Large viewing angle composite imaging display device

Abstract

To address the limited viewing angle of traditional stereoscopic displays, the present invention proposes a wide-viewing-angle composite imaging display device. This device comprises a first 2D display panel, a first lens array, a second 2D display panel, and a second lens array; the second 2D display panel is a transparent liquid crystal display panel. The first 2D display panel and the first lens array form a first stereoscopic display structure; the second 2D display panel and the second lens array form a second stereoscopic display structure. The first stereoscopic display structure displays an aperture array at the location of the second lens array. The apertures formed by time-division multiplexing in the first stereoscopic display structure of the present invention can increase the display area used for imaging, thereby effectively increasing the viewing angle of the second stereoscopic display structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of stereoscopic display, and more particularly, to a composite imaging display device with a large viewing angle. Background Art

[0002] Traditional integrated imaging or grating 3D display devices use a spectroscopic element made of a lens array and a cylindrical lens grating to split light, and pixels at different positions can be projected to different spatial directions by the spectroscopic element. The viewing angle of its display usually depends on the pitch and focal length of the spectroscopic element. When the ratio of the pitch to the focal length is larger, the viewing angle is usually larger. However, due to the refractive index of the spectroscopic element material, the pitch-to-focal length ratio of conventional lens arrays and cylindrical lens gratings is limited, so the viewing angle of traditional integrated imaging and grating 3D display devices is limited. To solve this problem, the present invention proposes a large-viewing-angle composite imaging display device. The display device can use an aperture to effectively increase the viewing angle of integrated imaging and grating 3D displays. Summary of the Invention

[0003] In order to solve the problem of limited viewing angle of traditional stereoscopic displays, the present invention proposes a composite imaging display device with a large viewing angle.

[0004] The large viewing angle composite imaging display device comprises a first 2D display panel, a first lens array, a second 2D display panel, and a second lens array; wherein the second 2D display panel is a transparent liquid crystal display panel.

[0005] The first 2D display panel, the first lens array, the second 2D display panel, and the second lens array are placed in sequence from back to front.

[0006] Preferably, the first lens array is placed in close contact with the second 2D display panel.

[0007] The focal length of the second lens array is f 2. The second lens array pitch is p .

[0008] The distance from the second 2D display panel to the second lens array is equal to the focal length of the second lens array f 2.

[0009] The focal length of the first lens array is f 1. The distance from the first 2D display panel to the first lens array is l 1; the distance from the first lens array to the second lens array is l 2, and there is .

[0010] Optionally, replace for l 1= f 1.

[0011] The first 2D display panel and the first lens array form a first three-dimensional display structure.

[0012] The second 2D display panel and the second lens array form a second three-dimensional display structure.

[0013] The first three-dimensional display structure displays an aperture array at the position of the second lens array, and the periodic pitch of the aperture array is np , n is a positive integer greater than or equal to 2, and the aperture array has an opening of p light-transmitting gaps.

[0014] In a time-division multiplexing manner, the first stereoscopic display structure changes the position of the aperture array so that the light-transmitting slits of the aperture array alternately overlap with each lens on the second lens array; at the same time, the second 2D display panel synchronously provides an image element array that matches the lenses that overlap with the light-transmitting slits, thereby realizing stereoscopic display.

[0015] Assume that the viewing angle of the large viewing angle composite imaging display device is θ , then .

[0016] Optionally, the first lens array is replaced by a cylindrical lens grating.

[0017] Optionally, the second lens array is replaced by a cylindrical lens grating.

[0018] When the first lens array or the second lens array is replaced with a cylindrical lens grating, it can be applied to grating 3D display.

[0019] In summary, the aperture formed by time division multiplexing in the present invention can increase the display area for imaging, thereby effectively increasing the viewing angle, compared with the viewing angle in the traditional mode. The large viewing angle composite imaging display device can increase the viewing angle to However, due to the frequency division effect of time division multiplexing, the frame rate of the image will also drop to 1 / 1 of the original image refresh rate. n . BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 This is a principle diagram of the first time slot optical path of the present invention.

[0022] Figure 3 This is a schematic diagram of the optical path principle of the second time slot of the present invention.

[0023] Icon: 100 - first 2D display panel; 200 - first lens array; 300 - second 2D display panel; 400 - second lens array; 500 - aperture; 600 - image element.

[0024] It should be understood that the above drawings are merely schematic and not drawn to scale. DETAILED DESCRIPTION

[0025] Figure 1 This embodiment provides a large-viewing-angle composite imaging display device.

[0026] The large viewing angle composite imaging display device includes a first 2D display panel 100 , a first lens array 200 , a second 2D display panel 300 , and a second lens array 400 ; wherein the second 2D display panel 300 is a transparent liquid crystal display panel.

