US3751137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display device
Assignee: Boeing North American Inc
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Filing: 1971-10-18
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Granted: 1973-08-07
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Expires: 1991-10-18
Abstract
Abstract The device has top and bottom plates including one projecting edge for supporting conductor input leads. The plates are separated as well as secured together by a glass frit raised border. A liquid crystal material is injected, via openings in the border along the edge of the two plates, into the space between the two plates. Transparent and conductive segments comprising the display characters are formed on the inner surface of one of the plates. Conductive elements corresponding to each of the display characters are formed on the inner surface of the opposite plate. A reflective type display includes a reflecting layer on the outer surface of the second plate.
Inventors
- 👤 E Fitzgibbons
- 👤 R Slowinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:58
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1339; G02F1/1341; G02F1/1345
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
48 words
The liquid crystal display device recited in claim 1 wherein said first set of conductors is comprised of a reflecting material, and wherein said first plate further includes a reflecting layer disposed on the back surface thereof whereby a reflective type of liquid crystal display device is formed.
Claim 2
Dependent Claim
35 words
The liquid crystal display device recited in claim 1 wherein said first and second sets of conductor electrodes are comprised of a transparent conducting material whereby a transmissive type of liquid crystal display is formed.
Claim 3
Dependent Claim
83 words
A liquid crystal display device as recited in claim 1 including a circuit board for supporting said liquid crystal display device, electronic means at said circuit board for providing drive voltages to said liquid crystal display device, said cricuit board including an opening for accommodating one of said first and second plates, said opening having a configuration for enabling the extended portion of said first or second plate to be used in mounting the liquid crystal display device to the printed circuit board.
References Cited (Backward Citations)
US3499112A
Cited
US3505804A
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US3592526A
Cited
US3647280A
Cited
US3625591A
Cited
US3674341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |