Stephen P English

US Patent:

20110164067, Jul 7, 2011

Filed:

Jan 5, 2010

Appl. No.:

12/652477

Inventors:

Stephen R. Lewis - Reading MA, US
Stephen English - Billerica MA, US
Abraham McAllister - Annandale VA, US

Assignee:

Pixtronix, Inc. - Andover MA

International Classification:

G09G 5/10
G09G 3/34

US Classification:

345690, 345 84

Abstract:

The invention relates to methods and apparatus for forming images on a display utilizing a control matrix to control the movement of MEMS-based light modulators.

US Patent:

20130176611, Jul 11, 2013

Filed:

Jul 12, 2012

Appl. No.:

13/548007

Inventors:

Stephen Lewis - Reading MA, US
Stephen English - Billerica MA, US
Jianguo Yao - Londonderry NH, US
John DeRoo - Hopkinton MA, US
Roger W. Barton - Afton MN, US

International Classification:

G02B 26/02

US Classification:

359291

Abstract:

A display apparatus includes an array of light modulators. Each light modulator has a first actuator configured to drive the light modulator into a first state and a second actuator configured to drive the light modulator into a second state. The display apparatus also includes a control matrix including, for each light modulator in the array, a single actuation voltage interconnect. The actuation voltage interconnect is configured to apply a first drive voltage to the first actuator of the light modulator and apply a second drive voltage to the second actuator of the light modulator. In addition, the actuation voltage interconnect is configured to control application of a data voltage to a latch circuit to control the application of the first and second drive voltages to the first and second actuators.

US Patent:

57453233, Apr 28, 1998

Filed:

Jun 30, 1995

Appl. No.:

8/496933

Inventors:

Stephen T. English - Groveland MA
Edward L. Wolfe - North Andover MA

Assignee:

Analog Devices, Inc. - Norwood MA

International Classification:

H02H 900

US Classification:

361 56

Abstract:

An apparatus and method for protecting semiconductor switching devices from damage due to electrostatic discharge is provided. The apparatus detects the occurrence of an ESD event, and turns the switching circuit to an operating state in which electrostatic charge is dissipated through the switching circuit. In embodiments of the invention, the switching circuit is a CMOS inverter circuit and the apparatus includes a PMOS transistor that upon occurrence of an ESD event couples an output of the inverter circuit to ground to discharge the electrostatic charge.

US Patent:

59176890, Jun 29, 1999

Filed:

Sep 12, 1996

Appl. No.:

8/710183

Inventors:

Stephen T. English - Groveland MA
Eric Nestler - Harvard MA
Andrew H. Olney - Burlington MA

Assignee:

Analog Devices, Inc. - Norwood MA

International Classification:

H02H 322

US Classification:

361 56

Abstract:

An apparatus and method for protecting integrated circuits from electrical overstress and eletrostatic discharge is provided. The apparatus includes a primary EOS/ESD protection device and a feedback circuit. The feedback circuit maintain the primary EOS/ESD protection device in an off state during normal operation of the integrated circuit and switches the primary protection device to an state when an EOS/ESD event occurs at a first input pad with respect to a second input pad of the integrated circuit.

US Patent:

20140268273, Sep 18, 2014

Filed:

Mar 15, 2013

Appl. No.:

13/842436

Inventors:

- San Diego CA, US
Eugene Fike - Amesbury MA, US
Jianru Shi - Haverhill MA, US
Cait Ni Chleirigh - Arlington MA, US
Stephen English - Billerica MA, US
Nesbitt Hagood - Gloucester MA, US
Stephen R. Lewis - Reading MA, US
Javier Villarreal - Somerville MA, US

Assignee:

PIXTRONIX, INC. - San Diego CA

International Classification:

G02B 26/02

US Classification:

359230, 264 17, 156242

Abstract:

This disclosure provides systems, methods and apparatus for displaying images. One such apparatus includes a substrate, an elevated aperture layer (EAL) defining a plurality of apertures formed therethrough, a plurality of anchors for supporting the EAL over the substrate and a plurality of display elements positioned between the substrate and the EAL. Each of the display elements may correspond to at least one respective aperture of the plurality of apertures defined by the EAL. Each display element also includes a movable portion supported over the substrate by a corresponding anchor supporting the EAL over the substrate. In some implementations, one or more light dispersion elements may be disposed in optical paths passing through the apertures defined by the EAL.