Patents by Inventor JUI-CHEN CHANG

JUI-CHEN 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: 11973302
    Abstract: The present disclosure provides a method for aligning a master oscillator power amplifier (MOPA) system. The method includes ramping up a pumping power input into a laser amplifier chain of the MOPA system until the pumping power input reaches an operational pumping power input level; adjusting a seed laser power output of a seed laser of the MOPA system until the seed laser power output is at a first level below an operational seed laser power output level; and performing a first optical alignment process to the MOPA system while the pumping power input is at the operational pumping power input level, the seed laser power output is at the first level, and the MOPA system reaches a steady operational thermal state.
    Type: Grant
    Filed: February 20, 2023
    Date of Patent: April 30, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chun-Lin Louis Chang, Henry Tong Yee Shian, Alan Tu, Han-Lung Chang, Tzung-Chi Fu, Bo-Tsun Liu, Li-Jui Chen, Po-Chung Cheng
  • Patent number: 11967652
    Abstract: A sensor package structure includes a substrate, a sensor chip and a ring-shaped solder mask frame those are disposed on the substrate, a ring-shaped support disposed on a top side of the annular solder mask frame, and a light permeable member that is disposed on the ring-shaped support. The sensor chip is electrically coupled to the substrate. A top surface of the sensor chip has a sensing region, and the sensing region is spaced apart from an outer lateral side of the sensor chip by a distance less than 300 ?m. The ring-shaped solder mask frame surrounds and contacts the outer lateral side of the sensor chip. The light permeable member, the ring-shaped support, and the sensor chip jointly define an enclosed space.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: April 23, 2024
    Assignee: TONG HSING ELECTRONIC INDUSTRIES, LTD.
    Inventors: Fu-Chou Liu, Jui-Hung Hsu, Yu-Chiang Peng, Chien-Chen Lee, Ya-Han Chang, Li-Chun Hung
  • Publication number: 20230099843
    Abstract: A collapsible reading stand contains a body, and the body includes a base connected with a holder by using two first hinges and two second hinges. The holder includes a hollow chamber, multiple receiving orifices, and two dead holes. The base has a first protrusion extending, a second protrusion, and a third protrusion defined, a first locking zone, a second locking zone, and multiple accommodation trenches of different sizes. The holder is connected with a support rack, and the support rack includes a fixing post, two reinforcement extensions, and two columns. When connecting the body, the holder is rotated upward by using the two first hinges and the two second hinges, and the support rack is rotated backward along the two columns, then the fixing post of the support rack is engaged in the first locking zone or the second locking zone, thus erecting the collapsible reading stand.
    Type: Application
    Filed: September 26, 2021
    Publication date: March 30, 2023
    Inventor: Jui-Chen CHANG
  • Patent number: 11284716
    Abstract: A reading stand contains: a body and a support pedestal. The body includes an accommodation space, a peripheral frame, multiple orifices, two central hanging orifices, a reinforcement rib, two opposite second recesses, and four shock absorbers arranged on four corners of an outer periphery of the peripheral frame respectively. The stand is hollow and is formed in a rectangle shape. The support pedestal includes two extensions arranged on two opposite long sides thereof respectively, and the support pedestal includes two non-slip parts covered on the two extensions individually. One of the two extensions of the support pedestal is engaged with the two opposite first recesses or the two opposite second recesses so as to change a readable angle of the body.
    Type: Grant
    Filed: March 17, 2019
    Date of Patent: March 29, 2022
    Inventor: Jui-Chen Chang
  • Publication number: 20200288861
    Abstract: A reading stand contains: a body and a support pedestal. The body includes an accommodation space, a peripheral frame, multiple orifices, two central hanging orifices, a reinforcement rib, two opposite second recesses, and four shock absorbers arranged on four corners of an outer periphery of the peripheral frame respectively. The stand is hollow and is formed in a rectangle shape. The support pedestal includes two extensions arranged on two opposite long sides thereof respectively, and the support pedestal includes two non-slip parts covered on the two extensions individually. One of the two extensions of the support pedestal is engaged with the two opposite first recesses or the two opposite second recesses so as to change a readable angle of the body.
    Type: Application
    Filed: March 17, 2019
    Publication date: September 17, 2020
    Inventor: Jui-Chen CHANG
  • Publication number: 20180093371
    Abstract: A stapler structure contains: a base, a stapling mechanism and a press block which are connected with a connector. The stapling mechanism includes an elastic sheet and a trigger portion accommodating a control column which has a horizontal stein. An accommodation seat connects with a rotation member and a guiding groove having a through trough, and the accommodation seat houses a locking sheet having two raised ribs, and a coupling plate is joined with the accommodation seat and has a recess. The rotation member has a hollow chamber, an elongated orifice, and multiple fixing orifices. A movable adjuster has a first protrusion and a coupling shaft configured to connect a second protrusion with the first protrusion, a first positioning post is inserted into the elongated orifice, a second compression spring is accommodated in the hollow chamber, and a C retaining ring retains with the second compression spring.
