US4656466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optic display device
Assignee: Canon Inc
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Filing: 1985-09-17
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Granted: 1987-04-07
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Expires: 2005-09-17
Abstract
Abstract A display device in which display contents to be displayed by a display element such as a liquid crystal, as well as display portions and display forms can be recognized and display patterns can be easily recognized in cases where complicated photographing information is displayed.
Inventors
- 👤 Masaaki Yoshida
- 👤 Ryoichi Yoshikawa
- 👤 Naoki Nagase
- 👤 Masanori Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:19
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133512; G02F1/133374
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
118 words
An electro-optic display device comprising: a front transparent substrate; a rear substrate, and an electro-optical material disposed between said front and rear substrates; first and second electrical conductors disposed respectively on the inside surfaces of said front and rear substrates, said first conductor being transparent; first means for selectively providing an optional image, said optional image defining a certain zone and being formed by at least one of the conductors; and second means forming a non-transparent pattern comprising a permanent image similar to the optional image selectively provided by the first means, said pattern being formed in an optical path from front to rear substrates inside the zone of the optional image selectively provided by said first means.
Claim 2
Dependent Claim
118 words
An electro-optic display device comprising: a front transparent substrate; a rear substrate, and an electro-optical material disposed between said front and rear substrates; first and second electrical conductors disposed respectively on the inside surfaces of said front and rear substrates, said first conductor being transparent; first means for selectively providing an optional image, said optional image defining a certain zone and being formed by at least one of the conductors; and second means forming a non-transparent pattern comprising a permanent image similar to the optional image selectively provided by the first means, said pattern being formed in an optical path from front to rear substrates inside the zone of the optional image selectively provided by said first means.
Claim 3
Dependent Claim
17 words
A device according to claim 1, wherein said second means is printed on said front transparent substrate.
Claim 4
Dependent Claim
14 words
A device according to claim 1 wherein said electro-optical material is a liquid crystal.
Claim 5
Dependent Claim
42 words
A device according to claim 1, further comprising: a polarizer and a relector both being disposed in turn, in the rear of said rear substrate, wherein said second means is disposed in an optical path from said electro-optical material to said reflector.
Claim 6
Dependent Claim
123 words
An electro-optic display device comprising: a front transparent substrate; a rear substrate, and an electro-optical material disposed between said front and rear substrates; first and second electrical conductors disposed respectively on the inside surfaces of said front and rear substrates, said first conductor being transparent; first means for selectively providing an optional image for display, said optional image being formed by at least one of the conductors; and second means forming a non-transparent pattern comprising a permanent image similar to the optional image to be displayed by the first means, said pattern being formed at a position in an optical path from front to rear substrates on a surface of the substrate opposite to the surface on which said optional image is formed.
Claim 7
Dependent Claim
123 words
An electro-optic display device comprising: a front transparent substrate; a rear substrate, and an electro-optical material disposed between said front and rear substrates; first and second electrical conductors disposed respectively on the inside surfaces of said front and rear substrates, said first conductor being transparent; first means for selectively providing an optional image for display, said optional image being formed by at least one of the conductors; and second means forming a non-transparent pattern comprising a permanent image similar to the optional image to be displayed by the first means, said pattern being formed at a position in an optical path from front to rear substrates on a surface of the substrate opposite to the surface on which said optional image is formed.
Claim 8
Dependent Claim
17 words
A device according to claim 5, wherein said second means is printed on said front transparent substrate.
Claim 9
Dependent Claim
14 words
A device according to claim 5, wherein said electro-optical material is a liquid crystal.
Claim 10
Dependent Claim
78 words
An electro-optic display deivice for a photographic information, comprising: first means for selectively providing an optional image for display of photographic information, said optional image defining a certain zone and being formed by conductors; and second means forming a non-transparent pattern comprising a permanent image similar to the optional image for display of photographic information, said pattern being formed at a position in an optical path inside said zone of the optional image for display of photographic information.
Claim 11
Dependent Claim
78 words
An electro-optic display deivice for a photographic information, comprising: first means for selectively providing an optional image for display of photographic information, said optional image defining a certain zone and being formed by conductors; and second means forming a non-transparent pattern comprising a permanent image similar to the optional image for display of photographic information, said pattern being formed at a position in an optical path inside said zone of the optional image for display of photographic information.
Claim 12
Dependent Claim
12 words
A device according to claim 8, wherein said photographic information is numerical.
Claim 13
Dependent Claim
14 words
A device according to claim 8, wherein said photographic information is a design figure.
Claim 14
Dependent Claim
98 words
An electro-optic display device for a photographic information, comprising: first means for selectively providing an optional image for display of photographic information, said optional image defining a certain zone and being formed by conductors, the conductors being arranged on one surface of at least two opposing substrates; and second means forming a non-transparent pattern comprising a permanent image similar to the optional image to be displayed by the first means said non-transparent pattern being formed on an opposite surface of at least one of the substrates and within an optical path inside the zone of said optional image.
Claim 15
Dependent Claim
98 words
An electro-optic display device for a photographic information, comprising: first means for selectively providing an optional image for display of photographic information, said optional image defining a certain zone and being formed by conductors, the conductors being arranged on one surface of at least two opposing substrates; and second means forming a non-transparent pattern comprising a permanent image similar to the optional image to be displayed by the first means said non-transparent pattern being formed on an opposite surface of at least one of the substrates and within an optical path inside the zone of said optional image.
Claim 16
Dependent Claim
12 words
A device according to claim 11, wherein said photographic information is numerical.
Claim 17
Dependent Claim
14 words
A device according to claim 11, wherein said photographic information is a design figure.
Claim 18
Dependent Claim
81 words
An electro-optic display device for a photographic information, comprising: first means for selectively providing an optional figured image for display of photographic information, said image having a certain zone and being formed by conductors; and second means forming a non-transparent pattern comprising a permanent image different from the optional image selectively provided by the conductors of said first means and formed at a position in an optical path within the zone of the optional image selectively provided by said first means.
Claim 19
Dependent Claim
81 words
An electro-optic display device for a photographic information, comprising: first means for selectively providing an optional figured image for display of photographic information, said image having a certain zone and being formed by conductors; and second means forming a non-transparent pattern comprising a permanent image different from the optional image selectively provided by the conductors of said first means and formed at a position in an optical path within the zone of the optional image selectively provided by said first means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |