Daniel L. Baseman - Minneapolis MN, US Lonny L. Berg - Elk River MN, US Romney R. Katti - Maple Grove MN, US Daniel S. Reed - Maple Plain MN, US Gordon A. Shaw - Plymouth MN, US Wei D. Z. Zou - Minnetonka MN, US
In a method of fabricating a giant magnetoresistive (GMR) device a plurality of magnetoresistive device layers is deposited on a first silicon nitride layer formed on a silicon oxide layer. An etch stop is formed on the magnetoresistive device layers, and a second layer of silicon nitride is formed on the etch stop. The magnetoresistive device layers are patterned to define a plurality of magnetic bits having sidewalls. The second silicon nitride layer is patterned to define electrical contact portions on the etch stop in each magnetic bit. The sidewalls of the magnetic bits are covered with a photoresist layer. A reactive ion etch (RIE) process is used to etch into the first silicon nitride and silicon oxide layers to expose electrical contacts. The photoresist layer and silicon nitride layers protect the magnetoresistive layers from exposure to oxygen during the etching into the silicon oxide layer.
Bit End Design For Pseudo Spin Valve (Psv) Devices
Romney R. Katti - Maple Grove MN, US Paul S. Fechner - Plymouth MN, US Gordon A. Shaw - Plymouth MN, US Daniel S. Reed - Maple Plain MN, US David W. Zou - Minnetonka MN, US
Assignee:
Honeywell International Inc. - Morristown NJ
International Classification:
G03F 7/20
US Classification:
430320, 430313, 430314, 430316, 430318
Abstract:
In a process of making a magnetoresistive memory device, a mask layout is produced by use of any suitable design tool. The mask layout is laid out in grids having a central grid forming a central section and grids forming bit end sections, and the grids of the bit end sections are rectangles. A mask is made by use of the mask layout, and the mask has stepped bit ends. The mask is used to make a magnetic storage layer having tapered bit ends, to make a magnetic sense layer having tapered bit ends, and to make a non-magnetic layer having tapered bit ends. The non-magnetic layer is between the magnetic sense layer and the magnetic storage layer.
Methods For Fabricating Giant Magnetoresistive (Gmr) Devices
Daniel L. Baseman - Minneapolis MN, US Lonny L. Berg - Elk River MN, US Romney R. Katti - Maple Grove MN, US Daniel S. Reed - Maple Plain MN, US Gordon A. Shaw - Plymouth MN, US Wei D. Z. Zou - Minnetonka MN, US
In a method of fabricating a giant magnetoresistive (GMR) device a plurality of magnetoresistive device layers is deposited on a first silicon nitride layer formed on a silicon oxide layer. An etch stop is formed on the magnetoresistive device layers, and a second layer of silicon nitride is formed on the etch stop. The magnetoresistive device layers are patterned to define a plurality of magnetic bits having sidewalls. The second silicon nitride layer is patterned to define electrical contact portions on the etch stop in each magnetic bit. The sidewalls of the magnetic bits are covered with a photoresist layer. A reactive ion etch (RIE) process is used to etch into the first silicon nitride and silicon oxide layers to expose electrical contacts. The photoresist layer and silicon nitride layers protect the magnetoresistive layers from exposure to oxygen during the etching into the silicon oxide layer.
Paul S. Fechner - Plymouth MN, US Gordon A. Shaw - Plymouth MN, US Eric E. Vogt - Maple Grove MN, US
Assignee:
Honeywell International Inc. - Morristown NJ
International Classification:
H01L 21/336
US Classification:
438296, 438221, 438427, 257E21548
Abstract:
A method of forming a body-tie. The method includes forming the body-tie during an STI scheme of an SOI process. During the STI scheme, a first trench is formed. The first trench stops before a buried oxide layer of the SOI substrate. The first trench may determine a height of body tie that is shared between at least two FETs. A second trench may also be formed within the first trench. The second trench stops in the SOI substrate. The second trench defines the location and shape of a body-tie. Once the location and shape of the body-tie are defined, an oxide is deposited above the body-tie. The deposited oxide prevents certain implants from entering the body tie. By preventing these implants, a source and a drain implant may be self-aligned to the source and drain areas without requiring the use of the photoresist mask to shield the body tie regions from the source and drain implant.
A method of forming CMOS circuitry integrated with MEMS devices includes bonding a wafer to a top surface layer having contacts formed to CMOS circuitry. A handle wafer is then removed from one of the top or bottom surfaces of the CMOS circuitry, and MEMS devices are formed in a remaining silicon layer.
Paul S. Fechner - Plymouth MN, US Gordon A. Shaw - Plymouth MN, US
Assignee:
HONEYWELL INTERNATIONAL INC. - Morristown NJ
International Classification:
H01L 21/20
US Classification:
438381
Abstract:
A resistor capacitor structure and a method of fabrication. A resistor capacitor structure provides a capacitance between at least two nodes within a microelectronic circuit. A bottom plate of the resistor capacitor structure comprises a resistance layer, which in turn provides a resistance path between an additional node within the circuit. The resistor capacitor structure may be formed on top or within interlevel dielectric layers. The resistance layer, alternatively, may be used to fill a cavity located between interlevel dielectric layers and accordingly provide a resistance path between the interlevel dielectric layers.
Radiation Hardened Field Oxide For Vlsi Sub-Micron Mos Device
Gordon A. Shaw - Plymouth MN Curtis H. Rahn - Plymouth MN Cheisan Yue - Roseville MN Todd A. Randazzo - Savage MN
Assignee:
Honeywell Inc. - Morristown NJ
International Classification:
H01L 21336 H01L 21338
US Classification:
438308
Abstract:
A process for oxidizing the silicon layer into a device-isolating field oxide having a radiation-hardened reduced bird's beak. An angled and rotated field implant prior to oxidation is used to increase the doping concentration in the edge region of the MOS transistors to compensate for boron leaching during oxidation. The field oxide is grown at a low temperature by high pressure oxidation which increases total dose hardness by making a silicon-rich oxide film.
Fabrication Of Stabilized Polysilicon Resistors For Seu Control
Michael S. Liu - Bloomington MN Gordon A. Shaw - Plymouth MN Jerry Yue - Roseville MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
H01L 2170 H01L 2700
US Classification:
437 60
Abstract:
A method for fabricating polysilicon resistors of intermediate high value for use as cross-coupling or =ingle event upset (SEU) resistors in memory cells. A thin polysilicon film is implanted with arsenic ions to produce a predetermined resistivity. The thin film is then implanted with fluorine ions to stabilize the grain boundaries and thereby the barrier height. Reducing the variation in barrier height from run to run of wafers allows the fabrication of reproducible SEU resistors.
Isbn (Books And Publications)
The Market Potential for Canadian-Registered Vessels Capable of Carrying Both Great Lakes and Ocean Cargoes
Lone Pine School Prineville OR 1950-1952, Queen Anne Elementary School Lebanon OR 1952-1953, Thomas Jefferson Middle School Eugene OR 1957-1957, Veneta Elementary School Veneta OR 1957-1958, Mohawk High School Marcola OR 1958-1962