WO2019127964A1

WO2019127964A1 - Integrated imaging display system

Info

Publication number: WO2019127964A1
Application number: PCT/CN2018/081394
Authority: WO
Inventors: 李礼操; 薛翰聪
Original assignee: 张家港康得新光电材料有限公司
Priority date: 2017-12-29
Filing date: 2018-03-30
Publication date: 2019-07-04
Also published as: CN107942526A

Abstract

An integrated imaging display system, comprising: a display unit (1) configured to display an image; and a plurality of light regulating units (2) disposed at one side of the display unit (1) and arranged in succession along a direction distant from the display unit (1). Stereoscopic images (11, 12, 13) formed by the plurality of light regulating units (2) correspond to multiple different depths, wherein the depths are distances between the stereoscopic images (11, 12, 13) and the display unit (1). The different light regulating units (2) are controlled to work at different times, so that the corresponding image information form stereoscopic images (11, 12, 13) with a certain depth range at different depth positions, and the stereoscopic images (11, 12, 13) at different positions can thus be obtained successively. Therefore, the display depth of the system is improved.

Description

Integrated imaging display system

Technical field

The present application relates to the field of 3D display, and in particular to an integrated imaging display system.

Background technique

The 3D display is popular because it can present stereoscopic image information and give viewers a more intuitive experience. At present, the more mature 3D display technology has glasses 3D display technology and naked eye 3D display technology, which is mainly based on the binocular parallax principle, and the two eyes respectively perceive different images to form stereo vision.

However, since these techniques do not provide depth information, there is a problem of VR (vergence-accommodation conflict). The mechanism is that, as shown in FIG. 1, in order to see the image clearly, the human eye 03 must be focused on the 2D screen 01, and the actually rendered 3D image 02 is floating or trapped in the 2D screen 01, which in turn forces The human eye converges on the location of the 3D image, which creates a VAC problem. The VAC problem is contrary to the daily physiological laws of human beings. This problem makes it easy for people to experience visual fatigue and vertigo during the use of the display device, which restricts the application of these 3D display devices.

In order to solve the VAC problem, many proposals have been made, and integrated imaging display technology is one of the solutions. The general structure of MicroLens Array (MLA) integrated imaging display technology, its 3D image depth is affected by factors such as display resolution, lens pitch, lens and display screen spacing, and constraints with 3D image resolution and viewing angle. Therefore, its depth is relatively small.

Summary of the invention

The main purpose of the present application is to provide an integrated imaging display system to solve the problem of small depth of images in a 3D display system in the prior art.

In order to achieve the above object, according to an aspect of the present application, an integrated imaging display system is provided, the integrated imaging display system comprising: a display unit for displaying an image; and a plurality of light control units disposed on one side of the display unit And the plurality of light control units are arranged in a direction away from the display unit, and the three-dimensional images formed by the plurality of light control units correspond to a plurality of different depths, wherein the depth is a distance between the three-dimensional image and the display unit.

Further, at least one of the above light control units includes a switchable lens structure and/or a switchable slit structure.

Further, the switchable lens structure described above includes a switchable lenticular lens or a switchable microlens array.

Further, the switchable lens structure includes: a microlens array including a plurality of sequentially arranged microlenses; a liquid crystal portion including a plurality of liquid crystal molecules, wherein the liquid crystal portion is disposed on one side of the microlens array; and a control portion Controlling the refractive index of the liquid crystal portion such that the refractive index of the liquid crystal portion is not equal to the refractive index of the microlens array in the guided state, and the refractive index of the liquid crystal portion and the microlens array are in a non-guided state The refractive indices are equal.

Further, the liquid crystal unit is a turning liquid crystal unit, the liquid crystal molecules are turning liquid crystal molecules, and the control unit controls steering of the turning liquid crystal molecules.

Further, the liquid crystal portion is a cured liquid crystal portion, the liquid crystal molecules are solidified liquid crystal molecules, and the control portion includes a polarizing element disposed on a side of the microlens array close to incident light, and the polarizing element is for adjusting polarization of incident light. Direction; a polarization controller for controlling the operating state of the above polarizing element.

Further, the switchable lens structure includes: a liquid crystal portion including a plurality of liquid crystal molecules, the refractive index at different positions of the liquid crystal portion being the same or different by applying an electric field, and refractive index at different positions of the liquid crystal portion At the same time, the switchable lens structure is in a non-guide state, and the switchable lens structure is in a guiding state when the refractive indices at different positions of the liquid crystal portion are different.

Further, at least two adjacent light ray control units are spaced apart.

Further, a transparent unit is disposed between at least two adjacent light ray control units.

Further, the display unit is configured to display a plurality of images, and the light control unit modulates the signals of the image in a one-to-one correspondence, and forms a stereoscopic image at a corresponding depth position.

Further, the integrated imaging display system further includes: a control unit, wherein the control unit is configured to control the operation of the display unit and the operation of each of the light control units.

Applying the technical solution of the present application, the integrated imaging display system includes a plurality of light control units, and the stereoscopic images formed by the plurality of light control units correspond to a plurality of different depths, and control different light control units to work at different times. The corresponding image information is formed into stereoscopic images with a certain depth range at different depth positions, so that stereo images of different positions can be obtained in sequence, which is equivalent to increasing the display depth of the system.

DRAWINGS

The accompanying drawings, which are incorporated in the claims of the claims In the drawing:

Figure 1 shows a schematic diagram of the principle of the VAC problem in the prior art;

2 is a schematic structural diagram of an integrated imaging display system provided by an exemplary embodiment of the present application;

FIG. 3 is a schematic structural diagram of a first state of a light control unit according to an embodiment of the present application;

4 is a schematic structural view showing a second state of the light control unit of FIG. 3;

FIG. 5 is a schematic structural diagram of a second state of a light control unit according to another embodiment of the present application;

FIG. 6 is a schematic structural diagram of a first state of a light control unit according to still another embodiment of the present application;

Figure 7 is a block diagram showing the second state of the light control unit of Figure 6;

FIG. 8 is a schematic structural diagram of a first state of a light control unit according to still another embodiment of the present application;

Figure 9 is a block diagram showing the second state of the light control unit of Figure 8;

FIG. 10 is a schematic diagram of an optical path at a first moment of the light control unit provided in Embodiment 1 of the present application;

11 is a schematic diagram of an optical path at a second moment of the light control unit provided in Embodiment 1 of the present application;

FIG. 12 is a schematic diagram of an optical path at a third moment of the light control unit provided in Embodiment 1 of the present application;

13 is a schematic diagram of an optical path at a fourth moment of the light control unit provided in Embodiment 1 of the present application, that is, a schematic diagram of an optical path when the integrated imaging display system displays a 2D image;

14 to 16 show schematic structural views of three integrated imaging display systems.

Wherein, the above figures include the following reference numerals:

01, 2D screen; 02, 3D image; 03, human eye; 1, display unit; 2, light control unit; 21, microlens array; 22, encapsulation; 23, liquid crystal portion; 24, control portion; Element; 242, polarization controller; 25, first electrode; 26, second electrode; 11, first depth image; 12, second depth image; 13, third depth image; 20, first light control unit; a second light control unit; 40, a third light control unit; 100, a polarization direction.

Detailed ways

It should be noted that the following detailed description is illustrative and is intended to provide a further description of the application. All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise indicated.

It is to be noted that the terminology used herein is for the purpose of describing particular embodiments, and is not intended to limit the exemplary embodiments. As used herein, the singular " " " " " " There are features, steps, operations, devices, components, and/or combinations thereof.

It is understood that when an element (such as a layer, a film, a region, or a substrate) is described as being "on" another element, the element may be directly on the other element or the intermediate element may be present. Furthermore, in the specification and the claims below, when an element is "connected" to another element, the element can be "directly connected" to the other element or "electrically connected" to the other One component.

As described in the background art, the depth of an image in a 3D display system in the prior art is small. To solve the above technical problem, the present application proposes an integrated imaging display system.

In an exemplary embodiment of the present application, an integrated imaging display system is provided. As shown in FIG. 2, the integrated imaging display system includes a display unit 1 and a plurality of light control units 2. The display unit 1 is configured to display an image; the plurality of light control units 2 are disposed on one side of the display unit 1 , and the plurality of light control units 2 are sequentially arranged in a direction away from the display unit 1 , and the plurality of light adjustments are performed. The stereoscopic image formed by the unit 2 corresponds to a plurality of different depths, and the depth is a distance between the stereoscopic image and the display unit 1.

The integrated imaging display system of the present application includes a plurality of light control units, and the stereoscopic images formed by the plurality of light control units correspond to a plurality of different depths, and control different light control units to work at different times, so that corresponding image information is obtained. A stereoscopic image having a certain depth range is formed at different depth positions. As shown in FIG. 2, stereoscopic images of different positions can be sequentially obtained, which is equivalent to increasing the display depth of the system.

When it is to be noted, the plurality of light control units mentioned may be arranged in a contact arrangement or a spaced arrangement. When spaced apart, at least two adjacent light control units 2 may be provided with a transparent unit, such as a transparent unit formed of a material such as a transparent resin; of course, there may be no material filling in the space.

The display unit of the present application may be a display unit of any structure in the prior art, and a person skilled in the art may select a display unit of a suitable structure according to actual conditions. For example, an LCD panel, an OLED panel, an LED array, or other display unit can be selected.

It should be emphasized that the above-mentioned integrated imaging display system of the present application can not only realize the function of increasing the depth range of the integrated imaging system display, but also can realize different viewing distances when it is used in the image-wise naked-eye 3D system, that is, Improve viewers' viewing freedom.

The light control unit in the present application may be any structure that can be switched between the non-guide state and the guide state in the prior art, and those skilled in the art can select a light control unit of a suitable structure according to actual conditions. The guiding state here refers to a state in which incident light is refracted and guided to a predetermined direction or position, and the non-guide state is a state in which incident light is not refracted.

In an embodiment of the present application, the light control unit 2 includes a switchable lens structure and/or a switchable slit structure.

The switchable slit structure may be a switchable slit structure of any one of the prior art, and a person skilled in the art may select a suitable structure of the switchable slit structure to achieve the guide according to actual conditions. Switching between state and non-steering state. The switching between the guided state and the non-guided state is achieved, for example, by a switchable liquid crystal slit structure, a switchable electrochromic material slit structure, and a switchable photochromic material slit structure.

The switchable lens structure described above may be a switchable lens structure of any structure in the prior art, and a person skilled in the art may select a suitable structure of the switchable lens structure to achieve a guided state and a non-guide according to actual conditions. Switching of status.

In an embodiment of the present application, the switchable lens structure includes a switchable lenticular lens or a switchable microlens array, wherein the switchable lenticular lens is used to better achieve the switching between the steered state and the unsteered state. Means a switchable physical lenticular lens, the structure specifically comprising an electro-optic material (such as liquid crystal) and a lenticular lens array, wherein the refractive index of the electro-optic material is adjusted to be the same as or different from the refractive index of the lenticular lens array by adjusting the refractive index of the electro-optic material, thereby Switch between the guided state and the undirected state. The switchable microlens array refers to a structure including a liquid crystal and a microlens array. By adjusting the refractive index of the liquid crystal, the refractive index of the liquid crystal is the same as or different from the refractive index of the microlens array, thereby switching between the guided state and the non-guide state. .

In order to further ensure that the switchable lens structure is relatively stable, the performance is relatively stable, and the reliability is higher. In an embodiment of the present application, as shown in FIG. 3 to FIG. 7 , the switchable lens structure includes a microlens array 21 and a liquid crystal. The unit 23 and the control unit 24.

The microlens array 21 includes a plurality of microlenses arranged in sequence, the microlens array 21 has a microstructured surface, the liquid crystal portion 23 includes a plurality of liquid crystal molecules, and the liquid crystal portion 23 is disposed on one side of the microlens array 21; 24 is for controlling the refractive index of the liquid crystal portion 23 such that the refractive index of the liquid crystal portion 23 is not equal to the refractive index of the microlens array 21 in the guided state, and the refractive index of the liquid crystal portion 23 is in the non-guided state. The refractive index of the above microlens array 21 is equal.

In a specific embodiment, the switchable lens structure further includes a package portion 22, the package portion and the microstructure surface enclose a receiving cavity, and the liquid crystal portion is disposed in the receiving cavity, and may be specifically referred to FIG.

In addition, the control unit may control the refractive index of the liquid crystal unit by controlling the long axis direction of the liquid crystal molecules in the liquid crystal unit to control whether the refractive index of the liquid crystal portion is equal to or equal to the refractive index of the microlens array. Equally, the refractive index of the liquid crystal portion may be controlled by controlling the polarization direction of the incident light. A person skilled in the art can make the control part control different objects according to actual conditions, so that the refractive index of the crystal part is equal or unequal to the refractive index of the microlens array.

In an embodiment of the present application, as shown in FIG. 3 to FIG. 5, the liquid crystal portion 23 is a turning liquid crystal portion, and the liquid crystal molecules are turned liquid crystal molecules, and the long axis direction of the liquid crystal molecules turns with an applied voltage. The control unit 24 controls the steering of the steering liquid crystal molecules, and the control unit 24 is electrically connected to the liquid crystal unit 23. The control unit realizes deflection or no deflection in the long-axis direction of the liquid crystal portion by applying a voltage to the liquid crystal portion or not, so that the long-axis direction of the liquid crystal molecules is the same as or different from the polarization direction of the incident light, thereby realizing the liquid crystal portion. The refractive index is the same as or different from the refractive index of the microlens array, thereby achieving switching between the guided state and the non-guided state. In a specific embodiment, the integrated imaging display system further includes two electrodes respectively disposed on a side of the encapsulation portion away from the liquid crystal portion and a side of the microlens array remote from the liquid crystal portion, the control portion By applying a voltage between the two electrodes, a voltage is applied to both sides of the liquid crystal portion, thereby achieving deflection or no deflection in the long-axis direction in the liquid crystal portion.

3 and FIG. 4, a microlens array comprising a plurality of microlenses arranged in this order, and each micro-lens is a convex lens, the microlens array is a refractive index n _r. When no voltage is applied to the liquid crystal portion, the refractive index is n _e and n _r = n _e , that is, when no voltage is applied, the refractive index of the liquid crystal portion is the same as the refractive index of the microlens array, as shown in FIG. 3 , and further The non-guided state can be realized, and the microlens array does not function to refract light; when a voltage is applied to the liquid crystal portion, the refractive index of the liquid crystal portion changes to n _o , which is different from the refractive index n _{r of the} microlens array. The lens array functions to refract light, as shown in Fig. 4, thereby achieving a guided state.

Of course, the microlens array in the present application is not limited to the convex lens array shown in FIG. 3 and FIG. 4, and may also be a concave lens array. As shown in FIG. 5, the microlens array includes a plurality of concave lenses arranged in sequence, and a microlens. The refractive index of the array is n _r . When no voltage is applied to the liquid crystal portion, the refractive index is n _o and n _r = n _o , that is, when no voltage is applied, the refractive index of the liquid crystal portion is the same as the refractive index of the microlens array, and thus the non-guide state can be realized. The microlens array does not function to refract light; when a voltage is applied to the liquid crystal portion, the refractive index of the liquid crystal portion changes to n _e , which is different from the refractive index n _{r of the} microlens array, and the microlens array functions as refracted light. The role, as shown in Figure 5, thus achieve a guided state display.

In addition, it should be noted that the refractive index of the microlens array is not limited to a case where the refractive index of the liquid crystal portion is not applied with a voltage (the applied voltage is zero). The refractive index of the microlens array may be equal to the refractive index when the liquid crystal portion is applied with a voltage, that is, when a voltage is applied to the liquid crystal portion (ie, the applied voltage is not zero), the refractive index of the liquid crystal portion is equal to the refractive index of the microlens array, thereby realizing In the non-guided state; when no voltage is applied to the liquid crystal portion (that is, the applied voltage is zero), the refractive index of the liquid crystal portion is not equal to the refractive index of the microlens array, thereby achieving a guided state.

The change in the refractive index of the liquid crystal is caused by a change in the relationship between the polarization direction of the incident light and the long-axis direction. Therefore, the refractive index of the liquid crystal portion can be adjusted not only by adjusting the long-axis direction of the liquid crystal molecules, but also by The polarization direction of the incident light adjusts the refractive index of the liquid crystal portion. Specifically, when the polarization direction of the incident light is parallel to the long-axis direction of the liquid crystal molecules, the refractive index of the liquid crystal molecules is n _e , and the refractive index corresponding to the liquid crystal portion is also n _e ; when the polarization direction of the incident light and the long-axis direction of the liquid crystal molecules When perpendicular, the refractive index of the liquid crystal molecules is n _o , and the refractive index corresponding to the liquid crystal portion is also n _o .

In another embodiment of the present application, as shown in FIG. 6 and FIG. 7, the liquid crystal portion 23 is a solidified liquid crystal portion, the liquid crystal molecules are solidified liquid crystal molecules, and the control portion 24 includes a polarizing element 241 and a polarization controller 242. The polarizing element 241 is disposed on a side of the microlens array 21 close to the incident light, the polarizing element 241 is used to adjust the polarization direction of the incident light, and the polarization controller 242 is configured to control the working state of the polarizing element 241, that is, to control the polarizing element. In which direction, light is transmitted, and which direction is blocked.

A microlens array comprising a plurality of microlenses arranged in this order, and each microlens is a convex lens, the microlens array is a refractive index of n _r = n _e. When the incident light passes through the polarizing element as the light having the polarization direction 100 as shown in FIG. 6 (for example, when p light is used), and the polarization direction of the light is parallel to the long-axis direction of the liquid crystal molecule, the refractive index of the liquid crystal molecule is n _e Therefore, the refractive index of the liquid crystal portion is the same as the refractive index of the microlens array, as shown in FIG. 6, and further, the non-guide state can be realized, and the microlens array does not function to refract light; when the incident light passing through the polarizing element is When the polarization direction 100 is as shown in FIG. 7 (such as s-light), when the polarization direction of the light is perpendicular to the long-axis direction of the liquid crystal molecule, the refractive index of the liquid crystal molecule is n _o , and the refractive index n _{r of the} microlens array Unlike the microlens array, it acts to refract light, as shown in Figure 7, to achieve a guided state.

In still another embodiment of the present application, as shown in FIG. 8 and FIG. 9, the switchable lens structure includes a liquid crystal portion 23 including a plurality of liquid crystal molecules, and different positions of the liquid crystal portions are caused by applying an electric field. The refractive index is the same or different, and when the refractive index at different positions of the liquid crystal portion is the same, the switchable lens structure is in the non-guide state, and when the refractive index at different positions of the liquid crystal portion is different, the switchable The lens structure is in the above-described guiding state.

In a specific embodiment, the switchable lens structure further includes a plurality of first electrodes 25 and a plurality of second electrodes 26; each of the first electrodes 25 is disposed on the first surface of the liquid crystal portion 23, and a plurality of The first electrodes 25 are arranged at intervals; the second electrodes 26 are disposed on the second surface of the liquid crystal portion 23, the first surface is opposite to the second surface, and the first electrode 25 and the second electrode 26 are One-to-one correspondence, where the one-to-one correspondence corresponds not only the one-to-one correspondence of the number of times, but also the one-to-one correspondence between the positions of the first electrode and the second electrode, that is, the projection coverage of the first electrode on the second electrode The two electrodes are coincident with the second electrode or inside the second electrode, but it is ensured that the pair of electrodes formed by the one-to-one corresponding first electrode and the second electrode can deflect the liquid crystal molecules therebetween. By applying the same or different voltages to different pairs of electrodes, the refractive indices at different positions of the liquid crystal portion are made the same or different, thereby achieving a guided state or a non-guided state.

In order to ensure the display effect of the display system, the first electrode and the second electrode are both transparent electrodes.

In a preferred embodiment of the present application, the plurality of first electrodes are spaced apart, the plurality of second electrodes are spaced apart, and the projection of the first electrode on the second electrode coincides with the second electrode. As shown in Fig. 8, when the same voltage is applied between all the electrode pairs (which may be zero), the refractive index of all the liquid crystal molecules in the liquid crystal portion is the same, and the direction of the incident light passing through the liquid crystal portion does not change. As shown in FIG. 9, when different voltages are applied between different electrode pairs, the refractive indices of liquid crystal molecules at different positions in the liquid crystal portion are different, and the light is refracted in the direction of passage.

Of course, the switchable lens structure in which the guide state and the non-guide state are realized by adjusting the refractive index at different positions of the liquid crystal portion of the present application is not limited to the structure shown in FIG. 8 and FIG. 9 described above, and may be other structures. For example, including a first electrode and a plurality of second electrodes, the first electrode and the second electrode are respectively disposed on two sides of the liquid crystal portion, and the non-guide state and the guide are realized by applying the same or different voltages on the plurality of second electrodes. Switching of status. A person skilled in the art can select a suitable structure according to the actual situation to achieve the same or different refractive index at different positions of the liquid crystal portion.

In order to further ensure the formation of a larger display depth, the display unit 1 is configured to display a plurality of images, and the light control unit 2 modulates the signals of the images in a one-to-one correspondence and forms a stereoscopic image at corresponding depth positions.

In an embodiment of the present application, the integrated imaging display system further includes a control unit that controls display of the display unit and controls the operational status of each of the light control units 2. Specifically, the control unit controls the display order and display time of the plurality of images of the display unit, and the like; the control unit controls the working state of each of the light control units 2, for example, when the light control unit 2 is the light control unit 2 shown in FIG. The control unit controls the state of the control unit in the light control unit 2, and the control unit controls whether the control unit applies a voltage to the liquid crystal unit, thereby controlling the operation state of each light control unit 2.

The working process of the integrated imaging display system includes:

The control unit controls to input an image signal to the display unit (assuming the signal contains m frames);

The control unit decomposes the image signal into n groups of image signals according to different depth positions in the image, corresponding to n light control units;

The control unit sequentially controls the light control unit to be in an active state, and simultaneously controls the corresponding image signal for display, that is, displays the corresponding image, so that the light control unit modulates the corresponding image signal to obtain a stereoscopic image at different depths.

It should be noted that, in the integrated imaging display system of the present application, the plurality of light control units may be identical, as shown in FIG. 10, or may be partially identical, and may be completely different. Moreover, when different light control units are included, the arrangement of different light control units may also be arbitrary.

In order to illustrate a plurality of different combinations, a switchable lens structure including "a microlens array, a liquid crystal portion and a control portion, and the liquid crystal portion is a turning liquid crystal portion formed by turning liquid crystal molecules" is defined as a first switchable structure, as shown in the figure. 3, as shown in FIG. 4 and FIG. 5; the switchable lens structure defining "the microlens array, the liquid crystal portion and the control portion, and the liquid crystal portion is a solidified liquid crystal portion formed by solidifying liquid crystal molecules" is a second switchable structure, such as 6 and FIG. 7; the switchable lens structure defining "including the liquid crystal portion and causing the refractive index at the different positions of the liquid crystal portion to be the same or different to realize the switching of the guided and non-guided states by applying an electric field" is the third The switchable structure is shown in Figures 8 and 9.

For example, when two light modulating units are included in the integrated imaging display system, any one of the two light modulating units may be any one of the three switchable structures, specifically. The integrated imaging display system includes a first switchable structure and a second switchable structure, as shown in FIG. 14; or a second switchable structure and a third switchable structure, as shown in FIG. 15; or includes a first switchable The structure and the third switchable structure, as shown in FIG. 16; or include two first switchable structures; or two second switchable structures; or two third switchable structures.

Moreover, the arrangement of the two light control units is not limited to that shown in FIG. 14, FIG. 15, and FIG. 16, and the positions of the two light control units may be interchanged. For example, in FIG. 14, the first switchable The structure is interchanged with the position of the second switchable structure.

Of course, the switchable lens structure of the present application is not limited to the above three structures, and may be other structures in the prior art, and the three structures herein are merely listed for the specific case. A person skilled in the art can select a suitable switchable lens structure according to actual conditions.

In order to enable those skilled in the art to understand the technical solutions of the present application, the technical solutions of the present application will be described below in conjunction with specific embodiments.

Example

As shown in FIG. 10, the integrated imaging display system includes a display unit 1 and three light control units 2, and the three light control units 2 are a first light control unit 20, a second light control unit 30, and a third light control unit 40, respectively. . Each of the light control units 2 includes a microlens array 21, a package portion 22, a liquid crystal portion 23, and a control portion 24. The liquid crystal unit 23 is a turning liquid crystal unit, and the liquid crystal molecules are turned liquid crystal molecules, and the long axis direction of the liquid crystal molecules is deflected in accordance with an applied voltage. The control unit 24 includes a power source, and the control unit 24 and the liquid crystal unit 23 are provided. Electrical connection.

At time T1, the display unit 1 displays image information corresponding to the first light control unit 20, and at this time, the first light control unit 20 is in an operating state (ie, in a 3D state, the refractive indices of the liquid crystal portion and the microlens are different) The second light control unit 30 and the third light control unit 40 are in an inoperative state (ie, the 2D state, the refractive index of the liquid crystal portion and the microlens column are the same), and therefore, only the first light control unit 20 functions, The first depth image 11 is displayed in its corresponding depth region as shown in FIG.

At the time T2, the display unit displays the image information corresponding to the second light modulating unit 30. At this time, the second light modulating unit 30 is in the guiding state, and the first light modulating unit 20 and the third light modulating unit 40 are in the non- In the guided state, therefore, only the second light modulating unit 30 functions to display the second depth image 12 in its corresponding depth region, as shown in FIG.

At time T3, the display unit displays the image information corresponding to the third light modulating unit 40. At this time, the third light modulating unit 40 is in the guiding state, and the first light modulating unit 20 and the second light modulating unit 30 are in the non- In the guided state, therefore, only the third light modulating unit 40 functions to display the third depth image 13 in its corresponding depth region, as shown in FIG.

The three light control units can display the corresponding images in three different depth regions, thereby forming a stereo image with a certain depth range to enhance the display depth of the system.

The integrated imaging display system in this embodiment can not only enhance the depth range of the stereo image, but also display 2D images, as shown in FIG. 13, the main method is to switch the three light control units to the non-guide state, at this time, the microlens The array does not have the effect of refracting light, so the observer can observe the 2D image on the display unit.

From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

The integrated imaging display system of the present application includes a plurality of light control units, and the stereoscopic images formed by the plurality of light control units correspond to a plurality of different depths, and control different light control units to work at different times, so that corresponding image information is obtained. By forming a stereoscopic image with a certain depth range at different depth positions, stereoscopic images of different positions can be obtained in sequence, which is equivalent to increasing the display depth of the system.

The above description is only the preferred embodiment of the present application, and is not intended to limit the present application, and various changes and modifications may be made to the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application are intended to be included within the scope of the present application.

Claims

An integrated imaging display system, characterized in that the integrated imaging display system comprises:

a display unit (1) for displaying an image;

a plurality of light control units (2) disposed on one side of the display unit (1), and the plurality of light control units (2) are sequentially arranged in a direction away from the display unit (1), and the plurality of The stereoscopic image formed by the light control unit (2) corresponds to a plurality of different depths, and the depth is a distance between the stereoscopic image and the display unit (1).
The integrated imaging display system according to claim 1, characterized in that at least one of the light control units (2) comprises a switchable lens structure and/or a switchable slit structure.
The integrated imaging display system of claim 2 wherein said switchable lens structure comprises a switchable lenticular lens or a switchable microlens array.
The integrated imaging display system of claim 2 wherein said switchable lens structure comprises:

a microlens array (21) comprising a plurality of microlenses arranged in sequence;

a liquid crystal portion (23) including a plurality of liquid crystal molecules, the liquid crystal portion (23) being disposed on one side of the microlens array (21);

a control unit (24) for controlling a refractive index of the liquid crystal portion (23) such that a refractive index of the liquid crystal portion (23) is not equal to a refractive index of the microlens array (21) in a guided state In the non-guided state, the refractive index of the liquid crystal portion (23) is equal to the refractive index of the microlens array (21).
The integrated imaging display system according to claim 4, wherein said liquid crystal portion (23) is a turning liquid crystal portion, said liquid crystal molecules are turned liquid crystal molecules, and said control portion (24) controls said turning liquid crystal molecules The turn.
The integrated imaging display system according to claim 4, wherein the liquid crystal portion (23) is a solidified liquid crystal portion, the liquid crystal molecules are solidified liquid crystal molecules, and the control portion (24) comprises:

a polarizing element (241) disposed on a side of the microlens array (21) adjacent to incident light, the polarizing element (241) for adjusting a polarization direction of incident light;

A polarization controller (242) for controlling the operating state of the polarizing element (241).
The integrated imaging display system of claim 2 wherein said switchable lens structure comprises:

The liquid crystal portion (23) includes a plurality of liquid crystal molecules, and the refractive index at different positions of the liquid crystal portion (23) is the same or different by applying an electric field, and the refractive index at different positions of the liquid crystal portion (23) At the same time, the switchable lens structure is in a non-guided state, and the switchable lens structure is in a guiding state when the refractive indices at different positions of the liquid crystal portion (23) are different.
The integrated imaging display system according to claim 1, characterized in that at least two adjacent light control units (2) are spaced apart.
The integrated imaging display system according to claim 1, characterized in that a transparent unit is arranged between at least two adjacent light control units (2).
The integrated imaging display system according to claim 1, wherein the display unit (1) is configured to display a plurality of images, and the light control unit (2) modulates signals of the image in a one-to-one correspondence And forming a stereoscopic image at the corresponding depth position.
The integrated imaging display system according to claim 1, wherein the integrated imaging display system further comprises: a control unit, the control unit is configured to control the operation of the display unit (1) and each of the light control The work of unit (2).