Patents Assigned to Huga Optotech Inc.
  • Patent number: 7915605
    Abstract: LED packaged structures and applications thereof are disclosed, characterized in that: an active layer in the LED or the LED packaged structure is formed on a first semiconductor conductive layer with multi-quantum wells; and a second semiconductor conductive layer is formed on the active layer; wherein a plurality of particles formed by at least one hetero-material are scattered between the first semiconductor conductive layer and the active layer in order to form an uneven multi-quantum well.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: March 29, 2011
    Assignee: HUGA Optotech Inc.
    Inventors: Tzong-Liang Tsai, Chih-Ching Cheng
  • Publication number: 20110001147
    Abstract: A semiconductor light-emitting device comprises a substrate, a first conductive type semiconductor layer positioned on the substrate, a light-emitting structure positioned on the first conductive type semiconductor layer, and a second conductive type semiconductor layer positioned on the light-emitting structure. The substrate includes an upper surface and a plurality of protrusions positioned on the upper surface. Each of the protrusions includes a top surface, a plurality of wall surfaces, and a plurality of inclined surfaces sandwiched between the top surface and the wall surfaces.
    Type: Application
    Filed: August 13, 2010
    Publication date: January 6, 2011
    Applicant: HUGA OPTOTECH INC.
    Inventors: Chih CHING Cheng, Tzong Liang Tsai, Shu Hui Lin
  • Patent number: 7834368
    Abstract: A light-emitting diode includes a substrate, a primary stack structure, a secondary stack structure, a transparent insulating material and a transparent conducting layer in an embodiment. Each of the primary and the secondary stack structure has a first conducting-type semiconductor layer, and illuminating layer, and a second conducting-type semiconductor layer sequentially formed on the substrate, wherein plural pillar-like holes are formed at the top surface of the second conducting-type semiconductor layer of the secondary stack structure and protrude into the first conducting-type semiconductor layer of the secondary stack structure. The transparent insulating material is filled into the holes. The transparent conducting layer is coated on the primary stack structure, the transparent insulating material, and the tope surface of the second conducting-type semiconductor layer of the secondary stack structure.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: November 16, 2010
    Assignee: Huga Optotech, Inc.
    Inventors: Lin-Chieh Kao, Shu-Ying Yang
  • Patent number: 7821017
    Abstract: The invention discloses a method for fabricating a light-emitting diode. In an embodiment of the invention, the method comprises the following steps of (a) preparing a substrate; (b) forming an epitaxial layer on the substrate, wherein the epitaxial layer has an upper surface; (c) forming a mask layer on a first region of the upper surface of the epitaxial layer; (d) forming a semiconductor multi-layer structure on a second region of the upper surface of the epitaxial layer, wherein the second region is distinct from the first region; (e) removing the mask layer formed on the first region of the upper surface of the epitaxial layer; and (f) forming an electrode on the first region of the upper surface of the epitaxial layer.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: October 26, 2010
    Assignee: HUGA Optotech Inc.
    Inventors: Chi-Shen Lee, Su-Hui Lin
  • Publication number: 20100258824
    Abstract: An electrode structure includes at least two first electrodes and at least two second electrodes configured to be electrically connected in parallel to a power supply. Each of the first electrodes includes at least one first pad and at least one first extending wire with one end connected to the first pad, and the at least two first electrodes are spaced apart from each other. Each of the second electrodes includes at least one second pad and at least one second extending wire with one end connected to the second pad, and the at least two second electrodes are spaced apart from each other.
    Type: Application
    Filed: January 5, 2010
    Publication date: October 14, 2010
    Applicant: HUGA OPTOTECH INC.
    Inventors: TAI CHUN WANG, WEI CHIH WEN
  • Publication number: 20100258836
    Abstract: A light-emitting device includes a substrate; a stacked structure including a first type semiconductor layer positioned on the substrate, a light-emitting structure positioned on the first type semiconductor layer, and a second type semiconductor layer positioned on the light-emitting structure, wherein the stacked structure includes a depression exposing the first type semiconductor layer; a first electrode positioned on the first type semiconductor layer in the depression, the first electrode including at least one first pad and at least one first extending wire with one end connected to the first pad; a second electrode positioned on the second type semiconductor layer, the second electrode including at least one second pad and at least one second extending wire with one end connected to the second pad; wherein the distance between the first pad and the second pad is greater than 70% of the width of the light-emitting device.
