Patent US4826296A successfully refreshed from Google Patents.
US4826296A
Expired / Lapsed
US
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Electronic apparatus with liquid crystal display device having a plate to provide a transparent or a reflective mode
Assignee: Sharp Corp
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Filing: 1987-08-26
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Granted: 1989-05-02
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Expires: 2007-08-26
Abstract
Abstract An electronic apparatus comprising a liquid crystal display device, a cabinet of the electronic apparatus supporting the liquid crystal display device and a plate mounted on the cabinet to selectively change the liquid crystal display device between a transmissive type and a reflective type. This plate is either slidable or pivotable from a position under the liquid crystal display device to a position in which the view through the liquid crystal display device is unobstructed.
Inventors
- 👤 Yutaka Yoshimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:22
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/35; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/1336; G02F1/133626; G02F1/133627
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
183 words
An electronic apparatus having a front side and a back side, said apparatus comprising: a liquid crystal display device mounted between the front and back sides of said apparatus, said liquid crystal display device being visible from areas of said apparatus adjacent both the front and back sides thereof; a movable plate located adjacent the back side of said apparatus, said plate being movable between a first position unobstructing said liquid crystal display device and a second position behind said liquid crystal display device; and means for enabling movement of said plate between said first and second positions, said liquid crystal display device being transmissive when said plate is in the first position such that said area of said apparatus adjacent the front side, said liquid crystal display device and said area of said apparatus adjacent the back side are capable of being seen through, and said liquid crystal display device being reflective when said plate is in the second position such that the view through said liquid crystal display device and the area of said apparatus adjacent the back side is blocked.
Claim 2
Dependent Claim
183 words
An electronic apparatus having a front side and a back side, said apparatus comprising: a liquid crystal display device mounted between the front and back sides of said apparatus, said liquid crystal display device being visible from areas of said apparatus adjacent both the front and back sides thereof; a movable plate located adjacent the back side of said apparatus, said plate being movable between a first position unobstructing said liquid crystal display device and a second position behind said liquid crystal display device; and means for enabling movement of said plate between said first and second positions, said liquid crystal display device being transmissive when said plate is in the first position such that said area of said apparatus adjacent the front side, said liquid crystal display device and said area of said apparatus adjacent the back side are capable of being seen through, and said liquid crystal display device being reflective when said plate is in the second position such that the view through said liquid crystal display device and the area of said apparatus adjacent the back side is blocked.
Claim 3
Dependent Claim
34 words
The electronic apparatus as recited in claim 1, further comprising a cabinet supporting said liquid crystal display device, said areas adjacent the front and back sides of the apparatus being windows in said cabinet.
Claim 4
Dependent Claim
37 words
The electronic apparatus as recited in claim 1, wherein said means for enabling movement comprises tracks mounted at the back side of said apparatus for permitting sliding of said movable plate between said first and second positions.
Claim 5
Dependent Claim
53 words
The electronic apparatus as recited in claim 3, wherein said apparatus has an elongated slit in the back side thereof, and said plate has an opening therein in alignment with said slit, said slit and opening permitting insertion of an element therethrough whereafter movement of said element slides said plate along said tracks.
Claim 6
Dependent Claim
38 words
The electronic apparatus as recited in claim 1, wherein said means for enabling movement comprises a pivot shaft at the back side of said apparatus for permitting pivoting of said movable plate between said first and second positions.
Claim 7
Dependent Claim
39 words
The electronic apparatus as recited in claim 1, wherein said liquid crystal display device comprises transparent substrates, a liquid crystal layer sandwiched between said substrates, and a polarizer plate mounted on the outside surface of each of said substrates.
Claim 8
Dependent Claim
16 words
The electronic apparatus as recited in claim 1, wherein said apparatus is used in a calculator.
References Cited (Backward Citations)
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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) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |