Abstract:
The present invention is to provide a three-dimensional video recognition system, a video display device, and active shutter glasses (AS) in which, even when the observer's visual point and the inclination of the observer's face are changed, the reduction in the brightness of the screen can be suppressed, and in which a sufficient shutter effect can be obtained. The present invention provides a three-dimensional video recognition system that is featured by including a display device, a front plate, and AS glasses, and is featured in that each of the AS glasses includes a first »/4 plate, a first linear polarizing element, a liquid crystal cell, and a second linear polarizing element in this order from the outer surface side, in that the display device includes a third linear polarizing element on an observation surface side of the display device, in that the front plate has a second »/4 plate, and in that, when an angle formed between a transmission axis of the first linear polarizing element and an in-plane slow axis of the first »/4 plate is defined as Æ1, and when an angle formed between a transmission axis of the third linear polarizing element and an in-plane slow axis of the second »/4 plate is defined as Æ2, expressions of 40° ‰¤ Æ1 ‰¤ 50° and of 40° ‰¤ Æ2 ‰¤ 50°, or expressions of 130° ‰¤ Æ1 ‰¤ 140°and of 130° ‰¤ Æ2 ‰¤ 140° are satisfied, where Æ1 and Æ2 are measured as viewed from the side of the »/4 plate and are measured in the counterclockwise direction taken as the positive direction with reference to the transmission axis of the linear polarizing element.
Abstract:
PROBLEM TO BE SOLVED: To prevent stereoscopic effects from being lost at the time of movement by adjusting the area of stereoscopic vision to an appropriate position as matched to the viewpoint of an observer.SOLUTION: The stereoscopic image display device includes an image display device in which unit pixels comprising pixels for left and right visual fields are arrayed, a liquid crystal lens of refractive index distribution type, and a liquid crystal lens drive circuit. The liquid crystal lens includes two transparent plates, a liquid crystal layer in between, and a polarization element, one of the transparent plates having a plurality of electrode groups comprising a plurality of stripe-patterned transparent electrodes and corresponding to each of the unit pixels formed thereon, and the other of the transparent plates having transparent counter electrodes having a certain potential formed thereon. The liquid crystal lens drive circuit applies a common voltage pattern to each electrode group to actuate the liquid crystal by a potential difference between the transparent electrodes and the transparent counter electrodes, thereby causing it to operate as a plurality of lenses constituting a prescribed refractive index distribution for each electrode, and shifts the voltage pattern according to information on the viewpoint position of an observer, thereby causing the refractive index distribution of each individual lens to be shifted.
Abstract:
PROBLEM TO BE SOLVED: To provide a display device including line light sources, which displays a two-dimensional image and a three-dimensional image without reduction in resolution by using an edge type backlight unit including the line light sources and a lenticular lens array and driving the edge type backlight unit and a time division multiplex display panel, and a method of driving the display device.SOLUTION: The display device includes: a display panel for displaying an image in a plurality of viewing zones; a light guide plate disposed under the display panel; a lens array which is disposed along one side of the light guide plate and includes a plurality of lenticular lenses; a light source part including a plurality of line light sources each of which emits light toward the lens array; position sensing means which recognizes position information about the plurality of viewing zones; and a control unit which controls the display panel, the light source part, and the position sensing means according to the position information about the plurality of viewing zones.
Abstract:
PROBLEM TO BE SOLVED: To provide a display device capable of enhancing image quality.SOLUTION: A display device includes: a light-ray control section including first structures arranged at a first pitch; a liquid crystal display section including second structures arranged at a second pitch; and a backlight. One of the liquid crystal display section and the light-ray control section having a smaller structure arrangement pitch is disposed between the other one and the backlight.