Patents by Inventor Meng-Chieh CHANG

Meng-Chieh 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).

  • Publication number: 20240371439
    Abstract: A resistive random access memory (ReRAM) apparatus is provided. The ReRAM apparatus includes a plurality of memory cells, each of the memory cells comprises a transistor and a resistor; a bit line connected to a first terminal of the resistor of each of the memory cells; a local source line connected to a source electrode of the transistor of each of the memory cells; and a driving cell connected between the local source line and a global source line. A method for operating the ReRAM apparatus is also provided.
    Type: Application
    Filed: May 4, 2023
    Publication date: November 7, 2024
    Inventors: JUI-JEN WU, YU-SHENG CHEN, YI CHING ONG, MENG-FAN CHANG, KUEN-YI CHEN, JEN-CHIEH LIU, TAI-HAO WEN, KUO-CHING HUANG
  • Publication number: 20240371442
    Abstract: An integrated circuit includes a memory storage having bit cells, a write path switch configured to have a connection state determined by a reliability indicator, and a write driver having an input configured to receive an input data from a write terminal through either a first write path or a second write path. The input data received through the first write path is configured to be equal to the data at the write terminal, and the input data received through the second write path is configured to be a bitwise complement of the data at the write terminal. The reliability indicator is configured to be set based on a majority bit value in the data or based on a minority bit value in the data.
    Type: Application
    Filed: July 12, 2024
    Publication date: November 7, 2024
    Inventors: Win-San KHWA, Jui Jen WU, Jen-Chieh LIU, Meng-Fan CHANG
  • Publication number: 20240363159
    Abstract: A memory device includes a set of word lines, first and second sets of bit lines, a first source line having first and second source line contacts, first and second strings of transistors electrically coupled in parallel between the first and second source line contacts of the source line, and first and second sets of data storage elements. Each word line in the set of word lines is electrically coupled to gates of a transistor in the first string and a corresponding transistor in the second string. The first set of data storage elements is electrically coupled between the first string of transistors and the first set of bit lines. The second set of data storage elements is electrically coupled between the second string of transistors and the second set of bit lines.
    Type: Application
    Filed: July 10, 2024
    Publication date: October 31, 2024
    Inventors: Jui-Jen WU, Win-San KHWA, Jen-Chieh LIU, Meng-Fan CHANG
  • Publication number: 20240363184
    Abstract: A system includes a memory cell array including multi-level cells, an input data scramble circuit configured to receive input data and match lower error tolerant bits with higher error tolerant bits to provide matched bit sets, wherein each of the matched bit sets includes at least one lower error tolerant bit and at least one higher error tolerant bit, and a write driver configured to receive the matched bit sets and store each of the matched bit sets into one memory cell of the multi-level cells.
    Type: Application
    Filed: July 9, 2024
    Publication date: October 31, 2024
    Inventors: Win-San KHWA, Jui-Jen WU, Jen-Chieh LIU, Meng-Fan CHANG
  • Publication number: 20240331748
    Abstract: A method of storing an input data of a data set into a memory storage having bit cells. The method includes determining a bit value of a characterization bit in the input data. The method also includes writing each of remaining bits in the input data into one of the bit cells either as the first state or as the second state conditioning upon whether the bit value of the characterization bit is a first value or a second value. Reading the bit cell with the first state consumes less energy than reading the bit cell with the second state or the bit cell with the first state has less retention errors than the bit cell with the second state.
    Type: Application
    Filed: June 11, 2024
    Publication date: October 3, 2024
    Inventors: Win-San KHWA, Jui-Jen WU, Jen-Chieh LIU, Meng-Fan CHANG
  • Publication number: 20240331755
    Abstract: A device includes a write bit line and a read bit line extending in a first direction, and a write word line and a read word line extending in a second direction perpendicular to the first direction. The device further includes a memory cell including a write transistor and a read transistor. The write transistor includes a first gate connected to the write word line, a first source/drain connected to the write bit line, and a second source/drain connected to a data storage node. The read transistor includes a second gate connected to the data storage node, a third source/drain connected to the read bit line, and a fourth source/drain connected to the read word line.
    Type: Application
    Filed: June 14, 2024
    Publication date: October 3, 2024
    Inventors: Jen-Chieh Liu, Jui-Jen Wu, Win-San Khwa, Yi-Lun Lu, Meng-Fan Chang
  • Patent number: 12080346
    Abstract: A memory device includes a set of word lines, a set of bit lines, a source line having first and second source line contacts, a set of transistors serially coupled between the first and second source line contacts of the source line, and a set of data storage elements. The set of transistors has gates coupled to corresponding word lines in the set of word lines. Each data storage element in the set of data storage elements is coupled between a common terminal of a corresponding pair of adjacent transistors in the set of transistors, and a corresponding bit line in the set of bit lines.
