CN110012285A - A multi-view stereoscopic display device - Google Patents

A multi-view stereoscopic display device Download PDF

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CN110012285A
CN110012285A CN201910318373.6A CN201910318373A CN110012285A CN 110012285 A CN110012285 A CN 110012285A CN 201910318373 A CN201910318373 A CN 201910318373A CN 110012285 A CN110012285 A CN 110012285A
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liquid crystal
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CN110012285B (en
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吕国皎
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Chengdu Univeristy of Technology
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    • 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
    • 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
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/32—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using arrays of controllable light sources; using moving apertures or moving light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/349—Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking
    • H04N13/351—Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking for displaying simultaneously
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/363—Image reproducers using image projection screens

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  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Dispersion Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

本发明提出了一种多视点立体显示装置。该多视点立体显示装置由平面光显示面板、第一聚合物分散液晶板、第二聚合物分散液晶板及分光元件组成。第一及第二聚合物分散液晶板在散射和透明两种状态间不断交替，用于接收所述平面光显示面板投射的视差合成图像。同一时刻，仅有唯一的聚合物分散液晶板呈散射态。平面光显示面板投射的视差合成图像将成像于呈散射态的聚合物液晶板位置。分光元件可将成像于聚合物分散液晶板上的视差合成图像投射到不同的空间方向，因第一及第二分光聚合物分散液晶板位置不同，则可以形成不同最佳观看距离的视点。观看者可根据在不同的最佳观看距离上看到立体图像。

The present invention provides a multi-view stereoscopic display device. The multi-view stereoscopic display device is composed of a flat light display panel, a first polymer-dispersed liquid crystal panel, a second polymer-dispersed liquid crystal panel and a light-splitting element. The first and second polymer dispersed liquid crystal panels alternate between scattering and transparent states for receiving the parallax composite image projected by the flat light display panel. At the same time, only the only polymer dispersed liquid crystal panel is in the scattering state. The parallax composite image projected by the flat light display panel will be imaged at the position of the polymer liquid crystal panel in the scattering state. The light splitting element can project the parallax composite image formed on the polymer dispersed liquid crystal panel to different spatial directions. Due to the different positions of the first and second light splitting polymer dispersed liquid crystal panels, viewpoints with different optimal viewing distances can be formed. Viewers can see stereoscopic images at different optimal viewing distances.

Description

一种多视点立体显示装置A multi-view stereoscopic display device

技术领域technical field

本发明涉及显示技术，更具体地说，本发明涉及立体显示技术。The present invention relates to display technology, and more particularly, the present invention relates to stereoscopic display technology.

背景技术Background technique

3D显示技术是可以实现立体场景真实再现的一种显示技术，其可以为人眼分别提供不同的视差图像，从而使人产生立体视觉。通常立体显示由光栅和立体视差合成图像构成。通过精确耦合，立体视差合成图像像素可以被光栅投射到指定的方向，从而形成视点。当人眼分别处于不同视点时，左右眼可以分别看到不同的视差图像，从而产生立体视觉。然而传统立体显示装置仅能在最佳观看距离位置上显示对应的立体视差图像。因此，本发明提出了一种多视点立体显示装置，该装置相对于传统立体显示装置具有更广的观看范围。3D display technology is a display technology that can realize the true reproduction of stereoscopic scenes, and it can provide different parallax images for human eyes, so that people can produce stereoscopic vision. Usually a stereoscopic display consists of a grating and a stereoscopic parallax composite image. Through precise coupling, stereoscopic parallax composite image pixels can be raster projected into specified directions to form viewpoints. When the human eyes are at different viewpoints, the left and right eyes can see different parallax images respectively, thereby generating stereoscopic vision. However, the conventional stereoscopic display device can only display the corresponding stereoscopic parallax images at the best viewing distance position. Therefore, the present invention proposes a multi-view stereoscopic display device, which has a wider viewing range than conventional stereoscopic display devices.

发明内容SUMMARY OF THE INVENTION

本发明提出了一种多视点立体显示装置。附图1为该多视点立体显示装置的结构示意图。该多视点立体显示装置由平面光显示面板、第一聚合物分散液晶板、第二聚合物分散液晶板及分光元件组成。所述平面光显示面板用以投射视差合成图像。其显示的视差合成图像中每个像素所发出的光线均为平行光束，仅在一个空间方向上传播。所述第一聚合物分散液晶板及所述第二聚合物分散液晶板放置于平面光显示面板之前，用于接收所述平面光显示面板投射的视差合成图像。所述第一聚合物分散液晶板、所述第二聚合物分散液晶可在散射和透明两种状态间转换。同一时刻，仅有唯一的一块聚合物分散液晶板呈散射态。当第一聚合物液晶板呈散射态，第二聚合物液晶板呈透明态时，则所述平面光显示面板投射的视差合成图像将成像于第一聚合物液晶板位置。反之，当第一聚合物液晶板呈透明态，第二聚合物液晶板呈散射态时，则所述平面光显示面板投射的视差合成图像将成像于第二聚合物液晶板位置。分光元件置于所述第一聚合物分散液晶板及所述第二聚合物分散液晶板之前，用以将成像于聚合物分散液晶板上的视差合成图像投射到不同的空间方向，以形成视点。当人眼分处于不同视点位置时可以看到与之对应的视差图像，从而产生立体视觉。The present invention provides a multi-view stereoscopic display device. FIG. 1 is a schematic structural diagram of the multi-view stereoscopic display device. The multi-view stereoscopic display device is composed of a flat light display panel, a first polymer-dispersed liquid crystal panel, a second polymer-dispersed liquid crystal panel and a light-splitting element. The flat light display panel is used for projecting a parallax composite image. The light emitted by each pixel in the parallax composite image it displays is a parallel light beam that propagates only in one spatial direction. The first polymer-dispersed liquid crystal panel and the second polymer-dispersed liquid crystal panel are placed in front of the flat light display panel for receiving a parallax composite image projected by the flat light display panel. The first polymer-dispersed liquid crystal panel and the second polymer-dispersed liquid crystal can switch between scattering and transparent states. At the same time, only one polymer-dispersed liquid crystal panel is in a scattering state. When the first polymer liquid crystal panel is in a scattering state and the second polymer liquid crystal panel is in a transparent state, the parallax composite image projected by the flat light display panel will be imaged at the position of the first polymer liquid crystal panel. On the contrary, when the first polymer liquid crystal panel is in a transparent state and the second polymer liquid crystal panel is in a scattering state, the parallax composite image projected by the flat light display panel will be imaged at the position of the second polymer liquid crystal panel. The spectroscopic element is placed in front of the first polymer dispersion liquid crystal panel and the second polymer dispersion liquid crystal panel to project the parallax composite image formed on the polymer dispersion liquid crystal panel to different spatial directions to form viewpoints . When the human eyes are located at different viewpoint positions, the corresponding parallax images can be seen, thereby generating stereoscopic vision.

设分光元件的节距为p，视差合成图像中水平方向上属于同一视差图像的像素节距为l，第一聚合物分散液晶板到分光元件的间距为d1，第二聚合物分散液晶板到分光元件的间距为d2，当视差合成图像成像于第一聚合物液晶板位置时，最佳观看距离为D1，当视差合成图像成像于第二聚合物液晶板位置时，最佳观看距离为D2，则上述参数满足D1=pd1/(l-p)及D2=pd2/(l-p)。Let the pitch of the spectroscopic element be p , the pitch of pixels belonging to the same parallax image in the horizontal direction in the parallax composite image is l , the distance from the first polymer dispersed liquid crystal panel to the light splitting element is d 1, and the second polymer dispersed liquid crystal panel is d 1 . The distance to the light splitting element is d 2. When the parallax composite image is imaged at the position of the first polymer liquid crystal panel, the optimal viewing distance is D 1. When the parallax composite image is imaged at the position of the second polymer liquid crystal panel, the best viewing distance is If the distance is D 2, the above parameters satisfy D 1= pd 1/( l - p ) and D 2 = pd 2/( l - p ).

时分复用地，所述第一聚合物分散液晶板及所述第二聚合物分散液晶板的散射及透明状态交替转换，并由平行光显示面板分别提供与之最佳观看距离对应的视差合成图像。In a time-division multiplexing manner, the scattering and transparent states of the first polymer-dispersed liquid crystal panel and the second polymer-dispersed liquid crystal panel are alternately converted, and the parallax synthesis corresponding to the optimal viewing distance is provided by the parallel light display panel respectively. image.

可选地，分光元件可以为狭缝光栅也可以为柱透镜光栅。Optionally, the light splitting element can be a slit grating or a cylindrical lens grating.

可选地，可设置额外的聚合物分散液晶板以形成更多视点。Optionally, additional polymer dispersed liquid crystal panels can be provided to form more viewpoints.

可选地，平行光显示面板以平行光源和液晶显示面板的组合形式出现。Optionally, the parallel light display panel appears in the form of a combination of a parallel light source and a liquid crystal display panel.

可选地，对平行光显示面板所发出的光线平行度要求不高时，平行光显示面板可替换为投影机。Optionally, when the parallelism of the light emitted by the parallel light display panel is not high, the parallel light display panel can be replaced with a projector.

本发明中，由于所述第一聚合物分散液晶板及所述第二聚合物分散液晶板在散射和透明两种状态间不断交替，观看者可在不同的最佳观看距离上看到立体图像。In the present invention, since the first polymer-dispersed liquid crystal panel and the second polymer-dispersed liquid crystal panel constantly alternate between scattering and transparent states, viewers can see stereoscopic images at different optimal viewing distances .

附图说明Description of drawings

为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

图1为本发明的结构示意图。FIG. 1 is a schematic structural diagram of the present invention.

图2为本发明中聚合物分散液晶板的原理示意图。FIG. 2 is a schematic diagram of the principle of the polymer dispersed liquid crystal panel in the present invention.

图3为本发明实现远视距的原理示意图。FIG. 3 is a schematic diagram of the principle of realizing a far-sighted distance according to the present invention.

图标：010-多视点立体显示装置；100-平面光显示面板；210-第一聚合物分散液晶板；220-第二聚合物分散液晶板；300-分光元件； 020-聚合物分散液晶板光路；030-远视距模式光路。Icon: 010-multi-viewpoint stereoscopic display device; 100-flat light display panel; 210-first polymer-dispersed liquid crystal panel; 220-second polymer-dispersed liquid crystal panel; 300-spectroscopy element; 020-polymer-dispersed liquid crystal panel optical path ; 030 - Optical path for long-sighted mode.

应该理解上述附图只是示意性的，并没有按比例绘制。It should be understood that the above drawings are schematic only and are not drawn to scale.

具体实施方式Detailed ways

为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

实施例Example

图1为本实施例提供的多视点立体显示装置010的结构示意图。图中x坐标表示空间中的水平方向，y坐标表示空间中的垂直方向，z表示与x-y平面垂直的方向。请参照图1，本实施例提供一种多视点立体显示装置010，由平面光显示面板100、第一聚合物分散液晶板210、第二聚合物分散液晶板220及分光元件300组成。FIG. 1 is a schematic structural diagram of a multi-view stereoscopic display device 010 according to this embodiment. In the figure, the x coordinate represents the horizontal direction in space, the y coordinate represents the vertical direction in space, and z represents the direction perpendicular to the x-y plane. 1 , the present embodiment provides a multi-view stereoscopic display device 010 , which is composed of a flat light display panel 100 , a first polymer-dispersed liquid crystal panel 210 , a second polymer-dispersed liquid crystal panel 220 and a light-splitting element 300 .

下面对本实施例提供的多视点立体显示装置010进行进一步说明。The multi-view stereoscopic display device 010 provided in this embodiment will be further described below.

所述平面光显示面板100用以投射视差合成图像。所述平面光显示面板100由平行光源和液晶显示面板的组合而成。平行光源由点光源及透镜构成，点光源放置透镜的焦点位置，由点光源发射的光线经透镜折射后可形成平行光束。液晶显示面板放置于透镜之前，由透镜折射形成的平行光束可将液晶显示面板提供的视差合成图像进行投射。则其显示的视差合成图像中每个像素所发出的光线均为平行光束，且仅在一个空间方向上传播。The flat light display panel 100 is used to project a parallax composite image. The flat light display panel 100 is formed by a combination of a parallel light source and a liquid crystal display panel. The parallel light source is composed of a point light source and a lens. The point light source is placed at the focal position of the lens, and the light emitted by the point light source can be refracted by the lens to form a parallel beam. The liquid crystal display panel is placed in front of the lens, and the parallel light beam formed by the refraction of the lens can project the parallax composite image provided by the liquid crystal display panel. Then the light emitted by each pixel in the parallax composite image displayed by it is a parallel light beam and only propagates in one spatial direction.

所述第一聚合物分散液晶板210、所述第二聚合物分散液晶板220放置于平面光显示面板100之前，用于接收所述平面光显示面板100投射的视差合成图像。请参照图2，第一聚合物分散液晶板210与第二聚合物分散液晶板220相同，其上下两层聚合物材料上设置有电极，电极之间设置有均匀分布的液晶微粒，可在散射和透明两种状态间进行切换。聚合物分散液晶板光路020可参考图2。当在聚合物分散液晶板300的电极上不施加电压时，电极间不能形成有规律的电场，液晶微粒的光轴取向随机，呈现无序状态，其有效折射率不与聚合物的折射率匹配，入射光线被强烈散射。当在电极间施加电压时，液晶微粒的折射率与聚合物的折射率基本匹配，聚合物液晶板300呈透明状，入射光不会发生散射。The first polymer-dispersed liquid crystal panel 210 and the second polymer-dispersed liquid crystal panel 220 are placed before the flat light display panel 100 to receive a parallax composite image projected by the flat light display panel 100 . Please refer to FIG. 2 , the first polymer dispersed liquid crystal panel 210 is the same as the second polymer dispersed liquid crystal panel 220 , electrodes are arranged on the upper and lower layers of polymer materials, and evenly distributed liquid crystal particles are arranged between the electrodes. Switch between two states: transparent and transparent. Refer to FIG. 2 for the optical path 020 of the polymer dispersed liquid crystal panel. When no voltage is applied to the electrodes of the polymer-dispersed liquid crystal panel 300, a regular electric field cannot be formed between the electrodes, the optical axis of the liquid crystal particles is randomly oriented, and presents a disordered state, and the effective refractive index of the liquid crystal particles does not match the refractive index of the polymer. , the incident light is strongly scattered. When a voltage is applied between the electrodes, the refractive index of the liquid crystal particles substantially matches the refractive index of the polymer, and the polymer liquid crystal panel 300 is transparent, and the incident light will not be scattered.

同一时刻，仅有唯一的一块聚合物分散液晶板呈散射态。当第一聚合物液晶板210呈散射态，第二聚合物液晶板220呈透明态时，则所述平面光显示面板100投射的视差合成图像将成像于第一聚合物液晶板210位置。反之，当第一聚合物液晶板210呈透明态，第二聚合物液晶板220呈散射态时，则所述平面光显示面板100投射的视差合成图像将成像于第二聚合物液晶板220位置。At the same time, there is only one polymer dispersed liquid crystal panel in the scattering state. When the first polymer liquid crystal panel 210 is in a scattering state and the second polymer liquid crystal panel 220 is in a transparent state, the parallax composite image projected by the flat light display panel 100 will be imaged at the position of the first polymer liquid crystal panel 210 . On the contrary, when the first polymer liquid crystal panel 210 is in a transparent state and the second polymer liquid crystal panel 220 is in a scattering state, the parallax composite image projected by the flat light display panel 100 will be imaged at the position of the second polymer liquid crystal panel 220 . .

分光元件300由狭缝光栅制备而成，置于所述第一聚合物分散液晶板210及所述第二聚合物分散液晶板200之前，用以将成像于聚合物分散液晶板上的视差合成图像投射到不同的空间方向，以形成视点。The spectroscopic element 300 is made of a slit grating and is placed in front of the first polymer dispersed liquid crystal panel 210 and the second polymer dispersed liquid crystal panel 200 to synthesize the parallax imaged on the polymer dispersed liquid crystal panel Images are projected into different spatial directions to form viewpoints.

本实施例中，作为分光元件300的狭缝光栅其节距p为2 mm，视差合成图像中水平方向上属于同一视差图像的像素节距l为2.01 mm，第一聚合物分散液晶板210到分光元件300的间距d1为5 mm，第二聚合物分散液晶板220到分光元件300的间距d2为6 mm。In this embodiment, the pitch p of the slit grating as the light splitting element 300 is 2 mm , the pixel pitch l of the same parallax image in the horizontal direction in the parallax composite image is 2.01 mm , and the first polymer dispersed liquid crystal panel 210 to The distance d 1 of the light-splitting element 300 is 5 mm , and the distance d 2 of the second polymer dispersed liquid crystal panel 220 to the light-splitting element 300 is 6 mm .

请参考图1，视差合成图像成像于第一聚合物液晶板210位置时，最佳观看距离D1为1000 mm，可在距离分光元件300位置1000 mm处形成视点。上述参数满足D1=pd1/(l-p)。Referring to FIG. 1 , when the parallax composite image is formed at the position of the first polymer liquid crystal panel 210 , the optimal viewing distance D 1 is 1000 mm , and a viewpoint can be formed at a distance of 1000 mm from the position of the light splitting element 300 . The above parameters satisfy D 1= pd 1/( l - p ).

请参考图3，当视差合成图像成像于第二聚合物液晶板220位置时，最佳观看距离D2为1200 mm，可在距离分光元件300位置1200 mm处形成视点。上述参数满足D2=pd2/(l-p)。Referring to FIG. 3 , when the parallax composite image is formed on the second polymer liquid crystal panel 220 , the optimal viewing distance D 2 is 1200 mm , and a viewpoint can be formed at a distance of 1200 mm from the position of the light splitting element 300 . The above parameters satisfy D 2 = pd 2/( l - p ).

时分复用地，所述第一聚合物分散液晶板210及所述第二聚合物分散液晶板220的散射及透明状态交替转换，并由平行光显示面板100分别提供与之最佳观看距离对应的视差合成图像。则可以在最佳观看距离1000 mm及1200 mm位置处形成多个视点。当人眼分处于不同视点位置时可以看到与之对应的视差图像，从而产生立体视觉。In a time-division multiplexing manner, the scattering and transparent states of the first polymer-dispersed liquid crystal panel 210 and the second polymer-dispersed liquid crystal panel 220 are alternately switched, and the parallel light display panel 100 provides the corresponding optimal viewing distances respectively. parallax composite image. Multiple viewpoints can be formed at the optimal viewing distances of 1000 mm and 1200 mm . When the human eyes are located at different viewpoint positions, the corresponding parallax images can be seen, thereby generating stereoscopic vision.

本发明中，由于所述第一聚合物分散液晶板210及所述第二聚合物分散液晶板220在散射和透明两种状态间不断交替，观看者可在不同的最佳观看距离上看到立体图像。In the present invention, since the first polymer-dispersed liquid crystal panel 210 and the second polymer-dispersed liquid crystal panel 220 are constantly alternated between scattering and transparent states, viewers can see at different optimal viewing distances. Stereoscopic image.

Claims (7)

1. a kind of multi-viewpoint three-dimensional display device, it is characterised in that: the multi-viewpoint three-dimensional display device by planar light display panel, First polymer dispersed LCD plate, second polymer dispersed LCD plate and beam splitter composition, the planar light display panel are used To project synthesized parallax image, the light that each pixel is issued in the synthesized parallax image of display is collimated light beam, only It is propagated on a direction in space, the first polymer dispersed LCD plate and the second polymer dispersed LCD plate are placed in Before planar light display panel, for receiving the synthesized parallax image of the planar light display panel projection, first polymerization Object dispersed LCD plate, the second polymer dispersed LCD can be converted between scattering and transparent two states, synchronization, only Unique one block of polymer dispersed liquid crystals plate is in scattering states, when first polymer liquid crystal board is in scattering states, second polymer liquid crystal When the transparent state of plate, then the synthesized parallax image of the planar light display panel projection will image in first polymer liquid crystal board position It sets, conversely, working as the transparent state of first polymer liquid crystal board, when second polymer liquid crystal board is in scattering states, then the planar light is aobvious Show that the synthesized parallax image of panel projection will image in second polymer liquid crystal Board position, beam splitter is placed in first polymerization Before object dispersed LCD plate and the second polymer dispersed LCD plate, to the view that will be imaged on polymer dispersed liquid crystals plate Poor composograph projects different direction in spaces, to form viewpoint, can see when human eye point is in different points of view position Corresponding anaglyph, to generate stereoscopic vision.
2. a kind of multi-viewpoint three-dimensional display device as described in claim 1, it is characterised in that: set the pitch of beam splitter asp, The pixel pitch for belonging to same anaglyph in synthesized parallax image in horizontal direction isl, first polymer dispersed LCD plate arrives The spacing of beam splitter 300 isd1, the spacing of second polymer dispersed LCD plate 220 to beam splitter 300 isd2, when parallax closes When imaging in first polymer 210 position of liquid crystal board at image, viewing ratio isD1, when synthesized parallax image images in When dimerization object 220 position of liquid crystal board, viewing ratio isD2, then above-mentioned parameter meetsD1=pd1/(l-p) andD2=pd2/ (l-p)。
3. a kind of multi-viewpoint three-dimensional display device as described in claim 1, it is characterised in that: time division multiplexing ground, described first The scattering of polymer dispersed liquid crystals plate and the second polymer dispersed LCD plate and pellucidity are alternately converted, and by directional light Display panel provides the corresponding synthesized parallax image of viewing ratio therewith respectively.
4. a kind of multi-viewpoint three-dimensional display device as described in claim 1, it is characterised in that: beam splitter can be slit light Grid may be Lenticular screen.
5. a kind of multi-viewpoint three-dimensional display device as described in claim 1, it is characterised in that: settable additional polymer point Liquid crystal board is dissipated to form more multiple views.
6. a kind of multi-viewpoint three-dimensional display device as described in claim 1, it is characterised in that: directional light display panel is with parallel The combination of light source and liquid crystal display panel is constituted.
7. a kind of multi-viewpoint three-dimensional display device as described in claim 1, it is characterised in that: sent out directional light display panel When light ray parallel degree out is of less demanding, directional light display panel can be replaced projector.
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