US4559534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display device with legends formed integrally with electrode structure
Assignee: Mannesmann VDO AG
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Filing: 1982-09-27
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Granted: 1985-12-17
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Expires: 2002-09-27
Abstract
Abstract A display device having a cell containing a liquid-crystal substance arranged between two opposing electrodes (3, 4, 5, 6). One of the opposing electrodes is subdivided into a plurality of selectively activatable adjacent display electrodes (4, 5, 6) forming bar graphs (9, 10, 11) while the other electrode is arranged opposite the display electrodes (4, 5, 6) as a common electrode (3). In order to permit simultaneous display of two items of information while maintaining a simple construction, one of the electrodes (3, 4, 5, 6) has recesses (8) which form a display pattern.
Inventors
- 👤 Friedrich-Wilhelm Nickol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:35
CPC Classifications
G; G01; G01D; G01D7/00; B; B60; B60K; B60K35/00; B60K35/20; B60K35/21; B60K35/22; B60K35/28; B60K35/60; G01P; G01P1/00; G01P1/07; G01P1/08; G01R; G01R13/00; G01R13/40; G01R13/401; G01R13/403; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
147 words
In a display device, a cell comprising: an electrode assembly consisting of only two opposed electrode structures, a liquid-crystal substance arranged between said two opposed electrode structures, a first of said electrode structures being divided into a plurality of selectively activatable adjacent display electrodes arranged to form bar graphs while the other of said electrode structures is formed as a common electrode, and is positioned opposite said display electrodes as a common electrode, and wherein one of said opposed electrodes structures has recesses which form a fixed display pattern, each of said recesses being formed directly within an electrode of one of said electrode structures, individual ones of said recesses being in registration with corresponding ones of said display electrodes such that a symbol provided by a recess appears to an observer to be within a corresponding display electrode image upon activation of the corresponding display electrode.
Claim 2
Dependent Claim
147 words
In a display device, a cell comprising: an electrode assembly consisting of only two opposed electrode structures, a liquid-crystal substance arranged between said two opposed electrode structures, a first of said electrode structures being divided into a plurality of selectively activatable adjacent display electrodes arranged to form bar graphs while the other of said electrode structures is formed as a common electrode, and is positioned opposite said display electrodes as a common electrode, and wherein one of said opposed electrodes structures has recesses which form a fixed display pattern, each of said recesses being formed directly within an electrode of one of said electrode structures, individual ones of said recesses being in registration with corresponding ones of said display electrodes such that a symbol provided by a recess appears to an observer to be within a corresponding display electrode image upon activation of the corresponding display electrode.
Claim 3
Dependent Claim
17 words
The display device according to claim 1, wherein the display pattern is fixed and includes alpha-numeric characters.
Claim 4
Dependent Claim
21 words
The display device according to claim 1, wherein said common electrode is positioned further from an observer than said display electrodes.
Claim 5
Dependent Claim
23 words
The display device according to claim 1, 2, or 3, wherein said display pattern is associated with a group of said display electrodes.
Claim 6
Dependent Claim
22 words
The display device according to claim 1, 2, or 3, wherein a plurality of said display electrodes provide a common display pattern.
Claim 7
Dependent Claim
32 words
The display device according to claim 1, 2, or 3, wherein said common electrode is positioned opposite a plurality of groups of said display electrodes for the formation of said bar graphs.
Claim 8
Dependent Claim
25 words
The display device according to claim 1, 2, or 3, wherein said display is adapted for inclusion in the instrument panel of an automotive vehicle.
Claim 9
Dependent Claim
106 words
A liquid crystal display comprising: a common electrode, a plurality of sets of bar-shaped electrodes positioned in front of said common electrode, and liquid crystal material provided between said bar-shaped electrodes and said common electrode, individual ones of said sets being spaced apart to permit simultaneous presentation of separate bar graph displays, and wherein individual ones of said bar-shaped electrodes are provided with recesses in the form of symbols for a simultaneous presentation of a character display with a bar graph display, a symbol provided by a recess appearing to an observer to be within a bar-shaped electrode image upon activation of the corresponding bar-shaped electrode.
Claim 10
Dependent Claim
106 words
A liquid crystal display comprising: a common electrode, a plurality of sets of bar-shaped electrodes positioned in front of said common electrode, and liquid crystal material provided between said bar-shaped electrodes and said common electrode, individual ones of said sets being spaced apart to permit simultaneous presentation of separate bar graph displays, and wherein individual ones of said bar-shaped electrodes are provided with recesses in the form of symbols for a simultaneous presentation of a character display with a bar graph display, a symbol provided by a recess appearing to an observer to be within a bar-shaped electrode image upon activation of the corresponding bar-shaped electrode.
Claim 11
Dependent Claim
16 words
The display device according to claim 1, wherein said recesses are formed within said common electrode.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |