Patents by Inventor Yung-Fu Chang

Yung-Fu Chang 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: 20240136463
    Abstract: This disclosure discloses an optical sensing device. The device includes a carrier body; a first light-emitting device disposed on the carrier body; and a light-receiving device including a group III-V semiconductor material disposed on the carrier body, including a light-receiving surface having an area, wherein the light-receiving device is capable of receiving a first received wavelength having a largest external quantum efficiency so the ratio of the largest external quantum efficiency to the area is ?13.
    Type: Application
    Filed: December 20, 2023
    Publication date: April 25, 2024
    Applicant: EPISTAR CORPORATION
    Inventors: Yi-Chieh LIN, Shiuan-Leh LIN, Yung-Fu CHANG, Shih-Chang LEE, Chia-Liang HSU, Yi HSIAO, Wen-Luh LIAO, Hong-Chi SHIH, Mei-Chun LIU
  • Patent number: 11955397
    Abstract: A semiconductor structure is provided. The semiconductor structure includes a substrate, a channel layer, a barrier layer, a compound semiconductor layer, a gate electrode, and a stack of dielectric layers. The channel layer is disposed on the substrate. The barrier layer is disposed on the channel layer. The compound semiconductor layer is disposed on the barrier layer. The gate electrode is disposed on the compound semiconductor layer. The stack of dielectric layers is disposed on the gate electrode. The stack of dielectric layers includes layers having different etching rates.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: April 9, 2024
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Shin-Cheng Lin, Cheng-Wei Chou, Ting-En Hsieh, Yi-Han Huang, Kwang-Ming Lin, Yung-Fong Lin, Cheng-Tao Chou, Chi-Fu Lee, Chia-Lin Chen, Shu-Wen Chang
  • Patent number: 11894481
    Abstract: This disclosure discloses an optical sensing device. The device includes a carrier body having a topmost surface; a first light-emitting device disposed on the carrier body and having a light-emitting surface; and a light-receiving device comprising a group III-V semiconductor material disposed on the carrier body and having a light-receiving surface. The light-emitting surface is separated from the topmost surface by first distant H1, the light-receiving surface is separated from the topmost surface by a second distance H2, and H1 is different from H2.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: February 6, 2024
    Assignee: EPISTAR CORPORATION
    Inventors: Yi-Chieh Lin, Shiuan-Leh Lin, Yung-Fu Chang, Shih-Chang Lee, Chia-Liang Hsu, Yi Hsiao, Wen-Luh Liao, Hong-Chi Shih, Mei-Chun Liu
  • Patent number: 11318154
    Abstract: A method of preventing or treating a subject suffering from Clostiridium difficile infection or its associated symptom includes administering a therapeutic effective amount of a HMGB1 inhibitor to the subject. A method of inhibiting toxin-induced cytotoxic effect in colon cells includes contacting the colon cells with an effective amount of a HMGB1 inhibitor.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: May 3, 2022
    Assignees: City University of Hong Kong, Cornell University
    Inventors: Linfeng Huang, Yung-fu Chang, Yingxue Li, Yutian Ren, Wei Xu
  • Publication number: 20220102582
    Abstract: A semiconductor structure includes a carrier, a bonding structure, a semiconductor stack, a supporting element and a bridge layer. The bonding structure is on the carrier and has an upper surface. The semiconductor stack is on the bonding structure. The supporting element is on the bonding structure and has a side wall. The bridge layer has a first portion directly connected to the supporting element, a second portion connected to the first portion and a third portion connected to the second portion. The second portion and the third portion of the bridge layer are suspended above the upper surface of the bonding structure. The first portion of the bridge layer directly contacts the side wall of the supporting element.
    Type: Application
    Filed: December 14, 2021
    Publication date: March 31, 2022
    Inventors: Yung-Fu CHANG, Fan-Lei WU, Shih-Chang LEE, Wen-Luh LIAO, Hung-Ta CHENG, Chih-Chaing YANG, Yao-Ru CHANG, Yi HSIAO, Hsiang CHANG
  • Publication number: 20220059717
    Abstract: This disclosure discloses an optical sensing device. The device includes a carrier body having a topmost surface; a first light-emitting device disposed on the carrier body and having a light-emitting surface; and a light-receiving device comprising a group III-V semiconductor material disposed on the carrier body and having a light-receiving surface. The light-emitting surface is separated from the topmost surface by first distant H1, the light-receiving surface is separated from the topmost surface by a second distance H2, and H1 is different from H2.
    Type: Application
    Filed: October 26, 2021
    Publication date: February 24, 2022
    Applicant: EPISTAR CORPORATION
    Inventors: Yi-Chieh LIN, Shiuan-Leh LIN, Yung-Fu CHANG, Shih-Chang LEE, Chia-Liang HSU, Yi HSIAO, Wen-Luh LIAO, Hong-Chi SHIH, Mei-Chun LIU
  • Patent number: 11227978
    Abstract: A semiconductor device and a package structure are provided. The semiconductor device includes a substrate, a light-emitting structure, a first semiconductor layer, a second semiconductor layer and a first electrode. The light-emitting structure is on the substrate. The first semiconductor layer is on the light-emitting structure. The second semiconductor layer is between the first semiconductor layer and the light-emitting structure. The first electrode is on the second semiconductor layer. At least a portion of the first electrode is separated from the first semiconductor layer.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: January 18, 2022
    Assignee: Epistar Corporation
    Inventors: Wen-Luh Liao, Cheng-Long Yeh, Ko-Yin Lai, Yao-Ru Chang, Yung-Fu Chang, Yi Hsiao, Shih-Chang Lee
  • Patent number: 11227975
    Abstract: A semiconductor structure includes a carrier having a surface, a supporting element, a semiconductor stack and a bridge layer. The supporting element is on the surface. The semiconductor stack is on the surface and has a side surface. The bridge layer includes a first portion connecting to the supporting element, a second portion, and a third portion connecting to the semiconductor stack. The second portion is extended from the third portion toward the first portion and is protruded from the side surface.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: January 18, 2022
    Assignee: Epistar Corporation
    Inventors: Yung-Fu Chang, Fan-Lei Wu, Shih-Chang Lee, Wen-Luh Liao, Hung-Ta Cheng, Chih-Chaing Yang, Yao-Ru Chang, Yi Hsiao, Hsiang Chang
  • Patent number: 11158757
    Abstract: This disclosure discloses an optical sensing device. The device includes a carrier body; a first light-emitting device disposed on the carrier body; and a light-receiving device including a group III-V semiconductor material disposed on the carrier body, including a light-receiving surface having an area, wherein the light-receiving device is capable of receiving a first received wavelength having a largest external quantum efficiency so the ratio of the largest external quantum efficiency to the area is ?13.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: October 26, 2021
    Assignee: EPISTAR CORPORATION
    Inventors: Yi-Chieh Lin, Shiuan-Leh Lin, Yung-Fu Chang, Shih-Chang Lee, Chia-Liang Hsu, Yi Hsiao, Wen-Luh Liao, Hong-Chi Shih, Mei-Chun Liu
  • Patent number: 11121285
    Abstract: A semiconductor device includes a conductive layer, a semiconductor stack, a first contact structure, an intermediate structure, a second contact structure, a first electrode and a second electrode. The semiconductor stack is disposed on the conductive layer. The first contact structure is disposed on the semiconductor stack. The intermediate structure encloses the first contact structure. The second contact structure is between the conductive layer and the semiconductor stack. The first electrode is on the conductive layer and separated from the semiconductor stack. The second electrode is on the intermediate structure.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: September 14, 2021
    Assignee: Epistar Corporation
    Inventors: Yung-Fu Chang, Hui-Fang Kao, Yi-Tang Lai, Shih-Chang Lee, Wen-Luh Liao, Mei Chun Liu, Yao-Ru Chang, Yi Hisao
  • Publication number: 20210046099
    Abstract: A method of preventing or treating a subject suffering from Clostiridium difficile infection or its associated symptom includes administering a therapeutic effective amount of a HMGB1 inhibitor to the subject. A method of inhibiting toxin-induced cytotoxic effect in colon cells includes contacting the colon cells with an effective amount of a HMGB1 inhibitor.
    Type: Application
    Filed: August 15, 2019
    Publication date: February 18, 2021
    Inventors: Linfeng Huang, Yung-fu Chang, Yingxue Li, Yutian Ren, Wei Xu
  • Publication number: 20200365769
    Abstract: A semiconductor device is provided, which includes a base, a semiconductor structure and a conductive reflective structure. The base has a first surface and a second surface opposite to the first surface. The semiconductor structure is located on the first surface. The conductive reflective structure is located on the second surface and includes a metal oxide structure and a metal structure. The metal oxide structure is located between the metal structure and the base. The metal oxide structure physically contacts the second surface.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 19, 2020
    Inventors: Yao-Ru CHANG, Wen-Luh LIAO, Yung-Fu CHANG, Hsiang CHANG, Meng-Yang CHEN, Yun-Hsin PANG, Yi HSIAO
  • Patent number: 10749077
    Abstract: An optoelectronic device includes a semiconductor stack including a first surface and a second surface opposite to the first surface; a first contact layer on the first surface; and a second contact layer on the second surface. The second contact layer is not overlapped with the first contact layer in a vertical direction. The second contact layer includes a plurality of dots separating to each other and formed of semiconductor material.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: August 18, 2020
    Assignee: EPISTAR CORPORATION
    Inventors: Chun-Yu Lin, Yung-Fu Chang, Rong-Ren Lee, Kuo-Feng Huang, Cheng-Long Yeh, Yi-Ching Lee, Ming-Siang Huang, Ming-Tzung Liou
  • Patent number: 10741721
    Abstract: A light-emitting device is provided. The light-emitting device comprises a substrate; an insulating layer on the substrate, wherein the insulating layer comprises a first hole; a light-emitting stack on the insulating layer and comprising an active region comprising a top surface, wherein the top surface comprises a first part and a second part; and an opaque layer covering the first part of the top surface and exposing the second part of the top surface, wherein the second part is directly above the first hole.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: August 11, 2020
    Assignee: EPISTAR Corporation
    Inventors: Cheng-Feng Yu, Ching-Yuan Tsai, Yao-Ru Chang, Hsin-Chan Chung, Shih-Chang Lee, Wen-Luh Liao, Cheng-Hsing Chiang, Kuo-Feng Huang, Hsu-Hsuan Teng, Hung-Ta Cheng, Yung-Fu Chang
  • Publication number: 20200168757
    Abstract: This disclosure discloses an optical sensing device. The device includes a carrier body; a first light-emitting device disposed on the carrier body; and a light-receiving device including a group III-V semiconductor material disposed on the carrier body, including a light-receiving surface having an area, wherein the light-receiving device is capable of receiving a first received wavelength having a largest external quantum efficiency so the ratio of the largest external quantum efficiency to the area is ?13.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 28, 2020
    Inventors: Yi-Chieh LIN, Shiuan-Leh LIN, Yung-Fu CHANG, Shih-Chang LEE, Chia-Liang HSU, Yi HSIAO, Wen-Luh LIAO, Hong-Chi SHIH, Mei-Chun LIU
  • Publication number: 20200152836
    Abstract: A semiconductor device and a package structure are provided. The semiconductor device includes a substrate, a light-emitting structure, a first semiconductor layer, a second semiconductor layer and a first electrode. The light-emitting structure is on the substrate. The first semiconductor layer is on the light-emitting structure. The second semiconductor layer is between the first semiconductor layer and the light-emitting structure. The first electrode is on the second semiconductor layer. At least a portion of the first electrode is separated from the first semiconductor layer.
    Type: Application
    Filed: November 11, 2019
    Publication date: May 14, 2020
    Inventors: Wen-Luh LIAO, Cheng-Long YEH, Ko-Yin LAI, Yao-Ru CHANG, Yung-Fu CHANG, Yi HSIAO, Shih-Chang LEE
  • Publication number: 20200152831
    Abstract: A semiconductor device includes a conductive layer, a semiconductor stack, a first contact structure, an intermediate structure, a second contact structure, a first electrode and a second electrode. The semiconductor stack is disposed on the conductive layer. The first contact structure is disposed on the semiconductor stack. The intermediate structure encloses the first contact structure. The second contact structure is between the conductive layer and the semiconductor stack. The first electrode is on the conductive layer and separated from the semiconductor stack. The second electrode is on the intermediate structure.
    Type: Application
    Filed: November 11, 2019
    Publication date: May 14, 2020
    Inventors: Yung-Fu CHANG, Hui-Fang KAO, Yi-Tang LAI, Shih-Chang LEE, Wen-Luh LIAO, Mei Chun LIU, Yao-Ru CHANG, Yi HISAO
  • Publication number: 20200075807
    Abstract: A semiconductor structure includes a carrier having a surface, a supporting element, a semiconductor stack and a bridge layer. The supporting element is on the surface. The semiconductor stack is on the surface and has a side surface. The bridge layer includes a first portion connecting to the supporting element, a second portion, and a third portion connecting to the semiconductor stack. The second portion is extended from the third portion toward the first portion and is protruded from the side surface.
    Type: Application
    Filed: August 23, 2019
    Publication date: March 5, 2020
    Inventors: Yung-Fu CHANG, Fan-Lei WU, Shih-Chang LEE, Wen-Luh LIAO, Hung-Ta CHENG, Chih-Chaing YANG, Yao-Ru CHANG, Yi HSIAO, Hsiang CHANG
  • Patent number: 10580937
    Abstract: An optoelectronic device includes a semiconductor structure having a first side and a second side opposite to the first side, a first pad at the first side, a first finger connected to the electrode pad and having a first width, an insulating layer at the second side and comprising a first part under the first finger, the first part having a bottom surface with a second width larger than the first width and a side surface inclined to the bottom surface, and a contact layer covering the bottom surface and the side surface.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: March 3, 2020
    Assignee: EPISTAR CORPORATION
    Inventors: Chun-Yu Lin, Yung-Fu Chang, Rong-Ren Lee, Kuo-Feng Huang, Cheng-Long Yeh, Yi-Ching Lee, Ming-Siang Huang, Ming-Tzung Liou
  • 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