Electrical Contact Or Lead (e.g., Lead Frame) (epo) Patents (Class 257/E33.066)
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Patent number: 8421112Abstract: Disclosed are a light emitting device and a light emitting device package having the same. The light emitting device includes a light emitting structure including a first conductive semiconductor layer, an active layer under the first conductive semiconductor layer, and a second conductive semiconductor layer under the active layer; a first electrode layer under the second conductive semiconductor layer; an electrode including a top surface making contact with a part of a bottom surface of the first conductive semiconductor layer; and an insulating member for covering an outer peripheral surface of the electrode, wherein a part of the insulating member extends into a region between the second conductive semiconductor layer and the first electrode layer from a bottom surface of the electrode.Type: GrantFiled: January 7, 2011Date of Patent: April 16, 2013Assignee: LG Innotek Co., Ltd.Inventors: Hwan Hee Jeong, Sang Youl Lee, Ji Hyung Moon, June O Song, Kwang Ki Choi
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Publication number: 20130087780Abstract: A group III nitride semiconductor light emitting diode is revealed. A layered structure composed of group III nitrides is formed on the substrate through epitaxy growth of a hexagonal wurtzite crystal structure. The layered structure includes a n-type semiconductor layer, a light emitting layer on the n-type semiconductor layer, and a p-type semiconductor layer on the light emitting layer. A first electrode metal pad is formed on the p-type semiconductor layer and a second electrode metal pad on the n-type semiconductor layer. A direction from the first electrode metal pad to the second electrode metal pad is the same with that of C-axis [0001] of the hexagonal wurtzite crystal structure so as to speed up the movement of electron-hole and improve the combination efficiency of electron-hole by the electric field along the direction of C-axis [0001] in the hexagonal wurtzite crystal structure.Type: ApplicationFiled: October 7, 2011Publication date: April 11, 2013Applicant: SOUTHERN TAIWAN UNIVERSITY OF TECHNOLOGYInventor: YU-ZUNG CHIOU
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Publication number: 20130089938Abstract: A method for making light emitting diode is provided. The method includes following steps. A light emitting diode chip is provided, wherein the light emitting diode chip comprises a first semiconductor layer, an active layer and a second semiconductor layers stacked together in that order. A patterned mask layer is located on a surface of the first semiconductor layer, wherein the patterned mask layer includes a number of bar-shaped protruding structures aligned side by side, and a slot is defined between each two adjacent protruding structures to expose a portion of the first semiconductor layer. The exposed portion of the first semiconductor layer is etched to form a protruding pair. A number of M-shaped three-dimensional nano-structures are formed by removing the mask layer. A first electrode is electrically connected with the first semiconductor layer. A second electrode is electrically connected with the second semiconductor layer.Type: ApplicationFiled: December 29, 2011Publication date: April 11, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: ZHEN-DONG ZHU, QUN-QING LI, SHOU-SHAN FAN
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Publication number: 20130087812Abstract: A light-emitting device having at least one spacer located at a bottom surface is disclosed. In two other embodiments, an electronic display system and an electronic system having such light-emitting device are disclosed. The light-emitting device comprises a plurality of leads, a light source die, and a body. The body encapsulates a portion of the plurality of leads and the light source die. The body has a least one side surface and a bottom surface. The at least one spacer is located at the bottom surface. In use, the light-emitting device is attached to a top surface of a substrate. The spacer is configured to create an air vent between the bottom surface and the top surface of the substrate when the light-emitting device is attached to, and the spacer is in contact with the substrate.Type: ApplicationFiled: October 5, 2011Publication date: April 11, 2013Applicant: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Yi Feng Hwang, Yin Har Cheow
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Patent number: 8415699Abstract: Disclosed are a light emitting device, a light emitting device package, and an illumination system. The light emitting device includes a substrate; a light emitting structure layer including a first conductive type semiconductor layer formed on the substrate and having first and second upper surfaces, in which the second upper surface is closer to the substrate than the first upper surface, an active layer on the first conductive type semiconductor layer, and a second conductive type semiconductor layer on the active layer; a second electrode on the second conductive type semiconductor layer; and at least one first electrode extending at least from the second upper surface of the first conductive type semiconductor layer to a lower surface of the substrate by passing through the substrate.Type: GrantFiled: January 11, 2011Date of Patent: April 9, 2013Assignee: LG Innotek Co., Ltd.Inventors: Sung Kyoon Kim, Hee Young Beom, Woo Sik Lim, Min Gyu Na
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Patent number: 8415241Abstract: A silicon carbide substrate having a substrate surface is prepared. An insulating film is formed to cover a part of the substrate surface. A contact electrode is formed on the substrate surface, so as to be in contact with the insulating film. The contact electrode contains Al, Ti, and Si atoms. The contact electrode includes an alloy film made of an alloy containing Al atoms and at least any of Si atoms and Ti atoms. The contact electrode is annealed such that the silicon carbide substrate and the contact electrode establish ohmic connection with each other. Thus, in a case where a contact electrode having Al atoms is employed, insulation reliability of the insulating film can be improved.Type: GrantFiled: January 12, 2012Date of Patent: April 9, 2013Assignee: Sumitomo Electric Industries, Ltd.Inventor: Shunsuke Yamada
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Patent number: 8415704Abstract: A close-packed array of light emitting diodes includes a nonconductive substrate having a plurality of elongate channels extending therethrough from a first side to a second side, where each of the elongate channels in at least a portion of the substrate includes a conductive rod therein. The conductive rods have a density over the substrate of at least about 1,000 rods per square centimeter and include first conductive rods and second conductive rods. The close-packed array further includes a plurality of light emitting diodes on the first side of the substrate, where each light emitting diode is in physical contact with at least one first conductive rod and in electrical contact with at least one second conductive rod.Type: GrantFiled: September 22, 2010Date of Patent: April 9, 2013Assignee: UT-Battelle, LLCInventors: Ilia N. Ivanov, John T. Simpson
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Publication number: 20130082298Abstract: An example includes subject matter (such as an apparatus) comprising a planar substrate including a first surface that is planar, at least one bare light emitting diode (“LED”) die coupled to the substrate and conductive ink electrically coupling the at least one bare LED die, wherein the conductive ink is disposed on the substrate and extends onto a surface of the LED that is out-of-plane from the first surface.Type: ApplicationFiled: June 8, 2012Publication date: April 4, 2013Applicant: Heilux, LLCInventors: Aaron J. Golle, John Golle, Walter J. Paciorek
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Patent number: 8410515Abstract: Solid state lighting (“SSL”) devices with improved contacts and associated methods of manufacturing are disclosed herein. In one embodiment, an SSL device includes a first semiconductor material, a second semiconductor material spaced apart from the first semiconductor material, and an active region between the first and second semiconductor materials. The SSL device also includes an insulative material on the first semiconductor material, the insulative material including a plurality of openings having a size of about 1 nm to about 20 ?m, and a conductive material having discrete portions in the individual openings.Type: GrantFiled: August 31, 2010Date of Patent: April 2, 2013Assignee: Micron Technology, Inc.Inventor: Martin F. Schubert
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Patent number: 8410516Abstract: A light emitting diode (LED) package includes a substrate, a first LED chip and a second LED chip. The substrate includes first to fourth electrodes, and an interconnection electrode. A mounting area is defined at center of a top surface of the substrate. The first to fourth electrodes are respectively in four corners of the substrate out of the mounting area. The first interconnection electrode is embedded in the substrate to electrically connect the first and the third electrodes. The first LED chip and the second LED chip are arranged in the mounting area. Each LED chip includes an anode pad and a cathode pad. The first to fourth electrodes are respectively connected to the four pads of the first and the second LED chips via a plurality of metal wires, and no metal wire connection is formed between the first and the second LED chips.Type: GrantFiled: April 8, 2011Date of Patent: April 2, 2013Assignee: Advanced Optoelectronic Technology, Inc.Inventors: Chao-Hsiung Chang, Pi-Chiang Hu
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Patent number: 8409922Abstract: A semiconductor device has a substrate with a plurality of conductive vias formed through the substrate and first conductive layer formed over the substrate. A first semiconductor die is mounted over the substrate. A second semiconductor die can be mounted over the first semiconductor die. A leadframe interposer has a base plate and a plurality of base leads extending from the base plate. An etch-resistant conductive layer is formed over a surface of the base plate opposite the base leads. The leadframe is mounted to the substrate over the first semiconductor die. An encapsulant is deposited over the substrate and first semiconductor die. The base plate is removed while retaining the etch-resistant conductive layer and portion of the base plate opposite the base leads to electrically isolate the base leads. An interconnect structure is formed over a surface of the substrate opposite the base leads.Type: GrantFiled: September 14, 2010Date of Patent: April 2, 2013Assignee: STATS ChipPAC, Ltd.Inventors: Zigmund R. Camacho, Dioscoro A. Merilo, Henry D. Bathan, Emmanuel A. Espiritu
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Publication number: 20130076804Abstract: A light emitting device includes: a wiring including an AuGeNi layer; and a semiconductor light emitting element bonded to the surface of the AuGeNi layer with the aid of intermolecular force, and electrically connected to the wiring.Type: ApplicationFiled: September 27, 2012Publication date: March 28, 2013Applicant: OKI DATA CORPORATIONInventor: Oki Data Corporation
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Publication number: 20130075780Abstract: Disclosed are a radiation heat dissipation LED structure and a manufacturing method thereof. The radiation heat dissipation LED structure includes a sapphire substrate, an LED epitaxy layer, a base substrate, a radiation heat dissipation film, and a thermally conductive binding layer provided between the sapphire substrate and the radiation heat dissipation film to bind the sapphire substrate and the base substrate. The radiation heat dissipation film consists of a mixture of metal and nonmetal. The surface of the film has a microscopic structure with crystal, which has high efficiency of heat dissipation and can fast transfer the heat generated by the LED epitaxy layer outwards through the base substrate by thermal radiation. Therefore, the working temperature of the LED epitaxy layer is greatly reduced so as to improve the efficiency of light emitting and the lifetime.Type: ApplicationFiled: May 21, 2011Publication date: March 28, 2013Applicant: JINGDEZHEN FARED TECHNOLOGY CO., LTD.Inventor: Jeong-Shiun Chen
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Publication number: 20130069087Abstract: A multiple-layer wiring substrate having a first conductive layer; an interlayer insulating layer; and a second conductive layer is disclosed, wherein the interlayer insulating layer includes a material whose surface energy is changed by receiving energy, and has a first region which does not include a contact hole and a second region which is formed such that its surface energy is higher than that of the first region, wherein a region within the contact hole of the first conductive layer has surface energy which is higher than surface energy of the second region of the interlayer insulating layer, and wherein the second conductive layer is formed by laminating, wherein the second conductive layer is in contact with the second region of the interlayer insulating layer along the second region, and is connected to the first conductive layer via the contact hole.Type: ApplicationFiled: September 13, 2012Publication date: March 21, 2013Applicant: RICOH COMPANY, LTD.Inventors: Atsushi ONODERA, Koei Suzuki, Hiroshi Miura, Takanori Tano
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Publication number: 20130069093Abstract: An optoelectronic device includes a conductive substrate; a polymer filled groove configured to separate the conductive substrate into a first semiconductor substrate and a second semiconductor substrate; a first front side electrode on the first semiconductor substrate and a second front side electrode on the second semiconductor substrate; and a light emitting diode (LED) chip on the first semiconductor substrate in electrical communication with the first front side electrode and with the second front side electrode.Type: ApplicationFiled: August 28, 2012Publication date: March 21, 2013Inventors: WEN-HUANG LIU, YUNG WEI CHEN
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Patent number: 8399968Abstract: A non-leaded integrated circuit package system is provided providing a die paddle of a lead frame, forming a dual row of terminals including outer terminal pads and inner terminal pads, and selectively fusing an extension between the die paddle and instances of the inner terminal pads.Type: GrantFiled: November 18, 2005Date of Patent: March 19, 2013Assignee: Stats Chippac Ltd.Inventors: Jeffrey D. Punzalan, Henry D. Bathan, Il Kwon Shim
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Patent number: 8399904Abstract: Provided is a light emitting device. The light emitting device includes a plurality of metal layers including first and second metal layers spaced from each other, a first insulation film disposed on a top surface of the plurality of metal layers, the first insulation film having a width wider than an interval between the plurality of metal layers, a light emitting chip disposed on the first metal layer of the plurality of metal layers, and a resin layer disposed on the first metal layer, the first insulation film, and the light emitting chip. The first metal layer includes a first base part dispose on the light emitting chip and a first side part bent from the first base part on an outer portion of the first base part.Type: GrantFiled: August 9, 2011Date of Patent: March 19, 2013Assignee: LG Innotek Co., Ltd.Inventor: GunKyo Lee
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Patent number: 8399902Abstract: A light emitting device includes a light emitting diode chip, and a first lead terminal in which a bottom portion including a mounting region for the light emitting diode chip is formed, and a side wall continuing to the bottom portion and having an inner surface serving as a reflecting surface for light emitted from the light emitting diode chip is continuously formed. Further, the light emitting device includes a second lead terminal provided to be spaced from the first lead terminal. Furthermore, the light emitting device includes a resin portion which supports the first lead terminal and the second lead terminal, and in which a cavity exposing a portion of the second lead terminal and the mounting region in the first lead terminal is formed.Type: GrantFiled: August 5, 2010Date of Patent: March 19, 2013Assignee: Sharp Kabushiki KaishaInventors: Takahiro Nemoto, Toshio Hata
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Patent number: 8399895Abstract: Provided is a semiconductor light emitting device which includes a number of hexagon-shaped semiconductor light emitting elements formed two-dimensionally, and in which the positive electrodes and the negative electrodes are formed on its light outputting surface side lest the light outputting efficiency should decrease. A mask 11 for selective growth is formed on a substrate 1 for growth, and an AlN buffer layer 2 is formed in regions from each of which a part of the mask 11 for selective growth is removed. An undoped GaN layer 3, an n-type GaN layer 4, an active layer 5 and a p-type GaN layer 6 are sequentially stacked on the AlN buffer layer 2. An isolation groove A for isolating the elements from one another is formed.Type: GrantFiled: January 9, 2009Date of Patent: March 19, 2013Assignee: Rohm Co., Ltd.Inventor: Yukio Shakuda
