Patents by Inventor Yen-Chang Chu

Yen-Chang Chu 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: 20240078887
    Abstract: There is provided a smoke detector including a first light source, a second light source surface, a light sensor and a processor. The light sensor receives reflected light when the first light source and the second light source emit light, and generates a first detection signal corresponding to light emission of the first light source and a second detection signal corresponding to light emission of the second light source. The processor distinguishes smoke and floating particles according to a similarity between the first detection signal and the second detection signal.
    Type: Application
    Filed: November 15, 2023
    Publication date: March 7, 2024
    Inventors: CHENG-NAN TSAI, GUO-ZHEN WANG, CHING-KUN CHEN, YEN-CHANG CHU, CHIH-MING SUN
  • Patent number: 11913864
    Abstract: There is provided a smoke detector including a substrate, a light source and a light sensor. The light source and the light sensor are arranged adjacently on the substrate. The substrate is arranged with an asymmetric structure to cause an illumination region of the light source to deviate toward the light sensor thereby increasing a ratio of light intensity reflected by smoke with respect to reference light intensity.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: February 27, 2024
    Assignee: PIXART IMAGING INC.
    Inventors: Yen-Chang Chu, Cheng-Nan Tsai, Chih-Ming Sun
  • Publication number: 20240054874
    Abstract: A smoke detector includes a substrate, an optical detection module, a base and a top cover. The substrate has a ring shape region surrounding a central detection region, and a first block structure of the central detection region is protruded from the substrate and higher than an upper surface of the ring shape region. The optical detection module is disposed inside the central detection region. The base is disposed on the substrate and around the optical detection module. The base has a second block structure. The top cover is connected to the base. A lateral wall of the top cover is partly overlapped with the second block structure to form a guiding channel. The optical detection module analyzes variation of scattering parameters resulted from gaseous matter entering the top cover through the guiding channel for determining concentration of the gaseous matter.
    Type: Application
    Filed: August 9, 2022
    Publication date: February 15, 2024
    Applicant: PixArt Imaging Inc.
    Inventors: Cheng-Nan Tsai, Yen-Chang Chu, Chih-Ming Sun
  • Patent number: 11855109
    Abstract: A system and method for forming pixels in an image sensor is provided. In an embodiment, a semiconductor device includes an image sensor including a first pixel region and a second pixel region in a substrate, the first pixel region being adjacent to the second pixel region. A first anti-reflection coating is over the first pixel region, the first anti-reflection coating reducing reflection for a first wavelength range of incident light. A second anti-reflection coating is over the second pixel region, the second anti-reflection coating reducing reflection for a second wavelength range of incident light that is different from the first wavelength range.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: December 26, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD
    Inventors: Yen-Chang Chu, Yeur-Luen Tu, Cheng-Yuan Tsai
  • Patent number: 11854361
    Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.
    Type: Grant
    Filed: February 20, 2023
    Date of Patent: December 26, 2023
    Inventors: Cheng-Nan Tsai, Guo-Zhen Wang, Ching-Kun Chen, Yen-Chang Chu, Chih-Ming Sun
  • Publication number: 20230375419
    Abstract: There is provided a force sensor including a substrate and a polymer material layer. The substrate has a circuit layout that includes a first electrode and a second electrode configured to form a capacitor therebetween. The polymer material layer covers at least on a space between the first electrode and the second electrode, and is used to change capacitance of the capacitor while being pressed. The force sensor is arranged inside a stem of an earphone for detecting the user input.
    Type: Application
    Filed: August 4, 2023
    Publication date: November 23, 2023
    Inventors: YEN-PO CHEN, HAO-CHE LIU, YEN-CHANG CHU, CHIH-MING SUN
  • Patent number: 11761830
    Abstract: There is provided a force sensor including a substrate and a polymer material layer. The substrate has a circuit layout that includes a first electrode and a second electrode configured to form a capacitor therebetween. The polymer material layer covers at least on a space between the first electrode and the second electrode, and is used to change capacitance of the capacitor while being pressed. The force sensor is arranged inside a stem of an earphone for detecting the user input.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: September 19, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Yen-Po Chen, Hao-Che Liu, Yen-Chang Chu, Chih-Ming Sun
  • Publication number: 20230252871
    Abstract: A smoke detection device includes a housing, a smoke collector, an optical detector and a cover plate. The housing has a piercing hole. The smoker collector has a smoke hole, and position of the smoke hole is close to position of the piercing hole. The optical detector is disposed inside the smoke collector and adapted to detect gaseous concentration inside the smoke collector. The cover plate is disposed between the housing and the smoke collector, and used to set a channel from the piercing hole to the smoke hole, so that gaseous matter flows from outside the smoke detection device into the smoke collector through the piercing hole and the smoke hole.
    Type: Application
    Filed: May 11, 2022
    Publication date: August 10, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Yen-Chang Chu, Yen-Po Chen, Chih-Ming Sun, Cheng-Nan Tsai, Ching-Kun Chen
  • Publication number: 20230206743
    Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.
    Type: Application
    Filed: February 20, 2023
    Publication date: June 29, 2023
    Inventors: Cheng-Nan TSAI, Guo-Zhen WANG, Ching-Kun CHEN, Yen-Chang CHU, Chih-Ming SUN
  • Patent number: 11615684
    Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: March 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Cheng-Nan Tsai, Guo-Zhen Wang, Ching-Kun Chen, Yen-Chang Chu, Chih-Ming Sun
  • Patent number: 11611005
    Abstract: A photo-sensitive device includes a uniform layer, a gradated buffer layer over the uniform layer, a silicon layer over the gradated buffer layer, a photo-sensitive light-sensing region in the uniform layer and the silicon layer, a device layer on the silicon layer, and a carrier wafer bonded to the device layer.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: March 21, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yu-Hung Cheng, Chia-Shiung Tsai, Cheng-Ta Wu, Xiaomeng Chen, Yen-Chang Chu, Yeur-Luen Tu
  • Publication number: 20230060584
    Abstract: There is provided an optical machine of a smoke detector including a substrate, a light source, a light sensor and a light blocking member. The light source and the light sensor are arranged on the substrate in a first direction. The light blocking member is arranged upon the light source and blocks a part of an emission angle of the light source in the first direction far away from the light sensor.
    Type: Application
    Filed: April 15, 2022
    Publication date: March 2, 2023
    Inventors: Cheng-Nan TSAI, Yen-Chang CHU, Chih-Ming SUN, Chi-Chih SHEN, Kuo-Hsiung LI
  • Publication number: 20230032079
    Abstract: There is provided a thermometer structure including a circuit board, an infrared thermometer, a heat sink and a metal block. The infrared thermometer is arranged on the circuit board and electrically connected thereto. The heat sink is arranged on the circuit board and covers the infrared thermometer. The metal block is in contact with at least one of the circuit board and the heat sink to stabilize a local temperature of the thermometer structure.
    Type: Application
    Filed: April 29, 2022
    Publication date: February 2, 2023
    Inventors: Yen-Chang CHU, Po-Wei YU, Yen-Po CHEN, Chih-Ming SUN
  • Patent number: 11553602
    Abstract: A method for manufacturing a circuit board, includes: stacking a first peelable film on a second peelable film, and disposing fluffy carbon nanotubes between the first peelable film and the second peelable film, thereby obtaining a carbon nanotube layer; pressing the first peelable film, the carbon nanotube layer, and the second peelable film to compact the fluffy carbon nanotubes, thereby obtaining a thermal conductive layer; removing the first peelable film, and disposing a first adhesive layer, a first dielectric layer, and a first circuit layer on a side of the thermal conductive layer away from the second peelable film; removing the second peelable film, and disposing a second adhesive layer, a second dielectric layer, and a second circuit layer on a side of the thermal conductive layer away from the first adhesive layer; mounting an electronic component on the first circuit layer.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: January 10, 2023
    Assignees: QING DING PRECISION ELECTRONICS (HUAIAN) CO., LTD, Avary Holding (Shenzhen) Co., Limited., GARUDA TECHNOLOGY CO., LTD.
    Inventors: Yin-Ju Chen, Jing-Cyuan Yang, Yen-Chang Chu
  • Publication number: 20220377913
    Abstract: A method for manufacturing a circuit board, includes: stacking a first peelable film on a second peelable film, and disposing fluffy carbon nanotubes between the first peelable film and the second peelable film, thereby obtaining a carbon nanotube layer; pressing the first peelable film, the carbon nanotube layer, and the second peelable film to compact the fluffy carbon nanotubes, thereby obtaining a thermal conductive layer; removing the first peelable film, and disposing a first adhesive layer, a first dielectric layer, and a first circuit layer on a side of the thermal conductive layer away from the second peelable film; removing the second peelable film, and disposing a second adhesive layer, a second dielectric layer, and a second circuit layer on a side of the thermal conductive layer away from the first adhesive layer; mounting an electronic component on the first circuit layer.
    Type: Application
    Filed: June 22, 2021
    Publication date: November 24, 2022
    Inventors: YIN-JU CHEN, JING-CYUAN YANG, YEN-CHANG CHU
  • Publication number: 20220310449
    Abstract: An integrated circuit structure includes a package component, which further includes a non-porous dielectric layer having a first porosity, and a porous dielectric layer over and contacting the non-porous dielectric layer, wherein the porous dielectric layer has a second porosity higher than the first porosity. A bond pad penetrates through the non-porous dielectric layer and the porous dielectric layer. A dielectric barrier layer is overlying, and in contact with, the porous dielectric layer. The bond pad is exposed through the dielectric barrier layer. The dielectric barrier layer has a planar top surface. The bond pad has a planar top surface higher than a bottom surface of the dielectric barrier layer.
    Type: Application
    Filed: June 16, 2022
    Publication date: September 29, 2022
    Inventors: Hsun-Chung Kuang, Yen-Chang Chu, Cheng-Tai Hsiao, Ping-Yin Liu, Lan-Lin Chao, Yeur-Luen Tu, Chia-Shiung Tsai, Xiaomeng Chen
  • Publication number: 20220268682
    Abstract: There is provided a smoke detector including a substrate, a light source and a light sensor. The light source and the light sensor are arranged adjacently on the substrate. The substrate is arranged with an asymmetric structure to cause an illumination region of the light source to deviate toward the light sensor thereby increasing a ratio of light intensity reflected by smoke with respect to reference light intensity.
    Type: Application
    Filed: May 10, 2022
    Publication date: August 25, 2022
    Inventors: YEN-CHANG CHU, CHENG-NAN TSAI, CHIH-MING SUN
  • Publication number: 20220208607
    Abstract: An integrated circuit structure includes a package component, which further includes a non-porous dielectric layer having a first porosity, and a porous dielectric layer over and contacting the non-porous dielectric layer, wherein the porous dielectric layer has a second porosity higher than the first porosity. A bond pad penetrates through the non-porous dielectric layer and the porous dielectric layer. A dielectric barrier layer is overlying, and in contact with, the porous dielectric layer. The bond pad is exposed through the dielectric barrier layer. The dielectric barrier layer has a planar top surface. The bond pad has a planar top surface higher than a bottom surface of the dielectric barrier layer.
    Type: Application
    Filed: March 17, 2022
    Publication date: June 30, 2022
    Inventors: Hsun-Chung Kuang, Yen-Chang Chu, Cheng-Tai Hsiao, Ping-Yin Liu, Lan-Lin Chao, Yeur-Luen Tu, Chia-Shiung Tsai, Xiaomeng Chen
  • Publication number: 20220165141
    Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.
    Type: Application
    Filed: May 14, 2021
    Publication date: May 26, 2022
    Inventors: Cheng-Nan TSAI, Guo-Zhen WANG, Ching-Kun CHEN, Yen-Chang CHU, Chih-Ming SUN
  • Publication number: 20220122293
    Abstract: There is provided a temperature measurement system including an image sensor, a thermal sensor and a processor. The image sensor captures an image frame. The thermal sensor captures a thermal image. The processor calibrates measured temperatures of the thermal sensor and calibrates offset pixels between the image frame and the thermal image corresponding to different operating distances.
    Type: Application
    Filed: January 3, 2022
    Publication date: April 21, 2022
    Inventors: Chih-Ming SUN, Po-Wei YU, Yen-Chang CHU