Title:
HIGH CONTRAST LIQUID CRYSTAL DISPLAY
Document Type and Number:
Japanese Patent JPS59195227
Kind Code:
A
Abstract:
A liquid crystal display device having high extinction ratio polarizers on the input and output sides of a transmissive, twisted nematic liquid crystal cell. The liquid crystal cell incorporating a dichroic dye which is admixed with the liquid crystal material. The high extinction ratio polarizers get the full contrast and density capability from the liquid crystal cell while the dichroic dye prevents the buildup of the contrast limiting orthogonal mode of the polarized light passing therethrough, thus, further increasing the optical contrast and density. Such an arrangement provides optical contrasts of around 150:1 with a 10 micron thick liquid crystal cell.
Inventors:
GEARII EI DEIAA
Application Number:
JP5521084A
Publication Date:
November 06, 1984
Filing Date:
March 22, 1984
Export Citation:
Assignee:
XEROX CORP
International Classes:
G02F1/1335; G02F1/137; G02F1/139; (IPC1-7): G02F1/133; G02F1/137
Domestic Patent References:
| JPS56109316A | 1981-08-29 | |||
| JPS5846327A | 1983-03-17 |
Attorney, Agent or Firm:
Minoru Nakamura
Previous Patent: JPS59195226
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