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AssigneeSony Corporation
InventorsYutaka Muramoto, Satoshi Sekino, Hideki Terashima, Tatsuya Harima, Sachie Shoji, Noriaki Doi, Tokuhiro Morioka
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A retardation compensator 40 for compensating for residual retardation of a liquid crystal panel 11 includes a retardation compensating plate 50 having birefringence. An in-plane retardation R0c of the retardation compensating plate 50 and an in-plane retardation R0p of the liquid crystal panel 11 satisfy a relationship of 1<R0c/R0p≦10, thereby allowing changes in the amount of compensated retardation among rotation angles occurring when the retardation compensating plate 50 is set with respect to the liquid crystal panel 11 to be confined within narrow limits. Therefore, the contrast can be adjusted readily, and variations in residual retardation among the individual liquid crystal panels 11 can be accommodated flexibly.
A retardation compensating plate for compensating for residual retardation of a liquid crystal panel, the retardation plate having birefringence, wherein an in-plane retardation (R0c) of the retardation compensating plate and an in-plane retardation (R0p) of the liquid crystal panel satisfy a relationship of 1<R0c/R0p≦10.
A retardation compensator for compensating for residual retardation of a liquid crystal panel, the retardation plate comprising a retardation compensating plate having birefringence, wherein an in-plane retardation (R0c) of the retardation compensating plate and an in-plane retardation (R0p) of the liquid crystal panel satisfy a relationship of 1<R0c/R0p≦10.
A retardation compensator comprising rotating means for rotating the retardation compensating plate about an axis perpendicular to the retardation compensating plate, the axis acting as a rotation axis.
A liquid crystal display device comprising a liquid crystal panel and a retardation compensator, the liquid crystal panel controlling transmitted light, the retardation compensator being disposed on the liquid crystal panel and including a retardation compensating plate having birefringence,
A projection image display apparatus comprising:
Dependencies are inferred from the claim text.