Patents Assigned to Intevac, Inc.
  • Patent number: 8677929
    Abstract: Disclosed are methods and apparatus for masking of substrates for deposition, and subsequent lifting of the mask with deposited material. Masking materials are utilized that can be used in high temperatures and vacuum environment. The masking material has minimal outgassing once inside a vacuum chamber and withstand the temperatures during deposition process. The mask is inkjeted over the wafers and, after deposition, removed using agitation, such as ultrasonic agitation, or using laser burn off.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: March 25, 2014
    Assignee: Intevac, Inc.
    Inventors: Alexander J. Berger, Terry Bluck, Vinay Shah, Judy Huang, Karthik Janakiraman, Chau T. Nguyen, Greg Stumbo
  • Publication number: 20130287526
    Abstract: A system for processing substrates in plasma chambers, such that all substrates transport and loading/unloading operations are performed in atmospheric environment, but processing is performed in vacuum environment. The substrates are transported throughout the system on carriers. The system's chambers are arranged linearly, such that carriers move from one chamber directly to the next. A conveyor, placed above or below the system's chambers, returns the carriers to the system's entry area after processing is completed. Loading and unloading of substrates may be performed at one side of the system, or loading can be done at the entry side and unloading at the exit side.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 31, 2013
    Applicant: Intevac, Inc.
    Inventors: Terry Bluck, Vinay Shah, Alex Riposan
  • Publication number: 20130284594
    Abstract: A narrow sputtering source and target which are designed to be installed in a series on a sputtering chamber. Each of the narrow sputtering source has length sufficient to traverse one direction of the sputtering zone, but is much narrower than the orthogonal direction of the sputtering zone. When the sputtering chamber performs a pass-by sputtering process, each of the narrow sputtering sources is sufficiently long to traverse the sputtering zone in the direction orthogonal to the substrate travel direction, but is much narrower than the sputtering zone in the direction of substrate travel. Several narrow sputtering sources are installed so as to traverse the entire sputtering zone in all directions.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 31, 2013
    Applicant: Intevac, Inc.
    Inventors: Terry Bluck, Alex Riposan
  • Publication number: 20130276978
    Abstract: An arrangement for supporting substrates during processing, having a wafer carrier with a susceptor for supporting the substrate and confining the substrate to predetermined position. An inner mask is configured for placing on top of the substrate, the inner mask having an opening pattern to mask unprocessed parts of the substrate, but expose remaining parts of the substrate for processing. An outer mask is configured for placing on top of the inner mask, the outer mask having an opening that exposes the part of the inner mask having the opening pattern, but cover the periphery of the inner mask.
    Type: Application
    Filed: April 19, 2013
    Publication date: October 24, 2013
    Applicant: Intevac, Inc.
    Inventors: Terry Bluck, Ian Latchford, Vinay Shah, Alex Riposan
  • Publication number: 20130161183
    Abstract: Disclosed is a substrate processing system which enables combined static and pass-by processing. Also, a system architecture is provided, which reduces footprint size. The system is constructed such that the substrates are processed therein vertically, and each chamber has a processing source attached to one sidewall thereof, wherein the other sidewall backs to a complementary processing chamber. The chamber system can be milled from a single block of metal, e.g., aluminum, wherein the block is milled from both sides, such that a wall remains and separates each two complementary processing chambers.
    Type: Application
    Filed: December 27, 2012
    Publication date: June 27, 2013
    Applicant: Intevac, Inc.
    Inventor: Intevac, Inc.
  • Publication number: 20130149075
    Abstract: A system for transporting substrates from an atmospheric pressure to high vacuum pressure and comprising: a rough vacuum chamber having an entry valve and an exit opening; a high vacuum chamber having an entry opening, the high vacuum chamber coupled to the rough vacuum chamber such that the exit opening and the entry opening are aligned; a valve situated between the exit opening and the entry opening; a first conveyor belt provided in the rough vacuum chamber; a second conveyor provided in the high vacuum chamber; a sensing element provided in the high vacuum chamber to enable detection of broken substrates on the second conveyor; and, a mechanism provided on the second conveyor belt enabling dumping of broken substrates onto the bottom of the high vacuum chamber.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 13, 2013
    Applicant: INTEVAC, INC.
    Inventor: INTEVAC, INC.
  • Publication number: 20130115764
    Abstract: A system for processing substrates has a vacuum enclosure and a processing chamber situated to process wafers in a processing zone inside the vacuum enclosure. Two rail assemblies are provided, one on each side of the processing zone. Two chuck arrays ride, each on one of the rail assemblies, such that each is cantilevered on one rail assemblies and support a plurality of chucks. The rail assemblies are coupled to an elevation mechanism that places the rails in upper position for processing and at lower position for returning the chuck assemblies for loading new wafers. A pickup head assembly loads wafers from a conveyor onto the chuck assemblies. The pickup head has plurality of electrostatic chucks that pick up the wafers from the front side of the wafers. Cooling channels in the processing chucks are used to create air cushion to assist in aligning the wafers when delivered by the pickup head.
    Type: Application
    Filed: November 8, 2012
    Publication date: May 9, 2013
    Applicant: INTEVAC, INC.
    Inventor: Intevac, Inc.
  • Publication number: 20130112546
    Abstract: A sputtering system having a processing chamber with an inlet port and an outlet port, and a sputtering target positioned on a wall of the processing chamber. A movable magnet arrangement is positioned behind the sputtering target and reciprocally slides behinds the target. A conveyor continuously transports substrates at a constant speed past the sputtering target, such that at any given time, several substrates face the target between the leading edge and the trailing edge. The movable magnet arrangement slides at a speed that is at least several times faster than the constant speed of the conveyor. A rotating zone is defined behind the leading edge and trailing edge of the target, wherein the magnet arrangement decelerates when it enters the rotating zone and accelerates as it reverses direction of sliding within the rotating zone.
    Type: Application
    Filed: November 2, 2012
    Publication date: May 9, 2013
    Applicant: INTEVAC, INC.
    Inventor: INTEVAC, INC.
  • Publication number: 20130105087
    Abstract: An electrostatic chuck is disclosed, which is especially suitable for fabrication of substrates at high throughput. The disclosed chuck may be used for fabricating large substrates or several smaller substrates simultaneously. For example, disclosed embodiments can be used for fabrication of multiple solar cells simultaneously, providing high throughput. An electrostatic chuck body is constructed using aluminum body having sufficient thermal mass to control temperature rise of the chuck, and anodizing the top surface of the body. A ceramic frame is provided around the chuck's body to protect it from plasma corrosion. If needed, conductive contacts are provided to apply voltage bias to the wafer. The contacts are exposed through the anodization.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 2, 2013
    Applicant: INTEVAC, INC.
    Inventor: Intevac, Inc.
  • Publication number: 20130105928
    Abstract: A structure and method of manufacture is disclosed for a backside thinned imager that incorporates a conformal, Al2O3, low thermal budget, surface passivation. This passivation approach facilitates fabrication of backside thinned, backside illuminated, silicon image sensors with thick silicon absorber layer patterned with vertical trenches that are formed by etching the exposed back surface of a backside-thinned image sensor to control photo-carrier diffusion and optical crosstalk. A method of manufacture employing conformal, Al2O3, surface passivation approach is shown to provide high quantum efficiency and low dark current while meeting the thermal budget constraints of a finished standard foundry-produced CMOS imager.
    Type: Application
    Filed: September 14, 2012
    Publication date: May 2, 2013
    Applicant: INTEVAC, INC.
    Inventors: Kenneth A. COSTELLO, Edward YIN, Michael Wayne PELCZYNSKI, Verle W. AEBI
  • Publication number: 20130109189
    Abstract: A system for plasma processing of wafers at high throughput, particularly suitable for processing solar cells. A loading station has a loading conveyor, a loading transport mechanism, and a chuck loading station accepting transportable electrostatic chucks, wherein the loading transport mechanism is configured to remove wafers from the conveyor and place them on the transportable electrostatic chucks. The transportable chuck is delivered to at least one processing chamber to perform plasma processing of wafers. An unloading station has an unloading conveyor, an unloading transport mechanism, and a chuck unloading station accepting the transportable electrostatic chucks from the processing chamber, wherein the unloading transport mechanism is configured to remove wafers from the transportable electrostatic chucks and place them on the conveyor. A chuck return module configured for transporting the transportable electrostatic chucks from the chuck unloading station to the chuck loading station.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 2, 2013
    Applicant: INTEVAC, INC.
    Inventor: Intevac, Inc.
  • Publication number: 20130098761
    Abstract: A system is provided for etching patterned media disks for hard drive. The modular system may be tailored to perform specific processes sequences so that a patterned media disk is fabricated without removing the disk from vacuum environment. In some sequence the magnetic stack is etched while in other the etch is performed prior to forming the magnetic stack. In a further sequence ion implantation is used without etching steps. For etching a movable non-contact electrode is utilized to perform sputter etch. The cathode moves to near contact distance to, but not contacting, the substrate so as to couple RF energy to the disk. The substrate is held vertically in a carrier and both sides are etched serially. That is, one side is etched in one chamber and then in the next chamber the second side is etched.
    Type: Application
    Filed: December 12, 2012
    Publication date: April 25, 2013
    Applicant: INTEVAC, INC.
    Inventor: Intevac, Inc.
  • Patent number: 8421012
    Abstract: A sensor for night vision applications is provided, wherein the sensor comprises a semiconductor absorption layer of composition that limits long wavelength response cutoff to between 1.25 to 1.4 ?m wavelength. The selection of this cutoff frequency provides improved dark current performance, thereby requiring less cooling of the sensor. Consequently, energy consumption is reduced, as the sensor does not require active cooling, so that the sensor is particularly beneficial for mobile night vision applications where battery weight is of high importance.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: April 16, 2013
    Assignee: Intevac, Inc.
    Inventor: Verle W. Aebi
  • Publication number: 20130087531
    Abstract: A plasma processing chamber having capacitive and inductive coupling of RF power. An RF power source is connected to an inductive coil and to a top electrode via a variable capacitor to control the ratio of power applied to the coil and electrode. The bottom electrode, which is part of the chuck holding the substrates, is floating, but has parasitive capacitance coupling to ground. No RF bias is applied to the chuck and/or the substrate, but the substrate is chucked using DC power. In a system utilizing the chamber, the chuck is movable and is loaded with substrates outside the chamber, enter the chamber from one side for processing, exit the chamber from an opposite side after the processing, and is unloaded in an unloading chamber. The chuck is then transported back to the loading chamber. Substrates are delivered to and removed from the system using conveyor belts.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 11, 2013
    Applicant: INTEVAC, INC.
    Inventor: Intevac, Inc.
  • Patent number: 8382965
    Abstract: Devices and methods for mounting and aligning transport rails to a processing chamber of a substrate processing system are described. An alignment feature is built-in to the transport rail and a corresponding alignment feature is added to the valves separating processing chambers. The alignment feature may be a pin-groove arrangement.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: February 26, 2013
    Assignee: Intevac, Inc.
    Inventor: Stuart Scollay
  • Patent number: 8373856
    Abstract: A spectroscopic system is described that provides at least one of focus of an excitation beam onto a sample, automatic focus of an optical system of the spectroscopic system for collecting a spectroscopic signal, and/or averaging of excitation intensity over a surface area of the sample.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: February 12, 2013
    Assignee: Intevac, Inc.
    Inventors: Keith T. Carron, Mark Watson, Shane Buller
  • Patent number: 8363378
    Abstract: Systems and methods for optimally dechucking a wafer from an electrostatic chuck are described. The force on a lift-pin mechanism is monitored and a dechuck voltage is determined based on the force. The wafer is dechucked at the determined dechuck voltage.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: January 29, 2013
    Assignee: Intevac, Inc.
    Inventors: Terry Bluck, Hizam Sahibudeen, Dennis Grimard
  • Patent number: 8354001
    Abstract: There is described a wafer processing system for thinned wafers that are easily broken during handling. The system protects against breakage during handling and provides for temperature controls during processing.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: January 15, 2013
    Assignee: Intevac, Inc.
    Inventors: Terry Bluck, Stuart Scollay, Edric Tong
  • Patent number: 8349196
    Abstract: A system is provided for etching patterned media disks for hard drive. The modular system may be tailored to perform specific processes sequences so that a patterned media disk is fabricated without removing the disk from vacuum environment. In some sequence the magnetic stack is etched while in other the etch is performed prior to forming the magnetic stack. In a further sequence ion implantation is used without etching steps. For etching a movable non-contact electrode is utilized to perform sputter etch. The cathode moves to near contact distance to, but not contacting, the substrate so as to couple RF energy to the disk. The substrate is held vertically in a carrier and both sides are etched serially. That is, one side is etched in one chamber and then in the next chamber the second side is etched.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: January 8, 2013
    Assignee: Intevac, Inc.
    Inventors: Kevin P. Fairbairn, Michael S. Barnes, Terry Bluck, Ren Xu, Charles Liu, Ralph Kerns
  • Patent number: 8206551
    Abstract: There is described a wafer processing system for thinned wafers that are easily broken during handling. The system protects against breakage during handling and provides for temperature controls during processing.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: June 26, 2012
    Assignee: Intevac, Inc.
    Inventors: Terry Bluck, Stuart Scollay, Edric Tong