Liquid crystal display device with particular angle between optical axis of ...

[54] LIQUID CRYSTAL DISPLAY DEVICE WITH PARTICULAR ANGLE BETWEEN OPTICAL AXIS OF OPTICALLY ANISOTROPIC MATERIAL AND OBSERVATION DIRECTION

[75] Inventor: Hiroshi Wada, Suwa, Japan

[73] Assignee: Seiko Epson Corporation, Tokyo, Japan

[21] Appl. No.: 683,419

[22] Filed: Apr. 9,1991

[30] Foreign Application Priority Data

Apr. 9, 1990 [JP] Japan 2-93667

[51] Int. CI.* G02F 1/13; G02F 1/1335

[52] U.S. Q 359/63; 359/73;

359/102

[58] Field of Search 350/347 R, 337; 359/63,

359/73, 102

[56] References Cited

U.S. PATENT DOCUMENTS

4,844,569 7/1989 Wada et al 350/347 R

4,852,976 8/1989 Suzuki 350/337

4,889,412 12/1989 Clerc et al 359/73

4,909,606 3/1990 Wada et al 350/347 R

4,957,349 9/1990 Clerc et al 359/73

5,016,988 5/1991 Iimura 350/337