Patents by Inventor Wen-Luh Liao

Wen-Luh Liao 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: 9159871
    Abstract: A manufacturing method of a light-emitting device is disclosed. The method provides for patterning a semiconductor stack on a first substrate in order to form multiple light-emitting mesas. A second substrate is then bonded to the multiple light-emitting mesas and a reflective structure is formed on the first substrate. A metal layer is then applied on the reflective structure and the metal layer is patterned to form multiple metal mesas corresponding to the multiple light-emitting mesas, with a portion of the reflective structure being exposed.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: October 13, 2015
    Assignee: EPISTAR CORPORATION
    Inventors: Kuang-Ping Chao, Wen-Luh Liao, Fu-Chun Tsai, Shih-I Chen, Chia-Liang Hsu
  • Patent number: 9153747
    Abstract: A light-emitting element includes a light-emitting stack which has an active layer, and a non-oxide insulative layer below the light-emitting stack, wherein a refractive index of the non-oxide insulative layer is less than 1.4.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: October 6, 2015
    Assignee: EPISTAR CORPORATION
    Inventors: Wen-Luh Liao, Chien-Chung Hsu, Yao-Ru Chang, Shih-I Chen, Chia-Liang Hsu
  • Publication number: 20150200331
    Abstract: A manufacturing method of a light-emitting device is disclosed. The method provides for patterning a semiconductor stack on a first substrate in order to form multiple light-emitting mesas. A second substrate is then bonded to the multiple light-emitting mesas and a reflective structure is formed on the first substrate. A metal layer is then applied on the reflective structure and the metal layer is patterned to form multiple metal mesas corresponding to the multiple light-emitting mesas, with a portion of the reflective structure being exposed.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 16, 2015
    Applicant: Epistar Corporation
    Inventors: Kuang-Ping CHAO, Wen-Luh LIAO, Fu-Chun TSAI, Shih-I CHEN, Chia-Liang HSU
  • Publication number: 20150144980
    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: Application
    Filed: November 28, 2014
    Publication date: May 28, 2015
    Inventors: Fu Chun TSAI, Wen Luh LIAO, Shih I CHEN, Chia Liang HSU, Chih Chiang LU
  • Publication number: 20150144975
    Abstract: A light-emitting device comprises a substrate; and a semiconductor stack comprising a III-V group material formed on the substrate, wherein the substrate comprises a first amorphous portion adjacent to the semiconductor stack, and a portion having a material different from that of the first amorphous portion and away from the semiconductor stack, wherein the first amorphous portion has a first refractive index, the portion has a second refractive index, and the first refractive index is higher than the second refractive index and lower than a refractive index of the semiconductor stack.
    Type: Application
    Filed: November 25, 2013
    Publication date: May 28, 2015
    Applicant: EPISTAR CORPORATION
    Inventors: Fu-Chun TSAI, Wen-Luh LIAO, Yao-Ru CHANG, Shih-I CHEN, Chih-Chiang LU
  • Publication number: 20150108494
    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: October 21, 2014
    Publication date: April 23, 2015
    Inventors: Wen-Luh LIAO, Chih-Chiang LU, Shih-Chang LEE, Hung-Ta CHENG, Hsin-Chan CHUNG, Yi-Chieh LIN
  • Publication number: 20150102285
    Abstract: A light-emitting device comprises: a light-emitting stack having an active layer; a transparent insulating layer on the light-emitting stack; and an electrode structure having a first electrode on the transparent insulating layer; wherein a surface area of a surface of the first electrode distal from the transparent insulating layer is smaller than a surface area of a surface of the transparent insulating layer distal from the light-emitting stack, the reflectivity of the transparent insulating layer is between 1 and 3.4 both inclusive, and the transmittance of the transparent insulating layer is greater than 80%.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 16, 2015
    Inventors: Wen-Luh LIAO, Hung-Ta CHENG, Yao-Ru CHANG, Shih-I CHEN, Chia-Liang HSU
  • Publication number: 20150034996
    Abstract: A light-emitting device comprises a substrate; a first semiconductor stack formed on the substrate; a connecting part formed on the first semiconductor stack; and a plurality of droplets formed near the connecting part, wherein the plurality of droplets comprises a material same as that of the connecting part.
    Type: Application
    Filed: August 1, 2013
    Publication date: February 5, 2015
    Applicant: Epistar Corporation
    Inventors: Kuang-Ping CHAO, Wen-Luh LIAO, Shih-I CHEN, Chia-Liang HSU
  • Publication number: 20150014721
    Abstract: A light-emitting element includes a light-emitting stack which has an active layer, and a non-oxide insulative layer below the light-emitting stack, wherein a refractive index of the non-oxide insulative layer is less than 1.4.
    Type: Application
    Filed: June 11, 2014
    Publication date: January 15, 2015
    Inventors: Wen-Luh LIAO, Chien-Chung HSU, Yao-Ru CHANG, Shih-I CHEN, Chia-Liang HSU
  • Publication number: 20140346544
    Abstract: A light-emitting element includes a reflective layer; a first transparent layer on the reflective layer; a light-emitting stack having an active layer on the first transparent layer; and a cavity formed in the first transparent layer.
    Type: Application
    Filed: May 23, 2014
    Publication date: November 27, 2014
    Applicant: EPISTAR CORPORATION
    Inventors: Wen-Luh LIAO, Shao-Ping LU, Hung-Ta CHEN, Shih-I CHEN, Chia-Liang HSU, Shou-Chin WEI, Ching-Pei LIN, Yu-Ren PENG, Chien-Fu HUANG, Wei-Yu CHEN, Chun-Hsien CHANG
  • Patent number: D694723
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: December 3, 2013
    Assignee: Epistar Corporation
    Inventors: Chun-Yi Wu, Wen-Luh Liao, Hung-Ta Cheng
  • Patent number: D707641
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: June 24, 2014
    Assignee: Epistar Corporation
    Inventors: Shao-Ping Lu, Wen-Luh Liao, Shih-I Chen, Chia-Liang Hsu