Patents by Inventor Li-Chih Fang

Li-Chih Fang 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: 10950557
    Abstract: A manufacturing method of a stacked chip package structure includes the following steps. A first chip is disposed on a carrier, wherein the first chip has a first active surface and a plurality of first pads disposed on the first active surface. A second chip is disposed on the first chip without covering the first pads and has a second active surface and a plurality of second pads disposed on the second active surface. A plurality of first stud bumps are formed on the first pads. A plurality of pillar bumps are formed on the second pads. The first chip and the second chip are encapsulated by an encapsulant, wherein the encapsulant exposes a top surface of each second stud bump. A plurality of first vias are formed by a laser process, wherein the first vias penetrate the encapsulant and expose the first stud bumps. A conductive layer is formed in the first vias to form a plurality of first conductive vias. The carrier is removed.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 16, 2021
    Assignee: Powertech Technology Inc.
    Inventors: Li-Chih Fang, Ji-Cheng Lin, Che-Min Chu, Chun-Te Lin, Chien-Wen Huang
  • Patent number: 10840200
    Abstract: A manufacturing method of a chip package structure includes: dicing a wafer to separate chips formed thereon; mounting the chips on a carrier, wherein an active surface and pads of each chip are buried in an adhesive layer disposed on the carrier, and a top surface of the adhesive layer between the chips is bulged away from the carrier; forming an encapsulant to encapsulate the chips and cover the adhesive layer, wherein the encapsulant has a concave surface covering the top surface of the adhesive layer and a back surface opposite to the concave surface; removing the carrier and the adhesive layer; forming a first dielectric layer to cover the concave surface and the active surface; forming a patterned circuit layer on the first dielectric layer, to electrically connect to the pads through openings in the first dielectric layer; and forming a second dielectric layer on the patterned circuit layer.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: November 17, 2020
    Assignee: Powertech Technology Inc.
    Inventors: Li-Chih Fang, Hung-Hsin Hsu, Nan-Chun Lin, Shang-Yu Chang Chien
  • Publication number: 20200357770
    Abstract: A semiconductor package and a manufacturing method thereof are provided. The semiconductor package includes a top semiconductor die, a bottom semiconductor die, a first encapsulant, a second encapsulant, a third encapsulant, a first redistribution layer and a second redistribution layer. The top semiconductor die is stacked on the bottom semiconductor die. The bottom semiconductor die is laterally encapsulated by the third encapsulant, and the third encapsulant is laterally surrounded by the first encapsulant. The top semiconductor die is laterally encapsulated by the second encapsulant. The first redistribution layer is disposed between the top and bottom semiconductor dies. The bottom semiconductor die, the first encapsulant and the third encapsulant are located between the first and second redistribution layers.
    Type: Application
    Filed: May 8, 2019
    Publication date: November 12, 2020
    Applicant: Powertech Technology Inc.
    Inventors: Chia-Wei Chiang, Li-Chih Fang, Wen-Jeng Fan
  • Publication number: 20200243461
    Abstract: A semiconductor package and a manufacturing method thereof are provided. The semiconductor package includes a bumpless die including a plurality of conductive pads, a conductive connector disposed aside the bumpless die and electrically coupled to the bumpless die, an insulating encapsulation encapsulating the bumpless die and the conductive connector, a circuit layer electrically connected to the bumpless die and the conductive connector, and a front side redistribution layer disposed on the circuit layer and including a finer line and spacing routing than the circuit layer. The circuit layer includes a conductive pattern disposed on the insulating encapsulation and extending along a thickness direction of the bumpless die to be connected to the conductive pads of the bumpless die, and a dielectric pattern disposed on the insulating encapsulation and laterally covering the conductive pattern.
    Type: Application
    Filed: January 30, 2019
    Publication date: July 30, 2020
    Applicant: Powertech Technology Inc.
    Inventors: Chia-Wei Chiang, Li-Chih Fang, Wen-Jeng Fan
  • Publication number: 20200243449
    Abstract: A package structure includes a redistribution structure, a bridge die, a plurality of conductive pillars, at least two dies, and an insulating encapsulant. The bridge die provides an electrical connection between the at least two dies. The conductive pillars provide an electrical connection between the at least two dies and the redistribution structure. The insulating encapsulant is disposed on the redistribution structure, encapsulates the bridge die and the conductive pillars, and covers each of the at least two dies. The bridge die of the package structure may be used to route signals between the at least two dies, allowing for a higher density of interconnecting routes between the at least two dies.
    Type: Application
    Filed: January 30, 2019
    Publication date: July 30, 2020
    Applicant: Powertech Technology Inc.
    Inventors: Chia-Wei Chiang, Li-Chih Fang, Wen-Jeng Fan
  • Publication number: 20200176395
    Abstract: A manufacturing method of a stacked chip package structure includes the following steps. A first chip is disposed on a carrier, wherein the first chip has a first active surface and a plurality of first pads disposed on the first active surface. A second chip is disposed on the first chip without covering the first pads and has a second active surface and a plurality of second pads disposed on the second active surface. A plurality of first stud bumps are formed on the first pads. A plurality of pillar bumps are formed on the second pads. The first chip and the second chip are encapsulated by an encapsulant, wherein the encapsulant exposes a top surface of each second stud bump. A plurality of first vias are formed by a laser process, wherein the first vias penetrate the encapsulant and expose the first stud bumps. A conductive layer is formed in the first vias to form a plurality of first conductive vias. The carrier is removed.
    Type: Application
    Filed: February 4, 2020
    Publication date: June 4, 2020
    Applicant: Powertech Technology Inc.
    Inventors: Li-Chih Fang, Ji-Cheng Lin, Che-Min Chu, Chun-Te Lin, Chien-Wen Huang
  • Patent number: 10607860
    Abstract: A package structure including a die, a plurality of first conductive connectors, a second conductive connector electrically insulated from the die, a redistribution layer and a conductive shield is provided. The die includes an active surface, a back surface opposite the active surface, and a sidewall coupling the active surface to the back surface. The first conductive connectors are disposed on the active surface of the die and electrically connected to the die. The second conductive connector is disposed on the die and aside the first conductive connectors. The redistribution layer is disposed on the die and electrically connected to the first conductive connectors and the second conductive connector. The conductive shield coupled to the redistribution layer surrounds the second conductive connector and at least a portion of the sidewall. The die is electrically insulated to the conductive shield. A chip package structure is also provided.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: March 31, 2020
    Assignee: Powertech Technology Inc.
    Inventors: Chia-Wei Chiang, Li-Chih Fang, Ji-Cheng Lin, Che-Min Chu, Chun-Te Lin
  • Patent number: 10593629
    Abstract: A semiconductor package and a manufacturing method thereof are provided. The semiconductor package includes a conductive casing, a semiconductor die, a conductive connector, an insulating encapsulant, a redistribution structure, and a first conductive terminal. The conductive casing has a cavity. The semiconductor die is disposed in the cavity of the conductive casing. The conductive connector is disposed on a periphery of the conductive casing. The insulating encapsulant encapsulates the conductive connector, the semiconductor die and the cavity. The redistribution structure is formed on the insulating encapsulant and is electrically connected to the conductive connector and the semiconductor die. The first conductive terminal is disposed in openings of the redistribution structure and is physically in contact with a portion of the conductive casing.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: March 17, 2020
    Assignee: Powertech Technology Inc.
    Inventors: Chia-Wei Chiang, Li-Chih Fang, Wen-Jeng Fan
  • Publication number: 20200013721
    Abstract: A semiconductor package and a manufacturing method thereof are provided. The semiconductor package includes a conductive casing, a semiconductor die, a conductive connector, an insulating encapsulant, a redistribution structure, and a first conductive terminal. The conductive casing has a cavity. The semiconductor die is disposed in the cavity of the conductive casing. The conductive connector is disposed on a periphery of the conductive casing. The insulating encapsulant encapsulates the conductive connector, the semiconductor die and the cavity. The redistribution structure is formed on the insulating encapsulant and is electrically connected to the conductive connector and the semiconductor die. The first conductive terminal is disposed in openings of the redistribution structure and is physically in contact with a portion of the conductive casing.
    Type: Application
    Filed: July 9, 2018
    Publication date: January 9, 2020
    Applicant: Powertech Technology Inc.
    Inventors: Chia-Wei Chiang, Li-Chih Fang, Wen-Jeng Fan
  • Publication number: 20200006274
    Abstract: A semiconductor package includes a semiconductor die, a first redistribution structure, a conductive structure, and an insulating encapsulant. The first redistribution structure includes a dielectric protrusion. The first redistribution structure includes a die attach region and a peripheral region surrounding the die attach region. The semiconductor die is disposed on the first redistribution structure within the die attach region. The dielectric protrusion is disposed in the peripheral region and extends in a thickness direction of the semiconductor die. The conductive structure is disposed on the first redistribution structure within the in the peripheral region and encapsulates the semiconductor dielectric protrusion. The conductive structure is electrically coupled to the first redistribution structure and the semiconductor die. The insulator is disposed on the first redistribution structure and encapsulates the semiconductor die and the conductive structure.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 2, 2020
    Applicant: Powertech Technology Inc.
    Inventors: Chia-Wei Chiang, Li-Chih Fang, Wen-Jeng Fan
  • Patent number: 10431549
    Abstract: A semiconductor package including a stacked-die structure, a second encapsulant laterally encapsulating the stacked-die structure and a redistribution layer disposed on the second encapsulant and the staked-die structure is provided. The stacked-die structure includes a first semiconductor die including a first active surface, a circuit layer disposed on the first active surface, a second semiconductor die including a second active surface facing towards the first active surface, a plurality of conductive features distributed at the circuit layer and electrically connected to the first and second semiconductor die and a first encapsulant encapsulating the second semiconductor die and the conductive features. A portion of the conductive features surrounds the second semiconductor die. The redistribution layer is electrically connected to the staked-die structure. A manufacturing method of a semiconductor package is also provided.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: October 1, 2019
    Assignee: Powertech Technology Inc.
    Inventors: Chien-Wen Huang, Chia-Wei Chiang, Wen-Jeng Fan, Li-Chih Fang
  • Publication number: 20190214367
    Abstract: A stacked package has plurality of chip packages stacked on a base. Each chip package has an exterior conductive element formed on the active surface. Each exterior conductive element has a cut edge exposed on a lateral side of the chip package. The lateral trace is formed through the encapsulant and electrically connects to the cut edges of the chip packages. The base has an interconnect structure to form the electrical connection between the lateral trace and the external terminals. Therefore, the process for forming the electrical connections is simplified to enhance the reliability and the UPH for manufacturing the stacked package.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 11, 2019
    Applicant: Powertech Technology Inc.
    Inventors: Ming-Chih Chen, Hung-Hsin Hsu, Yuan-Fu Lan, Chi-An Wang, Hsien-Wen Hsu, Li-Chih Fang
  • Publication number: 20190214347
    Abstract: A semiconductor package including a stacked-die structure, a second encapsulant laterally encapsulating the stacked-die structure and a redistribution layer disposed on the second encapsulant and the staked-die structure is provided. The stacked-die structure includes a first semiconductor die including a first active surface, a circuit layer disposed on the first active surface, a second semiconductor die including a second active surface facing towards the first active surface, a plurality of conductive features distributed at the circuit layer and electrically connected to the first and second semiconductor die and a first encapsulant encapsulating the second semiconductor die and the conductive features. A portion of the conductive features surrounds the second semiconductor die. The redistribution layer is electrically connected to the staked-die structure. A manufacturing method of a semiconductor package is also provided.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 11, 2019
    Applicant: Powertech Technology Inc.
    Inventors: Chien-Wen Huang, Chia-Wei Chiang, Wen-Jeng Fan, Li-Chih Fang
  • Patent number: 10276510
    Abstract: A manufacturing method of a package structure including the following steps is provided. A plurality of first conductive connectors and a second conductive connector on an active surface of a die are formed. The first conductive connectors are electrically connected to the die. The second conductive connector is formed aside the first conductive connectors and electrically insulated to the die. A redistribution layer is formed on the die. The redistribution layer is electrically connected to the first conductive connectors and the second conductive connector. A conductive shield is formed on the redistribution layer to surround the second conductive connector and at least a portion of a sidewall of the die coupled the active surface. The die is electrically insulated from the conductive shield. Another manufacturing method of a package structure is also provided.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: April 30, 2019
    Assignee: Powertech Technology Inc.
    Inventors: Chia-Wei Chiang, Li-Chih Fang, Ji-Cheng Lin, Che-Min Chu, Chun-Te Lin
  • Publication number: 20190096821
    Abstract: A manufacturing method of a package structure including the following steps is provided. A plurality of first conductive connectors and a second conductive connector on an active surface of a die are formed. The first conductive connectors are electrically connected to the die. The second conductive connector is formed aside the first conductive connectors and electrically insulated to the die. A redistribution layer is formed on the die. The redistribution layer is electrically connected to the first conductive connectors and the second conductive connector. A conductive shield is formed on the redistribution layer to surround the second conductive connector and at least a portion of a sidewall of the die coupled the active surface. The die is electrically insulated from the conductive shield. Another manufacturing method of a package structure is also provided.
    Type: Application
    Filed: September 25, 2017
    Publication date: March 28, 2019
    Applicant: Powertech Technology Inc.
    Inventors: Chia-Wei Chiang, Li-Chih Fang, Ji-Cheng Lin, Che-Min Chu, Chun-Te Lin
  • Publication number: 20190096699
    Abstract: A package structure including a die, a plurality of first conductive connectors, a second conductive connector electrically insulated from the die, a redistribution layer and a conductive shield is provided. The die includes an active surface, a back surface opposite the active surface, and a sidewall coupling the active surface to the back surface. The first conductive connectors are disposed on the active surface of the die and electrically connected to the die. The second conductive connector is disposed on the die and aside the first conductive connectors. The redistribution layer is disposed on the die and electrically connected to the first conductive connectors and the second conductive connector. The conductive shield coupled to the redistribution layer surrounds the second conductive connector and at least a portion of the sidewall. The die is electrically insulated to the conductive shield. A chip package structure is also provided.
    Type: Application
    Filed: September 25, 2017
    Publication date: March 28, 2019
    Applicant: Powertech Technology Inc.
    Inventors: Chia-Wei Chiang, Li-Chih Fang, Ji-Cheng Lin, Che-Min Chu, Chun-Te Lin
  • Publication number: 20190051626
    Abstract: A manufacturing method of a chip package structure includes: dicing a wafer to separate chips formed thereon; mounting the chips on a carrier, wherein an active surface and pads of each chip are buried in an adhesive layer disposed on the carrier, and a top surface of the adhesive layer between the chips is bulged away from the carrier; forming an encapsulant to encapsulate the chips and cover the adhesive layer, wherein the encapsulant has a concave surface covering the top surface of the adhesive layer and a back surface opposite to the concave surface; removing the carrier and the adhesive layer; forming a first dielectric layer to cover the concave surface and the active surface; forming a patterned circuit layer on the first dielectric layer, to electrically connect to the pads through openings in the first dielectric layer; and forming a second dielectric layer on the patterned circuit layer.
    Type: Application
    Filed: October 19, 2018
    Publication date: February 14, 2019
    Applicant: Powertech Technology Inc.
    Inventors: Li-Chih Fang, Hung-Hsin Hsu, Nan-Chun Lin, Shang-Yu Chang Chien
  • Patent number: 10163834
    Abstract: A chip package structure includes a chip, an encapsulant, a dielectric layer and a patterned circuit layer. The chip includes an active surface and a plurality of pads disposed on the active surface. The encapsulant encapsulates the chip and exposes active surface, wherein the encapsulant includes a concave surface and a back surface opposite to the concave surface, the concave surface exposes the active surface and is dented toward the back surface. The dielectric layer covers the concave surface and the active surface and includes a plurality of openings exposing the pads, wherein the opening includes a slanted side surface and the angle between the slanted side surface and the active surface is an acute angle. The patterned circuit layer is disposed on the dielectric layer and electrically connected to the pads through the openings.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: December 25, 2018
    Assignee: Powertech Technology Inc.
    Inventors: Li-Chih Fang, Hung-Hsin Hsu, Nan-Chun Lin, Shang-Yu Chang Chien
  • Patent number: 9972554
    Abstract: A wafer level chip scale package (WLCSP) has a device chip, a carrier chip, an offset pad, a conductive spacing bump and a through hole via (THV). The device chip is attached to the carrier chip. The offset pad is disposed on a first surface of the device chip. The conductive spacing bump is formed on the offset pad. The through hole via includes a through hole and a hole metal layer. The through hole penetrates through the carrier chip and the device chip, and the hole metal layer is formed in the through hole and in contact with the offset pad.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: May 15, 2018
    Assignee: POWERTECH TECHNOLOGY INC.
    Inventors: Li-Chih Fang, Chia-Chang Chang, Hung-Hsin Hsu, Wen-Hsiung Chang, Kee-Wei Chung, Chia-Wen Lien
  • Publication number: 20180076158
    Abstract: A chip package structure includes a chip, an encapsulant, a dielectric layer and a patterned circuit layer. The chip includes an active surface and a plurality of pads disposed on the active surface. The encapsulant encapsulates the chip and exposes active surface, wherein the encapsulant includes a concave surface and a back surface opposite to the concave surface, the concave surface exposes the active surface and is dented toward the back surface. The dielectric layer covers the concave surface and the active surface and includes a plurality of openings exposing the pads, wherein the opening includes a slanted side surface and the angle between the slanted side surface and the active surface is an acute angle. The patterned circuit layer is disposed on the dielectric layer and electrically connected to the pads through the openings.
    Type: Application
    Filed: May 22, 2017
    Publication date: March 15, 2018
    Applicant: Powertech Technology Inc.
    Inventors: Li-Chih Fang, Hung-Hsin Hsu, Nan-Chun Lin, Shang-Yu Chang Chien