Patents by Inventor Chuan-Cheng Tu

Chuan-Cheng Tu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210217926
    Abstract: A light-emitting apparatus comprises a board having a plurality of conductive channels penetrating thereof; a plurality of light emitting units for emitting different color lights, disposed on the board and electrically connected to the plurality of conductive channels; and an opaque layer arranged on the board for preventing the plurality of light emitting units from crosstalk, and comprising a plurality of holes for exposing and separating the plurality of light emitting units in a top view.
    Type: Application
    Filed: March 31, 2021
    Publication date: July 15, 2021
    Inventors: Min-Hsun HSIEH, Tzer-Perng CHEN, Jen-Chau WU, Yuh-Ren SHIEH, Chuan-Cheng TU
  • Patent number: 10978615
    Abstract: The present disclosure provides a light-emitting apparatus comprising a board having a plurality of first metal contacts and a plurality of second metal contacts on a top surface; a plurality of LEDs being bonded to the board, the each of the LEDs comprising a first cladding layer on the substrate, an active layer on the first cladding layer, a second cladding layer on the active layer, an upper surface on the second cladding layer, a first metal layer, and a second metal layer, wherein the first metal layer and the second metal layer are between the active layer and the board; an opaque layer between the adjacent LEDs and comprising a polymer mixed with a plurality of inorganic particles; and an encapsulating layer on the upper surfaces and opposite to the board, wherein the encapsulating layer does not cover a side wall of the active layer; and an underfill material between the board and the plurality of LEDs, wherein the underfill material surrounds each of the first metal layer and the second metal layer.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: April 13, 2021
    Assignee: Epistar Corporation
    Inventors: Min-Hsun Hsieh, Tzer-Perng Chen, Jen-Chau Wu, Yuh-Ren Shieh, Chuan-Cheng Tu
  • Publication number: 20200227591
    Abstract: The present disclosure provides a light-emitting apparatus comprising a board having a plurality of first metal contacts and a plurality of second metal contacts on a top surface; a plurality of LEDs being bonded to the board, the each of the LEDs comprising a first cladding layer on the substrate, an active layer on the first cladding layer, a second cladding layer on the active layer, an upper surface on the second cladding layer, a first metal layer, and a second metal layer, wherein the first metal layer and the second metal layer are between the active layer and the board; an opaque layer between the adjacent LEDs and comprising a polymer mixed with a plurality of inorganic particles; and an encapsulating layer on the upper surfaces and opposite to the board, wherein the encapsulating layer does not cover a side wall of the active layer; and an underfill material between the board and the plurality of LEDs, wherein the underfill material surrounds each of the first metal layer and the second metal layer.
    Type: Application
    Filed: March 24, 2020
    Publication date: July 16, 2020
    Inventors: Min-Hsun HSIEH, Tzer-Perng CHEN, Jen-Chau WU, Yuh-Ren SHIEH, Chuan-Cheng TU
  • Publication number: 20150295154
    Abstract: The present disclosure provides a method for forming a light-emitting apparatus, comprising providing a carrier having a plurality of first metal contacts; forming a light-emitting structure comprising a substrate, a first cladding layer on the substrate, an active layer on the first cladding layer, and a second cladding layer on the active layer; bonding the light-emitting structure to the carrier; forming a cap layer on a side of the light-emitting structure opposite to the carrier; and cutting the carrier and the cap layer to form a chip-scale LED unit.
