Thinning Or Removal Of Substrate Patents (Class 438/977)
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Patent number: 8372296Abstract: Provided is a manufacturing method for a thermal head, including: bonding a flat upper substrate in a stacked state onto a flat supporting substrate including a heat-insulating concave portion open to one surface thereof so that the heat-insulating concave portion is closed (bonding step (SA2)); thinning the upper substrate bonded onto the supporting substrate by the bonding step (SA2) (plate thinning step (SA3)); measuring a thickness of the upper substrate thinned by the plate thinning step (SA3) (measurement step (SA4)); deciding a target resistance value of heating resistors based on the thickness of the upper substrate, which is measured by the measurement step (SA4) (decision step (SA5)); and forming, at positions of a surface of the upper substrate thinned by the plate thinning step (SA3), the heating resistors having the target resistance value determined by the decision step (SA5), the positions being opposed to the heat-insulating concave portion (resistor forming step (SA6)).Type: GrantFiled: August 3, 2010Date of Patent: February 12, 2013Assignee: Seiko Instruments Inc.Inventors: Noriyoshi Shoji, Norimitsu Sanbongi, Toshimitsu Morooka, Keitaro Koroishi
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Patent number: 8361822Abstract: A method for producing a light-emitting device, includes: performing, on a first substrate made of III-V group compound semiconductor, crystal growth of a laminated body including an etching easy layer contiguous to the first substrate and a light-emitting layer made of nitride semiconductor; bonding a second substrate and the laminated body; and detaching the second substrate provided with the light-emitting layer from the first substrate by, one of removing the etching easy layer by using a solution etching method, and removing the first substrate and the etching easy layer by using mechanical polishing method.Type: GrantFiled: March 16, 2012Date of Patent: January 29, 2013Assignee: Kabushiki Kaisha ToshibaInventor: Ryo Saeki
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Patent number: 8357588Abstract: A workpiece machining method includes attaching a workpiece to a workpiece support with the aid of joining means. The workpiece and the workpiece support are joined to one another by an annular joining means. The composite produced is machined. The machined workpiece is separated from the workpiece support.Type: GrantFiled: February 22, 2011Date of Patent: January 22, 2013Assignee: Infineon Technologies AGInventors: Stephen Bradl, Walther Grommes, Werner Kröninger, Michael Melzl, Josef Schwaiger, Thilo Stache
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Patent number: 8314018Abstract: A first embrittlement layer is formed by doping a first single-crystal semiconductor substrate with a first ion; a second embrittlement layer is formed by doping a second single-crystal semiconductor substrate with a second ion; the first and second single-crystal semiconductor substrates are bonded to each other; the first single-crystal semiconductor film is formed over the second single-crystal semiconductor substrate by a first heat treatment; an insulating substrate is bonded over the first single-crystal semiconductor film; and the first and second single-crystal semiconductor films are formed over the insulating substrate by a second heat treatment. A dose of the first ion is higher than that of the second ion and a temperature of the first heat treatment is lower than that of the second heat treatment.Type: GrantFiled: October 8, 2010Date of Patent: November 20, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Akihisa Shimomura, Naoki Okuno, Masaki Koyama, Yasuhiro Jinbo
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Patent number: 8309403Abstract: A method for encapsulating electronic components, including the steps of: forming, in a first surface of a semiconductor wafer, electronic components; forming, on the first surface, an interconnection stack including conductive tracks and vias separated by an insulating material; forming first and second bonding pads on the interconnection stack; thinning down the wafer, except at least on its contour; filling the thinned-down region with a first resin layer; arranging at least one first chip on the first bonding pads and forming solder bumps on the second bonding pads; depositing a second resin layer covering the first chips and partially covering the solder bumps; bonding an adhesive strip on the first resin layer; and scribing the structure into individual chips.Type: GrantFiled: November 16, 2010Date of Patent: November 13, 2012Assignee: STMicroelectronics (Tours) SASInventors: Marc Feron, Vincent Jarry, Laurent Barreau
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Patent number: 8304316Abstract: In a power semiconductor device and a method of forming a power semiconductor device, a thin layer of semiconductor substrate is left below the drift region of a semiconductor device. A power semiconductor device has an active region that includes the drift region and has top and bottom surfaces formed in a layer provided on a semiconductor substrate. A portion of the semiconductor substrate below the active region is removed to leave a thin layer of semiconductor substrate below the drift region. Electrical terminals are provided directly or indirectly to the top surface of the active region to allow a voltage to be applied laterally across the drift region.Type: GrantFiled: December 20, 2007Date of Patent: November 6, 2012Assignee: Cambridge Semiconductor LimitedInventors: Florin Udrea, Gehan Anil Joseph Amaratunga, Tanya Trajkovic, Vasantha Pathirana
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Patent number: 8288250Abstract: A method for making a stack of at least two stages of circuits, each stage including a substrate and at least one component and metallic connections formed in or on this substrate, the assembly of a stage to be transferred onto a previous stage including: a) ionic implantation in the substrate of the stage to be transferred through at least part of the components, so as to form a weakened zone, b) formation of metallic connections of the components, c) transfer and assembly of some of this substrate onto the previous stage, and d) a step to thin the transferred part of the substrate by fracture along the weakened zone.Type: GrantFiled: September 22, 2009Date of Patent: October 16, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Laurent Clavelier, Chrystel Deguet, Patrick Leduc, Hubert Moriceau
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Patent number: 8278187Abstract: Disclosed is a method for reprocessing a semiconductor substrate which is by-produced in manufacturing a silicon-on-insulator substrate. The method includes: forming an embrittlement layer in a single crystal semiconductor substrate; bonding the single crystal semiconductor substrate with a base substrate having an insulating surface; and separating the single crystal semiconductor substrate along the embrittlement layer to give a silicon-on-insulator substrate and a semiconductor substrate to be reprocessed. The above steps provide, in the peripheral portion on the semiconductor substrate, a projection comprising the embrittlement layer and a single crystal semiconductor layer over the embrittlement layer. The method is characterized by an etching step to selectively remove the projection without etching a portion where the projection is absent, which allows the semiconductor substrate to be reused for the production of another silicon-on-insulator substrate.Type: GrantFiled: June 10, 2010Date of Patent: October 2, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Kazuya Hanaoka
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Patent number: 8247261Abstract: A method for manufacturing a thin film direct bandgap semiconductor active solar cell device comprises providing a source substrate having a surface and disposing on the surface a stress layer having a stress layer surface area in contact with and bonded to the surface of the source substrate. Operatively associating a handle foil with the stress layer and applying force to the handle foil separates the stress layer from the source substrate, and leaves a portion of the source substrate on the stress layer surface substantially corresponding to the area in contact with the surface of the source substrate. The portion is less thick than the source layer. The stress layer thickness is below that which results in spontaneous spalling of the source substrate. The source substrate may comprise an inorganic single crystal or polycrystalline material such as Si, Ge, GaAs, SiC, sapphire, or GaN. In one embodiment the stress layer comprises a flexible material.Type: GrantFiled: May 21, 2010Date of Patent: August 21, 2012Assignee: International Business Machines CorporationInventors: Stephen W. Bedell, Keith E. Fogel, Paul A. Lauro, Devendra Sadana
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Patent number: 8236588Abstract: An object is to provide a multi-wavelength integrated semiconductor laser device which can reduce variations in emission point distance, can be formed by simplified manufacturing processes, and can provide improve electric characteristics. A first semiconductor laser element 100 having an active layer AL1 for emitting a laser beam of a first wavelength from its light-emitting point X1 and a second semiconductor laser element 200 having an active layer AL2 for emitting a laser beam of a second wavelength from its light-emitting point X2 are bonded to each other via an adhesive layer MC made of metal. At least either one of the semiconductor laser elements has a ridge waveguide made of an n-type semiconductor. The semiconductor laser elements 100 and 200 are bonded via the metal adhesive layer MC at the sides of their respective p-type semiconductors. A submount SUB is bonded to the first semiconductor laser element 100 via metal at a side where its ridge waveguide is formed.Type: GrantFiled: December 14, 2006Date of Patent: August 7, 2012Assignee: Pioneer CorporationInventors: Mamoru Miyachi, Yoshinori Kimura
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Patent number: 8222083Abstract: A semiconductor package includes a semiconductor chip provided with a first surface having a bonding pad, a second surface opposing to the first surface and side surfaces; a first redistribution pattern connected with the bonding pad and extending along the first surface from the bonding pad to an end portion of the side surface which meets with the second surface; and a second redistribution pattern disposed over the first redistribution pattern and extending from the side surfaces to the first surface. In an embodiment of the present invention, in which the first redistribution pattern connected with the bonding pad is formed over the semiconductor chip and the second redistribution pattern is formed over the first redistribution pattern, it is capable of reducing a length for signal transfer since the second redistribution pattern is used as an external connection terminal.Type: GrantFiled: April 13, 2010Date of Patent: July 17, 2012Assignee: Hynix Semiconductor Inc.Inventors: Seung Hyun Lee, Seung Taek Yang
