Groove Formation Patents (Class 438/42)
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Patent number: 12219804Abstract: According to one embodiment, a display device includes an insulating substrate, a first insulating layer disposed on the insulating substrate, a lower electrode disposed on the first insulating layer, a second insulating layer disposed on the first insulating layer and including an opening overlapping the lower electrode, an organic layer including a light-emitting layer, disposed in the opening and covering the lower electrode, an upper electrode comprising a first end surface, which is an inclined surface, directly above the second insulating layer and stacked on the organic layer and an optical adjustment layer including a second end surface on an inner side with respect to the first end surface and in contact with the upper electrode.Type: GrantFiled: January 13, 2022Date of Patent: February 4, 2025Assignee: Japan Display Inc.Inventors: Hayata Aoki, Masumi Nishimura
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Patent number: 12191472Abstract: A non-aqueous electrolyte secondary battery according to one aspect of the present application comprises: a positive electrode; a negative electrode; a heat-resistant layer that is formed on at least one of the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein the heat-resistant layer includes heat-resistant particles, at least the surface of said heat-resistant particles comprising a metal compound, the average thickness of the heat-resistant layer is within the range 0.5 ?m-5 ?m, the porosity of the heat-resistant layer is 25%-55%, the average surface roughness (Ra) of the heat-resistant layer is 0.35 ?m or less, and the electronegativity of metal ions of the metal compound is 13.5 or greater.Type: GrantFiled: February 22, 2019Date of Patent: January 7, 2025Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Kazuhiro Yoshii
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Patent number: 12188892Abstract: A high-density bioprobe array is provided comprising conductive or optical shanks. A method of making high-density bioprobe arrays also is provided. A bioprobe system using the array also is provided.Type: GrantFiled: January 31, 2019Date of Patent: January 7, 2025Assignee: Carnegie Mellon UniversityInventors: Rahul Panat, Eric A. Yttri, Mohammad Sadeq Saleh
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Patent number: 12183848Abstract: A light emitting device including a substrate, a first conductivity-type semiconductor layer, a mesa including a second conductivity-type semiconductor layer and an active layer, first and second contact electrodes respectively contacting the first and second conductivity-type semiconductor layers, a passivation layer covering the first and second contact electrodes, the mesa, and including first and second openings, and first and second bump electrodes electrically connected to the first and second contact electrodes through the first and second openings, respectively, in which the first and second bump electrodes are disposed on the mesa, the passivation layer is disposed between the first bump electrode and the second contact electrode, the first contact electrode includes a reflective material, and a portion of the first opening is surrounded with a side surface of the mesa, and another portion of the first opening is not surrounded with the side surface of the mesa.Type: GrantFiled: October 12, 2022Date of Patent: December 31, 2024Assignee: Seoul Viosys Co., Ltd.Inventors: Seong Kyu Jang, Hong Suk Cho, Kyu Ho Lee, Chi Hyun In
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Patent number: 11697614Abstract: Embodiments of a article including include a substrate and a patterned coating are provided. In one or more embodiments, when a strain is applied to the article, the article exhibits a failure strain of 0.5% or greater. Patterned coating may include a particulate coating or may include a discontinuous coating. The patterned coating of some embodiments may cover about 20% to about 75% of the surface area of the substrate. Methods for forming such articles are also provided.Type: GrantFiled: January 25, 2021Date of Patent: July 11, 2023Assignee: Corning IncorporatedInventors: Shandon Dee Hart, Guangli Hu, Nicholas James Smith
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Patent number: 11677216Abstract: A light-emitting device comprising VCSELs formed in a die. The VCSEL distribution is characterized by an essentially linear decrease in VCSEL density over the die from a highest VCSEL density in a first die region to a lowest VCSEL density in another die region. The VCSELs share a common anode and a common cathode for collective switching of the plurality of VCSELs. A method of manufacturing such a VCSEL die is also described.Type: GrantFiled: January 28, 2020Date of Patent: June 13, 2023Assignee: LUMILEDS LLCInventor: Rob Jacques Paul Engelen
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Patent number: 11594654Abstract: A method of generating a germanium structure includes performing an epitaxial depositing process on an assembly of a silicon substrate and an oxide layer, wherein one or more trenches in the oxide layer expose surface portions of the silicon substrate. The epitaxial depositing process includes depositing germanium onto the assembly during a first phase, performing an etch process during a second phase following the first phase in order to remove germanium from the oxide layer, and repeating the first and second phases. A germanium crystal is grown in the trench or trenches. An optical device includes a light-incidence surface formed by a raw textured surface of a germanium structure obtained by an epitaxial depositing process without processing the surface of the germanium structure after the epitaxial process.Type: GrantFiled: August 30, 2021Date of Patent: February 28, 2023Assignee: Infineon Technologies AGInventors: Andre Roeth, Henning Feick, Heiko Froehlich, Thoralf Kautzsch, Olga Khvostikova, Stefano Parascandola, Thomas Popp, Maik Stegemann, Mirko Vogt
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Patent number: 11538895Abstract: A display apparatus includes a display area, a non-display area surrounding the display area, and a bending area formed in at least one side of the non-display area. The display apparatus includes a first glass substrate provided in the display area, a second glass substrate provided in the non-display area, an anti-etching member provided to overlap the bending area, and a link line portion formed on the anti-etching member and formed to overlap the non-display area.Type: GrantFiled: December 28, 2020Date of Patent: December 27, 2022Assignee: LG Display Co., Ltd.Inventors: SeungHan Paek, Kyungjae Yoon, HyunJin An, Seongwoo Park
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Patent number: 11437784Abstract: A surface emitting laser may include an isolation layer including a first center portion and a first plurality of outer portions extending from the first center portion, and a metal layer including a second center portion and a second plurality of outer portions extending from the second center portion. The metal layer may be formed on the isolation layer such that a first outer portion, of the second plurality of outer portions, is formed over one of the first plurality of outer portions. The surface emitting laser may include a passivation layer including a plurality of openings. An opening may be formed over the first outer portion. The surface emitting laser may include a plurality of oxidation trenches. An oxidation trench may be positioned at least partially between the first outer portion and a second outer portion of the second plurality of outer portions.Type: GrantFiled: February 21, 2020Date of Patent: September 6, 2022Assignee: Lumentum Operations LLCInventors: Ajit Vijay Barve, Albert Yuen
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Patent number: 11380900Abstract: Provided are an anode for a lithium secondary battery and a lithium secondary battery comprising the same. The anode comprises: a current collector; an anode active material layer disposed on the current collector; and a coating layer disposed on the anode active material layer and including an inorganic material and a binder polymer, wherein the binder polymer has a decomposition temperature of 100° C. to 400° C., and an elastic modulus of 1.0 GPa to 3.0 GPa at 220° C. or lower.Type: GrantFiled: September 29, 2017Date of Patent: July 5, 2022Assignee: SAMSUNG SDI CO., LTD.Inventors: Yongho Kim, Junghyun Nam, Seyeong Kang
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Patent number: 11264530Abstract: Described are light emitting diode (LED) devices having patterned substrates and methods for effectively growing epitaxial III-nitride layers on them. A nucleation layer, comprising a III-nitride material, is grown on a substrate before any patterning takes place. The nucleation layer results in growth of smooth coalesced III-nitride layers over the patterns.Type: GrantFiled: December 19, 2019Date of Patent: March 1, 2022Assignee: LUMILEDS LLCInventors: Isaac Wildeson, Toni Lopez, Hee-Jin Kim, Robert Armitage, Parijat Deb
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Patent number: 11236439Abstract: A method for producing a GaN crystal is provided. In the method, front surfaces of a plurality of tiling GaN seeds closely arranged side by side on a flat surface of a plate are planarized. An aggregated seed is formed by arranging the tiling GaN seeds closely side by side on a susceptor of an HVPE apparatus in the same arrangement as when fixed on the plate, with the front planarized surfaces facing upward. A bulk GaN crystal is grown epitaxially on the aggregated seed by an HVPE method.Type: GrantFiled: September 26, 2019Date of Patent: February 1, 2022Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Yusuke Tsukada, Masayuki Tashiro, Hideo Namita
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Patent number: 11233174Abstract: A semiconductor optical device includes an element structure layer that includes a mesa stripe extending in a first direction; an electrode film that covers at least an upper surface of the mesa stripe; an electrode pad portion that covers a part of a first region positioned in a second direction, intersecting the first direction, relative to the mesa stripe on an upper surface of the element structure layer and is electrically connected to the electrode film; a first dummy electrode that covers another part of the first region and is electrically insulated from the electrode film; and a second dummy electrode that covers at least a part of a second region positioned in a third direction, opposite to the second direction, relative to the mesa stripe on the upper surface of the element structure layer and is electrically insulated from the electrode film, wherein the first dummy electrode includes a first portion disposed in the first direction relative to the electrode pad portion and a second portion disposeType: GrantFiled: March 6, 2020Date of Patent: January 25, 2022Assignee: Lumentum Japan, Inc.Inventors: Masahiro Ebisu, Takayuki Nakajima, Yuji Sekino
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Patent number: 10743448Abstract: A substrate position detection device includes: an irradiator that irradiates a predetermined range of a substrate with a predetermined light; an imager that takes an image of the predetermined range of the substrate irradiated with the predetermined light; a moving mechanism that causes a relative movement of the imager and the substrate; and a controller that: detects a position of the substrate by sequentially executing to a plurality of recognition objects on the substrate: a moving process of relatively moving the imager to a position corresponding to a predetermined recognition object among the plurality of recognition objects on the substrate; an imaging process of taking an image of the predetermined recognition object under a predetermined imaging condition; and a recognition process of recognizing the predetermined recognition object based on image data obtained by the imaging process.Type: GrantFiled: January 28, 2019Date of Patent: August 11, 2020Assignee: CKD CORPORATIONInventors: Takahiro Ninomiya, Kensuke Takamura, Nobuyuki Umemura
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Patent number: 10641824Abstract: A semiconductor device comprises a device substrate and a metal film, with first and second non-recessed areal regions separated by a recessed areal region. The metal film covers contiguously the recessed and non-recessed areal regions and transition surfaces joining them. A first transition surface includes metallized portions over which (i) the first transition surface is not parallel to the other transition surface, (ii) the first transition surface is inclined relative to the device substrate, and (iii) the metal film on the first transition surface is contiguous with adjacent metal film portions on the recessed and non-recessed areal regions. A portion of an optoelectronic device surface running parallel to an optical waveguide of the device can be left exposed by a metal film on the device. Light propagating transversely out of the waveguide through the exposed portion can be detected, measured, or imaged for non-destructive device characterization or testing.Type: GrantFiled: December 1, 2017Date of Patent: May 5, 2020Assignee: Emcore CorporationInventors: Xiaoguang He, Ruby Zendejaz, Dustin Huynh
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Patent number: 10325793Abstract: A method for producing a crystal substrate includes preparing, measuring, holding, and machining. The preparing prepares a crystal substrate body including a curved crystal lattice plane. The measuring measures a shape feature of the crystal lattice plane. The holding holds the crystal substrate body in a warped state in accordance with the shape feature measured by the measuring, to more flatten the crystal lattice plane than the crystal lattice plane at the preparing. The machining machines a surface of the crystal substrate body held in the warped state, to flatten the surface.Type: GrantFiled: May 22, 2017Date of Patent: June 18, 2019Assignee: SCIOCS COMPANY LIMITEDInventors: Masahiro Hayashi, Chiharu Kimura
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Patent number: 10312491Abstract: A separator includes a first layer that has a first principal face and a second principal face, and a second layer that is formed on at least one of the first principal face and the second principal face. The first layer is a microporous membrane including a first polymer resin, and the second layer is a microporous membrane including inorganic particles having an electrically insulating property and a second polymer resin.Type: GrantFiled: December 3, 2010Date of Patent: June 4, 2019Assignee: Murata Manufacturing Co., Ltd.Inventors: Kazuki Chiba, Atsushi Kajita, Yukako Teshima, Masatake Hayashi
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Patent number: 9788814Abstract: An ultrasonic measuring apparatus includes an ultrasonic transducer device having a substrate and an ultrasonic transducer element array that has a first channel group and a second channel group that are arranged on the substrate, a first integrated circuit apparatus that is mounted on the substrate, at one edge portion of the ultrasonic transducer element array in a first direction, such that a long-side direction coincides with a second direction that intersects the first direction, and performs at least one of signal transmission to the first channel group and signal reception from the first channel group, and a second integrated circuit apparatus that is mounted on the substrate, at the other edge portion of the ultrasonic transducer element array in the first direction, such that the long-side direction coincides with the second direction, and performs at least one of signal transmission to the second channel group and signal reception from the second channel group.Type: GrantFiled: July 17, 2014Date of Patent: October 17, 2017Assignee: Seiko Epson CorporationInventor: Kogo Endo
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Patent number: 9466762Abstract: A base for making an epitaxial structure is provided. The base includes a substrate and a carbon nanotube layer. The substrate has an epitaxial growth surface. The carbon nanotube layer is located on the epitaxial growth surface. The carbon nanotube layer defines a plurality of apertures to expose part of the epitaxial growth surface so that an epitaxial layer can grow from an exposed epitaxial growth surface and through the apertures. A method for making an epitaxial structure using the base is also provided.Type: GrantFiled: October 18, 2011Date of Patent: October 11, 2016Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Yang Wei, Chen Feng, Shou-Shan Fan
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Patent number: 9293653Abstract: Certain example embodiments of this invention relate to techniques for improving the performance of Lambertian and non-Lambertian light sources. In certain example embodiments, this is accomplished by (1) providing an organic-inorganic hybrid material on LEDs (which in certain example embodiments may be a high index of refraction material), (2) enhancing the light scattering ability of the LEDs (e.g., by fractal embossing, patterning, or the like, and/or by providing randomly dispersed elements thereon), and/or (3) improving performance through advanced cooling techniques. In certain example instances, performance enhancements may include, for example, better color production (e.g., in terms of a high CRI), better light production (e.g., in terms of lumens and non-Lambertian lighting), higher internal and/or external efficiency, etc.Type: GrantFiled: October 8, 2010Date of Patent: March 22, 2016Assignee: Guardian Industries Corp.Inventors: Vijayen S. Veerasamy, Jemssy Alvarez
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Patent number: 9142726Abstract: Structures are incorporated into a semiconductor light emitting device which may increase the extraction of light emitted at glancing incidence angles. In some embodiments, the device includes a low index material that directs light away from the metal contacts by total internal reflection. In some embodiments, the device includes extraction features such as cavities in the semiconductor structure which may extract glancing angle light directly, or direct the glancing angle light into smaller incidence angles which are more easily extracted from the device.Type: GrantFiled: July 3, 2012Date of Patent: September 22, 2015Assignee: Philips Lumileds Lighting Company LLCInventors: Aurelien J. F. David, Henry Kwong-Hin Choy, Jonathan J. Wierer, Jr.
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Patent number: 9040328Abstract: A manufacturing method for an LED includes providing a substrate having a buffer layer and a first N-type epitaxial layer, forming a blocking layer on the first N-type epitaxial layer, and etching the blocking layer to form patterned grooves penetrating the blocking layer to the first N-type epitaxial layer. A second N-type epitaxial layer is then formed on the blocking layer to contact the first N-type epitaxial layer; a light emitting layer, a P-type epitaxial layer and a conductive layer are thereafter disposed on the second N-type epitaxial layer; an N-type electrode is formed to electrically connect with the first N-type epitaxial layer, and a P-type electrode is formed on the conductive layer. The N-type electrode is disposed on the blocking layer and separated from the second N-type epitaxial layer and has a portion extending into the patterned grooves to contact the first N-type epitaxial layer.Type: GrantFiled: May 4, 2014Date of Patent: May 26, 2015Assignee: Zhongshan Innocloud Intellectual Property Services Co., Ltd.Inventors: Ya-Wen Lin, Shih-Cheng Huang, Po-Min Tu, Chia-Hung Huang, Shun-Kuei Yang
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Patent number: 9040322Abstract: According to one embodiment, a method is disclosed for manufacturing a semiconductor light emitting element. The method can include bonding a stacked main body of a structural body to a substrate main body. The structural body includes a growth substrate and the stacked main body provided on the growth substrate. The stacked main body includes a first nitride semiconductor film, a light emitting film provided on the first nitride semiconductor film, and a second nitride semiconductor film provided on the light emitting film. The method can include removing the growth substrate. The method can include forming a plurality of stacked bodies. The method can include forming an uneven portion in a surface of a first nitride semiconductor layer. The method can include forming a plurality of the semiconductor light emitting elements.Type: GrantFiled: August 31, 2012Date of Patent: May 26, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Taisuke Sato, Kotaro Zaima, Jumpei Tajima, Naoharu Sugiyama, Shinya Nunoue
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Publication number: 20150137087Abstract: An organic light-emitting element including: a substrate; a light-emitting part above the substrate, the light-emitting part including an organic layer; and banks defining bounds of the organic layer in a direction along a main surface of the substrate. In the organic light-emitting element, in plan view, a surface of the organic layer is longer in a first direction than in a second direction perpendicular to the first direction, and in the second direction, the surface of the organic layer is convex, protruding upwards in a thickness direction of the organic layer, and in the first direction, the surface of the organic layer is concave, protruding downwards in the thickness direction.Type: ApplicationFiled: September 26, 2012Publication date: May 21, 2015Applicant: PANASONIC CORPORATIONInventor: Tsuyoshi Yamamoto
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Patent number: 9034670Abstract: A method (100; 100a; 100b; 100c) for manufacturing a solar cell from a semiconductor substrate (1) of a first conductivity type, the semiconductor substrate having a front surface (2) and a back surface (3). The method includes in a sequence: texturing (102) the front surface to create a textured front surface (2a); creating (103) by diffusion of a dopant of the first conductivity type a first conductivity-type doped layer (2c) in the textured front surface and a back surface field layer (4) of the first conductivity type in the back surface; removing (105; 104a) the first conductivity-type doped layer from the textured front surface by an etching process adapted for retaining texture of the textured front surface; creating (106) a layer of a second conductivity type (6) on the textured front surface by diffusion of a dopant of the second conductivity type into the textured front surface.Type: GrantFiled: August 24, 2010Date of Patent: May 19, 2015Assignee: Stichting Energieonderzoek Centrum NederlandInventors: Paul Cornelis Barton, Ronald Cornelis Gerard Naber, Arno Ferdinand Stassen
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Patent number: 9029177Abstract: An optoelectronic semiconductor chip has a first semiconductor layer sequence which comprises a multiplicity of microdiodes, and a second semiconductor layer sequence which comprises an active region The first semiconductor layer sequence and the second semiconductor layer sequence are based on a nitride compound semiconductor material, the first semiconductor layer sequence is before the first semiconductor layer sequence in the direction of growth, and the microdiodes form an ESD protection for the active region.Type: GrantFiled: December 23, 2010Date of Patent: May 12, 2015Assignee: OSRAM Opto Semiconductors GmbHInventors: Rainer Butendeich, Alexander Walter, Matthias Peter, Tobias Meyer, Tetsuya Taki, Hubert Maiwald
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Patent number: 9012934Abstract: A method of forming a semiconductor layer is provided. The method includes forming a plurality of nanorods on a substrate and forming a lower semiconductor layer on the substrate so as to expose at least portions of the nanorods. The nanorods are removed so as to form voids in the lower semiconductor layer, and an upper semiconductor layer is formed on an upper portion of the lower semiconductor layer and the voids.Type: GrantFiled: August 29, 2013Date of Patent: April 21, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Seong Suk Lee, Ok Hyun Kim, Dong Yul Lee, Dong Ju Lee, Jeong Wook Lee, Heon Ho Lee
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Patent number: 9012953Abstract: A light emitting device and method for making the same is disclosed. The light-emitting device includes an active layer sandwiched between a p-type semiconductor layer and an n-type semiconductor layer. The active layer emits light when holes from the p-type semiconductor layer combine with electrons from the n-type semiconductor layer therein. The active layer includes a number of sub-layers and has a plurality of pits in which the side surfaces of a plurality of the sub-layers are in contact with the p-type semiconductor material such that holes from the p-type semiconductor material are injected into those sub-layers through the exposed side surfaces without passing through another sub-layer. The pits can be formed by utilizing dislocations in the n-type semiconductor layer and etching the active layer using an etching atmosphere in the same chamber used to deposit the semiconductor layers without removing the partially fabricated device.Type: GrantFiled: February 7, 2014Date of Patent: April 21, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Steven Lester, Jeff Ramer, Jun Wu, Ling Zhang
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Patent number: 9006012Abstract: A method of manufacturing an organic light emitting diode display according to an exemplary embodiment of the present invention includes: forming a first electrode on a substrate; forming an insulation layer on the first electrode; etching the insulation layer to expose the first electrode so as to form a pixel defining layer having the same height as the first electrode; forming an organic layer including one or more emission layers on the first electrode of a sub-pixel region defined by the pixel defining layer by applying a laser-induced thermal imaging (LITI) method; and forming a second electrode on the organic layer.Type: GrantFiled: October 18, 2013Date of Patent: April 14, 2015Assignee: Samsung Display Co., Ltd.Inventors: Valeriy Prushinskiy, Min-Soo Kim, Won-Sik Hyun, Heung-Yeol Na, Jin-Won Sun
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Publication number: 20150097209Abstract: A semiconductor device including a Si (110) substrate, a buffer layer, a first type doped semiconductor layer, a light-emitting layer and a second type doped semiconductor layer is provided. The Si (110) substrate has a plurality of trenches. Each trench at least extends along a first direction, and the first direction is parallel to a <1-10> crystal direction of the Si (110) substrate. The buffer layer is located on the Si (110) substrate and exposes the trenches. The first type doped semiconductor layer is located on the buffer layer and covers the trenches. The light-emitting layer is located on the first type doped semiconductor layer. The second type doped semiconductor layer is located on the light-emitting layer. A fabrication method of a semiconductor device is also provided.Type: ApplicationFiled: November 29, 2013Publication date: April 9, 2015Applicant: National Taiwan UniversityInventors: Chih-Chung Yang, Chun-Han Lin, Chia-Ying Su, Horng-Shyang Chen
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Patent number: 9000471Abstract: There is provided a manufacturing method of an LED module including: forming an insulating film on a substrate; forming a first ground pad and a second ground pad separated from each other on the insulating film; forming a first division film that fills a space between the first and second ground pads, a second division film deposited on a surface of the first ground pad, and a third division film deposited on a surface of the second ground pad; forming a first partition layer of a predetermined height on each of the division films; sputtering seed metal to the substrate on which the first partition layer is formed; forming a second partition layer of a predetermined height on the first partition layer; forming a first mirror connected with the first ground pad and a second mirror connected with the second ground pad by performing a metal plating process to the substrate on which the second partition layer is formed; removing the first and second partition layers; connecting a zener diode to the first mirrorType: GrantFiled: March 17, 2014Date of Patent: April 7, 2015Assignee: Daewon Innost Co., Ltd.Inventors: Won Sang Lee, Young Keun Kim
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Patent number: 8995490Abstract: An edge-emitting semiconductor laser diode includes an epitactic semiconductor layer stack and a planarization layer. The semiconductor layer stack includes a main body and a ridge waveguide. The main body includes an active layer for generating electromagnetic radiation. The planarization layer embeds the ridge waveguide such that a surface of the ridge waveguide and a surface of the planarization layer form a flat main surface. A method for producing such a semiconductor laser diode is also disclosed.Type: GrantFiled: September 7, 2011Date of Patent: March 31, 2015Assignee: OSRAM Opto Semiconductors GmbHInventors: Alfred Lell, Christoph Nelz, Christian Rumbolz, Stefan Hartauer
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Publication number: 20150079713Abstract: An LED includes a first electrode, for connecting the LED to a negative electrode of a power supply and a substrate located on the first electrode in which a plurality of contact holes are formed extending through the substrate. The diameter of upper parts of the contact holes is less than the diameter of lower parts of the contact holes, and the contact holes are filled with electrode plugs connecting the first electrode to the LED die. The light emitting device includes the LED, and further includes a susceptor and an LED mounted on the susceptor. The manufacturing method includes forming successively an LED die and a second electrode on a substrate, patterning a back surface of the substrate to form inverted trapezoidal contact holes which expose the LED die, and filling the contact holes with conductive material until the back face of the substrate is covered by the conductive material.Type: ApplicationFiled: November 20, 2014Publication date: March 19, 2015Inventors: Richard Rugin Chang, Deyuan Xiao
