Patents by Inventor Li-Jen Chien

Li-Jen Chien 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: 20200185169
    Abstract: A keyboard device includes a key structure, a membrane wiring board and an elastic element. The elastic element is arranged between the key structure and the membrane wiring board. The key structure includes a sleeve, a plunger-type support shaft, a keycap and a resilience element. The plunger-type support shaft is movable upwardly or downwardly relative to the sleeve. When the keycap is depressed in response to an external force, the resilience element and the sleeve interfere with each other. Consequently, the keyboard device provides the operating sound and the operating feedback like a mechanical switch.
    Type: Application
    Filed: February 26, 2019
    Publication date: June 11, 2020
    Inventors: Sheng-An Tsai, Li-Jen Chien, Hsiang-Wen Cheng
  • Patent number: 10658135
    Abstract: A keyboard device includes a key structure, a membrane wiring board and an elastic element. The elastic element is arranged between the key structure and the membrane wiring board. The key structure includes a sleeve, a plunger-type support shaft, a keycap and a resilience element. The plunger-type support shaft is movable upwardly or downwardly relative to the sleeve. When the keycap is depressed in response to an external force, the resilience element and the sleeve interfere with each other. Consequently, the keyboard device provides the operating sound and the operating feedback like a mechanical switch.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: May 19, 2020
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Sheng-An Tsai, Li-Jen Chien, Hsiang-Wen Cheng
  • Patent number: 10658137
    Abstract: A key structure includes a support shaft, a resilience sheet, a pedestal and a keycap. While the keycap is pressed down in response to an external force, the support shaft is moved downwardly and the resilience sheet is correspondingly moved. Since a resilience part of the resilience sheet is pushed by a push part of the pedestal, the resilience part is subjected to deformation. After the resilience part is moved across the push part, the resilience part is elastically restored and swung. Consequently, the resilience part collides with the inner surface of the sliding groove to generate a click sound.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: May 19, 2020
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Sheng-An Tsai, Li-Jen Chien, Hsiang-Wen Cheng
  • Patent number: 10490369
    Abstract: The present invention provides a key structure, including: a key pedestal, a key support shaft, a keycap, a rotating member, and an elastic element. The key pedestal is provided with a sleeve structure, a press member of the key support shaft is disposed in the sleeve structure, and the rotating member and the elastic element are disposed in the sleeve structure and located below the press member. When the keycap is pressed by an external force, the press member presses on the rotating member to drive the rotating member to rotate so as to generate a sound.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: November 26, 2019
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Sheng-An Tsai, Li-Jen Chien, Hsiang-Wen Cheng
  • Patent number: 10276328
    Abstract: A keyboard structure includes a keycap, a supporting plate, a connecting element and a clicking element. The keycap has a top surface and a bottom surface. The connecting element is connected with the keycap and the supporting plate. The clicking element is located under the keycap. While the keycap is descended, the clicking element is pressed by the push post and subjected to curvy deformation and then the clicking element is separated from the push post. When the clicking element is elastically restored to an original position to knock on the bottom surface of the keycap, a click sound is generated.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: April 30, 2019
    Assignee: PRIMAX ELECTRONICS LTD
    Inventors: Hsiang-Wen Cheng, Sheng-An Tsai, Li-Jen Chien
  • Publication number: 20190088426
    Abstract: A key structure includes a membrane switch circuit member, a rubbery elastomer, a housing, a triggering element, a metallic elastic element and a keycap. The keycap is disposed on the triggering element. The rubbery elastomer is disposed on the membrane switch circuit member. The housing is located over the rubbery elastomer. The triggering element is movable relative to the housing. The metallic elastic element is contacted with the triggering element. While the keycap is depressed, the triggering element is moved relative to the housing to press the metallic elastic element. While the metallic elastic element is pushed by the triggering element, the metallic elastic element is swung to collide with the triggering element. Consequently, a click sound is generated.
    Type: Application
    Filed: January 9, 2018
    Publication date: March 21, 2019
    Inventors: SHENG-AN TSAI, LI-JEN CHIEN, HSIANG-WEN CHENG, JIA-JUI YANG, PAI-PING HSU
  • Patent number: 10236141
    Abstract: A key structure includes a membrane switch circuit member, a rubbery elastomer, a housing, a triggering element, a metallic elastic element and a keycap. The keycap is disposed on the triggering element. The rubbery elastomer is disposed on the membrane switch circuit member. The housing is located over the rubbery elastomer. The triggering element is movable relative to the housing. The metallic elastic element is contacted with the triggering element. While the keycap is depressed, the triggering element is moved relative to the housing to press the metallic elastic element. While the metallic elastic element is pushed by the triggering element, the metallic elastic element is swung to collide with the triggering element. Consequently, a click sound is generated.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: March 19, 2019
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Sheng-An Tsai, Li-Jen Chien, Hsiang-Wen Cheng, Jia-Jui Yang, Pai-Ping Hsu
  • Patent number: 9496102
    Abstract: In certain embodiments, a protective cover for an input device includes a housing having an outer portion and an inner portion, with the inner portion including a first end and a second end, and a plurality of keys disposed in an area at the first end of the inner portion of the housing. A holder can be configured to receive and secure an input device with at least a portion of the holder coupled to the second end of the inner portion of the housing. The housing can be configurable in a plurality of positions including a closed configuration, an open configuration, a first active configuration, and a second active configuration. The protective cover can further include a plurality of magnets coupled to the housing and configured to secure the housing in one or more of the closed, open, and active configurations.
