to the first embodiment of the present utility model. As shown in fig. 12, in the left-right narrow viewing angle mode, at least one column of the light-dimming pixels P1 in a transparent state and the light-dimming pixels P1 in a scattering state are alternately arranged in the row direction. In fig. 12, a row of transparent dimming pixels P1 and a row of scattering dimming pixels P1 are alternately arranged along the row direction, so that the dimming box 10 has a grating structure, and the emission range of the light beam in the left-right direction after passing through the dimming box 10 is reduced.

Fig. 13 is a schematic plan view of a display device in an omni-directional narrow viewing angle mode according to a first embodiment of the present utility model. As shown in fig. 13, in the all-direction narrow viewing angle mode (four-direction peep preventing mode), at least one light-adjusting pixel P1 in a transparent state and a light-adjusting pixel P1 in a scattering state are alternately arranged in the column direction and the row direction. In fig. 13, the dimming pixels P1 in a transparent state and the dimming pixels P1 in a scattering state are alternately arranged along the column direction and the row direction, so that the dimming box 10 has a grating structure, and the emission range of the light rays in the left-right direction and the up-down direction after passing through the dimming box 10 is reduced.

Wherein, the electric signals on the first pixel electrode 121 in different areas can be controlled according to the first scanning line 101 and the first data line 102, so as to realize any switching among a wide view angle mode, a high contrast mode, a regional dimming mode and a plurality of narrow view angle modes.

Example two

Fig. 14 is a schematic view of a display device in an initial state according to a second embodiment of the present utility model. As shown in fig. 14, the display panel and the display device provided in the second embodiment of the present utility model are substantially the same as those in the first embodiment (fig. 1 to 13), except that in the present embodiment:

the display control box 20 is a self-luminous display box. The display control box 20 includes a first substrate 24, a second substrate 26 disposed opposite to the first substrate 24, and an organic light emitting layer 25 between the first substrate 24 and the second substrate 26. The first substrate 24 is an array substrate, anodes distributed in an array are disposed on the first substrate 24, cathodes matched with the anodes are disposed on the second substrate 26, and the voltage between the anodes and the cathodes is controlled to control the organic light emitting layer 25 to emit light. For other structures of the self-luminous display box, please refer to the prior art, and the description thereof is omitted herein.

In this embodiment, a display device is also provided, which is substantially the same as the display device in the first embodiment, except that in this embodiment, since the display control box 20 is a self-luminous display box, the display device does not need to be provided with the backlight module 40.

Those skilled in the art will understand that the other structures and working principles of the present embodiment are the same as those of the first embodiment, and will not be described herein.

Fig. 15 is a schematic view of a display device according to the present utility model, and fig. 16 is a schematic view of a display device according to the present utility model. Referring to fig. 15 and 16, the display device is provided with a dimming mode switching key 50 for a user to issue a viewing angle switching request to the display device. The dimming mode switching key 50 may be a physical key (as shown in fig. 15), or may be a software control or Application (APP) to implement a switching function (as shown in fig. 16, for example, by setting a wide and narrow viewing angle through a slider bar). When the user needs to switch among the wide viewing angle mode, the high contrast mode, the regional dimming mode and the multiple narrow viewing angle modes, the dimming mode switching key 50 is operated to send a dimming mode switching request to the display device, and finally the driving chip 60 controls the electric signal applied to the first pixel electrode 121, so that the display device can realize the switching among the wide viewing angle mode, the high contrast mode, the regional dimming mode and the multiple narrow viewing angle modes. When the wide view angle mode is switched, the driving method adopts the driving method corresponding to the wide view angle mode, when the high contrast mode is switched, the driving method adopts the driving method corresponding to the high contrast mode, when the local dimming mode is switched, the driving method adopts the driving method corresponding to the local dimming mode, and when the narrow view angle mode is switched, the driving method adopts the driving method corresponding to the narrow view angle mode. Therefore, the display device provided by the embodiment of the utility model has stronger operation flexibility and convenience, and achieves the aim of integrating entertainment video and privacy confidentiality.

In this document, terms such as up, down, left, right, front, rear, etc. are defined by the positions of the structures in the drawings and the positions of the structures with respect to each other, for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the protection sought herein. It should also be understood that the terms "first" and "second," etc., as used herein, are used merely for distinguishing between names and not for limiting the number and order.

