Patents by Inventor Chia-Hung Liu

Chia-Hung Liu 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: 20190214987
    Abstract: An optical keyswitch includes a casing having a movable portion, a shaft movably disposed on the casing, a resilient member accommodated in the casing, and a switch module including a circuit board, an emitter, and a receiver. The emitter emits an optical signal along an optical path to the receiver. When the shaft is at a non-pressed position, the movable portion has a first spatial relation with the optical path, and the receiver receives the optical signal of a first intensity. When the shaft moves, in response to a pressing force, to a pressed position, the shaft compresses the resilient member and pushes the movable portion to move, so the movable portion no longer has the first spatial relation with the optical path, the optical signal received by the receiver has a second intensity different from the first intensity, and the switch module is triggered to generate a triggering signal.
    Type: Application
    Filed: January 4, 2019
    Publication date: July 11, 2019
    Inventors: Yung-Chih WANG, Yu-Chun Hsieh, Chen Yang, Chia-Hung LIU
  • Publication number: 20190214988
    Abstract: An optical keyswitch includes a keycap, a supporting mechanism having a protrusion disposed under the keycap to support the keycap to move downward or upward, and a switch module including a circuit board, an emitter, and a receiver. The emitter and the receiver are electrically connected to the circuit board. The emitter emits an optical signal to the receiver. When the keycap is not pressed, the receiver receives the optical signal of a first intensity. When the keycap is pressed, the protrusion moves along with the keycap, and the protrusion changes the optical signal received by the receiver to have a second intensity different from the first intensity, so the switch module is triggered to generate a triggering signal.
    Type: Application
    Filed: January 4, 2019
    Publication date: July 11, 2019
    Inventors: Chen Yang, Yu-Chun Hsieh, Yung-Chih Wang, Chia-Hung LIU
  • Patent number: 10347720
    Abstract: The present disclosure relates generally to doping for conductive features in a semiconductor device. In an example, a structure includes an active region of a transistor. The active region includes a source/drain region, and the source/drain region is defined at least in part by a first dopant having a first dopant concentration. The source/drain region further includes a second dopant with a concentration profile having a consistent concentration from a surface of the source/drain region into a depth of the source/drain region. The consistent concentration is greater than the first dopant concentration. The structure further includes a conductive feature contacting the source/drain region at the surface of the source/drain region.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: July 9, 2019
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Su-Hao Liu, Huicheng Chang, Chia-Cheng Chen, Liang-Yin Chen, Kuo-Ju Chen, Chun-Hung Wu, Chang-Miao Liu, Huai-Tei Yang, Lun-Kuang Tan, Wei-Ming You
  • Patent number: 10347762
    Abstract: Embodiments disclosed herein relate generally to forming an ultra-shallow junction having high dopant concentration and low contact resistance in a p-type source/drain region. In an embodiment, a method includes forming a source/drain region in an active area on a substrate, the source/drain region comprising germanium, performing an ion implantation process using gallium (Ga) to form an amorphous region in the source/drain region, performing an ion implantation process using a dopant into the amorphous region, and subjecting the amorphous region to a thermal process.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: July 9, 2019
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Su-Hao Liu, Kuo-Ju Chen, Chun-Hung Wu, Chia-Cheng Chen, Liang-Yin Chen, Huicheng Chang, Ying-Lang Wang
  • Publication number: 20190187067
    Abstract: A detection system for a multilayer film is provided. The detection system for a multilayer film includes a light source device, a first image capture device, a second image capture device and an image processing device. The light source device projects a pair of parallel incident light to a transparent multilayer film obliquely. The pair of parallel incident light is projected onto the transparent multilayer film for producing and enabling a forward scattered light and a back scattered light to be projected therefrom. The first image capture device captures the back scattered light to produce a first image. The second image capture device captures the forward scattered light to produce a second image. The image processing device is coupled to the first image capture device and the second image capture device. The image processing device is used to compares and detect the differences between the second image and the first image.
    Type: Application
    Filed: December 19, 2017
    Publication date: June 20, 2019
    Inventors: Ding-Kun Liu, Chia-Hung Cho
  • Publication number: 20190172661
    Abstract: A button switch connected to a cap and includes a base having a pillar, a flexible acoustic member having fixing and flexible rods, a sleeve, an upward-force-applying member abutting against the sleeve and the base, a resilient arm, and a cover disposed on the base. The sleeve rotatably jackets the pillar, passes through the cover to be connected to the cap, and has first and second convex portions, first and second concave portions, and a protruding edge located between the second convex portion and the second concave portion. The resilient arm selectively abuts against a first or second position on the first convex portion. When the resilient arm abuts against the first position and the protruding edge is located above the flexible rod, the flexible rod crosses the protruding edge and then collides with the cover to make a sound when the sleeve receives an external force to move downward.
    Type: Application
    Filed: August 21, 2018
    Publication date: June 6, 2019
    Inventors: Yu-Chun Hsieh, Chia-Hung Liu, Yung-Chih Wang, Chen Yang
  • Patent number: 10310609
    Abstract: A keyswitch includes a cap, internal and external sleeves, a resilient arm, a base having a pillar, and an elastic member abutting against the internal sleeve and the base. The internal sleeve jackets the pillar, abuts against the cap and has a first outer annular surface with a transverse slot. The external sleeve jackets the internal sleeve and has a protruding block movably inserted into the transverse slot for guiding the external sleeve to rotate and a second outer annular surface having concave and convex portions and an arc-shaped bar. When the resilient arm abuts against a second position on the convex portion and the cap presses the external sleeve, the resilient arm crosses the arc-shaped bar. When the resilient arm abuts against a first position on the convex portion and the cap presses the external sleeve, the resilient arm does not need to cross the arc-shaped bar.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: June 4, 2019
    Assignee: DARFON ELECTRONICS CORP.
    Inventor: Chia-Hung Liu
  • Publication number: 20190163273
    Abstract: A keyswitch with adjustable tactile feedback is adjusted by an adjusting method. The keyswitch includes a baseplate, an upper housing, an upper bushing component, a lower bushing component, a keycap and a recovering component. The baseplate has an electrode module, the upper housing is disposed on the baseplate, the upper bushing component is movably disposed on the upper housing, the lower bushing component is movably located between the baseplate and the upper housing, and the keycap is connected to a connecting portion of the upper bushing component. The lower bushing component can rotate relative to the baseplate to switch between a first position and a second position. The lower bushing component has a first lateral surface and a second lateral surface with different shapes. The recovering component is disposed between the baseplate and the lower bushing component to upwardly push the lower bushing component.
    Type: Application
    Filed: September 13, 2018
    Publication date: May 30, 2019
    Inventors: Chen Yang, Chia-Hung Liu, Yung-Chih Wang, Yu-Chun Hsieh
  • Publication number: 20190164703
    Abstract: A keyswitch with adjustable tactile feedback is adjusted by an adjusting method. The keyswitch includes a baseplate, an upper housing, an upper bushing component, a lower bushing component, a keycap and a recovering component. The baseplate has an electrode module, the upper housing is disposed on the baseplate, the upper bushing component is movably disposed on the upper housing, the lower bushing component is movably located between the baseplate and the upper housing, and the keycap is connected to a connecting portion of the upper bushing component. The lower bushing component can rotate relative to the baseplate to switch between a first position and a second position. The lower bushing component has a first lateral surface and a second lateral surface with different shapes. The recovering component is disposed between the baseplate and the lower bushing component to upwardly push the lower bushing component.
    Type: Application
    Filed: September 12, 2018
    Publication date: May 30, 2019
    Inventors: Chen Yang, Chia-Hung Liu, Yung-Chih Wang, Yu-Chun Hsieh
  • Publication number: 20190140332
    Abstract: A radio-frequency switching circuit includes a first diode, a second diode, a first inductor, a second inductor, a first capacitor, and a second capacitor. Cathodes of the first diode and the second diode are configured to receive a first reference voltage. A first inductor is coupled with an anode of the first diode, and configured to receive a first control voltage. A second inductor is coupled with an anode of the second diode, and configured to receive a second control voltage. The first capacitor is coupled with the first node of the first inductor. The second capacitor is coupled with the first node of the second inductor. When the first control voltage is lower than the first reference voltage, the first diode is switched off. When the second control voltage is lower than the first reference voltage, the second diode is switched off.
    Type: Application
    Filed: October 24, 2018
    Publication date: May 9, 2019
    Inventors: Yu-Jeng KUO, Wei-Chun TSAO, Chia-Hung LIU
  • Publication number: 20190088564
    Abstract: A package structure and a method of manufacturing the same are provided. The package structure includes a die, a redistribution layer (RDL) structure, a through integrated fan-out via (TIV) and a first connector. The RDL structure is connected to the die and includes a plurality of RDLs. The TIV is aside the die and penetrates through the RDL structure. The first connector is in electrical contact with the TIV and electrically connected to the die. The TIV is in electrical contact with the RDLs of the RDL structure.
    Type: Application
    Filed: September 18, 2017
    Publication date: March 21, 2019
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Hsuan Tai, Chih-Hua Chen, Hao-Yi Tsai, Yu-Chih Huang, Chia-Hung Liu, Ting-Ting Kuo
  • Patent number: 10211006
    Abstract: An illuminated keyswitch includes a base, a keycap, a lift mechanism, and a light source. The keycap includes a cap body and a light guiding rod. The lift mechanism is connected to between the light guiding rod and the base, such that the keycap can vertically move relative to the base through the lift mechanism. The light source is disposed between the light guiding rod and the base and emits light toward the light guiding rod. The light enters the light guiding rod through an end portion of the light guiding rod and then emits out the light guiding rod from another end portion of the light guiding rod and a side surface adjacent to the another end portion toward the cap body. Thereby, the whole cap body can receives relatively uniform back light.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: February 19, 2019
    Assignees: DARFON ELECTRONICS (SUZHOU) CO., LTD., DARFON ELECTRONICS CORP.
    Inventors: Rui-Ming Liao, Chih-Chung Yen, Chia-Hung Liu
  • Patent number: 10128063
    Abstract: A keyswitch uses a combination of springs connected in serial for providing a return force to a keycap of the keyswitch. When the keycap moves toward a base of the keyswitch beyond a transition position, one of the springs stops continuously deforming. It leads to an increment of the elastic coefficient of the combination of springs and an increment of the elastic stored energy by the combination of springs. Therefore, during a pressing on the keycap, the keycap can provide a light force feedback and then a heavy force feedback to a user. Further, the keyswitch can use a switch with a lateral motion, which can reduce influence of a resilient force produced by the switch on the up and down movement of the keycap. The keyswitch also can use an elastic piece disposed beside the keycap, which can provide a tactile feedback to the user.
    Type: Grant
    Filed: January 14, 2018
    Date of Patent: November 13, 2018
    Assignees: DARFON ELECTRONICS (SUZHOU) CO., LTD., DARFON ELECTRONICS CORP.
    Inventors: Rui-Ming Liao, Chih-Chung Yen, Hung-Chieh Lo, Chia-Hung Liu
  • Patent number: 10079601
    Abstract: A keyswitch includes a base having a pillar, a cap having a rib and movable relative to the base, a sleeve rotatably sleeving the pillar and having first and second top surfaces and convex and concave portions, an elastic member abutting against the sleeve and the base, and a resilient arm abutting against a first or second position on the convex portion with rotation of the sleeve. When the resilient arm abuts against the first position, the rib abuts against the first top surface to prepress the elastic member for generating a first preload. When the cap is pressed for moving the sleeve downward, the resilient arm moves from the first or second position to the concave portion. When the resilient arm abuts against the second position, the rib abuts against the second top surface to prepress the elastic member for generating a second preload larger than the first preload.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: September 18, 2018
    Assignee: DARFON ELECTRONICS CORP.