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Publication number: 20130062613Abstract: According to one embodiment, a light emitting device includes a first lead, a light emitting element, a second lead and a molded body. The light emitting element is fixed on the first lead. The second lead is provided away from the first lead and electrically connected to the light emitting element via a metal wire. The, molded body made of a sealing resin covers the light emitting element, end portions of the first lead and the second lead, the light emitting element being fixed on the end portion of the first read, and the metal wire being bonded on the end portion of the second lead. The first groove is provided between first and second portions in a front surface of the second lead, the first portion being in contact with an outer edge of the molded body and the metal wire being bonded on the second portion.Type: ApplicationFiled: March 28, 2012Publication date: March 14, 2013Applicant: Kabushiki Kaisha ToshibaInventors: Atsushi Takeshita, Yuichi Ikedo, Tetsuya Muranaka
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Publication number: 20130062640Abstract: A light emitting diode (LED) package includes a substrate and a light emitting diode (LED) die on the substrate configured to emit electromagnetic radiation in a first spectral region. The (LED) package also includes a dielectric layer on the (LED) die and a wavelength conversion member on the dielectric layer configured to convert the electromagnetic radiation in the first spectral region to electromagnetic radiation in a second spectral region. The (LED) package also includes an interconnect comprising a conductive trace on the wavelength conversion member and on the dielectric layer in electrical contact with a die contact on the (LED) die and with a conductor on the substrate, and a transparent dome configured as a lens encapsulating the (LED) die.Type: ApplicationFiled: September 12, 2011Publication date: March 14, 2013Applicant: SEMILEDS OPTOELECTRONICS CO., LTD.Inventors: JUI- KANG YEN, TRUNG TRI DOAN
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Publication number: 20130062641Abstract: A LED lamp is disclosed which has a plurality of light unit, each of the light unit has at least one flat metal lead for heat dissipation and the lower part of the metal lead is mounted on a heat sink for a further heat dissipation.Type: ApplicationFiled: September 13, 2011Publication date: March 14, 2013Applicant: UNILED LIGHTING TAIWAN INC.Inventors: Ming-Te LIN, Ming-Yao LIN, Heng QIU
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Publication number: 20130062658Abstract: A light-emitting device comprises a substrate, a light-emitting layer, a wire formed on the substrate and supplying electric power to the light-emitting layer; a transition metal oxide layer formed on the substrate and over the wire; a bank formed on the transition metal oxide layer defining an opening over the wire; an interception layer formed on a portion of the transition metal oxide layer that is exposed through the opening and intercepting migrating fluorine; an organic layer formed on the interception layer and doped with an alkali metal; and an electrode formed on the organic layer, electrically connected to the wire via the organic layer, the interception layer, and the transition metal oxide layer, and providing the electric power supplied by the wire to the organic layer.Type: ApplicationFiled: November 8, 2012Publication date: March 14, 2013Applicant: PANASONIC CORPORATIONInventor: PANASONIC CORPORATION
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Patent number: 8395172Abstract: According to one embodiment, a light emitting device includes a light emitting layer, a first conductivity type layer, a first electrode, a second conductivity type layer, a current blocking layer and a second electrode. The first conductivity type layer is provided on the light emitting layer. The first electrode is provided on the first conductivity type layer. The second conductivity type layer is provided under the light emitting layer. The current blocking layer is provided in contact with a partial region of a surface of the second conductivity type layer, and has an outer edge protruding from an outer edge of the first electrode. The second electrode is in contact with a surface of the current blocking layer on opposite side from the second conductivity type layer and a region of the surface of the second conductivity type layer not in contact with the current blocking layer.Type: GrantFiled: December 6, 2010Date of Patent: March 12, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Akira Tanaka, Katsufumi Kondo, Tokuhiko Matsunaga
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Patent number: 8395181Abstract: A light emitting device includes a package body, a light emitting diode, a transparent resin material, and a wire. The package body includes a bottom part and a side part. The bottom part includes a first electrode and a second electrode electrically connecting the upper surface and the bottom surface of the bottom part, respectively. The side part includes an upper surface including a trench and a bottom surface being in contact with the upper surface of the bottom part, wherein the upper surface of the bottom part is lower than the upper surface of the side part such that the package body includes a cavity surrounded by the side part, and the bottom surface of the bottom part includes a second opened portion that divides the first electrode and the second electrode, and wherein a portion of the transparent resin material is disposed inside of the trench.Type: GrantFiled: September 21, 2011Date of Patent: March 12, 2013Assignee: LG Innotek Co., Ltd.Inventor: Bum Chul Cho
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Patent number: 8395180Abstract: Provided are a light emitting device package and a lighting system. The light emitting device package includes a light emitting device chip, at least one wire, and an encapsulating material. The light emitting device chip includes a first conductive type semiconductor layer, a second conductive type semiconductor layer on the first conductive type semiconductor layer, and an active layer between the first and second conductive type semiconductor layers. The wire is on the light emitting device chip. The encapsulating material is on the light emitting device chip out of the wire, and includes a phosphor. The wire is perpendicular to an upper surface of the light emitting device chip, at least up to a height of the encapsulating material.Type: GrantFiled: October 7, 2010Date of Patent: March 12, 2013Assignee: LG Innotek Co., Ltd.Inventor: Jung Ha Hwang
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Patent number: 8394675Abstract: A method of manufacturing an LED package includes mounting a large panel frame/substrate (LPF/S) having a substantially square shape to a ring. The LPF/S includes a plurality of die pads and a corresponding plurality of leads arranged in a matrix pattern. Each of the die pads includes a planar chip attach surface. An LED chip is attached to the planar chip attach surface of each of the die pads. An encapsulant material is applied overlaying the LED chips and at least a part of the LPF/S. Each die pad and corresponding leads are separated from the LPF/S to form individual LED packages. The steps of attaching the LED chips and applying the encapsulant material are performed while the LPF/S is mounted to the ring.Type: GrantFiled: May 26, 2011Date of Patent: March 12, 2013Assignee: Carsem (M) Sdn. Bhd.Inventors: Yong Lam Wai, Chan Boon Meng, Phang Hon Keat
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Publication number: 20130056787Abstract: A light emitting device includes a package equipped on a front face with a window for installing a light emitting element, and outer lead electrodes that protrude from a bottom face of the package. The package has, on the bottom face, two side face convex components provided on the side face sides and a center convex component provided at a center. The outer lead electrodes are housed in a concave components defined by the side face convex components and the center convex component. The side face convex component has groove provided on the side face.Type: ApplicationFiled: October 31, 2012Publication date: March 7, 2013Applicant: NICHIA CORPORATIONInventor: Saiki YAMAMOTO
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Publication number: 20130056788Abstract: An object of the present invention is to provide a package from which a metal wiring and the like are difficult to be detached even when heat is generated from a semiconductor light-emitting element. This object is achieved with a package for a semiconductor light-emitting device comprising at least a molded resin containing (A) a SiH-containing polyorganosiloxane and (B) a filler, wherein an amount of SiH existing in the molded resin, after a heat treatment thereof at 200° C. for 10 minutes, is 20 to 65 ?mol/g.Type: ApplicationFiled: October 31, 2012Publication date: March 7, 2013Applicant: MITSUBISHI CHEMICAL CORPORATIONInventor: MITSUBISHI CHEMICAL CORPORATION
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Publication number: 20130056780Abstract: A light emitting device, comprising: a package which is formed of a resin and has a recess which is provided with a bottom face and two pairs of opposite inner walls surrounding the bottom face, the package having two pairs of opposite side walls made of the inner walls and corresponding outer walls; a lead frame exposed at the bottom face; a light emitting element which is provided on the lead frame; and a sealing resin provided in the recess for sealing the light emitting element, wherein the lead frame has a bottom portion and a reflector portion exposed along one of the pair of opposite inner walls, and a first angle between the reflector portion and the bottom face is greater than a second angle between another one of the pair of opposite inner walls which is opposite to the reflector portion and the bottom face, is provided.Type: ApplicationFiled: August 31, 2012Publication date: March 7, 2013Applicant: NICHIA CORPORATIONInventor: Hiroshi KONO
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Publication number: 20130056769Abstract: A light emitting diode (LED) module and a display device adopting the same LED module are provided. The LED module includes a circuit substrate, a LED chip, a connector and a conductive line. The LED chip has at least three pins, and the LED chip is fixed on the circuit substrate through the pins, wherein one of the pins is defined as a no connection (NC) pin. The connector includes a non-conductive housing, at least one fixing pin and a conductor. The fixing pin is connected to the non-conductive housing, and the non-conductive housing is fixed on the circuit substrate through the said at least one fixing pin. A part of the non-conductive housing is covered with the conductor. The conductive line is disposed on the circuit substrate and is electrically connected between the conductor and the NC pin.Type: ApplicationFiled: April 3, 2012Publication date: March 7, 2013Applicant: AU Optronics Corp.Inventors: Sheng-Wen CHEN, Wen-Kuei Liu, Yu-Min Hung, Tsai-Fen Lee, Yung-Hsiang Tsao
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Patent number: 8390018Abstract: A nitride-based semiconductor light emitting device with improved characteristics of ohmic contact to an n-electrode and a method of fabricating the same are provided. The nitride-based semiconductor light emitting device includes an n-electrode, a p-electrode, an n-type compound semiconductor layer, and an active layer and a p-type compound semiconductor layer formed between the n- and p-electrodes. The n-electrode includes: a first electrode layer formed of at least one element selected from the group consisting of Pd, Pt, Ni, Co, Rh, Ir, Fe, Ru, Os, Cu, Ag, and Au; and a second electrode layer formed on the first electrode layer using a conductive material containing at least one element selected from the group consisting of Ti, V, Cr, Zr, Nb, Hf, Ta, Mo, W, Re, Ir, Al, In, Pb, Ni, Rh, Ru, Os, and Au.Type: GrantFiled: June 8, 2006Date of Patent: March 5, 2013Assignee: Samsung Electronics Co., Ltd.Inventor: Tae-hoon Jang
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Patent number: 8390102Abstract: An optoisolator leadframe assembly includes: an emitter leadframe part including a first rail and a plurality of emitter leadframe units, each rail including two rows of emitter leadframes, each having a die-mounting pad; and a receiver leadframe part including a second rail and a plurality of receiver leadframe units, each including two rows of receiver leadframes, each having a die-mounting pad. The die-mounting pads of the emitter leadframes of each row of each of the emitter leadframe units are respectively aligned with and spaced apart from the die-mounting pads of the receiver leadframes of an adjacent row of an adjacent one of the receiver leadframe units. Each of the emitter and receiver leadframe parts is a single piece.Type: GrantFiled: May 21, 2008Date of Patent: March 5, 2013Assignees: Silitek Electronic (Guangzhou) Co., Ltd., Lite-On Technology Corp.Inventors: Cheng-Hong Su, Chih-Hung Tzeng
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Publication number: 20130049058Abstract: An LED module A1 includes a first lead 1 with a mount surface 12a at a die-bonding portion 12, a second lead 2 with a wire-bonding portion 22 and having a thickness direction corresponding to that of the lead 1, and an LED chip 3 on the mount surface 12a, with a first electrode terminal 31 connected to the first lead 1, and a second electrode terminal 32 connected to the second lead 2. A support member 4 supports the leads 1, 2, The second terminal 32 is on a thickness-side surface of the LED chip 3 and connected to the wire-bonding portico 22 with a wire 61. The support member 4 includes a protective portion 42 covering a thickness-side surface of the first lead 1 with the mount surface 12a exposed. The die-bonding portion 12 bulges, in the thickness direction, relative to portions of the first lead 1 covered by the protective portion 42. The arrangements provide a longer lifetime and ensures reliability and proper light emission.Type: ApplicationFiled: April 28, 2011Publication date: February 28, 2013Applicant: ROHM CO., LTD.Inventor: Masahiko Kobayakawa
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Publication number: 20130049045Abstract: Embodiments disclose a light emitting device package including an insulating layer, a first lead frame and a second lead frame disposed on the insulating layer electrically separate from each other, a light emitting device disposed on the second lead frame electrically connected to the first lead frame and the second lead frame, the light emitting device includes a light emitting structure having a first conduction type semiconductor layer, an active layer, and a second conduction type semiconductor layer and a lens which encloses the light emitting device, wherein the insulating layer has an end portion projected beyond at least one of an end portion of the first lead frame and an end portion of the second lead frame, to form an opened region which exposes the insulating layer.Type: ApplicationFiled: March 6, 2012Publication date: February 28, 2013Inventors: Gun Kyo LEE, Nak-Hun Kim, Sun Mi Moon
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Publication number: 20130049006Abstract: Gold is used as a micromask to roughen a gallium nitride (GaN) surface in an LED device. In one example, a mesh of ITO (Indium Tin Oxide) is formed on a GaN layer. The mesh has holes that extend down to the GaN. A layer of silicon dioxide is deposited so that it covers the GaN at the bottoms of the holes. A layer of gold is formed over the oxide. A thermal treatment causes the gold to ball up into small gold features. These gold features are used as a micromask in a subsequent etching step. Areas of the bottoms of the holes that are not covered by a gold feature are etched. Etching occurs through the oxide and down into the GaN. The roughening process involves no silver, and involves no harsh cleaning solvents or processes that might otherwise have been used were the micromask made of silver.Type: ApplicationFiled: January 26, 2012Publication date: February 28, 2013Applicant: Bridgelux, Inc.Inventor: Syn-Yem Hu
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Publication number: 20130049061Abstract: A light-emitting device includes an element mounting substrate, a light-emitting element on the element mounting substrate, a case formed around the light-emitting element and having an opening on a light extraction side of the light-emitting device, and a sealing material filled in the opening of the case to seal the light-emitting element. The element mounting substrate includes an uneven portion configured to firmly attach the element mounting substrate to the case or the sealing material.Type: ApplicationFiled: June 5, 2012Publication date: February 28, 2013Applicant: Toyoda Gosei Co., Ltd.Inventors: Shigeo Takeda, Makoto Ishida, Mitsushi Terakami, Shota Yamamori
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Publication number: 20130049038Abstract: Disclosed is a light emitting device. The light emitting device includes a support substrate, a first light emitting structure provided on the support substrate and comprising a first conductive type first semiconductor layer, a first active layer, and a second conductive type second semiconductor layer, a first metal layer under the first light emitting structure, a second light emitting structure provided on the support substrate and comprising a first conductive type third semiconductor layer, a second active layer, and a second conductive type fourth semiconductor layer, a second metal layer under the second light emitting structure, and a contact part making contact with a lateral side of the first conductive type first semiconductor layer and electrically connected to the second metal layer.Type: ApplicationFiled: April 9, 2012Publication date: February 28, 2013Inventor: Hwan Hee JEONG