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Patent number: 8216917Abstract: A method for fabricating a substrate of the semiconductor on insulator type by forming an epitaxial layer of semiconducting material on a donor substrate having oxygen precipitates with a density of less than 1010/cm3 or a mean size of less than 500 nm, forming an oxide layer on either a donor or receiver substrate, implanting atomic species in the donor substrate to form a weakened zone in the epitaxial layer, bonding the donor and receiver substrates together, with the oxide layer present at the bonding interface, fracturing the donor substrate in the weakened zone to transfer a layer of the donor substrate to the receiver substrate with the transferred layer including the epitaxial layer, and recycling the remainder of the donor substrate to form a receiver substrate for fabrication of a second semiconductor on insulator type substrate.Type: GrantFiled: January 29, 2009Date of Patent: July 10, 2012Assignee: SoitecInventor: Christophe Maleville
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Patent number: 8211781Abstract: A manufacturing method for semiconductor devices having a metal support is provided. The method in one aspect includes growing a semiconductor film on a growth substrate; forming a metal support on a surface of said semiconductor film opposite to the growth substrate; thereafter removing said growth substrate from said semiconductor film; forming a street groove reaching said metal support in the said semiconductor film; radiating a first laser beam onto said metal support to form a first dividing groove having a substantially flat bottom in said metal support; and radiating a second laser beam onto said metal support to form a second dividing groove that penetrates through a portion of said metal support that remains where the first dividing groove is formed.Type: GrantFiled: November 10, 2009Date of Patent: July 3, 2012Assignee: Stanley Electric Co., Ltd.Inventors: Tatsuma Saito, Shinichi Tanaka, Yusuke Yokobayashi
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Patent number: 8211780Abstract: Adhesion defects between a single crystal semiconductor layer and a support substrate are reduced to manufacture an SOI substrate achiving high bonding strength between the single crystal semiconductor layer and the support substrate.Type: GrantFiled: December 1, 2008Date of Patent: July 3, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Shunpei Yamazaki
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Patent number: 8207045Abstract: An object is to reduce occurrence of defective bonding between a base substrate and a semiconductor substrate even when a silicon nitride film or the like is used as a bonding layer. Another object is to provide a method for manufacturing an SOI substrate by which an increase in the number of steps can be suppressed.Type: GrantFiled: January 25, 2010Date of Patent: June 26, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Tetsuya Kakehata, Kazutaka Kuriki
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Patent number: 8169019Abstract: A metal-oxide-semiconductor chip having a semiconductor substrate, an epitaxial layer, at least a MOS cell, and a metal pattern layer is provided. The epitaxial layer is located on the semiconductor substrate and has an active region, a termination region, and a scribe line preserving region defined on an upper surface thereof. An etched sidewall of the epitaxial layer is located in the scribe line preserving region. The boundary portion of the upper surface of the semiconductor substrate is thus exposed. The MOS cell is located in the active region. The metal pattern layer is located on the epitaxial layer and has a gate pad coupled to the gate of the MOS cell, a source pad coupled to the source of the MOS cell, and a drain pattern, which is partly located on the upper surface of the semiconductor substrate.Type: GrantFiled: September 10, 2009Date of Patent: May 1, 2012Assignee: Niko Semiconductor Co., Ltd.Inventors: Kuo-Chang Tsen, Kao-Way Tu
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Patent number: 8168470Abstract: A semiconductor device is made with a conductive via formed through a top-side of the substrate. The conductive via extends vertically through less than a thickness of the substrate. An integrated passive device (IPD) is formed over the substrate. A plurality of first conductive pillars is formed over the first IPD. A first semiconductor die is mounted over the substrate. An encapsulant is formed around the first conductive pillars and first semiconductor die. A second IPD is formed over the encapsulant. An interconnect structure is formed over the second IPD. The interconnect structure operates as a heat sink. A portion of a back-side of the substrate is removed to expose the first conductive via. A second semiconductor die is mounted to the back-side of the substrate. The second semiconductor die is electrically connected to the first IPD and first semiconductor die through the conductive via.Type: GrantFiled: December 8, 2008Date of Patent: May 1, 2012Assignee: STATS ChipPAC, Ltd.Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
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Patent number: 8148237Abstract: A method of cleaving a substrate is disclosed. A species, such as hydrogen or helium, is implanted into a substrate to form a layer of microbubbles. The substrate is then annealed a pressure greater than atmosphere. This annealing may be performed in the presence of the species that was implanted. This diffuses the species into the substrate. The substrate is then cleaved along the layer of microbubbles. Other steps to form an oxide layer or to bond to a handle also may be included.Type: GrantFiled: August 5, 2010Date of Patent: April 3, 2012Assignee: Varian Semiconductor Equipment Associates, Inc.Inventors: Deepak Ramappa, Julian G. Blake
