US4784883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal cell and method of assembly of same
Assignee: Tektronix Inc
•
Filing: 1987-05-05
•
Granted: 1988-11-15
•
Expires: 2007-05-05
Abstract
Abstract A liquid crystal cell (40) for an electron beam-addressed liquid crystal light valve has a rigid glass substrate (16) and target substrate (44) formed of thin flexible material. The cell (40) is constructed so that the spacing between the flexible substrate (44) and the rigid substrate (16) is precisely maintained. A fixture (72) is employed for attaching the target substrate (44) to the rim (102) of the light valve body (14) prior to assembly of the cell (40).
Inventors
- 👤 Donald P. Chitwood
- 👤 Raymond D. Wilson
- 👤 Duane A. Haven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:25
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133348; C; C09; C09K; C09K2323/00; C09K2323/05
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
A liquid crystal cell mounted to an annular rim, comprising: (a) a flexible substrate, the edge of the flexible substrate being attached to the rim; (b) a rigid substrate, one surface of the rigid substrate having a substantially flat central portion and a beveled edge; (c) spacer means positioned between the flexible and rigid substrates for maintaining space between the flexible substrate and the central portion of the surface of the rigid substrate; and (d) bonding means for securing the beveled edge of the rigid substrate adjacent to the rim, the rigid substrate and rim being configured and arranged so that the flexible substrate is stretched when the rigid substrate is secured adjacent to the rim.
Claim 2
Dependent Claim
116 words
A liquid crystal cell mounted to an annular rim, comprising: (a) a flexible substrate, the edge of the flexible substrate being attached to the rim; (b) a rigid substrate, one surface of the rigid substrate having a substantially flat central portion and a beveled edge; (c) spacer means positioned between the flexible and rigid substrates for maintaining space between the flexible substrate and the central portion of the surface of the rigid substrate; and (d) bonding means for securing the beveled edge of the rigid substrate adjacent to the rim, the rigid substrate and rim being configured and arranged so that the flexible substrate is stretched when the rigid substrate is secured adjacent to the rim.
Claim 3
Dependent Claim
47 words
The liquid crystal cell of claim 1 wherein the rim defines an aperture, and wherein the central portion of the rigid substrate surface is disposed within the aperture and at least a portion of the beveled edge of the rigid substrate is disposed outside of the aperture.
Claim 4
Dependent Claim
40 words
The liquid crystal cell of claim 2 wherein the rigid substrate is configured to form a gap between the rim and the portion of the beveled edge disposed outside of the aperture, the gap configured to receive the bonding means.
Claim 5
Dependent Claim
25 words
The liquid crystal cell of claim 1 further including filling means for delivering liquid crystal material to the space between the flexible and rigid substrates.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |