Patents by Inventor Liang-Ta Yeh
Liang-Ta Yeh 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: 11424090Abstract: A keyswitch support connection structure incudes a bottom plate portion and a joining portion firmly joined with a joining hole of a bottom plate portion to form a support connection portion. In an embodiment, a cantilever plate extends upward from the joining hole. The joining portion encapsulates a holding structure of the cantilever plate. In another embodiment, a protruding bridge portion connected across two sides of the joining hole. The joining portion encapsulates the protruding bridge portion. In another embodiment, the joining portion has a wing portion protruding from a bottom surface of the bottom plate portion and extending parallel to the bottom surface. A keyswitch structure includes a base with the keyswitch support connection structure, a keycap, and two keyswitch supports. The two keyswitch supports are connected to and between the keycap and the base; therein, one of the keyswitch supports is rotatably connected to the support connection portion.Type: GrantFiled: March 30, 2021Date of Patent: August 23, 2022Assignee: DARFON ELECTRONICS CORP.Inventors: Po-Chun Hou, Chin-Hung Lin, Liang-Ta Yeh, Ling-Hsi Chao
-
Patent number: 11328879Abstract: A keyswitch structure includes a base plate, a keycap, a scissors support connecting the keycap and the base plate, a linking support rotatably disposed on the base plate, a movable part movably disposed relative to the base plate, and a magnetic part on the movable part. The linking support includes a magnetic portion and a driving portion. The magnetic part and the magnetic portion produce a magnetic attraction force therebetween. When the movable part is located at a first position, the magnetic part is located under the magnetic portion, and the magnetic attraction force drives the keycap through the linking support to move away relative to the base plate. When the movable part moves from the first position to a second position, the magnetic part moves away relative to the magnetic portion, so that the magnetic attraction force decreases so as to make the keycap move toward the base plate.Type: GrantFiled: July 15, 2019Date of Patent: May 10, 2022Assignee: DARFON ELECTRONICS CORP.Inventors: Ming-Yuan Hsieh, Liang-Ta Yeh
-
Patent number: 11189442Abstract: A keyswitch structure includes a base plate, a keycap, a lift mechanism connecting the keycap and the base plate, a movable part movably disposed relative to the base plate, a linking support, and a magnetic part on the base plate. The linking support has a pivotal connection portion, a magnetic portion, and a driving portion. The magnetic part and the magnetic portion produce a magnetic attraction force therebetween. When the movable part is located at a first position, the pivotal connection portion is rotatably disposed on a protruding portion of the movable part, and the magnetic attraction force drives the keycap through the linking support to move away relative to the keycap. When the movable part moves from the first position to a second position, the protruding portion moves away, so that the pivotal connection portion falls down and the keycap moves toward the base plate.Type: GrantFiled: July 16, 2019Date of Patent: November 30, 2021Assignee: DARFON ELECTRONICS CORP.Inventors: Ming-Yuan Hsieh, Ling-Hsi Chao, Liang-Ta Yeh
-
Publication number: 20210304981Abstract: A keyswitch support connection structure incudes a bottom plate portion and a joining portion firmly joined with a joining hole of a bottom plate portion to form a support connection portion. In an embodiment, a cantilever plate extends upward from the joining hole. The joining portion encapsulates a holding structure of the cantilever plate. In another embodiment, a protruding bridge portion connected across two sides of the joining hole. The joining portion encapsulates the protruding bridge portion. In another embodiment, the joining portion has a wing portion protruding from a bottom surface of the bottom plate portion and extending parallel to the bottom surface. A keyswitch structure includes a base with the keyswitch support connection structure, a keycap, and two keyswitch supports. The two keyswitch supports are connected to and between the keycap and the base; therein, one of the keyswitch supports is rotatably connected to the support connection portion.Type: ApplicationFiled: March 30, 2021Publication date: September 30, 2021Inventors: Po-Chun Hou, Chin-Hung Lin, Liang-Ta Yeh, Ling-Hsi Chao
-
Publication number: 20210304979Abstract: A keyswitch support connection structure incudes a bottom plate portion, a cantilever plate, and a joining portion. The cantilever plate extends upward from a joining hole of the bottom plate portion and has a holding structure. The joining portion and the joining hole are firmly engaged with each other. The joining portion encapsulates the holding structure. The joining portion and the bottom plate portion jointly form or the joining portion alone forms a support connection portion. A keyswitch structure includes a base, a keycap above the base, and first and second keyswitch supports connected to and between the keycap and the base. The base includes the above keyswitch support connection structure. The first keyswitch support is rotatably connected to the support connection portion.Type: ApplicationFiled: March 30, 2021Publication date: September 30, 2021Inventors: Po-Chun Hou, Chin-Hung Lin, Liang-Ta Yeh, Ling-Hsi Chao
-
Publication number: 20200381195Abstract: A keyswitch structure includes a base plate, a keycap, a lift mechanism connecting the keycap and the base plate, a movable part movably disposed relative to the base plate, a linking support, and a magnetic part on the base plate. The linking support has a pivotal connection portion, a magnetic portion, and a driving portion. The magnetic part and the magnetic portion produce a magnetic attraction force therebetween. When the movable part is located at a first position, the pivotal connection portion is rotatably disposed on a protruding portion of the movable part, and the magnetic attraction force drives the keycap through the linking support to move away relative to the keycap. When the movable part moves from the first position to a second position, the protruding portion moves away, so that the pivotal connection portion falls down and the keycap moves toward the base plate.Type: ApplicationFiled: July 16, 2019Publication date: December 3, 2020Inventors: Ming-Yuan Hsieh, Ling-Hsi Chao, Liang-Ta Yeh
-
Publication number: 20200381194Abstract: A keyswitch structure includes a base plate, a keycap, a scissors support connecting the keycap and the base plate, a linking support rotatably disposed on the base plate, a movable part movably disposed relative to the base plate, and a magnetic part on the movable part. The linking support includes a magnetic portion and a driving portion. The magnetic part and the magnetic portion produce a magnetic attraction force therebetween. When the movable part is located at a first position, the magnetic part is located under the magnetic portion, and the magnetic attraction force drives the keycap through the linking support to move away relative to the base plate. When the movable part moves from the first position to a second position, the magnetic part moves away relative to the magnetic portion, so that the magnetic attraction force decreases so as to make the keycap move toward the base plate.Type: ApplicationFiled: July 15, 2019Publication date: December 3, 2020Inventors: Ming-Yuan Hsieh, Liang-Ta Yeh
-
Patent number: 10804049Abstract: A keyswitch structure includes a base plate, a keycap, a scissors support connecting the keycap and the base plate, a linking support rotatably disposed on the base plate, a movable part movably disposed relative to the base plate, and a magnetic part on the movable part. The linking support includes a magnetic portion and a driving portion. The magnetic part and the magnetic portion produce a magnetic attraction force therebetween. When the movable part is located at a first position, the magnetic part is located under the magnetic portion, and the magnetic attraction force drives the keycap through the linking support to move away relative to the base plate. When the movable part moves from the first position to a second position, the magnetic part moves away relative to the magnetic portion, so that the magnetic attraction force decreases so as to make the keycap move toward the base plate.Type: GrantFiled: February 13, 2020Date of Patent: October 13, 2020Assignee: DARFON ELECTRONICS CORP.Inventors: Ming-Yuan Hsieh, Liang-Ta Yeh, Po-Chun Hou, Chin-Hung Lin
-
Patent number: 10332695Abstract: A key switch includes a baseplate, a circuit layer, a keycap and a support rod. The baseplate has a hook and a first through hole neighboring to the hook. The circuit layer includes a plurality of superimposed sublayers disposed above the baseplate and having a through hole structure passing through the sublayers; a portion of one of the sublayers extends in the through hole structure over the first through hole and forms a resilient portion neighboring to the hook. Two sides of the resilient portion connect to the circuit layer. The keycap is disposed above the baseplate and can move upward and downward in respect to the baseplate. The support rod has a first portion, movably connecting to the keycap, and a second portion, engaged with the hook. The resilient portion extends beneath and abuts against the second portion for buffering a collision between the second portion and the baseplate.Type: GrantFiled: July 5, 2018Date of Patent: June 25, 2019Assignee: DARFON ELECTRONICS CORP.Inventors: Pen-Hui Liao, Liang-Ta Yeh
-
Publication number: 20180315555Abstract: A key switch includes a baseplate, a circuit layer, a keycap and a support rod. The baseplate has a hook and a first through hole neighboring to the hook. The circuit layer includes a plurality of superimposed sublayers disposed above the baseplate and having a through hole structure passing through the sublayers; a portion of one of the sublayers extends in the through hole structure over the first through hole and forms a resilient portion neighboring to the hook. Two sides of the resilient portion connect to the circuit layer. The keycap is disposed above the baseplate and can move upward and downward in respect to the baseplate. The support rod has a first portion, movably connecting to the keycap, and a second portion, engaged with the hook. The resilient portion extends beneath and abuts against the second portion for buffering a collision between the second portion and the baseplate.Type: ApplicationFiled: July 5, 2018Publication date: November 1, 2018Inventors: Pen-Hui Liao, Liang-Ta Yeh
-
Patent number: 10049828Abstract: A key switch includes a baseplate, a circuit layer, a keycap and a support rod. The baseplate has a hook and a first through hole neighboring to the hook. The circuit layer includes a first sublayer disposed above the baseplate and having a second through hole, and a second sublayer disposed above the first sublayer and having a third through hole; a portion of the second sublayer extends over the second through hole and forms a first resilient portion; the first resilient portion has four sides, two of which connect to the second sublayer; and the first resilient portion is neighboring to the hook. The keycap is disposed above the baseplate and can move upward and downward in respect to the baseplate. The support rod has a first portion and a second portion; the first portion movably connects to the keycap and the second portion engages the hook.Type: GrantFiled: October 27, 2017Date of Patent: August 14, 2018Assignee: DARFON ELECTRONICS CORP.Inventors: Pen-Hui Liao, Liang-Ta Yeh
-
Publication number: 20180053606Abstract: A key switch includes a baseplate, a circuit layer, a keycap and a support rod. The baseplate has a hook and a first through hole neighboring to the hook. The circuit layer includes a first sublayer disposed above the baseplate and having a second through hole, and a second sublayer disposed above the first sublayer and having a third through hole; a portion of the second sublayer extends over the second through hole and forms a first resilient portion; the first resilient portion has four sides, two of which connect to the second sublayer; and the first resilient portion is neighboring to the hook. The keycap is disposed above the baseplate and can move upward and downward in respect to the baseplate. The support rod has a first portion and a second portion; the first portion movably connects to the keycap and the second portion engages the hook.Type: ApplicationFiled: October 27, 2017Publication date: February 22, 2018Inventors: Pen-Hui Liao, Liang-Ta Yeh
-
Publication number: 20180025858Abstract: A light emitting keyswitch includes a board, a cap, a lifting mechanism disposed between the board and the cap, a membrane switch including first and second substrates, an LED, and a transparent hollow elastic body. The first substrate has a first outer surface and a first inner surface. The second substrate has a second outer surface and a second inner surface. A switch circuit is disposed between the first and second inner surfaces. A copper circuit is formed on the second inner surface. A hole is formed on the first substrate. The LED is disposed on the second substrate, passes through the hole and is coupled to the copper circuit. The transparent hollow elastic body is attached to the first outer surface for covering the LED and the hole and is located under the cap. When the cap is pressed, the lifting mechanism or the cap triggers the switch circuit.Type: ApplicationFiled: July 18, 2017Publication date: January 25, 2018Inventors: Chin-Hung Lin, Liang-Ta Yeh
-
Patent number: 9837221Abstract: A key switch includes a baseplate, a circuit layer, a keycap and a support rod. The baseplate has a hook and a first through hole neighboring to the hook. The circuit layer includes a first sublayer disposed above the baseplate and having a second through hole, and a second sublayer disposed above the first sublayer and having a third through hole; a portion of the second sublayer extends over the second through hole and forms a first resilient portion; the first resilient portion has four sides, two of which connect to the second sublayer; and the first resilient portion is neighboring to the hook. The keycap is disposed above the baseplate and can move upward and downward in respect to the baseplate. The support rod has a first portion and a second portion; the first portion movably connects to the keycap and the second portion engages the hook.Type: GrantFiled: February 22, 2016Date of Patent: December 5, 2017Assignee: Darfon Electronics Corp.Inventors: Pen-Hui Liao, Liang-Ta Yeh
-
Publication number: 20160284484Abstract: A key switch includes a baseplate, a circuit layer, a keycap and a support rod. The baseplate has a hook and a first through hole neighboring to the hook. The circuit layer includes a first sublayer disposed above the baseplate and having a second through hole, and a second sublayer disposed above the first sublayer and having a third through hole; a portion of the second sublayer extends over the second through hole and forms a first resilient portion; the first resilient portion has four sides, two of which connect to the second sublayer; and the first resilient portion is neighboring to the hook. The keycap is disposed above the baseplate and can move upward and downward in respect to the baseplate. The support rod has a first portion and a second portion; the first portion movably connects to the keycap and the second portion engages the hook.Type: ApplicationFiled: February 22, 2016Publication date: September 29, 2016Inventors: Pen-Hui Liao, Liang-Ta Yeh
-
Patent number: 9312079Abstract: A key switch disposed on a base of a keyboard includes a key cap, a linkage bar, an edge plate and a recess portion. The key cap is disposed above the base. The linkage bar connects the key cap and the base. The edge plate is connected to the base. A slot is formed on the edge plate, and an end of the linkage bar is slidably latched in the slot. The recess portion is formed on the base and adjacent to the slot. A step is between a holding surface of the recess portion and a top surface of the base. The end of the linkage bar is caved in the recess portion and held on the holding surface of the recess portion when the end of the linkage bar is slidably latched in the slot.Type: GrantFiled: April 28, 2014Date of Patent: April 12, 2016Assignees: DARFON ELECTRONICS (SUZHOU) CO., LTD., DARFON ELECTRONICS CORP.Inventors: Chao-Lung Chang, Liang-Ta Yeh
-
Publication number: 20140367240Abstract: A key switch disposed on a base of a keyboard is disclosed. The key switch includes a key cap, an edge plate, a linkage bar and a sliding end. The key cap is disposed above the base. The edge plate is connected to the base, and a slot is formed on the edge plate. The linkage bar is for connecting the keycap and the base. The sliding end is connected to an end of the linkage bar, and the sliding end is slidably disposed in the slot and abuts against a top surface of the base, wherein a cross section area of the sliding end is smaller than a cross section area of the end of the linkage bar.Type: ApplicationFiled: May 8, 2014Publication date: December 18, 2014Applicants: DARFON ELECTRONICS (SUZHOU) CO., LTD., DARFON ELECTRONICS CORP.Inventors: Chin-Hung Lin, Liang-Ta Yeh
-
Publication number: 20140339064Abstract: A key switch disposed on a base of a keyboard includes a key cap, a linkage bar, an edge plate and a recess portion. The key cap is disposed above the base. The linkage bar connects the key cap and the base. The edge plate is connected to the base. A slot is formed on the edge plate, and an end of the linkage bar is slidably latched in the slot. The recess portion is formed on the base and adjacent to the slot. A step is between a holding surface of the recess portion and a top surface of the base. The end of the linkage bar is caved in the recess portion and held on the holding surface of the recess portion when the end of the linkage bar is slidably latched in the slot.Type: ApplicationFiled: April 28, 2014Publication date: November 20, 2014Applicants: DARFON ELECTRONICS (SUZHOU) CO., LTD., DARFON ELECTRONICS CORP.Inventors: Chao-Lung Chang, Liang-Ta Yeh
-
Patent number: 8231236Abstract: The invention provides a light guiding plate. The light guiding plate is transparent and applied to an input apparatus. A surface of the light guiding plate comprises a first region and a second region. The first region is covered by a non-transparent material. If a light is emitted into the light guiding plate, the light can be emitted out from the second region.Type: GrantFiled: October 7, 2009Date of Patent: July 31, 2012Assignee: Dafron Electronics Corp.Inventors: Chih-Hsiang Chiang, Chih-Chung Yen, Liang-Ta Yeh
-
Patent number: 8110764Abstract: A key structure is provided, including a substrate, a key cap, a first link, and a second link pivotally connected to the first link. The first and second links movably connect the key cap with the base. The key cap comprises a first surface and a guiding portion extended along a first direction, wherein the guiding portion has a second surface. The first link is made of metal and has a sliding end forming a first curved portion and a second curved portion. The first and second curved portions are respectively adjacent to the first and second surfaces and slidable along the guiding portion.Type: GrantFiled: May 27, 2009Date of Patent: February 7, 2012Assignee: Darfon Electronics Corp.Inventors: Chien-Shih Hsu, Liang-Ta Yeh