Patent US3799651A successfully refreshed from Google Patents.
US3799651A
Expired / Lapsed
US
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Liquid crystal display cell and method of making same
Assignee: NCR Voyix Corp
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Filing: 1972-06-01
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Granted: 1974-03-26
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Expires: 1992-06-01
Abstract
Abstract A liquid crystal display cell having a channel formed in one of the glass plates of the cell is disclosed. The channel facilitates the filling of the cell with a liquid crystal material. The other glass plate of the cell contains an aperture through which the cell is filled. The aperture is opposite a portion of the channel.
Inventors
- 👤 J Janning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:21
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1341
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
177 words
A liquid crystal display cell comprising: a. a first panel having first and second surfaces; b. a second panel, having first and second surfaces, parallel to the first panel and spaced therefrom, the first surface of the first panel facing the first surface of the second panel; c. a filler channel disposed within the first surface of the second panel, the filler channel extending into the second panel by a distance greater than the spacing between the panels and being in the form of a substantially closed loop adjacent the edges of the second panel; d. sealer means disposed about the edges of and between the first and second panels; e. an aperture disposed within the first panel extending between and through the first and second surfaces thereof and positioned adjacent a portion of the filler channel; and f. a hollow filler tube connected to the second surface of the first panel in alignment with the aperture, the filler channel and the region between the first and second panels defining a volume for holding liquid crystal material.
Claim 2
Dependent Claim
177 words
A liquid crystal display cell comprising: a. a first panel having first and second surfaces; b. a second panel, having first and second surfaces, parallel to the first panel and spaced therefrom, the first surface of the first panel facing the first surface of the second panel; c. a filler channel disposed within the first surface of the second panel, the filler channel extending into the second panel by a distance greater than the spacing between the panels and being in the form of a substantially closed loop adjacent the edges of the second panel; d. sealer means disposed about the edges of and between the first and second panels; e. an aperture disposed within the first panel extending between and through the first and second surfaces thereof and positioned adjacent a portion of the filler channel; and f. a hollow filler tube connected to the second surface of the first panel in alignment with the aperture, the filler channel and the region between the first and second panels defining a volume for holding liquid crystal material.
Claim 3
Dependent Claim
39 words
The liquid crystal display cell of claim 1 further comprising a first transparent electrode film disposed on the first surface of the first panel; and a second transparent electrode film disposed on the first surface of the second panel.
Claim 4
Dependent Claim
17 words
The liquid crystal display cell of claim 2, further comprising liquid crystal material disposed within the volume.
Claim 5
Dependent Claim
19 words
The liquid crystal display cell of claim 3 wherein the liquid crystal material is a nematic liquid crystal material.
Claim 6
Dependent Claim
15 words
The liquid crystal display cell of claim 1 wherein the hollow filling tube is glass.
Claim 7
Dependent Claim
16 words
The liquid crystal display cell of claim 1 wherein the first and second panels are glass.
Claim 8
Independent Claim
166 words
A method of manufacTuring a liquid crystal display cell, comprising: a. forming a closed container of first and second spaced, parallel panels being sealed about the edges, the second panel having a filler channel extending into its interior surface by a distance greater than the spacing between the panels, the filler channel being in the form of a substantially closed loop adjacent the edges of the second panel; b. connecting a filler tube to the outer surface of the first panel of the closed container in registry with both a filler aperture extending through the first panel and with the filler channel; c. placing liquid crystal material in said filler tube; d. pumping the interior of the closed container and filler tube to substantially free the container of gas; e. sealing the filler tube while the closed container is under vacuum; and f. heating the filled closed container to evenly distribute the liquid crystal material through the body of the closed container from the filler tube.
Claim 9
Independent Claim
166 words
A method of manufacTuring a liquid crystal display cell, comprising: a. forming a closed container of first and second spaced, parallel panels being sealed about the edges, the second panel having a filler channel extending into its interior surface by a distance greater than the spacing between the panels, the filler channel being in the form of a substantially closed loop adjacent the edges of the second panel; b. connecting a filler tube to the outer surface of the first panel of the closed container in registry with both a filler aperture extending through the first panel and with the filler channel; c. placing liquid crystal material in said filler tube; d. pumping the interior of the closed container and filler tube to substantially free the container of gas; e. sealing the filler tube while the closed container is under vacuum; and f. heating the filled closed container to evenly distribute the liquid crystal material through the body of the closed container from the filler tube.
Claim 10
Dependent Claim
22 words
The method of claim 7 wherein the interior of the closed container is pumped to a pressure of approximately 10 micro Torr.
Claim 11
Dependent Claim
40 words
The method of claim 7 wherein the closed container is heated to approximately 215* C. for approximately 12 hours to cause the liquid crystal material to be evenly redistributed through the body of said closed container from the filler tube.
Claim 12
Dependent Claim
38 words
The method of claim 7 wherein the closed container is ultrasonically vibrated while it is being heated to cause the liquid crystal material to be evenly redistributed through the body of said closed container from the filler tube.
References Cited (Backward Citations)
US3701368A
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 |