CN115480425A - Display device - Google Patents

Abstract

The present application proposes a display device; the display panel comprises a display panel, a first light modulation layer arranged on the light emergent side of the display panel and a second light modulation layer arranged on one side, far away from the display panel, of the first light modulation layer, wherein the second light modulation layer comprises a first 1/4 wave plate, a semi-transparent semi-reflective film, a lens, a second 1/4 wave plate, a reflective polarizer and a second polarizer which are sequentially arranged, the first light modulation layer comprises a plurality of modulation blocks corresponding to different regions of the display panel, the absorption axes of at least two modulation blocks are vertically arranged, or the phase delay difference of at least two modulation blocks is 90 degrees; this application sets up first light modulation layer and second light modulation layer through the light-emitting side at display panel, makes display panel's emergent light become the line polarisation that propagates through two kinds of light paths and forms two virtual image planes to realize many focal planes and show, the overall structure of this application is compact moreover, holistic volume is less, and response speed is faster, and many focal planes display effect is better.

Description

Display device

Technical Field

The application relates to the field of display devices, in particular to a display device.

Background

Virtual Reality (VR) technology is a way to enlarge and project a virtual scene, and can enhance the sense of immersion. The current VR display equipment realizes a 3D function based on parallax, only one image plane is usually generated, and a plurality of image distance focusing adjusting signals of a brain based on a three-dimensional image received by a human eye optic nerve conflict with the only image plane position actually focused by human eyes, so that eye fatigue and dizziness, namely vergence conflict, can occur when the human eyes continuously watch a dynamic 3D image.

At this stage, multi-focal-plane display can be realized by increasing the number of focal planes, for example, by using a multi-plane display or a zoom lens, and using spatial multiplexing. However, the near-eye display device increases in volume with the increase in the number of multi-plane displays, and the zoom lens has complicated related structural components and a slow response speed, which affects the multi-focal-plane display effect.

Disclosure of Invention

The application provides a display device to improve the great or relevant structure complicacy of volume that exists when current near-to-eye display device carries out the display of many focal planes, and then influence the technical problem of many focal planes display effect.

In order to solve the technical problem, the technical scheme provided by the application is as follows:

the application provides a display device, including:

a display panel;

the first light modulation layer is arranged on the light emergent side of the display panel;

the second light modulation layer is arranged on one side, far away from the display panel, of the first light modulation layer and comprises a first 1/4 wave plate, a semi-transparent and semi-reflective film, a lens, a second 1/4 wave plate, a reflective polarizer and a third polarizer, wherein the first 1/4 wave plate is arranged on one side, far away from the display panel, of the first light modulation layer, the semi-transparent and semi-reflective film is arranged on the first 1/4 wave plate, the lens is arranged on one side, far away from the first light modulation layer, of the lens, the second 1/4 wave plate is arranged on one side, far away from the semi-transparent and semi-reflective film, of the second 1/4 wave plate, the reflective polarizer is arranged on one side, far away from the second 1/4 wave plate, of the reflective polarizer and the third polarizer is arranged on one side, far away from the second 1/4 wave plate, of the reflective polarizer;

the first light modulation layer comprises a plurality of modulation blocks corresponding to different areas of the display panel, the absorption axes of at least two modulation blocks are vertically arranged, or the phase delay difference of at least two modulation blocks is 90 degrees.

In the display device of the present application, the first light modulation layer includes a first polarizer disposed on a light emitting surface of the display panel;

the first polarizer comprises a plurality of modulation blocks corresponding to different areas of the display panel, and the absorption axes of at least two modulation blocks are arranged vertically.

In the display device of the present application, the display device further includes a second polarizer located on a side of the display panel away from the first polarizer;

the second polarizer comprises a plurality of modulation regions corresponding to the first polarizer, and the absorption axes in the modulation regions are perpendicular to the absorption axes of the corresponding modulation blocks.

In the display device of the application, the first light modulation layer comprises a first polaroid arranged on the light-emitting surface of the display panel and a phase delay layer arranged on one side, far away from the display panel, of the first polaroid;

wherein the phase delay layer comprises a plurality of modulation blocks corresponding to different regions of the display panel, and the phase delay difference of at least two modulation blocks is 90 degrees.

In the display device of the present application, the phase retardation layer includes a liquid crystal coating layer disposed on a side of the first polarizer away from the display panel, the liquid crystal coating layer including a plurality of liquid crystal molecules;

wherein the pretilt angles of the liquid crystal molecules in at least two of the modulation blocks are different by 90 degrees.

In the display device of the present application, the phase retardation layer includes a first electrode layer, a second electrode layer, and a liquid crystal deflection layer disposed between the first electrode layer and the second electrode layer;

the first electrode layer and the second electrode layer comprise a plurality of transparent electrodes, and at least two transparent electrodes in the first electrode layer and the second electrode layer are independently connected with a voltage input end.

In the display device of the present application, the deflection frequency of the liquid crystal molecules in the liquid crystal deflection layer is greater than or equal to 30Hz and less than or equal to 240Hz.

In the display device of the present application, the modulation blocks include a first modulation block and a second modulation block, and absorption axes of the first modulation block and the second modulation block are arranged perpendicularly or a phase delay difference is 90 °;

the first modulation blocks and the second modulation blocks are arranged along a first direction, and the first modulation blocks and the second modulation blocks are alternately arranged along a second direction, wherein the second direction is perpendicular to the first direction.

In the display device of the present application, the modulation blocks include a first modulation block and a second modulation block, and absorption axes of the first modulation block and the second modulation block are arranged perpendicularly or a phase delay difference is 90 °;

the first modulation blocks and the second modulation blocks are alternately arranged in a first direction and a second direction, and the second direction is perpendicular to the first direction.

In the display device of the present application, the modulation blocks include a first modulation block and a second modulation block, and absorption axes of the first modulation block and the second modulation block are arranged perpendicularly or a phase delay difference is 90 °;

the plurality of first modulation blocks correspond to a central area of the display panel, and the plurality of second modulation blocks correspond to a peripheral area of the display panel, which is located at the periphery of the central area.

Advantageous effects

This application sets gradually first light modulation layer and second light modulation layer through the light-emitting side at display panel, makes display panel's emergent light through first light modulation layer with the modulation back of second light modulation, become with the modulation block corresponds and passes through the line polarisation of two kinds of light path propagation and gets into people's eye formation of image, because the line polarisation that gets into people's eye has two kinds of propagation path, makes the line polarisation that gets into people's eye through two kinds of propagation path do not coincide at the image plane that people's eye becomes, has two virtual image planes promptly, thereby realize the multi-focus face demonstration, produce the degree of depth sense and the third dimension of different levels focal plane, can effectively promote user's three-dimensional stereo perception sense and solve the problem of convergence conflict, moreover the overall structure of this application is compact, holistic volume is less, response speed is faster, and the multi-focus face display effect is better.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a first overall structure of a display device according to the present application;

FIG. 2 is a schematic diagram of a second overall structure of a display device according to the present application;

FIG. 3 is a schematic view of a first structure of a first light modulating layer according to the present disclosure;

FIG. 4 is a schematic diagram of a second structure of a first light modulation layer according to the present disclosure;

FIG. 5 is a schematic diagram of a first structure of a phase retardation layer according to the present application;

FIG. 6 is a schematic diagram of a second structure of a phase retardation layer according to the present application;

FIG. 7 is a schematic diagram illustrating the variation of the phase delay period of a modulation region in the phase delay layer according to the present application;

fig. 8 is a first arrangement of the first modulation block and the second modulation block of the present application;

FIG. 9 is a second arrangement of the first modulation block and the second modulation block of the present application;

fig. 10 is a third arrangement of the first modulation block and the second modulation block of the present application.

Description of the reference numerals:

100. a display panel;

200. a first light modulation layer; 210. a first modulation block; 220. a second modulation block; 230. a first polarizer; 240. a phase retardation layer; 241. an alignment coating; 242. a liquid crystal coating; 243. a liquid crystal deflection layer; 244. a first electrode layer; 245. a second electrode layer; 246. a transparent electrode; 247. a transparent film layer;

300. a second light modulation layer; 310. a first 1/4 wave plate; 320. a semi-permeable and semi-reflective film; 330. a lens; 340. a second 1/4 wave plate; 350. a reflective polarizer; 360. a third polarizer;

400. a second polarizer;

500. a backlight module;

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.

Virtual Reality (VR) technology is a way to enlarge and project a virtual scene, and can enhance the sense of immersion. The current VR display equipment realizes a 3D function based on parallax, only one image plane is usually generated, and a plurality of image distance focusing adjusting signals of a brain based on a three-dimensional image received by a human eye optic nerve conflict with the only image plane position actually focused by human eyes, so that eye fatigue and dizziness, namely vergence conflict, can occur when the human eyes continuously watch a dynamic 3D image.

At this stage, multi-focal-plane display can be realized by increasing the number of focal planes, for example, by using a multi-plane display or a zoom lens, and using spatial multiplexing. However, the near-eye display device increases in volume with the increase in the number of multi-plane displays, and the zoom lens has complicated related structural components and a slow response speed, which affects the multi-focal-plane display effect. The present application proposes the following solutions based on the above technical problems.

Referring to fig. 1 to 10, the present application provides a display device including a display panel 100, a first light modulation layer 200 disposed on a light exit side of the display panel 100, and a second light modulation layer 300 disposed on a side of the display panel 100 away from the first light modulation layer 200. The second light modulation layer 300 is including set up in first light modulation layer 200 keeps away from the first 1/4 wave plate 310 of display panel 100 one side, set up in first 1/4 wave plate 310 keeps away from the half-transparent and half-reflective film 320 of first light modulation layer 200, set up in half-transparent and half-reflective film 320 keeps away from the lens 330 of first light modulation layer 200, set up in lens 330 keeps away from the second 1/4 wave plate 340 of half-transparent and half-reflective film 320 one side, set up in second 1/4 wave plate 340 keeps away from the reflection polaroid 350 of lens 330 one side and set up in reflection polaroid 350 keeps away from the third polaroid 360 of second 1/4 wave plate 340 one side. The first light modulation layer 200 includes a plurality of modulation blocks corresponding to different regions of the display panel 100, at least two of the modulation blocks have absorption axes thereof vertically disposed, or at least two of the modulation blocks have a phase delay difference of 90 °

This application sets gradually first light modulation layer 200 and second light modulation layer 300 through the light-emitting side at display panel 100, makes display panel 100's emergent light process absorption axis mutually perpendicular or phase delay difference are behind 90 at least two modulation blocks in the first light modulation layer 200, become polarization direction vertically first line polarization and second line polarization respectively. The first and second linearly polarized lights are respectively changed into first and second circularly polarized lights after passing through the first 1/4 wave plate 310, and the first and second circularly polarized lights are transmitted through the transflective film 320 and the lens 330 and respectively changed back into the first and second linearly polarized lights after passing through the second 1/4 wave plate 340. Wherein, the first linear polarized light penetrates through the reflective polarizer 350 and the second polarizer 400 and enters human eyes to form a first virtual image surface; the second linear polarized light is reflected by the reflective polarizer 350 back to the second 1/4 wave plate 340 and then changed into the first circular polarized light, and after the first circular polarized light is incident to the lens 330 and the transflective film 320, a part of the first circular polarized light is directly transmitted without participating in imaging; the other part of the first circularly polarized light is reflected by the transflective film 320 and changes its handedness to become a second circularly polarized light, which is converted into a first linearly polarized light perpendicular to the polarization direction of the second linearly polarized light after passing through the second 1/4 wave plate 340 again, and the first linearly polarized light can transmit the reflective polarizer 350 and the second polarizer 400, and then reach human eyes and form a second virtual image plane different from the first virtual image plane.

In this embodiment, the emergent light of display panel 100 passes through first light modulation layer 200 with the modulation back of second light modulation becomes with the modulation block corresponds and passes through the line polarization of two kinds of light path propagation and gets into people's eye formation of image, because the line polarization that gets into people's eye has two kinds of propagation paths, make the image plane that the line polarization that gets into people's eye through two kinds of propagation paths is not coincident in people's eye, there are two virtual image planes promptly, thereby realize the multi-focal plane and show, produce the degree of depth sensation and the third dimension of different levels focal plane, can effectively promote user's three-dimensional stereo impression and solve the problem of convergence conflict, and the overall structure of this application is compact, holistic volume is less, response speed is faster, the multi-focal plane display effect is better.

