CA2229809A1 - Twisting-cylinder display - Google Patents

Twisting-cylinder display

Info

Publication number
CA2229809A1
CA2229809A1 CA002229809A CA2229809A CA2229809A1 CA 2229809 A1 CA2229809 A1 CA 2229809A1 CA 002229809 A CA002229809 A CA 002229809A CA 2229809 A CA2229809 A CA 2229809A CA 2229809 A1 CA2229809 A1 CA 2229809A1
Authority
CA
Canada
Prior art keywords
substrate
particle
particles
rotatable
cylinders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002229809A
Other languages
French (fr)
Other versions
CA2229809C (en
Inventor
Nicholas K. Sheridon
Joseph M. Crowley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
Original Assignee
Xerox Corporation
Nicholas K. Sheridon
Joseph M. Crowley
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xerox Corporation, Nicholas K. Sheridon, Joseph M. Crowley filed Critical Xerox Corporation
Publication of CA2229809A1 publication Critical patent/CA2229809A1/en
Application granted granted Critical
Publication of CA2229809C publication Critical patent/CA2229809C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G02B26/026—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light based on the rotation of particles under the influence of an external field, e.g. gyricons, twisting ball displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
    • G09F9/372—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the positions of the elements being controlled by the application of an electric field

Abstract

A gyricon or twisting-particle display based on nonspheroidal (e.g., substantially cylindrical) optically anisotropic particles disposed in a substrate. The particles can be bichromal cylinders, preferably aligned parallel to one another and packed close together in a monolayer.
A rotatable disposition of each particle is achievable while the particle is thus disposed in the substrate; for example, the particles can already be rotatable in the substrate, or can be rendered rotatable in the substrate by a nondestructive operation performed on the-substrate.
In particular, the substrate can be made up of an elastomer that is expanded by application of a fluid thereto so as to render the particles rotatable therein. A particle, when in its rotatable disposition, is not attached to the substrate. The close-packed monolayer configuration of particles provides excellent brightness characteristics and relative ease of manufacture as compared with certain other high-brightness gyricon displays. The substrate containing the cylinders can be fabricated with the swelled-elastomer techniques known from spherical-particle gyricon displays, with a simple agitation process step being used to align the cylinders within the sheeting material. Techniques for fabricating the cylinders are also disclosed.
CA002229809A 1996-06-27 1997-06-25 Twisting-cylinder display Expired - Fee Related CA2229809C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US2052296P 1996-06-27 1996-06-27
US2065196P 1996-06-27 1996-06-27
US60/020,522 1996-06-27
US60/020,651 1996-06-27
US08/716,672 US6055091A (en) 1996-06-27 1996-09-13 Twisting-cylinder display
US08/716,672 1996-09-13
PCT/US1997/010123 WO1997050071A1 (en) 1996-06-27 1997-06-25 Twisting-cylinder display

Publications (2)

Publication Number Publication Date
CA2229809A1 true CA2229809A1 (en) 1997-12-31
CA2229809C CA2229809C (en) 2005-10-18

Family

ID=27361457

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002229809A Expired - Fee Related CA2229809C (en) 1996-06-27 1997-06-25 Twisting-cylinder display

Country Status (10)

Country Link
US (1) US6055091A (en)
EP (1) EP0846314B1 (en)
JP (1) JPH11514104A (en)
CN (1) CN1147830C (en)
AU (1) AU3387597A (en)
BR (1) BR9702327A (en)
CA (1) CA2229809C (en)
DE (1) DE69708029T2 (en)
MX (1) MX9801551A (en)
WO (1) WO1997050071A1 (en)

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