Patents Represented by Attorney Eugene A. Parsons

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  • Method of fabricating semiconductor devices with a passivated surface
    Patent number: 5733827
    Abstract: A method of fabricating semiconductor devices with a passivated surface includes providing first cap and etch stop layers and second cap and etch stop layers with a contact layer thereon so as to define an inter-electrode surface area. A first layer and an insulating layer, which are selectively etchable relative to each other, are deposited on the contact layer and the inter-electrode surface area. The insulating layer and the first layer are individually etched to define an electrode contact area and to expose the inter-electrode surface area. Portions of the first etch stop and cap layers remaining in the contact area are selectively removed and a metal contact is formed in the contact area in abutting engagement with the insulating layer so as to seal the inter-electrode surface area.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: March 31, 1998
    Assignee: Motorola, Inc.
    Inventors: Saied N. Tehrani, Mark Durlam, Marino J. Martinez, Jenn-Hwa Huang, Ernie Schirmann
  • Smart card with Iintegrated reader and visual image display
    Patent number: 5734154
    Abstract: A smart card (12) including a microchip (14) having information stored thereon, a virtual image display (16) and electronics (22) further connected to the virtual image display (16) for supplying image data thereto. The virtual image display (16) including compact display optics (25) housed within the smart card (12), or having at least a portion thereof positioned in an accessory component (17), for viewing information stored on the smart card (12) at a viewing aperture (18).
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: March 31, 1998
    Assignee: Motorola, Inc.
    Inventors: Karen E. Jachimowicz, Scott R. Novis
  • Blanket oxidation for contact isolation
    Patent number: 5733817
    Abstract: A method of forming isolated metal contacts during fabrication of semiconductor devices including blanket forming contact metal on a semiconductor device having a mesa structure with a first layer overlying an upper surface, a second layer overlying a lower surface and a third, substantially thinner layer overlying the sidewall therebetween. The contact metal is blanket oxidized using deep ultra violet light until the third layer is substantially completely oxidized thereby electrically isolating the first layer from the second layer.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: March 31, 1998
    Assignee: Motorola, Inc.
    Inventor: Kumar Shiralagi
  • Memory cell structure in a magnetic random access memory and a method for fabricating thereof
    Patent number: 5732016
    Abstract: A magnetic random access memory (MRAM) cell structure (10) with a portion of giant magnetoresistive (GMR) material (11), around which single or multiple word line (12) is wound, is provided. Magnetic field generated by word current (13, 14) superimposed in portion of GMR material (11) so that a total strength of magnetic field increases proportionally. The same word current is passed through the portion of GMR material (11) multiple times, thus producing equivalent word field by many times as large word current in a conventional MRAM cell.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: March 24, 1998
    Assignee: Motorola
    Inventors: Eugene Chen, Saied N. Tehrani, Herbert Goronkin
  • Passivation of electroluminescent organic devices
    Patent number: 5731661
    Abstract: A passivated organic device including a transparent layer of conductive material formed on a supporting substrate. An active organic media formed on the transparent layer and an electrode formed on the active organic media, the electrode including a thin layer of lithium formed on the active organic media and a layer of indium overlying and passivating the layer of lithium, and completing the electrode.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: March 24, 1998
    Assignee: Motorola, Inc.
    Inventors: Franky So, Song Q. Shi, Cynthia A. Gorsuch
  • Long wavelength VCSEL
    Patent number: 5732103
    Abstract: A VCSEL for emitting long wavelength light including a first mirror stack lattice matched to the surface of a substrate and including mirror pairs in a II-VI material system, an InP based active region lattice matched to a surface of the first mirror stack, and a second mirror stack lattice matched to a surface of the active region and including mirror pairs in a II-VI material system. An electrical contact is coupled to a surface of the active region and an electrical contact is positioned on another surface of the active region. In a specific embodiment the II-VI material system includes ZnCdSe/MgZnCdSe.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: March 24, 1998
    Assignee: Motorola, Inc.
    Inventors: Jamal Ramdani, Michael S. Lebby, Wenbin Jiang
  • Masking methods during semiconductor device fabrication
    Patent number: 5730798
    Abstract: A method of masking semiconductor substrates during fabrication of semiconductor devices includes positioning an oxide mask on the substrate so as to define a growth area and an unmasked portion the surface. A dense oxide layer is grown on the unmasked portion and the oxide mask is removed to expose the growth area. The substrate is introduced into a growth chamber and heated to approximately 580.degree.-600.degree. C. to desorb any native oxide in the exposed growth area. Crystalline material is selectively grown on the exposed growth area and the substrate is heated to approximately 640.degree. C. under high arsenic flux to desorb the dense oxide layer, without removing the substrate from the chamber.
    Type: Grant
    Filed: August 7, 1995
    Date of Patent: March 24, 1998
    Assignee: Motorola
    Inventor: Kumar Shiralagi
  • Flat panel display spacer structure
    Patent number: 5731660
    Abstract: A display spacer structure includes a frame with side members joined together to define a central opening. The side members have recessed portions positioned outside of, and in communication with, the central opening with getter material therein. Spaced apart grooves are formed in each of an opposed pair of the side members, and the ends of a plurality of spacers are fixed in the grooves. The spacers extend across the central opening to define a plurality of separate compartments which are in communication with the recessed portions so as to provide a continuous fluid phase throughout all the separate compartments.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: March 24, 1998
    Assignee: Motorola, Inc.
    Inventors: James E. Jaskie, Jeffery A. Whalin, Ronald O. Petersen
  • Process for manufacturing a field-emission device
    Patent number: 5727977
    Abstract: A process for manufacturing of a field emission device (100, 200) including the steps of i) providing a substrate (101, 201), ii) forming a conductive row (106, 206), ii) forming a dielectric layer (102, 202), iv) forming a resist layer (116, 216), v) forming a self-assembled monolayer (112, 212) of a self-assembled monolayer-forming molecular species on the resist layer (116, 216) so that the self-assembled monolayer (112, 212) defines an etch pattern for an emitter well (107, 207), vi) etching the resist layer (116, 216), vii) etching the dielectric layer ((102, 202), viii) forming conductive column (103, 203), and ix) forming the electron-emitter structure (105, 208) within the emitter well (107, 207).
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: March 17, 1998
    Assignee: Motorola, Inc.
    Inventors: George N. Maracas, Lawrence N. Dworsky, Herbert Goronkin, Kathleen Tobin
  • Secure smart card reader with virtual image display and pull-down options
    Patent number: 5728998
    Abstract: A smart card reader including a portable housing with a viewing aperture and a virtual image display positioned to provide an image at the aperture. A sensor in the housing constructed to have a smart card with data stored thereon positioned adjacent thereto in data sensing juxtaposition and electronics mounted in the housing and connected to the sensor for receiving sensed data and further connected to the virtual image display for supplying image data thereto.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: March 17, 1998
    Assignee: Motorola, Inc.
    Inventors: Scott R. Novis, Karen E. Jachimowicz, Dennis Barry, Jack Van Zile, George W. Rhyne
  • Spacer for a field emission display
    Patent number: 5726529
    Abstract: A spacer (200) for a field emission display (201) is disclosed. The spacer (200) includes a lower resistive region (220) and an upper insulative region (222). The spacer (200) has a member (210) which is coated with a resistive coating (212) extending between the lower end of the member and a height (h.sub.2) less than the total height (h.sub.1) of the spacer (200). An insulative coating (218) is formed on the member (210) and extends between the upper end of the resistive coating (212) and the upper end of the member (210). The resistive coating (212) has a secondary electron yield less than 2 over the lower resistive region (220) of the spacer (200). The insulative coating (218) has a secondary electron yield between 0.75-2 over the upper insulative region (222) of the spacer (200).
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: March 10, 1998
    Assignee: Motorola
    Inventors: Kenneth Dean, Ralph Cisneros, Kathleen Tobin
  • Apparatus and method for patterning a surface
    Patent number: 5725788
    Abstract: An apparatus (95) and method for patterning a surface of an article (30), the apparatus (95) including a large-area stamp (50) for forming a self-assembled monolayer (36) (SAM) of a molecular species (38) on the surface (34) of a layer (32) of resist material, which is formed on the surface of the article (30). The large-area stamp (50) includes a layer (52) of an elastomer and has, embedded within it, mechanical structures (68, 80) which stiffen the large-area stamp (50) and deform it to control the stamped patterns. The method includes the steps of: forming a layer (32) of resist material is on the surface of the article (30), utilizing the large-area stamp (50) to form the SAM (36) on the surface (34) of the layer (32) of resist material, etching the layer (32) of resist material, and thereafter etching or plating the surface of the article (30).
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: March 10, 1998
    Assignee: Motorola
    Inventors: George N. Maracas, Ronald N. Legge, Herbert Goronkin, Lawrence N. Dworsky
  • Pre-charge driver for light emitting devices and method
    Patent number: 5723950
    Abstract: A precharge driver for light emitting devices with an associated capacitance, the precharge driver including a driver coupled to a light emitting device so as to supply a substantially square wave of current to the light emitting device and a precharge circuit coupled to the driver so as to activate the driver to supply a pulse of current to the associated capacitance of the light emitting device to rapidly charge the associated capacitance at an initial portion of the square wave of current, whereby a resultant substantially square wave of current is applied to the light emitting device.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: March 3, 1998
    Assignee: Motorola
    Inventors: Chengping Wei, Franky So, Michael P. Norman
  • Passivated vertical cavity surface emitting laser
    Patent number: 5719893
    Abstract: A passivated vertical cavity surface emitting laser including a first stack of distributed Bragg reflectors disposed on the surface of a semiconductor substrate, a first cladding region disposed on the first stack, an active region disposed on the first cladding region, a second cladding region disposed on the active region, and a second stack of distributed Bragg reflectors disposed on the second cladding region. A passivation layer having an optical thickness of an integral multiple of approximately one half of the wavelength of emitted light is disposed on the vertical cavity surface emitting laser.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: February 17, 1998
    Assignee: Motorola, Inc.
    Inventors: Wenbin Jiang, Paul Claisse, Michael S. Lebby
  • Thin film transistor bio/chemical sensor
    Patent number: 5719033
    Abstract: A chemical sensor includes a thin film transistor with a gate positioned on one side. An insulating layer is positioned on the opposite side and an indicator film is positioned on the insulating layer in generally opposed relationship to the gate. Induced charge in the indicator film caused by a biological or chemical species changes the channel current in the transistor. A potential on the gate is then used to null out the resulting change in channel current. The potential used to null out the current change is an extremely sensitive measure of the induced charge.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: February 17, 1998
    Assignee: Motorola, Inc.
    Inventors: Donald E. Ackley, Chan-Long Shieh
  • Method of fabricating semiconductor devices with a passivated surface
    Patent number: 5719088
    Abstract: A method of fabricating semiconductor devices with a passivated surface includes providing a contact layer on a substrate so as to define an inter-electrode surface area. A first layer and an insulating layer, which are selectively etchable relative to each other and to the substrate and the contact layer, are deposited on the contact layer and the inter-electrode surface area. The insulating layer and the first layer are individually and selectively etched to define an electrode contact area and to expose the inter-electrode surface area. The exposed inter-electrode surface area is passivated, either subsequent to or during the etching of the first layer. A metal contact is formed in the electrode contact area in abutting engagement with the insulating layer so as to seal the inter-electrode surface area.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: February 17, 1998
    Assignee: Motorola, Inc.
    Inventors: Jenn-Hwa Huang, Mark Durlam, Marino J. Martinez, Ernie Schirmann, Saied N. Tehrani, William J. Ooms
  • Field emission device having a charge bleed-off barrier
    Patent number: 5719406
    Abstract: An improved field emission device (200, 800) includes a supporting substrate (210, 810), a conductive layer (215, 815) formed on the supporting substrate (210,810), a dielectric layer (240, 840) formed on the conductive layer (215, 815) and defining an emitter well (260, 860), a charge bleed-off barrier (290, 890)provided on the lateral surfaces (245, 845) of the emitter well, an electron emitter (270, 870) located within the emitter well (260, 860), a gate extraction electrode (250, 850) formed on the dielectric layer (240, 840) and spaced from the electron emitter (270, 870), and an anode (280, 880) spaced from the gate extraction electrode (250, 850).
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: February 17, 1998
    Assignee: Motorola, Inc.
    Inventors: Ralph Cisneros, John Song
  • Organic light emitting diode array drive apparatus
    Patent number: 5719589
    Abstract: Drive apparatus for an array of organic LEDs including first switches connectable between a current source or a rest potential, second switches connectable to a power source, an array of LEDs with each LED having a first contact connected to one of the first switches and a second contact connected to one of the second switches, and control apparatus connecting selected switches of the first switches to the current source while retaining all remaining switches of the first switches connected to the rest potential, and periodically connecting selected switches of the second switches, one at a time, to the power source to generate a desired image on the array.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: February 17, 1998
    Assignee: Motorola, Inc.
    Inventors: Michael P. Norman, George W. Rhyne, Warren L. Williamson
  • Hybrid mirror structure for a visible emitting VCSEL
    Patent number: 5719892
    Abstract: A hybrid mirror structure for a visible emitting VCSEL including a first distributed Bragg reflector disposed on a substrate and including first pairs of alternating layers including an oxidized aluminum material and second pairs of alternating layers. A first cladding region disposed on the first distributed Bragg reflector, an active region disposed on the first cladding region, and a second cladding region disposed on the active region, and a second distributed Bragg reflector disposed on the second cladding region. In the first distributed Bragg reflector, each pair of alternating layers includes a layer containing oxidized aluminum. Alternate layers contain AlAs which is oxidized to decrease the index of refraction to a range of approximately 1.3 to 1.7.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: February 17, 1998
    Assignee: Motorola, Inc.
    Inventors: Wenbin Jiang, Philip Kiely, Michael S. Lebby
  • Portable electronic package for a visual display
    Patent number: D392945
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: March 31, 1998
    Assignee: Motorola, Inc.
    Inventors: Dennis J Barry, George R. Kelly, Karen E. Jachimowicz