CN117518520A - Display device - Google Patents

Display device Download PDF

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Publication number
CN117518520A
CN117518520A CN202310655603.4A CN202310655603A CN117518520A CN 117518520 A CN117518520 A CN 117518520A CN 202310655603 A CN202310655603 A CN 202310655603A CN 117518520 A CN117518520 A CN 117518520A
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CN
China
Prior art keywords
layer
light
display panel
display device
display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310655603.4A
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Chinese (zh)
Inventor
张桂洋
叶鑫林
何瑞
查国伟
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Publication date
Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to CN202310655603.4A priority Critical patent/CN117518520A/en
Publication of CN117518520A publication Critical patent/CN117518520A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G02B30/28—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays involving active lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • G02B30/31—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers involving active parallax barriers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Geometry (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application provides a display device, this display device include display panel to and set up in display panel light-emitting side's light integration layer and light adjustment layer, light integration layer and the orthographic projection of light adjustment layer on display panel all cover display panel's display area, and light adjustment layer includes the adjustable transparent medium layer of refracting index, and transparent medium layer and light integration layer have different refracting index. According to the method, the 3D display effect with the adjustable visual angle is achieved by arranging the transparent medium layer with the adjustable refractive index in the light adjusting layer, and the requirements of various application scenes such as a wide visual angle, a narrow visual angle and a biased visual angle are met.

Description

Display device
Technical Field
The application relates to the technical field of display, in particular to a display device.
Background
The 3D display technology is an upgrade scheme of the 2D display technology. Early 3D technologies were mainly implemented using binocular parallax schemes of red-blue, red-green glasses or polarized glasses, and most of the binocular parallax technologies are used in movie theatres, and eye fatigue, dizziness and the like can be generated when the stereoscopic vision is watched for a long time. This is due to the natural conflict between convergence of the eyes and accommodation functions, the monocular view is actually a 2D image, the slightly different 2D images are seen by both eyes to synthesize a 3D image in the brain, and the position of the 3D image is different from the position of the 2D image seen by the monocular.
To address the shortcomings of binocular viewing schemes, researchers have developed light field display technology, known as true three-dimensional display, in which a single eye can view three-dimensional images. There are three general types of schemes for implementing light field display technology: volume three-dimensional display technology, integrated imaging three-dimensional display technology, and holographic three-dimensional display technology. The volume of the 3D body is large, the resolution ratio is low, and the like, so that most of the problems are used for advertisement display, the requirement on the resolution ratio of the holographic 3D is high, the calculated amount is large, the popularization is difficult in a short time, and the integrated imaging light field display technology is widely studied at present.
The integrated imaging light field display scheme is to project all pixels of a display screen to a space range of a certain depth to form a 3D image, so that a real three-dimensional object is formed, and different images can be seen from different observation visual angles. However, the technology is usually implemented by a micro lens array or a small hole array, and the aperture of the imaging optical element is small, so that the display viewing angle is small, the viewing angle range is fixed, and the application scene requirement of multi-angle observation is difficult to meet.
Disclosure of Invention
The application provides a display device for solve the fixed technical problem of visual angle scope that present integrated formation of image light field display technology exists, in order to satisfy the application scenario demand of multi-angle observation.
The present application provides a display device, which includes:
a display panel;
the light integration layer is arranged on the light emitting side of the display panel, and the orthographic projection of the light integration layer on the display panel at least covers the display area of the display panel;
the light adjusting layer is arranged on one side of the display panel, which faces the lens layer, the orthographic projection of the light adjusting layer on the display panel at least covers the display area of the display panel, the light adjusting layer comprises an electrode layer and a transparent medium layer with an adjustable refractive index, and the refractive index of the transparent medium layer is different from that of the light integrating layer.
In an embodiment, the light modulation layer further comprises an electrode layer for generating an electric field, and the transparent medium layer has different refractive indexes under the action of different electric fields.
In an embodiment, the light adjusting layer includes a plurality of dimming units arranged in an array, the display panel includes a plurality of image units arranged in an array, and the image units include a combination of a plurality of adjacent pixel units;
one of the dimming units corresponds to one of the image units.
In an embodiment, the light adjusting layer is disposed between the display panel and the light integration layer;
the display device further comprises a support structure arranged between the display panel and the light integration layer, wherein the support structure is arranged at least along the edge of the light adjustment layer;
one end of the supporting structure is connected with the display panel, and the other end of the supporting structure is connected with the light integration layer.
In an embodiment, the support structure comprises a plurality of support blocks disposed inside the light integration layer;
one end of the supporting block is connected with the display panel, and the other end of the supporting block is connected with the light integration layer;
the support block is disposed along an edge of the dimming unit.
In one embodiment, the support blocks are made of black light absorbing material.
In an embodiment, the electrode layer includes a first electrode layer and a second electrode layer, and the first electrode layer and the second electrode layer are respectively located at two opposite sides of the transparent medium layer.
In an embodiment, the electrode layer includes a first electrode layer and a second electrode layer, both of which are located on the same side of the transparent dielectric layer.
In one embodiment, the transparent dielectric layer includes one of a liquid crystal and a lithium niobate crystal.
In an embodiment, the light integration layer comprises one of a lens array and an array of apertures.
The beneficial effects of this application: the application provides a display device, this display device include display panel to and set up in display panel light-emitting side's light integration layer and light adjustment layer, light integration layer and the orthographic projection of light adjustment layer on display panel all cover display panel's display area, and light adjustment layer includes the adjustable transparent medium layer of refracting index, and transparent medium layer and light integration layer have different refracting index. According to the method, the 3D display effect with the adjustable visual angle is achieved by arranging the transparent medium layer with the adjustable refractive index in the light adjusting layer, and the requirements of various application scenes such as a wide visual angle, a narrow visual angle and a biased visual angle are met.
Drawings
Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a display principle of a conventional 3D parallax display technology.
Fig. 2 is a schematic diagram of a display principle of the 3D light field display technology.
Fig. 3 is a schematic diagram of a structure and an imaging principle of a display device according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a dimming principle of a light adjusting layer according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a first display device according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a second display device according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a third display device according to an embodiment of the present application.
Fig. 8 is a schematic structural diagram of a fourth display device according to an embodiment of the present application.
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. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The embodiment of the application provides a display device, this display device includes display panel to and set up in display panel light-emitting side's light integration layer and light adjustment layer, light integration layer and light adjustment layer all cover display panel's display area on display panel's orthographic projection, and light adjustment layer includes the adjustable transparent medium layer of refracting index, and transparent medium layer and light integration layer have different refracting indexes. According to the embodiment of the application, the transparent medium layer with the adjustable refractive index is arranged in the light adjusting layer, the 3D display effect with the adjustable visual angle is achieved, and the requirements of various application scenes such as a wide visual angle, a narrow visual angle and a biased visual angle are met.
Referring to fig. 1, fig. 1 is a schematic diagram of a display principle of a conventional 3D parallax display technology, which relies on a person's left and right eyes to see different images on a parallax display, such as an a image and a b image, respectively, and then the person's brain automatically synthesizes the different images seen by the left and right eyes into a c image, so as to generate a 3D look and feel. Because the positions of the images a, b and c are different, the long-time watching can cause convergence and vision conflict, and dizziness and discomfort are caused.
Whereas the principle of 3D light field display is different from 3D parallax display, as shown in fig. 2, fig. 2 is a schematic diagram of the principle of display of 3D light field display technology. Under the technology, the light field display directly presents the image at the position D, and the human eyes directly observe the image at the position D to realize the 3D impression, so that the convergence and vision conflict do not exist, and compared with the 3D parallax technology, the 3D parallax technology has obvious advantages.
For the 3D light field display technology, an optimization scheme is proposed in the present application, please refer to fig. 3, and fig. 3 is a schematic diagram of a structure and an imaging principle of a display device provided in an embodiment of the present application. The present embodiment provides a display device that can realize a 3D display effect. The display device includes a display panel 100, a light integration layer 300 disposed at a light-emitting side of the display panel 100, and a light adjustment layer 200 disposed at a side of the display panel 100 facing the light integration layer 300. The display panel 100 serves as an image source, and after light generated for displaying an image passes through the light modulation layer 200 and the light integration layer 300, a 3D image is presented at a light emitting side thereof, thereby realizing a 3D imaging effect of the display device.
In the display device, the display panel 100 may be a liquid crystal display panel, an organic light emitting diode display panel, or any other display panel, as long as the function of light emitting display can be achieved, as the display panel 100 in this embodiment.
The light integration layer 300 is disposed on the light emitting side of the display panel 100, and the front projection of the light integration layer 300 on the display panel 100 at least covers the display area of the display panel 100, so that the light emitted by the display panel 100 is emitted through the light integration layer 300. Specifically, the light integration layer 300 is configured to selectively transmit the emitted light of a specific angle emitted by the display panel 100, and form a solid light image on a side of the light integration layer 300 away from the display panel 100.
Alternatively, the light integration layer 300 may be a lens array composed of a plurality of lens units, or a pinhole array composed of a plurality of pinholes arranged in an array. It can be understood that the lens structure has the functions of converging and diverging light, and the light emitted by the display panel 100 at a specific angle is converged in the lens array and diverged and emitted along a specific angle, so as to form a solid light image outside the lens array; the aperture array structure is based on the aperture imaging principle, and a solid light image can be formed outside the aperture array.
Further, the display panel 100 includes a plurality of image units P1 arranged in an array, where the image units P1 may be local display areas formed by combining a plurality of adjacent pixel units in the display panel 100, each image unit P1 may be independently controlled by a separate control line, or the plurality of image units P1 may be integrally controlled by a plurality of control lines, but in any control mode, the image units P1 cooperate with each other when performing a picture display, so as to achieve an effect of generating a complete picture.
When the light integration layer 300 is a lens array, each of the lens units is disposed corresponding to one of the image units P1, and the size of the lens unit is smaller than or equal to the size of the image unit P1 in a light emitting direction perpendicular to the display panel 100. Alternatively, the lens unit has a size of between 1 mm and 2 cm in a light emitting direction perpendicular to the display panel 100.
When the light integration layer 300 is in a small hole array structure, each of the image units P1 may correspond to a plurality of small holes, and the diameter of the small holes is smaller than the size of the image unit P1 in a direction perpendicular to the light emitting direction of the display panel 100.
Alternatively, the light adjustment layer 200 may be disposed between the display panel 100 and the light integration layer 300, or may be disposed on a side of the light integration layer 300 away from the display panel 100. The light adjusting layer 200 is used for adjusting the light propagation angle, so that the imaging space of the display device is enlarged, reduced or moved to the periphery, and further the visual angle adjustment of the display device is realized.
Specifically, in order to realize the function of the light modulation layer 200 to adjust the light emitting angle, the light modulation layer 200 has the following structural and functional features. The light adjusting layer 200 is internally provided with a transparent dielectric layer with an adjustable refractive index, and the transparent dielectric layer and the light integrating layer 300 have different refractive indexes, so that the light adjusting function of the light adjusting layer 200 is realized by utilizing the refractive index difference between the transparent dielectric layer and the light integrating layer 300 and the characteristic that the refractive index of the transparent dielectric layer is adjustable.
Further, the light adjusting layer 200 further includes an electrode layer for generating an electric field, and the transparent dielectric layer has a characteristic of exhibiting different refractive indexes under the action of different electric fields, so as to realize a dimming function that the electrode layer generates an electric field, and the transparent dielectric layer changes the refractive index according to the electric field change of the electrode layer.
Further, the electrode layer includes a first electrode layer and a second electrode layer, where the first electrode layer and the second electrode layer may be located on opposite sides of the transparent dielectric layer, or may be located on the same side of the transparent dielectric layer together.
Alternatively, the transparent dielectric layer may be a liquid crystal or lithium niobate crystal. It can be understood that the liquid crystal is in a special form between solid and liquid, when the transparent medium layer adopts the liquid crystal, the liquid crystal monomer can generate angle deflection under the action of an electric field generated by the electrode layer, and different deflection angles correspond to different refractive indexes, so that the refractive index is adjustable; the lithium niobate crystal is a solid crystal, and under the action of different electric fields, the electric dipole moment in the crystal has an orientation effect, so that the refractive index of the crystal is changed, and the refractive index is adjustable.
Regarding the dimming principle of the light adjusting layer 200, the following description is made with reference to fig. 4, where the light adjusting layer 200 is located between the display panel 100 and the light integration layer 300. The light emitted from the display panel 100 is incident into the light integration layer 300 after passing through the light adjustment layer 200. When the refractive index of the light modulation layer 200 is equal to the refractive index of the light integration layer 300, the incident light is not refracted at the interface between the light modulation layer 200 and the light integration layer 300, passes through the interface along a straight line, and then is refracted at the interface at the other side of the light integration layer 300 to be emitted, as L0 in fig. 4. When the refractive index of the light modulation layer 200 is smaller than that of the light integration layer 300, incident light is refracted at the interface between the light modulation layer 200 and the light integration layer 300, and is emitted at a smaller angle, and then is emitted after being refracted at the interface at the other side of the light integration layer 300, as in L1 of fig. 4. When the refractive index of the light modulation layer 200 is greater than that of the light integration layer 300, incident light is refracted at the interface between the light modulation layer 200 and the light integration layer 300, exits the interface at a greater angle, and as the refractive index of the light modulation layer 200 is further increased, the exit angle is also greater, and then exits after being refracted at the other side interface of the light integration layer 300, as in L3 and L4 in fig. 4.
It can be understood that when the light integration layer 300 has a small hole array structure, the interface between the light adjustment layer 200 and the light integration layer 300 is equivalent to the interface between the light adjustment layer 200 and air, so that when the refractive index of the light adjustment layer 200 changes due to the fixed refractive index of air, the angle of the emitted light is necessarily changed, thereby realizing the adjustment of the viewing angle.
On the basis of the above discussion, with continued reference to fig. 3, the imaging light of the image unit P1 is emitted after passing through the light modulation layer 200 and the light integration layer 300, and forms a solid light image P2. With the change of the refractive index of the light adjusting layer 200, the imaging size and imaging angle of the solid light image P2 can be changed, so as to realize the viewing angle adjustment of the 3D display.
The structural and functional features of the display device provided in the present application are described below in connection with specific embodiments.
In an embodiment, referring to fig. 5, fig. 5 is a schematic structural diagram of a first display device according to an embodiment of the present application. The display device includes a display panel 100, a light integration layer 300 disposed at a light emitting side of the display panel 100, and a light adjustment layer 200 disposed between the display panel 100 and the light integration layer 300. After the light generated by the display panel 100 for displaying an image passes through the light modulation layer 200 and the light integration layer 300, a 3D image is presented at the light emitting side thereof, thereby realizing a 3D imaging effect. The front projection of the light adjusting layer 200 and the light integrating layer 300 on the display panel 100 at least covers the display area of the display panel 100, so as to ensure that the light emitted by the display panel 100 is emitted after passing through the light adjusting layer 200 and the light integrating layer 300 in sequence.
The display panel 100 includes a plurality of image units P1 arranged in an array, and the image units P1 may be a partial display area of the display panel 100 formed by combining a plurality of adjacent pixel units. The light integration layer 300 includes a plurality of dimming units 301 arranged in an array, the dimming units 301 are lenses, each of the lenses is disposed corresponding to one of the image units P1, and in a direction perpendicular to a light emitting direction of the display panel 100, a size of the lens unit 301 is smaller than or equal to a size of the image unit P1. Alternatively, the lens unit has a size of between 1 mm and 2 cm in a light emitting direction perpendicular to the display panel 100.
The light adjusting layer 200 is internally provided with an electrode layer and a transparent medium layer, the electrode layer comprises a first electrode layer and a second electrode layer, and the first electrode layer and the second electrode layer can be respectively positioned on two opposite sides of the transparent medium layer or can be jointly positioned on the same side of the transparent medium layer. The transparent dielectric layer may be a liquid crystal or a lithium niobate crystal. Along with the change of the electric field generated by the electrode layer, the refractive index of the transparent dielectric layer also changes, so that the 3D display visual angle of the display device is adjusted.
