Patents by Inventor Meng-Chang Lee

Meng-Chang Lee 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: 20200343255
    Abstract: A memory device and a method for manufacturing the memory device are provided. The memory device includes a substrate, a plurality of first gate structures, a first dielectric layer, a second dielectric layer, a third dielectric layer and a contact plug. The first gate structures are formed on an array region of the substrate. The first dielectric layer is formed on top surfaces and sidewalls of the first gate structures. The second dielectric layer is formed on the first dielectric layer and in direct contact with the first dielectric layer. The second dielectric layer and the first dielectric layer are made of the same material. The third dielectric layer is formed between the first gate structures and defines a plurality of contact holes exposing the substrate. The contact plug fills the contact holes.
    Type: Application
    Filed: July 10, 2020
    Publication date: October 29, 2020
    Inventors: Shu-Ming Lee, Tzu-Ming Ou Yang, Meng-Chang Chan
  • Patent number: 10756099
    Abstract: A memory device and a method for manufacturing the memory device are provided. The memory device includes a substrate, a plurality of first gate structures, a first dielectric layer, a second dielectric layer, a third dielectric layer and a contact plug. The first gate structures are formed on an array region of the substrate. The first dielectric layer is formed on top surfaces and sidewalls of the first gate structures. The second dielectric layer is formed on the first dielectric layer and in direct contact with the first dielectric layer. The second dielectric layer and the first dielectric layer are made of the same material. The third dielectric layer is formed between the first gate structures and defines a plurality of contact holes exposing the substrate. The contact plug fills the contact holes.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: August 25, 2020
    Assignee: WINBOND ELECTRONICS CORP.
    Inventors: Shu-Ming Lee, Tzu-Ming Ou Yang, Meng-Chang Chan
  • Publication number: 20200212261
    Abstract: A light-emitting device is provided, which includes a first semiconductor structure, an active structure, a second semiconductor structure, and a first blocking layer. The first semiconductor structure has a first conductivity type. The active structure is on the first semiconductor structure. The second semiconductor structure is on the active structure and has a second conductivity type different from the first conductivity type. The first blocking layer is between the second semiconductor structure and the active structure. The first blocking layer substantially does not contain aluminum.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Inventors: Shih-Chang LEE, Meng-Yang CHEN
  • Publication number: 20200017969
    Abstract: In an embodiment, an apparatus includes: a susceptor including substrate pockets; a gas injector disposed over the susceptor, the gas injector having first process regions, the gas injector including a first gas mixing hub and first distribution valves connecting the first gas mixing hub to the first process regions; and a controller connected to the gas injector and the susceptor, the controller being configured to: connect a first precursor material and a carrier gas to the first gas mixing hub; mix the first precursor material and the carrier gas in the first gas mixing hub to produce a first precursor gas; rotate the susceptor to rotate a first substrate disposed in one of the substrate pockets; and while rotating the susceptor, control the first distribution valves to sequentially introduce the first precursor gas at each of the first process regions as the first substrate enters each first process region.
    Type: Application
    Filed: May 20, 2019
    Publication date: January 16, 2020
    Inventors: Yung-Chang Chang, Meng-Yin Tsai, Tung-Hsiung Liu, Liang-Yu Yeh, Chun-Yi Lee, Kuo-Hsi Huang
  • Publication number: 20190319034
    Abstract: A memory device and a method for manufacturing the memory device are provided. The memory device includes a substrate, a plurality of first gate structures, a first dielectric layer, a second dielectric layer, a third dielectric layer and a contact plug. The first gate structures are formed on an array region of the substrate. The first dielectric layer is formed on top surfaces and sidewalls of the first gate structures. The second dielectric layer is formed on the first dielectric layer and in direct contact with the first dielectric layer. The second dielectric layer and the first dielectric layer are made of the same material. The third dielectric layer is formed between the first gate structures and defines a plurality of contact holes exposing the substrate. The contact plug fills the contact holes.
    Type: Application
    Filed: April 12, 2019
    Publication date: October 17, 2019
    Inventors: Shu-Ming LEE, Tzu-Ming OU YANG, Meng-Chang CHAN
  • Patent number: 10084433
    Abstract: In accordance with an embodiment, a feedforward filter includes a first path, at least one second path and a signal combiner. The first path has a first translational filter, and employed for providing a first frequency response and generating a first output in response to an input signal based on the first frequency response. The at least one second path has a second translational filter and is coupled to the first path. The at least one second path is employed for providing a second frequency response that is different from the first frequency response to the input signal, and generating at least one second output in response to the input signal based on the second frequency response. The signal combiner is coupled to the first path and the second path, and employed for combining the first output and the at least one second output to generate a filtered signal.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: September 25, 2018
    Assignee: MediaTek Inc.
