Ellsworth M Murley

US Patent:

40099377, Mar 1, 1977

Filed:

Sep 8, 1975

Appl. No.:

5/611032

Inventors:

Ellsworth M. Murley - Toledo OH
Allen Davis - Toledo OH

Assignee:

Owens-Illinois, Inc. - Toledo OH

International Classification:

G02F 316

US Classification:

350160R

Abstract:

A system for the multiplex addressing of a colloidal light valve array. An array of individual sites or cells is made using a colloidal light valve (CLV) material which has a light transmission curve that is a function of the frequency of the applied potential across the site or cell. The array is generally defined by rows and columns of electrical conductors. The intersections of the rows and column define sites or are at individual cells. Any one site may be uniquely addressed by supplying this site with a high frequency electrical signal and a low frequency electrical signal during one time period and with two low frequency electrical signals during a second time period. Non-selected or non-addressed sites are supplied with combinations of high frequency and low frequency electrical signals during the two time periods to force the average light transmission valve of these nonselected sites to be the compliment of the average light transmission of the addressed site.