Patents by Inventor Cheng-Hao Chang

Cheng-Hao 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).

  • Patent number: 12080472
    Abstract: A method to form an inductor, the method comprising: forming a metal structure by removing unwanted portions of the metal plate to form a first electrode, a second electrode, and a bare conductor wire between the first electrode and the second electrode, wherein a first thickness of the first electrode is greater than a thickness of the bare conductor wire, and a second thickness of the second electrode is greater than said thickness of the bare conductor wire; and forming a magnetic body to encapsulate the bare conductor wire, and a least one portion of the first electrode and a least one portion of the second electrode.
    Type: Grant
    Filed: September 6, 2023
    Date of Patent: September 3, 2024
    Assignee: CYNTEC CO., LTD.
    Inventors: Pei-I Wei, Cheng-Hao Chang, Shing Tak Li
  • Publication number: 20240006116
    Abstract: A method to form an inductor, the method comprising: forming a metal structure by removing unwanted portions of the metal plate to form a first electrode, a second electrode, and a bare conductor wire between the first electrode and the second electrode, wherein a first thickness of the first electrode is greater than a thickness of the bare conductor wire, and a second thickness of the second electrode is greater than said thickness of the bare conductor wire; and forming a magnetic body to encapsulate the bare conductor wire, and a least one portion of the first electrode and a least one portion of the second electrode.
    Type: Application
    Filed: September 6, 2023
    Publication date: January 4, 2024
    Inventors: Pei-I Wei, Cheng-Hao Chang, Shing Tak Li
  • Patent number: 11783992
    Abstract: An inductive component is disclosed, the inductive component comprising a metal structure, comprising a bare conductor wire, a first electrode and a second electrode, wherein the first electrode and the second electrode are integrally formed with the bare conductor wire, wherein a first thickness of the first electrode is greater than that of the bare conductor wire and a second thickness of the second electrode is greater than that of the bare conductor wire; and a magnetic body encapsulating the bare conductor wire, at least one portion of the first electrode, and at least one portion of the second electrode, wherein the first lateral surface of the first electrode and the second lateral surface of the second electrode are embedded inside the magnetic body.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: October 10, 2023
    Assignee: CYNTEC CO., LTD.
    Inventors: Pei-I Wei, Cheng-Hao Chang, Shing Tak Li
  • Publication number: 20220351894
    Abstract: A coupled inductor has two coils made by film or a lithography processes, wherein a first coil is disposed on a top surface of a magnetic sheet and a second coil is disposed on the bottom surface of the magnetic sheet, for controlling the variations of the alignments of the two coils in a smaller range.
    Type: Application
    Filed: April 28, 2022
    Publication date: November 3, 2022
    Inventors: Cheng-Hao Chang, Shing Tak Li
  • Publication number: 20210074470
    Abstract: An inductive component is disclosed, the inductive component comprising a metal structure, comprising a bare conductor wire, a first electrode and a second electrode, wherein the first electrode and the second electrode are integrally formed with the bare conductor wire, wherein a first thickness of the first electrode is greater than that of the bare conductor wire and a second thickness of the second electrode is greater than that of the bare conductor wire; and a magnetic body encapsulating the bare conductor wire, at least one portion of the first electrode, and at least one portion of the second electrode, wherein the first lateral surface of the first electrode and the second lateral surface of the second electrode are embedded inside the magnetic body.
    Type: Application
    Filed: July 23, 2020
    Publication date: March 11, 2021
    Inventors: Pei-I Wei, Cheng-Hao Chang, Shing Tak Li
  • Patent number: 10790466
    Abstract: An in-line system for mass production of an organic optoelectronic device is disclosed. The in-line system includes a patterned holder, a first chamber, and a second chamber. The patterned holder is for holding a substrate covered with a first electrode layer and a contact electrode layer, in which the first electrode layer and the contact electrode layer are partially shielded by the patterned holder. The first chamber is for forming an organic layer on portions of the first electrode layer and the contact electrode layer that are not shielded by the patterned holder. The second chamber is aligned with the first chamber and is for forming a second electrode layer on the organic layer.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: September 29, 2020
    Inventors: Feng-Wen Yen, Cheng-Hao Chang
  • Publication number: 20200185636
    Abstract: An in-line system for mass production of an organic optoelectronic device is disclosed. The in-line system includes a patterned holder, a first chamber, and a second chamber. The patterned holder is for holding a substrate covered with a first electrode layer and a contact electrode layer, in which the first electrode layer and the contact electrode layer are partially shielded by the patterned holder. The first chamber is for forming an organic layer on portions of the first electrode layer and the contact electrode layer that are not shielded by the patterned holder. The second chamber is aligned with the first chamber and is for forming a second electrode layer on the organic layer.
    Type: Application
    Filed: April 29, 2019
    Publication date: June 11, 2020
    Applicant: LUMINESCENCE TECHNOLOGY CORPORATION
    Inventors: FENG-WEN YEN, Cheng-Hao Chang
  • Patent number: 10636977
    Abstract: A light emitting material is represented by the following formula (1), the organic EL device employing the material as delayed fluorescence emitting dopant or fluorescence emitting dopant can display good performance like as lower driving voltage and power consumption, especially doping with the host (H1 to H4) and the second host (SH1 to SH4) can increasing efficiency and half-life time. wherein G represents the following formula (2): L, m, n, p, R1 to R4, Ar and X are the same definition as described in the present invention.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: April 28, 2020
    Inventors: Feng-Wen Yen, Cheng-Hao Chang
  • Patent number: 10629840
    Abstract: The present invention provides an organic optoelectronic device and a method for manufacturing the same, in which laser scanning is used to form the electrical connection between the second electrode layer and the contact electrode layer. The present invention can effectively decrease the frequency of replacement of metal masks, significantly shorten the time required for replacing the metal masks, and reduce the down time due to the replacement of metal masks. In addition, the organic optoelectronic device can have a large active area due to the narrow border of the electrical connection formed by the laser scanning.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: April 21, 2020
    Inventors: Sheng-Yang Huang, Ching-Yan Chao, Cheng-Hao Chang, Feng-Wen Yen
  • Patent number: 10186668
    Abstract: There is provided a novel material of formula(1) or formula(2) and the organic EL device employing the novel material as phosphorescent light emitting host of emitting layer, delayed fluorescence dopant of emitting layer, and hole blocking layer can display good performance like as lower driving voltage, power consumption, increasing efficiency and life time. wherein m, X1 to X4 and R1 to R6 are the same definition as described in the present invention.
    Type: Grant
    Filed: March 4, 2017
    Date of Patent: January 22, 2019
    Inventors: Feng-Wen Yen, Cheng-Hao Chang
  • Patent number: 10174921
    Abstract: A slim OLED lamp is provided, which may include a lamp holder, a support, and a base. The support connects the base to the lamp holder. When the lamp holder, support, and base are folded to be in the same plane, the lamp holder, the support, and the base can be close to and adjacent to one another. A light-emitting unit manufactured by the organic light-emitting technology can be plugged into the lamp holder, so the light-emitting unit can be conveniently replaced. There is at least one rotation direction between the support and lamp holder, so the freedom degree of the illumination range of the light-emitting unit can be increased. The base includes a control unit applicable to various light-emitting units with different rating currents so as to adjust the brightness thereof.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: January 8, 2019
    Inventors: Feng-Wen Yen, Cheng-Hao Chang, Ching-Yan Chao, Yuan-Hui Wang
  • Patent number: 10164194
    Abstract: The present invention discloses a compound is represented by the following formula (I), the organic EL device employing the compound as fluorescent host material, phosphorescent host material, can display good performance like as lower driving voltage and power consumption, increasing efficiency and half-life time. The same definition as described in the present invention.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: December 25, 2018
    Inventors: Feng-Wen Yen, Cheng-Hao Chang
  • Publication number: 20180301631
    Abstract: A light emitting material is represented by the following formula (1), the organic EL device employing the material as delayed fluorescence emitting dopant or fluorescence emitting dopant can display good performance like as lower driving voltage and power consumption, especially doping with the host (H1 to H4) and the second host (SH1 to SH4) can increasing efficiency and half-life time. wherein G represents the following formula (2): L, m, n, p, R1 to R4, Ar and X are the same definition as described in the present invention.
    Type: Application
    Filed: April 14, 2017
    Publication date: October 18, 2018
    Applicant: LUMINESCENCE TECHNOLOGY CORPORATION
    Inventors: FENG-WEN YEN, CHENG-HAO CHANG
  • Patent number: 10103339
    Abstract: The present invention discloses an iridium complexes and the organic EL device employing the iridium complexes as light emitting guest of emitting layer can display good performance like as lower driving voltage and power consumption, increasing efficiency and half-life time. Additional, the present invention provide the suitable emitting host (H1 to H6) to collocate with the energy level of iridium complexes for the present invention. Also provided a novel preparation method to synthesize the novel ligand such as 6-bromo-3,3-dimethyl-1-phenyl-1,3-dihydroindeno[2,1-b]carbazole.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: October 16, 2018
    Inventors: Feng-Wen Yen, Cheng-Hao Chang
  • Publication number: 20180277788
    Abstract: The present invention provides an organic optoelectronic device and a method for manufacturing the same, in which laser scanning is used to form the electrical connection between the second electrode layer and the contact electrode layer. The present invention can effectively decrease the frequency of replacement of metal masks, significantly shorten the time required for replacing the metal masks, and reduce the down time due to the replacement of metal masks. In addition, the organic optoelectronic device can have a large active area due to the narrow border of the electrical connection formed by the laser scanning.
    Type: Application
    Filed: March 19, 2018
    Publication date: September 27, 2018
    Applicant: LUMINESCENCE TECHNOLOGY CORPORATION
    Inventors: SHENG-YANG HUANG, CHING-YAN CHAO, CHENG-HAO CHANG, FENG-WEN YEN
  • Publication number: 20180254415
    Abstract: There is provided a novel material of formula(1) or formula(2) and the organic EL device employing the novel material as phosphorescent light emitting host of emitting layer, delayed fluorescence dopant of emitting layer, and hole blocking layer can display good performance like as lower driving voltage, power consumption, increasing efficiency and life time. wherein m, X1 to X4 and R1 to R6 are the same definition as described in the present invention.
    Type: Application
    Filed: March 4, 2017
    Publication date: September 6, 2018
    Applicant: LUMINESCENCE TECHNOLOGY CORPORATION
    Inventors: FENG-WEN YEN, CHENG-HAO CHANG
  • Publication number: 20180195702
    Abstract: A slim OLED lamp is provided, which may include a lamp holder, a support, and a base. The support connects the base to the lamp holder. When the lamp holder, support, and base are folded to be in the same plane, the lamp holder, the support, and the base can be close to and adjacent to one another. A light-emitting unit manufactured by the organic light-emitting technology can be plugged into the lamp holder, so the light-emitting unit can be conveniently replaced. There is at least one rotation direction between the support and lamp holder, so the freedom degree of the illumination range of the light-emitting unit can be increased. The base includes a control unit applicable to various light-emitting units with different rating currents so as to adjust the brightness thereof.
    Type: Application
    Filed: January 8, 2018
    Publication date: July 12, 2018
    Applicant: Luminescence Technology Corporation
    Inventors: Feng-Wen Yen, Cheng-Hao Chang, Ching-Yan Chao, Yuan-Hui Wang
  • Patent number: 9911922
    Abstract: The present invention discloses an organic compound is represented by the following formula(1), the organic EL device employing the organic compound as fluorescent emitting guest shown deep blue color(CIEy=0.09˜0.12)and display good performance. wherein A, m and R1 to R3 are the same definition as described in the present invention.
    Type: Grant
    Filed: May 8, 2016
    Date of Patent: March 6, 2018
    Inventors: Feng-Wen Yen, Cheng-Hao Chang
  • Publication number: 20170324041
    Abstract: The present invention discloses an organic compound is represented by the following formula(1), the organic EL device employing the organic compound as fluorescent emitting guest shown deep blue color(CIEy=0.09˜0.12)and display good performance. wherein A, m and R1 to R3 are the same definition as described in the present invention.
    Type: Application
    Filed: May 8, 2016
    Publication date: November 9, 2017
    Applicant: LUMINESCENCE TECHNOLOGY CORPORATION
    Inventors: FENG-WEN YEN, CHENG-HAO CHANG
  • Patent number: 9812649
    Abstract: The present invention discloses an indenotriphenylene-based amine derivative represented by the following formula (A): wherein R1 to R5, m, n, p, L and Ar are the same definition as described in the present invention. The present invention also discloses an organic EL device employing the indenotriphenylene-based amine derivative as a hole transport material or an electron blocking material, which can lower driving voltage and power consumption and increase efficiency and half-life time.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: November 7, 2017
    Inventors: Feng-Wen Yen, Cheng-Hao Chang, Chin-Min Teng