Patents Issued in September 7, 2004
-
Patent number: 6787374Abstract: A sorting section can be supplied with parts from plurality of supply sources. A semiconductor device sorting system is provided with a sorting section for sorting good transistors by means of an electric performance test thereof and supply sections adapted to separate the transistor parts that are collectively supplied in a complex into transistors and supply the separated transistors to the sorting section. An appropriate one of the supply sections can be selected corresponding to the supply form of the transistor parts to be separated. A selected supply section can be switched to another depending on the supply form of the transistor parts.Type: GrantFiled: February 27, 2002Date of Patent: September 7, 2004Assignees: Hitachi, Ltd., Hitachi Tobu Semiconductor, Ltd.Inventors: Hisao Yamagata, Katsumi Oya
-
Patent number: 6787375Abstract: Within a method for electrical testing a series of microelectronic fabrication die fabricated within a microelectronic fabrication substrate, there is first electrically tested the series of microelectronic fabrication die to determine at least one sub-series of electrically unacceptable microelectronic fabrication die. Similarly, there is also determined whether the microelectronic fabrication substrate may be reworked. Finally, there is also electrically retested only the at least one sub-series of electrically unacceptable microelectronic fabrication die, and only if the microelectronic substrate may be reworked. The method provides for enhanced efficiency when electrically testing the series of microelectronic fabrication die.Type: GrantFiled: May 13, 2002Date of Patent: September 7, 2004Assignee: Taiwan Semiconductor Manufacturing Co., LtdInventors: Yung-Min Cheng, Yao-Tung Liu, Chun-Tsung Yang, Juei-Feng Hsu
-
Patent number: 6787376Abstract: A method and apparatus is provided for creating a process recipe based on a desired result. The method comprises providing at least one workpiece to a processing tool for processing, providing the desired result for the workpiece to the processing tool, and generating a recipe for processing the workpiece based on the desired result.Type: GrantFiled: May 22, 2002Date of Patent: September 7, 2004Assignee: Advanced Micro Devices, Inc.Inventors: Jason A. Grover, Mark K. Sze-To
-
Patent number: 6787377Abstract: The invention is a method of determining a set temperature profile for a method of controlling respective substrate temperatures of a plurality of groups in accordance with respective corresponding set temperature profiles, in a method of heat processing a plurality of substrates that are classified into the plurality of groups.Type: GrantFiled: January 24, 2003Date of Patent: September 7, 2004Assignee: Tokyo Electron LimitedInventors: Wenling Wang, Koichi Sakamoto, Fujio Suzuki, Moyuru Yasuhara
-
Patent number: 6787378Abstract: A method is provided that allows a simple and inexpensive apparatus to measure the uniformity of the height-directional positions of spheres or hemispheres such as bump electrodes of a semiconductor device. The degree of focus is calculated from an image of bump electrodes 11a and 11b acquired at a first focusing position F1 using an imaging system. After that, the bump electrodes 11a and 11b and the imaging system is relatively moved closer or farther, and then the degree of focus is calculated from an image acquired at a second focusing position F2. The degrees of focus at these two focusing positions F1 and F2 are compared with each other. As a result, detected are the contour lines of the horizontal cross sections of the bump electrodes 11a and 11b at the height (F1+F2)/2 of the position of equal degree of focus indicated by PQ. On the basis of the shapes and/or sizes thereof, the height-directional positions of the bump electrodes 11a and 11b are measured.Type: GrantFiled: October 8, 2003Date of Patent: September 7, 2004Assignee: NEC Machinery CorporationInventors: Akira Ishii, Jun Mitsudo
-
Patent number: 6787379Abstract: A method of detecting spatially correlated variations that may be used for detecting statistical outliers in a production lot of integrated circuits to increase the average service life of the production lot includes measuring a selected parameter of each of a plurality of electronic circuits replicated on a common surface; calculating a difference between a value of the selected parameter at a target location and a value of the selected parameter an identical relative location with respect to the target location for each of the plurality of electronic circuits to generate a distribution of differences; calculating an absolute value of the distribution of differences; and calculating an average of the absolute value of the distribution of differences to generate a representative value for the residual for the identical relative location.Type: GrantFiled: December 12, 2001Date of Patent: September 7, 2004Assignee: LSI Logic CorporationInventors: Robert Madge, Kevin Cota, Bruce Whitefield
-
Patent number: 6787380Abstract: An electrically-conductive grid placed between an LED and a photodiode prevents false triggers of the photodiode by transient electrical fields. The grid terminates the field but allows light output of the LED to pass to the photodiode.Type: GrantFiled: August 27, 2003Date of Patent: September 7, 2004Assignee: Vishay Infrared Components, Inc.Inventors: David Whitney, Anthony V. Souza
-
Patent number: 6787381Abstract: A semiconductor laser capable of emitting a plurality of laser light having different oscillation wavelengths which is formed with dielectric films having little fluctuation in reflectance at ends of a plurality of active layers and a method of production of the same, said semiconductor laser having a plurality of active layers having different compositions on a substrate and emitting in parallel a plurality of laser light having different oscillation wavelengths, wherein a front dielectric film having a predetermined thickness by which a reflectance with respect to light of a predetermined wavelength of an arithmetical mean of oscillation wavelengths becomes the extremal value is formed on an end of the laser emission side, while rear dielectric films having higher reflectances compared with the front dielectric film and having predetermined thicknesses by which reflectances with respect to light having a predetermined wavelength become the extremal values are formed on the end of the rear side, and a methodType: GrantFiled: November 7, 2003Date of Patent: September 7, 2004Assignee: Sony CorporationInventor: Kazuhiko Nemoto
-
Patent number: 6787382Abstract: A method for singulating a substrate containing semiconductor components is performed using a nest for holding the substrate, a prestage alignment base for aligning the substrate during a prestage alignment step, and a vacuum cutting base for holding the nest and the substrate during a cutting step. The prestage alignment base includes locator pins configured to engage locator openings on the substrate to align the substrate on the nest. As the cutting base does not include the locator pins, the cutting step can be performed without saw scrap collecting on the locator pins. A system for performing the method includes the nest and the prestage alignment base having the locator pins configured to engage the locator openings on the substrate. The system also includes the sawing base which includes pedestals with vacuum conduits for holding the substrate stationary on the nest for sawing.Type: GrantFiled: August 30, 2001Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventors: Jason C. Wing, Gregory M. Chapman
-
Patent number: 6787383Abstract: The light-emitting device 100 has an ITO electrode layer 8 for applying drive voltage for light emission to a light emitting layer section 24, where the light from the light emitting layer section 24 is extracted as being passed through the ITO electrode layer 8. Between the light emitting layer section 24 and the ITO electrode layer 8, an electrode contact layer 7 composed of In-containing GaAs is located so as to contact with such ITO electrode layer 8, where occupied areas and unoccupied areas for the electrode contact layer 7 are arranged in a mixed manner on the contact interface with the transparent electrode layer 8. The electrode contact layer 7 can be obtained by annealing a stack 13, which comprises a GaAs layer 7″ formed on the light emitting layer section 24 and the ITO electrode layer 8 formed so as to contact with the GaAs layer 7″, to thereby allow In to diffuse from the ITO electrode layer to the GaAs layer 7″.Type: GrantFiled: September 26, 2002Date of Patent: September 7, 2004Assignees: Shin-Etsu Hanotai Co., Ltd., Nanoteco CorporationInventors: Shunichi Ikeda, Masato Yamada, Nobuhiko Noto, Shinji Nozaki, Kazuo Uchida, Hiroshi Morisaki
-
Patent number: 6787384Abstract: A driver circuit substrate is prepared and a mirror substrate is so provided as to be placed on the driver circuit substrate. Nine mirror elements are lad out on the mirror substrate in a 3×3 matrix form. The mirror elements are prepared by a microelectromechanical system (MEMS). An insulating substrate is provided on the driver circuit substrate and a driver circuit which drives a light reflecting mirror element is provided on the insulating substrate. The driver circuit substrate is connected to the mirror substrate via a resin layer of a thermosetting adhesive or the like.Type: GrantFiled: September 3, 2003Date of Patent: September 7, 2004Assignee: NEC CorporationInventor: Toshiyuki Okumura
-
Patent number: 6787385Abstract: A method of combining group III elements with group V elements that incorporates at least nitrogen from a nitrogen halide for use in semiconductors and in particular semiconductors in photovoltaic cells.Type: GrantFiled: February 5, 2003Date of Patent: September 7, 2004Assignee: Midwest Research InstituteInventors: Greg D. Barber, Sarah R. Kurtz
-
Patent number: 6787386Abstract: The present invention relates to a pinned photodiode used in a CMOS image sensor. The pinned photodiode according to the present invention has an uneven surface for increasing an area of a PN junction of the photodiode. So, the increased PN junction area improves a light sensitivity of the photodiode. That is, the epitaxial layer, in which the photodiode is formed, has a trench or a protrusion. Also, in the pinned photodiode, since the P0 diffusion layer is directly in contact with the P-epi layer, the two P-type layers have the same potential and then it may operate in a low voltage.Type: GrantFiled: May 29, 2003Date of Patent: September 7, 2004Assignee: Hynix Semiconductor, Inc.Inventor: Sang Hoon Park
-
Patent number: 6787387Abstract: A method for fabricating an electronic device includes the steps of: preparing a cavity defining sacrificial layer, at least the upper surface of which is covered with an etch stop layer; forming at least one first opening in the etch stop layer, thereby partially exposing the surface of the cavity defining sacrificial layer; etching the cavity defining sacrificial layer through the first opening, thereby defining a provisional cavity under the etch stop layer and a supporting portion that supports the etch stop layer thereon; and etching away a portion of the etch stop layer, thereby defining at least one second opening that reaches the provisional cavity through the etch stop layer and expanding the provisional cavity into a final cavity.Type: GrantFiled: June 23, 2003Date of Patent: September 7, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kimiya Ikushima, Hiroyoshi Komobuchi, Mikiya Uchida
-
Patent number: 6787388Abstract: In a packaged integrated circuit, electrostatic discharge protection is provided by portions of a lead frame on which the integrated circuit is mounted. The lead frame includes a die paddle on which an integrated circuit die is mounted, with plastic or epoxy material encapsulating exposed surfaces of the integrated circuit die except for a sensing surface, and supporting pins or leads formed from the lead frame. Portions of the lead frame extending from the die paddle are folded around sides of the encapsulated integrated circuit die and over, or adjacent to and level with, a peripheral upper surface of the encapsulated integrated circuit die to form an electrostatic discharge ring. The lead frame portions folded around the integrated circuit package are connected to ground through a ground pin, so that charge on a human finger touching the electrostatic discharge ring is dissipated to ground before the finger contacts a sensing surface of the integrated circuit.Type: GrantFiled: September 7, 2000Date of Patent: September 7, 2004Assignee: STMicroelectronics, Inc.Inventor: Anthony M. Chiu
-
Patent number: 6787389Abstract: Provide a discrete semiconductor device, particularly a discrete semiconductor device for small signal operation with a smaller packaging area and has excellent high frequency characteristics and good heat dissipation performance, and a method for producing the same. The discrete semiconductor elements are mounted on die bond pads and wire bond pads with the packaging surface being sealed with a resin, and connecting the back faces of the die bond pads and the wire bond pads directly to a mother board.Type: GrantFiled: October 25, 2000Date of Patent: September 7, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Minoru Oohira, Kenji Ohgiyama, Teruhisa Fujihara
-
Patent number: 6787390Abstract: An electrical and thermal contact which includes an intermediate conductive layer, an insulator component, and a contact layer. The insulator component is fabricated from a thermally insulative material and may be sandwiched between the intermediate conductive layer and the contact layer. The electrical and thermal contact may be fabricated by forming a first conductive layer on a surface of the semiconductor device, depositing a dielectric layer adjacent the first layer, patterning the dielectric layer to define the insulator component, and forming a second conductive layer adjacent the insulator component and in partial contact with the first layer. The first and second layers are respectively patterned to define the intermediate conductive layer and the contact layer. The electrical and thermal contact effectively contains heat within and prevents heat from dissipating from a contacted structure, such as a phase change component that may be switched between two or more electrical states.Type: GrantFiled: December 11, 2002Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventor: Alan R. Reinberg
-
Patent number: 6787391Abstract: A bump forming apparatus which carries out a temperature control of a type different from the conventional art in forming bumps to a semiconductor wafer, and a bump formation method executed by the bump forming apparatus are provided. A bonding stage, a load and transfer device and a control device are provided. A wafer, after having bumps formed thereon, is held by the load and transfer device and arranged above the bonding stage through control by the control device, so that a temperature drop of the wafer is controlled. Accordingly, generation of troubles such as a crack because of thermal stress and the like can be prevented to even compound semiconductor wafers sensitive to a temperature change.Type: GrantFiled: December 18, 2000Date of Patent: September 7, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Makoto Imanishi, Shoriki Narita, Masahiko Ikeya, Shinji Kanayama, Takaharu Mae
-
Patent number: 6787392Abstract: A semiconductor package (101) has a die (1), a leadframe (4), a bond pad (6), an encapsulation (3) and a wire bond ball (2). The wire bond ball is formed on the bond pad by bonding one end of a bond wire (7), and remainder of the bond wire is removed. Locations (23) for attaching the wire bond ball are recorded with reference to fiducials (5) on the lead frame. The encapsulation covers the die, deposits and die attach flag (24) of the lead frame. The wire bond ball is exposed where the encapsulation is removed. The locations for making openings (17) for exposing the wire bond ball is determined by recorded coordinates when the wire bond ball is formed. Exposed wire bond ball is plated, forming a lead to electrically connect to the die.Type: GrantFiled: September 9, 2002Date of Patent: September 7, 2004Assignee: Semiconductor Components Industries, L.L.C.Inventor: Guan Keng Quah
-
Patent number: 6787393Abstract: A semiconductor package including a double-faced semiconductor chip having integrated circuitry on both sides thereof, and a method of fabricating the same is provided, wherein the semiconductor package includes the semiconductor chip; a lead-on-chip (LOC)-type substrate, having metal patterns on both sides, bonded with the first side of the semiconductor chip; first wires for connecting the first side of the semiconductor chip to the second side of the LOC-type substrate; second wires for connecting the second side of the semiconductor chip to the first side of the LOC-type substrate; a first sealing material for covering the semiconductor chip, the first wires, and the second side of the LOC-type substrate; a second sealing material for covering the semiconductor chip, the second wires, and the first side of the LOC-type substrate; and solder balls attached to the second side of the LOC-type substrate.Type: GrantFiled: February 24, 2003Date of Patent: September 7, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Ho-tae Jin, Heui-seog Kim
-
Patent number: 6787394Abstract: A method for producing integrated circuit devices comprises the steps of forming and packaging such devices at the wafer scale, including forming a plurality of chip circuits with bond pads, adhesively fixing a plate of glass to the active surface of the wafer, slicing the wafer, applying a sealant layer to the back side of the wafer, forming contact holes through the upper glass plate, metallizing the glass plate and singulating the individual chips. Use of etchable glass for the package and palladium for metallization provides an advantageous construction method.Type: GrantFiled: February 3, 2003Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventor: Warren M. Farnworth
-
Patent number: 6787395Abstract: Silicon chip having narrow pitches of Au bumps are mounted on a module substrate in such a way that while taking into consideration a difference in coefficient of thermal expansion between the silicon chip and the module substrate, a total pitch of electrode pads of the silicon chip is made narrower than a total pitch of the Au bumps, thereby preventing misregistration between the Au bumps and the electrode pads in the course of heat treatment to ensure reliable contact therebetween.Type: GrantFiled: October 15, 2002Date of Patent: September 7, 2004Assignees: Renesas Technology Corp., Hitachi Hokkai Semiconductor, Ltd.Inventors: Yoshiyuki Kado, Tsukio Funaki, Hiroshi Kikuchi, Ikuo Yoshida
-
Patent number: 6787396Abstract: A method of making a semiconductor device assembly having a lead frame and a semiconductor device configured to be attached to each other is disclosed. An adhesive is applied at room temperature through a stencil to the lead frame. The semiconductor device is urged against the adhesive to effect the attachment between the semiconductor device and the lead frame. The adhesive preferably is from about 75 percent to about 95 percent isobutyl acetal diphenol copolymer and from about 25 percent to about 5 percent, respectively, of titanium oxide.Type: GrantFiled: March 14, 2003Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventors: Ford B. Grigg, Warren M. Farnworth
-
Patent number: 6787397Abstract: An integrated circuit device with a low stress, thin film, protective overcoat having enhanced adhesion both to polymeric materials used in packaging-semiconductor devices, and within the passivating film layers, including the following sequence of materials deposited by PECVD processing: a thin film of silicon dioxide, a layer of silicon nitride, oxy-nitride or silicon carbide, and a very thin topmost layer of silicon oxide.Type: GrantFiled: April 29, 2003Date of Patent: September 7, 2004Assignee: Texas Instruments IncorporatedInventors: Leland S. Swanson, Elizabeth G. Jacobs
-
Patent number: 6787398Abstract: The present invention provides a high-frequency signal amplification device, in which insufficient isolation is compensated and which is made smaller, as well as a method for manufacturing the same. A substrate, in which a plurality of metal conductors arranged between the plurality of dielectric layers and/or at a surface of the dielectric multilayer substrate are exposed at a first region of the surface, and a metal surface that is arranged at a position lower than the plurality of metal conductors is exposed from a remaining portion of the first region not including the region on which the plurality of metal conductors are arranged, is used as a dielectric multilayer substrate. The semiconductor element is mounted in the first region such that a high-frequency signal is input into the semiconductor element via at least one of the plurality of metal conductors, and an amplified high-frequency signal is output from the semiconductor element via at least another one of the plurality of metal conductors.Type: GrantFiled: December 3, 2002Date of Patent: September 7, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuki Tateoka, Noriyuki Yoshikawa, Kunihiko Kanazawa
-
Patent number: 6787399Abstract: A conductive plastic lead frame and method of manufacturing the same, suitable for use in IC packaging. In a preferred embodiment, the lead frame is constructed of a plastic or polymer based lead frame structure with an intrinsic conductive polymer coating. In a second embodiment, the lead frame is a composite plastic or polymeric material intermixed with an intrinsic conductive polymer coating.Type: GrantFiled: February 21, 2003Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventors: Tongbi Jiang, Jerrold L. King
-
Patent number: 6787400Abstract: An electrostatic discharge protection device is formed in a substrate and contains a drain area of a first dopant concentration abutting an extended drain area having a dopant concentration lower than the first dopant concentration. Similarly, a highly doped source area abuts a lower doped source extension area. The source and drain are laterally bounded by oxide regions and covered by an insulation layer. The areas of lower doping prevent charge crowding during an electrostatic discharge event by resistively forcing current though the nearly planer bottom surface of the drain, rather than the curved drain extension. In addition, a highly doped buried layer can abut an area of a graded doping level. By adjusting the doping levels of the graded areas and the buried layers, the substrate breakdown voltage is pre-selected.Type: GrantFiled: January 16, 2003Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventors: Stephen R. Porter, Manny K. Ma, Stephen Casper, Kevin Duesman
-
Patent number: 6787401Abstract: A method of making a vertical diode is provided, the vertical dioxide having associated therewith a diode opening extending through an insulation layer and contacting an active region on a silicon wafer. A titanium silicide layer covers the interior surface of the diode opening and contacts the active region. The diode opening is initially filled with an amorphous silicon plug that is doped during deposition and subsequently recrystallized to form large grain polysilicon. The silicon plug has a top portion that is heavily doped with a first type dopant and a bottom portion that is lightly doped with a second type dopant. The top portion is bounded by the bottom portion so as not to contact the titanium silicide layer. For one embodiment of the vertical diode, a programmable resistor contacts the top portion of the silicon plug and a metal line contacts the programmable resistor.Type: GrantFiled: March 22, 2002Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventors: Fernando Gonzalez, Tyler A. Lowrey, Trung Tri Doan, Raymond A. Turi, Graham R. Wolstenholme
-
Patent number: 6787402Abstract: A double-gate vertical MOSFET transistor is described along with an associated fabrication method. The MOSFET transistor is configured with separate gates on each side of a vertical source-drain channel that is capped by an insulation layer. The fabrication process generally comprises forming a silicon-insulator stack having a silicon fin (channel) capped with insulation. The opposing ends of the silicon-insulator stack being configured with areas capable of receiving source and drain contacts. The vertical surfaces of the silicon fin are insulated prior to the formation of gate electrodes adjacent the two opposing sides of the silicon-insulator stack. By way of example, the gate electrodes are formed by depositing a thick layer of conductive gate material over the substrate and then removing the adjoining upper portion, such as by polishing. Portions of each gate electrode are configured with areas capable of receiving a gate contact.Type: GrantFiled: April 27, 2001Date of Patent: September 7, 2004Assignee: Advanced Micro Devices, Inc.Inventor: Bin Yu
-
Patent number: 6787403Abstract: A TFT memory 11 is provided with a polysilicon layer 22, wherein each region of the source 22a, the channel 22b and the drain 22c are formed on a substrate 21, and gate oxide films (insulating films) 23 and 25 are formed on the polysilicon layer 22; and a plurality of silicon particles 24 for trapping the charge of injected carriers are placed between the gate oxide films 23 and 25. Specifically, the gate oxide films comprise a first gate oxide film 23 and a second gate oxide film 25 formed on the first gate oxide film 23; the plurality of silicon particles 24 are located between the first gate oxide film 23 and the second gate oxide film 25, and the first gate oxide film 23 is formed in an extremely thin thickness.Type: GrantFiled: July 6, 2001Date of Patent: September 7, 2004Assignee: Seiko Epson CorporationInventors: Satoshi Inoue, Piero Migliorato
-
Patent number: 6787404Abstract: A method of forming a double-gated transistor comprising the following sequential steps. A substrate having an SOI structure formed thereover is provided. The SOI structure including a lower SOI oxide layer and an upper SOI silicon layer. The SOI silicon layer is patterned to form a patterned SOI silicon layer including a source region and a drain region connected by a channel portion. An encasing oxide layer is formed over the patterned SOI silicon layer to form an encased patterned SOI silicon layer. A patterned dummy layer is formed over the encased patterned SOI silicon layer. The patterned dummy layer having an opening, with exposed side walls, exposing: the channel portion of the encased patterned SOI silicon layer; and portions of the upper surface of the SOI oxide layer. Offset spacers are over the exposed side walls of the patterned dummy layer opening.Type: GrantFiled: September 17, 2003Date of Patent: September 7, 2004Assignee: Chartered Semiconductor Manufacturing Ltd.Inventors: Yong Meng Lee, Da Jin, David Vigar
-
Patent number: 6787405Abstract: A method of forming a liquid crystal display device with a pixel TFT, a bottom electrode of pixel capacitor CL, and a storage capacitor Cs in a pixel region, and an n-type TFT and a p-type TFT in a driving circuit region is disclosed. Firstly, a transparent conductive oxide layer, a metal layer and an n-type heavy doped silicon layer are sequentially formed on a glass substrate. Thereafter, a patterning step is performed to define some predefined regions for above devices. After an active layer and a gate oxide layer are formed in order on all patterned surfaces, another patterning step is done to form a first, a second, and a third preserved region, respectively, for a LDD region of the n type TFT, source/drain regions for the p type TFT and a LDD region for pixel TFT and Cs. Afterward, gate electrodes are formed for aforementioned TFT and an upper electrode for Cs. Subsequently, a blanket nLDD implant is performed.Type: GrantFiled: April 15, 2003Date of Patent: September 7, 2004Assignee: Toppoly Optoelectronics Corp.Inventor: Hsin-Ming Chen
-
Patent number: 6787406Abstract: A method facilitates the doping of fins of a semiconductor device that includes a substrate. The method includes forming fin structures on the substrate, where each of the fin structures includes a cap formed on a fin. The method further includes performing a first tilt angle implant process to dope a first one of the fins with n-type impurities and performing a second tilt angle implant process to dope a second one of the fins with p-type impurities.Type: GrantFiled: August 12, 2003Date of Patent: September 7, 2004Assignee: Advanced Micro Devices, Inc.Inventors: Wiley Eugene Hill, Shibly S. Ahmed, Haihong Wang, Bin Yu
-
Patent number: 6787407Abstract: The present invention relates to a method of manufacturing a semiconductor device having an excellent gettering effect. In this method, when phosphorus is added to a poly-Si film, which has been crystallized by the addition of a metal, to subject the resultant poly-Si film to the heat treatment to carry out gettering therefor, the device is performed for the shape of the island-like insulating film on the poly-Si film which is employed when implanting phosphorus. Thereby, the area of the boundary surface between the region to which phosphorus has been added and the region to which no phosphorus has been added is increased to enhance gettering efficiency.Type: GrantFiled: January 3, 2003Date of Patent: September 7, 2004Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Osamu Nakamura, Manabu Katsumura, Shunpei Yamazaki
-
Patent number: 6787408Abstract: A method for forming an electrical insulating layer on bit lines of the flash memory is disclosed. A conductive layer, a mask layer and a cap layer are sequentially formed on a semiconductor substrate and then are etched to form a plurality of spacing. Afterwards, a dielectric layer is formed on the semiconductor substrate and a planarized layer is then formed on the dielectric layer. The planarized layer and the dielectric layer are etched sequentially wherein the etching rate of the planarized layer is less than that of the dielectric layer. Next, the dielectric layer is etched to remove a portion of the dielectric layer wherein the etching rate of the dielectric layer is higher than that of the cap layer, and thus a spacing dielectric layer is formed on the spacing. Thereafter, the cap layer is stripped wherein the etching rate of the dielectric layer is less than that of the mask layer so that the spacing dielectric layer has a round top and slant sides.Type: GrantFiled: August 16, 2001Date of Patent: September 7, 2004Assignee: Macronix International Co., Ltd.Inventors: Chien-Wei Chen, Jiun-Ren Lai
-
Patent number: 6787409Abstract: A method and structure to form shallow trench isolation regions without trench oxide grooving is provided. In particular, a method includes a two-step oxide process in which an oxide liner lines the inside surface of a trench and the trench is filled with a bulk oxide layer, preferably using a high density plasma chemical vapor deposition (HDP-CVD) process. The oxide liner and the bulk oxide layer are formed to have similar etch rates. Thus, when etching the oxide liner and the bulk oxide layer between stack structures, a common dielectric top surface is formed that is substantially planar and without grooves.Type: GrantFiled: November 26, 2002Date of Patent: September 7, 2004Assignee: Mosel Vitelic, Inc.Inventors: Hua Ji, Dong Jun Kim, Jin-Ho Kim, Chuck Jang
-
Patent number: 6787410Abstract: A semiconductor device with dynamic threshold transistors includes a complex element isolation region composed of a shallow element isolation region made of shallow trench isolation and deep element isolation regions provided on both sides of the shallow element isolation region. Since the shallow element isolation region is made of the shallow trench isolation, Bird's beak in the shallow element isolation region is small. This prevents off leakage failure due to stress caused by the bird's beak. The deep element isolation region has an approximately constant width which allows the complex element isolation region to be wide.Type: GrantFiled: December 19, 2002Date of Patent: September 7, 2004Assignee: Sharp Kabushiki KaishaInventors: Hiroshi Iwata, Akihide Shibata, Seizo Kakimoto
-
Patent number: 6787411Abstract: Disclosed are a gain cell structure capable of making a memory cell compact in size and a method of manufacturing the same at low cost. A memory cell is constituted of a reading MIS transistor and a writing MIS transistor. The reading MIS transistor has a pair of n+ type semiconductor regions (source region and drain region) formed on a main surface of a semiconductor substrate and a first gate electrode formed on a path of the n+ type semiconductor regions 13 via a first gate insulating film. The writing MIS transistor is arranged on the reading MIS transistor and has a layered structure made by laminating a lower semiconductor layer (source region), an intermediate semiconductor layer (channel forming region), and an upper semiconductor layer (drain region) in this order. The writing MIS transistor has a vertical structure in which a second gate electrode is arranged on both sidewalls of the layered structure via a second gate insulating film.Type: GrantFiled: December 30, 2002Date of Patent: September 7, 2004Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.Inventors: Teruaki Kisu, Kazuo Nakazato, Masahito Takahashi
-
Patent number: 6787412Abstract: It is disclosed a dielectric element comprising a lower electrode, a dielectric layer, and an upper electrode which are provided on a substrate, in which at least one of the electrodes is a Pt layer, a Ru layer is used as a base layer for the Pt layer. In the fabrication of the dielectric element, the Pt layer is formed by electroplating, a photoresist pattern is used as a plating mask, and an Ru layer is formed as a seed layer. The present invention makes it possible to provide a dielectric element using Pt as an electrode material, that is capable of easily forming a Pt electrode having excellent electrical characteristics without generating voids or seams, that is capable of forming a fine pattern, and that does not occur contamination in a processing chamber, and a method for fabricating a dielectric element of having the characteristics mentioned above.Type: GrantFiled: June 11, 2003Date of Patent: September 7, 2004Assignee: Tokyo Ohka Kogyo Co., Ltd.Inventors: Akira Hashimoto, Yoshimi Sato, Atsushi Kawakami, Hideya Kobari, Tetsuya Nakajima
-
Patent number: 6787413Abstract: Embodiments in accordance with the present invention provide alternative materials, and methods of forming such materials, that are effective as dielectric layers. Such embodiments include forming metal-containing dielectric layers over a silicon-containing substrate where a metal-containing layer is first formed and that treated to form a dielectric layer. Dielectric layers formed by methods of the present invention have a dielectric constant greater than that of silicon dioxide, and can have an equivalent oxide thickness of less than 2 nanometers. Such dielectric layers are useful in the forming of a variety of semiconductor devices such as transistors, capacitors and the like where such devices and integrated circuits formed from such devices are encompassed by embodiments in accordance with the present invention.Type: GrantFiled: June 17, 2002Date of Patent: September 7, 2004Assignee: Micron Technology, Inc.Inventors: Kie Y. Ahn, Leonard Forbes
-
Patent number: 6787414Abstract: Disclosed is a capacitor for semiconductor device with a dielectric layer having low leakage current and high dielectric constant. The capacitor includes: a lower electrode; a dielectric layer formed on the lower electrode; and an upper electrode formed on the dielectric layer, wherein the dielectric layer is a TiON layer.Type: GrantFiled: January 2, 2003Date of Patent: September 7, 2004Assignee: Hyundai Electronics IndustriesInventor: Kee Jeung Lee
-
Patent number: 6787415Abstract: Nonvolatile memory wordlines (160) are formed as sidewall spacers on sidewalls of row structures (280). Each row structure may contain floating and control gates (120, 140), or some other elements. Pedestals (340) are formed adjacent to the row structures before the conductive layer (160) for the wordlines is deposited. The pedestals are formed in the area of the contact openings (330.1) that will be etched in an overlying dielectric (310) to form contacts to the wordlines. The pedestals raise the top surface of the wordline layer near the contact openings, so the contact opening etch can be made shorter. The pedestals also increase the minimum thickness of the wordline layer near the contact openings, so the loss of the wordline layer during the etch of the contact openings becomes less critical, and the photolithographic tolerances required for patterning the contact openings can be relaxed. The pedestals can be dummy structures (they may have no electrical functionality).Type: GrantFiled: March 28, 2003Date of Patent: September 7, 2004Assignee: Mosel Vitelic, Inc.Inventors: Mei-Hua Chung, Ching-Hwa Chen, Vei-Han Chan
-
Patent number: 6787416Abstract: The present invention includes devices and methods to form non-volatile memory cells and peripheral devices, with reduced damage to the electron trapping layer and, optionally, reduced thermal exposure during CMOS processing. Particular aspects of the present invention are described in the claims, specification and drawings.Type: GrantFiled: September 24, 2002Date of Patent: September 7, 2004Assignee: Macronix International Co., Ltd.Inventors: Tung-Cheng Kuo, Chien-Hung Liu, Shyi-Shuh Pan, Shou-Wei Hung
-
Patent number: 6787417Abstract: A method of fabricating a semiconductor device in accordance with the present invention relates to a method of fabricating a semiconductor device including a memory region and a logic circuit region having a peripheral circuit, the method including the steps of: patterning a predetermined region formed of a stopper layer and a first conductive layer within the memory region, without patterning the logic circuit region; forming control gates in the form of side walls over both side surfaces of the first conductive layer within at least the memory region, with an ONO film interposed in between; forming first side wall dielectric layers on upper portions of the control gates; forming a gate electrode for a MOS transistor by patterning the first conductive layer within the logic circuit region; and forming a second side wall dielectric layer over the gate electrode and the side surfaces of the control gates and the first side wall dielectric layers.Type: GrantFiled: July 9, 2003Date of Patent: September 7, 2004Assignee: Seiko Epson CorporationInventor: Susumu Inoue
-
Patent number: 6787418Abstract: A method of making the selection gate in a split-gate flash EEPROM cell forms a selection gate on a trench sidewall of a semiconductor substrate to minimize the sidewise dimension of the selection gate and to maintain the channel length. The disclosed method includes the steps of: forming a trench on a semiconductor substrate on one side of a suspending gate structure; forming an inter polysilicon dielectric layer on the sidewall of the suspending gate structure and the trench; and forming a polysilicon spacer on the inter polysilicon dielectric layer as the selection gate. Such a split-gate flash EEPROM cell can produce ballistic hot electrons, improving the data writing efficiency and lowering the writing voltage.Type: GrantFiled: January 31, 2003Date of Patent: September 7, 2004Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Wen-Ting Chu, Jack Yeh, Chrong-Jung Lin
-
Patent number: 6787419Abstract: A wafer has a substrate defined with a first region and a second region. An ONO layer, a first silicon layer, and a silicon nitride layer are formed on the substrate in sequence. Then the ONO layer, the first silicon layer, and the silicon nitride layer disposed on the second region are removed. At least one gate oxide layer is formed on the second region and a second silicon layer is deposited on the wafer. After that, a photo-etching process is performed to remove the second silicon layer and the silicon nitride layer on the first region. At least a third silicon layer is formed on the wafer. Photo-etching processes and a plurality of ion implantation processes are then performed to form a gate, a drain, and a source of each MOS transistor on the substrate.Type: GrantFiled: January 14, 2003Date of Patent: September 7, 2004Assignee: eMemory Technology Inc.Inventors: Chung-Yi Chen, Jih-Wen Chou, Chih-Hsun Chu
-
Patent number: 6787420Abstract: This invention clarifies the effects of parameters and enables the mass production of a super-junction semiconductor device, which has a drift layer composed of a parallel pn layer that conducts electricity in the ON state and is depleted in the OFF state. The quantity of impurities in n drift regions is within the range between 100% and 150% or between 110% and 150% of the quantity of impurities in p partition regions. The impurity density of either one of the n drift regions and the p partition regions is within the range between 92% and 108% of the impurity density of the other regions. In addition, the width of either one of the n drift regions and the p partition regions is within the range between 94% and 106% of the width of the other regions.Type: GrantFiled: July 16, 2001Date of Patent: September 7, 2004Assignee: Fuji Electric Co., Ltd.Inventors: Yasushi Miyasaka, Tatsuhiko Fujihira, Yasuhiko Ohnishi, Katsunori Ueno, Susumu Iwamoto
-
Patent number: 6787421Abstract: A semiconductor device (10) having two different gate dielectric thicknesses is formed using a single high-k dielectric layer, preferably a metal oxide. A thicker first gate dielectric (16) is formed in a region of the device for higher voltage requirements, e.g. an I/O region (24). A thinner second gate dielectric (20) is formed in a region of the device for lower voltage requirements, e.g. a core device region (22). First and second dielectrics are preferably silicon dioxide or oxynitride. A metal oxide (26) is deposited over both dielectrics, followed by deposition of a gate electrode material (28). By using a single metal oxide layer in forming the gate dielectric stack for each transistor, together with high quality silicon dioxide or oxynitride dielectric layers, problems associated with selective etching of the metal oxide may be avoided, as may problems associated with various interfaces between the metal oxide and damaged or treated surfaces.Type: GrantFiled: August 15, 2002Date of Patent: September 7, 2004Assignee: Freescale Semiconductor, Inc.Inventors: David C. Gilmer, Christopher C. Hobbs, Hsing-Huang Tseng
-
Patent number: 6787422Abstract: A new method for forming a silicon-on-insulator MOSFET while eliminating floating body effects is described. A silicon-on-insulator substrate is provided comprising a silicon semiconductor substrate underlying an oxide layer underlying a silicon layer. A first trench is etched partially through the silicon layer and not to the underlying oxide layer. Second trenches are etched fully through the silicon layer to the underlying oxide layer wherein the second trenches separate active areas of the semiconductor substrate and wherein one of the first trenches lies within each of the active areas. The first and second trenches are filled with an insulating layer. Gate electrodes and associated source and drain regions are formed in and on the silicon layer in each active area. An interlevel dielectric layer is deposited overlying the gate electrodes. First contacts are opened through the interlevel dielectric layer to the underlying source and drain regions.Type: GrantFiled: January 8, 2001Date of Patent: September 7, 2004Assignee: Chartered Semiconductor Manufacturing Ltd.Inventors: Ting Cheong Ang, Sang Yee Loong, Shyue Fong Quek, Jun Song
-
Patent number: 6787423Abstract: High-speed semiconductor devices with reduced source/drain junction capacitance and reduced junction leakage based on strain silicon technology are fabricated by extending a shallow trench isolation region under the strained silicon layer. Embodiments include anisotropically etching the trench region and subsequently isotropically etching the trench to form laterally extending regions under the strained silicon layer. Embodiments also include filling the trench with an insulating material such that an air pocket is formed in the trench.Type: GrantFiled: December 9, 2002Date of Patent: September 7, 2004Assignee: Advanced Micro Devices, Inc.Inventor: Qi Xiang