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Three-dimensional image display device

An image display and display device technology, applied in image communication, instruments, optics, etc., can solve the problems of display obstacles, low definition, and cannot be said to have been fully improved, and achieve the effect of preventing display obstacles and improving the balance of clarity

Inactive Publication Date: 2008-01-02
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, the balance cannot be said to have improved sufficiently for the following reasons
There is a problem that in the case of displaying a three-dimensional image by allocating an area where a plurality of parallax images can be observed, such as the IP method or the multi-eye method, due to its structure, the resolution of the three-dimensional image display device is lower than that of the used Two-dimensional image display devices originally have low resolution and display failure due to non-display parts

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0137] In Example 1, the multi-eye type three-dimensional image display device shown in FIG. 19 was fabricated. The two-dimensional image display device 14 is a liquid crystal display device, the light control unit 6 is provided on the front surface, and the backlight 16 is provided on the rear surface.

[0138] Specifically, in Example 1, a QUXGA-LCD panel (number of pixels 3200×2400, screen size 480 mm×360 mm) was used as a liquid crystal display device. In this liquid crystal display device 14, three sub-pixels of red, green, and blue can be independently driven. In addition, each sub-pixel of red, green, and blue has a horizontal length of 50 μm and a vertical length of 150 μm. In addition, a stripe arrangement is used for the color filter arrangement. It should be pointed out that in a common two-dimensional image display device, three sub-pixels such as red, green, and blue arranged horizontally form a pixel (a group of three), but in this example, the restriction . ...

Embodiment 2

[0143] In Example 2, an IP-type three-dimensional image display device having the structure shown in FIG. 19 was manufactured. The exit pupil interval of the light control unit is designed to be an integer multiple of the sub-pixel interval of the image display device. Unlike the multi-eye type, there is no condensed point at the viewing distance. Differences from Embodiment 1 will be described below.

[0144] The horizontal pitch of lenses is designed to be 600 μm, which is four times the width of the sub-pixel, and the viewing distance is ±15 degrees. Accordingly, it is possible to secure a field of view equivalent to the width of the screen at a viewing distance of 1.0 m (an area where false images are not mixed and can be observed). The tilt angle of the lens is 14.0 degrees. In the viewing distance, set the gaze point in the center of the screen, (in CG, virtual) use the camera to pass through the parallel lens in the horizontal direction, and obtain 28 parallax images ...

Embodiment 3

[0148] In the third embodiment, it is almost the same as the second embodiment, but adopts a design in which the number of reference parallaxes is increased to 25. The light control unit uses a lenticular lens designed so that the pixel position of the liquid crystal panel becomes the focal length. The horizontal spacing of the lenses is 750 μm, which is 15 times the sub-pixel width, and the inclination angle is 11.3 degrees.

[0149] In the viewing distance, 44 parallax images are obtained by parallel projection both vertically and horizontally with a camera whose center of the screen is set as the gaze point (virtual in CG). The resolution of the parallax image is 640(×RGB)×480. Basically, the 640×RGB×480×25 parallax image is mapped according to the mapping in FIG. 8 . As shown in FIG. 12, the pixel width of the three-dimensional image display is shifted to the left every five rows of three-dimensional image display pixels, and the column information is maintained. In add...

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Abstract

It is possible to provide a three-dimensional image display device which can improved a final resolution balance and can prevent display blocking. A three-dimensional image display device includes: a two-dimensional image display device where pixels (4) constituting a pixel group displaying an elemental image are arranged in a matrix shape; and an optical plate (6) which has exit pupils (7) corresponding to the pixel group and controls light rays from the pixels of the pixel group, wherein the exit pupils in the optical plate are constituted so as to be continued in an approximately vertical direction, and an angle ([theta]) formed between a direction in which the exist pupils are continued (L) and a column direction (Y) of a pixel arrangement in the two-dimensional image display device is given by arctan (1 / n) when n is a natural number which is different from multiples of 3.

Description

[0001] This divisional application is a divisional application based on the applicant's application number 200510007647.8, the application date is February 7, 2005, and the invention title is "3D image display device". technical field [0002] The invention relates to a three-dimensional image display device capable of displaying three-dimensional images. Background technique [0003] Three-dimensional image display technology can be classified into various categories, but when displaying a three-dimensional image without glasses, such as the multi-eye method, hologram and integral photography method (hereinafter referred to as IP method), the following structure may be used, for example . That is, a plurality of pixels for two-dimensional image display arranged two-dimensionally constitutes a pixel for three-dimensional image display, and a light control unit is arranged on the front side thereof. It should be pointed out that in the light control section, each pixel for d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/22H04N13/00
Inventor 福岛理惠子最首达夫平和树平山雄三
Owner KK TOSHIBA
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