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US 7,411,645 B2Granted
Phase difference layer laminated body and manufacturing method thereof
AssigneeDai Nippon Printing Co., Ltd.
InventorKeiji Kashima
Life of this patent
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Abstract
A main object of the invention is to provide a phase difference layer laminated body which has a very high freedom in orienting molecules of its phase difference layer, and which is manufactured with ease. To achieve the above object, the invention provides a phase difference layer laminated body including 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 on the base material such as to have refractive index anisotropy.
Claims15
A liquid crystal display device, comprising:
- a liquid crystal display element including a liquid crystal layer and comprising a plurality of unit cells that constitute a multiplicity of pixels, each of the unit cells having at least one oriented film with a rib having one of a semispherical shape, a triangular prism shape and a polygonal pyramid shape protruded at the center thereof, liquid crystal molecules on a surface of said liquid crystal layer being oriented by the rib at angles radiating therefrom;
- and
- a phase difference optical element arranged at least on one side in a thickness direction of said liquid crystal display element, the phase difference optical element being divided into a plurality of oriented compensation regions, wherein
- the phase difference optical element includes a base material having orientability and a phase difference layer made of a liquid crystal material that can form a nematic phase, and the phase difference layer is formed in a pattern on the base material so as to form at least two different oriented compensation regions, and
- the liquid crystal material has different directions of refractive index anisotropy in the at least two different oriented compensation regions in the same phase difference layer and fixed in that state.
2 more elements
A liquid crystal display device, comprising:
- a liquid crystal display element including a liquid crystal layer and comprising a plurality of unit cells that constitute a multiplicity of pixels, each of the unit cells having at least one oriented film with a rib having one of a semispherical shape, a triangular prism shape and a polygonal pyramid shape protruded at the center thereof, liquid crystal molecules on a surface of said liquid crystal layer being oriented by the rib at angles radiating therefrom;
- and
- a phase difference optical element arranged at least on one side in a thickness direction of said liquid crystal display element, the phase difference optical element being divided into a plurality of oriented compensation regions wherein
- the phase difference optical element includes a base material having orientability and a phase difference layer made of a liquid crystal material that can form a nematic phase, the phase difference layer is formed in a pattern on the base material such as to form at least two different oriented compensation regions, the liquid crystal material has different directions of refractive index anisotropy in the at least two different oriented compensation regions in the same phase difference layer and fixed in that state, and said each unit cell of said liquid crystal display element is divided into a plurality of oriented display regions, the liquid crystal molecules on the surface of said liquid crystal layer being oriented in different directions of directors for each of said oriented display regions, and wherein said oriented compensation regions are formed in said phase difference optical element corresponding to said oriented display regions.
1 more element
Dependencies are inferred from the claim text.