DR. CHRISTOPHER M JAMES, DMD
Dentist at Boardwalk, San Marcos, CA

License number
California DE60166205
Category
Dentist
Type
General Practice
License number
California 101281
Category
Dentist
Type
Endodontics
Address
Address 2
955 Boardwalk STE 302, San Marcos, CA 92078
3466 Camino Michelle, Carlsbad, CA 92009
Phone
(760) 510-1133
(267) 804-3372

Professional information

Christopher James Photo 1

Easily Repairable, Low Cost, High Speed Electromechanical Assembly Of Integrated Circuit Die

US Patent:
4598308, Jul 1, 1986
Filed:
Apr 2, 1984
Appl. No.:
6/596053
Inventors:
Christopher D. James - La Costa CA
Norman E. McNeal - Carlsbad CA
Assignee:
Burroughs Corporation - Detroit MI
International Classification:
H01L 2340, H01L 2350
US Classification:
357 81
Abstract:
An assembly of intercoupled integrated circuit die comprises: a substrate having a plurality of holes which extend through the substrate; each hole is of a size that is suitable to receive an integrated circuit die; a plurality of independent subassemblies are also provided; each subassembly includes an integrated circuit die and a heat sink which is attached to the back of the die and extends beyond it; each subassembly is aligned with a respective hole in the substrate such that the die lies in the hole and the heat sink extends beyond the hole and attaches to the substrate; subassemblies are interconnected by printed conductors on the substrate and discrete wires that are bonded from the front of the die to the conductors; and the die and heat sink have similar thermal expansion coefficients, while the substrate has a substantially different thermal expansion coefficient.


Christopher James Photo 2

Micromachined Relay And Method Of Forming The Relay

US Patent:
5620933, Apr 15, 1997
Filed:
May 19, 1995
Appl. No.:
8/445139
Inventors:
Christopher D. James - Carlsbad CA
Henry S. Katzenstein - Arroyo Grande CA
Assignee:
Brooktree Corporation - San Diego CA
International Classification:
H01L 21461, H01L 21465
US Classification:
216 2
Abstract:
A bridging member extending across a cavity in a semiconductor substrate (e. g. single crystal silicon) has successive layers--a masking layer, an electrically conductive layer (e. g. polysilicon) and an insulating layer (e. g. SiO. sub. 2). A first electrical contact (e. g. gold coated with ruthenium) extends on the insulating layer in a direction perpendicular to the extension of the bridging member across the cavity. A pair of bumps (e. g. gold) are on the insulating layer each between the contact and one of the cavity ends. Initially the bridging member and then the contact and the bumps are formed on the substrate and then the cavity is etched in the substrate through holes in the bridging member. A pair of second electrical contacts (e. g. gold coated with ruthenium) are on the surface of an insulating substrate (e. g.


Christopher James Photo 3

Micromachined Relay And Method Of Forming The Relay

US Patent:
5479042, Dec 26, 1995
Filed:
Feb 1, 1903
Appl. No.:
8/012055
Inventors:
Christopher D. James - Carlsbad CA
Henry S. Katzenstein - Arroyo Grande CA
Assignee:
Brooktree Corporation - San Diego CA
International Classification:
H01L 2966, H01L 2996
US Classification:
257415
Abstract:
A bridging member extending across a cavity in a semiconductor substrate (e. g. single crystal silicon) has successive layers--a masking layer, an electrically conductive layer (e. g. polysilicon) and an insulating layer (e. g. SiO. sub. 2). A first electrical contact (e. g. gold coated with ruthenium) extends on the insulating layer in a direction perpendicular to the extension of the bridging member across the cavity. A pair of bumps (e. g. gold) are on the insulating layer each between the contact and one of the cavity ends. Initially the bridging member and then the contact and the bumps are formed on the substrate and then the cavity is etched in the substrate through holes in the bridging member. A pair of second electrical contacts (e. g. gold coated with ruthenium) are on the surface of an insulating substrate (e. g.


Christopher James Photo 4

Micromachined Relay And Method Of Forming The Relay

US Patent:
5627396, May 6, 1997
Filed:
May 18, 1995
Appl. No.:
8/443456
Inventors:
Christopher D. James - Carlsbad CA
Henry S. Katzenstein - Arroyo Grande CA
Assignee:
Brooktree Corporation - San Diego CA
International Classification:
H01L 2982
US Classification:
257415
Abstract:
A bridging member extending across a cavity in a semiconductor substrate (e. g. signal crystal silicon) has successive layers--a masking layer, an electrically conductive layer (e. g. polysilicon) and an insulating layer (e. g. SiO. sub. 2). A first electrical contact (e. g. gold coated with ruthenium) extends on the insulating layer in a direction perpendicular to the extension of the bridging member across the cavity. A pair of bumps (e. g. gold) are on the insulating layer each between the contact and one of the cavity ends. Initially the bridging member and then the contact and the bumps are formed on the substrate and then the cavity is etched in the substrate through holes in the bridging member. A pair of second electrical contacts (e. g. gold coated with ruthenium) are on the surface of an insulating substrate (e. g.