Stereoscopic picture display device

Abstract

A three-dimensional image display apparatus includes an image display configured to output image light which arrays a plurality of pixels and has polarization, a lens array arranged in front of the image display, configured to function as lens at light which has a 1st polarization direction, and not to function as lens at light which has a 2nd polarization direction differed from the 1st polarization direction, and a birefringent phase modulator placed between the image display and the lens array and configured to rotate a polarization plane of the image light.

Description

[0001] This application is a divisional application of the invention whose application number is "200410033066.7", the filing date is February 6, 2004, and the invention title is "Stereoscopic Image Display Device". technical field [0002] The present invention relates to a stereoscopic image display device. Background technique [0003] As a stereoscopic image display method using a two-dimensional flat display device, patent applications have proposed a method of synthesizing and displaying images with multiple viewing directions on the image display surface, and selecting a visually corresponding image according to the observer's viewpoint position. [0004] As a display method of a stereoscopic image, there is a binocular type that displays two images of an image by observing two images at the viewpoint positions of the left and right eyes, and similarly, a multi-eye type that forms a plurality of images with respect to a plurality of viewpoint positions, and there is al...

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Problems solved by technology

[0014] On the other hand, when an LCD (Liquid Crystal Display: liquid crystal display) is used as an image display part, there are restrictions on the polarization direction of the displayed image due to the viewing angle dependence of the LCD.

Therefore, when the polarized light direction of the liquid crystal lens and the polarized light direction of the image display part side are directly corresponded, difficulties arise in the design of the liquid crystal lens. , causing a drop in the display level

[0015] In addition, the refractive index anisotropy of liquid crystal is as high as about 0.2. Therefore, if the orientation control of liquid crystal is used to control whether there is a lens effect, the thickness of the liquid crystal layer must be increased. As a result, only a fraction of a second of delayed response time can be achieved.

[0016] Therefore, there is a possibility that an image not desired to be displayed may be displayed during the transient response period when switching between a two-dimensional image and a stereoscopic image.

[0017] Moreover, when the liquid crystal lens is divided into multiple regions and mixed to display two-dimensional images and three-dimensional images, the voltage-orientation characteristics of the liquid crystal lens are slow, so it is difficult to drive the passive matrix type components through row selection, and it is necessary to Choose segmented drive only for limited area, or implement costly active matrix drive

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