Hewlett-Packard Development Company, L.p.

Hung Liao

Zhizhang Chen

Alexander N Govyadinov

Michael A Pate

Bao-Sung Bruce Yeh

Sriram Ramamoorthi

Paul J Benning

A transistor includes a base, a collector, and an emitter comprising a group III/VI semiconductor. Microcircuits having at least one metal oxide semiconductor (MOS) transistor and the previously described transistor are provided. Processes for manufacturing a transistor and a BiMOS microcircuit are also provided.

Transistor with group III/VI emitter

An emitter has an electron supply and a porous cathode layer having nanohole openings. The emitter also has a tunneling layer disposed between the electron supply and the cathode layer.

Tunneling emitter with nanohole openings

A transistor includes a means for providing a non-silicon-based emitter with a flexible structure to relieve lattice mis-match between the emitter and the base.

Transistor with means for providing a non-silicon-based emitter

A method for emitting electrons includes the steps of applying a voltage to an electron source to cause hot electrons to be generated with the source, and applying an electric field to cause at least a portion of the hot electrons to be emitted from the electron source.

Dielectric emitter with PN junction

A light modulator has one or more gratings and one or more MEMS actuators operable to move the gratings for selectively modulating light from an input light source. Certain embodiments have a plurality of blazed gratings arranged parallel to a plane and movable linearly parallel to the plane by MEMS actuators. Each of the gratings is individually blazed for light of a selected color such as red, green or blue. Associated with the gratings may be portions providing black and/or white outputs. An aperture spaced apart from the plane allows color(s) selected from an input white-light source to be directed to an output. An array of MEMS-actuated modulation devices provides a color spatial light modulator. Other embodiments have a grating adapted to be tilted by a MEMS actuator, either continuously through a range of angles or to a selected angle of a set of predetermined discrete angles, to direct selected wavelengths diffracted by the grating toward collection optics for a modulated light output. Methods specially adapted for making and using such light modulators are disclosed.

Growing community of inventors

Corvallis, OR, United States of America

Hung Liao