    Type: Application
    Filed: October 4, 2016
    Publication date: April 5, 2018
    Inventor: Jui-Chen CHANG
  • Patent number: 9849716
    Abstract: A hook-and-loop fastening structure for a clipboard contains: a cover and an accommodation box rotatably connecting with the cover. The accommodation box includes an accommodating chamber, a fixing slot defined on one of two inner peripheral sides of the accommodating chamber, and two opposite insertion portions, wherein each insertion portion is arranged on each of two inner ends of the accommodating chamber. Each insertion portion has a recess and a through hole defined between and communicating with a bottom of the recess and the accommodating chamber. The fixing slot of the accommodating chamber is configured to house a clamper for clamping papers/documents, and a hook-and-loop fastener is connected with the two opposite insertion portions so as to fix an object (such as a mobile device or a tablet PC) in the clipboard, after inserting the hook-and-loop fastener into the recess and the through hole.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: December 26, 2017
    Inventor: Jui-Chen Chang
  • Publication number: 20170113482
    Abstract: A hook-and-loop fastening structure for a clipboard contains: a cover and an accommodation box rotatably connecting with the cover. The accommodation box includes an accommodating chamber, a fixing slot defined on one of two inner peripheral sides of the accommodating chamber, and two opposite insertions portions, wherein each insertion portion is arranged on each of two inner ends of the accommodating chamber. Said each insertion portion has a recess and a through hole defined between and communicating with a bottom of the recess and the accommodating chamber. The fixing slot of the accommodating chamber is configured to house a clamper for clamping papers/documents, and a hook-and-loop fastener is connected with the two opposite insertions portions so as to fix an object (such as a mobile device or a tablet PC) in the clipboard, after inserting the hook-and-loop fastener into the recess and the through hole.
    Type: Application
    Filed: October 26, 2015
    Publication date: April 27, 2017
    Inventor: Jui-Chen CHANG
  • Publication number: 20160236293
    Abstract: An apparatus for metal additive manufacturing and electrical discharging is used to machine a metal powder into a rigid body, and includes an apparatus frame unit, an additive manufacturing unit, and an electrical discharge machining unit. The additive manufacturing unit includes a powder applying unit for applying a layer of the metal powder onto a processing lift table of the apparatus frame unit, and a laser unit for heating a part of the metal powder within an imaginary contour line to form the rigid body. The electrical discharge machining unit includes a powder removing member for removing a part of the metal powder proximate to the imaginary contour line, and an electrode member for machining the rigid body via electrical discharge.
    Type: Application
    Filed: February 1, 2016
    Publication date: August 18, 2016
    Inventors: Jui-Chen CHANG, Song-Neng CHENG, Shuo-Chen JIAN, Yu-Ling CHANG
  • Publication number: 20140242811
    Abstract: An ALD method includes providing a substrate in an ALD reactor, performing a pre-ALD treatment to the substrate in the ALD reactor, and performing one or more ALD cycles to form a dielectric layer on the substrate in the ALD reactor. The pre-ALD treatment includes providing a hydroxylating agent to the substrate in a first duration, and providing a precursor to the substrate in a second duration. Each of the ALD cycles includes providing the hydroxylating agent to the substrate in a third duration, and providing the precursor to the substrate in a fourth duration. The first duration is longer than the third duration.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Jui-Chen Chang, Chen-Kuo Chiang, Chin-Fu Lin, Chih-Chien Liu
  • Publication number: 20120282783
    Abstract: A method for fabricating high-k dielectric layer is disclosed. The method includes the steps of: providing a substrate; and forming a plurality of high-k dielectric layers by using a plurality of reacting gases to perform a plurality of process stages on the surface of the substrate, wherein at least one of the reacting gases comprises different flow rate in the fabrication stages.
    Type: Application
    Filed: May 3, 2011
    Publication date: November 8, 2012
    Inventors: Jui-Chen Chang, Chen-Kuo Chiang, Chin-Fu Lin, Chih-Chien Liu
  • Publication number: 20090036115
    Abstract: A method for testing GSM modules includes the following steps of: switching a power supply on; controlling the power supply to provide power to a GSM module; generating a command that establishes a connection between the GSM module and a network; transferring the command to the GSM module; signaling the GSM module to invoke the command, and acquiring test data from the GSM module; determining whether the GSM module is normal by determining whether the GSM module is connected to the network; switching the power supply off; and generating a test result.
    Type: Application
    Filed: May 21, 2008
    Publication date: February 5, 2009
    Applicant: CHI MEI COMMUNICATION SYSTEMS, INC.
    Inventor: JUI-CHEN CHANG
  • Patent number: D845392
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: April 9, 2019
    Inventor: Jui-Chen Chang