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Patent number: 8110439Abstract: An electronic component is disclosed including a plurality of stacked semiconductor packages. A first such embodiment includes an internal connector for electrically coupling the stacked semiconductor packages. A second such embodiment includes an external connector for electrically coupling the stacked semiconductor packages.Type: GrantFiled: November 9, 2009Date of Patent: February 7, 2012Assignee: SanDisk Technologies Inc.Inventors: Cheeman Yu, Chi-Chin Liao, Hem Takiar
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Patent number: 8101523Abstract: A nitride semiconductor wafer is planar-processed by grinding a bottom surface of the wafer, etching the bottom surface by, e.g., KOH for removing a bottom process-induced degradation layer, chamfering by a rubber whetstone bonded with 100 wt %-60 wt % #3000-#600 diamond granules and 0 wt %-40 wt % oxide granules, grinding and polishing a top surface of the wafer, etching the top surface for eliminating a top process-induced degradation layer and maintaining a 0.5 ?m-10 ?m thick edge process-induced degradation layer.Type: GrantFiled: November 5, 2010Date of Patent: January 24, 2012Assignee: Sumitomo Electric Industries, Ltd.Inventors: Keiji Ishibashi, Hidenori Mikami, Naoki Matsumoto
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Patent number: 8101503Abstract: A semiconductor structure includes a thin semiconductor layer fixed on an applicator or flexible support, the thin layer having an exposed surface characterized by fractured solid bridges spaced apart by cavities. A method of producing the thin layer of semiconductor material includes implanting ions into the semiconductor wafer to define a reference plane, where the ion dose is above a minimum dose, but below a critical dose so as to avoid degrading the wafer surface. The method further includes applying a thermal treatment to define a layer of microcavities and applying stress to free the thin layer from the wafer.Type: GrantFiled: December 12, 2008Date of Patent: January 24, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Bernard Aspar, Michel Bruel, Thierry Poumeyrol
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Patent number: 8093138Abstract: A method of forming an epitaxially grown layer by forming a region of weakness in a support substrate to define a support portion and a remainder portion on opposite sides of the region of weakness, epitaxially growing an epitaxially grown layer on the support portion after forming the region of weakness but prior to detachment of the support portion from the remainder portion; bonding the epitaxially grown layer to an acceptor substrate before detaching the remainder portion from the support portion; and detaching the remainder portion from the support portion at the region of weakness. The epitaxially grown layer may be removed from the support portion as a free-standing structure.Type: GrantFiled: May 20, 2009Date of Patent: January 10, 2012Assignee: S.O.I.Tec Silicon on Insulator TechnologiesInventors: Bruce Faure, Lea Di Cioccio
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Patent number: 8093687Abstract: Methods for transferring of a useful layer from a support are described. In an embodiment, the method includes for facilitating transfer of a useful layer from a support by providing an interface in a first support to define a useful layer; and forming a peripheral recess on the first support below the interface so that the periphery of the interface is exposed to facilitate removal and transfer of the useful layer. An epitaxial layer can be formed on the useful layer after forming the recess, with the width and depth of the recess being sufficient to accommodate the volume of residual material resulting from formation of the epitaxial layer without covering the periphery of the interface. Alternatively, an epitaxial layer can be formed on the useful layer after forming the recess, wherein the peripheral recess is configured for receiving sufficient residual material from the epitaxial layer to prevent bonding between the residual material and the useful layer.Type: GrantFiled: June 23, 2008Date of Patent: January 10, 2012Assignee: S.O.I.Tec Silicon on Insulator TechnologiesInventors: Fabrice Letertre, Olivier Rayssac
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Patent number: 8076168Abstract: A method for producing a light-emitting device, includes: performing, on a first substrate made of III-V group compound semiconductor, crystal growth of a laminated body including an etching easy layer contiguous to the first substrate and a light-emitting layer made of nitride semiconductor; bonding a second substrate and the laminated body; and detaching the second substrate provided with the light-emitting layer from the first substrate by, one of removing the etching easy layer by using a solution etching method, and removing the first substrate and the etching easy layer by using mechanical polishing method.Type: GrantFiled: December 2, 2008Date of Patent: December 13, 2011Assignee: Kabushiki Kaisha ToshibaInventor: Ryo Saeki
