EP0089378A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Colored liquid crystal display unit
Assignee: Mitsubishi Electric Corp
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Filing: 1982-09-29
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Granted: —
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Expires: 2002-09-29
Abstract
Abstract This colored liquid crystal display unit has liquid crystal cells (102), (103), (104), each displaying a different color such as the three primary colors, arranged on a transparent substrate (4) to form a single liquid crystal panel (10), a number of the panels (10) are laterally and longitudinally connected together to form a large screen display structure, the lights transmitted from the back surface are controlled by voltages applied to the electrodes of the cells (102), (103), (104), thereby mixing the three primary colors of light and enabling a large screen display in full color.
Inventors
- 👤 Makoto Mitsubishi Denki K.K. Oota
- 👤 Masamichi Mitsubishi Denki K.K. Nekozuka
- 👤 Kikuji Mitsubishi Denki K.K. Yagishita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 14:54
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/35; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1347; G02F1/13475
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
49 words
A color liquid crystal display device, which comprises: a number of liquid crystal panels which are connected to one another to form a large screen, each liquid crystal panel having a plurality of liquid crystal cells arranged on a substrate which are different in display color from one another.
Claim 2
Dependent Claim
49 words
A color liquid crystal display device, which comprises: a number of liquid crystal panels which are connected to one another to form a large screen, each liquid crystal panel having a plurality of liquid crystal cells arranged on a substrate which are different in display color from one another.
Claim 3
Dependent Claim
23 words
A device as claimed in Claim 1 , CHARACTERIZED in that said liquid crystal cells are those for displaying three primary colors, respectively.
Claim 4
Dependent Claim
17 words
A device as claimed in Claim 1 , CHARACTERIZED in that said substrate is made of glass.
Claim 5
Dependent Claim
27 words
A device as claimed in Claim 1 , CHARACTERIZED in that each liquid crystal cell is a twist nematic type liquid crystal cell witn a color filter.
Claim 6
Dependent Claim
83 words
A color liquid crystal display device, which comprises: a number of liquid crystal panels which are connected to one another to form a large screen, each liquid crystal panel having at least two electrodes forming one group which are different in electrode area from each other and are electrically independent, a plurality of color filters arranged in correspondence to said electrodes, a common electrode confronted with said independent electrodes, liquid crystal interposed between said common electrode and said independent electrodes, and polarizing plates.
Claim 7
Dependent Claim
83 words
A color liquid crystal display device, which comprises: a number of liquid crystal panels which are connected to one another to form a large screen, each liquid crystal panel having at least two electrodes forming one group which are different in electrode area from each other and are electrically independent, a plurality of color filters arranged in correspondence to said electrodes, a common electrode confronted with said independent electrodes, liquid crystal interposed between said common electrode and said independent electrodes, and polarizing plates.
Claim 8
Dependent Claim
20 words
A device as claimed in Claim 5 , CHARACTERIZED in that said independent electrodes and said common electrode are transparent.
Claim 9
Dependent Claim
140 words
A color liquid crystal display device, which comprises a number of modules which are connected to one another to form a large screen,. each module having: a housing; a plurality of liquid crystal panels which are arranged on the front surface of said housing, each liquid crystal panel including at least two electrodes forming one group which are different in electrode area from each other and are electrically independent, a plurality of color filters arranged in correspondance to said electrodes, a common electrode confronted with said independent electrodes, liquid crystal interposed between said common electrode and said independent electrodes, and polarizing plates, printed circuit boards including drive circuits for driving said liquid crystal panels, said printed circuit boards being arranged longitudinally of said housing, and a fluorescent lamp arranged inside said housing and in parallel with said liquid crystal panels.
Claim 10
Dependent Claim
140 words
A color liquid crystal display device, which comprises a number of modules which are connected to one another to form a large screen,. each module having: a housing; a plurality of liquid crystal panels which are arranged on the front surface of said housing, each liquid crystal panel including at least two electrodes forming one group which are different in electrode area from each other and are electrically independent, a plurality of color filters arranged in correspondance to said electrodes, a common electrode confronted with said independent electrodes, liquid crystal interposed between said common electrode and said independent electrodes, and polarizing plates, printed circuit boards including drive circuits for driving said liquid crystal panels, said printed circuit boards being arranged longitudinally of said housing, and a fluorescent lamp arranged inside said housing and in parallel with said liquid crystal panels.
Claim 11
Dependent Claim
29 words
A device as claimed in Claim 7 , in which said modules are coupled to one another through guide grooves which are formed on both sides of each housing.
Claim 12
Dependent Claim
25 words
A device as claimed in Claim 7 , CHARACTERIZED in that a diffusing plate is provided between said fluorescent lamp and said liquid crystal panels
Claim 13
Dependent Claim
45 words
A device as claimed in Claim 1 , CHARACTERIZED in that 1 1 < 1 2 /2 where 1 1 is the distance between an edge of each liquid crystal panel and a picture element, and 1 2 is the distance between adjacent picture elements.
Claim 14
Dependent Claim
21 words
A device as claimed in Claim 1 , CHARACTERIZED in that said liquid crystal cells are guest-host type liquid crystal cells.
References Cited (Backward Citations)
No citation records indexed.
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