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Publication number: 20130049233Abstract: A chip package includes a substrate, a pad, a double-sided adhesive tape, a chip, and a sealing member. The pad is arranged on the substrate and has a top surface facing away from the substrate. The double-sided adhesive tape includes a first paste surface and an opposing second paste surface. The first paste surface is attached to the top surface. The chip is attached onto the second paste surface and includes a light emitting surface or a light receiving surface facing away from the second paste surface. The sealing member is formed on the pad and tightly surrounds the chip and the double-sided adhesive.Type: ApplicationFiled: October 30, 2011Publication date: February 28, 2013Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: KAI-WEN WU
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Publication number: 20130049039Abstract: Solid-state radiation transducer (SSRT) devices and methods of manufacturing and using SSRT devices are disclosed herein. One embodiment of the SSRT device includes a radiation transducer (e.g., a light-emitting diode) and a transmissive support assembly including a transmissive support member, such as a transmissive support member including a converter material. A lead can be positioned at a back side of the transmissive support member. The radiation transducer can be flip-chip mounted to the transmissive support assembly. For example, a solder connection can be present between a contact of the radiation transducer and the lead of the transmissive support assembly.Type: ApplicationFiled: August 26, 2011Publication date: February 28, 2013Applicant: MICRON TECHNOLOGY, INC.Inventor: Sameer S. Vadhavkar
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Publication number: 20130049034Abstract: This disclosure discloses a light-emitting device. The light-emitting device comprises: a substrate; a first light-emitting stack comprising a first active layer; a bonding interface formed between the substrate and the first light-emitting stack; and a contact structure formed between the first light-emitting stack and the bonding interface and comprising a first contact layer and a second contact layer closer to the bonding interface than the first contact layer; wherein the first contact layer and the second contact layer comprises the same material and the first contact layer has an impurity concentration lower than that of the second contact layer.Type: ApplicationFiled: September 12, 2012Publication date: February 28, 2013Inventor: Yi Chieh LIN
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Publication number: 20130049062Abstract: To provide a highly reliable light-emitting device with less occurrence of cracks in a sealant bonding two facing substrates together. In a light-emitting device, a first substrate including a light-emitting unit, and a second substrate are bonded to each other with glass frit. A wiring in the area overlapping with a sealing material formed by melting and solidifying glass frit may be formed of a conductive material having a linear thermal expansion coefficient close to that of a substrate material. More specifically, the difference in the linear thermal expansion coefficient between the conductive material and the substrate material is 5 ppm/K or less at a temperature of 0° C. to 500° C.Type: ApplicationFiled: August 17, 2012Publication date: February 28, 2013Inventors: Kaoru Hatano, Yusuke Nishido, Shunpei Yamazaki
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Publication number: 20130049048Abstract: An LED unit includes a housing accommodating a wiring substrate mounted an LED, the housing including a light projecting portion for projecting light emitted from the LED, and wiring lines electrically connected to the wiring substrate. First and second lead-out portions, for leading out the wiring lines, are respectively provided at opposite end portions of the housing along a specified direction when seen in a plan view. First and second attachment portions for attaching the housing are respectively provided in the opposite end portions of the housing along the specified direction. The first and second lead-out portions are arranged at the opposite sides from each other with respect to a centerline of the housing extending along the specified direction. The first and second attachment portions are respectively arranged at the opposite sides from the first and second lead-out portions with respect to the centerline of the housing.Type: ApplicationFiled: August 6, 2012Publication date: February 28, 2013Applicant: PANASONIC CORPORATIONInventors: Katsuhiro TAKEDA, Minoru BANNAI, Toyohiro MARUYAMA, Takasi OOSUGI
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Patent number: 8384088Abstract: The invention relates to a vertical light emitting diode (VLED) having an outwardly disposed electrode, the vertical light emitting diode comprises a conductive base, a semiconductor epitaxial structure formed on the conductive base, a passivation layer formed at the periphery of the semiconductor epitaxial structure, and a conductive frame formed on the passivation layer and contacting with the edge of the upper surface of the semiconductor epitaxial structure such that the conductive frame is electrically connected to the semiconductor epitaxial structure.Type: GrantFiled: November 4, 2010Date of Patent: February 26, 2013Assignee: Semileds Optoelectronics Co., Ltd.Inventors: Chen-Fu Chu, Wen-Huang Liu, Hao-Chun Cheng