    Type: Application
    Filed: January 5, 2010
    Publication date: October 14, 2010
    Applicant: HUGA OPTOTECH INC.
    Inventors: TAI CHUN WANG, WEI CHIH WEN
  • Patent number: 7804104
    Abstract: The invention discloses a light-emitting diode, including a substrate, a first conductive type semiconductor layer, a second conductive type semiconductor layer, a light-emitting layer and plural laminated structures. The first conductive type semiconductor layer, the light-emitting layer and the second conductive type semiconductor layer are formed on the substrate in sequence. The plural laminated structures are formed on the upper surface of the second conductive type semiconductor layer such that the upper surface is partially exposed. Each laminated structure consists of at least one first insulated layer with a high refractive index and at least one second insulated layer with a low refractive index, where the at least one first insulated layer and the at least one second insulated layer are alternately formed to obtain said each laminated structure. Thereby, light emitted from the light-emitting layer can be reflected by the laminated structures to enhance the light-extraction efficiency.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: September 28, 2010
    Assignee: Huga Optotech Inc.
    Inventors: Su-Hui Lin, Sheng-Hsien Hsu, Jing-Jie Dai, Tzong Liang Tsai
  • Publication number: 20100230706
    Abstract: The invention discloses a semiconductor light-emitting device, which includes a substrate, a first conductive type semiconductor material layer, a second conductive type semiconductor material layer, a light-emitting layer, a first electrode, a second electrode, and a plurality of bump structures. The first conductive type semiconductor material layer is formed on the substrate and has an upper surface which includes a first region and a second region distinct from the first region. The first electrode is formed on the first region. The light-emitting layer and the second conductive type semiconductor material layer are formed on the second region. The bump structures are formed on the upper surface of the first conductive type semiconductor material layer and between the first region and the second region. At least one recess is formed in the sidewall of each bump structure. Alternatively, the sidewall of each bump structure has a curved contour.
    Type: Application
    Filed: April 6, 2010
    Publication date: September 16, 2010
    Applicant: HUGA OPTOTECH INC.
    Inventors: Tzong Liang Tsai, Wei-Kai Wang, Su-Hui Lin, Yi-Cun Lu
  • Patent number: 7768027
    Abstract: The invention discloses a semiconductor light-emitting device, which includes a substrate, a first conductive type semiconductor material layer, a second conductive type semiconductor material layer, a light-emitting layer, a first electrode, a second electrode, and a plurality of bump structures. The first conductive type semiconductor material layer is formed on the substrate and has an upper surface which includes a first region and a second region distinct from the first region. The first electrode is formed on the first region. The light-emitting layer and the second conductive type semiconductor material layer are formed on the second region. The bump structures are formed on the upper surface of the first conductive type semiconductor material layer and between the first region and the second region. Each bump structure is made of ITO, SiO2, SiN, ZnO, polymide, BCB, SOG, InO, or SnO.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: August 3, 2010
    Assignee: Huga Optotech Inc.
    Inventors: Tzong-Liang Tsai, Wei-Kai Wang, Su-Hui Lin, Yi-Cun Lu
  • Patent number: 7745837
    Abstract: The invention discloses a semiconductor light-emitting device and a method of fabricating the same. The semiconductor light-emitting device according to the invention includes a substrate, a first semiconductor material layer, a multi-layer structure and an ohmic electrode structure. The substrate has a first upper surface and a plurality of recesses formed on the first upper surface. The first semiconductor material layer is formed on the first upper surface of the substrate and has a second upper surface. The multi-layer structure is formed on the second upper surface of the first semiconductor material layer and includes a light-emitting region. The ohmic electrode structure is formed on the multi-layer structure. In particular, the first semiconductor material layer has a refractive index different from those of the substrate and a bottom-most layer of the multi-layer structure.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: June 29, 2010
    Assignee: Huga Optotech Inc.