The present utility model is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims (10)

1. The display panel is characterized by comprising a dimming box (10) and a display control box (20) which are sequentially stacked, wherein the dimming box (10) is positioned on the light emitting side of the display control box (20), and the display control box (20) is used for controlling gray scale display of a picture;

the light regulating box (10) comprises a counter substrate (11), a first array substrate (12) arranged opposite to the counter substrate (11) and a polymer stabilized cholesteric liquid crystal layer (13) arranged between the counter substrate (11) and the first array substrate (12), the light regulating box (10) is provided with a plurality of light regulating pixels (P1) distributed in an array, the first array substrate (12) is provided with a first pixel electrode (121) in each light regulating pixel (P1), the counter substrate (11) is provided with a first common electrode (111) matched with the first pixel electrode (121), and the first pixel electrode (121) and the first common electrode (111) are used for controlling the polymer stabilized cholesteric liquid crystal layer (13) to be switched between a transparent state and a scattering state;

the display control box (20) is provided with a plurality of display pixels (P2) distributed in an array, and the dimming pixels (P1) are in one-to-one correspondence with the display pixels (P2);

in the wide viewing angle mode, all the dimming pixels (P1) are in a transparent state; when in a narrow viewing angle mode, part of the dimming pixels (P1) are in a transparent state, and the other part of the dimming pixels (P1) are in a scattering state, so that the dimming box (10) is in a grating structure; in the high contrast mode, the dimming pixel (P1) corresponding to the display pixel (P2) in a bright state is in a transparent state, and the dimming pixel (P1) corresponding to the display pixel (P2) in a dark state is in a scattering state; in the local dimming mode, the dimming pixel (P1) corresponding to the bright state region is in a transparent state, and the dimming pixel (P1) corresponding to the dark state region is in a scattering state.

2. A display panel according to claim 1, characterized in that a transparent retaining wall (14) is provided between the counter substrate (11) and the first array substrate (12), the transparent retaining wall (14) spacing the gap between the counter substrate (11) and the first array substrate (12) into a receiving cavity in one-to-one correspondence with the dimming pixel (P1), and the polymer stabilized cholesteric liquid crystal layer (13) is provided in the receiving cavity.

3. A display panel according to claim 1, characterized in that in the narrow viewing angle mode, at least one row of the dimming pixels (P1) in a transparent state and at least one row of the dimming pixels (P1) in a scattering state are alternately arranged in a column direction;

or, in a narrow viewing angle mode, at least one column of the dimming pixels (P1) in a transparent state and the dimming pixels (P1) in a scattering state are alternately arranged in a row direction;

or, in the narrow viewing angle mode, the dimming pixels (P1) of at least one transparent state and the dimming pixels (P1) of a scattering state are alternately arranged in a column direction and a row direction.

4. The display panel according to claim 1, wherein a plurality of first scan lines (101) and a plurality of first data lines (102) are disposed on the first array substrate (12), the plurality of first scan lines (101) and the plurality of first data lines (102) are mutually insulated and cross to define a plurality of dimming pixels (P1), a first thin film transistor (103) is disposed in each dimming pixel (P1), and the first pixel electrode (121) is electrically connected with the first scan lines (101) and the first data lines (102) adjacent to the first thin film transistor (103) through the first thin film transistor (103).

5. The display panel according to any one of claims 1 to 4, wherein the display control box (20) is a liquid crystal display box, the display control box (20) includes a color film substrate (21), a second array substrate (22) disposed opposite to the color film substrate (21), and a liquid crystal layer (23) disposed between the color film substrate (21) and the second array substrate (22), second pixel electrodes (222) distributed in an array are disposed on the second array substrate (22), and a second common electrode (221) matched with the second pixel electrodes (222) is disposed on the color film substrate (21) or the second array substrate (22).

6. The display panel according to claim 5, wherein a plurality of second scan lines (201) and a plurality of second data lines (202) are disposed on the second array substrate (22), the plurality of second scan lines (201) and the plurality of second data lines (202) are mutually insulated and cross to define a plurality of display pixels (P2), a second thin film transistor (203) is disposed in each display pixel (P2), and the second pixel electrode (222) is electrically connected to the second scan lines (201) and the second data lines (202) adjacent to the second thin film transistor (203) through the second thin film transistor (203).

7. The display panel according to claim 5, wherein a black matrix (211) and a color resist layer (212) are disposed on the color film substrate (21), the color resist layer (212) corresponds to the display pixels (P2) one by one, and the black matrix (211) spaces a plurality of the color resist layers (212) from each other.

8. The display panel according to claim 5, wherein a first polarizer (31) is disposed on a side of the display control box (20) facing the light adjusting box (10), a second polarizer (32) is disposed on a side of the display control box (20) away from the light adjusting box (10), and a light transmission axis of the first polarizer (31) is perpendicular to a light transmission axis of the second polarizer (32).

9. A display panel according to any one of claims 1-4, characterized in that the display control box (20) is a self-luminous display box.

10. A display device comprising a display panel according to any one of claims 1-9.