Patents by Inventor Chih-Chiang Lu

Chih-Chiang Lu 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).

  • Patent number: 10600938
    Abstract: A light-emitting device includes: a light-emitting stack including a first active layer emitting a first light having a first peak wavelength; a diode emitting a second light having a second peak wavelength between 800 nm and 1900 nm; and a tunneling junction between the diode and the light-emitting stack, wherein the tunneling junction includes a first tunneling layer and a second tunneling layer on the first tunneling layer, the first tunneling layer has a band gap and a thickness of the first tunneling layer is greater than a thickness of the second tunneling layer.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: March 24, 2020
    Assignee: EPISTAR CORPORATION
    Inventors: Chih-Chiang Lu, Yi-Chieh Lin, Rong-Ren Lee, Yu-Ren Peng, Ming-Siang Huang, Ming-Ta Chin, Yi-Ching Lee
  • Publication number: 20200066935
    Abstract: This disclosure discloses a light-emitting device. The light-emitting device includes a light-emitting stack having a first-type semiconductor layer, a second-type semiconductor layer, and an active layer formed between the first-type semiconductor layer and the second-type semiconductor layer; and a reflective structure formed on the first-type semiconductor layer and having a first interface and a second interface. A critical angle at the first interface for a light emitted from the light-emitting stack is larger than that at the second interface. The reflective structure electrically connects to the first-type semiconductor layer at the first interface, and an area of the first interface is more than an area of the second interface in a top view.
    Type: Application
    Filed: November 4, 2019
    Publication date: February 27, 2020
    Inventors: Yi-Ming CHEN, Hao-Min KU, Chih-Chiang LU, Tzu-Chieh HSU
  • Patent number: 10553747
    Abstract: A semiconductor device comprises a substrate, a first semiconductor unit on the substrate, and an first adhesion structure between the substrate and the first semiconductor unit, and directly contacting the first semiconductor unit and the substrate, wherein the first adhesion structure comprises an adhesion layer and a sacrificial layer, and the adhesion layer and the sacrificial layer are made of different materials, and wherein an adhesion between the first semiconductor unit and the adhesion layer is different from that between the first semiconductor unit and the sacrificial layer.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: February 4, 2020
    Assignee: Epistar Corporation
    Inventors: Chih-Chiang Lu, Yi-Ming Chen, Chun-Yu Lin, Ching-Pei Lin, Chung-Hsun Chien, Chien-Fu Huang, Hao-Min Ku, Min-Hsun Hsieh, Tzu-Chieh Hsu
  • Patent number: 10553761
    Abstract: A light-emitting device includes a metal connecting structure; a metal reflective layer on the metal connecting structure; a barrier layer between the metal connecting structure and the metal reflective layer; a light-emitting stack on the metal reflective layer; a dielectric layer between the light-emitting stack and the metal reflective layer, and a first extension electrode and a second extension electrode on the light-emitting stack and away from the metal reflective layer. The dielectric layer includes a first part and a second part separated from the first part from a cross section of the light-emitting device. The first extension electrode and the second extension electrode respectively align with the first part and the second part. From a cross section of the light-emitting stack, the first extension electrode has a first width and the first part has a second width larger than the first width.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: February 4, 2020
    Assignee: Epistar Corporation
    Inventors: Fu Chun Tsai, Wen Luh Liao, Shih I Chen, Chia Liang Hsu, Chih Chiang Lu
  • Publication number: 20200006595
    Abstract: The present disclosure provides a light-emitting device and manufacturing method thereof. The light-emitting device comprising: a light-emitting stack; and a semiconductor layer having a first surface connecting to the light-emitting stack, a second surface opposite to the first surface, and a void; wherein the void comprises a bottom part near the first surface and an opening on the second surface, and a dimension of the bottom part is larger than the dimension of the opening.
    Type: Application
    Filed: September 12, 2019
    Publication date: January 2, 2020
    Inventors: Wen-Luh LIAO, Chih-Chiang LU, Shih-Chang LEE, Hung-Ta CHENG, Hsin-Chan CHUNG, Yi-Chieh LIN
  • Patent number: 10511140
    Abstract: A light-emitting device is provided. The light-emitting device comprises: a substrate; and multiple radiation emitting regions arranged on the substrate, and comprising: a first radiation emitting region capable of emitting coherent light and emits a coherent light when driven by a first current; a second radiation emitting region capable of emitting coherent light and emits an incoherent light when driven by the first current, wherein each of the first radiation emitting region and the second emitting region comprises epitaxial structure comprising a first DBR stack, a light-emitting structure, and a second DBR stack.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: December 17, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Tzu-Chieh Hsu, Yi-Wen Huang, Yi-Hung Lin, Chih-Chiang Lu
  • Patent number: 10461223
    Abstract: A semiconductor device includes a semiconductor stack comprising a surface, and an electrode structure comprises an electrode pad formed on the surface, and the electrode structure further comprises a first extending electrode, a second extending electrode and a third extending electrode connecting to the electrode pad. The first extending electrode is closer to a periphery of the surface than the third extending electrode is, and the second extending electrode is between the first extending electrode and the third extending electrode. From a top view of the semiconductor device, the first extending electrode, the second extending electrode and the third extending electrode respectively include a first curve having a first angle ?1, a second curve having a second angle ?2 and a third curve having a third angle ?3, wherein ?3>?2>?1 .
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: October 29, 2019
    Assignee: Epistar Corporation
    Inventors: Yung-Fu Chang, Hsin-Chan Chung, Hung-Ta Cheng, Wen-Luh Liao, Shih-Chang Lee, Chih-Chiang Lu, Yi-Ming Chen, Yao-Ning Chan, Chun-Fu Tsai
  • Patent number: 10453995
    Abstract: The present disclosure provides a light-emitting device and manufacturing method thereof. The light-emitting device comprising: a light-emitting stack; and a semiconductor layer having a first surface connecting to the light-emitting stack, a second surface opposite to the first surface, and a void; wherein the void comprises a bottom part near the first surface and an opening on the second surface, and a dimension of the bottom part is larger than the dimension of the opening.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: October 22, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Wen-Luh Liao, Chih-Chiang Lu, Shih-Chang Lee, Hung-Ta Cheng, Hsin-Chan Chung, Yi-Chieh Lin
  • Publication number: 20190296186
    Abstract: The present disclosure provides a light-emitting device comprises a substrate with a topmost surface; a first semiconductor stack arranged on the substrate, and comprising a first light-emitting layer separated from the topmost surface by a first distance; a second semiconductor stack arranged on the substrate, and comprising a second light-emitting layer separated from the topmost surface by a second distance; and a third semiconductor stack arranged on the substrate, and comprising third light-emitting layer separated from the topmost surface by a third distance; wherein the first semiconductor stack, the second semiconductor stack, and the third semiconductor stack are configured to emit different color lights; and wherein the second distance is different form the first distance and the third distance.
    Type: Application
    Filed: June 10, 2019
    Publication date: September 26, 2019
    Inventors: Chien-Fu HUANG, Chih-Chiang LU, Chun-Yu LIN, Hsin-Chih CHIU
  • Publication number: 20190259906
    Abstract: A semiconductor light-emitting device comprises a substrate; a first adhesive layer on the substrate; multiple epitaxial units on the first adhesive layer; a second adhesive layer on the multiple epitaxial units; multiple first electrodes between the first adhesive layer and the multiple epitaxial units, and contacting the first adhesive layer and the multiple epitaxial units; and multiple second electrodes between the second adhesive layer and the multiple epitaxial units, and contacting the second adhesive layer and the multiple epitaxial units; wherein the multiple epitaxial units are totally separated.
    Type: Application
    Filed: May 7, 2019
    Publication date: August 22, 2019
    Inventors: Hsin-Chih Chiu, Chih-Chiang Lu, Chun-Yu Lin, Ching-Huai Ni, Yi-Ming Chen, Tzu-Chieh Hsu, Ching-Pei Lin
  • Patent number: 10327040
    Abstract: Techniques for low latency streaming, for example in a broadcasting environment, are described herein. In some examples, one or more individual renditions may be encoded into multiple rendition versions associated with different respective latencies. Also, in some examples, one or more individual renditions may be encoded into multiple rendition versions having different respective amounts of forward error correction (FEC), for example by an edge node of a video streaming service. Also, in some examples, video may be broadcast using a protocol that does not require retransmission of lost packets, such as Web Real-Time Communication (WebRTC), which is commonly used for point-to-point transmissions. Also, in some examples, one or more servers may receive quality of service feedback information from each player to which video content is transmitted. The one or more servers may use this feedback information to select and switch between appropriate renditions and rendition versions for each player.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: June 18, 2019
    Assignee: Twitch Interactive, Inc.
    Inventors: Yueshi Shen, Martin Hess, Shawn Hsu, Eran Ambar, Abhinav Kapoor, Jorge Arturo Villatoro, Spencer Nelson, Jeffrey Garneau, Cyrus Hall, Jyotindra Vasudeo, Andrew Francis, Yuechuan Li, Chih-Chiang Lu
  • Patent number: 10319877
    Abstract: The present disclosure provides a light-emitting device including a substrate, a first block of semiconductor stack on the substrate, a second block of semiconductor stack on the substrate and a third block of semiconductor stack on the substrate. The first block of semiconductor stack includes a first emitting wavelength and a first surface away from the substrate. The second block of semiconductor stack on the substrate includes a second emitting wavelength and a second surface away from the substrate. The third block of semiconductor stack includes s a third emitting wavelength and a third surface away from the substrate. The second surface and the first surface are non-coplanar and the third surface and the first surface are coplanar. The first emitting wavelength, the second emitting wavelength and the third emitting wavelength are different.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: June 11, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Chien-Fu Huang, Chih-Chiang Lu, Chun-Yu Lin, Hsin-Chih Chiu
  • Publication number: 20190172977
    Abstract: A light-emitting device includes a metal connecting structure; a metal reflective layer on the metal connecting structure; a barrier layer between the metal connecting structure and the metal reflective layer; a light-emitting stack on the metal reflective layer; a dielectric layer between the light-emitting stack and the metal reflective layer, and a first extension electrode and a second extension electrode on the light-emitting stack and away from the metal reflective layer. The dielectric layer includes a first part and a second part separated from the first part from a cross section of the light-emitting device. The first extension electrode and the second extension electrode respectively align with the first part and the second part. From a cross section of the light-emitting stack, the first extension electrode has a first width and the first part has a second width larger than the first width.
    Type: Application
    Filed: January 28, 2019
    Publication date: June 6, 2019
    Inventors: Fu Chun TSAI, Wen Luh LIAO, Shih I CHEN, Chia Liang HSU, Chih Chiang LU
  • Publication number: 20190157498
    Abstract: A light-emitting device includes a transparent substrate, a transparent adhesive layer on the transparent substrate, a first transparent conductive layer on the transparent adhesive layer, a multi-layer epitaxial structure and a first electrode on the transparent conductive layer, and a second electrode on the multi-layer epitaxial structure. The multi-layer epitaxial structure includes a light-emitting layer. The transparent substrate has a first surface facing the transparent adhesive layer and a second surface opposite to the first surface, wherein the area of the second surface is larger than that of the light-emitting layer, and the area ratio thereof is not less than 1.6.