    Inventor: Tzong-Liang Tsai
  • Patent number: 7737453
    Abstract: Disclosed is a light emitting diode structure including a Constructive Oxide Contact Structure contact layer. The light emitting diode structure comprises a substrate, a buffer layer formed on the substrate, a lower confinement layer formed on the buffer layer, a light emitting layer formed on the lower confinement layer, an upper confinement layer formed on the light emitting layer, a Constructive Oxide Contact Structure contact layer formed on the upper confinement layer whose conducting type can be P-type, N-type, or I-type, a first electrode, and a second electrode (transparent electrode). The transparent electrode is formed on the Constructive Oxide Contact Structure contact layer as an anode of the light emitting diode. The first electrode is formed on the lower confinement layer and is spaced apart from the light emitting layer, the upper confinement layer, the contact layer, and the transparent electrode. The first electrode is used as a cathode of the light emitting diode.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: June 15, 2010
    Assignee: Huga Optotech Inc.
    Inventors: Tzong-Liang Tsai, Chi-Shen Lee, Ting-Kai Huang
  • Publication number: 20100123146
    Abstract: A light-emitting device structure comprises a substrate having a first region and a second region outside the first region, a first conductive type semiconductor layer positioned on the first region, a light-emitting structure positioned on the first conductive type semiconductor layer, a second conductive type semiconductor layer positioned on the light-emitting structure, and a wall structure positioned on the second region.
    Type: Application
    Filed: April 10, 2009
    Publication date: May 20, 2010
    Applicant: HUGA OPTOTECH INC.
    Inventor: SHU HUI LIN
  • Publication number: 20100101496
    Abstract: A wafer carrier comprises a base and a shielding plate positioned on the top surface of the base in a disassembled manner. The top surface of the base is configured to retain a plurality of wafers, and the shielding plate has a plurality of openings exposing the wafers. In particular, the shielding plate shields one portion of the base other than the other portions occupied by the wafers to prevent the reaction gases from conducting the chemical reaction to generate the reactant directly on the surface of the base. Consequently, the base is isolated from the chemical reaction, and it is not necessary to replace the base before conducting the next fabrication process or to clean the reactants on the surface of the base by thermal baking or etching.
    Type: Application
    Filed: December 29, 2009
    Publication date: April 29, 2010
    Applicant: HUGA OPTOTECH INC.
    Inventors: CHIH CHING CHENG, TZONG-LIANG TSAI
  • Publication number: 20100059773
    Abstract: A semiconductor light-emitting device comprises a substrate, a first conductive type semiconductor layer positioned on the substrate, a light-emitting structure positioned on the first conductive type semiconductor layer, and a second conductive type semiconductor layer positioned on the light-emitting structure. The substrate includes an upper surface and a plurality of protrusions positioned on the upper surface. Each of the protrusions includes a top surface, a plurality of wall surfaces, and a plurality of inclined surfaces sandwiched between the top surface and the wall surfaces.
    Type: Application
    Filed: December 3, 2008
    Publication date: March 11, 2010
    Applicant: HUGA OPTOTECH INC.
    Inventors: CHIH CHING CHENG, TZONG-LIANG TSAI, SHU HUI LIN
  • Patent number: 7659557
    Abstract: The invention provides a semiconductor light-emitting device with II-V group (or II-IV-V group) compound contact layer and a method of fabricating the same. The semiconductor light-emitting device according to a preferred embodiment of the invention includes a substrate, a first conductive type semiconductor material layer, a light-emitting layer, a first electrode, a second conductive type semiconductor material layer, a II-V group (or II-IV-V group) compound contact layer, a transparent conductive layer, and a second electrode. The existence of the II-V group (or II-IV-V group) compound contact layer improves the ohmic contact between the second conductive type semiconductor material layer and the transparent conductive layer.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: February 9, 2010
    Assignee: Huga Optotech Inc.