    Type: Application
    Filed: April 15, 2015
    Publication date: October 15, 2015
    Inventors: Chuan-Cheng TU, Jen-Chau WU, Yuh-Ren SHIEH, Tzer-Perng CHEN, Min-Hsun HSIEH
  • Patent number: 9018655
    Abstract: The present disclosure provides a method for forming a light-emitting apparatus, comprising providing a first board having a plurality of first metal contacts, providing a substrate, forming a plurality of light-emitting stacks and trenches on the substrate, wherein the light-emitting stacks are apart from each other by the plurality of the trenches, bonding the light-emitting stacks to the first board, forming an encapsulating material commonly on the plurality of the light-emitting stacks, and cutting the first board and the encapsulating material to form a plurality of chip-scale LED units.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: April 28, 2015
    Assignee: Epistar Corporation
    Inventors: Chuan-Cheng Tu, Jen-Chau Wu, Yuh-Ren Shieh, Tzer-Perng Chen, Min-Hsun Hsieh
  • Patent number: 8969907
    Abstract: A flip-chip light emitting diode comprises a transparent base-plate, at least a first electrical semi-conductive layer, a light emitting layer, a second electrical semi-conductive layer, at least a first ohmic contact, a second ohmic contact and a third ohmic contact are installed above the transparent base-plate. The at least first ohmic contact is electrically connected to the third ohmic contact through a connection passage. A first electrode area is formed above the second electrical semi-conductive layer. The second ohmic contact is disposed above the transparent base-plate and adjacent to a side of the first ohmic contact. A second electrode area is formed on the second ohmic contact.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: March 3, 2015
    Assignee: RGB Consulting Co., Ltd.
    Inventor: Chuan-Cheng Tu
  • Publication number: 20140327033
    Abstract: A flip-chip light emitting diode comprises a transparent base-plate, at least a first electrical semi-conductive layer, a light emitting layer, a second electrical semi-conductive layer, at least a first ohmic contact, a second ohmic contact and a third ohmic contact are installed above the transparent base-plate. The at least first ohmic contact is electrically connected to the third ohmic contact through a connection passage. A first electrode area is formed above the second electrical semi-conductive layer. The second ohmic contact is disposed above the transparent base-plate and adjacent to a side of the first ohmic contact. A second electrode area is formed on the second ohmic contact.
    Type: Application
    Filed: July 21, 2014
    Publication date: November 6, 2014
    Inventor: Chuan-Cheng TU
  • Patent number: 8823043
    Abstract: A flip-chip light emitting diode comprises a transparent base-plate, at least a first electrical semi-conductive layer, a light emitting layer, a second electrical semi-conductive layer, at least a first ohmic contact, a second ohmic contact and a third ohmic contact are installed above the transparent base-plate. The at least first ohmic contact is electrically connected to the third ohmic contact through a connection passage. A first electrode area is formed above the second electrical semi-conductive layer. The second ohmic contact is disposed above the transparent base-plate and adjacent to a side of the first ohmic contact. A second electrode area is formed on the second ohmic contact.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: September 2, 2014
    Assignee: RGB Consulting Co., Ltd.
    Inventor: Chuan-Cheng Tu
  • Patent number: 8816386
    Abstract: A flip-chip LED including a light emitting structure, a first dielectric layer, a first metal layer, a second metal layer, and a second dielectric layer is provided. The light emitting structure includes a first conductive layer, an active layer, and a second conductive layer. The active layer is disposed on the first conductive layer, and the second conductive layer is disposed on the active layer. The first metal layer is disposed on the light emitting structure and is contact with the first conductive layer, and part of the first metal layer is disposed on the first dielectric layer. The second metal layer is disposed on the light emitting structure and is in contact with the second conductive layer, and part of the second metal layer is disposed on the first dielectric layer. The second dielectric layer is disposed on the first dielectric layer. The first conductive layer includes a rough surface so as to improve a light extraction efficiency.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: August 26, 2014
    Assignee: Epistar Corporation
    Inventors: Tzer-Perng Chen, Jen-Chau Wu, Chuan-Cheng Tu, Yuh-Ren Shieh
  • Patent number: 8791475
    Abstract: A light-emitting diode includes a first electrode, a conductive substrate layer, a reflective layer, a first electrical semiconductor layer, a active layer, a second electrical semiconductor layer, and at least one second electrode. The conductive substrate layer is formed on the first electrode. The reflective layer is formed on the conductive substrate layer. The first electrical semiconductor layer is formed on the reflective layer. The active layer is formed on the first electrical semiconductor layer. The second electrical semiconductor layer is formed on the active layer. The at least one second electrode is formed on the second electrical semiconductor layer. At least one third electrode is additionally disposed under the second electrical semiconductor layer. At least one connection channel is disposed between the second electrode and the third electrode, so that the second electrode and the third electrode are electrically connected.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: July 29, 2014
    Assignee: RGB Consulting Co., Ltd.
