Liquid crystal lens electrically driven and stereoscopic display device using the same

Abstract

A liquid crystal lens electrically driven and stereoscopy display device using the same are disclosed, by which a thickness of a liquid crystal layer provided to the liquid crystal lens electrically driven is reduced in a manner of applying fresnel lens within a pitch anisotropically.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2009-0102379 filed on October 27, 2009, which is hereby incorporated by reference as if fully set forth herein. technical field [0002] The invention relates to a display device, in particular to an electrically driven liquid crystal lens and a three-dimensional display device using the same. Although the present invention is suitable for a wide range of applications, it is particularly suitable for reducing the thickness of a liquid crystal layer provided to an electrically driven liquid crystal lens by applying Fresnel lenses anisotropically within a pitch. Background technique [0003] Generally speaking, various services for high-speed information transmission to be established based on a very high speed information communication network have developed from "speaking and listening" services such as telephone services to services that can process text at a high speed. , voice and video digital...

AI Technical Summary

Problems solved by technology

Especially, in the electrically driven liquid crystal lens formed by the electric field of the liquid crystal, if the pitch of the lens area is further increased, the electrodes to which the high voltage is applied are restricted, and a gap occurs between the electrodes to which the high voltage is applied in the lens area and the opposite substrate. If the electric field is insufficient, it is more difficult to form an electrically driven liquid crystal lens with a flat parabola that can provide the same effect as the lens

[0023] Second, in a large-sized display device, since the central area of ​​the lens away from the edge area of ​​the lens area where electrodes are disposed has almost no electric field effect, it is difficult to adjust the liquid crystal arrangement (arrangement) by the electric field in this area.

In order to manufacture an electrically driven liquid crystal lens with a short focal length, the liquid crystal layer needs to have a considerable height, leading to an increase in cost

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