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Patent number: 8962363Abstract: Provided is a novel method for forming a groove composed of two smooth inclined surfaces on a surface of a flat plate formed of a nitride semiconductor crystal having an A, C, M-axes. In the present invention, a disk-shaped dicing blade is moved along a direction of the A-axis to form first and second inclined surfaces on the surface of the flat plate. The following mathematical formulae (I)-(III) are satisfied: 45 degrees??b?a?60 degrees (I) 45 degrees??b+a?60 degrees (II), 0 degrees?|a|?7.5 degrees, where angle ?b represents an angle formed between a surface of the edge and a radial direction of the dicing blade in a cross-sectional view which includes the M-axis and the C-axis. The angle a represents an angle formed between the principal surface and the M-axis.Type: GrantFiled: June 6, 2014Date of Patent: February 24, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Akira Inoue, Toshiyuki Fujita, Toshiya Yokogawa
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Publication number: 20150043603Abstract: Provided is a high-output light-emitting device capable of emitting a light beam in a single mode. The light-emitting device includes a laminate structure body configured by laminating, in order, a first compound semiconductor layer, an active layer, and a second compound semiconductor layer on a base substrate, a second electrode, and a first electrode. The first compound semiconductor layer has a laminate structure including a first cladding layer and a first light guide layer in order from the base substrate, and the laminate structure body has a ridge stripe structure configured of the second compound semiconductor layer, the active layer, and a portion in a thickness direction of the first light guide layer. Provided that a thickness of the first light guide layer is t1, and a thickness of the portion configuring the ridge stripe structure of the first light guide layer is t1?, 6×10?7 m<t1 and 0(m)<t1??0.5·t1 are satisfied.Type: ApplicationFiled: September 4, 2012Publication date: February 12, 2015Inventors: Masaru Kuramoto, Rintaro Koda, Hideki Watanabe
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Patent number: 8945960Abstract: An optical device wafer has a plurality of optical devices formed on a front side and a plurality of crossing division lines for partitioning the optical devices. Each optical device has electrodes formed on the front side. A processing method includes: forming a groove on the front side of the wafer along each division line, the groove having a depth reaching a finished thickness; of forming a nonconductive reflective film on the front side of the wafer to thereby form the reflective film on at least the side surfaces of the groove; removing the reflective film formed on the electrodes to thereby expose the electrodes; and grinding a back side of the wafer to thereby reduce the thickness to the finished thickness until the groove is exposed to the back side of the wafer to divide the wafer into individual optical device chips.Type: GrantFiled: June 4, 2013Date of Patent: February 3, 2015Assignee: Disco CorporationInventor: Kazuma Sekiya
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Patent number: 8946738Abstract: According to one embodiment, a light emitting device includes a semiconductor layer, a p-side electrode, an n-side electrode, a first insulating layer, a p-side interconnect layer, an n-side interconnect layer, and a second insulating layer. The portion of the second p-side interconnect layer has the L-shaped cross section being configured to include a p-side external terminal exposed from the first insulating layer and the second insulating layer at a third surface having a plane orientation different from the first surface and the second surface. The portion of the second n-side interconnect layer has the L-shaped cross section being configured to include an n-side external terminal exposed from the first insulating layer and the second insulating layer at the third surface.Type: GrantFiled: August 7, 2013Date of Patent: February 3, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Akihiro Kojima, Yoshiaki Sugizaki, Yosuke Akimoto, Kazuhito Higuchi, Susumu Obata
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Patent number: 8945963Abstract: An optical device processing method including: a groove forming step of forming a plurality of grooves on a front side of a sapphire substrate; a film forming step of forming an epitaxial film on the front side of the sapphire substrate after performing the groove forming step, thereby forming a plurality of optical devices and a plurality of crossing division lines for partitioning the optical devices; and a dividing step of dividing the sapphire substrate with the epitaxial film along the division lines after performing the film forming step, thereby obtaining a plurality of individual optical device chips.Type: GrantFiled: June 4, 2013Date of Patent: February 3, 2015Assignee: Disco CorporationInventor: Kazuma Sekiya
