Multi-mode stereoscopic display device

Abstract

The present invention proposes a multi-mode stereoscopic display device. The multi-mode stereoscopic display device is composed of a 2D display panel, a lens array and a transparent liquid crystal display panel; the 2D display panel is used to provide a mode image, the mode image is composed of a bright spot array, and the pitch and position of the bright spot array are adjustable; the transparent liquid crystal display panel is used to provide a parallax image, which does not change the propagation direction of light; the lens array is located in the middle, which is used to project an image; the present invention presets multiple viewing zones in space, and the viewing zones are arranged in space to form a viewing zone array; each viewing zone corresponds to a mode of the multi-mode stereoscopic display device; in each mode, the 2D display panel has a corresponding mode image; in time division multiplexing, the 2D display panel sequentially provides the mode image of each viewing zone, and the transparent liquid crystal display panel sequentially provides the parallax image corresponding to each viewing zone; when the two eyes of the viewer are in different viewing zones, they can see the corresponding parallax images respectively, thereby generating stereoscopic vision.

Description

Technical Field

[0001] The present invention relates to display technology, and more particularly, to stereoscopic display technology. Background Art

[0002] Stereoscopic display technology is a display technology that can achieve true reproduction of stereoscopic scenes. It can provide different parallax images to the human eye, so that people can have stereoscopic vision. Traditional stereoscopic display devices have limited viewpoints and resolution, and it is difficult to provide highly realistic stereoscopic images. The present invention proposes a multi-mode stereoscopic display device, which can provide a large number of viewpoints and high-resolution images, thereby improving the stereoscopic display effect. Summary of the invention

[0003] The present invention provides a multi-mode stereoscopic display device. Figure 1 The structure diagram of the multi-mode stereoscopic display device is shown in Figure 1. The multi-mode stereoscopic display device is composed of a 2D display panel, a lens array and a transparent liquid crystal display panel. The 2D display panel, the lens array and the transparent liquid crystal display panel are placed in sequence, with the 2D display panel placed at the end, the lens array placed in the middle, and the transparent liquid crystal display panel placed at the front.

[0004] Please refer to Figure 2 The 2D display panel is used to provide a pattern image, which is composed of a bright spot array, and the pitch and position of the bright spot array are adjustable.

[0005] Please refer to Figure 3 The transparent liquid crystal display panel is a low-scattering and high-transmittance liquid crystal panel used to provide parallax images without changing the direction of light propagation.

[0006] Please refer to Figure 3 , the lens array is located in the middle, which can project and converge the light emitted by the bright spots of the pattern image on the 2D display panel to a certain viewing area position in the space.

[0007] Please refer to Figure 4 The present invention presets a plurality of viewing zones in the space, and the viewing zones are arranged in the space to form a viewing zone array, each of which corresponds to a mode of the multi-mode stereoscopic display device.

[0008] Please refer to Figure 4 In each mode, the 2D display panel has a corresponding mode image. In time division multiplexing, the 2D display panel sequentially provides the mode images of each viewing area, and the transparent liquid crystal display panel sequentially provides the parallax images corresponding to each viewing area. When the two eyes of the viewer are in different viewing areas, they can see the corresponding parallax images respectively, thus generating stereoscopic vision.

[0009] Please refer to Figure 4In a certain horizontal plane of the multi-mode stereoscopic display device, the optimal viewing distance from a certain viewing area to the lens array is D , the distance from the lens array to the 2D display panel is d , the bright spot pitch in the horizontal direction in the pattern image is p h , the lens array pitch is p l , then the horizontal bright spot pitch of the pattern image satisfies: Please refer to Figure 2 and Figure 4 , for different horizontal viewing areas at the same optimal viewing distance, they have the same pattern image bright spot pitch p h , but the difference in the bright spot position in the pattern image corresponding to the two viewing zones Δ f h satisfy: , where Δ l is the difference in the horizontal positions of the two viewports. Figure 4 , assuming that the pixel pitch on the 2D display panel is w , the displacement of adjacent viewing areas is l ,but w Should meet: .