    Inventor: Chia-Hung Liu
  • Patent number: 10074615
    Abstract: A package structure including at least one conductive plate, a redistribution layer, a first semiconductor chip, a conductive shielding structure and an insulating encapsulant is provided. The first semiconductor chip is sandwiched in between the at least one conductive plate and the redistribution layer, wherein the first semiconductor chip is disposed on the at least one conductive plate and electrically connected to the redistribution layer. The conductive shielding structure is sandwiched in between the at least one conductive plate and the redistribution layer, wherein the conductive shielding structure surrounds the first semiconductor chip and electrically connects the at least one conductive plate with the redistribution layer. The insulating encapsulant is disposed on the redistribution layer, encapsulating the first semiconductor chip, the conductive shielding structure, and surrounding the at least one conductive plate.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: September 11, 2018
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ying-Cheng Tseng, Chih-Hua Chen, Hsiu-Jen Lin, Hao-Yi Tsai, Kuo-Chung Yee, Chia-Hung Liu
  • Patent number: 10068726
    Abstract: A keyswitch uses a combination of springs connected in serial for providing a return force to a keycap of the keyswitch. When the keycap moves toward a base of the keyswitch beyond a transition position, one of the springs stops continuously deforming. It leads to an increment of the elastic coefficient of the combination of springs and an increment of the elastic stored energy by the combination of springs. Therefore, during a pressing on the keycap, the keycap can provide a light force feedback and then a heavy force feedback to a user. Further, the keyswitch can use a switch with a lateral motion, which can reduce influence of a resilient force produced by the switch on the up and down movement of the keycap. The keyswitch also can use an elastic piece disposed beside the keycap, which can provide a tactile feedback to the user.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: September 4, 2018
    Assignees: DARFON ELECTRONICS (SUZHOU) CO., LTD., DARFON ELECTRONICS CORP.
    Inventors: Rui-Ming Liao, Chih-Chung Yen, Hung-Chieh Lo, Chia-Hung Liu
  • Publication number: 20180137994
    Abstract: A keyswitch uses a combination of springs connected in serial for providing a return force to a keycap of the keyswitch. When the keycap moves toward a base of the keyswitch beyond a transition position, one of the springs stops continuously deforming. It leads to an increment of the elastic coefficient of the combination of springs and an increment of the elastic stored energy by the combination of springs. Therefore, during a pressing on the keycap, the keycap can provide a light force feedback and then a heavy force feedback to a user. Further, the keyswitch can use a switch with a lateral motion, which can reduce influence of a resilient force produced by the switch on the up and down movement of the keycap. The keyswitch also can use an elastic piece disposed beside the keycap, which can provide a tactile feedback to the user.
    Type: Application
    Filed: January 14, 2018
    Publication date: May 17, 2018
    Inventors: Rui-Ming Liao, Chih-Chung Yen, Hung-Chieh Lo, Chia-Hung Liu
  • Publication number: 20180107202
    Abstract: A detection method includes: aligning, by a processor, first data with second data according to steps, in which the first data and the second data are associated with equipment for fabricating semiconductor devices; determining, by the processor, a first virtual area according to the first data; determining, by the processor, a second virtual area according to the second data; and displaying, by a display, a result of comparing the first virtual area and the second virtual area, to distinguish whether a fault event exists during the process.
    Type: Application
    Filed: October 18, 2016
    Publication date: April 19, 2018
    Inventors: Yueh-Cheng HSUEH, Yu-Wei LIU, Liang-Lun LEE, Tzu-Chiang LIN, Chun-Yu CHEN, Chia-Hung LIU
  • Patent number: 9941070
    Abstract: A keyswitch structure includes a baseplate having a switch opening, a keycap movably disposed above the baseplate, a circuit board disposed on the baseplate, the circuit board having a through hole, and a mechanical switch disposed below the keycap, the mechanical switch extending through the through hole to be partially received in the switch opening and electrically coupled to the circuit board, wherein when the keycap moves toward the baseplate, the keycap triggers the mechanical switch.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: April 10, 2018
    Assignees: DARFON ELECTRONICS (SUZHOU) CO., LTD., DARFON ELECTRONICS CORP.
    Inventor: Chia-Hung Liu
  • Publication number: 20180074587
    Abstract: A keyswitch includes a cap, internal and external sleeves, a resilient arm, a base having a pillar, and an elastic member abutting against the internal sleeve and the base. The internal sleeve jackets the pillar, abuts against the cap and has a first outer annular surface with a transverse slot. The external sleeve jackets the internal sleeve and has a protruding block movably inserted into the transverse slot for guiding the external sleeve to rotate and a second outer annular surface having concave and convex portions and an arc-shaped bar. When the resilient arm abuts against a second position on the convex portion and the cap presses the external sleeve, the resilient arm crosses the arc-shaped bar. When the resilient arm abuts against a first position on the convex portion and the cap presses the external sleeve, the resilient arm does not need to cross the arc-shaped bar.
    Type: Application
    Filed: September 6, 2017
    Publication date: March 15, 2018
    Inventor: Chia-Hung Liu