The technical solution of the present application will now be described with reference to specific embodiments. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.

Referring to fig. 1 and fig. 2, in the display device of the present application, the display panel 100 may be an active light emitting display panel, or a passive light emitting display panel implemented by a backlight module 500. The active light emitting display panel 100 may include an OLED display panel, an LED display panel, a Mini-LED display panel, a Micro-LED display panel, etc., and the passive light emitting display panel 100 may be a liquid crystal display panel, etc.

In this embodiment, work as when display panel 100 is active luminous display panel, display panel 100's the side of being shaded from the sun need not to set up other polarisation rete, the emergent light that display panel 100 initiative was sent is through first light modulation layer 200 with can become two kinds of line polarization that the polarization direction is the same, propagation path is different behind the second light modulation layer 300 to form two virtual image planes that do not coincide in people's eye, realize multi-level three-dimensional stereoscopic display.

In the present embodiment, the first light modulation layer 200 may include, but is not limited to, a first polarizer 230.

Referring to fig. 2, in the present embodiment, when the display panel 100 is a passive light-emitting display panel, that is, the display panel 100 is a liquid crystal display panel, the backlight module 500 located at a side of the display panel 100 away from the light-emitting side is required to implement light-emitting display. At this time, the side of the display panel 100 far away from the light-emitting side is correspondingly provided with the second polarizer 400, the second polarizer 400 needs to be correspondingly provided with a plurality of modulation regions opposite to the modulation blocks, and the absorption axis of the second polarizer 400 in each modulation region needs to be perpendicular to the corresponding absorption axis of the modulation block, so that the normal light-emitting display of the liquid crystal display panel 100 can be realized.

Referring to fig. 3 to 4, in the display device of the present application, the first light modulation layer 200 may be a single-layer film structure or a composite structure of multiple layers of films.

Referring to fig. 3, in the present embodiment, the first light modulation layer 200 may be the first polarizer 230 disposed on a light emitting surface of the display panel 100. At this time, the plurality of modulation blocks are a plurality of sub-regions having equal or unequal areas, where the absorption axis of the first polarizer 230 in at least two sub-regions is disposed vertically, that is, the absorption axis of the first polarizer 230 may be disposed in a patterned manner.

At this moment, emergent light of the display panel 100 passes through after two at least subregions of absorption axis mutually perpendicular on the first polaroid 230 become two kinds of line polarization light of polarization direction vertically, two kinds of line polarization light warp behind the modulation of second light modulation layer 300, become two kinds of line polarization light that the polarization direction is the same but propagate along different routes to form two virtual image planes at the human eye, realize multi-level multi-focal plane three-dimensional stereoscopic display.

Referring to fig. 4, in the present embodiment, the first light modulation layer 200 may also be a multilayer film structure, and specifically, the first light modulation layer 200 may be a composite structure of a first polarizer 230 disposed on a light emitting surface of the display panel 100 and a phase retardation layer 240 disposed on the first polarizer 230. At this time, the absorption axes of the first polarizers 230 are all arranged in parallel along the same direction, and the phase retardation layer 240 is divided into a plurality of modulation regions corresponding to different regions of the display panel 100, and the phase retardation layer 240 in each modulation region and the first polarizer 230 in the corresponding region together form the modulation block.

It should be noted that, the phase delay difference of at least two of the modulation blocks being 90 ° can be understood as: the phase retardation difference of the phase retardation layer 240 in at least two of the modulation regions is 90 °. At this time, the light emitted from the display panel 100 passes through the first polarizer 230 and then becomes linearly polarized light of the same kind, and the linearly polarized light of the same kind passes through the two phase retardation layers 240 having a phase retardation difference of 90 ° and then becomes linearly polarized light of two kinds having a polarization direction perpendicular to each other, thereby implementing the same function as the polarizer having the absorption axis patterned.