[0010] Furthermore, similarly, within a certain vertical plane of the multi-mode stereoscopic display device, the present invention sets the mode image parameters completely in accordance with the above rules.

[0011] Alternatively, the lens array may be replaced by a rod lens grating.

[0012] Optionally, the array of bright spots of the pattern image may be replaced by bright stripes.

[0013] Optionally, in combination with a face position recognition device, the 2D display panel sequentially provides pattern images corresponding to the positions of the left and right eyes of a person, and the transparent liquid crystal display panel sequentially provides disparity images corresponding to the left and right eyes of a person, in a time-division multiplexed manner. The viewer's two eyes can then see the corresponding disparity images respectively, thereby producing stereoscopic vision.

[0014] Different from traditional stereoscopic display devices, during the image projection process, the 2D display panel of the present invention only controls the projection direction but does not provide a parallax image. The parallax image is provided by a transparent liquid crystal display panel, thereby realizing full-resolution stereoscopic image display. In addition, the present invention controls the projected viewing area position by a pattern image on the 2D display panel, which can conveniently realize stereoscopic image display with multiple viewpoints and multiple optimal viewing distances. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 This is a pattern image of the present invention.

[0018] Figure 3 The schematic diagram is shown for realizing the present invention.

[0019] Figure 4 It is a structural diagram of the viewing area array parameters of the present invention.

[0020] Icon: 100 - 2D display panel; 200 - lens array; 300 - transparent liquid crystal display panel; 400 - viewing area array; 40305 - the viewing area located in the third row and fifth column of the array.

[0021] It should be understood that the above drawings are only schematic and are not drawn to scale. DETAILED DESCRIPTION

[0022] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the embodiments of the present invention, it should be noted that the terms “first”, “second”, etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. Example

[0026] Figure 1 A schematic structural diagram of a multi-mode stereoscopic display device provided in this embodiment. Figure 1 middle, x represents the horizontal direction in space, y represents the vertical direction in space, z represents the direction perpendicular to the image display surface of the multi-mode stereoscopic display device, Figure 2 , Figure 3 and Figure 4 In the definition of coordinate system, Figure 1 The multi-mode stereoscopic display device is composed of a 2D display panel 100, a lens array 200 and a transparent liquid crystal display panel 300. The 2D display panel 100, the lens array 200 and the transparent liquid crystal display panel 300 are placed in sequence, with the 2D display panel 100 placed at the end, the lens array 200 placed in the middle, and the transparent liquid crystal display panel 300 placed at the front.

[0027] Please refer to Figure 2 The 2D display panel 100 is used to provide a pattern image, and the pattern image is composed of a bright spot array, and the pitch and position of the bright spot array are adjustable.

[0028] Please refer to Figure 3 The transparent liquid crystal display panel 300 is a low-scattering and high-transmittance liquid crystal panel for providing a parallax image. When light passes through the transparent liquid crystal display panel 300, the propagation direction does not change.

[0029] Please refer to Figure 3 , the lens array 200 is located in the middle, which can project and converge the light emitted by the bright spots of the pattern image on the 2D display panel 100 to a certain viewing area position in the space.

[0030] Please refer to Figure 4 The present invention presets a plurality of viewing zones in the space, and the viewing zones are arranged in the space to form a viewing zone array, each of which corresponds to a mode of the multi-mode stereoscopic display device.

[0031] Please refer to Figure 4 In each mode, the 2D display panel 100 has a corresponding mode image. In time division multiplexing, the 2D display panel 100 sequentially provides mode images for each viewing area, and the transparent liquid crystal display panel 300 sequentially provides parallax images corresponding to each viewing area. When the two eyes of the viewer are in different viewing areas, they can see the corresponding parallax images respectively, thereby generating stereoscopic vision.

[0032] Please refer to Figure 4 In a certain horizontal plane of the multi-mode stereoscopic display device, the optimal viewing distance from the viewing area 40305 in the third row and fifth column of the viewing area array to the lens array 200 is Dis 500 mm, and the distance between the lens array 200 and the 2D display panel 100 d The lens array pitch is 5 mm. p l The horizontal bright spot pitch in the pattern image is 3 mm. p h Then it is 3.03 mm, which satisfies: .

