North American Philips Corporation

Thomas M Marshall

John Petruzzello

Edward H Stupp

James M Gaines

Kevin W Haberern

Piotr M Mensz

Ronald R Drenten

A blue-green II/VI semiconductor injection laser utilizing a Zn.sub.1-u Cd.sub.u Se active layer (quantum well) having Zn.sub.1-x Mg.sub.x S.sub.y Se.sub.1-y cladding layers and ZnS.sub.z Se.sub.1-z guiding layers on a GaAs substrate. These devices are operable in a pulse mode at room temperature.

Blue-green injection laser structure utilizing II-VI compounds

An electrophoretic display device is set forth having various electrode schemes in order to modulate transmission of light through the device. The electrophoretic particles of the suspension form an imaging structure relating to an array of small unit cells or pixels which are turned on or off by appropriate electrical signals. Accordingly, the pigment particles totally cover transparent electrodes, which condition can be changed by applying the appropriate electric field to the opposite electrode. By this structure, various alphanumeric displays can be constructed.

Electrode configurations for an electrophoretic display device

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Brooklyn, NY, United States of America

Thomas M Marshall