Patents by Inventor Chun-Jung Chang

Chun-Jung Chang 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: 11991859
    Abstract: An apparatus may include a heat pipe with a first portion residing in a first plane, a second portion residing in the first plane and a third portion positioned between the first portion and the second portion, the third portion residing in a second plane spaced-apart from the first plane. The apparatus further includes a base plate including an opening and a clip plate having a first region, a second region and a third region positioned between the first and the second regions. The third portion of the heat pipe is positioned within the opening, and the clip plate is coupled to the base plate such that i) the third region of the clip plate is in superimposition with the third portion of the heat pipe and ii) third region of the clip plate resides in the first plane.
    Type: Grant
    Filed: July 13, 2022
    Date of Patent: May 21, 2024
    Assignee: Dell Products L.P.
    Inventors: Chin-Chung Wu, Chun-Han Lin, Che-Jung Chang, Yueh Ching Lu
  • Patent number: 11988559
    Abstract: A color calibrator includes a first casing, a second casing and an optical sensor. The first casing has an accommodating recess and a plurality of first positioning members, wherein the first positioning members are arranged along an axial direction of the accommodating recess. The second casing is telescopically disposed in the accommodating recess. The second casing has a second positioning member. One of the first positioning member and the second positioning member is a magnet. Another one of the first positioning member and the second positioning member is a magnet or a magnetic induction material. The second positioning member cooperates with one of the first positioning members to position the second casing at one of a plurality of telescopic positions with respect to the first casing. The optical sensor is disposed on the second casing.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: May 21, 2024
    Assignee: Qisda Corporation
    Inventors: Chun-Jung Chen, Yung-Yeh Chang
  • Publication number: 20240162313
    Abstract: A method for forming a high electron mobility transistor is disclosed. A mesa structure having a channel layer and a barrier layer is formed on a substrate. The mesa structure has two first edges extending along a first direction and two second edges extending along a second direction. A passivation layer is formed on the substrate and the mesa structure. A first opening and a plurality of second openings connected to a bottom surface of the first opening are formed and through the passivation layer, the barrier layer and a portion of the channel layer. In a top view, the first opening exposes the two first edges of the mesa structure without exposing the two second edges of the mesa structure. A metal layer is formed in the first opening and the second openings thereby forming a contact structure.
    Type: Application
    Filed: January 18, 2024
    Publication date: May 16, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Chih-Tung Yeh, Chun-Liang Hou, Wen-Jung Liao, Chun-Ming Chang, Yi-Shan Hsu, Ruey-Chyr Lee
  • Publication number: 20240136423
    Abstract: A method for fabricating high electron mobility transistor (HEMT) includes the steps of: forming a buffer layer on a substrate; forming a first barrier layer on the buffer layer; forming a first hard mask on the first barrier layer; removing the first hard mask and the first barrier layer to form a recess; forming a second barrier layer in the recess; and forming a p-type semiconductor layer on the second barrier layer.
    Type: Application
    Filed: December 25, 2023
    Publication date: April 25, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Chun-Ming Chang, Che-Hung Huang, Wen-Jung Liao, Chun-Liang Hou
  • Publication number: 20240128353
    Abstract: A method for fabricating high electron mobility transistor (HEMT) includes the steps of: forming a buffer layer on a substrate; forming a first barrier layer on the buffer layer; forming a first hard mask on the first barrier layer; removing the first hard mask and the first barrier layer to form a recess; forming a second barrier layer in the recess; and forming a p-type semiconductor layer on the second barrier layer.
    Type: Application
    Filed: December 25, 2023
    Publication date: April 18, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Chun-Ming Chang, Che-Hung Huang, Wen-Jung Liao, Chun-Liang Hou
  • Patent number: 11960082
    Abstract: An object detection method is suitable for a virtual reality system. The object detection method includes a plurality of first cameras of a head-mounted display (HMD) to capture a plurality of first frames. A plurality of second frames are captured through a plurality of second cameras in a tracker, wherein, the object detector searches for the object position in the first frames and the second frames.
    Type: Grant
    Filed: July 13, 2022
    Date of Patent: April 16, 2024
    Assignee: HTC CORPORATION
    Inventors: Jyun-Jhong Lin, Chun-Kai Huang, Heng-Li Hsieh, Yun-Jung Chang
  • Patent number: 11956929
    Abstract: A server device includes a casing, an electronic assembly, a cover, and a heat dissipation device. The electronic assembly includes a circuit board and at least one heat source. The circuit board is disposed on the casing, and the heat source is disposed on the circuit board. The cover is removably disposed on the casing. The heat dissipation device includes at least one air cooling heat exchanger and at least one liquid cooling heat exchanger. The air cooling heat exchanger is fixed on and thermally coupled with the heat source. The liquid cooling heat exchanger is fixed on the cover and thermally coupled with the air cooling heat exchanger.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: April 9, 2024
    Assignees: INVENTEC (PUDONG) TECHNOLOGY CORPORATION, INVENTEC CORPORATION
    Inventors: Chun-Ming Chang, Tai-Jung Sung
  • Patent number: 11935947
    Abstract: An enhancement mode high electron mobility transistor (HEMT) includes a group III-V semiconductor body, a group III-V barrier layer and a gate structure. The group III-V barrier layer is disposed on the group III-V semiconductor body, and the gate structure is a stacked structure disposed on the group III-V barrier layer. The gate structure includes a gate dielectric and a group III-V gate layer disposed on the gate dielectric, and the thickness of the gate dielectric is between 15 nm to 25 nm.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: March 19, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Chih-Tung Yeh, Chun-Ming Chang, Bo-Rong Chen, Shin-Chuan Huang, Wen-Jung Liao, Chun-Liang Hou
  • Patent number: 10124405
    Abstract: A manufacturing method for a metallic housing of an electronic device is provided. The method includes providing a die-casting mold including a male die and a female die; positioning an outer frame in a cavity of the female die, the outer frame including a plurality of latching portions protruding from an inner surface inwardly and a plurality of latching grooves, each latching portion including at least one receiving groove; assembling the male die to the female die; casting pressured molten metal-alloy into the cavity to form an inner structural member embedded in the outer frame, the inner structural member including a plurality of engaging portions respectively embedded in the plurality of receiving grooves, and a plurality of matching portions respectively embedded in the plurality of latching grooves; dissembling the male die from the female die; and removing the outer frame and the inner structural member from the female die.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: November 13, 2018
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Cai-Hua Wang, Yue-Jian Li, Chen-Shen Lin, Wen-Hsiung Chang, Chun-Jung Chang
  • Patent number: 10040120
    Abstract: A manufacturing method for a metallic housing of an electronic device is provided. The method includes providing a die-casting mold, including a male die and a female die engaging with the male die, the male die defining a pouring gate therein, and the female die defining a cavity therein corresponding to the pouring gate; positioning a metallic outer case in the cavity of the female die as an insert; assembling the male die to the female die to cover the cavity, thereby communicating the pouring gate with the cavity; casting pressured molten metal-alloy into the cavity via the pouring gate to form an inner structural member embedded in an inner side of the outer case; dissembling the male die from the female die to expose the cavity, and removing the outer case and the inner structural member from the female die.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: August 7, 2018
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Cai-Hua Wang, Yue-Jian Li, Chen-Shen Lin, Wen-Hsiung Chang, Chun-Jung Chang
  • Publication number: 20180141114
    Abstract: A metallic article can include a cast metallic body and at least one metallic element. The cast metallic body defines at least one first space. The least one metallic element is received in the cast metallic body and seamless with the cast metallic body. The at least one metallic element is exposed from the at least one first space. A heat conductivity of the cast metallic body is lower than that of the at least one metallic element. The present disclosure further provides a method for manufacturing metallic article.
    Type: Application
    Filed: January 11, 2018
    Publication date: May 24, 2018
    Inventors: JUN-JUN YANG, CAI-HUA WANG, YUE-JIAN LI, CHEN-SHEN LIN, WEN-HSIUNG CHANG, CHUN-JUNG CHANG
  • Patent number: 9901979
    Abstract: A metallic article can include a cast metallic body and at least one metallic element. The cast metallic body defines at least one first space. The least one metallic element is received in the cast metallic body and seamless with the cast metallic body. The at least one metallic element is exposed from the at least one first space. A heat conductivity of the cast metallic body is lower than that of the at least one metallic element. The present disclosure further provides a method for manufacturing metallic article.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: February 27, 2018
    Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Jun-Jun Yang, Cai-Hua Wang, Yue-Jian Li, Chen-Shen Lin, Wen-Hsiung Chang, Chun-Jung Chang
  • Publication number: 20160309903
    Abstract: A folding stool includes a pair of table surface sections, a pair of leg sections, and a pivot member. The pair of table surface sections is connected to each other by the pivot member, and the pair of leg sections supports the pair of table surface sections. Each leg section includes a bottom and a top, and the top resists against the table surface section. The folding stool is made of aluminum and magnesium alloy, further includes a plurality of first connecting members and a plurality of second connecting members. Each table surface section includes a first connecting hole and a second connecting hole, and each leg section includes a third connecting hole and a fourth connecting hole. The first connecting member is connected between first connecting hole and the third connecting hole, and the second connecting member is connected between second connecting hole and the fourth connecting hole.
    Type: Application
    Filed: May 19, 2015
    Publication date: October 27, 2016
    Inventors: BO HUANG, JUN-XIAO LIU, HONG-ZHAO QI, CAI-HUA WANG, YUE-JIAN LI, CHEN-SHEN LIN, WEN-HSIUNG CHANG, CHUN-JUNG CHANG
  • Publication number: 20160263650
    Abstract: A manufacturing method for a metallic housing of an electronic device is provided. The method includes providing a die-casting mold including a male die and a female die; positioning an outer frame in a cavity of the female die, the outer frame including a plurality of latching portions protruding from an inner surface inwardly and a plurality of latching grooves, each latching portion including at least one receiving groove; assembling the male die to the female die; casting pressured molten metal-alloy into the cavity to form an inner structural member embedded in the outer frame, the inner structural member including a plurality of engaging portions respectively embedded in the plurality of receiving grooves, and a plurality of matching portions respectively embedded in the plurality of latching grooves; dissembling the male die from the female die; and removing the outer frame and the inner structural member from the female die.
    Type: Application
    Filed: May 23, 2016
    Publication date: September 15, 2016
    Inventors: CAI-HUA WANG, YUE-JIAN LI, CHEN-SHEN LIN, WEN-HSIUNG CHANG, CHUN-JUNG CHANG
  • Publication number: 20160207104
    Abstract: A manufacturing method for a metallic housing of an electronic device is provided. The method includes providing a die-casting mold, including a male die and a female die engaging with the male die, the male die defining a pouring gate therein, and the female die defining a cavity therein corresponding to the pouring gate; positioning a metallic outer case in the cavity of the female die as an insert; assembling the male die to the female die to cover the cavity, thereby communicating the pouring gate with the cavity; casting pressured molten metal-alloy into the cavity via the pouring gate to form an inner structural member embedded in an inner side of the outer case; dissembling the male die from the female die to expose the cavity, and removing the outer case and the inner structural member from the female die.
    Type: Application
    Filed: March 29, 2016
    Publication date: July 21, 2016
    Inventors: CAI-HUA WANG, YUE-JIAN LI, CHEN-SHEN LIN, WEN-HSIUNG CHANG, CHUN-JUNG CHANG
  • Patent number: 9370823
    Abstract: A metallic housing of an electronic device, includes a metallic outer frame and an inner structural member. The metallic outer frame comprises a plurality of latching portions protruding, and a plurality of latching grooves. The inner structural member is made from metal-alloy and embedded in the outer frame by die-casting. The inner structural member comprises a peripheral sidewall, a plurality of engaging portions, and a plurality of matching portions. The plurality of engaging portions and the plurality of matching portions protrude from the peripheral sidewall outwardly. Each latching portion comprises at least two parallel latching ribs, and forms a receiving groove between two adjacent latching ribs. The plurality of engaging portions is respectively embedded in the plurality of receiving grooves, and the plurality of matching portions is respectively embedded in the plurality of latching grooves. The present disclosure further provides a manufacturing method for the metallic housing.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: June 21, 2016
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Cai-Hua Wang, Yue-Jian Li, Chen-Shen Lin, Wen-Hsiung Chang, Chun-Jung Chang
  • Patent number: 9358606
    Abstract: A metallic housing of an electronic device includes a metallic outer case and an inner structural member embedded in the inner side of the outer case by die-casting. The outer case includes a bottom plate and a peripheral sidewall. The bottom plate is equipped with a number of latching hooks. The latching hooks are spaced from each other. The peripheral sidewall defines a receiving groove at an inner side along the peripheral sidewall. The inner structural member is made of metal alloy, and includes a base plate and a frame sidewall surrounding a periphery of the base plate, a protruding flange protruding from the frame sidewall, and a plurality of combining grooves on the base plate. The protruding flange is received in the receiving grooves, and the number of latching hooks is respectively received in the number of combining grooves.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: June 7, 2016
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Cai-Hua Wang, Yue-Jian Li, Chen-Shen Lin, Wen-Hsiung Chang, Chun-Jung Chang
  • Publication number: 20150306661
    Abstract: A metallic article can include a cast metallic body and at least one metallic element. The cast metallic body defines at least one first space. The least one metallic element is received in the cast metallic body and seamless with the cast metallic body. The at least one metallic element is exposed from the at least one first space. A heat conductivity of the cast metallic body is lower than that of the at least one metallic element. The present disclosure further provides a method for manufacturing metallic article.
    Type: Application
    Filed: April 21, 2015
    Publication date: October 29, 2015
    Inventors: JUN-JUN YANG, CAI-HUA WANG, YUE-JIAN LI, CHEN-SHEN LIN, WEN-HSIUNG CHANG, CHUN-JUNG CHANG
  • Patent number: 9112090
    Abstract: A method of an embodiment comprises forming a dielectric layer on a first side of an image sensor substrate, and exposing the dielectric layer to ultraviolet (UV) radiation. The image sensor substrate comprises a photo diode. A structure of an embodiment comprises a substrate and a charge-less dielectric. The substrate comprises a photo diode. The charge-less dielectric layer is on a first side of the substrate, and a total charge of the charge-less dielectric results in an average voltage drop of less than 0.2 V across the charge-less dielectric layer.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: August 18, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chung-Ren Sun, Shiu-Ko JangJian, Chun-Jung Chang, Tong-Her Sher
  • Publication number: 20150021064
    Abstract: A metallic housing of an electronic device, includes a metallic outer frame and an inner structural member. The metallic outer frame comprises a plurality of latching portions protruding, and a plurality of latching grooves. The inner structural member is made from metal-alloy and embedded in the outer frame by die-casting. The inner structural member comprises a peripheral sidewall, a plurality of engaging portions, and a plurality of matching portions. The plurality of engaging portions and the plurality of matching portions protrude from the peripheral sidewall outwardly. Each latching portion comprises at least two parallel latching ribs, and forms a receiving groove between two adjacent latching ribs. The plurality of engaging portions is respectively embedded in the plurality of receiving grooves, and the plurality of matching portions is respectively embedded in the plurality of latching grooves. The present disclosure further provides a manufacturing method for the metallic housing.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 22, 2015
    Applicants: FOXCONN TECHNOLOGY CO., LTD., FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD.
    Inventors: CAI-HUA WANG, YUE-JIAN LI, CHEN-SHEN LIN, WEN-HSIUNG CHANG, CHUN-JUNG CHANG