Referring to fig. 5, in the display device of the present application, the phase retardation layer 240 may include a liquid crystal coating 242 disposed on a side of the first polarizer 230 away from the display panel 100, and the liquid crystal coating 242 may include a plurality of liquid crystal molecules. Specifically, the phase retardation layer 240 may further include an alignment coating 241 disposed on a side of the first polarizer 230 away from the display panel 100, and a plurality of liquid crystal molecules may be mixed with a polymer material and coated on the alignment coating 241.

In the present embodiment, the pretilt angles of the liquid crystal molecules in at least two of the modulation blocks are different by 90 °, so that at least the phase retardation layer 240 in the modulation block has a phase retardation difference of 90 °. Specifically, in this embodiment, the surface of the alignment coating 241 may be patterned, so that the pretilt angle of the liquid crystal molecules coated on the alignment coating 241 meets the requirement that the pretilt angles of the liquid crystal molecules in at least two modulation blocks are different by 90 °.

In this embodiment, the liquid crystal coating 242 is disposed as the phase retardation layer 240, so that a plurality of modulation regions with a phase retardation difference of 90 ° can be easily divided on the phase retardation layer 240, and the phase retardation layer 240 is simple to manufacture and low in cost.

Referring to fig. 6 and 7, in the display device of the present application, after the outgoing light of the display screen is modulated by the modulation blocks with a phase difference of 90 °, some pixels are used to form a first virtual image, and another part of pixels are used to form a second virtual image, but the total number of pixels of the display panel 100 is unchanged, so that the arrangement of the modulation blocks in a "static state" may cause luminance loss and resolution loss to different degrees for both the first virtual image and the second virtual image observed by human eyes.

In this embodiment, in order to solve the problem of brightness loss and resolution loss caused by the "static" modulation block, the phase delay layer 240 may be configured to include a plurality of "dynamically variable" modulation blocks.

Specifically, referring to fig. 6, the phase retardation layer 240 may include a first electrode layer 244, a second electrode layer 245 and a liquid crystal deflection layer 243 disposed between the first electrode layer 244 and the second electrode layer 245, where the liquid crystal deflection layer 243 includes a plurality of liquid crystal molecules capable of deflecting, and the liquid crystal molecules deflect under an electric field formed by the first electrode layer 244 and the second electrode layer 245 to change a deflection angle, so as to realize the regulation of light. The first electrode layer 244 and the second electrode layer 245 may be provided with an insulating transparent film layer 247 on a side away from the liquid crystal deflection layer 243 to protect the first electrode layer 244 and the second electrode layer 245 from external interference.

In this embodiment, the first electrode layer 244 and the second electrode layer 245 may include a plurality of transparent electrodes 246, and at least two transparent electrodes 246 of the first electrode layer 244 and the second electrode layer 245 are independently connected to a voltage input terminal.

In this embodiment, at least two transparent electrodes 246 independently connected to a voltage input end are disposed in the first electrode layer 244 and the second electrode layer 245, so that the liquid crystal deflection layer 243 can form at least two independently controllable liquid crystal deflection regions, thereby independently controlling the deflection angles of liquid crystal molecules in the at least two liquid crystal deflection regions, and forming at least two modulation blocks having a phase retardation difference of 90 ° on the phase retardation layer 240, thereby implementing a modulation function on the outgoing light of the display panel 100. Moreover, by adjusting the voltage magnitude and direction of the liquid crystal deflection region, the retardation layer 240 can form at least two modulation blocks with 90 ° phase retardation difference and being "dynamically variable".

Referring to fig. 7, for example, it is assumed that, within a certain time period, the deflection voltage of the liquid crystal deflection region corresponding to a certain region of the display panel 100 is V1, the phase delay corresponding to the liquid crystal deflection region is λ 1, the deflection voltage of the liquid crystal deflection region corresponding to another region of the display panel 100 is V2, the phase delay corresponding to the liquid crystal deflection region is λ 2, and the absolute value of the difference between λ 1 and λ 2 is equal to pi/2; in the next time period, the deflection voltage of the liquid crystal deflection region corresponding to one region of the display panel 100 is adjusted to V2, the phase retardation corresponding to the liquid crystal deflection region is changed to λ 2, and the deflection voltage of the liquid crystal deflection region corresponding to another region of the display panel 100 is adjusted to V1, the phase retardation corresponding to the liquid crystal deflection region is changed to λ 1. At this time, the positions of the two modulation blocks corresponding to the phase delay difference of 90 ° are reversed, that is, the modulation blocks are "dynamically variable", but the emergent light of the display panel 100 can be modulated into two linearly polarized lights with the polarization directions perpendicular to each other.

In this embodiment, the deflection frequency of the liquid crystal molecules in the liquid crystal deflection layer 243 may be greater than or equal to 30Hz and less than or equal to 240Hz, and at this time, the "position transformation" frequency of the modulation blocks is higher than the frequency recognizable by human eyes, and human eyes cannot perceive the "position transformation" of at least two modulation blocks with a phase delay difference of 90 °. Due to the persistence of vision effect of human eyes, the light emitted from each region corresponding to the display panel 100 can form a first virtual image and a second virtual image when viewed by human eyes, thereby reducing "brightness loss" and "resolution loss" on the observation layer of human eyes.

Referring to fig. 8 to 10, in the display device of the present application, the modulation blocks include a first modulation block 210 and a second modulation block 220, and absorption axes of the first modulation block 210 and the second modulation block 220 are disposed vertically or have a phase delay difference of 90 °.

Specifically, when the first light modulation layer 200 only includes the first polarizer 230 with the patterned absorption axis, assuming that the absorption axis of the first polarizer 230 corresponding to the first modulation block 210 is 0 °, the absorption axis of the first polarizer 230 corresponding to the second modulation block 220 is 90 °.

When the first light modulation layer 200 includes the first polarizer 230 and the phase retardation layer 240, whose absorption axes are parallel, the emergent light of the display panel 100 becomes a first linearly polarized light after passing through the first polarizer 230, and if the phase retardation of the phase retardation layer 240 corresponding to the first modulation block 210 to the first linearly polarized light is 0, the phase retardation of the phase retardation layer 240 corresponding to the second modulation block 220 to the first linearly polarized light is pi/2.

Referring to fig. 8, in some embodiments, the first modulation blocks 210 and the second modulation blocks 220 may be arranged along a first direction, and the first modulation blocks 210 and the second modulation blocks 220 may be alternately arranged along a second direction, which is perpendicular to the first direction. Specifically, the first direction and the second direction may be a row/column direction and a column/row direction in which pixel units are arranged in the display panel 100, respectively.

Referring to fig. 9, in some embodiments, the first modulation blocks 210 and the second modulation blocks 220 may be alternately arranged in a first direction and a second direction, and the second direction is perpendicular to the first direction. Specifically, the first direction and the second direction may be a row/column direction and a column/row direction in which pixel units are arranged in the display panel 100, respectively.

Referring to fig. 9, in some embodiments, a plurality of the first modulation blocks 210 may correspond to a central region of the display panel 100, and a plurality of the second modulation blocks 220 may correspond to a peripheral region of the display panel 100 located at a periphery of the central region.

In this embodiment, each of the modulation regions may correspond to a microscopic pixel unit on the display panel 100, or may correspond to a macroscopic display area on the display panel 100.

In this embodiment, the first modulation block 210 and the second modulation block 220 are arranged in the above-mentioned arrangement manner, so that the arrangement of the first modulation block 210 and the second modulation block 220 is more regular, and the emergent light of the display panel 100 enters human eyes for imaging more uniformly after being modulated by the first modulation block 210 and the second modulation block 220, thereby achieving better three-dimensional impression.

This application embodiment sets gradually first light modulation layer 200 and second light modulation layer 300 through the light-emitting side at display panel 100, makes display panel 100's emergent light through first light modulation layer 200 with the modulation back of second light modulation becomes with the line polarization that the modulation block corresponds and propagates through two kinds of light paths and gets into people's eye formation of image, because the line polarization that gets into people's eye has two kinds of propagation paths for the line polarization that gets into people's eye through two kinds of propagation paths does not coincide at the image plane that people's eye becomes, has two virtual image planes promptly, thereby realize the multi-focal plane and show, produce the depth perception and the third dimension of different levels focal plane, can effectively promote user's three-dimensional impression and solve the problem of convergence conflict, and the overall structure of this application is compact, holistic volume is less, response speed is faster, multi-focal plane display effect is better.

The foregoing detailed description is directed to a display device provided in an embodiment of the present application, and specific examples are used herein to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A display device, comprising:

a display panel;

the first light modulation layer is arranged on the light emergent side of the display panel;

the second light modulation layer is arranged on one side, far away from the display panel, of the first light modulation layer and comprises a first 1/4 wave plate, a semi-transparent and semi-reflective film, a lens, a second 1/4 wave plate, a reflective polarizer and a third polarizer, wherein the first 1/4 wave plate is arranged on one side, far away from the display panel, of the first light modulation layer, the semi-transparent and semi-reflective film is arranged on the first 1/4 wave plate, the lens is arranged on one side, far away from the first light modulation layer, of the lens, the second 1/4 wave plate is arranged on one side, far away from the semi-transparent and semi-reflective film, of the second 1/4 wave plate, the reflective polarizer is arranged on one side, far away from the second 1/4 wave plate, of the reflective polarizer and the third polarizer is arranged on one side, far away from the second 1/4 wave plate, of the reflective polarizer;

the first light modulation layer comprises a plurality of modulation blocks corresponding to different areas of the display panel, the absorption axes of at least two modulation blocks are vertically arranged, or the phase delay difference of at least two modulation blocks is 90 degrees.

2. The display device according to claim 1, wherein the first light modulation layer comprises a first polarizer disposed on a light exit surface of the display panel;

the first polarizer comprises a plurality of modulation blocks corresponding to different areas of the display panel, and absorption axes of at least two modulation blocks are arranged vertically.

3. The display device according to claim 2, further comprising a second polarizer on a side of the display panel remote from the first polarizer;

the second polarizer comprises a plurality of modulation regions corresponding to the first polarizer, and the absorption axes in the modulation regions are perpendicular to the absorption axes of the corresponding modulation blocks.

4. The display device according to claim 1, wherein the first light modulation layer comprises a first polarizer disposed on the light emitting surface of the display panel and a phase retardation layer disposed on a side of the first polarizer away from the display panel;

wherein the phase delay layer comprises a plurality of modulation blocks corresponding to different regions of the display panel, and the phase delay difference of at least two modulation blocks is 90 degrees.

5. The display device according to claim 4, wherein the phase retardation layer comprises a liquid crystal coating layer disposed on a side of the first polarizer remote from the display panel, the liquid crystal coating layer comprising a plurality of liquid crystal molecules;

wherein the pretilt angles of the liquid crystal molecules in at least two of the modulation blocks are different by 90 degrees.

6. The display device according to claim 4, wherein the phase retardation layer comprises a first electrode layer, a second electrode layer, and a liquid crystal deflection layer provided between the first electrode layer and the second electrode layer;

the first electrode layer and the second electrode layer comprise a plurality of transparent electrodes, and at least two transparent electrodes in the first electrode layer and the second electrode layer are independently connected with a voltage input end.

7. A display device as claimed in claim 6, characterized in that the deflection frequency of the liquid crystal molecules in the liquid crystal deflection layer is greater than or equal to 30Hz and less than or equal to 240Hz.

8. The display device according to claim 2 or 4, wherein the modulation blocks comprise a first modulation block and a second modulation block, absorption axes of the first modulation block and the second modulation block are vertically arranged or phase delay difference is 90 °;

the first modulation blocks and the second modulation blocks are arranged along a first direction, and the first modulation blocks and the second modulation blocks are alternately arranged along a second direction, wherein the second direction is perpendicular to the first direction.

9. The display device according to claim 2 or 4, wherein the modulation blocks comprise a first modulation block and a second modulation block, absorption axes of the first modulation block and the second modulation block are vertically arranged or phase delay difference is 90 °;

the first modulation blocks and the second modulation blocks are alternately arranged in a first direction and a second direction, and the second direction is perpendicular to the first direction.

10. The display device according to claim 2 or 4, wherein the modulation blocks comprise a first modulation block and a second modulation block, absorption axes of the first modulation block and the second modulation block are vertically arranged or phase delay difference is 90 °;

the plurality of first modulation blocks correspond to a central area of the display panel, and the plurality of second modulation blocks correspond to a peripheral area of the display panel, which is located at the periphery of the central area.

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