US3867015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal cell and method of fabrication
Assignee: AGC Inc
•
Filing: 1973-05-23
•
Granted: 1975-02-18
•
Expires: 1993-05-23
Abstract
Abstract A fluoroalkyl compound which consists of a functional component having an affinity or reactivity for the inner surfaces of a liquid crystal cell eliminates the turbidity associated with the inner surfaces of the liquid crystal cells. The cell comprises a pair of sealed plates (at least one of which is transparent) which have electro-conductive films coated on the inner surfaces thereof and a liquid crystal material between the pair of plates of the cell.
Inventors
- 👤 Shuichi Iida
- 👤 Takao Hayashi
- 👤 Satoshi Noguchi
- 👤 Shigemasa Furuuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:46
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133711; C; C09; C09K; C09K19/00; C09K19/52; C09K19/54; C09K19/56; C09K2323/00; C09K2323/05; C09K2323/053; C09K2323/057; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
81 words
IN A LIQUID CRYSTAL CELL COMPRISING A PAIR OF SUBSTRATES EACH COVERED WITH AN ELECTRO-CONDUCTIVE FILM WHEREIN AT LEAST ONE OF THE SUBSTRATES IS TRANSPARENT AND WHEREIN A LIQUID CRYSTAL MATERIAL FILLS THE SPACE BETWEEN THE SUBSTRATES, THE PERIPHERY OF THE SUBSTRATES BEING SEALED, THE IMPROVEMENT WHICH COMPRISES APPLYING TO THE INNER SURFACE OF THE CELL A FUNCTIONAL FLUOROALKYL COMPOUND CONTAINING A FLUOROALKYL COMPONENT AND A FUNCTIONAL COMPONENT WHICH HAS AN AFFINITY AND REACTIVITY TO THE INNER SURFACE OF THE CELL.
Claim 2
Dependent Claim
81 words
IN A LIQUID CRYSTAL CELL COMPRISING A PAIR OF SUBSTRATES EACH COVERED WITH AN ELECTRO-CONDUCTIVE FILM WHEREIN AT LEAST ONE OF THE SUBSTRATES IS TRANSPARENT AND WHEREIN A LIQUID CRYSTAL MATERIAL FILLS THE SPACE BETWEEN THE SUBSTRATES, THE PERIPHERY OF THE SUBSTRATES BEING SEALED, THE IMPROVEMENT WHICH COMPRISES APPLYING TO THE INNER SURFACE OF THE CELL A FUNCTIONAL FLUOROALKYL COMPOUND CONTAINING A FLUOROALKYL COMPONENT AND A FUNCTIONAL COMPONENT WHICH HAS AN AFFINITY AND REACTIVITY TO THE INNER SURFACE OF THE CELL.
Claim 3
Dependent Claim
34 words
The liquid crystal cell according to claim 1, wherein the functional component of said functional fluoroalkyl compound contains a functional group which has an affinity or reactivity for the inner surface of the cell.
Claim 4
Dependent Claim
25 words
The liquid crystal cell according to claim 1, wherein said functional component is an alcohol, polyol, amine, polyamine, ester, amide, alkoxysilane, halogenosilane, polyoxyethylene, or polyether.
Claim 5
Dependent Claim
26 words
The liquid crystal cell according to claim 1, wherein said functional fluoroalkyl compound is selected from the group consisting of CnF2n 1(CH2)mOH, (CF3)2 - CnF2n 1(CH2)mOH,
Claim 6
Dependent Claim
88 words
In a method of fabricating a liquid crystal cell by forming a cell from a pair of substrates coated with electroconductive films, one of which is transparent, and disposed at a predetermined distance from each other, filling said cell with a liquid crystal material and sealing said cell, the improvement which comprises: coating the inner surfaces of said cell with a functional fluoroalkyl compound containing a fluoroalkyl component and a functional component, wherein said functional component has an affinity or reactivity to the inner surface of said cell.
Claim 7
Dependent Claim
88 words
In a method of fabricating a liquid crystal cell by forming a cell from a pair of substrates coated with electroconductive films, one of which is transparent, and disposed at a predetermined distance from each other, filling said cell with a liquid crystal material and sealing said cell, the improvement which comprises: coating the inner surfaces of said cell with a functional fluoroalkyl compound containing a fluoroalkyl component and a functional component, wherein said functional component has an affinity or reactivity to the inner surface of said cell.
Claim 8
Dependent Claim
45 words
The method according to claim 5, wherein the inner surfaces of said substrate which form said cell are treated with the functional fluoroalkyl compound, and wherein the inner surfaces of said cell are washed and dried before filling said cell with the liquid crystal material.
Claim 9
Dependent Claim
34 words
The method according to claim 5, wherein 1 - 5% by weight of said functional fluoRoalkyl compound is added to said liquid crystal material in order to treat the inner surfaces of said cell.
Claim 10
Dependent Claim
22 words
The method according to claim 5, wherein said functional fluoroalkyl compound is selected from the group consisting of CnF2n 1(CH2)mOH, (CF3)2CnF2n 1(CH2)mOH,
References Cited (Backward Citations)
US3728008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |