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).

  • Patent number: 11108393
    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: Grant
    Filed: January 4, 2019
    Date of Patent: August 31, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Chen Yang, Yu-Chun Hsieh, Yung-Chih Wang, Chia-Hung Liu, Ching-Yu Wang, Li-Te Chang
  • Publication number: 20210249203
    Abstract: A keyswitch structure includes a base, a cap disposed corresponding to the base, a restoring member disposed between the base and the cap, and a tactile adjustment unit. The cap has a cam portion movable relative to the base. The restoring member is configured to provide a restoring force to enable the cam portion to move away from the base. The tactile adjustment unit is disposed corresponding to the cam portion and includes a holder and a tactile feedback member mounted on the holder. The holder is movable relative to the base to change a position of the tactile feedback member relative to the cam portion, so as to change a pressing force required for the cam portion to move toward the base.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 12, 2021
    Inventors: Chen YANG, Chia-Hung LIU, Yu-Chun HSIEH
  • Patent number: 11056412
    Abstract: A semiconductor package includes an encapsulated semiconductor device, a redistribution structure, and a protection layer. The encapsulated semiconductor device includes a semiconductor device and an encapsulating material encapsulating the semiconductor device. The redistribution structure is disposed on the encapsulated semiconductor device and includes a dielectric layer and a redistribution circuit layer electrically connected to the semiconductor device. The protection layer at least covers the dielectric layer, wherein an oxygen permeability or a water vapor permeability of the protection layer is substantially lower than an oxygen permeability or a vapor permeability of the dielectric layer.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: July 6, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Shih-Hao Tseng, Hung-Jui Kuo, Ming-Che Ho, Chia-Hung Liu
  • Publication number: 20210175169
    Abstract: A semiconductor device and a manufacturing method of the same are provided. The semiconductor device includes a substrate having a plurality of active regions, at least one dielectric layer formed on the substrate, and a plurality of contacts disposed in the dielectric layer and contacting with the active regions. The contact is a barrel-shaped structure with a middle portion, a head portion having a perimeter small than that of the middle portion, and an end portion having a perimeter small than that of the middle portion.
    Type: Application
    Filed: December 10, 2019
    Publication date: June 10, 2021
    Applicant: Winbond Electronics Corp.
    Inventors: Shu-Ming Li, Chia-Hung Liu, Tzu-Ming Ou Yang
  • Patent number: 11018667
    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: Grant
    Filed: January 4, 2019
    Date of Patent: May 25, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Chen Yang, Yu-Chun Hsieh, Yung-Chih Wang, Chia-Hung Liu
  • Patent number: 11011501
    Abstract: A package structure including a first redistribution layer, a semiconductor die, through insulator vias, an insulating encapsulant and a second redistribution layer. The first redistribution layer includes a dielectric layer, a conductive layer, and connecting portions electrically connected to the conductive layer. The dielectric layer has first and second surfaces, the connecting portions has a first side, a second side, and sidewalls joining the first side to the second side. The first side of the connecting portions is exposed from and coplanar with the first surface of the dielectric layer. The semiconductor die is disposed on the second surface of the dielectric layer. The through insulator vias are connected to the conductive layer. The insulating encapsulant is disposed on the dielectric layer and encapsulating the semiconductor die and the through insulator vias. The second redistribution layer is disposed on the semiconductor die and over the insulating encapsulant.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: May 18, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chih-Hsuan Tai, Hao-Yi Tsai, Yu-Chih Huang, Chia-Hung Liu, Ting-Ting Kuo, Ban-Li Wu, Ying-Cheng Tseng, Chi-Hui Lai
  • Patent number: 11004786
    Abstract: A package structure includes a die, a TIV, a first encapsulant, a RDL structure, a thermal dissipation structure and a second encapsulant. The die has a first surface and a second surface opposite to each other. The TIV is laterally aside the die. The first encapsulant encapsulates sidewalls of the die and sidewalls of the TIV. The RDL structure is disposed on the first surface of the die and on the first encapsulant, electrically connected to the die and the TIV. The thermal dissipation structure is disposed over the second surface of die and electrically connected to the die through the TIV and the RDL structure. The second encapsulant encapsulates sidewalls of the thermal dissipation structure.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: May 11, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chih-Hsuan Tai, Hao-Yi Tsai, Tsung-Hsien Chiang, Yu-Chih Huang, Chia-Hung Liu, Ban-Li Wu, Ying-Cheng Tseng, Po-Chun Lin
  • Publication number: 20210134980
    Abstract: A method for forming a semiconductor structure includes providing a semiconductor substrate, forming a sacrificial layer over the semiconductor substrate, etching the sacrificial layer to form a sacrificial pattern, etching the semiconductor substrate using the sacrificial pattern as an etching mask to form an active region of the semiconductor substrate, trimming the sacrificial pattern, and replacing the trimmed sacrificial pattern with a gate electrode.
    Type: Application
    Filed: November 5, 2019
    Publication date: May 6, 2021
    Inventors: Shu-Ming LEE, Yung-Han CHIU, Chia-Hung LIU, Tzu-Ming OU YANG
  • Publication number: 20210126230
    Abstract: A battery assembly includes a battery holding unit and a battery unit removably held by the battery holding unit. The battery unit includes a battery, a first engaging portion, and a second engaging portion. The battery holding unit includes a holding member selectively engaged with the first engaging portion or the second engaging portion to hold the battery unit at a first position or a second position. When the holding member and the first engaging portion relatively move away from each other along a disengagement direction, the battery unit moves along a detachment direction from the first position to the second position at which the holding member engages with the second engaging portion, and the second engaging portion is allowed to move to disengage from the holding member, so that the battery unit moves again along the detachment direction to be removed from the battery holding unit.
    Type: Application
    Filed: March 3, 2020
    Publication date: April 29, 2021
    Inventors: Chia-Hung LIU, Chien-Hung CHEN
  • Publication number: 20210098636
    Abstract: A semiconductor package is provided. The semiconductor package includes a heat dissipation substrate including a first conductive through-via embedded therein; a sensor die disposed on the heat dissipation substrate; an insulating encapsulant laterally encapsulating the sensor die; a second conductive through-via penetrating through the insulating encapsulant; and a first redistribution structure and a second redistribution structure disposed on opposite sides of the heat dissipation substrate. The second conductive through-via is in contact with the first conductive through-via. The sensor die is located between the second redistribution structure and the heat dissipation substrate. The second redistribution structure has a window allowing a sensing region of the sensor die receiving light. The first redistribution structure is electrically connected to the sensor die through the first conductive through-via, the second conductive through-via and the second redistribution structure.
    Type: Application
    Filed: January 20, 2020
    Publication date: April 1, 2021
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Hsuan Tai, Hao-Yi Tsai, Yu-Chih Huang, Chih-Hao Chang, Chia-Hung Liu, Ban-Li Wu, Ying-Cheng Tseng, Po-Chun Lin
  • Patent number: 10937610
    Abstract: A keyboard includes a plurality of keyswitch structures and an adjusting plate movably disposed under the keyswitch structures. Each of the keyswitch structures includes a tactile feedback member. The adjusting plate includes a plate body and a plurality of adjusting bars protruding from the plate body toward the keyswitch structures and respectively corresponding to the tactile feedback members of the keyswitch structures. When the adjusting plate moves relative to the keyswitch structures, the adjusting bars drive the tactile feedback members to change tactile feedback of the keyswitch structures.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: March 2, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Yung-Chih Wang, Chia-Hung Liu, Yu-Chun Hsieh, Chen Yang, Chih-Yao Chi
  • Patent number: 10930451
    Abstract: A keyswitch structure includes a base having a positioning means, an cover combined with the base, a plunger with an cam portion movably coupling with the cover relative to the base, a restoring unit disposed between the base and the plunger to provide a restoring force to enable the plunger to move along a direction away from the base, a tactile feedback member having a positioning portion positioned by the positioning means and an extending arm extending across a moving path of the cam portion, and an adjusting unit being movable to drive the positioning portion to shift, so that the tactile feedback member has a first deformation or a second deformation, and a pressing force required for the cam portion to pass the extending arm when the plunger moves toward the base is changed.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: February 23, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Yung-Chih Wang, Chia-Hung Liu, Yu-Chun Hsieh, Chen Yang
  • Publication number: 20200410198
    Abstract: A fingerprint sensor includes a die, a plurality of conductive structures, an encapsulant, a plurality of conductive patterns, a first dielectric layer, a second dielectric layer, and a redistribution structure. The die has an active surface and a rear surface opposite to the active surface. The conductive structures surround the die. The encapsulant encapsulates the die and the conductive structures. The conductive patterns are over the die and are electrically connected to the die and the conductive structures. Top surfaces of the conductive patterns are flat. The first dielectric layer is over the die and the encapsulant. A top surface of the first dielectric layer is coplanar with top surfaces of the conductive patterns. The second dielectric layer covers the first dielectric layer and the conductive patterns. The redistribution structure is over the rear surface of the die.
    Type: Application
    Filed: September 10, 2020
    Publication date: December 31, 2020
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chih-Hsuan Tai, Chih-Hua Chen, Hao-Yi Tsai, Yu-Chih Huang, Chia-Hung Liu, Ting-Ting Kuo, Ying-Cheng Tseng
  • Patent number: 10866640
    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: Grant
    Filed: September 13, 2018
    Date of Patent: December 15, 2020
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Chen Yang, Chia-Hung Liu, Yung-Chih Wang, Yu-Chun Hsieh
  • Publication number: 20200381362
    Abstract: A semiconductor package includes a first wafer, a second wafer, and an interconnect. The first wafer includes a first die, a first encapsulating material encapsulating the first die, and a first redistribution structure disposed over the first die and the first encapsulating material. The second wafer includes a second die, a second encapsulating material encapsulating the second die, and a second redistribution structure disposed over the second die and the second encapsulating material, wherein the second redistribution structure faces the first redistribution structure. The interconnect is disposed between the first wafer and the second wafer and electrically connecting the first redistribution structure and the second redistribution structure, wherein the interconnect includes a substrate and a plurality of through vias extending through the substrate for connecting the first redistribution structure and the second redistribution structure.
    Type: Application
    Filed: May 30, 2019
    Publication date: December 3, 2020
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ying-Cheng Tseng, Hao-Yi Tsai, Tin-Hao Kuo, Chia-Hung Liu, Chi-Hui Lai
  • Patent number: 10795447
    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: Grant
    Filed: December 10, 2019
    Date of Patent: October 6, 2020
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Chen Yang, Chia-Hung Liu, Yung-Chih Wang, Yu-Chun Hsieh
  • Publication number: 20200294912
    Abstract: A package structure includes a die, a TIV, a first encapsulant, a RDL structure, a thermal dissipation structure and a second encapsulant. The die has a first surface and a second surface opposite to each other. The TIV is laterally aside the die. The first encapsulant encapsulates sidewalls of the die and sidewalls of the TIV. The RDL structure is disposed on the first surface of the die and on the first encapsulant, electrically connected to the die and the TIV. The thermal dissipation structure is disposed over the second surface of die and electrically connected to the die through the TIV and the RDL structure. The second encapsulant encapsulates sidewalls of the thermal dissipation structure.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 17, 2020
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Hsuan Tai, Hao-Yi Tsai, Tsung-Hsien Chiang, Yu-Chih Huang, Chia-Hung Liu, Ban-Li Wu, Ying-Cheng Tseng, Po-Chun Lin
  • Patent number: 10764551
    Abstract: A method for configuring image-recording settings includes receiving an image source, determining whether the image source is the high dynamic range (HDR) image. If a HDR image source is received, a step is performed for determining whether a recording device supports recording an image with a HDR format, and a step is performed for adding a HDR recording option if the recording device supports recording the image with the HDR format.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: September 1, 2020
    Assignee: AVERMEDIA TECHNOLOGIES, INC.
    Inventors: Hsiang-Yi Ma, Pin-Feng Chiu, Nian-Ying Tsai, Po-Yang Yao, Chia-Hung Liu
  • Patent number: 10762319
    Abstract: A fingerprint sensor includes a die, a plurality of conductive structures, an encapsulant, a plurality of conductive patterns, a first dielectric layer, a second dielectric layer, and a redistribution structure. The die has an active surface and a rear surface opposite to the active surface. The conductive structures surround the die. The encapsulant encapsulates the die and the conductive structures. The conductive patterns are over the die and are electrically connected to the die and the conductive structures. Top surfaces of the conductive patterns are flat. The first dielectric layer is over the die and the encapsulant. A top surface of the first dielectric layer is coplanar with top surfaces of the conductive patterns. The second dielectric layer covers the first dielectric layer and the conductive patterns. The redistribution structure is over the rear surface of the die.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: September 1, 2020
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Hsuan Tai, Chih-Hua Chen, Hao-Yi Tsai, Yu-Chih Huang, Chia-Hung Liu, Ting-Ting Kuo, Ying-Cheng Tseng
  • Publication number: 20200244261
    Abstract: A keyswitch includes a circuit board, a bottom board abutting against the circuit board, a cap, a light receiver and a light emitter disposed on the circuit board and opposite to each other, a base disposed on the circuit board, a cover disposed on the base, a first elastic member disposed through the cover and the base, a support device, and a second elastic member fixed to the base and having a flexible rod. The support device is movably connected to the cap and bottom board and has a sheet structure. When the cap is pressed, the sheet structure blocks light transmission between the light emitter and the light receiver to generate a triggering signal. When the cap is pressed to make the flexible rod deform downward with the sheet structure and then cross the sheet structure, the flexible rod is released to collide with the cover to make sound.
    Type: Application
    Filed: January 20, 2020
    Publication date: July 30, 2020
    Inventors: Yu-Chun Hsieh, Chen Yang, Chia-Hung Liu