[0027] The first 2D display panel 100 , the first lens array 200 , the second 2D display panel 300 , and the second lens array 400 are placed in sequence from back to front.

[0028] The first lens array 200 is placed closely to the second 2D display panel 300 , and the thickness of the second 2D display panel 300 is 1 mm.

[0029] The second lens array has a focal length of 400 f 2=3 mm, second lens array 400 pitch p =3 mm.

[0030] The distance from the second 2D display panel 300 to the second lens array 400 is equal to the focal length of the second lens array 400. f 2.

[0031] The focal length of the first lens array 200 f 1 = 1 mm, the distance from the first 2D display panel 100 to the first lens array 200 l 1=1.333 mm; distance from the first lens array 200 to the second lens array 400 l 2=4 mm, which satisfies .

[0032] The first 2D display panel 100 and the first lens array 200 form a first three-dimensional display structure.

[0033] The second 2D display panel 300 and the second lens array 400 form a second three-dimensional display structure.

[0034] The first three-dimensional display structure displays the aperture 500 array at the position of the second lens array 400, and the periodic pitch of the aperture 500 array is np =6 mm, n=2, the aperture 500 array has an opening of p =3 mm light transmission gap.

[0035] In a time-division multiplexing manner, the first stereoscopic display structure changes the position of the aperture 500 array so that the light-transmitting slits of the aperture 500 array alternately overlap with each lens on the second lens array 400; at the same time, the second 2D display panel 300 synchronously provides an array of image elements 600 that match the lenses that overlap with the light-transmitting slits, thereby realizing stereoscopic display.

[0036] Please refer to Figure 2 , in the first time slot, the width is np = 6 mm image element 600 is emitted through the lens that coincides with the light-transmitting slit, so its viewing angle is θ due , that is 90°.

[0037] Please refer to Figure 3 In the second time slot, the first stereoscopic display structure changes the position of the aperture 500 array so that the light-transmitting slits of the aperture 500 array coincide with other lenses on the second lens array 400. At the same time, the second 2D display panel 300 synchronously provides an array of image elements 600 that matches the lenses that coincide with the light-transmitting slits, and its viewing angle remains unchanged, also satisfying the viewing angle. , that is 90°.

[0038] In summary, the aperture 500 formed by time division multiplexing in the present invention can increase the display area for imaging, that is, the image element 600 area, thereby effectively increasing the viewing angle. Compared with the viewing angle in the traditional mode, The large viewing angle composite imaging display device can increase the viewing angle to However, due to the frequency division effect of time division multiplexing, the frame rate of the image will also drop to 1 / 1 of the original image refresh rate. n .

Claims

1. A large-viewing-angle composite imaging display device, characterized in that: The large viewing angle composite imaging display device comprises a first 2D display panel, a first lens array, a second 2D display panel, and a second lens array; wherein the second 2D display panel is a transparent liquid crystal display panel; The first 2D display panel, the first lens array, the second 2D display panel, and the second lens array are placed in sequence from back to front; The focal length of the second lens array is f 2. The pitch of the second lens array is p ; The distance from the second 2D display panel to the second lens array is equal to the focal length of the second lens array f 2; The first 2D display panel and the first lens array form a first three-dimensional display structure; The second 2D display panel and the second lens array form a second three-dimensional display structure; The first three-dimensional display structure displays an aperture array at the position of the second lens array, and the periodic pitch of the aperture array is np , n is a positive integer greater than or equal to 2, and the aperture array has an opening of p Light-transmitting gaps; The first 3D display structure changes the position of the aperture array in a time-division multiplexing manner so that the light-transmitting slits of the aperture array alternately overlap with each lens of the second lens array; simultaneously, the second 2D display panel synchronously provides an image element array that matches the lenses that overlap with the light-transmitting slits; Assume that the viewing angle of the large viewing angle composite imaging display device is θ , then .

2. The large-viewing-angle composite imaging display device according to claim 1, wherein: The first lens array is placed in close contact with the second 2D display panel.

3. The large-viewing-angle composite imaging display device according to claim 1, wherein: The focal length of the first lens array is f 1. The distance from the first 2D display panel to the first lens array is l 1; the distance from the first lens array to the second lens array is l 2, and there is .

4. The large-viewing-angle composite imaging display device according to claim 3, wherein: Replace the distance from the first 2D display panel to the first lens array l 1. By Replace with l 1= f 1.

5. The large-viewing-angle composite imaging display device according to claim 1, wherein: The first lens array is replaced by a cylindrical lens grating.

6. The large-viewing-angle composite imaging display device according to claim 1, wherein: The second lens array is replaced by a cylindrical lens grating.

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