The display device further comprises a support structure 400 arranged between the display panel 100 and the light integration layer 300, the support structure 400 being arranged at least along an edge of the light modulation layer 200. Alternatively, the support structure 400 may form a continuous ring-shaped structure around the edge of the light modulation layer 200, or may be a block-shaped structure intermittently provided around the edge of the light modulation layer 200. One end of the support structure 400 is connected to the display panel 100, and the other end of the support structure 400 is connected to the light integration layer 300. By the supporting effect of the supporting structure 400, a receiving space of the light adjusting layer 200 is formed between the display panel 100 and the light integration layer 300.
Optionally, referring further to fig. 6, the support structure 400 may further include a plurality of support blocks 401 disposed inside the light modulation layer 200; one end of the supporting block 401 is connected with the display panel 100, and the other end is connected with the light integration layer 300; the support block 401 is disposed along an edge of the dimming unit 301. Alternatively, the supporting block 401 is made of a black light absorbing material, and crosstalk between adjacent dimming units 301 can be effectively reduced.
In another embodiment, referring to fig. 7, fig. 7 is a schematic structural diagram of a third display device according to an embodiment of the present application. The display device includes a display panel 100, a light integration layer 300 disposed at a light emitting side of the display panel 100, and a light adjustment layer 200 disposed between the display panel 100 and the light integration layer 300. The front projection of the light modulating layer 200 and the light integrating layer 300 onto the display panel 100 covers at least the display area of the display panel 100. The display panel 100 includes a plurality of image cells P1 arranged in an array. The light integration layer 300 is a small hole array composed of a plurality of small holes 302 arranged in an array. Each of the image units P1 may correspond to a plurality of small holes, and the aperture diameter of the small holes is smaller than the size of the image unit P1 in a light emitting direction perpendicular to the display panel 100.
The light adjusting layer 200 is internally provided with an electrode layer and a transparent medium layer, the electrode layer comprises a first electrode layer and a second electrode layer, and the first electrode layer and the second electrode layer can be respectively positioned on two opposite sides of the transparent medium layer or can be jointly positioned on the same side of the transparent medium layer. The transparent dielectric layer may be a liquid crystal or a lithium niobate crystal.
The display device further comprises a support structure 400 arranged between the display panel 100 and the light integration layer 300. The support structure 400 may be disposed along an edge of the light conditioning layer 200 or may be disposed inside the light conditioning layer 200. One end of the support structure 400 is connected to the display panel 100, and the other end of the support structure 400 is connected to the light integration layer 300. By the supporting effect of the supporting structure 400, a receiving space of the light adjusting layer 200 is formed between the display panel 100 and the light integration layer 300.
In still another embodiment, referring to fig. 8, fig. 8 is a schematic structural diagram of a third display device according to an embodiment of the present application. The display device includes a display panel 100, a light integration layer 300 disposed at a light emitting side of the display panel 100, and a light adjustment layer 200 disposed at a side of the light integration layer 300 remote from the display panel 100. The front projection of the light modulating layer 200 and the light integrating layer 300 onto the display panel 100 covers at least the display area of the display panel 100. The display panel 100 includes a plurality of image cells P1 arranged in an array. The light integration layer 300 includes a plurality of dimming units 301 arranged in an array, the dimming units 301 are lenses, each of the lenses is disposed corresponding to one of the image units P1, and in a direction perpendicular to a light emitting direction of the display panel 100, a size of the lens unit 301 is smaller than or equal to a size of the image unit P1.
The light adjusting layer 200 is internally provided with an electrode layer and a transparent medium layer, the electrode layer comprises a first electrode layer and a second electrode layer, and the first electrode layer and the second electrode layer can be respectively positioned on two opposite sides of the transparent medium layer or can be jointly positioned on the same side of the transparent medium layer. The transparent dielectric layer may be a liquid crystal or a lithium niobate crystal.
The display device further comprises a support structure 400 arranged between the display panel 100 and the light integration layer 300. The support structure 400 may be disposed along an edge of the light modulation layer 200, or may be disposed at any position between the display panel 100 and the light integration layer 300. One end of the support structure 400 is connected to the display panel 100, and the other end is connected to the light integration layer 300. The support structure 400 supports one air medium layer between the display panel 100 and the light integration layer 300.