    Inventor: Chuan-Cheng Tu
  • Publication number: 20140186979
    Abstract: The present disclosure provides a method for forming a light-emitting apparatus, comprising providing a first board having a plurality of first metal contacts, providing a substrate, forming a plurality of light-emitting stacks and trenches on the substrate, wherein the light-emitting stacks are apart from each other by the plurality of the trenches, bonding the light-emitting stacks to the first board, forming an encapsulating material commonly on the plurality of the light-emitting stacks, and cutting the first board and the encapsulating material to form a plurality of chip-scale LED units.
    Type: Application
    Filed: November 18, 2013
    Publication date: July 3, 2014
    Applicant: EPISTAR CORPORATION
    Inventors: Chuan-Cheng TU, Jen-Chau WU, Yuh-Ren SHIEH, Tzer-Perng CHEN, Min-Hsun HSIEH
  • Publication number: 20140131760
    Abstract: A flip-chip LED including a light emitting structure, a first dielectric layer, a first metal layer, a second metal layer, and a second dielectric layer is provided. The light emitting structure includes a first conductive layer, an active layer, and a second conductive layer. The active layer is disposed on the first conductive layer, and the second conductive layer is disposed on the active layer. The first metal layer is disposed on the light emitting structure and is contact with the first conductive layer, and part of the first metal layer is disposed on the first dielectric layer. The second metal layer is disposed on the light emitting structure and is in contact with the second conductive layer, and part of the second metal layer is disposed on the first dielectric layer. The second dielectric layer is disposed on the first dielectric layer. The first conductive layer includes a rough surface so as to improve a light extraction efficiency.
    Type: Application
    Filed: January 16, 2014
    Publication date: May 15, 2014
    Applicant: EPISTAR CORPORATION
    Inventors: Tzer-Perng CHEN, Jen-Chau WU, Chuan-Cheng TU, Yuh-Ren SHIEH
  • Publication number: 20120181546
    Abstract: A light-emitting diode includes a first electrode, a conductive substrate layer, a reflective layer, a first electrical semiconductor layer, a active layer, a second electrical semiconductor layer, and at least one second electrode. The conductive substrate layer is formed on the first electrode. The reflective layer is formed on the conductive substrate layer. The first electrical semiconductor layer is formed on the reflective layer. The active layer is formed on the first electrical semiconductor layer. The second electrical semiconductor layer is formed on the active layer. The at least one second electrode is formed on the second electrical semiconductor layer. At least one third electrode is additionally disposed under the second electrical semiconductor layer. At least one connection channel is disposed between the second electrode and the third electrode, so that the second electrode and the third electrode are electrically connected.
    Type: Application
    Filed: June 3, 2011
    Publication date: July 19, 2012
    Inventor: Chuan-Cheng TU
  • Patent number: 8101959
    Abstract: An embodiment of present invention discloses a light-emitting device comprising a first multi-layer structure comprising a first lower layer; a first upper layer; and a first active layer able to emit light under a bias voltage and positioned between the first lower layer and the first upper layer; a second thick layer neighboring the first multi-layer structure; a second connection layer associated with the second thick layer; a connective line electrically connected to the second connection layer and the first multi-layer structure; a substrate; and two or more ohmic contact electrodes between the first multi-layer structure and the substrate.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: January 24, 2012
    Assignee: Epistar Corporation
    Inventors: Jin-Ywan Lin, Chuan-Cheng Tu
  • Publication number: 20110300337
    Abstract: A substrate for light-emitting diode (LED) has a top surface being divided into a plurality of first units and a plurality of second units. The first units respectively have a plurality of first microstructures, and the second units respectively have a plurality of second microstructures different from the first microstructures of the first units. Any two adjacent ones of the first units have one second unit located therebetween, while the second units are located around each of the first units. The second units are micro-roughened surfaces that have a relatively small average height difference between tops and bottoms thereof, allowing bridging structures formed on the second units to have bottom portions with uniform thickness, which in turn enables increased good yield of LED production.
    Type: Application
    Filed: April 21, 2011
    Publication date: December 8, 2011
    Inventor: Chuan-Cheng TU
  • Publication number: 20110084304
    Abstract: An embodiment of present invention discloses a light-emitting device comprising a first multi-layer structure comprising a first lower layer; a first upper layer; and a first active layer able to emit light under a bias voltage and positioned between the first lower layer and the first upper layer; a second thick layer neighboring the first multi-layer structure; a second connection layer associated with the second thick layer; a connective line electrically connected to the second connection layer and the first multi-layer structure; a substrate; and two or more ohmic contact electrodes between the first multi-layer structure and the substrate.
    Type: Application
    Filed: September 29, 2010
    Publication date: April 14, 2011
    Applicant: EPISTAR CORPORATION
    Inventors: Jin-Ywan Lin, Chuan-Cheng Tu
  • Patent number: 7923841
    Abstract: A method for bonding a semiconductor structure with a substrate and a high efficiency photonic device manufactured by using the same method are disclosed. The method comprises steps of: providing a semiconductor structure and a substrate; forming a composite bonding layer on the semiconductor structure; and bonding the substrate with the composite bonding layer on the semiconductor structure to form a composite alloyed bonding layer. The semiconductor structure includes a compound semiconductor substrate and a high efficiency photonic device is produced after the compound semiconductor substrate is removed. Besides, the composite bonding layer can be formed on the substrate or formed on both the semiconductor structure and substrate simultaneously.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: April 12, 2011
    Assignee: RGB Consulting Co., Ltd.
    Inventor: Chuan-Cheng Tu
  • Patent number: 7816695
    Abstract: An embodiment of present invention discloses a light-emitting device comprising a first multi-layer structure comprising a first lower layer; a first upper layer; and a first active layer able to emit light under a bias voltage and positioned between the first lower layer and the first upper layer; a second thick layer neighboring the first multi-layer structure; a second connection layer associated with the second thick layer; a connective line electrically connected to the second connection layer and the first multi-layer structure; a substrate; and two or more ohmic contact electrodes between the first multi-layer structure and the substrate.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: October 19, 2010
    Assignee: Epistar Corporation
    Inventors: Jin-Ywan Lin, Chuan-Cheng Tu
  • Patent number: 7745833
    Abstract: The invention provides a semiconductor light emitting device and the fabrication method of the same. The semiconductor light emitting device according to the invention comprises a multi-layer light emitting structure and a heat conducting layer. The multi-layer light emitting structure comprises a first layer. The first layer has an exposed first surface, and it also has a first thermal conductivity. The heat conducting layer is formed on and covers the first layer. The heat conducting layer has a second thermal conductivity, wherein the second thermal conductivity is greater than the first thermal conductivity.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: June 29, 2010
    Assignee: Epistar Corporation
    Inventors: Cheng-Chung Yang, Shao-Kun Ma, Chuan-Cheng Tu, Jen-Chau Wu
  • Patent number: RE43411
    Abstract: A semiconductor structure with two light emitting diodes in series connection is disclosed. The semiconductor structure comprises two light emitting diodes (LEDs) having the same stack layers and abutting each other but spaced by an isolation trench. The stack layers from a bottom thereof include a thermal conductive substrate, an nonconductive protective layer, a metal adhering layer, a mirror protective layer, a p-type ohmic contact epi-layer, a upper cladding layer, an active layer, and a lower cladding layer. Two p-type ohmic contact metal electrodes for two LEDs are formed on an interface between the mirror protective layer and the ohmic contact epi-layer and buried in the mirror protective layer. The stack layers have first trenches formed therein which exposes the upper cladding layer and electrical connecting channels to connect p-type electrodes. The isolation trench is formed by patterning the exposed upper cladding layer until further exposing the nonconductive protective layer.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: May 29, 2012
    Assignee: Epistar Corporation
    Inventors: Jin-Ywan Lin, Chuan-Cheng Tu