Patents Assigned to Intevac, Inc.
-
Patent number: 8677929Abstract: 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: GrantFiled: December 27, 2011Date of Patent: March 25, 2014Assignee: Intevac, Inc.Inventors: Alexander J. Berger, Terry Bluck, Vinay Shah, Judy Huang, Karthik Janakiraman, Chau T. Nguyen, Greg Stumbo
-
Publication number: 20130287526Abstract: 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: ApplicationFiled: April 26, 2013Publication date: October 31, 2013Applicant: Intevac, Inc.Inventors: Terry Bluck, Vinay Shah, Alex Riposan
-
Publication number: 20130284594Abstract: 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: ApplicationFiled: April 26, 2013Publication date: October 31, 2013Applicant: Intevac, Inc.Inventors: Terry Bluck, Alex Riposan
-
Publication number: 20130276978Abstract: 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: ApplicationFiled: April 19, 2013Publication date: October 24, 2013Applicant: Intevac, Inc.Inventors: Terry Bluck, Ian Latchford, Vinay Shah, Alex Riposan
-
Publication number: 20130161183Abstract: 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: ApplicationFiled: December 27, 2012Publication date: June 27, 2013Applicant: Intevac, Inc.Inventor: Intevac, Inc.
-
Publication number: 20130149075Abstract: 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: ApplicationFiled: December 7, 2012Publication date: June 13, 2013Applicant: INTEVAC, INC.Inventor: INTEVAC, INC.
-
Publication number: 20130115764Abstract: 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: ApplicationFiled: November 8, 2012Publication date: May 9, 2013Applicant: INTEVAC, INC.Inventor: Intevac, Inc.
-
Publication number: 20130112546Abstract: 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: ApplicationFiled: November 2, 2012Publication date: May 9, 2013Applicant: INTEVAC, INC.Inventor: INTEVAC, INC.
-
Publication number: 20130105087Abstract: 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: ApplicationFiled: November 1, 2012Publication date: May 2, 2013Applicant: INTEVAC, INC.Inventor: Intevac, Inc.
-
Publication number: 20130105928Abstract: 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: ApplicationFiled: September 14, 2012Publication date: May 2, 2013Applicant: INTEVAC, INC.Inventors: Kenneth A. COSTELLO, Edward YIN, Michael Wayne PELCZYNSKI, Verle W. AEBI
-
Publication number: 20130109189Abstract: 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: ApplicationFiled: November 1, 2012Publication date: May 2, 2013Applicant: INTEVAC, INC.Inventor: Intevac, Inc.
-
Publication number: 20130098761Abstract: 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: ApplicationFiled: December 12, 2012Publication date: April 25, 2013Applicant: INTEVAC, INC.Inventor: Intevac, Inc.
-
Patent number: 8421012Abstract: 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: GrantFiled: August 31, 2010Date of Patent: April 16, 2013Assignee: Intevac, Inc.Inventor: Verle W. Aebi
-
Publication number: 20130087531Abstract: 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: ApplicationFiled: October 4, 2012Publication date: April 11, 2013Applicant: INTEVAC, INC.Inventor: Intevac, Inc.
-
Patent number: 8382965Abstract: 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: GrantFiled: October 31, 2008Date of Patent: February 26, 2013Assignee: Intevac, Inc.Inventor: Stuart Scollay
-
Patent number: 8373856Abstract: 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: GrantFiled: October 31, 2011Date of Patent: February 12, 2013Assignee: Intevac, Inc.Inventors: Keith T. Carron, Mark Watson, Shane Buller
-
Patent number: 8363378Abstract: 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: GrantFiled: February 17, 2009Date of Patent: January 29, 2013Assignee: Intevac, Inc.Inventors: Terry Bluck, Hizam Sahibudeen, Dennis Grimard
-
Patent number: 8354001Abstract: 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: GrantFiled: December 20, 2011Date of Patent: January 15, 2013Assignee: Intevac, Inc.Inventors: Terry Bluck, Stuart Scollay, Edric Tong
-
Patent number: 8349196Abstract: 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: GrantFiled: December 5, 2008Date of Patent: January 8, 2013Assignee: Intevac, Inc.Inventors: Kevin P. Fairbairn, Michael S. Barnes, Terry Bluck, Ren Xu, Charles Liu, Ralph Kerns
-
Patent number: 8206551Abstract: 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: GrantFiled: June 16, 2009Date of Patent: June 26, 2012Assignee: Intevac, Inc.Inventors: Terry Bluck, Stuart Scollay, Edric Tong