The features described in any of the above embodiments are equally applicable to other embodiments based on the same or similar inventive concept, and the description of each embodiment should not be construed independently.
Based on the description of the above embodiments and the drawings, taking the photo-integration layer 300 as a lens array as an example, the effect of the light adjusting layer 200 on the display depth of field is set to perform simulation, taking the refractive index of the light adjusting layer 200 as a specific value as an example, and the simulation results are shown in the following table:
here, the "object side dielectric layer design" indicates a dielectric condition provided between the display panel 100 and the light integration layer 300, and the "image side dielectric layer design" indicates a dielectric condition provided on a side of the light integration layer 300 away from the display panel 100. According to the simulation results, the light adjusting layer 200 is disposed on either side of the light integration layer 300 to enhance the depth of field of the display device, so that the technical effect of adjustable viewing angle is achieved by disposing the light adjusting layer 200.
In summary, the display device provided in this embodiment of the present application includes a display panel, and a light integration layer and a light adjustment layer disposed on a light emitting side of the display panel, where orthographic projections of the light integration layer and the light adjustment layer on the display panel all cover a display area of the display panel, the light adjustment layer includes a transparent medium layer with an adjustable refractive index, and the transparent medium layer and the light integration layer have different refractive indexes. By arranging the transparent medium layer with the adjustable refractive index in the light adjusting layer, the 3D display effect with the adjustable visual angle is realized, and the requirements of various application scenes such as wide visual angle, narrow visual angle, biased visual angle and the like are met.
It should be noted that, although the present application discloses the above embodiments, the above embodiments are not intended to limit the present application, and those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application is defined by the claims.

Claims (10)

1. A display device, comprising:
a display panel;
the light integration layer is arranged on the light emitting side of the display panel, and the orthographic projection of the light integration layer on the display panel at least covers the display area of the display panel;
the light adjusting layer is arranged on one side of the display panel, which faces the lens layer, the orthographic projection of the light adjusting layer on the display panel at least covers the display area of the display panel, the light adjusting layer comprises a transparent medium layer with an adjustable refractive index, and the refractive index of the transparent medium layer is different from that of the light integrating layer.
2. The display device according to claim 1, wherein the light modulation layer further comprises an electrode layer for generating an electric field, and the transparent dielectric layer has different refractive indexes under different electric fields.
3. The display device according to claim 2, wherein the light adjustment layer includes a plurality of light adjustment units arranged in an array, and the display panel includes a plurality of image units arranged in an array; the image unit comprises a combination of a plurality of adjacent pixel units;
one of the dimming units corresponds to one of the image units.
4. The display device according to claim 3, wherein the light adjustment layer is provided between the display panel and the light integration layer;
the display device further comprises a support structure arranged between the display panel and the light integration layer, wherein the support structure is arranged at least along the edge of the light adjustment layer;
one end of the supporting structure is connected with the display panel, and the other end of the supporting structure is connected with the light integration layer.
5. The display device of claim 4, wherein the support structure comprises a plurality of support blocks disposed inside the light integration layer;
one end of the supporting block is connected with the display panel, and the other end of the supporting block is connected with the light integration layer;
the support block is disposed along an edge of the dimming unit.
6. The display device of claim 5, wherein the support blocks are made of a black light absorbing material.
7. The display device according to claim 2, wherein the electrode layer comprises a first electrode layer and a second electrode layer, the first electrode layer and the second electrode layer being located on opposite sides of the transparent dielectric layer, respectively.
8. The display device according to claim 2, wherein the electrode layer comprises a first electrode layer and a second electrode layer, both of which are located on the same side of the transparent dielectric layer.
9. The display device according to any one of claims 1 to 8, wherein the transparent dielectric layer includes one of a liquid crystal and a lithium niobate crystal.
10. The display device of any one of claims 1 to 8, wherein the light integration layer comprises one of a lens array and an array of apertures.
CN202310655603.4A 2023-06-02 2023-06-02 Display device Pending CN117518520A (en)

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Application Number Priority Date Filing Date Title
CN202310655603.4A CN117518520A (en) 2023-06-02 2023-06-02 Display device

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CN117518520A true CN117518520A (en) 2024-02-06

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