Patents by Inventor Chung-Hao WANG

Chung-Hao WANG 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: 20250015246
    Abstract: A semiconductor device is provided, which includes an active region, a first semiconductor layer, a first metal element-containing structure, a first p-type or n-type layer, a second semiconductor layer and an insulating layer. The active region has a first surface and a second surface. The first semiconductor layer is at the first surface. The first metal element-containing structure covers the first semiconductor layer and comprising a first metal element. The first p-type or n-type layer is between the first semiconductor layer and the first metal element-containing structure. The second semiconductor layer is between the first semiconductor layer and the first p-type or n-type layer. The insulating layer covers a portion of the first semiconductor layer and a portion of the second semiconductor. The first p-type or n-type layer includes an oxygen element (O) and a second metal element and has a thickness less than or equal to 20 nm.
    Type: Application
    Filed: September 23, 2024
    Publication date: January 9, 2025
    Inventors: Yu-Tsu LEE, Yi-Yang CHIU, Chun-Wei CHANG, Min-Hao YANG, Wei-Jen HSUEH, Yi-Ming CHEN, Shih-Chang LEE, Chung-Hao WANG
  • Publication number: 20240421262
    Abstract: A light-emitting device comprises a first semiconductor layer; a semiconductor mesa, comprising an active layer and a second semiconductor layer and comprising an inclined surface connected to the first semiconductor layer; a contact electrode covering the second semiconductor layer and comprising an upper surface; a reflective structure comprising a reflective structure opening having a first side surface and a second side surface; a connection layer covering the reflective structure; and a metal reflective layer covering the connection layer; wherein in a cross-sectional view of the light-emitting device, a first portion of a projection of the first side surface to the upper surface of the contact electrode comprises a first length, a second portion of a projection of the second side surface to the upper surface of the contact electrode comprises a second length, and the first length is smaller than the second length.
    Type: Application
    Filed: June 14, 2024
    Publication date: December 19, 2024
    Inventors: Yen-Liang KUO, Chao-Hsing CHEN, Chi-Shiang HSU, Chung-Hao WANG
  • Publication number: 20240421253
    Abstract: An optoelectronic semiconductor device includes a substrate, a first type semiconductor structure located on the substrate, a second type semiconductor structure located on the first type semiconductor structure, an active structure located between the first type semiconductor structure and the second type semiconductor structure, a plurality of contact portions disposed between the first type semiconductor structure and the substrate, and a first conductive oxide layer, a second conductive oxide layer, a first insulating layer and a second insulating layer. The plurality of contact portions is separated from each other, and one of them includes a semiconductor and has a side wall. The first conductive oxide layer contacts the contact portion, and the second conductive oxide layer contacts the first conductive oxide layer. The first insulating layer contacts the side wall. The second insulating layer is disposed between the first insulating layer and the second conductive oxide layer.
    Type: Application
    Filed: August 26, 2024
    Publication date: December 19, 2024
    Inventors: Chung-Hao WANG, Yu-Chi WANG, Yi-Ming CHEN, Yi-Yang CHIU, Chun-Yu LIN
  • Patent number: 12125956
    Abstract: A semiconductor device is provided, which includes a semiconductor stack and a first contact structure. The semiconductor stack includes an active layer and has a first surface and a second surface. The first contact structure is located on the first surface and includes a first semiconductor layer, a first metal element-containing structure and a first p-type or n-type layer. The first metal element-containing structure includes a first metal element. The first p-type or n-type layer physically contacts the first semiconductor layer and the first metal element-containing structure. The first p-type or n-type layer includes an oxygen element (O) and a second metal element and has a thickness less than or equal to 20 nm, and the first semiconductor layer includes a phosphide compound or an arsenide compound.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: October 22, 2024
    Assignee: EPISTAR CORPORATION
    Inventors: Yu-Tsu Lee, Yi-Yang Chiu, Chun-Wei Chang, Min-Hao Yang, Wei-Jen Hsueh, Yi-Ming Chen, Shih-Chang Lee, Chung-Hao Wang
  • Patent number: 12074252
    Abstract: An optoelectronic semiconductor device includes a substrate, a first type semiconductor structure, a second type semiconductor structure, an active structure and a contact structure. The first type semiconductor structure is located on the substrate and has a first protrusion part with a first thickness and a platform part with a second thickness. The second type semiconductor structure is located on the first type semiconductor structure. The active structure is between the first type semiconductor structure and the second type semiconductor structure. The contact structure is disposed between the first type semiconductor structure and the substrate. The second thickness of the platform part is in a range of 0.01 ?m to 1 ?m.
    Type: Grant
    Filed: September 19, 2022
    Date of Patent: August 27, 2024
    Assignee: EPISTAR CORPORATION
    Inventors: Chung-Hao Wang, Yu-Chi Wang, Yi-Ming Chen, Yi-Yang Chiu, Chun-Yu Lin
  • Patent number: 11834496
    Abstract: A composition of a drug carrier, a pharmaceutical composition thereof, a preparation method and a use method thereof are provided. The composition of a drug carrier includes a first mixture and a second mixture. The first mixture includes a hydrophilic polymer, tricalcium phosphate and a water-soluble dispersant. The second mixture includes a water-absorbing material and a divalent cation salt. The pharmaceutical composition includes the composition of a drug carrier above and a drug for preparing an anti-inflammatory or antibiotic medicine. The preparation method of the composition of a drug carrier includes mixing the first mixture and the second mixture. The use method of the composition of a drug carrier includes mixing the first mixture with a drug and then adding the second mixture. Accordingly, topically applying the pharmaceutical composition on a surgical site may effectively release the drug thereon.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: December 5, 2023
    Assignee: EOS BIOMATERIALS INC.
    Inventor: Chung-Hao Wang
  • Publication number: 20230014825
    Abstract: An optoelectronic semiconductor device includes a substrate, a first type semiconductor structure, a second type semiconductor structure, an active structure and a contact structure. The first type semiconductor structure is located on the substrate and has a first protrusion part with a first thickness and a platform part with a second thickness. The second type semiconductor structure is located on the first type semiconductor structure. The active structure is between the first type semiconductor structure and the second type semiconductor structure. The contact structure is disposed between the first type semiconductor structure and the substrate. The second thickness of the platform part is in a range of 0.01 ?m to 1 ?m.
    Type: Application
    Filed: September 19, 2022
    Publication date: January 19, 2023
    Inventors: Chung-Hao WANG, Yu-Chi WANG, Yi-Ming CHEN, Yi-Yang CHIU, Chun-Yu LIN
  • Publication number: 20220302360
    Abstract: A semiconductor device is provided, which includes a semiconductor stack and a first contact structure. The semiconductor stack includes an active layer and has a first surface and a second surface. The first contact structure is located on the first surface and includes a first semiconductor layer, a first metal element-containing structure and a first p-type or n-type layer. The first metal element-containing structure includes a first metal element. The first p-type or n-type layer physically contacts the first semiconductor layer and the first metal element-containing structure. The first p-type or n-type layer includes an oxygen element (O) and a second metal element and has a thickness less than or equal to 20 nm, and the first semiconductor layer includes a phosphide compound or an arsenide compound.
    Type: Application
    Filed: March 16, 2021
    Publication date: September 22, 2022
    Inventors: Yu-Tsu LEE, Yi-Yang CHIU, Chun-Wei CHANG, Min-Hao YANG, Wei-Jen HSUEH, Yi-Ming CHEN, Shih-Chang LEE, Chung-Hao WANG
  • Patent number: 11450787
    Abstract: An optoelectronic semiconductor device includes a semiconductor stack, an electrode, and a plurality of contact portions. The semiconductor stack includes a first type semiconductor structure, an active structure on the first type semiconductor structure, and a second type semiconductor structure on the active structure. The first type semiconductor structure includes a first protrusion part, a second protrusion part and a platform part between the first protrusion part and the second protrusion part. The semiconductor stack includes a thickness. The electrode on the second type semiconductor structure includes a region corresponding to the first protrusion. The contact portions are located at the second protrusion part without being at the first protrusion part. The contact portions are attached to the first type semiconductor structure.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: September 20, 2022
    Assignee: EPISTAR CORPORATION
    Inventors: Chung-Hao Wang, Yu-Chi Wang, Yi-Ming Chen, Yi-Yang Chiu, Chun-Yu Lin
  • Publication number: 20210309731
    Abstract: A composition of a drug carrier, a pharmaceutical composition thereof, a preparation method and a use method thereof are provided. The composition of a drug carrier includes a first mixture and a second mixture. The first mixture includes a hydrophilic polymer, tricalcium phosphate and a water-soluble dispersant. The second mixture includes a water-absorbing material and a divalent cation salt. The pharmaceutical composition includes the composition of a drug carrier above and a drug for preparing an anti-inflammatory or antibiotic medicine. The preparation method of the composition of a drug carrier includes mixing the first mixture and the second mixture. The use method of the composition of a drug carrier includes mixing the first mixture with a drug and then adding the second mixture. Accordingly, topically applying the pharmaceutical composition on a surgical site may effectively release the drug thereon.
    Type: Application
    Filed: December 15, 2020
    Publication date: October 7, 2021
    Inventor: Chung-Hao Wang
  • Patent number: 11106086
    Abstract: An optical plate with protrusions, an optical structure, a backlight module and a display device are provided. The optical plate includes a main body and several protrusions. The main body has a first surface. The protrusions are formed on and projected from the first surface. An area ratio of the protrusions to the first surface is in a range of 0.03˜35%. The protrusions have a pitch in a range of 0.5˜10 mm, and a portion of the first surface other than the protrusions has a first center line mean roughness Ra in a range of 0.01˜0.1 ?m.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: August 31, 2021
    Assignee: CHIMEI CORPORATION
    Inventors: Hsin-Hung Chen, Wei-Chan Tseng, Chung-Hao Wang
  • Patent number: 10994046
    Abstract: A hemostatic material, a preparation method thereof, and a pharmaceutical composition containing the same are introduced. The hemostatic material includes 200 to 1600 parts by weight of water-insoluble gelatin and 100 to 1000 parts by weight of hydrating material. The preparation method for the hemostatic material includes the steps of (a) providing 200 to 1600 parts by weight of water-insoluble gelatin and 100 to 1000 parts by weight of hydrating material; and (b) combining the water-insoluble gelatin with the hydrating material to form a hemostatic material. The pharmaceutical composition includes an aforementioned hemostatic material and active pharmaceutical ingredients. Through the aforementioned hemostatic material, hemostatic products can increase the blood absorption capacity.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: May 4, 2021
    Assignee: GENE'E TECH CO., LTD.
    Inventors: Chung-Hao Wang, Shu-Jyuan Yang, Li-Cheng Pan
  • Publication number: 20210043803
    Abstract: An optoelectronic semiconductor device includes a semiconductor stack, an electrode, and a plurality of contact portions. The semiconductor stack includes a first type semiconductor structure, an active structure on the first type semiconductor structure, and a second type semiconductor structure on the active structure. The first type semiconductor structure includes a first protrusion part, a second protrusion part and a platform part between the first protrusion part and the second protrusion part. The semiconductor stack includes a thickness. The electrode on the second type semiconductor structure includes a region corresponding to the first protrusion. The contact portions are located at the second protrusion part without being at the first protrusion part. The contact portions are attached to the first type semiconductor structure.
    Type: Application
    Filed: August 7, 2020
    Publication date: February 11, 2021
    Inventors: Chung-Hao WANG, Yu-Chi Wang, Yi-Ming Chen, Yi-Yang Chiu, Chun-Yu Lin
  • Publication number: 20210000105
    Abstract: Nanosilver particles, a porous material composite containing same, and a method of producing same are introduced. The method includes the steps of (a) mixing silver salts-containing precursor and protecting agent to form a first liquid mixture; (b) introducing organic reductant into a first reactant to form a second reactant, wherein the silver salts-containing precursor is reduced by the organic reductant to form nanosilver particles; introducing organic reductant into the first liquid mixture to form a second liquid mixture, wherein the silver salts-containing precursor is reduced by the organic reductant to form nanosilver particles; and (c) introducing alkalinizing agent into the nanosilver particles-containing second liquid mixture. The porous material composite includes a porous material and nanosilver particles attached to outer and inner surfaces of the porous material.
    Type: Application
    Filed: July 2, 2019
    Publication date: January 7, 2021
    Inventors: Chung-Hao WANG, Shu-Jyuan YANG, Chien-Ming LEE
  • Patent number: 10709788
    Abstract: A drug carrier, a drug structure, a purpose of the same, a method of making the same, and a method of using the same to inhibit H. pylori are revealed. The drug carrier includes a negatively charged polymer, chitosan and magnetic particles. The purpose of the drug carrier is to make a drug for inhibiting H. pylori. The drug structure includes a negatively charged polymer, chitosan, magnetic particles and an active ingredient. The method of making the drug structure includes mixing the negatively charged polymer solution, the chitosan solution, the magnetic particles and the active ingredient solution to form an initial solution and allowing ingredients in the initial solution to react and thereby form drug structure particles. The method of using the drug structure to inhibit H pylori includes administering the drug structure to an H. pylori colony. The drug carrier and drug structure demonstrate enhanced therapeutic efficacy.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: July 14, 2020
    Assignee: GENE'E TECH CO., LTD.
    Inventors: Chung-Hao Wang, Shu-Jyuan Yang, Chien-Ming Lee
  • Publication number: 20200179286
    Abstract: A drug carrier carrying an active substance and a method preparing the same are provided. The method includes respectively dissolving a negatively charged polymer, sodium tripolyphosphate, and an active substance in a NaOH aqueous solution to increase the encapsulation rate of the active substance in the drug carrier.
    Type: Application
    Filed: February 13, 2020
    Publication date: June 11, 2020
    Inventors: Shu-Jyuan Yang, Chung-Hao Wang
  • Publication number: 20200114009
    Abstract: A drug carrier, a drug structure, a purpose of the same, a method of making the same, and a method of using the same to inhibit H. pylori are revealed. The drug carrier includes a negatively charged polymer, chitosan and magnetic particles. The purpose of the drug carrier is to make a drug for inhibiting H. pylori. The drug structure includes a negatively charged polymer, chitosan, magnetic particles and an active ingredient. The method of making the drug structure includes mixing the negatively charged polymer solution, the chitosan solution, the magnetic particles and the active ingredient solution to form an initial solution and allowing ingredients in the initial solution to react and thereby form drug structure particles. The method of using the drug structure to inhibit H pylori includes administering the drug structure to an H. pylori colony. The drug carrier and drug structure demonstrate enhanced therapeutic efficacy.
    Type: Application
    Filed: January 28, 2019
    Publication date: April 16, 2020
    Inventors: CHUNG-HAO WANG, SHU-JYUAN YANG, CHIEN-MING LEE
  • Publication number: 20190324328
    Abstract: An optical plate with protrusions, an optical structure, a backlight module and a display device are provided. The optical plate includes a main body and several protrusions. The main body has a first surface. The protrusions are formed on and projected from the first surface. An area ratio of the protrusions to the first surface is in a range of 0.03˜35%. The protrusions have a pitch in a range of 0.5˜10 mm, and a portion of the first surface other than the protrusions has a first center line mean roughness Ra in a range of 0.01˜0.1 ?m.
    Type: Application
    Filed: April 18, 2019
    Publication date: October 24, 2019
    Inventors: Hsin-Hung CHEN, Wei-Chan TSENG, Chung-Hao WANG
  • Publication number: 20190216975
    Abstract: A hemostatic material, a preparation method thereof, and a pharmaceutical composition containing the same are introduced. The hemostatic material includes 200 to 1600 parts by weight of water-insoluble gelatin and 100 to 1000 parts by weight of hydrating material. The preparation method for the hemostatic material includes the steps of (a) providing 200 to 1600 parts by weight of water-insoluble gelatin and 100 to 1000 parts by weight of hydrating material; and (b) combining the water-insoluble gelatin with the hydrating material to form a hemostatic material. The pharmaceutical composition includes an aforementioned hemostatic material and active pharmaceutical ingredients. Through the aforementioned hemostatic material, hemostatic products can increase the blood absorption capacity.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 18, 2019
    Inventors: CHUNG-HAO WANG, SHU-JYUAN YANG, LI-CHENG PAN
  • Patent number: 8728366
    Abstract: A method for making an optical plate formed with a microstructure includes: extruding a substrate material and advancing the same to pass through a first nip formed between an embossing roller and a first pressing roller, the embossing roller having a micropatterned surface formed with a plurality of protrusions and a plurality of grooves, the protrusions and the grooves cooperatively defining a microstructure-forming space; applying a photosensitive resin to the micropatterned surface and filling the same into the microstructure-forming space upstream of the first nip to form a plurality of microelements respectively in the microstructure-forming space; allowing the photosensitive resin applied to the micropatterned surface to pass through the first nip together with the substrate material, thereby bonding the microelements to the substrate material; and irradiating and curing the photosensitive resin downstream of the first nip to form the optical plate.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: May 20, 2014
    Assignee: Chi Mei Corporation
    Inventors: Hsin-Hung Chen, Wei-Chan Tseng, Chung-Hao Wang, Chun-Liang Kuo