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Patent number: 8384118Abstract: Described is a process for forming an LED structure using a laser lift-off process to remove the growth substrate (e.g., sapphire) after the LED die is bonded to a submount. The underside of the LED die has formed on it anode and cathode electrodes that are substantially in the same plane, where the electrodes cover at least 85% of the back surface of the LED structure. The submount has a corresponding layout of anode and cathode electrodes substantially in the same plane. The LED die electrodes and submount electrodes are ultrasonically welded together such that virtually the entire surface of the LED die is supported by the electrodes and submount. Other bonding techniques may also be used. No underfill is used. The growth substrate, forming the top of the LED structure, is then removed from the LED layers using a laser lift-off process.Type: GrantFiled: April 27, 2010Date of Patent: February 26, 2013Assignees: Koninklijke Philips electronics N.V., Philips Lumileds Lighting Company LLCInventors: Stefano Schiaffino, Daniel A. Steigerwald, Mari Holcomb, Grigoriy Basin, Paul Martin, John Epler
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Patent number: 8384117Abstract: Provided are a light emitting device package and a lighting system comprising the same. The light emitting device package comprises a package body having a trench, a metal layer within the trench, and a light emitting device over the metal layer.Type: GrantFiled: February 17, 2010Date of Patent: February 26, 2013Assignee: LG Innotek Co., Ltd.Inventors: Yong Seon Song, Kyoung Woo Jo
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Publication number: 20130043497Abstract: A packaging device for matrix-arrayed semiconductor light-emitting elements of high power and high directivity comprises a metal base, an array chip and a plurality of metal wires. The metal base is of highly heat conductive copper or aluminum, and a first electrode area and at least one second electrode area which are electrically isolated are disposed on the metal base. The array chip is disposed on the first electrode area, on which multiple matrix-arranged semiconductor light-emitting elements and at least one wire bond pad adjacent to the light-emitting elements are disposed. The light-emitting element is a VCSEL element, an HCSEL element or an RCLED element. The metal wires are connected between the wire bond pad and the second electrode area to transmit power signals. Between the bottom surface and the first electrode area is disposed a conductive adhesive to bond and facilitate electrical connection between the two.Type: ApplicationFiled: October 23, 2012Publication date: February 21, 2013Applicant: TRUELIGHT CORPORATIONInventor: TrueLight Corporation
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Publication number: 20130043503Abstract: A semiconductor light emitting device, which includes a light transmissive electrode layer formed using a conductive thin film and an insulating thin film to substitute for a transparent electrode layer, comprises a substrate; a first semiconductor layer formed on the substrate; an active layer formed on the first semiconductor layer; a second semiconductor layer formed on the active layer; a light transmissive electrode layer formed on the second semiconductor layer, the light transmissive electrode layer having a structure in which at least one conductive thin film and at least one insulating thin film are deposited; and a first electrode formed on the light transmissive electrode layer, wherein the light transmissve electrode layer includes at least one contact portion for contacting the at least one conductive thin film with the first electrode.Type: ApplicationFiled: December 19, 2011Publication date: February 21, 2013Inventors: Taeil JUNG, YoungChae Kim, SunMan Kim, Yeji Han, Chunghoon Park, Byeong-Kyun Choi, Se-Eun Kang
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Publication number: 20130043501Abstract: An LED module A1 is provided with: a first lead 1 including a die-bonding portion 12 with a mount surface 12a, and a front-end sunk portion 14; a second lead 2 including a wire-bonding portion 22 and spaced apart from the first lead 1; an LED chip 3 mounted on the mount surface 12a and provided with a first electrode terminal 31 and a second electrode terminal 32; a wire 61 connecting the second electrode terminal 32 and the wire-bonding portion 22; and a support member 4 including a protective portion 42 and supporting the leads 1 and 2. The protective portion covers the front-end sunk portion 14 with the mount surface 12a exposed, and includes an inclined portion 42a that becomes thinner as proceeding from the die-bonding portion 12 toward the lead 2. The arrangements provide a longer lifetime and ensures reliability and proper light emission.Type: ApplicationFiled: April 28, 2011Publication date: February 21, 2013Applicant: ROHM CO., LTD.Inventors: Masahiko Kobayakawa, Naoyuki Kizu
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Patent number: 8378371Abstract: An optoelectronic semiconductor chip (1) is specified having a semiconductor body (2) which comprises a semiconductor layer sequence and an active area which is suitable for radiation production, and having a radiation-permeable and electrically conductive contact layer (6) which is arranged on the semiconductor body and is electrically conductively connected to the active area, with the contact layer extending over a barrier layer (5) in the semiconductor layer sequence and over a connecting layer (4) in the semiconductor layer sequence, and with the contact layer being electrically conductively connected to the active area via a connecting area (7) of the connecting layer. A method is also specified for producing a contact structure for an optoelectronic semiconductor chip which is suitable for radiation production.Type: GrantFiled: March 26, 2007Date of Patent: February 19, 2013Assignee: OSRAM Opto Semiconductors GmbHInventor: Stefan Illek