Sony Corporation

Sachie Shoji

Yutaka Muramoto

Hideki Terashima

Satoshi Sekino

Tokuhiro Morioka

Tatsuya Harima

Noriaki Doi

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

There is provided a magnetic recording medium having an extremely thin magnetic layer, in which, not only corrosion of the magnetic layer is suppressed, but also the storage properties and the electromagnetic conversion properties are improved. The magnetic recording medium comprises: an elongated nonmagnetic substrate; a first shielding layer comprised of a metal or an alloy; a second shielding layer comprised of a material which is more hardly oxidized than the first shielding layer, and a magnetic layer, formed by a vacuum thin film formation technique, having a thickness of 55 nm or less. A total thickness of the first shielding layer and the second shielding layer is 2 to 50 nm.

Magnetic recording medium

Growing community of inventors

Miyagi, Japan

Sachie Shoji