Patents by Inventor Wei Min Chan

Wei Min Chan 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: 9799394
    Abstract: A static random access memory (SRAM) including at least a memory cell array, a first data line, a second data line, a third data line and a driver circuit. The first data line is electrically coupled with the memory cell array. The second data line is electrically coupled with the memory cell array. The driver circuit is electrically coupled with the first data line, the second data line and the third data line. The driver circuit includes a recovery circuit electrically coupled with the first data line, the second data line and the third data line. During a write operation of the SRAM, the recovery circuit is configured to pull a voltage level of the first data line to a first voltage level when the recovery circuit is enabled.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: October 24, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Wei-Cheng Wu, Kao-Cheng Lin, Wei Min Chan, Yen-Huei Chen
  • Publication number: 20170294224
    Abstract: A static random access memory (SRAM) includes a bit cell that receives an operating voltage and a reference voltage, and includes a p-type pass gate. A bit information path is connected to the bit cell by the p-type pass gate, and a pre-discharge circuit is connected to the bit information path. The pre-discharge circuit includes an n-type transistor that discharges the bit information path to the reference voltage.
    Type: Application
    Filed: June 26, 2017
    Publication date: October 12, 2017
    Inventors: Wei-Cheng WU, Wei Min CHAN, Yen-Huei CHEN, Hung-Jen LIAO, Ping-Wei WANG
  • Patent number: 9753895
    Abstract: A method and a corresponding system for process variation analysis of an integrated circuit are provided. A netlist is generated describing electronic devices of an integrated circuit in terms of device parameters and process parameters. The process parameters include local process parameters individual to the electronic devices and global process parameters common to the electronic devices. Critical electronic devices are identified having device parameters with greatest contributions to a performance parameter of a design specification of the integrated circuit. Sensitivity values are determined for the global process parameters and local process parameters of the critical electronic devices. The sensitivity values represent how sensitive the one or more performance parameters are to variations in the global and local process parameters of the critical electronic devices. Monte Carlo (MC) samples are sorted based on the sensitivity values.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: September 5, 2017
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chin-Cheng Kuo, Kmin Hsu, Wei-Yi Hu, Wei Min Chan, Jui-Feng Kuan
  • Patent number: 9704565
    Abstract: A method of using a static random access memory (SRAM) includes pre-discharging a data line to a reference voltage, activating a bit cell connected to the data line, wherein the bit cell comprises a p-type pass gate, and exchanging bit information between the data line and the activated bit cell.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: July 11, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Wei-Cheng Wu, Wei Min Chan, Yen-Huei Chen, Hung-Jen Liao, Ping-Wei Wang
  • Publication number: 20170178719
    Abstract: A device is disclosed that includes first memory cells, second memory cells, a first conductive line and a second conductive line. The first conductive line is electrically disconnected from the second conductive line. The first conductive line receives a first power voltage for the plurality of first memory cells. The second conductive line receives a second power voltage that is independent from the first power voltage, for the plurality of second memory cells.
    Type: Application
    Filed: October 27, 2016
    Publication date: June 22, 2017
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Wei-Cheng WU, Chih-Yu LIN, Kao-Cheng LIN, Wei-Min CHAN, Yen-Huei CHEN
  • Patent number: 9685223
    Abstract: A voltage controller is provided that is connected to a voltage inducing circuit which is connected to a static random-access memory (SRAM) cell. The voltage controller comprises a voltage clamping circuit and a pull up circuit. The voltage clamping circuit comprises one or more transistors. The voltage clamping circuit is configured to inhibit a second voltage of a second signal at a second node of the voltage inducing circuit from exceeding a first specified voltage threshold so that a fifth voltage of a fifth signal at a fifth node of the voltage inducing circuit is inhibited from exceeding a second specified voltage threshold. The pull up circuit is configured to maintain the second voltage substantially equal to a specified pull up voltage. The fifth node is connected to the SRAM cell, and a voltage to which the SRAM cell is exposed is thereby controlled.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: June 20, 2017
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Wei-Cheng Wu, Wei Min Chan, Yen-Huei Chen, Hung-Jen Liao
  • Publication number: 20170148507
    Abstract: A three dimensional dual-port bit cell generally comprises a first portion disposed on a first tier, wherein the first portion includes a plurality of port elements. The dual-port bit cell also includes a second portion disposed on a second tier that is vertically stacked with respect to the first tier using at least one via, wherein the second portion includes a latch.
    Type: Application
    Filed: February 2, 2017
    Publication date: May 25, 2017
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Wei Min CHAN, Wei-Cheng WU, Yen-Huei CHEN
  • Publication number: 20170110461
    Abstract: A device is disclosed that includes a memory bit cell, a first word line, a pair of metal islands and a pair of connection metal lines. The first word line is disposed in a first metal layer and is electrically coupled to the memory bit cell. The pair of metal islands are disposed in the first metal layer at opposite sides of the word line and are electrically coupled to a power supply. The pair of connection metal lines are disposed in a second metal layer and are configured to electrically couple the metal islands to the memory bit cell respectively.
    Type: Application
    Filed: June 18, 2016
    Publication date: April 20, 2017
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Hidehiro FUJIWARA, Wei-Min CHAN, Chih-Yu LIN, Yen-Huei CHEN, Hung-Jen LIAO
  • Patent number: 9576645
    Abstract: A three dimensional dual-port bit cell generally comprises a first portion disposed on a first tier, wherein the first portion includes a plurality of port elements. The dual-port bit cell also includes a second portion disposed on a second tier that is vertically stacked with respect to the first tier using at least one via, wherein the second portion includes a latch.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: February 21, 2017
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Wei Min Chan, Wei-Cheng Wu, Yen-Huei Chen
  • Patent number: 9530727
    Abstract: A method comprises: forming a plurality of reference voltage patterns in a first layer of a semiconductor substrate using a first mask, the reference voltage patterns including alternating first reference voltage patterns and second reference voltage patterns; and forming a plurality of signal patterns in the first layer of the semiconductor substrate using a second mask, ones of the plurality of signal patterns located between successive pairs of reference voltage patterns.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: December 27, 2016
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: You-Cheng Xiao, Wei Min Chan, Ken-Hsien Hsieh
  • Patent number: 9519735
    Abstract: In some methods, a number of input data sets is provided for an integrated circuit (IC) model. A number of scores for the number of input data sets, respectively, are then determined based on probabilities of the respective input data sets resulting in a failure condition, which exists when the IC model fails to meet a predetermined yield criteria. A simulation order for the number of input data sets is then assigned according to the determined number of scores.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: December 13, 2016
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chin-Cheng Kuo, Kmin Hsu, Wei-Yi Hu, Wei Min Chan, Jui-Feng Kuan
  • Publication number: 20160293248
    Abstract: A static random access memory (SRAM) including at least a memory cell array, a first data line, a second data line, a third data line and a driver circuit. The first data line is electrically coupled with the memory cell array. The second data line is electrically coupled with the memory cell array. The driver circuit is electrically coupled with the first data line, the second data line and the third data line. The driver circuit includes a recovery circuit electrically coupled with the first data line, the second data line and the third data line. During a write operation of the SRAM, the recovery circuit is configured to pull a voltage level of the first data line to a first voltage level when the recovery circuit is enabled.
    Type: Application
    Filed: April 27, 2015
    Publication date: October 6, 2016
    Inventors: Wei-Cheng WU, Kao-Cheng LIN, Wei Min CHAN, Yen-Huei CHEN
  • Patent number: 9389511
    Abstract: A method for forming patterns of organic polymer materials. The method can be used to form a layer with two patterned organic polymer materials. The photoresist and solvents used in the photoresist deposition and removal steps do not substantially affect the organic polymer materials.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: July 12, 2016
    Assignee: Cornell University
    Inventors: Evan L. Schwartz, Wei Min Chan, Jin-Kyun Lee, Sandip Tiwari, Christopher K. Ober
  • Publication number: 20160148676
    Abstract: A method of using a static random access memory (SRAM) includes pre-discharging a data line to a reference voltage, activating a bit cell connected to the data line, wherein the bit cell comprises a p-type pass gate, and exchanging bit information between the data line and the activated bit cell.
