Charles A Rowell

US Patent:

6376007, Apr 23, 2002

Filed:

Jun 1, 2000

Appl. No.:

09/585213

Inventors:

Charles A. Rowell - Tempe AZ
David W. Jacobs - Mesa AZ
Edward A. Zarbock - Gilbert AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

B05D 128

US Classification:

427 11, 427 64, 427 68, 427 77, 427108, 427123, 4271261, 427266, 427287

Abstract:

A method of marking glass includes providing a glass material with a surface ( ) and using a wire ( ) to mark the surface. The wire is softer than the glass material and does not damage the surface of the glass material.

US Patent:

6051924, Apr 18, 2000

Filed:

Jun 17, 1998

Appl. No.:

9/098841

Inventors:

Jeffery A. Whalin - Fountain Hills AZ
Arthur J. Ingle - Chandler AZ
Charles A. Rowell - Tempe AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J 6304

US Classification:

313495

Abstract:

A field emission device (100, 200) includes a cathode plate (102) having a plurality of electron emitters (532), an anode plate (104) disposed to receive electrons emitted by plurality of electron emitters (532), a frame (109) interposed between cathode plate (102) and anode plate (104) and defining a central opening (112), a mating member (110, 210, 310, 410, 510) coextensive with frame (109) and disposed within central opening (112), and a getter structure (114, 214, 314, 414, 514, 614) mated with mating member (110, 210, 310, 410, 510).

US Patent:

59613629, Oct 5, 1999

Filed:

Sep 9, 1997

Appl. No.:

8/927367

Inventors:

Babu Chalamala - Chandler AZ
Arthur J. Ingle - Chandler AZ
Charles Rowell - Tempe AZ
Thomas L. Credelle - Phoenix AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J 938

US Classification:

445 59

Abstract:

A method for in situ cleaning of electron emitters (126, 226, 326, 526) in a field emission device (100, 200, 300, 400, 500) includes the steps of controllably providing hydrogen gas (142, 242, 342, 542) within the field emission device (100, 200, 300, 400, 500) at a time during the operational life of the field emission device (100, 200, 300, 400, 500) and, thereafter, emitting electrons from the electron emitters (126, 226, 326, 526), thereby forming hydrogen free radicals, which decontaminate and condition the emissive surfaces of the electron emitters (126, 226, 326, 526).

US Patent:

60911905, Jul 18, 2000

Filed:

Jul 28, 1997

Appl. No.:

8/901734

Inventors:

Babu R. Chalamala - Chandler AZ
Sung P. Pack - Tempe AZ
Charles A. Rowell - Tempe AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J 130

US Classification:

313346R

Abstract:

An electron emitter (121, 221, 321, 421) includes an electron emitter structure (118) having a passivation layer (120, 220, 320, 420) formed thereon. The passivation layer (120, 220, 320, 420) is made from an oxide selected from a group consisting of the oxides of Ba, Ca, Sr, In, Sc, Ti, Ir, Co, Sr, Y, Zr, Ru, Pd, Sn, Lu, Hf, Re, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Th, and combinations thereof. In the preferred embodiment, the electron emitter structure (118) is made from molybdenum, and the passivation layer (120, 220, 320, 420) is made from an emission-enhancing oxide having a work function that is less than the work function of the molybdenum.

US Patent:

58834672, Mar 16, 1999

Filed:

Sep 9, 1997

Appl. No.:

8/925783

Inventors:

Babu Chalamala - Chandler AZ
Arthur J. Ingle - Chandler AZ
Charles Rowell - Tempe AZ
Thomas L. Credelle - Phoenix AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J 1724

US Classification:

313553

Abstract:

A field emission device (100, 200) includes a cathode plate (110, 210), an anode plate (112, 212) spaced from the cathode plate (110, 210) to define an interspace region (114, 214) therebetween, a hole (144, 244) defined by the device package and in communication with the interspace region (114, 214), and a hydrogen-selective membrane (140, 240) disposed in registration with the hole (144, 244).

US Patent:

59457805, Aug 31, 1999

Filed:

Jun 30, 1997

Appl. No.:

8/885392

Inventors:

Arthur J. Ingle - Chandler AZ
Charles Rowell - Tempe AZ
Babu Chalamala - Chandler AZ
Ronald O. Petersen - Phoenix AZ
Craig Amrine - Tempe AZ
Matthew Stainer - Phoenix AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J 162

US Classification:

313495

Abstract:

A field emission display (200) includes a cathode plate (202); a substrate (102) opposing the cathode plate (202); a conductive matrix (104) disposed on the substrate (102) and having via walls (103) defining a plurality of phosphor vias (105); a phosphor (106, 108, 110) disposed within each of the phosphor vias (105); and a gas-adsorption material distributed within the conductive matrix (104). A method for fabricating the field emission display (200) includes the steps of silk-screening onto the substrate (102) a screenable suspension, which is made from a glass, a metal, a gas-adsorption material, and a photo-sensitive material, to form a film; photo-patterning the film to form a phosphor via (105); depositing a phosphor material into the phosphor via (105) to form an anode plate (100); and affixing the cathode plate (202) to the anode plate (100).

US Patent:

54080886, Apr 18, 1995

Filed:

Dec 15, 1993

Appl. No.:

8/168022

Inventors:

William A. Chapman - Phoenix AZ
Charles A. Rowell - Tempe AZ

Assignee:

Litton Systems, Inc. - Woodland Hills CA

International Classification:

H01J 3150

US Classification:

250214VT

Abstract:

An improved electrostatically-focused image intensifier tube, and a night vision device having such a tube, is substantially free of the spurious bright spots generally known as "PC Flash". The improved image intensifier tube includes an insulator which resists emission of electrons into the interior cavity of the tube, or a structure to capture such emitted electrons before they can fall into a microchannel plate of the tube and cause the PC Flash. A method of making such an image intensifier tube is also disclosed.