Title:
【発明の名称】投写装置
Document Type and Number:
Japanese Patent JP2000517071
Kind Code:
A
Abstract:
Projection device based on a reflective LCD display, in which the use of a retardation foil leads to a greater brightness and more contrast, both in a "normally black" and a "normally white" display device. A preferred range for the retardation value of the foil is stated, together with a preferred range for the twist angle of the LCD.
Inventors:
Knossen Herald
Stallinga Schuurt
Melnik George A
Stallinga Schuurt
Melnik George A
Application Number:
JP50402399A
Publication Date:
December 19, 2000
Filing Date:
May 29, 1998
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
G02F1/13; G02B27/02; G02B27/28; G02F1/1335; G02F1/139; H04N5/74; G02F1/13363; (IPC1-7): G02F1/1335; G02B27/02; G02F1/13
Attorney, Agent or Firm:
Akihide Sugimura (5 outside)