Patents Assigned to Optotech, Inc.
  • Patent number: 8008679
    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: Grant
    Filed: December 8, 2008
    Date of Patent: August 30, 2011
    Assignee: Huga Optotech Inc.
    Inventor: Hsuan-Tang Chan
  • Patent number: 7999273
    Abstract: A light emitting device is provided which includes a substrate, a first semiconductor layer having a first region and a second region on the substrate; ac active layer is formed on the first region of the first semiconductor layer; a second semiconductor layer is formed on the active surface layer and the portion surface of the second semiconductor layer is a rough surface; a plurality of pillar structures with a hollow structure, and both of the outer surface and inner surface of the pillar structures are rough surface; a transparent conductive layer is formed to cover the plurality of pillar structures; a first electrode is formed on the transparent conductive layer; and a second electrode is formed on the second region of the first semiconductor layer.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: August 16, 2011
    Assignee: HUGA Optotech Inc.
    Inventors: Tzong-Liang Tsai, Lin-Chieh Kao
  • Patent number: 7973326
    Abstract: The invention discloses a semiconductor structure combination for the epitaxy of a semiconductor optoelectronic device and manufacture thereof. The semiconductor structure combination according to the invention includes a substrate and a semiconductor material. The substrate has an upper surface and a recess formed on the upper surface. The sidewalls of the recess provide a first site for the growth of a plurality of first epitaxial crystals of the semiconductor material toward a first preferred orientation. A bottom of the recess provides a second site for the growth of a second epitaxial crystal of the semiconductor material toward the first preferred orientation. Flat regions adjacent to the recess provide a third site for the growth of a third epitaxial crystal of the semiconductor material toward the first preferred orientation.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: July 5, 2011
    Assignee: HUGA Optotech Inc.
    Inventors: Chih-Ching Cheng, Tzong-Liang Tsai
  • Patent number: 7960749
    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: Grant
    Filed: April 10, 2009
    Date of Patent: June 14, 2011
    Assignee: Huga Optotech Inc.
    Inventor: Shu Hui Lin
  • Patent number: 7956373
    Abstract: The invention discloses a semiconductor light-emitting device and a fabricating method thereof. The semiconductor light-emitting device according to the invention includes a substrate, a multi-layer structure, a top-most layer, and at least one electrode. The multi-layer structure is formed on the substrate and includes a light-emitting region. The top-most layer is formed on the multi-layer structure, and the lower part of the sidewall of the top-most layer exhibits a first surface morphology relative to a first pattern. In addition, the upper part of the sidewall of the top-most layer exhibits a second surface morphology relative to a second pattern. The first pattern is different from the second pattern. The at least one electrode is formed on the top-most layer.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: June 7, 2011
    Assignee: Huga Optotech, Inc.
    Inventors: Wei-Kai Wang, Su-Hui Lin, Wen-Chung Shih
  • Patent number: 7956374
    Abstract: The invention discloses a semiconductor light-emitting device. The semiconductor light-emitting device according to the invention includes a substrate, a multi-layer structure, at least one electrode structure, and a light reflector. The substrate has an upper surface. The multi-layer structure is formed on the upper surface of the substrate. The multi-layer structure includes a light-emitting region and at least one semiconductor material layer. The multi-layer structure also has a top surface. The at least one electrode structure is formed on the top surface of the multi-layer structure. The light reflector is formed on the top surface of the multi-layer structure.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: June 7, 2011
    Assignee: HUGA Optotech Inc.
    Inventor: Shu-Wei Chiu
  • Publication number: 20110121348
    Abstract: A semiconductor light-emitting device includes a substrate having an upper surface and a plurality of bumps positioned on the upper surface in a periodic manner, 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 first conductive type semiconductor layer includes a plurality of protrusions each facing a portion of the substrate between the bumps, the protrusions are positioned in a ring manner at a peripheral region of the first conductive type semiconductor layer, and the protrusions are spaced apart from the bumps.
    Type: Application
    Filed: January 6, 2010
    Publication date: May 26, 2011
    Applicant: HUGA OPTOTECH INC.
    Inventors: JING JIE DAI, YEN CHIEH HUANG, SHU YING YANG
  • Publication number: 20110121334
    Abstract: A semiconductor light-emitting device includes a substrate having an upper surface and a plurality of bumps positioned on the upper surface, 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. In one embodiment of the present disclosure, each of the bumps has a top plane substantially parallel to the upper surface, the first conductive type semiconductor layer has a plurality of protrusions each facing a portion of the substrate between the bumps, and the protrusions are spaced apart from the bumps.
    Type: Application
    Filed: January 6, 2010
    Publication date: May 26, 2011
    Applicant: HUGA OPTOTECH INC.
    Inventors: JING JIE DAI, YEN CHIEH HUANG, SHU YING YANG
  • Patent number: 7947991
    Abstract: A high efficiency lighting device comprising a light emitting diode structure, an eutectic layer and a distributed-Bragg reflecting layer (DBR) therebetween is disclosed. The distributed-Bragg reflecting layer is attached to said light emitting diode structure by vapor deposition and comprises a plurality of high refraction layers, a plurality of low refraction layers and a micro-contact layer array. The high refraction layers and said low refraction layers are arranged in an alternating manner, so as to form a stacked thin film having an alternate high/low refraction pattern. The micro-contact layers are in said stacked thin film and extend vertically through the stacked thin film, therefore connecting said light emitting diode structure and said eutectic layer.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: May 24, 2011
    Assignee: Huga Optotech Inc.
    Inventors: Wei-Kai Wang, Su-Hui Lin, Wen-Chung Shih
  • Patent number: 7928461
    Abstract: The invention discloses a light-emitting diode which comprises a substrate, a first conducting-type semiconductor layer, plural pillars, a transparent insulating material, an illuminating layer, a second conducting-type semiconductor layer, a first transparent conducting layer and a second transparent conducting layer. The first conducting-type semiconductor layer is formed on the substrate, and the top surface of the first conducting-type semiconductor layer comprises a first region and a second region surrounded by the first region. The pillars are formed on the first region. The transparent insulating material is filled in the gaps between the pillars to be as high as the pillars. The illuminating layer is formed on the second region, and the second conducting-type semiconductor layer is formed on the illuminating layer.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: April 19, 2011
    Assignee: Huga Optotech, Inc.
    Inventors: Lin-Chieh Kao, Shu-Ying Yang
  • Patent number: 7923744
    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: Grant
    Filed: April 6, 2010
    Date of Patent: April 12, 2011
    Assignee: HUGA Optotech Inc.
    Inventors: Tzong-Liang Tsai, Wei-Kai Wang, Su-Hui Lin, Yi-Cun Lu
  • 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: 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
  • 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
  • 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