Sony Corporation

Tokuhiro Morioka

Shoji Akiyama

Yoshinori Itaba

Kokichi Kohinata

Akihiro Horii

Shunichi Kajiya

Hiroshi Mizuno

Yutaka Muramoto

Noriyuki Hirai

Hideki Terashima

Satoshi Sekino

Tatsuya Harima

Akiko Kakibe

Sachie Shoji

Noriaki Doi

An optical sheet includes a sheet body including a single translucent resin material layer having a first surface that light enters and a second surface that the light exits. The sheet body is orientationally crystallized in a first in-plane axis direction and a second in-plane axis direction orthogonal to each other and having a linear expansion coefficient of 1.0*10E&#x2212;5/&#xb0; C. or less in all in-plane directions. A structure surface portion that has a geometric configuration and is formed on at least one of the first surface and the second surface.

Optical sheet, optical sheet production method, surface-emitting apparatus, and liquid crystal display apparatus

A retardation compensatorfor compensating for residual retardation of a liquid crystal panelincludes a retardation compensating platehaving birefringence. An in-plane retardation Rof the retardation compensating plateand an in-plane retardation Rof the liquid crystal panelsatisfy a relationship of 1&#x3c;R/R&#x2266;10, thereby allowing changes in the amount of compensated retardation among rotation angles occurring when the retardation compensating plateis set with respect to the liquid crystal panelto be confined within narrow limits. Therefore, the contrast can be adjusted readily, and variations in residual retardation among the individual liquid crystal panelscan be accommodated flexibly.

Retardation compensating plate to compensate residual retardation of a liquid crystal panel, a compensator, a liquid crystal display device, and a projection image display apparatus having the same

Production method of and production apparatus for optical recording disc

Growing community of inventors

Miyagi, Japan

Tokuhiro Morioka