Phase difference layer laminated body for three dimensional liquid crystal display device and manufacturing method thereof

Abstract

A phase difference layer laminated body used in a three-dimensional liquid crystal display device, wherein unit cells are divided into groups for left and right eyes, which are given different degrees of polarization, thereby creating a three-dimensional image, further wherein the phase difference layer laminated body has a base material having orientability, and a phase difference layer made of a liquid crystal material that can form a nematic phase and formed in a pattern with two different portions, and the liquid crystal material in each of two different portions is oriented to have different refractive index anisotropy each other that conforms to the two different degrees of polarization and fixed as it is.

Description

[0001]This application is a Continuation-in-Part of Ser. No. 12 / 073,636, filed Mar. 7, 2008, which in turn is a Continuation of Ser. No. 11 / 602,382, filed Nov. 21, 2006, which in turn is a Continuation of Ser. No. 10 / 473,215, filed Oct. 30, 2003, which in turn is a National Phase of International Patent Application No. PCT / JP02 / 11601, filed Nov. 7, 2002, which claims priority of Japanese Patent Application Nos. 2001-343873, filed Nov. 8, 2001 and 2002-259150, filed Sep. 4, 2002. The disclosures of these applications are incorporated herein by reference in their entirety.TECHNICAL FIELD[0002]The present invention relates to a phase difference layer laminated body for a three dimensional liquid crystal display device which offers high orientation freedom and allows easy patterning, a manufacturing method thereof, a manufacturing method of an optical oriented film used for a phase difference layer laminated body, a liquid crystal cell including a phase difference layer laminated body a...

AI Technical Summary

Benefits of technology

[0008]The present invention has been devised in view of the above problems, and a main object thereof is to provide a phase difference layer laminated body which has very high freedom of molecular orientation in its phase difference layer and which can be manufactured with ease, a manufacturing method thereof, and a liquid crystal display device.

[0009]To achieve the above object, the present invention provides (1), a phase difference layer laminated body used in a three-dimensional liquid crystal display device, wherein unit cells are divided into groups for left and right eyes, which are given different degrees of polarization, thereby creating a three-dimensional image, further wherein the phase difference layer laminated body has a base material having orientability, and a phase difference layer made of a liquid crystal material that can form a nematic phase and formed in a pattern with two different portions, and the liquid crystal material in each of two different portions is oriented to have different refractive index anisotropy each other that conforms to the two different degrees of polarization and fixed as it is. According to the invention, since a liquid crystal material that can form a nematic phase is used for the phase difference layer, by suitably selecting the type of liquid crystal material and the base material having orientability, it is possible to determine orientation directions with ease, and therefore the phase difference layer laminated body thus obtained can be applied to a three dimensional liquid crystal device.

Problems solved by technology

However, this method only allows fabrication of phase difference films in which the main chains of polymer are oriented in the directions of stretch, and therefore the problem was that the orientation of resultant phase difference films was limited only to directions parallel to the surface of the phase difference film.

Meanwhile, phase difference films having vertical polymer orientation relative to the surface, or various other orientation directions, are now in demand; the problem with the above method for obtaining phase difference films by stretching polymer films is that it cannot meet such demand because of its little freedom in setting orientation direction.

In a multi-domain type liquid crystal display element, for example, in which each unit cell is divided into a plurality of regions with different directions of liquid crystal directors, optical compensation with the conventional phase difference film was, while favorable in some regions, not necessarily satisfactory in other regions.

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