    Type: Grant
    Filed: May 17, 2022
    Date of Patent: September 3, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Jui-Jen Wu, Win-San Khwa, Jen-Chieh Liu, Meng-Fan Chang
  • Patent number: 12057182
    Abstract: A system includes a memory cell array including multi-level cells, an input data scramble circuit configured to receive input data and match lower error tolerant bits with higher error tolerant bits to provide matched bit sets, wherein each of the matched bit sets includes at least one lower error tolerant bit and at least one higher error tolerant bit, and a write driver configured to receive the matched bit sets and store each of the matched bit sets into one memory cell of the multi-level cells.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: August 6, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Win-San Khwa, Jui-Jen Wu, Jen-Chieh Liu, Meng-Fan Chang
  • Patent number: 12057164
    Abstract: A method of storing a data into a memory storage having bit cells. The method includes identifying each of the binary one and the binary zero in the data as either a majority bit value or a minority bit value based on the probability of finding the binary one in the data or based on the probability of finding the binary zero in the data. In the method, a bit of the data is stored into the bit cell as the more preferred state if the bit of the data has the majority bit value, and a bit of the data is stored into the bit cell as the less preferred state if the bit of the data has the minority bit value.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: August 6, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Win-San Khwa, Jui Jen Wu, Jen-Chieh Liu, Meng-Fan Chang
  • Publication number: 20240257866
    Abstract: A semiconductor device includes a memory cell including a first transistor, a second transistor, and a third transistor. The first transistor has a first gate terminal and the second transistor has a second gate terminal, the first gate terminal and the second gate terminal being connected to a first word line and a second word line, respectively. The first transistor has a pair of first source/drain terminals and the second transistor has a pair of second source/drain terminals, one of the pair of first source/drain terminals and one of the pair of second source/drain terminals being connected to a common bit line. The third transistor has a third gate terminal connected to the other of the pair of first source/drain terminals, and a pair of third source/drain terminals connected to the other of the pair of second source/drain terminals and a supply voltage, respectively.
    Type: Application
    Filed: January 31, 2023
    Publication date: August 1, 2024
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hung-Li Chiang, Jen-Chieh Liu, Jui-Jen Wu, Meng-Fan Chang, Jer-FU Wang, Iuliana Radu
  • Patent number: 12051457
    Abstract: A device includes a write bit line and a read bit line extending in a first direction, and a write word line and a read word line extending in a second direction perpendicular to the first direction. The device further includes a memory cell including a write transistor and a read transistor. The write transistor includes a first gate connected to the write word line, a first source/drain connected to the write bit line, and a second source/drain connected to a data storage node. The read transistor includes a second gate connected to the data storage node, a third source/drain connected to the read bit line, and a fourth source/drain connected to the read word line.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: July 30, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Jen-Chieh Liu, Jui-Jen Wu, Win-San Khwa, Yi-Lun Lu, Meng-Fan Chang
  • Patent number: 9817279
    Abstract: The present invention relates to a display device, comprising: a display unit comprising a pixel layer; a backlight unit; and a modulation unit disposed between the display unit and the backlight unit, wherein the modulation unit comprises a plurality of conductive layers and a liquid crystal layer disposed between the plurality of conductive layers, and the liquid crystal layer comprises a polymer dispersed liquid crystal (PDLC) or a polymer stabilized liquid crystal (PSLC).
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: November 14, 2017
    Assignee: INNOLUX CORPORATION
    Inventors: Yu-Wei Chen, Meng-Chieh Chang, Chia-Liang Hung
  • Publication number: 20160178834
    Abstract: A back light module is provided. The back light module includes a first light emitting module, a second light emitting module and an attenuator. The first light emitting module has a light output surface. The second light emitting module is disposed on one side of the first light emitting module opposite to the light output surface. The attenuator is disposed between the first light emitting module and the second light emitting module, and includes a first polarizer having a first absorption axis.
    Type: Application
    Filed: November 18, 2015
    Publication date: June 23, 2016
    Inventors: Chiao-Fu Yu, Fu-Chi Hu, Meng-Chieh Chang
  • Publication number: 20150271482
    Abstract: The present invention relates to a display device, comprising: a display unit comprising a pixel layer; a backlight unit; and a modulation unit disposed between the display unit and the backlight unit, wherein the modulation unit comprises a plurality of conductive layers and a liquid crystal layer disposed between the plurality of conductive layers, and the liquid crystal layer comprises a polymer dispersed liquid crystal (PDLC) or a polymer stabilized liquid crystal (PSLC).
    Type: Application
    Filed: February 11, 2015
    Publication date: September 24, 2015
    Inventors: Yu-Wei CHEN, Meng-Chieh CHANG, Chia-Liang HUNG