Patents by Inventor Li-Wen Wang

Li-Wen Wang 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: 20190341346
    Abstract: A method of designing a memory circuit is provided that includes generating a layout of a first memory cell using an integrated circuit design system. The layout of the first memory cell is generated by routing a first word line in a first layer on a first level, and routing a second word line in the first layer. Also, the method includes generating a layout of a second memory cell using the integrated circuit design system. The layout of the second memory cell is generated by routing a third word line in the first layer, the second word line being between the first word line and the third word line, and routing a fourth word line in the first layer, the third word line being between the second word line and the fourth word line. Moreover, the method includes assigning a first color scheme to the first word line and to the third word line, and assigning a second color scheme to the second word line and to the fourth word line.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Inventors: Hidehiro FUJIWARA, Li-Wen WANG, Yen-Huei CHEN, Hung-Jen LIAO
  • Patent number: 10431295
    Abstract: A static random access memory (SRAM) that includes a memory cell comprising at least two p-type pass gates. The SRAM also includes a first data line connected to the memory cell, a second data line connected to the memory cell and a voltage control unit connected to the first data line, wherein the voltage control unit is configured to control the memory cell.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: October 1, 2019
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Li-Wen Wang, Chih-Yu Lin, Yen-Huei Chen, Hung-Jen Liao
  • Patent number: 10354952
    Abstract: A memory cell comprises a first word line in a first layer on a first level. The memory cell also comprises a second word line having a first portion in the first layer and a second portion in a second layer. The second layer is on a second level different from the first level. The memory cell further comprises a first via layer coupling the first portion of the second word line with the second portion of the second word line.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: July 16, 2019
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hidehiro Fujiwara, Li-Wen Wang, Yen-Huei Chen, Hung-Jen Liao
  • Publication number: 20190122960
    Abstract: An apparatus and method of three dimensional conductive lines comprising a first memory column segment in a first tier, a second memory column segment in a second tier, and conductive lines connecting the first memory column segment to the second memory column segment. In some embodiments a conductive line is disposed in the first tier on a first side of the memory column and in the second tier on a second side of the memory column.
    Type: Application
    Filed: December 18, 2018
    Publication date: April 25, 2019
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Yu Lin, Kao-Cheng Lin, Li-Wen Wang, Yen-Huei Chen
  • Publication number: 20190103158
    Abstract: A circuit includes a column of memory cells, a first read data line coupled exclusively with a first subset of memory cells of the column of memory cells, a second read data line coupled exclusively with a second subset of memory cells of the column of memory cells, and a plurality of read word lines. Each read word line of the plurality of read word lines is coupled with a memory cell of the first subset of memory cells and with a memory cell of the second subset of memory cells.
    Type: Application
    Filed: November 30, 2018
    Publication date: April 4, 2019
    Inventors: Hidehiro FUJIWARA, Li-Wen WANG, Yen-Huei CHEN, Hung-Jen LIAO
  • Patent number: 10163759
    Abstract: An apparatus and method of three dimensional conductive lines comprising a first memory column segment in a first tier, a second memory column segment in a second tier, and conductive lines connecting the first memory column segment to the second memory column segment. In some embodiments a conductive line is disposed in the first tier on a first side of the memory column and in the second tier on a second side of the memory column.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: December 25, 2018
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Yu Lin, Kao-Cheng Lin, Li-Wen Wang, Yen-Huei Chen
  • Patent number: 10163491
    Abstract: A memory circuit includes first and second memory cells. The first memory cell has an access port having a pass gate. The second memory cell also has an access port having a pass gate. The first and second memory cells abut one another along a column direction. The circuit includes at least one conductive structure over the first and second memory cells. The conductive structure may be two interconnected conductive lines. The conductive structure extends along a row direction in a conductive layer and is electrically coupled to the gate terminals of the pass gates.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: December 25, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hidehiro Fujiwara, Li-Wen Wang, Yen-Huei Chen, Hung-Jen Liao
  • Publication number: 20180336944
    Abstract: A semiconductor memory device comprising a plurality of memory cells configured to store digital data and an input multiplexer configured to enable the selection of a particular memory cell from the plurality of memory cells. The semiconductor memory device further comprises a read/write driver circuit configured to read data from the selected memory cell and write data to the selected memory cell, and a write logic block configured to provide logical control to the read/write driver circuit for writing data to the selected of memory cell. The read/write driver circuit may be coupled to the read/write input multiplexer by a data line and an inverted data line and the read and the write operations to the selected memory cell occur over the same data line and inverted data line.
    Type: Application
    Filed: May 16, 2018
    Publication date: November 22, 2018
    Inventors: Chien-Yuan Chen, Che-Ju Yeh, Hau-Tai Shieh, Cheng-Hung Lee, Hung-Jen Liao, Sahil Preet Singh, Manish Arora, Hemant Patel, Li-Wen Wang
  • Publication number: 20180269134
    Abstract: An apparatus and method of three dimensional conductive lines comprising a first memory column segment in a first tier, a second memory column segment in a second tier, and conductive lines connecting the first memory column segment to the second memory column segment. In some embodiments a conductive line is disposed in the first tier on a first side of the memory column and in the second tier on a second side of the memory column.
    Type: Application
    Filed: May 18, 2018
    Publication date: September 20, 2018
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Yu Lin, Kao-Cheng Lin, Li-Wen Wang, Yen-Huei Chen
  • Patent number: 9997436
    Abstract: An apparatus and method of three dimensional conductive lines comprising a first memory column segment in a first tier, a second memory column segment in a second tier, and conductive lines connecting the first memory column segment to the second memory column segment. In some embodiments a conductive line is disposed in the first tier on a first side of the memory column and in the second tier on a second side of the memory column.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: June 12, 2018
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Yu Lin, Kao-Cheng Lin, Li-Wen Wang, Yen-Huei Chen
  • Publication number: 20180078511
    Abstract: Provided is a sequentially decomposable polypeptide-based nanocarrier with protective shell for delivery of hydrophobic drugs and preparation thereof.
    Type: Application
    Filed: October 21, 2016
    Publication date: March 22, 2018
    Inventors: LI-WEN WANG, TZU-WEI WANG
  • Patent number: 9911473
    Abstract: In some embodiments, a memory device includes a memory bank, a global data line, a first tri-state unit, a latch, a second tri-state unit and a pre-charge unit. The first tri-state unit is configured between the memory bank and the global data line. The latch is configured to provide a state signal based on a data signal from the memory bank. The second tri-state unit is configured between the global data line and the latch. The pre-charge unit pre-charges the global data line to a first intermediate level or a second intermediate level depending on the state signal during the global data line is caused to be electrically isolated from the memory bank by the first tri-state unit and electrically isolated from the latch by the second tri-state unit.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: March 6, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Sahil Preet Singh, Li-Wen Wang, Manish Arora
  • Publication number: 20170098596
    Abstract: An apparatus and method of three dimensional conductive lines comprising a first memory column segment in a first tier, a second memory column segment in a second tier, and conductive lines connecting the first memory column segment to the second memory column segment. In some embodiments a conductive line is disposed in the first tier on a first side of the memory column and in the second tier on a second side of the memory column.
    Type: Application
    Filed: December 15, 2016
    Publication date: April 6, 2017
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chih-Yu Lin, Kao-Cheng Lin, Li-Wen Wang, Yen-Huei Chen
  • Publication number: 20160372181
    Abstract: A memory circuit includes first and second memory cells. The first memory cell has an access port having a pass gate. The second memory cell also has an access port having a pass gate. The first and second memory cells abut one another along a column direction. The circuit includes at least one conductive structure over the first and second memory cells. The conductive structure may be two interconnected conductive lines. The conductive structure extends along a row direction in a conductive layer and is electrically coupled to the gate terminals of the pass gates.
    Type: Application
    Filed: August 30, 2016
    Publication date: December 22, 2016
    Inventors: Hidehiro FUJIWARA, Li-Wen WANG, Yen-Huei CHEN, Hung-Jen LIAO
  • Patent number: 9524920
    Abstract: An apparatus and method of three dimensional conductive lines comprising a first memory column segment in a first tier, a second memory column segment in a second tier, and conductive lines connecting the first memory column segment to the second memory column segment. In some embodiments a conductive line is disposed in the first tier on a first side of the memory column and in the second tier on a second side of the memory column.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: December 20, 2016
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Yu Lin, Kao-Cheng Lin, Li-Wen Wang, Yen-Huei Chen
  • Patent number: 9449667
    Abstract: A memory circuit includes a plurality of memory cells arranged into columns and one or more pairs of adjacent rows and one or more first word lines. Each memory cell of the plurality of memory cells includes a data node, a first access node, and a first pass gate coupled to the first access node and configured to selectively alter a voltage level at the first access node according to a voltage level at the data node if the first pass gate is turned on. A word line of the one or more first word lines is coupled with the first pass gates of a pair of the one or more pairs of adjacent rows, and the first pass gates of the pair of the one or more pairs of adjacent rows are configured to be selectively turned on responsive to a voltage level at the word line.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: September 20, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hidehiro Fujiwara, Li-Wen Wang, Yen-Huei Chen, Hung-Jen Liao
  • Patent number: 9449661
    Abstract: A memory device includes a memory cell electrically connected to a power line and a power supply unit configured to control a voltage level on the power line. The power supply unit receives a control signal corresponding to a write cycle of the memory cell and, responsive to a first state of the control signal, outputs a first voltage level on the power line. Responsive to a second state of the control signal, the power supply unit outputs a second voltage level on the power line, the second voltage level having a magnitude less than a magnitude of the first voltage level.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: September 20, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yen-Huei Chen, Li-Wen Wang, Chih-Yu Lin
  • Patent number: 9343140
    Abstract: One or more techniques or systems for boosting a read word line (RWL) or a write word line (WWL) of a two port synchronous random access memory (SRAM) bit cell array are provided herein. In some embodiments, a boosted control block is configured to generate a boosted word line signal configured to operate a RWL, a WWL, or a read write word line (RWWL). In some embodiments, the boosted word line signal includes a first stage and a second stage. For example, the first stage is associated with a first stage voltage level at a positive supply voltage (Vdd) voltage level and the second stage is associated with a second stage voltage level above the Vdd voltage level. In this manner, a read or write operation is boosted for an SRAM bit cell, because the second stage boosts a corresponding transistor in the SRAM bit cell, for example.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: May 17, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Yen-Huei Chen, Chih-Yu Lin, Li-Wen Wang, Hung-Jen Liao, Jonathan Tsung-Yung Chang
  • Publication number: 20160126178
    Abstract: A memory cell comprises a first word line in a first layer on a first level. The memory cell also comprises a second word line having a first portion in the first layer and a second portion in a second layer. The second layer is on a second level different from the first level. The memory cell further comprises a first via layer coupling the first portion of the second word line with the second portion of the second word line.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 5, 2016
    Inventors: Hidehiro FUJIWARA, Li-Wen WANG, Yen-Huei CHEN, Hung-Jen LIAO
  • Publication number: 20150380082
    Abstract: One or more techniques or systems for boosting a read word line (RWL) or a write word line (WWL) of a two port synchronous random access memory (SRAM) bit cell array are provided herein. In some embodiments, a boosted control block is configured to generate a boosted word line signal configured to operate a RWL, a WWL, or a read write word line (RWWL). In some embodiments, the boosted word line signal includes a first stage and a second stage. For example, the first stage is associated with a first stage voltage level at a positive supply voltage (Vdd) voltage level and the second stage is associated with a second stage voltage level above the Vdd voltage level. In this manner, a read or write operation is boosted for an SRAM bit cell, because the second stage boosts a corresponding transistor in the SRAM bit cell, for example.
    Type: Application
    Filed: September 3, 2015
    Publication date: December 31, 2015
    Inventors: Yen-Huei Chen, Chih-Yu Lin, Li-Wen Wang, Hung-Jen Liao, Jonathan Tsung-Yung Chang