[0033] Please refer to Figure 2 and Figure 4 For different horizontal viewing zones at the same optimal viewing distance, they have the same pattern image bright spot pitch, but the bright spot positions in the pattern images corresponding to the two viewing zones are different. For details, please refer to Figure 4 , taking the third row of viewing areas as an example, the displacement of adjacent viewing areas l is 50 mm, then the difference in the bright spot position Δ in the pattern images corresponding to the two viewing zones is f h is 0.5 mm, which satisfies , where Δ l The difference between the horizontal positions of the two viewing areas is 50 mm.

[0034] Please refer to Figure 4 , the pixel pitch on a 2D display panel w 0.1 mm, w satisfy: .

[0035] Furthermore, in a certain vertical plane of the multi-mode stereoscopic display device, the mode image parameters in the vertical direction of the present invention remain consistent with those in the horizontal direction.

[0036] Different from the traditional stereoscopic display device, in the image projection process, the 2D display panel 100 of the present invention only controls the projection direction but does not provide a parallax image. The parallax image is provided by the transparent liquid crystal display panel 300, thereby realizing full-resolution stereoscopic image display. In addition, the present invention controls the projected viewing area position by the pattern image on the 2D display panel 100, which can conveniently realize stereoscopic image display with multiple viewpoints and multiple optimal viewing distances.

Claims

1. A multi-mode stereoscopic display device, characterized in that: The multi-mode stereoscopic display device is composed of a 2D display panel, a lens array and a transparent liquid crystal display panel; the 2D display panel, the lens array and the transparent liquid crystal display panel are placed in sequence, with the 2D display panel at the end, the lens array in the middle, and the transparent liquid crystal display panel at the front; The 2D display panel is used to provide a pattern image, which is composed of a bright spot array, and the pitch and position of the bright spot array are adjustable; the transparent liquid crystal display panel is a low-scattering and high-transmittance liquid crystal panel, which is used to provide a parallax image, which does not change the propagation direction of light; the lens array is located in the middle, which can project and converge the light emitted by the bright spots of the pattern image on the 2D display panel to a certain viewing area position in the space; multiple viewing areas are preset in the space, and the viewing areas are arranged in the space to form a viewing area array; each viewing area corresponds to a mode of the multi-mode stereoscopic display device; in each mode, the 2D display panel has a corresponding pattern image; in time-division multiplexing, the 2D display panel sequentially provides the pattern image of each viewing area, and the transparent liquid crystal display panel sequentially provides the parallax image corresponding to each viewing area; when the two eyes of the viewer are in different viewing areas, they can see the corresponding parallax images respectively, thereby generating stereoscopic vision; in any horizontal plane of the multi-mode stereoscopic display device, the optimal viewing distance from a certain viewing area to the lens array is D , the distance from the lens array to the 2D display panel is d , the bright spot pitch in the horizontal direction in the pattern image is p h , the lens array pitch is p l , then the horizontal bright spot pitch of the pattern image satisfies: ; For different horizontal viewing areas at the same optimal viewing distance, they have the same pattern image bright spot pitch p h , but the difference in the bright spot position in the pattern image corresponding to the two viewing zones Δ f h satisfy: , where Δ l is the horizontal position difference of the two viewing areas; let the pixel pitch on the 2D display panel be w , the displacement of adjacent viewing areas is l ,but w Should meet: ; In any vertical plane of the multi-mode stereoscopic display device, the pattern image parameters are set completely in accordance with the rules in the horizontal plane; in conjunction with the face position recognition device, the 2D display panel provides pattern images corresponding to the positions of the left and right eyes of a person in time division multiplexing, and the transparent liquid crystal display panel provides parallax images corresponding to the left and right eyes of a person in turn.

2. A multi-mode stereoscopic display device as claimed in claim 1, characterized in that: The lens array is replaced by a cylindrical lens grating.

3. The multi-mode stereoscopic display device according to claim 1, characterized in that: The array of bright dots in the pattern image is replaced by bright stripes.

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