EP0127374A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Colour liquid crystal display device
Assignee: Seiko Instruments Inc
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Filing: 1984-05-15
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Granted: —
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Expires: 2004-05-15
Abstract
Abstract A colour liquid crystal display device comprises a first display cell (A) which has an optical shutter effect disposed on a second twisted nematic liquid crystal display cell (B) which has a double layered multi-colour polarizing plate (8) in which the absorption axes of respective layers having different absorption wavelength regions are perpendicular to each other, picture elements of the first display cell (A) and the second display cell (B) being arranged so as to correspond to each other.
Inventors
- 👤 Hitoshi Kamamori
- 👤 Yukiyoshi Tsunoda
- 👤 Mitsuru Suginoya
- 👤 Yutaka Sano
- 👤 Yumiko Terada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 21:01
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133528; G02F1/133533; G02F1/1347; G02F1/13471; G02F1/03; G02F1/055; G02F1/137; G02F1/13725; G02F1/139; G02F1/1396; G02F2203/00; G02F2203/34
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
1 . A colour liquid crystal display device characterised by comprising: a first display cell (A) which has an optical shutter effect disposed on a second twisted nematic liquid crystal display cell ( B ) which has a double layered multi-colour polarizing plate (8) in which the absorption axes of respective layers having different absorption wavelength regions are perpendicular to each other, picture elements of said first display cell (A) and said second display cell (B) being arranged so as to correspond to each other.
Claim 2
Dependent Claim
85 words
1 . A colour liquid crystal display device characterised by comprising: a first display cell (A) which has an optical shutter effect disposed on a second twisted nematic liquid crystal display cell ( B ) which has a double layered multi-colour polarizing plate (8) in which the absorption axes of respective layers having different absorption wavelength regions are perpendicular to each other, picture elements of said first display cell (A) and said second display cell (B) being arranged so as to correspond to each other.
Claim 3
Dependent Claim
36 words
A colour liquid crystal display device as claimed in claim 1 characterised in that said first display cell (A) is a twisted nematic type liquid crystal display cell sandwiched between a pair of polarizing plates (1,2).
Claim 4
Dependent Claim
31 words
A colour liquid crystal display device as claimed in claim 1 characterised in that said first display cell (A) is a guest-host liquid crystal display cell containing black dichroic colouring matter.
Claim 5
Dependent Claim
23 words
A colour liquid crystal display device as claimed in claim 1 characterised in that said first display cell (A) utilises an electrochromic phenomenon.
References Cited (Backward Citations)
No citation records indexed.
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