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ELECTROPHORETIC DISPLAY CELL

IP.com Disclosure Number: IPCOM000023962D
Original Publication Date: 1979-Jun-30
Included in the Prior Art Database: 2004-Apr-01
Document File: 2 page(s) / 250K

Publishing Venue

Xerox Disclosure Journal

Abstract

An electrophoretic device which will inhibit settlement of large pigment agglomerates after a period of time due to the force of gravity. The device comprises a multLcell construction positioned between two spaced electrodes, a

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XEROX DISCLOSURE JOURNAL

ELECTROPHORETIC DISPLAY CELL Proposed3oseph S~Rus Classification

U.S. Cl. 204/299

mt. Cl. BOld 13/02

An electrophoretic device which will inhibit settlement of large pigment agglomerates after a period of time due to the force of gravity. The device comprises a multLcell construction positioned between two spaced electrodes, a

transparent viewing electrode 1 and a rear electrode 2. Each cell 3 is in the shape of a funnel including a flared lead portion 4 facing the viewing electrode I and a

narrow, tubular rear portion 5 terminating at the rear electrode 2. Attached to the viewing electrode 1 and associated with each cell 3 is a small opaque or highly

reflective dot 6 having the exact diameter and being coaxial with the tubular portion 5. The cells are filled with a dye and pigment particle solution 7.

When a cell is HOFF", the pigment resides in the tubular rear portion 5 and is hidden from view by the dot 6, When the cell is addressed and turned ~ the particles migrate toward the viewing electrode 1 into the flared portion 4 of the cell, thus causing that cell to be visibly darker.

~OFF~

Volume 4 Number 3 May/3une 1979 309

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