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Patent number: 8048774Abstract: A formation in a first surface of a substrate is machined by an ultraviolet or visible radiation laser, to a predetermined depth that is less than a full depth of the substrate; and material is removed from a second surface of the substrate opposed to the first surface to the predetermined depth from the first surface to communicate with the formation. Material may be removed by, for example, lapping and polishing, chemical etching, plasma etching or laser ablation. The invention has application in, for example, dicing semiconductor wafers to forming metallised vias in wafers.Type: GrantFiled: October 1, 2002Date of Patent: November 1, 2011Assignee: Electro Scientific Industries, Inc.Inventors: Adrian A. Boyle, Oonagh Meignan
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Patent number: 8048775Abstract: A process of forming ultra thin wafers having an edge support ring is disclosed. The process provides an edge support ring having an angled inner wall compatible with spin etch processes.Type: GrantFiled: July 20, 2007Date of Patent: November 1, 2011Assignee: Alpha and Omega Semiconductor IncorporatedInventors: Tao Feng, Sung-Shan Tai
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Patent number: 8035233Abstract: A Three-Dimensional Structure (3DS) Memory allows for physical separation of the memory circuits and the control logic circuit onto different layers such that each layer may be separately optimized. One control logic circuit suffices for several memory circuits, reducing cost Fabrication of 3DS memory involves thinning of the memory circuit to less than 50 ?m in thickness and bonding the circuit to a circuit stack while still in wafer substrate form. Fine-grain high density inter-layer vertical bus connections are used. The 3DS memory manufacturing method enables several performance and physical size efficiencies, and is implemented with established semiconductor processing techniques.Type: GrantFiled: March 3, 2003Date of Patent: October 11, 2011Assignee: Elm Technology CorporationInventor: Glenn J Leedy
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Patent number: 8008130Abstract: In accordance with the present invention, during formation of the interconnection board, the interconnection board remains securely fixed to a high rigidity plate being higher in rigidity than the interconnection board for suppressing the interconnection board from being bent.Type: GrantFiled: March 23, 2007Date of Patent: August 30, 2011Assignee: Renesas Electronics CorporationInventor: Hirokazu Honda
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Patent number: 8008103Abstract: A nitride-based light emitting device capable of achieving an enhancement in emission efficiency and an enhancement in reliability is disclosed. The light emitting device includes a semiconductor layer, and a light extracting layer arranged on the semiconductor layer and made of a material having a refractive index equal to or higher than a reflective index of the semiconductor layer.Type: GrantFiled: December 14, 2009Date of Patent: August 30, 2011Assignees: LG Innotek Co., Ltd., LG Electronics Inc.Inventors: Hyun Kyong Cho, Sun Kyung Kim, Jun Ho Jang
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Patent number: 7981238Abstract: A method relaxing a strained thin film, secured via a first main face of an initial support, the second main face of the thin film being a contact face. The method supplies an intermediate support including a polymer layer having a main free contact face, the polymer's thermal expansion coefficient being greater than that of the thin film, adhesively brings into contact the contact face of the strained thin film with the contact face of the polymer layer, eliminates the initial support, realizing relaxation of the thin film through formation of wrinkles and revealing the first main face of the thin film, increases the polymer layer temperature to stretch the relaxed thin film and eliminate the wrinkles, secures the first main face of the thin film with one face of a receiving substrate, and eliminates the intermediate support to obtain a relaxed thin film integral with the receiving substrate.Type: GrantFiled: December 26, 2006Date of Patent: July 19, 2011Assignee: Commissariat a l'Energie AtomiqueInventors: Lea Di Cioccio, Damien Bordel, Genevieve Grenet, Philippe Regreny
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Patent number: 7977156Abstract: A method for manufacturing chip stack packages may include: providing at least two wafers, each wafer having a plurality of chips, and scribe lanes formed between and separating adjacent chips; forming a plurality of via holes in peripheral portions of the scribe lanes; forming connection vias by filling the via holes; establishing electrical connections between the chip pads and corresponding connection vias; removing material from the back sides of the wafers to form thinned wafers; separating the thinned wafers into individual chips by removing a central portion of each scribe lane; attaching a first plurality of individual chips to a test wafer; attaching a second plurality of individual chips to the first plurality of individual chips to form a plurality of chip stack structures; encapsulating the plurality of chip stack structures; and separating the plurality of chip stack structures to form individual chip stack packages.Type: GrantFiled: April 22, 2009Date of Patent: July 12, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Kang-Wook Lee, Gu-Sung Kim, Dong-Hyeon Jang, Seung-Duk Baek, Jae-Sik Chung
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Patent number: 7977211Abstract: The current invention presents a method for thinning wafers. The method uses a two-step process, whereby first the carrier wafer (2) is thinned and in a second step the device wafer (1) is thinned. The method is based on imprinting the combined thickness non-uniformities of carrier (2) and glue layer (3) essentially on the carrier (2), with a resulting low TTV of the wafer (100) after thinning.Type: GrantFiled: April 8, 2008Date of Patent: July 12, 2011Assignees: IMEC, Katholieke Universiteit LeuvenInventor: Ricardo Cotrin Teixeira
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Patent number: 7972892Abstract: A composite growth-assisting substrate 10 is formed by epitaxially growing a separation-assisting compound semiconductor layer 10k composed of a non-GaAs III-V compound semiconductor single crystal, and then a sub-substrate 10e composed of a GaAs single crystal in this order, on a first main surface of a substrate bulk 10m composed of a GaAs single crystal. The sub-substrate portion 10e is then separated from the composite growth-assisting substrate 10, so as to be left as a residual substrate portion 1 on a second main surface of the main compound semiconductor layer 40, and a portion of the residual substrate portion 1 is cut off to thereby form a cut-off portion 1j having a bottom surface used as a light extraction surface. By this configuration, the light emitting device is provided as allowing effective use of the GaAs substrate, and increasing the light extraction efficiency.Type: GrantFiled: February 25, 2005Date of Patent: July 5, 2011Assignee: Shin-Etsu Handotai Co., Ltd.Inventors: Masato Yamada, Masanobu Takahashi
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Patent number: 7960195Abstract: A method of manufacturing a laser diode array capable of inhibiting electric cross talk is provided. The method of manufacturing a laser diode array includes a processing step of forming a peel layer containing an oxidizable material and a vertical resonator structure over a first substrate sequentially from the first substrate side by crystal growth, and then selectively etching the peel layer and the vertical resonator structure to the first substrate, thereby processing into a columnar shape, a peeling step of oxidizing the peel layer from a side face, and then peeling the vertical resonator structure of columnar shape from the first substrate, and a rearrangement step of jointing a plurality of vertical resonator structures of columnar shape obtained by the peeling step to a surface of a metal layer of a second substrate formed with the metal layer on the surface.Type: GrantFiled: July 23, 2008Date of Patent: June 14, 2011Assignee: Sony CorporationInventors: Osamu Maeda, Masaki Shiozaki, Takahiro Arakida
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Patent number: 7955969Abstract: Processes are described for forming very thin semiconductor die (1 to 10 microns thick) in which a thin layer of the upper surface of the wafer is processed with junction patterns and contacts while the wafer bulk is intact. The top surface is then contacted by a rigid wafer carrier and the bulk wafer is then ground/etched to an etch stop layer at the bottom of the thin wafer. A thick bottom contact is then applied to the bottom surface and the top wafer carrier is removed. All three contacts of a MOSFET may be formed on the top surface in one embodiment or defined by the patterning of the bottom metal contact.Type: GrantFiled: September 8, 2006Date of Patent: June 7, 2011Assignee: International Rectifier CorporationInventors: Daniel M. Kinzer, Michael A. Briere, Alexander Lidow
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Patent number: 7943470Abstract: The semiconductor device according to the present invention includes a through electrode that penetrates through a silicon substrate, an isolation trench provided to penetrate through the silicon substrate to surround the through electrode, a silicon film in contact with an inner surface of the isolation trench, a silicon film in contact with an outer surface of the isolation trench, and an insulation film provided between the silicon films. According to the present invention, the silicon film within the isolation trench can be substantially regarded as a part of the silicon substrate. Therefore, even when the width of the isolation trench is increased to increase the etching rate, the width of the insulation film becoming a dead space can be made sufficiently small. Consequently, the chip area can be decreased.Type: GrantFiled: March 28, 2008Date of Patent: May 17, 2011Assignee: Elpida Memory, Inc.Inventor: Shiro Uchiyama
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Patent number: 7923344Abstract: A method for fabricating a backside illuminated image sensor is provided. An exemplary method can include providing a substrate with a front surface and a back surface; forming a first alignment mark for global alignment on the front surface of the substrate; forming a second alignment mark for fine alignment in a clear-out region on the front surface of the substrate; aligning the substrate from the back surface using the first alignment mark; and removing a portion of the back surface of the substrate at the clear-out region for locating the second alignment mark.Type: GrantFiled: December 9, 2009Date of Patent: April 12, 2011Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Shih-Chi Fu, Gwo-Yuh Shiau, Liang-Lung Yao, Yuan-Chih Hsieh, Feng-Jia Shiu
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Patent number: 7892947Abstract: A workpiece machining method includes attaching a workpiece to a workpiece support with the aid of joining means. The workpiece and the workpiece support are joined to one another by an annular joining means. The composite produced is machined. The machined workpiece is separated from the workpiece support.Type: GrantFiled: October 13, 2006Date of Patent: February 22, 2011Assignee: Infineon Technologies AGInventors: Stephen Bradl, Walther Grommes, Werner Kröninger, Michael Melzl, Josef Schwaiger, Thilo Stache
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Patent number: 7888172Abstract: A chip package structure is provided, includes a chip that having a plurality of pads and an adhesive layer on the back side; an encapsulated structure is covered around the four sides of the chip to expose the pads, and the through holes is formed within the encapsulated structure; a patterned first protective layer is formed on the portion surface of encapsulated structure, the portion of active surface of the chips, and the pads of the chip and the through holes are to be exposed; a metal layer is formed on the portion surface of the patterned first protective layer and formed to electrically connect the pads and to fill with the through holes; the patterned second protective layer is formed on the patterned first protective layer and the portion of metal layer, and the portion surface of metal layer is to be exposed; a patterned UBM layer is formed on the exposed surface of the metal layer and the portion surface of the patterned second protective layer; and the conductive elements is formed on the patterType: GrantFiled: December 9, 2008Date of Patent: February 15, 2011Assignees: Chipmos Technologies Inc, Chipmos Technologies (Bermuda) LtdInventor: Cheng-Tang Huang
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Patent number: 7883989Abstract: It is an object of the invention to provide a peeling method which does not damage a peeling layer, and to perform peeling not only a peeling layer having a small-size area but also an entire peeling layer having a large-size area with a preferable yield. In the invention, after pasting a fixing substrate, a part of a glass substrate is removed by scribing or performing laser irradiation on the glass substrate which leads to providing a trigger. Then, peeling is performed with a preferable yield by performing peeling from the removed part. In addition, a crack is prevented by covering the entire face except for a connection portion of a terminal electrode (including a periphery region of the terminal electrode) with a resin.Type: GrantFiled: October 14, 2009Date of Patent: February 8, 2011Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yuugo Goto, Yumiko Fukumoto, Toru Takayama, Junya Maruyama, Takuya Tsurume
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Patent number: 7862677Abstract: To provide a technique for manufacturing a high-performance display device by employing a plastic substrate. A peeling layer is formed on an element-forming substrate, and a semiconductor element and a luminous element are further formed thereon. Then, a fixed substrate (130) is bonded on the luminous element by using a first adhesive (129). The entire substrate in this state is exposed in a gas containing halogen fluoride to thereby remove the peeling layer and separate the element-forming substrate. Thereafter, a bonding substrate (132) that comprises a plastic substrate is bonded in place of the separated element-forming substrate.Type: GrantFiled: May 31, 2006Date of Patent: January 4, 2011Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Setsuo Nakajima, Shunpei Yamazaki
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Patent number: 7851361Abstract: A laser ablated wafer for a semiconductor device, such as a MOSFET or other power device, and a method of producing such a wafer to achieve a lower electrical resistance are provided. The method includes forming first holes, slots or trenches on a first surface of the wafer and focusing a laser beam to form second trenches on a bottom surface of the wafer, and filling the trenches, for example using aluminum or other metallic filling, to provide conductive electrodes or conductive surfaces for the semiconductor device. In such a wafer each trench on the second surface may be deeper, for example more than one hundred microns deep and tens of microns wide.Type: GrantFiled: December 11, 2006Date of Patent: December 14, 2010Assignee: International Rectifier CorporationInventors: Hugo R. G. Burke, Robert Montgomery
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Patent number: 7846767Abstract: Semiconductor-on-diamond (SOD) substrates and methods for making such substrates are provided. In one aspect, a method of making an SOD device is provided that includes etching depressions into an etch surface of a semiconductor substrate to a uniform depth, depositing a diamond layer onto the etch surface to form diamond-filled depressions, and thinning the semiconductor substrate at a thinning surface opposite the etch surface until the diamond filled depressions are exposed, thus forming a semiconductor device having a thickness substantially equal to the uniform depth.Type: GrantFiled: September 6, 2007Date of Patent: December 7, 2010Inventor: Chien-Min Sung
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Patent number: 7846776Abstract: Methods for releasably attaching sacrificial support members to microfeature workpieces and microfeature devices formed using such methods are disclosed herein. One embodiment, for example, is directed to a method for processing a microfeature workpiece releasably attached to a first support member. The workpiece includes a microelectronic substrate, a plurality of microelectronic dies on and/or in the substrate, and a sacrificial support member attached to an active side of the substrate. The method can include separating individual dies from the workpiece by cutting through the sacrificial support member and the substrate while the workpiece is attached to the first support member. The method can also include attaching a singulated die and corresponding portion of the sacrificial support member as a unit to a second support member.Type: GrantFiled: August 17, 2006Date of Patent: December 7, 2010Assignee: Micron Technology, Inc.Inventors: William A. Polinsky, Michael B. Ball
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Patent number: 7785989Abstract: A method of manufacturing a solar cell by providing a gallium arsenide carrier with a prepared bonding surface; providing a sapphire substrate; bonding the gallium arsenide carrier and the sapphire substrate to produce a composite structure; detaching the bulk of the gallium arsenide carrier from the composite structure, leaving a gallium arsenide growth substrate on the sapphire substrate; and depositing a sequence of layers of semiconductor material forming a solar cell on the growth substrate. For some solar cells, the method further includes mounting a surrogate second substrate on top of the sequence of layers of semiconductor material forming a solar cell; and removing the growth substrate.Type: GrantFiled: December 17, 2008Date of Patent: August 31, 2010Assignee: Emcore Solar Power, Inc.Inventors: Paul R. Sharps, Arthur Cornfeld, Tansen Varghese, Fred Newman, Jacqueline Diaz
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Patent number: 7776624Abstract: A semiconductor fabrication method. The method includes providing a semiconductor substrate, wherein the semiconductor substrate includes a semiconductor material. Next, a top portion of the semiconductor substrate is removed. Next, a first semiconductor layer is epitaxially grown on the semiconductor substrate, wherein a first atomic percent of a first semiconductor material in the first semiconductor layer is equal to a substrate atomic percent of the substrate semiconductor material in the semiconductor substrate.Type: GrantFiled: July 8, 2008Date of Patent: August 17, 2010Assignee: International Business Machines CorporationInventors: Ashima B. Chakravarti, Judson Robert Holt, Jeremy John Kempisty, Suk Hoon Ku, Woo-Hyeong Lee, Amlan Majumdar, Ryan Matthew Mitchell, Renee Tong Mo, Zhibin Ren, Dinkar Singh
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Patent number: 7776637Abstract: A method of manufacturing a light emitting diode, wherein a laser lift-off (LLO) layer and an epi-layer are formed on a nitride semiconductor substrate, and the nitride semiconductor substrate is then separated through a laser lift-off process, thereby improving the characteristics of the epi-layer and enabling to fabricate a high-grade and high-efficiency light emitting diode. Further, the LLO layer thus prepared is removed using a laser beam so that the relatively expensive nitride semiconductor substrate can be re-used, thereby reducing manufacturing costs.Type: GrantFiled: May 25, 2006Date of Patent: August 17, 2010Assignees: LG Electronics Inc., LG Innotek Co., Ltd.Inventor: See jong Leem
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Patent number: 7727859Abstract: It is an object of the present invention to provide a semiconductor device in which a barrier property is improved; a compact size, a thin shape, and lightweight are achieved; and flexibility is provided. By providing a stacked body including a plurality of transistors in a space between a pair of substrates, a semiconductor device is provided, in which a harmful substance is prevented from entering and a barrier property is improved. In addition, by using a pair of substrates which are thinned by performing grinding and polishing, a semiconductor device is provided, in which a compact size, a thin shape, and lightweight are achieved. Further, a semiconductor device is provided, in which flexibility is provided and a high-added value is achieved.Type: GrantFiled: June 12, 2006Date of Patent: June 1, 2010Assignee: Semiconductor Energy Laboratory Co., LtdInventors: Yasuko Watanabe, Junya Maruyama, Yoshitaka Moriya
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Patent number: 7713106Abstract: A device grinding method comprising the steps of holding the undersurface of a protective member which supports a plurality of devices by affixing their front surfaces onto the top surface of the protective member, on the chuck table of a grinding machine and grinding the rear surfaces of the plurality of devices held on the chuck table through the protective member by a grinding means while the chuck table is rotated, to form the thicknesses of the plurality of the devices to have a predetermined value, wherein the metering portion of a non-contact thickness metering equipment is brought to a position right above the rotating rotation locus of a predetermined device out of the plurality of devices supported on the chuck table through the protective member, the rear surfaces of the plurality of devices are ground by the grinding means while the thickness of the rotating predetermined device is measured with the non-contact thickness metering equipment, and the grinding by the grinding means is terminated whenType: GrantFiled: April 3, 2008Date of Patent: May 11, 2010Assignee: Disco CorporationInventor: Kazuma Sekiya
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Patent number: 7708854Abstract: Explained, inter alia, is a method in which a workpiece (52) to be processed is fastened to a work carrier (10) by means of a solid (62). The work carrier (10) is made of a porous material, e.g. of porous ceramic. This processing method permits simple manipulation of the wafer during the processing. In addition, the workpiece (52) can be easily separated from the work carrier (10) using a solvent.Type: GrantFiled: December 5, 2003Date of Patent: May 4, 2010Assignee: Infineon Technologies AGInventors: Werner Kröninger, Günter Lang