Patents by Inventor Wen-Ta Tsai

Wen-Ta Tsai 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: 20240168254
    Abstract: An imaging lens assembly includes a lens barrel, optical lens elements, an annular retaining element and a nano-microstructure. The optical lens elements include at least one optical lens element disposed in the lens barrel. The annular retaining element is physically contacted with the optical lens element, and the annular retaining element includes an object-side surface, an image-side surface, an outer diameter surface and a light-through hole. The outer diameter surface is connected to the object-side surface and the image-side surface. The light-through hole is formed by gradually tapering from the object-side surface and the image-side surface towards the optical axis. The nano-microstructure has a plurality of irregular ridged convexes. The nano-microstructure is located between a lens barrel area defined via the lens barrel and a lens element area defined via the optical lens element on a direction vertical to the optical axis.
    Type: Application
    Filed: November 15, 2023
    Publication date: May 23, 2024
    Inventors: Ssu-Hsin LIU, Heng-Yi SU, Liang-Chieh WENG, Wen-Yu TSAI, Ming-Ta CHOU
  • Publication number: 20240134167
    Abstract: An optical path folding element includes a main body, a light absorption film layer and a matte structure. The main body has optical surface including an incident surface, a reflective surface and an emitting surface. A light enters into the optical folding element through the incident surface. The reflective surface reflects the light so as to change a traveling direction thereof. The light exits the optical folding element through the emitting surface. The light absorbing film layer is configured to reduce reflectance and provided adjacent to at least part of the optical surface, and the light absorbing film layer is in physical contact with the main body. The matte structure is disposed adjacent to at least part of the optical surface. The matte structure provides an undulating profile on a surface of the optical path folding element, and the matte structure is formed in one-piece with the main body.
    Type: Application
    Filed: September 24, 2023
    Publication date: April 25, 2024
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Ssu-Hsin LIU, Chen Wei FAN, Chien-Hsun WU, Wen-Yu TSAI, Ming-Ta CHOU
  • Publication number: 20240111139
    Abstract: An imaging lens assembly module includes a lens barrel, a catadioptric lens assembly, an imaging lens assembly, a first fixing element and a second fixing element. The lens barrel has a first relying surface and a second relying surface, which face towards an object side of the imaging lens assembly module. The catadioptric lens assembly relies on the first relying surface. The imaging lens assembly is disposed on an image side of the catadioptric lens assembly, and relies on the second relying surface. The first fixing element is for fixing the catadioptric lens assembly to the lens barrel. The second fixing element is for fixing the imaging lens assembly to the lens barrel. The catadioptric lens assembly is for processing at least twice internal reflections of an image light in the imaging lens assembly module, and for providing optical refractive power.
    Type: Application
    Filed: September 26, 2023
    Publication date: April 4, 2024
    Inventors: Lin-An CHANG, Chung Hao CHEN, Wen-Yu TSAI, Ming-Ta CHOU
  • Publication number: 20240093373
    Abstract: A method for preparing antibacterial stainless steel by surface alloying includes the steps of coating an infiltration promoter layer on a stainless steel surface, coating an antibacterial metal layer on a surface of the infiltration promoter layer, and performing heat treatment of the stainless steel to diffuse an antibacterial metal into the stainless steel. This method can be applied to various types of stainless steel, and the antibacterial metal can be diffused and quenched into the stainless steel, such that the finally formed surface of the stainless steel has an antibacterial alloy layer with a specific thickness to provide better corrosion resistance and antibacterial ability without changing the advantages and properties of the antibacterial metal or stainless steel substrate, and the thickness and concentration of the antibacterial metal layer, and the parameters for heat treatment can be adjusted to control the chemical composition and thickness of the antibacterial alloy layer.
    Type: Application
    Filed: November 16, 2022
    Publication date: March 21, 2024
    Inventors: WEN-TA TSAI, BERNARD HAOCHIH LIU, ZHI-YAN CHEN, CHONG-CHENG HUANG
  • Publication number: 20240077657
    Abstract: An imaging lens assembly includes a first optical element and a low-reflection layer. The first optical element has a central opening, and includes a first surface, a second surface and a first outer diameter surface. The first outer diameter surface is connected to the first surface and the second surface. The low-reflection layer is located on at least one of the first surface and the second surface, and includes a carbon black layer, a nano-microstructure and a coating layer. The nano-microstructure is directly contacted with and connected to the carbon black layer, and the nano-microstructure is farther from the first optical element than the carbon black layer from the first optical element. The coating layer is directly contacted with and connected to the nano-microstructure, and the coating layer is farther from the first optical element than the nano-microstructure from the first optical element.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 7, 2024
    Inventors: Wen-Yu TSAI, Heng-Yi SU, Ming-Ta CHOU, Chien-Pang CHANG, Kuo-Chiang CHU
  • Publication number: 20240077656
    Abstract: An imaging lens assembly includes a first optical element and a low-reflection layer. The first optical element has a central opening, and includes a first surface, a second surface and a first outer diameter surface. The first outer diameter surface is connected to the first surface and the second surface. The low-reflection layer is located on at least one of the first surface and the second surface, and includes a carbon black layer, a nano-microstructure and a coating layer. The nano-microstructure is directly contacted with and connected to the carbon black layer, and the nano-microstructure is farther from the first optical element than the carbon black layer from the first optical element. The coating layer is directly contacted with and connected to the nano-microstructure, and the coating layer is farther from the first optical element than the nano-microstructure from the first optical element.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 7, 2024
    Inventors: Wen-Yu TSAI, Heng-Yi SU, Ming-Ta CHOU, Chien-Pang CHANG, Kuo-Chiang CHU
  • Patent number: 6903441
    Abstract: A semiconductor package and a fabrication method thereof are provided, in which a ground pad on a chip is electrically connected to a ground plane on a substrate by means of an electrically-conductive wall formed over a side surface of the chip and an electrically-conductive adhesive used for attaching the chip to the substrate. Therefore, a wire-bonding process is merely implemented for power pads and signal I/O (input/output) pads on the chip without having to form ground wires on the ground pads for electrical connection purposes. This benefit allows the use of a reduced number of bonding wires and simplifies wire arrangement or routability. And, a grounding path from the chip through the electrically-conductive wall and electrically-conductive adhesive to the substrate is shorter than the conventional one of using ground wires, thereby reducing a ground-bouncing effect and improving electrical performances of the semiconductor package.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: June 7, 2005
    Assignee: Siliconware Precision Industries, Ltd.
    Inventors: Chin Fa Wang, Wen-Ta Tsai, Yuan-Ping Joe
  • Patent number: 6777266
    Abstract: A dual-chip integrated circuit package and a method for manufacturing such a dual-chip integrated circuit package are proposed, which can help prevent the occurrence of cracking and delamination in the chips and the occurrence of voids in the encapsulant during the manufacture process. The dual-chip integrated circuit package is constructed on a leadframe having a plurality of first leads and a plurality of second leads and at least a pair of support members between the first and second leads. Further, the dual-chip integrated circuit package includes at least one support member attached to the front side of the first integrated circuit chip for providing a support to the bonding pads on the second integrated circuit chip; the support member being not smaller in dimension than the area where the bonding pads on the second integrated circuit chip are located.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: August 17, 2004
    Assignee: Siliconware Precision Industries Co., Ltd.
    Inventors: Chieh-Ping Huang, Lian-Cherng Chiang, Wen-Ta Tsai
  • Publication number: 20040070087
    Abstract: A semiconductor package and a fabrication method thereof are provided, in which a ground pad on a chip is electrically connected to a ground plane on a substrate by means of an electrically-conductive wall formed over a side surface of the chip and an electrically-conductive adhesive used for attaching the chip to the substrate. Therefore, a wire-bonding process is merely implemented for power pads and signal I/O (input/output) pads on the chip without having to form ground wires on the ground pads for electrical connection purposes. This benefit allows the use of a reduced number of bonding wires and simplifies wire arrangement or routability. And, a grounding path from the chip through the electrically-conductive wall and electrically-conductive adhesive to the substrate is shorter than the conventional one of using ground wires, thereby reducing a ground-bouncing effect and improving electrical performances of the semiconductor package.
    Type: Application
    Filed: May 30, 2003
    Publication date: April 15, 2004
    Applicant: SILICONWARE PRECISION INDUSTRIES CO., LTD.
    Inventors: C. F. Wang, Wen-Ta Tsai, Yuan-Ping Joe
  • Publication number: 20030197262
    Abstract: A dual-chip integrated circuit package and a method for manufacturing such a dual-chip integrated circuit package are proposed, which can help prevent the occurrence of cracking and delamination in the chips and the occurrence of voids in the encapsulant during the manufacture process. The dual-chip integrated circuit package is constructed on a leadframe having a plurality of first leads and a plurality of second leads and at least a pair of support members between the first and second leads. Further, the dual-chip integrated circuit package includes at least one support member attached to the front side of the first integrated circuit chip for providing a support to the bonding pads on the second integrated circuit chip; the support member being not smaller in dimension than the area where the bonding pads on the second integrated circuit chip are located.
    Type: Application
    Filed: May 19, 2003
    Publication date: October 23, 2003
    Applicant: Siliconware Precision Industries Co., Ltd.
    Inventors: Chieh-Ping Huang, Lian-Cherng Chiang, Wen-Ta Tsai
  • Patent number: D500607
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: January 11, 2005
    Assignee: Zhejiang Himax Furniture Industry Corp. Ltd.
    Inventor: Wen-Ta Tsai
  • Patent number: D512574
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: December 13, 2005
    Assignee: Zhejiang Himax Furniture Industry Corp., Ltd.
    Inventor: Wen-Ta Tsai
  • Patent number: D514831
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: February 14, 2006
    Assignee: Zhejiang Himax Furniture Industry Corp., Ltd.
    Inventor: Wen-Ta Tsai
  • Patent number: D514832
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: February 14, 2006
    Assignee: Zhejiang Himax Furniture Industry Corp Ltd.
    Inventor: Wen-Ta Tsai
  • Patent number: D516828
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: March 14, 2006
    Assignee: Zhejiang Himax Furniture Industry Corp. Ltd.
    Inventor: Wen Ta Tsai
  • Patent number: D537282
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: February 27, 2007
    Assignee: Zhejiang Himax Furniture Industry Corp, Ltd.
    Inventor: Wen-Ta Tsai
  • Patent number: D537283
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: February 27, 2007
    Assignee: Zhejiang Himax Furniture Industry Corp. Ltd.
    Inventor: Wen-Ta Tsai
  • Patent number: D538075
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: March 13, 2007
    Assignee: Zhejiang Himax Furniture Industry Corp. Ltd.
    Inventor: Wen-Ta Tsai
  • Patent number: D554877
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: November 13, 2007
    Assignee: Zhejiang HiMax Furniture Industry Corp. Ltd.
    Inventor: Wen-Ta Tsai
  • Patent number: D569116
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: May 20, 2008
    Assignee: Zhejiang Himax Furniture Industry Corp. Ltd.
    Inventor: Wen-Ta Tsai