    Type: Application
    Filed: January 22, 2019
    Publication date: May 23, 2019
    Inventors: Min-Hsun HSIEH, Chih-Chiang LU, Ching-Pu TAI
  • Publication number: 20190158352
    Abstract: A light-emitting device comprises a first light-emitting semiconductor stack comprising a first active layer; a second light-emitting semiconductor stack below the first light-emitting semiconductor stack, wherein the second light-emitting semiconductor stack comprises a second active layer; a reflector between the first light-emitting semiconductor stack and the second light-emitting semiconductor stack; a protecting layer between the reflector and the second light-emitting semiconductor stack; and wherein the first light-emitting semiconductor stack further comprises a first semiconductor layer and a second semiconductor layer sandwiching the first active layer, the second light-emitting semiconductor stack further comprises a third semiconductor layer and a fourth semiconductor layer sandwiching the second active layer, wherein the second semiconductor layer has a first band gap, the third semiconductor layer has a second band gap, and the protecting layer has a third band gap between the first band gap an
    Type: Application
    Filed: January 25, 2019
    Publication date: May 23, 2019
    Inventors: Chih-Chiang LU, Yi-Chieh LIN, Wen-Luh LIAO, Shou-Lung CHEN, Chien-Fu HUANG
  • Patent number: 10283669
    Abstract: A semiconductor light-emitting device comprises a substrate; a first adhesive layer on the substrate; multiple epitaxial units on the first adhesive layer; a second adhesive layer on the multiple epitaxial units; multiple first electrodes between the first adhesive layer and the multiple epitaxial units, and contacting the first adhesive layer and the multiple epitaxial units; and multiple second electrodes between the second adhesive layer and the multiple epitaxial units, and contacting the second adhesive layer and the multiple epitaxial units; wherein the multiple epitaxial units are totally separated.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: May 7, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Hsin-Chih Chiu, Chih-Chiang Lu, Chun-Yu Lin, Ching-Huai Ni, Yi-Ming Chen, Tzu-Chieh Hsu, Ching-Pei Lin
  • Publication number: 20190103535
    Abstract: A semiconductor device comprising: a substrate; a first reflector on the substrate; a second reflector on the first reflector; a semiconductor system directly contacting the first reflector and the second reflector and comprising a first side wall; and an insulating layer covering the first side wall and formed between the substrate and the first reflector.
    Type: Application
    Filed: November 15, 2018
    Publication date: April 4, 2019
    Inventors: Chih-Chiang LU, Wei-Chih PENG, Shiau-Huei SAN, Min-Hsun HSIEH
  • Patent number: 10236411
    Abstract: A light-emitting device comprises a first light-emitting semiconductor stack comprising a first active layer; a second light-emitting semiconductor stack below the first light-emitting semiconductor stack, wherein the second light-emitting semiconductor stack comprises a second active layer; a reflector between the first light-emitting semiconductor stack and the second light-emitting semiconductor stack; a protecting layer between the reflector and the second light-emitting semiconductor stack; and wherein the first light-emitting semiconductor stack further comprises a first semiconductor layer and a second semiconductor layer sandwiching the first active layer, the second light-emitting semiconductor stack further comprises a third semiconductor layer and a fourth semiconductor layer sandwiching the second active layer, wherein the second semiconductor layer has a first band gap, the third semiconductor layer has a second band gap, and the protecting layer has a third band gap between the first band gap an
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: March 19, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Chih-Chiang Lu, Yi-Chieh Lin, Wen-Luh Liao, Shou-Lung Chen, Chien-Fu Huang
  • Publication number: 20190081213
    Abstract: A semiconductor device includes a semiconductor stack comprising a surface, and an electrode structure comprises an electrode pad formed on the surface, and the electrode structure further comprises a first extending electrode, a second extending electrode and a third extending electrode connecting to the electrode pad. The first extending electrode is closer to a periphery of the surface than the third extending electrode is, and the second extending electrode is between the first extending electrode and the third extending electrode.
    Type: Application
    Filed: September 12, 2018
    Publication date: March 14, 2019
    Inventors: Yung-Fu CHANG, Hsin-Chan CHUNG, Hung-Ta CHENG, Wen-Luh LIAO, Shih-Chang LEE, Chih-Chiang LU, Yi-Ming CHEN, Yao-Ning CHAN, Chun-Fu TSAI
  • Patent number: 10230019
    Abstract: The present disclosure provides a light-emitting device and manufacturing method thereof. The light-emitting device comprises: a metal connecting structure; a barrier layer on the metal connecting structure, the barrier layer comprising a first metal multilayer on the metal connecting structure and a second metal multilayer on the first metal multilayer; a metal reflective layer on the barrier layer; and a light-emitting stack electrically coupled to the metal reflective layer, wherein the first metal multilayer comprises a first metal layer comprising a first metal material and a second metal layer comprising a second metal material, and the second metal multilayer comprises a third metal layer comprising a third metal material and a fourth metal layer comprising a fourth metal material.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: March 12, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Fu Chun Tsai, Wen Luh Liao, Shih I Chen, Chia Liang Hsu, Chih Chiang Lu