    Type: Grant
    Filed: March 31, 2013
    Date of Patent: November 15, 2016
    Assignee: LOGITECH EUROPE S.A.
    Inventors: Mathew Bates, Chia Feng Lee, Li-Jen Chien, John Moriarty, Simone Mandelli, James Jackson, Benjamin Riot, Mel Reynolds
  • Patent number: 9390869
    Abstract: Embodiments provide a flexible keyboard including a flexible skin layer and a set of key frame modules coupled to one side of the flexible skin layer. The flexible skin layer can be made of at least one of polyurethane or polyester. The keyframe module can include a metal support plate for conducting a signal and a key structure situated over the metal support plate for providing tactile feedback when the key frame module is actuated. A plastic key cap structure can be situated over the dome structure. The flexible skin layer can be coupled to the plastic key cap. The key structure can be a dome structure where the flexible skin layer is a rubber or a fabric skin layer. The key structure can be a scissors key structure where the flexible skin layer is a rubber skin layer. Flexible key caps can be molded to the flexible skin layer.
    Type: Grant
    Filed: March 31, 2013
    Date of Patent: July 12, 2016
    Assignee: Logitech Europe S.A.
    Inventors: Chia Feng Lee, Li-Jen Chien, Richard Milhe
  • Publication number: 20150282354
    Abstract: Certain embodiments of the invention include a double hinge for an electronic device case, with hinge stoppers integrally formed to prevent rotation beyond 180 degrees. Certain embodiments include a hinge comprising a first hinge plate, a second hinge plate, and a third hinge plate, where the first hinge plate is adapted to be pivotally engaged with the second hinge plate through the third hinge plate. The first and second hinge plates include two shaft bushings coaxially disposed and facing each other at confronting sides, and the third hinge plate comprises two shaft bushings on two opposite sides so that to coaxially dispose each shaft bushing of the third hinge plate with the shaft bushing respectively of the first and second hinge plate.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 1, 2015
    Inventors: Malachy Spollen, Li-Jen Chien, Chia Feng Lee, Ming Sung Ku
  • Publication number: 20140262715
    Abstract: Embodiments provide a flexible keyboard including a flexible skin layer and a set of key frame modules coupled to one side of the flexible skin layer. The flexible skin layer can be made of at least one of polyurethane or polyester. The keyframe module can include a metal support plate for conducting a signal and a key structure situated over the metal support plate for providing tactile feedback when the key frame module is actuated. A plastic key cap structure can be situated over the dome structure. The flexible skin layer can be coupled to the plastic key cap. The key structure can be a dome structure where the flexible skin layer is a rubber or a fabric skin layer. The key structure can be a scissors key structure where the flexible skin layer is a rubber skin layer. Flexible key caps can be molded to the flexible skin layer.
    Type: Application
    Filed: March 31, 2013
    Publication date: September 18, 2014
    Applicant: Logitech Europe S.A.
    Inventors: Chia Feng Lee, Li-Jen Chien, Richard Milhe
  • Patent number: 8800937
    Abstract: A laptop stand configured to support a laptop computer on a surface at a plurality of angles includes a platen configured to support the laptop computer. A leg is pivotally coupled to the platen. A support arm is slide coupled to the platen and pivotally coupled to the leg. A latch is coupled to the support arm and is configured to latch and to unlatch from the platen at a plurality of latch points. The latch at the plurality of latch points positions the support arm at a first plurality of angles with respect to the platen and the leg. The latch at the plurality of latch points also positions the platen and the leg at a second plurality of angles with respect to one another. The latch is configured to slide with respect to the platen to move the support arm to rotate the leg with respect to the platen.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: August 12, 2014
    Assignee: Logitech Europe S.A.
    Inventors: Chia Feng Lee, Hsin-Hao Hsu, Li-Jen Chien, Simone Chevalley, Sylvain Sauvage, Alain Tabasso, Cathal Loughnane
  • Publication number: 20140071606
    Abstract: In certain embodiments, a protective cover for an input device includes a housing having an outer portion and an inner portion, with the inner portion including a first end and a second end, and a plurality of keys disposed in an area at the first end of the inner portion of the housing. A holder can be configured to receive and secure an input device with at least a portion of the holder coupled to the second end of the inner portion of the housing. The housing can be configurable in a plurality of positions including a closed configuration, an open configuration, a first active configuration, and a second active configuration. The protective cover can further include a plurality of magnets coupled to the housing and configured to secure the housing in one or more of the closed, open, and active configurations.
    Type: Application
    Filed: March 31, 2013
    Publication date: March 13, 2014
    Applicant: Logitech Europe S.A.
    Inventors: Mathew Bates, Chia Feng Lee, Li-Jen Chien, John Moriarty, Simone Mandelli, James Jackson, Benjamin Riot, Mel Reynolds
  • Publication number: 20140071654
    Abstract: A method includes forming one or more holes in a flexible fabric layer, infusing polyurethane (PU) clay into the molding tool to form one or more key caps, and placing a flexible fabric layer over the molding tool, the holes being aligned with the key caps. Heat and pressure can be used over the fabric to bond the key caps to the fabric layer. A first layer and second layer of paint can be placed in the molding tool, followed by a laser etching process to etch a portion of the one or more key caps to remove a corresponding portion of the first layer of paint such that a portion of the second layer of paint is exposed. In some cases, the exposed portion of the second layer can be illuminated by the light source, which can be directed to the key cap by a light guide.
    Type: Application
    Filed: March 31, 2013
    Publication date: March 13, 2014
    Applicant: Logitech Europe S.A.
    Inventors: Li-Jen Chien, An-Ni Chen
  • Publication number: 20140071605
    Abstract: Aspects of the invention relate to an apparatus including a housing and a slot disposed in the housing, the slot configured to hold an input device in a plurality of upright configurations including at least a forward-facing upright configuration such that the input device faces the front portion of the housing, and at least a backward-facing upright configuration such that the input device faces the back portion of the housing. The slot can be overmolded with a rubber compound (e.g. silicon-based) and configured to provide an improved coefficient of friction to reduce slippage of the input device when held in the slot. In some aspects, the housing includes a surface, and the overmolded portion of the slot can protrude above the surface of the housing.
    Type: Application
    Filed: March 29, 2013
    Publication date: March 13, 2014
    Applicant: Logitech Europe S.A.
    Inventors: Mathew Bates, Brian Stephens, Simone Mandelli, Alexis Richard, Richard Milhe, Li Lun Wen, Chia Feng Lee, Li-Jen Chien, Pai-Cheng Chu, Chen-Ming Hsu, Tzu-Pin Lin, Zhaoyang Han, An-Ni Chen, Sylvain Sauvage, Malachy Spollen, John Moriarty, James Jackson, James Lynch, Ronan Carroll
  • Publication number: 20140069792
    Abstract: In certain embodiments, an input device includes a key frame having a top surface and comprised of a flexible fabric, and a plurality of key caps disposed on the surface of the key frame, where the key caps do not pass through the key frame. In some cases, the plurality of key caps can be comprised of a flexible material such as polyurethane (PU). The key frame can be comprised of PU or a flexible polyester. The input device can further include an outer shell having an exterior portion and an interior portion and the interior portion having a front side and a back side. The key frame can be coupled to the interior portion such that the plurality of key caps is configured on the interior portion and front side of the outer shell.
    Type: Application
    Filed: March 31, 2013
    Publication date: March 13, 2014
    Applicant: Logitech Europe S.A.
    Inventors: Mathew Bates, Richard Milhe, Chia Feng Lee, Li-Jen Chien, Pai-Cheng Chu, Tzu-Pin Lin, Malachy Spollen, Benjamin Riot, Dennis O'Keeffe, Stephen Harvey, Maider Irastorza
  • Patent number: 8058579
    Abstract: A key module for a keyboard includes a key having a guiding plunger, and a key housing having a set of walls with an opening formed by the set of walls. The opening formed by the set of walls is configured to receive the guiding plunger. The set of walls includes at least eight guiding surfaces configured to contact the guiding plunger. The guiding plunger is configured to contact the eight guiding surfaces as the guiding plunger moves up and down in the opening.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: November 15, 2011
    Assignee: Logitech Europe S.A.
    Inventors: Li-Jen Chien, Hsin-Hao Hsu, Jui-Sheng Jao, Olivier Dumont, Patrick Monney, Antoine Merminod
  • Publication number: 20100307903
    Abstract: A key module for a keyboard includes a key having a guiding plunger, and a key housing having a set of walls with an opening formed by the set of walls. The opening formed by the set of walls is configured to receive the guiding plunger. The set of walls includes at least eight guiding surfaces configured to contact the guiding plunger. The guiding plunger is configured to contact the eight guiding surfaces as the guiding plunger moves up and down in the opening.
    Type: Application
    Filed: January 5, 2010
    Publication date: December 9, 2010
    Applicant: Logitech Europe S.A.
    Inventors: Li-Jen Chien, Hsin-Hao Hsu, Jui-Sheng Jao, Olivier Dumont, Patrick Monney, Antoine Merminod