US3799649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Haze barrier for liquid crystal display
Assignee: American Microsystems Holding Corp
•
Filing: 1973-03-06
•
Granted: 1974-03-26
•
Expires: 1993-03-06
Abstract
Abstract A liquid crystal display device comprised of a pair of spaced apart glass plates joined together by a peripheral seal to form a planar cavity for liquid crystal material utilizes an internal barrier spaced from one end of the seal having a plugged opening. The barrier helps to prevent the plug from being pushed out and also reduces the migration of haze forming impurities from the plug into the cavity.
Inventors
- 👤 J Carlyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:36
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1341
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
105 words
In a liquid crystal display comprised of a pair of glass plates spaced evenly apart and bonded together by a peripheral seal to form a cavity between the plates, said cavity containing liquid crystal material and said seal having a small opening through which said liquid crystal material is introduced into said cavity between the plates, the improvement comprising an elongated internal barrier member spaced inwardly from said seal opening, said barrier member occupying the space between said plates along its length and said length terminating at ends spaced from opposite sides of said peripheral seal opening, and a plug member in said seal opening.
Claim 2
Dependent Claim
105 words
In a liquid crystal display comprised of a pair of glass plates spaced evenly apart and bonded together by a peripheral seal to form a cavity between the plates, said cavity containing liquid crystal material and said seal having a small opening through which said liquid crystal material is introduced into said cavity between the plates, the improvement comprising an elongated internal barrier member spaced inwardly from said seal opening, said barrier member occupying the space between said plates along its length and said length terminating at ends spaced from opposite sides of said peripheral seal opening, and a plug member in said seal opening.
Claim 3
Dependent Claim
23 words
The liquid crystal display as described in claim 1 wherein said plug member extends through said opening and abuts against said barrier member.
Claim 4
Dependent Claim
24 words
The liquid crystal display as described in claim 1 wherein said plug member abuts against said barrier member and has a generally T-shaped configuration.
Claim 5
Dependent Claim
23 words
The liquid crystal display as described in claim 1 wherein said barrier member is made of the same material as said peripheral seal.
References Cited (Backward Citations)
US2319234A
Cited
US3751137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |