Patents by Inventor Yung-Nien Chai

Yung-Nien Chai 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: 11776774
    Abstract: A keyboard including a base plate, a plurality of keycaps, a plurality of supporting structures and a membrane switch element is provided. The base plate has a through hole. The keycaps are disposed on the base plate. The supporting structures are respectively disposed between the keycaps and the base plate. The membrane switch element is disposed on the base plate. The vertical projection of two adjacent keycaps of the keycaps relative to the base plate overlaps the through hole, and the membrane switch element has a shielding portion covering the through hole.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: October 3, 2023
    Assignee: LITE-ON TECHNOLOGY CORPORATION
    Inventor: Yung-Nien Chai
  • Publication number: 20220293360
    Abstract: A keyboard including a base plate, a plurality of keycaps, a plurality of supporting structures and a membrane switch element is provided. The base plate has a through hole. The keycaps are disposed on the base plate. The supporting structures are respectively disposed between the keycaps and the base plate. The membrane switch element is disposed on the base plate. The vertical projection of two adjacent keycaps of the keycaps relative to the base plate overlaps the through hole, and the membrane switch element has a shielding portion covering the through hole.
    Type: Application
    Filed: February 15, 2022
    Publication date: September 15, 2022
    Inventor: Yung-Nien CHAI
  • Patent number: 7882798
    Abstract: A spray painting tool for painting key caps is disclosed, which comprises: a platform, having a plurality of columns formed on a top surface of the same; a panel, having a plurality of holes formed thereon at positions corresponding to the plural columns for allowing the plural columns to pass through the panel therefrom; a diaphragm, disposed on the panel while aligning a plurality of holes formed thereon with the plural columns for allowing the plural columns to pass through the diaphragm therefrom; and at least a holding unit, each being arranged on the panel at a position corresponding to one of the plural column for fixedly securing a key cap. As the diaphragm can be easily replaced, the spray painting tool can be used repetitively without worrying the stacking of residue paint on its panel. Moreover, as the spray painting tool is simple in structure and ease to use, painting key caps can be achieved with lower cost and less time.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: February 8, 2011
    Assignee: Darfon Electronics Corp.
    Inventors: Chin-Hung Lin, Chao-Lung Chang, Yung-Nien Chai
  • Patent number: 7670017
    Abstract: A luminous key mechanism. A keycap moves with respect to a base plate and includes a transparent window. A light-emitting element is disposed under the keycap. A condenser is connected to the transparent window and opposes the light-emitting element. Light output from the light-emitting element is condensed by the condenser and output via the transparent window.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: March 2, 2010
    Assignee: Darfon Electronics Corp.
    Inventors: Wen-Yu Tsai, Wen-Kuang Hou, Yung-Nien Chai
  • Publication number: 20100006412
    Abstract: A keycap and a press key structure along with a keyboard using the same are disclosed. The keycap, being comprised of a top and a bottom having a concave-convex structure formed thereon, is structured for allowing light to pass therethrough. There is a connecting component sandwiched between the keycap and a substrate in a manner that it is pivotally connected to the two in respective for allowing the keycap to move up and down in relative to the substrate. Moreover, there is at least a light source being disposed between the keycap and the substrate for projecting light to the concave-convex structure on the keycap? bottom and out of the keycap through the top thereof after being uniformly scattered by the concave-convex structure. Thus a press key is constructed. It is noted that by arranging a plurality of the aforesaid press keys in an array, a keyboard is constructed.
    Type: Application
    Filed: June 22, 2009
    Publication date: January 14, 2010
    Applicant: DARFON ELECTRONICS CORP.
    Inventors: YI-CHEN WANG, LEI-LUNG TSAI, YUNG-NIEN CHAI
  • Publication number: 20080092809
    Abstract: A spray painting tool for painting key caps is disclosed, which comprises: a platform, having a plurality of columns formed on a top surface of the same; a panel, having a plurality of holes formed thereon at positions corresponding to the plural columns for allowing the plural columns to pass through the panel therefrom; a diaphragm, disposed on the panel while aligning a plurality of holes formed thereon with the plural columns for allowing the plural columns to pass through the diaphragm therefrom; and at least a holding unit, each being arranged on the panel at a position corresponding to one of the plural column for fixedly securing a key cap. As the diaphragm can be easily replaced, the spray painting tool can be used repetitively without worrying the stacking of residue paint on its panel. Moreover, as the spray painting tool is simple in structure and ease to use, painting key caps can be achieved with lower cost and less time.
    Type: Application
    Filed: October 18, 2007
    Publication date: April 24, 2008
    Inventors: Chin-Hung Lin, Chao-Lung Chang, Yung-Nien Chai
  • Publication number: 20080062671
    Abstract: A luminous key mechanism. A keycap moves with respect to a base plate and includes a transparent window. A light-emitting element is disposed under the keycap. A condenser is connected to the transparent window and opposes the light-emitting element. Light output from the light-emitting element is condensed by the condenser and output via the transparent window.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 13, 2008
    Applicant: DARFON ELECTRONICS CORP.
    Inventors: Wen-Yu Tsai, Wen-Kuang Hou, Yung-Nien Chai