| Patent Number |
Title Of Patent |
Date Issued |
| 6731386 |
Measurement technique for ultra-thin oxides |
May 4, 2004 |
| A method of measuring the thickness of ultra-thin (e.g., <200 .ANG.) oxide formed on a semiconductor device uses a reference sample (i.e., another silicon wafer) which has been pre-processed to include a relatively thick oxide surface layer. The thickness of the reference oxide (t |
| 6545788 |
Multiple path digital wavelength stabilization |
April 8, 2003 |
| A method and apparatus for stabilizing the wavelength of a laser are disclosed. The invention provides a way to stabilize a laser for applications in dense wavelength division multiplexing (DWDM) systems where frequency spacing is crucial. The invention accomplishes laser stabilizati |
| 6384947 |
Two path digital wavelength stabilization |
May 7, 2002 |
| A method and apparatus for stabilizing the wavelength of a laser are disclosed. The invention provides a way to stabilize a laser for applications in dense wavelength division multiplexing (DWDM) systems where frequency spacing is crucial. The invention accomplishes laser stabilizati |
| 6306670 |
Tool for handling a workpiece |
October 23, 2001 |
| A system for flipping a semiconductor workpiece on its thin edge for microscope inspection of a workpiece facet is disclosed. The system has a holding device attached to a handling block. The holding device picks a workpiece by one of its thin edges. The edge of the workpiece may be |
| 6290805 |
System and method for using a pick and place apparatus |
September 18, 2001 |
| A system is provided for removing large semiconductor work pieces from an adhesive film. A pick and place apparatus is provided with a collet bar with elongated sides and opposed ends. A channel extends into a cavity on a lower surface of the collet bar. The channel receives a vacuum. Th |
| 6277234 |
Method and apparatus for removing work pieces adhered to a support |
August 21, 2001 |
| A demounting apparatus is described which releases semiconductor work pieces from an adhesive support structure. The demounting apparatus includes a conduit with a pair of opposed openings. A support structure is placed over one of the openings with a work piece mounted on a lower su |
| 6277206 |
Method for unclogging solder-clogged collet using solder preform |
August 21, 2001 |
| A method for unblocking a vacuum collet channel clogged with solder includes moving a solder-clogged collet into contact with a preform of solder, and melting the solder clog and the preform into a single melted mass, cooling the melted mass to solidify it, and moving the collet away |
| 6274458 |
Method of gas cleaving a semiconductor product |
August 14, 2001 |
| A device is provided for cleaving semiconductor products or the like. The device may be formed of an inlet for receiving pressurized gas, an adjustable slot for directing the gas toward the products, and a movable flow control member. According to one aspect of the invention, the flow |
| 6272163 |
Method for fabricating high speed Fabry-Perot lasers for data communication |
August 7, 2001 |
| A method for fabricating a Fabry-Perot laser having a cavity length and facet reflectivity product tuned to cause the laser to exhibit a relaxation oscillation frequency of at least 10 GHz, wherein the laser is capable of being modulated at 10 Gb/sec at drive currents between about 20 |
| 6272157 |
Apparatus and method for calibrating a wavelength stabilized laser |
August 7, 2001 |
| A wavelength stabilized laser system includes a laser that produces a laser light having an amplitude and a wavelength that varies as a function of a temperature of the laser. A temperature control device controls the temperature of the laser. A beam splitter deflects a portion of the la |
| 6267282 |
Method and apparatus for handling laser bars |
July 31, 2001 |
| An apparatus is provided for cleaving a laser bar into semiconductor chips. The apparatus includes a supporting structure on which a member slides. The apparatus also includes a pair of film layers. The laser bar is positioned between the film layers. A chamber is sealed to the top film |
| 6263555 |
Method and apparatus for handling laser bar |
July 24, 2001 |
| A method and apparatus are provided for freeing laser bars stuck in a facet coating fixture. A roller device is provided that rolls into a facet coating fixture channel and applies a downward force to a stuck laser bar. The roller device provides an uncomplicated and reliable system for |
| 6249955 |
Laser bar transport method |
June 26, 2001 |
| A coating fixture adapted to extricate a jammed connector web is described. The coating fixture includes a pair of vertical supports. Each support has a first portion spaced apart from a second portion. Springs are placed between the first and second portions to allow movement of the fir |
| 6249627 |
Arrangement for self-aligning optical fibers to an array of surface emitting lasers |
June 19, 2001 |
| An arrangement for providing attachment and alignment between an array of surface emitting lasers and an array of optical fibers utilizes a first substrate for supporting the laser array and a second substrate for supporting the fibers. The second substrate is formed to including a p |
| 6248604 |
Method for design and development of a semiconductor laser device |
June 19, 2001 |
| A method for testing semiconductor laser devices is described. The method includes testing a monolithically integrated semiconductor laser device via electrical contact testing and/or far field testing. These tests will provide the total performance of the entire device. Further, the met |
| 6243403 |
Method and apparatus for integrated optical wavelength stabilization |
June 5, 2001 |
| A wavelength-stabilized laser system includes a laser that produces a laser light. The laser light has an amplitude and a wavelength that varies with the temperature of the laser and/or a bias signal provided to the laser. A temperature control device controls the temperature of the lase |
| 6205994 |
Scriber adapter plate |
March 27, 2001 |
| A scribing machine adapter plate is configured to receive and couple a hoop assembly to a chuck on a scribing machine. The adapter plate includes an upper surface and an inner annular vacuum groove and an outer annular vacuum groove formed in the upper surface. A third vacuum groove exte |
| 6168963 |
System for adhering parts |
January 2, 2001 |
| A system for adhering a plurality of parts to a support film is provided. The parts are positioned between a support base with a heater and a cover membrane. The cover membrane is located beneath a sealed chamber. The chamber has an inlet through which gas is input. A downward force caus |
| 6164454 |
Apparatus and method for storing semiconductor objects |
December 26, 2000 |
| A storage container for semiconductor objects is disclosed. The invention has a mounting structure having an inner frame, a temperature sensitive adherent film and an outer frame. Semiconductor objects are placed on the temperature sensitive adherent and covered. The cover does not touch |
| 6142853 |
Method and apparatus for holding laser wafers during a fabrication process to minimize breakage |
November 7, 2000 |
| A method and apparatus utilizing a thermal release mounting material to adhere a laser wafer to a wafer support during a semiconductor fabrication process is provided. A first surface of the mounting material contains an adhesive and is adhered to a wafer support. The wafer support conta |
| 6137305 |
Method and apparatus for testing laser bars |
October 24, 2000 |
| A method and apparatus are disclosed for testing individual laser chips located on a laser bar containing a plurality of chips. Laser bars are transported widthwise on a moving plastic film sheet, which is passed over an elongated pedestal which is aligned with the film sheet. The pedest |
| 6131263 |
Method and apparatus for releasing laser bars after facet coating |
October 17, 2000 |
| A slot is formed behind each face of a stackable laser bar spacer of the type having a laser bar supporting face and a lower face for contacting a laser bar therebelow, each slot being generally parallel to the face in front of it and being located near an edge thereof. This produces a t |
| 6125530 |
Method and apparatus for handling laser bar |
October 3, 2000 |
| A system is provided for freeing laser bars stuck in a facet coating fixture. A roller device is provided that rolls into a facet coating fixture channel and applies a downward force to a stuck laser bar. The roller device and coating fixture combination provide an uncomplicated and |
| 6109861 |
Apparatus and method for rotating semiconductor objects |
August 29, 2000 |
| A device and method for the automated rotating of semiconductor objects during the fabrication process is disclosed. The device uses a slotted base fixture with a channel, lifting members with ducts, and a vacuum. Semiconductor objects are rotated from a vertical position to a substa |
| 6102267 |
Method and apparatus for non-contact pulsating jet cleaving of a semiconductor material |
August 15, 2000 |
| An apparatus and a method for non-contact cleaving a brittle, non-metallic solid material, such as semiconductor material, glass, quartz, ceramic or like material. A pulsating gas jet directs a jet of gas toward a support structure formed of a non-compliant material. The semiconductor ma |
| 6088212 |
Apparatus and method for minimizing electrostatic discharge damage to semiconductor objects |
July 11, 2000 |
| An apparatus and method for minimizing electrostatic discharge damage to semiconductor objects utilizes an ionized air stream to reduce electrostatic and triboelectric potential build up in and surrounding semiconductor storage containers. The ionized air stream is continuously direc |
| 6074934 |
Apparatus for cleaving laser bars |
June 13, 2000 |
| A method and apparatus are provided for automated cleaving of semiconductor laser bars into laser devices. The structures to be cleaved are sandwiched between two sheets of plastic film and, while supported on a stabilizing surface, are transported between the sheets in a direction perpe |
| 6045321 |
Method and apparatus for transporting laser bars |
April 4, 2000 |
| A method of transporting a laser bar, such as from a facet coat holding fixture, and an apparatus for implementing the same. A vacuum collet is automatically positioned at a predetermined position vertically and horizontally offset with respect to a facet of the laser bar. A vacuum is |
| 6039833 |
Method and apparatus for component pickup |
March 21, 2000 |
| A method and apparatus for removing a component retained to a film carrier by an adhesive bonding force exerted on the component by the film carrier. The method includes the steps of supporting a section of the film carrier lying beneath the component; pulling a portion of the supported |
| 6037006 |
Method and fixture for laser bar facet coating |
March 14, 2000 |
| A method and fixture for laser bar facet coating are disclosed. A holder for securing devices having surfaces for coating includes first and second channels. A plurality of web slats are received in the channels. The web slats have first and second ends and first and second device engagi |
| 6036196 |
Collet arrangement for integrated circuit structures |
March 14, 2000 |
| The conforming, tungsten carbide collet utilized for odd shaped integrated circuit structures is replaced by a plurality of individual collects of the type utilized for integrated circuits. These are typically made of polymide, which is substantially softer than tungsten carbide. In a |
| 6029427 |
Method and apparatus for handling semiconductor chips |
February 29, 2000 |
| An apparatus and a method for receiving and transporting semiconductor chips. The chips are placed in pockets on a top surface of a first carrier. A similar carrier has an adhesive sheet placed on its top surface, and it is inverted and placed on the first carrier. A vacuum is pulled |
| 6026557 |
Method for laser bar facet coating |
February 22, 2000 |
| Apparatus and method for retaining a laser bar during a facet coating operation and releasing the laser bar subsequent to the operation. The apparatus includes a pair of opposing spacers that hold the laser bar when compressed, each spacer including a compliant spring on an inner portion |
| 6017804 |
Method and apparatus for cleaving semiconductor material |
January 25, 2000 |
| The invention disclosed is a method and apparatus for cleaving semiconductor material without physical contact. Tick marks are formed in a major surface of the material where cleaving is desired. A fulcrum member is moved with respect to the material until a tick mark is in alignment |
| 5938211 |
Alignment ledge for automatic and repeatable theta registration of laser bars |
August 17, 1999 |
| A system for positioning an article at a predetermined angular orientation with respect to a vacuum collet comprising a vacuum collet having an article pickup surface; and an alignment ledge overhanging the pickup surface, wherein the alignment ledge is at a predetermined angular ori |
| 5911830 |
Method and fixture for laser bar facet coating |
June 15, 1999 |
| A method and fixture for laser bar facet coating are disclosed. A holder for securing devices having surfaces for coating includes first and second channels. A plurality of web slats are received in the channels. The web slats have first and second ends and first and second device engagi |
| 5899730 |
Method of handling semiconductor wafers, bars and chips |
May 4, 1999 |
| The invention is a method for handling material which may be in the form of semiconductor wafers, bars, and/or chips. The material is mounted to a flexible film which is heated so as to result in an adhesion strength sufficient to hold the material in place, but low enough so that the |
| 5876179 |
Vacuum-controlled collet for manipulation of semiconductor parts |
March 2, 1999 |
| A vacuum collet for handling semiconductor piece parts is formed to include a plurality of separate vacuum ports, disposed in proximity to one another. By selectively turning the vacuum ports "on" and "off", with only one vacuum port turned "on" at a time, a semiconductor chip may be |
| 4044275 |
Display panel having improved mercury assembly |
August 23, 1977 |
| The panel comprises a gas-filled envelope formed by a base plate and a face plate hermetically sealed together by a ring of fusible sealing material. The interior of the envelope includes a display area which consists of glow cathodes and one or more anodes. Adjacent to the display area |