    Inventors: Ying-Tsang Lu, Chih-Ming Hung, Meng-Chang Lee
  • Patent number: 9871487
    Abstract: A harmonic translational filter includes a first path, a second path and a signal combiner. The first path has a first translational filter that is driven by a plurality of first oscillation signals, and is arranged to generate a first output signal according to an input signal. The second path has a second translation filter that is driven by a plurality of second oscillation signals that are different from the first oscillation signals in phase. The second path is coupled to the first path and arranged to generate a second output signal according to the input signal. The signal combiner is coupled to the first path and the second path, and arranged to combine the first output signal and the second output signal to generate a filtered signal.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: January 16, 2018
    Assignee: MEDIATEK INC.
    Inventors: Ying-Tsang Lu, Chih-Ming Hung, Meng-Chang Lee
  • Publication number: 20160380593
    Abstract: A harmonic-rejection translational filter includes: a first path, a second path and a signal combiner. The first path has a first translational filter that is driven by a plurality of first oscillation signals, and is arranged to generate a first output signal according to an input signal. The second path has a second translation filter that is driven by a plurality of second oscillation signals that are different from the first oscillation signals in phase. The second path is coupled to the first path and arranged to generate a second output signal according to the input signal. The signal combiner is coupled to the first path and the second path, and arranged to combine the first output signal and the second output signal to SIN generate a filtered signal.
    Type: Application
    Filed: March 13, 2015
    Publication date: December 29, 2016
    Inventors: Ying-Tsang Lu, Chih-Ming Hung, Meng-Chang Lee
  • Publication number: 20160380618
    Abstract: Described in embodiments herein are techniques for realizing filters having a variety of frequency responses, such as multiple pass-bands, high out-of-band rejection, without complicated designs. In accordance with an embodiment, a feedforward filter includes a first path, at least one second path and a signal combiner. The first path has a first translational filter, and employed for providing a first frequency response and generating a first output in response to an input signal based on the first frequency response. The at least one second path has a second translational filter and is coupled to the first path. The at least one second path is employed for providing a second frequency response that is different from the first frequency response to the input signal, and generating at least one second output in response to the input signal based on the second frequency response.
    Type: Application
    Filed: March 13, 2015
    Publication date: December 29, 2016
    Inventors: Ying-Tsang Lu, Chih-Ming Hung, Meng-Chang Lee
  • Patent number: 9383856
    Abstract: A touch sensing circuit and method is provided. The touch sensing circuit discriminates a common voltage change of a display panel couple to the touch sensor in a touch panel display apparatus. The touch sensor comprises a plurality of sensor electrodes. The touch sensing circuit includes a plurality of channel circuits, each of which includes a reset switch and a sensing switch for alternately conducting an associated sensor electrode to a reset voltage and a charge collecting circuit. The channel circuits are divided to different groups that operate according to interleaving timings for encompassing possible common voltage changes.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: July 5, 2016
    Assignee: MStar Semiconductor, Inc.
    Inventors: Guo-Kiang Hung, Hsuan-I Pan, Ming-Chang Tsai, Meng-Chang Lee, Shih-Tsung Yang
  • Publication number: 20120086656
    Abstract: A touch sensing circuit and method is provided. The touch sensing circuit discriminates a common voltage change of a display panel couple to the touch sensor in a touch panel display apparatus. The touch sensor comprises a plurality of sensor electrodes. The touch sensing circuit includes a plurality of channel circuits, each of which includes a reset switch and a sensing switch for alternately conducting an associated sensor electrode to a reset voltage and a charge collecting circuit. The channel circuits are divided to different groups that operate according to interleaving timings for encompassing possible common voltage changes.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 12, 2012
    Applicant: MSTAR SEMICONDUCTOR, INC.
    Inventors: Guo-Kiang Hung, Hsuan-I Pan, Ming-Chang Tsai, Meng-Chang Lee, Shih-Tsung Yang
  • Patent number: 8055231
    Abstract: Methods and apparatus to perform radio frequency (RF) analog-to-digital conversion are described. According to one example, a receiver includes an amplifier to amplify received analog RF signals and a mixer-free circuit for converting the received analog RF signals to digital signals.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: November 8, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Khurram Muhammad, Meng-Chang Lee, Dirk Leipold
  • Publication number: 20110065403
    Abstract: Methods and apparatus to perform radio frequency (RF) analog-to-digital conversion are described. According to one example, a receiver includes an amplifier to amplify received analog RF signals and a mixer-free circuit for converting the received analog RF signals to digital signals.
    Type: Application
    Filed: November 18, 2010
    Publication date: March 17, 2011
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Khurram Muhammad, Meng-Chang Lee, Dirk Leipold
  • Patent number: 7904048
    Abstract: A multi-tap direct sub-sampling mixing system for wireless receivers is provided with a dynamically configurable passive switched capacitor filter. A front end amplifier is connected to receive a signal. The passive switched capacitor filter is connected to receive the amplified signal and has an output for providing a filtered signal. The switched capacitor filter has at least two sections that are each operable as a pole, wherein a first section of the at least two sections has sets of at least two stacked capacitors interconnected with a set of switches operable to amplify in input voltage provided to an input of the first section in response to operation of the set of switches; and a back end section connected to the output of the switched capacitor filter to receive the filtered signal.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: March 8, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Meng-Chang Lee, Khurram Muhammad
  • Patent number: 7885625
    Abstract: Methods and apparatus to perform radio frequency (RF) analog-to-digital conversion are described. According to one example, a receiver includes an amplifier to amplify received analog RF signals and a mixer-free circuit for converting the received analog RF signals to digital signals.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: February 8, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Khurram Muhammad, Meng-Chang Lee, Dirk Leipold
  • Publication number: 20100283665
    Abstract: A digitally controlled mechanism for the minimization of the self-interference caused by an amplitude modulated signal generated within a polar transmitter to the oscillator circuit, where the carrier of that transmitter is created. A digitally controlled delay between the circuit where the signal is generated and the circuit where it is amplitude-modulated allows adjustment of the delay or phase-shift between the aggressing and victim signals. The optimal delay that is to be introduced in the path is determined, and a corresponding control word is generated to arrive at the selected delay/phase-shift.
    Type: Application
    Filed: May 5, 2009
    Publication date: November 11, 2010
    Inventors: Imran Bashir, Robert Bogdan Staszewski, Oren Eliezer, Meng-Chang Lee
  • Patent number: 7808327
    Abstract: Methods and systems to provide digitally controlled crystal oscillators are disclosed. One example method includes determining a state of an oscillator system and selecting a first output of a digitally controlled crystal oscillator or a second output of a second oscillator based on the determination. In an example implementation, the second oscillator is a ring oscillator.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: October 5, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Gennady Feygin, Khurram Muhammad, Chih-Ming Hung, Meng-Chang Lee
  • Publication number: 20090002066
    Abstract: A multi-tap direct sub-sampling mixing system for wireless receivers is provided with a dynamically configurable passive switched capacitor filter. A front end amplifier is connected to receive a signal. The passive switched capacitor filter is connected to receive the amplified signal and has an output for providing a filtered signal. The switched capacitor filter has at least two sections that are each operable as a pole, wherein a first section of the at least two sections has sets of at least two stacked capacitors interconnected with a set of switches operable to amplify in input voltage provided to an input of the first section in response to operation of the set of switches; and a back end section connected to the output of the switched capacitor filter to receive the filtered signal.
    Type: Application
    Filed: November 5, 2007
    Publication date: January 1, 2009
    Inventors: Meng-Chang Lee, Khurram Muhammad
  • Publication number: 20080227424
    Abstract: Methods and apparatus to perform radio frequency (RF) analog-to-digital conversion are described. According to one example, a receiver includes an amplifier to amplify received analog RF signals and a mixer-free circuit for converting the received analog RF signals to digital signals.
    Type: Application
    Filed: March 13, 2007
    Publication date: September 18, 2008
    Inventors: Khurram Muhammad, Meng-Chang Lee, Dirk Leipold
  • Publication number: 20080042755
    Abstract: Methods and systems to provide digitally controlled crystal oscillators are disclosed. One example method includes determining a state of an oscillator system and selecting a first output of a digitally controlled crystal oscillator or a second output of a second oscillator based on the determination. In an example implementation, the second oscillator is a ring oscillator.
    Type: Application
    Filed: August 7, 2006
    Publication date: February 21, 2008
    Inventors: Gennady Feygin, Khurram Muhammad, Chih-Ming Hung, Meng-Chang Lee