EP0203569A1
Expired / Lapsed
EP
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Ferroelectric liquid crystal cell and its manufacturing method
Assignee: Hosiden Electronics Co Ltd
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Filing: 1986-05-27
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Granted: —
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Expires: 2006-05-27
Abstract
Abstract A method for the manufacture of a ferroelectric liquid crystal cell which includes ferroelectric liquid crystal sealed in between a pair of opposed but spaced plates (13, 14), each having formed on one surface a pattern of conductive layer (11, 12), the plates (13, 14) being disposed with their conductive layers (11, 12) facing each other, the surfaces of the plates (13, 14) are respectively rubbed in at least two directions (16, 17) prior to the sealing of the ferroelectric liquid crystal.
Inventors
- 👤 Katsumi Yoshino
- 👤 Yasuhiro Shigeno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 13:04
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/1368; G02F1/1333; G02F1/1337; G02F1/133753; G02F1/137; G02F1/139; G02F1/141; G02F1/133757; G02F1/13378; G02F1/133784
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
81 words
A method for the manufacture of a ferroelectric liquid crystal cell in which a pair of plates, each coated over one surface with a conductive layer, are disposed in adjacent but spaced relation, with their conductive layers facing each other, and ferroelectric liquid crystal is sealed between the opposed plates, characterized by; subjecting the plates to surface rubbing treatment in at least two directions for providing the orientation of liquid crystal molecules, prior to the sealing of the ferroelectric liquid crystal.
Claim 2
Independent Claim
81 words
A method for the manufacture of a ferroelectric liquid crystal cell in which a pair of plates, each coated over one surface with a conductive layer, are disposed in adjacent but spaced relation, with their conductive layers facing each other, and ferroelectric liquid crystal is sealed between the opposed plates, characterized by; subjecting the plates to surface rubbing treatment in at least two directions for providing the orientation of liquid crystal molecules, prior to the sealing of the ferroelectric liquid crystal.
Claim 3
Dependent Claim
24 words
The manufacturing method according to claim 1 wherein one of the plates is subjected to the surface rubbing treatment in at least two direction.
Claim 4
Dependent Claim
24 words
The manufacturing method according to claim 1 wherein the two plates are both subjected to the surface rubbing treatment in at least two directions.
Claim 5
Dependent Claim
42 words
The manufacturing method according to claim 1 wherein the surface rubbing treatment in at least two directions is to rub the surface of one of the plates in one direction and the surface of the other in at least the other direction.
Claim 6
Dependent Claim
46 words
The manufacturing method according to claim 1 wherein the surface rubbing treatment in at least two directions is to rub the surface of one of the plates in one direction and the surface of the other in that one direction and at least the other direction.
Claim 7
Dependent Claim
22 words
The manufacturing method according to any one of claims 1 to 5 wherein the surface rubbing treatment is performed in two directions.
Claim 8
Dependent Claim
27 words
The manufacturing method according to claim 6 wherein the angle between the two rubbing directions is substantially twice the tilt angle of the ferroelectric liquid crystal molecules.
Claim 9
Dependent Claim
22 words
The manufacturing method according to any one of claims 2 to 5 wherein the surface rubbing treatment is performed in three directions.
Claim 10
Dependent Claim
32 words
The manufacturing method according to claim 8 wherein the angles between two adjacent ones of the three rubbing directions are each equal to the tilt angle of the ferroelectric liquid crystal molecules.
Claim 11
Dependent Claim
39 words
The manufacturing method according to any one of claims 2 to 5 wherein the plate or plates to be subjected to the surface rubbing treatment are each coated with a high molecular material layer for the surface rubbing treatment.
Claim 12
Dependent Claim
87 words
A ferroelectric liquid crystal cell comprising: a pair of opposed but spaced plates (13, 14), each having formed on one surface a pattern of conductive layer (11, 12), the plates (13, 14) being disposed with their conductive layers (11, 12) facing each other; and ferroelectric liquid crystal sealed in between the opposed plates; wherein the plates (13, 14) have their surfaces subjected to surface rubbing treatment in at least two directions (16, 17) as a whole, for providing the orientation of molecules of the ferroelectric liquid crystal.
Claim 13
Dependent Claim
87 words
A ferroelectric liquid crystal cell comprising: a pair of opposed but spaced plates (13, 14), each having formed on one surface a pattern of conductive layer (11, 12), the plates (13, 14) being disposed with their conductive layers (11, 12) facing each other; and ferroelectric liquid crystal sealed in between the opposed plates; wherein the plates (13, 14) have their surfaces subjected to surface rubbing treatment in at least two directions (16, 17) as a whole, for providing the orientation of molecules of the ferroelectric liquid crystal.
References Cited (Backward Citations)
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