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Publication number: 20150014626Abstract: A semiconductor light emitting element includes a substrate and a stacked body. The stacked body is aligned with the substrate. The stacked body includes first and second semiconductor layers, a light emitting layer, and first and second electrodes. The first semiconductor layer has a first face including first and second portions. The first portion is provided with a plurality of convex portions. The second portion is aligned with the first portion. The second semiconductor layer is provided facing the second portion. The light emitting layer is provided between the second portion and the second semiconductor layer. The second semiconductor layer is disposed between the second electrode and the light emitting layer. An interval of each of the convex portions is no less than 0.5 times and no more than 4 times a wavelength of a light emitted from the light emitting layer.Type: ApplicationFiled: July 3, 2014Publication date: January 15, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Satoshi MITSUGI, Shinji Yamada, Shinya Nunoue
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Publication number: 20150014644Abstract: A display device includes a bottom member, a display panel, a top member and a groove region. The display panel is disposed on the bottom member, and includes an organic layer. The top member is disposed on the display panel. The groove region is formed by removing at least one of the top member or the bottom member at a bending region of the display device.Type: ApplicationFiled: December 23, 2013Publication date: January 15, 2015Applicant: Samsung Display Co., Ltd.Inventors: Jun Namkung, Kwang-Hyeok Kim, Soon-Ryong Park, Jung-Ho So, Chul-Woo Jeong
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Patent number: 8932888Abstract: A method of applying a conversion means to an optoelectronic semiconductor chip includes preparing the optoelectronic semiconductor chip having a main radiation face, preparing the conversion means, the conversion means being applied to a main carrier face of a carrier, arranging the conversion means such that it faces the main radiation face and has a spacing relative to the main radiation face, and releasing the conversion means from the carrier and applying the conversion means to the main radiation face by irradiation and heating of an absorber constituent of the conversion means and/or of a release layer located between the conversion means and the carrier with a pulsed laser radiation which passes through the carrier.Type: GrantFiled: September 6, 2011Date of Patent: January 13, 2015Assignee: OSRAM Opto Semiconductors GmbHInventor: Ralph Wagner
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Patent number: 8921846Abstract: The present invention aims at providing an organic EL device that emits light by an alternating current, has a simple structure and provides little increase of production processes, while downsizing an overall configuration and a simplifying a method for producing said organic EL device. The organic EL device includes a power feeding part and an organic-EL-element forming part. The organic-EL-element forming part includes a plurality of unit EL elements formed on a substrate. There is provided a plurality of series-connected parts each formed by a plurality of the unit EL elements that are electrically connected in series in a forward direction. A plurality of the series-connected parts are electrically connected to the power feeding part in parallel. The series-connected parts that are connected in parallel include a series-connected part that is connected to the power feeding part so as to have a reverse polarity.Type: GrantFiled: January 4, 2012Date of Patent: December 30, 2014Assignee: Kaneka CorporationInventors: Akira Nishikawa, Shigeru Ayukawa, Hideo Yamagishi
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Patent number: 8916873Abstract: A photodetector includes a semiconductor substrate having an irradiation zone configured to generate charge carriers having opposite charge carrier types in response to an irradiation of the semiconductor substrate. The photodetector further includes an inversion zone generator configured to operate in at least two operating states to generate different inversion zones within the substrate, wherein a first inversion zone generated in a first operating state differs from a second inversion zone generated in a second operating state, and wherein the first inversion zone and the second inversion zone have different extensions in the semiconductor substrate. A corresponding method for manufacturing a photodetector and a method for determining a spectral characteristic of an irradiation are also described.Type: GrantFiled: September 14, 2011Date of Patent: December 23, 2014Assignee: Infineon Technologies AGInventor: Thoralf Kautzsch
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Patent number: 8916405Abstract: Carbon-based light emitting diodes (LEDs) and techniques for the fabrication thereof are provided. In one aspect, a LED is provided. The LED includes a substrate; an insulator layer on the substrate; a first bottom gate and a second bottom gate embedded in the insulator layer; a gate dielectric on the first bottom gate and the second bottom gate; a carbon material on the gate dielectric over the first bottom gate and the second bottom gate, wherein the carbon material serves as a channel region of the LED; and metal source and drain contacts to the carbon material.Type: GrantFiled: October 11, 2011Date of Patent: December 23, 2014Assignee: International Business Machines CorporationInventors: Dechao Guo, Shu-Jen Han, Keith Kwong Hon Wong, Jun Yuan
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Patent number: 8912557Abstract: An LED includes a substrate, a first n-type GaN layer, a connecting layer, a second n-type GaN layer, a light emitting layer, and a p-type GaN layer. The first n-type GaN layer, the connecting layer, and the second n-type GaN layer are formed on the substrate in sequence. The connecting layer is etchable by alkaline solution, and a bottom surface of the second n-type GaN layer facing towards the connecting layer has a roughed exposed portion. The GaN on the bottom surface of the second n-type GaN layer is N-face GaN. A top surface of the second n-type GaN layer facing away from the connecting layer includes a first area and a second area. The light emitting layer and the p-type GaN layer are formed on the first area of the top surface of the second n-type GaN layer in sequence.Type: GrantFiled: July 1, 2013Date of Patent: December 16, 2014Assignee: Advanced Optoelectronic Technology, Inc.Inventors: Tzu-Chien Hung, Chia-Hui Shen
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Publication number: 20140361280Abstract: An organic EL device with which occurrence of leakage current between electrodes can be prevented includes: a substrate; a first electrode layer separating groove that separates a first electrode layer into small pieces; a function layer separating groove that separates a function layer into small light emitting regions; and a unit light emitting element separating groove extending from a second electrode layer to the function layer and separating the second electrode layer into small pieces. One of the small pieces of the first electrode layer, one of the small light emitting regions, and one of the small pieces of the second electrode layer structure a unit organic EL element, electrically connected in series. The average width of the unit light emitting element separating groove at the second electrode layer is wider than the average width of the unit light emitting element separating groove at the light emitting portion separating layer.Type: ApplicationFiled: December 20, 2012Publication date: December 11, 2014Applicant: KANEKA CORPORATIONInventors: Eiji Kuribe, Jumpei Suzuki
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Patent number: 8906726Abstract: A method for making light emitting diode, the method includes the following steps. First, a substrate having an epitaxial growth surface is provided. Second, a carbon nanotube layer is suspended above the epitaxial growth surface. Third, a first semiconductor layer, an active layer and a second semiconductor layer are grown on the epitaxial growth surface in that order, wherein the first semiconductor layer includes a buffer layer, an intrinsic semiconductor layer, and a doped semiconductor layer stacked in that order. Fourth, the doped semiconductor layer is exposed by removing the substrate, the buffer layer, and the intrinsic semiconductor layer. Fifth, a first electrode is prepared on the first semiconductor layer and a second electrode is prepared on the second semiconductor layer.Type: GrantFiled: May 27, 2013Date of Patent: December 9, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yang Wei, Shou-Shan Fan
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Publication number: 20140350375Abstract: An optrode may provide a cylindrical substrate two or more electrodes deposited said cylindrical substrate. The cylindrical substrate and electrodes may be coated by an insulating layer with openings or vias over certain portions of the electrodes that may provide a contact for the neural probe or may be utilized to connect lead lines. Manufacturing of an optrode may utilize a jig that secures a cylindrical substrate coated by a conductive material and a resist. A first mask may be positioned in an opening provided by the jig, and the cylindrical substrate may be exposed ions or neutral particles to define one or more electrode patterns. After regions of the resist and conductive material are removed to form the electrodes, a second mask may be utilized to define vias regions in which portions of the electrodes are exposed and uncoated by an insulating layer.Type: ApplicationFiled: May 27, 2014Publication date: November 27, 2014Applicants: University of Houston, Vanderbilt UniversityInventors: John C. Wolfe, Mufaddal Gheewala, Wei-Chuan Shih, Gopathy Purushothaman
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Patent number: 8895400Abstract: A semiconductor device includes a semiconductor substrate having a cell region and a peripheral circuit region defined therein. A buried word line is disposed in the substrate in the cell region and has a top surface lower than top surfaces of cell active regions in the cell region. A gate line is disposed on the substrate in the peripheral circuit region. A word line interconnect is disposed in the substrate in the peripheral circuit region, the word line interconnect including a first portion contacting the buried word line and having a top surface lower than a top surfaces of the cell active regions and a second portion that is overlapped by and in contact with the gate line.Type: GrantFiled: May 17, 2012Date of Patent: November 25, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Hyeoung-Won Seo, Yun-Gi Kim, Young-Woong Son, Bong-Soo Kim
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Publication number: 20140339959Abstract: A thin film bulk acoustic resonator and a method of manufacturing the same is disclosed. The thin film bulk acoustic resonator includes an acoustic resonator including a first electrode, a second electrode, and a piezoelectric layer disposed between the first electrode and the second electrode; an air gap disposed below the acoustic resonator and above a substrate to reflect the acoustic wave; and an anchor disposed on each of both surfaces of the air gap and having the same thickness as the air gap.Type: ApplicationFiled: June 7, 2012Publication date: November 20, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Moon Chul Lee, In Sang Song, Duck Hwan Kim, Chul Soo Kim, Sang Uk Son, Jea Shik Shin, Ho Soo Park, Jing Cui