LOREN THOMAS LANCASTER
Pilots at Los Reyes Cir, Colorado Springs, CO

License number
Colorado A2700034
Issued Date
May 2016
Expiration Date
May 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
6966 Los Reyes Cir, Colorado Springs, CO 80918

Professional information

Loren Lancaster Photo 1

Semiconductor Non-Volatile Latch Device Including Non-Volatile Elements

US Patent:
6363011, Mar 26, 2002
Filed:
Jul 25, 2000
Appl. No.:
09/626267
Inventors:
Ryan T. Hirose - Colorado Springs CO
Loren T. Lancaster - Colorado Springs CO
Assignee:
Cypress Semiconductor Corporation - San Jose CA
International Classification:
G11C 1604
US Classification:
36518507, 36518508, 36518905
Abstract:
A bistable non-volatile latch circuit adapted to store a non-volatile binary data state during a program operation, and to assume one of two stable states in response to a recall operation that correspond uniquely to the data state has first and second circuit sections. The first circuit section has a first non-volatile current path with means to set the impedance of the first current path in a non-volatile manner. A first end of the first current path is connected to provide a logic output signal, which represents a binary logic state depending on a voltage applied to the a first signal input node. The set/reset signal to the first current path varies between at least the power source voltage and a program voltage that is negative with respect to the power source voltage. A second circuit section generates an output voltage on a second output node that represents a binary logic state opposite from the output states of the first circuit section. Means are provided for connecting the first circuit section and the second circuit section into a bistable configuration.


Loren Lancaster Photo 2

Semiconductor Non-Volatile Memory Device Having A Nand Cell Structure

US Patent:
6614070, Sep 2, 2003
Filed:
Jul 10, 2000
Appl. No.:
09/613874
Inventors:
Ryan T. Hirose - Colorado Springs CO
Loren T. Lancaster - Colorado Springs CO
Assignee:
Cypress Semiconductor Corporation - San Jose CA
International Classification:
H01L 29788
US Classification:
257316, 257322, 257324, 257326, 365184
Abstract:
A NAND stack array ( ) is placed within a well formed on a semiconductor substrate and includes a series array of memory cell transistors ( ) whose threshold voltages can be electrically altered over a range of depletion values. When a cell within a certain NAND stack is selected for a read operation, a peripheral circuit drives selected gate word line to the well potential and drives the word lines of the other gates within the selected NAND stack to a potential at least equal in magnitude to the magnitude of the a reference voltage plus the threshold voltage of a memory cell in the programmed state.


Loren Lancaster Photo 3

Semiconductor Device Having Silicon-Rich Layer And Method Of Manufacturing Such A Device

US Patent:
6709928, Mar 23, 2004
Filed:
Jul 31, 2001
Appl. No.:
09/920378
Inventors:
Fred Jenne - Los Gatos CA
Loren Thomas Lancaster - Colorado Springs CO
Assignee:
Cypress Semiconductor Corporation - San Jose CA
International Classification:
H01L 21336
US Classification:
438264, 438261, 438591, 438775, 438778, 438257
Abstract:
A semiconductor device and method of manufacturing a semiconductor device is disclosed in which a SONOS-type dielectric may include a charge storing dielectric (206) that includes at least one charge trapping dielectric layer (212) formed within. A charge trapping dielectric layer (212) may be a silicon-rich silicon nitride layer that may trap charge that could otherwise tunnel through a charge storing dielectric (206). A method may include forming a tunneling dielectric (302), forming a first portion of a charge storing layer (304-0), forming a charge trapping layer (306), forming a second portion of a charge storing layer (304-1), and forming a top dielectric (308).


Loren Lancaster Photo 4

Integrated Circuit Timer Function Using Natural Decay Of Charge Stored In A Dielectric

US Patent:
5760644, Jun 2, 1998
Filed:
Oct 25, 1996
Appl. No.:
8/735973
Inventors:
Loren T. Lancaster - Colorado Springs CO
Ryan T. Hirose - Colorado Springs CO
Assignee:
NVX Corporation - Colorado Springs CO
International Classification:
H01L 2500
US Classification:
327566
Abstract:
A semiconductor integrated circuit to determine a passage of time that may include a time during which no electrical power is supplied to the circuit is disclosed. The circuit has a timing device that includes a memory storage dielectric material for trapping charge carriers and releasing the trapped charge carriers in a known manner over time. The timing device has an electrical parameter that is relatable to an electric field created by the trapped charge carriers. A charge injection circuit is provided for selectively injecting charge carriers into the memory storage dielectric material to create an initialized state, and a time reader circuit determines when the electrical parameter has reached a predetermined value that corresponds to a passage of a predetermined time. Preferably the timing device is an insulated gate field effect transistor in which the memory storage dielectric material is a dielectric material, such as SONOS or SNOS, between the gate and channel overlying at least the channel area.


Loren Lancaster Photo 5

Semiconductor Non-Volatile Memory Device Having An Improved Write Speed

US Patent:
6140676, Oct 31, 2000
Filed:
May 20, 1998
Appl. No.:
9/082167
Inventors:
Loren T. Lancaster - Colorado Springs CO
Assignee:
Cypress Semiconductor Corporation - San Jose CA
International Classification:
H01L 2978, H01L 3300
US Classification:
257315
Abstract:
A non-volatile memory IGFET device has a gate dielectric stack that is dielectrically equivalent to a layer of silicon dioxide having a thickness of 170. ANG. or less. Above the dielectric stack is a polycrystalline silicon gate that is doped in an opposite manner to that of the source and drain regions of the transistor. By using a gate doping that is opposite to that of the IGFET source and drain regions, the poly depletion layer that can occur during programming in modern and advanced memory devices is eliminated according to this invention. The device of this invention forms an accumulation layer in the poly rather than a depletion layer. This difference not only greatly improves the program speed, but allows for selecting the gate doping at levels as low as 10. sup. 11 /cm. sup. 3, or less, without significantly compromising the program speed. Further, since the majority of the applied voltage in a device according to this invention is dropped over the gate dielectric, rather than shared between the gate dielectric and a depletion layer in the gate poly, the device of this invention can be scaled in gate dielectric thickness without significantly compromising the program speed.


Loren Lancaster Photo 6

Semiconductor Non-Volatile Device Including Embedded Non-Volatile Elements

US Patent:
6122191, Sep 19, 2000
Filed:
Aug 19, 1998
Appl. No.:
9/136694
Inventors:
Ryan T. Hirose - Colorado Springs CO
Loren T. Lancaster - Colorado Springs CO
Assignee:
Cypress Semiconductor Corporation - San Jose CA
International Classification:
G11C 1604
US Classification:
36518501
Abstract:
A bistable non-volatile latch circuit adapted to store a non-volatile binary data state during a program operation, and to assume one of two stable states in response to a recall operation that correspond uniquely to the data state has first and second circuit sections. The first circuit section has a first non-volatile current path with means to set the impedance of the first current path in a non-volatile manner. A first end of the first current path is connected to provide a logic output signal, which represents a binary logic state depending on a voltage applied to the a first signal input node. The set/reset signal to the first current path varies between at least the power source voltage and a program voltage that is negative with respect to the power source voltage. A second circuit section generates an output voltage on a second output node that represents a binary logic state opposite from the output states of the first circuit section. Means are provided for connecting the first circuit section and the second circuit section into a bistable configuration.


Loren Lancaster Photo 7

Flash Memory System, And Methods Of Constructing And Utilizing Same

US Patent:
5656837, Aug 12, 1997
Filed:
Apr 16, 1996
Appl. No.:
8/633857
Inventors:
Loren T. Lancaster - Colorado Springs CO
Ryan T. Hirose - Colorado Springs CO
Assignee:
NVX Corporation - Colorado Springs CO
International Classification:
H01L 27115
US Classification:
257314
Abstract:
A transistor structure (10), memory array (150) using the transistor structure, and method for making it are presented. The memory array (150), on a semiconductor substrate (152), contains a plurality of substantially parallel bit lines (154,155). A plurality of channel regions in the substrate (152) are bounded in one direction by a sets of bit line pairs (154,155). A conductive field shield layer (160), over a first insulation layer (156), is patterned to provide electrical regions over the channel regions between the first alternate sets of the bit lines (154,155) to form isolation transistor structures when biased with respect to the substrate (152). The field shield layer (160) is patterned to expose the channel regions of the memory transistors (151,. . . , 151'") between second alternate sets of the bit lines (155,154). A second insulating layer (163) is formed over the field shield layer (160).


Loren Lancaster Photo 8

Field Shield Isolated Eprom

US Patent:
5510638, Apr 23, 1996
Filed:
Apr 28, 1994
Appl. No.:
8/234288
Inventors:
Loren T. Lancaster - Colorado Springs CO
Ryan T. Hirose - Colorado Springs CO
Assignee:
NVX Corporation - Colorado Springs CO
International Classification:
H01L 27115
US Classification:
257314
Abstract:
A transistor structure (10), memory array (150) using the transistor structure, and method for making it are presented. The memory array (150), on a semiconductor substrate (152), contains a plurality of substantially parallel bit lines (154,155). A plurality of channel regions in the substrate (152) are bounded in one direction by a sets of bit line pairs (154,155). A conductive field shield layer (160), over a first insulation layer (156), is patterned to provide electrical regions over the channel regions between the first alternate sets of the bit lines (154,155) to form isolation transistor structures when biased with respect to the substrate (152). The field shield layer (160) is patterned to expose the channel regions of the memory transistors (151,. . . , 151'") between second alternate sets of the bit lines (155,154). A second insulating layer (163) is formed over the field shield layer (160).


Loren Lancaster Photo 9

Semiconductor Non-Volatile Memory Device Having A Nand Cell Structure

US Patent:
6163048, Dec 19, 2000
Filed:
Apr 16, 1998
Appl. No.:
9/051700
Inventors:
Ryan T. Hirose - Colorado Springs CO
Loren T. Lancaster - Colorado Springs CO
Assignee:
Cypress Semiconductor Corporation - San Jose CA
International Classification:
H01L 29788, G11C 1604
US Classification:
257315
Abstract:
A NAND stack array (95') is placed within a well formed on a semiconductor substrate and includes a series array of memory cell transistors (10) whose threshold voltages can be electrically altered over a range of depletion values. When a cell within a certain NAND stack is selected for a read operation, a peripheral circuit drives selected gate word line to the well potential and drives the word lines of the other gates within the selected NAND stack to a potential at least equal in magnitude to the magnitude of the a reference voltage plus the threshold voltage of a memory cell in the programmed state.


Loren Lancaster Photo 10

Single Poly Memory Cell And Array

US Patent:
5789776, Aug 4, 1998
Filed:
Sep 18, 1996
Appl. No.:
8/715569
Inventors:
Loren T. Lancaster - Colorado Springs CO
Ryan T. Hirose - Colorado Springs CO
Assignee:
NVX Corporation - Colorado Springs CO
International Classification:
H01L 27108, H01L 2976, H01L 2994, H01L 31119
US Classification:
257296
Abstract:
A non-volatile memory cell array using only a single level of polysilicon and a single level of metal has programmable single transistor memory cells on a semiconductor substrate of a first conductivity type, a well of a second conductivity type in the substrate, parallel bitlines oriented in a first direction, and reference line segments oriented in the first direction. Each reference line is paired with one of each bitline. The array also has parallel word lines oriented in a second direction to form an array of intersections with the pairs of bitline/reference line pairs, and a rewriteable single transistor memory cell at each intersection point.