    Inventors: Chiung-Chi Tsai, Tzong-Liang Tsai, Yu-Chu Li
  • Publication number: 20100025705
    Abstract: A high efficiency luminous device and a manufacturing method thereof are disclosed. The high efficiency luminous device includes a LED structure, a first metal electrode, and a second metal electrode. The LED structure is for emitting light. The first metal electrode is formed on the LED structure, and the first metal electrode has a plurality of first openings therein. The second metal electrode is formed on the LED structure, and the second metal electrode has a plurality of second openings therein. The plurality of first openings and the plurality of second openings allow the light emitted from the LED structure to pass therethrough.
    Type: Application
    Filed: July 30, 2008
    Publication date: February 4, 2010
    Applicant: HUGA OPTOTECH INC.
    Inventors: Wei-Kai Wang, Su-Hui Lin, Wen-Chung Shih
  • Publication number: 20100025704
    Abstract: A method for fabricating a high efficiency lighting device and the structure thereof are disclosed. The method includes the following steps: providing a light emitting diode structure; attaching a distributed-Bragg reflecting layer (DBR) to the light emitting diode structure by vapor deposition; and connecting the light emitting diode structure to a eutectic layer through the distributed-Bragg reflecting layer to form the high efficiency lighting device.
    Type: Application
    Filed: July 29, 2008
    Publication date: February 4, 2010
    Applicant: HUGA OPTOTECH INC.
    Inventors: Wei-Kai Wang, Su-Hui Lin, Wen-Chung Shih
  • Publication number: 20100006862
    Abstract: The invention provides a substrate for fabricating a light emitting device and the light emitting device fabricated therefrom. The substrate includes at least one platform region having a first facet direction for epitaxial growth; and a plurality of continuous protruded portions surrounding the at least one platform region to isolate the at least one platform region from another platform region, wherein the first facet direction is substantially excluded from facet directions of the plurality of continuous protruded portions. Since facet directions of the plurality of continuous protruded portions substantially do not include the first facet direction, during formation of the light emitting device, epitaxial growth is mainly conducted on the at least one platform region, which may prevent epitaxial defects from generating and enhance external quantum efficiency of the light emitting device.
    Type: Application
    Filed: May 11, 2009
    Publication date: January 14, 2010
    Applicant: HUGA OPTOTECH INC.
    Inventor: Chih-Ching Cheng
  • Publication number: 20090308319
    Abstract: A wafer carrier comprises a base and a shielding plate positioned on the top surface of the base in a disassembled manner. The top surface of the base is configured to retain a plurality of wafers, and the shielding plate has a plurality of openings exposing the wafers. In particular, the shielding plate shields one portion of the base other than the other portions occupied by the wafers to prevent the reaction gases from conducting the chemical reaction to generate the reactant directly on the surface of the base. Consequently, the base is isolated from the chemical reaction, and it is not necessary to replace the base before conducting the next fabrication process or to clean the reactants on the surface of the base by thermal baking or etching.
    Type: Application
    Filed: August 19, 2008
    Publication date: December 17, 2009
    Applicant: HUGA OPTOTECH INC.
    Inventors: CHIH CHING CHENG, TZONG-LIANG TSAI
  • Publication number: 20090224275
    Abstract: A light emitting diode and methods of forming the same are provided. The light emitting diode includes an epitaxy chip having a first substrate, a first conductive semiconductor layer, a light emitting layer and a second conductive semiconductor layer on the first substrate; a second substrate holding the epitaxy chip; an isolation layer on the second substrate, the isolation layer having a first portion connecting to one side of the epitaxy chip and a second portion connecting to another side of the epitaxy chip; a first electrode on the first portion of the isolation layer; and a second electrode on the second portion of the isolation layer, wherein the first electrode and the second electrode respectively and electrically connect to the first conductive semiconductor layer and the second conductive semiconductor layer.
    Type: Application
    Filed: December 8, 2008
    Publication date: September 10, 2009
    Applicant: HUGA OPTOTECH INC.
    Inventor: Hsuan-Tang Chan