Patents by Inventor Wei-Lun Hsieh

Wei-Lun Hsieh 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: 20230070905
    Abstract: A SIMO power converter includes: a power stage having an inductor and a plurality of switches, the power stage generating a plurality of output voltages from an input voltage; a control circuit, the control circuit controlling the SIMO power converter to be operated at either an OPDC (Ordered Power Distributive Control) mode or a Peak Current Control (PCC) mode according with different loading conditions, the control circuit further generating a plurality of duty cycles based on an inductor current of the inductor and the plurality of output voltages; and a logic control and gate driver for generating a plurality of switch control signals based on the duty cycles from the control circuit, the plurality of switch control signals for controlling the plurality of switches of the power stage.
    Type: Application
    Filed: September 3, 2021
    Publication date: March 9, 2023
    Inventors: Wen-Chia PI, Wei-Lun HSIEH, Wei-Hsin WEI
  • Publication number: 20220064372
    Abstract: A polycarbonate polyol is provided. The polycarbonate polyol comprises a repeating unit represented by the following formula (I) and terminal hydroxyls: in formula (I), R is a substituted or unsubstituted C2-C20 divalent aliphatic hydrocarbyl, wherein the 1H-NMR spectrum of the polycarbonate polyol has an integral value A of signals from 4.00 ppm to 4.50 ppm and an integral value D of signals from 0.90 ppm to 1.10 ppm, the ratio of D to A (D/A) ranges from 0.03 to 1.45, and the 1H-NMR spectrum is measured by using deuterated chloroform as a solvent and tetramethylsilane as a reference substance.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Wei-Lun HSIEH, Hsing-Yun WANG
  • Patent number: 10875961
    Abstract: A polycarbonate diol is provided, including three kinds of repeating diol units, wherein one of the repeating diol units is chosen from an alkoxylated diol monomer.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: December 29, 2020
    Assignee: Dairen Chemical Corporation
    Inventors: Fu-Shen Lin, June-Yen Chou, Hsing-Yun Wang, Chih-Jung Chen, Wei-Lun Hsieh
  • Patent number: 10622900
    Abstract: Architecture and design techniques for a single inductor multiple-output (SIMO) DC-DC converter are presented. The SIMO DC-DC converter is based on ordered-power-distributive-control (OPDC) scheme with several novel control mechanism to optimize the performance of the power delivery capability, conversion efficiency and voltage ripple. In addition to buck mode outputs, the new SIMO DC-DC converter can also have an output channel operating at auto-buck-boost mode for the input voltage varying with the usage time.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: April 14, 2020
    Assignee: BravoTek Electronics Co., Ltd.
    Inventors: Wei-Hsin Wei, Yi-Cheng Hsu, Wei-Lun Hsieh
  • Publication number: 20190276595
    Abstract: A polycarbonate diol is provided, including three kinds of repeating diol units, wherein one of the repeating diol units is chosen from an alkoxylated diol monomer.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 12, 2019
    Inventors: Fu-Shen Lin, June-Yen Chou, Hsing-Yun Wang, Chih-Jung Chen, Wei-Lun Hsieh
  • Patent number: 10344123
    Abstract: A polycarbonate diol is provided, including three kinds of repeating diol units, wherein one of the repeating diol units is chosen from an alkoxylated diol monomer.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: July 9, 2019
    Assignee: Dairen Chemical Corporation
    Inventors: Fu-Shen Lin, June-Yen Chou, Hsing-Yun Wang, Chih-Jung Chen, Wei-Lun Hsieh
  • Patent number: 10291126
    Abstract: A single inductor multiple-output DC-DC converter includes an inductor coupled to a first input switch and a second input switch to store energy from supply source, wherein the first input switch is coupled to an input supply node, and the second input switch is coupled to ground, the first and the second switches controlling current through the inductor; a plurality of output switches, each output switch coupled to a common inductor node and to a corresponding output supply node, each of the output supply node having a voltage converted from an input voltage received at an input supply node; a freewheel switch coupled between the common inductor node and ground; a control circuit receiving a sensed inductor current and a plurality of feedback signals indicating error signals between output voltages and their corresponding reference voltages, the control circuit being configured to control timing and charging current of the inductor.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: May 14, 2019
    Assignee: BravoTek Electronics Co., Ltd.
    Inventors: Wei-Hsin Wei, Yi-Cheng Hsu, Wei-Lun Hsieh
  • Patent number: 9837366
    Abstract: A semiconductor structure has a semiconductor device, a first seal ring, and a second seal ring. The semiconductor device has a first surface and a second surface opposite to the first surface. The first seal ring is disposed on the first surface of the semiconductor device and adjacent to edges of the first surface. The second seal ring is disposed on the second surface of the semiconductor device and adjacent to edges of the second surface. A semiconductor manufacturing process is also provided.
    Type: Grant
    Filed: December 25, 2016
    Date of Patent: December 5, 2017
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chen-Hsun Liu, Chin-Yu Ku, Rung-De Wang, Wei-Lun Hsieh, Chia-Hua Wang, Jheng-Hong Chen, Pei-Shing Tsai
  • Publication number: 20170051104
    Abstract: A polycarbonate diol is provided, including three kinds of repeating diol units, wherein one of the repeating diol units is chosen from an alkoxylated diol monomer.
    Type: Application
    Filed: August 17, 2016
    Publication date: February 23, 2017
    Applicant: Dairen Chemical Corporation
    Inventors: Fu-Shen Lin, June-Yen Chou, Hsing-Yun Wang, Chih-Jung Chen, Wei-Lun Hsieh
  • Patent number: 8846548
    Abstract: A method includes forming a polymer layer over a passivation layer, wherein the passivation layer further comprises a portion over a metal pad. The polymer layer is patterned to form an opening in the polymer layer, wherein exposed surfaces of the polymer layer have a first roughness. A surface treatment is performed to increase a roughness of the polymer layer to a second roughness greater than the first roughness. A metallic feature is formed over the exposed surface of the polymer layer.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: September 30, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chia-Wei Tu, Yian-Liang Kuo, Wei-Lun Hsieh, Tsung-Fu Tsai
  • Patent number: 8836383
    Abstract: The present invention discloses a multipurpose half bridge signal output circuit. The multipurpose half bridge signal output circuit is capable of selectively operating under a charge sharing mode or a gate pulsing modulation mode. The multipurpose half bridge signal output circuit includes: a first output pin; a second output pin; a first circuit zone having a first common end coupled to the first output pin; and a second circuit zone having a second common end coupled to the second output pin.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: September 16, 2014
    Assignee: Richtek Technology Corporation
    Inventors: Wei-Lun Hsieh, Hung-Sung Chu, Chung-Hsien Tso
  • Publication number: 20140070870
    Abstract: The present invention discloses a multipurpose half bridge signal output circuit. The multipurpose half bridge signal output circuit is capable of selectively operating under a charge sharing mode or a gate pulsing modulation mode. The multipurpose half bridge signal output circuit includes: a first output pin; a second output pin; a first circuit zone having a first common end coupled to the first output pin; and a second circuit zone having a second common end coupled to the second output pin.
    Type: Application
    Filed: August 23, 2013
    Publication date: March 13, 2014
    Applicant: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Wei-Lun Hsieh, Hung-Sung Chu, Chung-Hsien Tso
  • Patent number: 8643993
    Abstract: The present invention discloses a short-circuit detection circuit and a short-circuit detection method. The short-circuit detection circuit detects whether an output node is short-circuited to a first predetermined level. A first switch circuit which is controlled by a control signal is coupled between the output node and a second predetermined level. The short-circuit detection circuit includes: a determination circuit, which is coupled between the output node and the second predetermined level, wherein when the determination circuit is enabled, it generates a determination signal according to whether the output node is short-circuited to the first predetermined level; and a second switch circuit, which generates a short-circuit detection signal according to the determination signal.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: February 4, 2014
    Assignee: Richtek Technology Corporation, R.O.C.
    Inventors: Kuo-Chen Tsai, Wei-Lun Hsieh, Tung-Han Tsai, Ming-Jun Hsiao
  • Publication number: 20130128395
    Abstract: The present invention discloses a short-circuit detection circuit and a short-circuit detection method. The short-circuit detection circuit detects whether an output node is short-circuited to a first predetermined level. A first switch circuit which is controlled by a control signal is coupled between the output node and a second predetermined level. The short-circuit detection circuit includes: a determination circuit, which is coupled between the output node and the second predetermined level, wherein when the determination circuit is enabled, it generates a determination signal according to whether the output node is short-circuited to the first predetermined level; and a second switch circuit, which generates a short-circuit detection signal according to the determination signal.
    Type: Application
    Filed: February 10, 2012
    Publication date: May 23, 2013
    Inventors: Kuo-Chen Tsai, Wei-Lun Hsieh, Tung-Han Tsai, Ming-Jun Hsiao
  • Patent number: 8193853
    Abstract: For a charge pump, a control circuit switches two or more input voltages to apply to one or more pumping capacitors under auto-sensing control to modulate a maximum pumping voltage as close as to a demanded output voltage to thereby reduce the difference between the maximum pumping voltage and the output voltage for efficiency and thermal improvement of the charge pump. The maximum pumping voltage is produced by mixing the different input voltages and the charge pump may provide more operation modes.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: June 5, 2012
    Assignee: Richtek Technology Corp.
    Inventors: Wei-Lun Hsieh, Hung-Sung Chu, Der-Jiunn Wang, Kuo-Chen Tsai, Wei-Hsin Wei
  • Publication number: 20100321099
    Abstract: For a charge pump, a control circuit switches two or more input voltages to apply to one or more pumping capacitors under auto-sensing control to modulate a maximum pumping voltage as close as to a demanded output voltage to thereby reduce the difference between the maximum pumping voltage and the output voltage for efficiency and thermal improvement of the charge pump. The maximum pumping voltage is produced by mixing the different input voltages and the charge pump may provide more operation modes.
    Type: Application
    Filed: June 16, 2010
    Publication date: December 23, 2010
    Applicant: RICHTEK TECHNOLOGY CORP.
    Inventors: WEI-LUN HSIEH, HUNG-SUNG CHU, DER-JIUNN WANG, KUO-CHEN TSAI, WEI-HSIN WEI