    Type: Application
    Filed: February 2, 2016
    Publication date: May 26, 2016
    Inventors: Wei-Cheng WU, Wei Min CHAN, Yen-Huei CHEN, Hung-Jen LIAO, Ping-Wei WANG
  • Patent number: 9281056
    Abstract: A static random access memory (SRAM) including a bit cell, wherein the bit cell includes at least two p-type pass gates. The SRAM further includes a bit line connected to the bit cell, and a bit line bar connected to the bit cell. The SRAM further includes a pre-discharge circuit connected to the bit line and to the bit line bar, wherein the pre-discharge circuit includes at least two n-type transistors. The SRAM further includes cross-coupled transistors connected to the bit line and to the bit line bar, wherein each transistor of the cross-coupled transistors is an n-type transistor. The SRAM further includes a write multiplexer connected to the bit line and to the bit line bar, wherein the write multiplexer includes two p-type transistors.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: March 8, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Wei-Cheng Wu, Wei Min Chan, Yen-Huei Chen, Hung-Jen Liao, Ping-Wei Wang
  • Patent number: 9275710
    Abstract: A semiconductor memory comprises a dual-port memory array having a plurality of cross-access dual-port bit cells arranged in a plurality of rows and a plurality of columns, wherein each of the plurality of cross-access dual-port bit cells has two cross-access ports for read and write of one or more bits of data to the cross-access dual port bit cell. The semiconductor memory further comprises a pair of word lines associated with at least one of the plurality of rows of the dual-port memory array, wherein the pair of word lines is configured to carry a pair of row selection signals for enabling one or more read and write operations on one or more cross-access dual-port bit cells in the row.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: March 1, 2016
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Wei Min Chan, Kao-Cheng Lin, Yen-Huei Chen
  • Publication number: 20160055273
    Abstract: A method includes determining a sampling region in a sample space, generating samples in the sampling region without generating samples outside the sampling region, and simulating a performance of a device using the generated samples as input data. The sample space is defined by a plurality of variables associated with the device. Values of the plurality of variables in the sampling region having lower probabilities to meet a specification of the device than values of the plurality of variables outside the sampling region. The method is performed at least partially by at least one processor.
    Type: Application
    Filed: August 20, 2014
    Publication date: February 25, 2016
    Inventors: Chin-Cheng KUO, Wei Min CHAN, Wei-Yu HU, Jui-Feng KUAN
  • Publication number: 20160027501
    Abstract: A three dimensional dual-port bit cell generally comprises a first portion disposed on a first tier, wherein the first portion includes a plurality of port elements. The dual-port bit cell also includes a second portion disposed on a second tier that is vertically stacked with respect to the first tier using at least one via, wherein the second portion includes a latch.
    Type: Application
    Filed: October 5, 2015
    Publication date: January 28, 2016
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Wei Min CHAN, Wei-Cheng WU, Yen-Huei CHEN
  • Patent number: 9239902
    Abstract: A method of preparing a layout for manufacturing an integrated circuit chip according to a circuit design, the method includes generating a pattern for the layout based on the circuit design, determining, by a processor, if at least one layout rule is violated by including the generated pattern in the layout and modifying the layout if the at least one layout rule is violated. The at least one layout rule includes a constraint on a relationship between a power line pattern and a device pattern in the layout. The at least one layout rule is specified by comparing a predetermined threshold value with one of an estimated voltage drop along a signal path in a second layout different than the layout or an estimated current density on the signal path in the second layout. The constraint includes a minimum number of contacts per device or power vias per device.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: January 19, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chen-Lin Yang, Wei Min Chan
  • Patent number: 9235675
    Abstract: An embodiment includes a computer program product for providing a yield prediction. The computer program product has a non-transitory computer readable medium with a computer program embodied thereon. The computer program comprises computer program code for obtaining a representation of a circuit. The circuit comprises a common path and a critical path, and the critical path represents multiple parallel paths. The computer program further comprises computer program code for obtaining a first table representing the common path and a second table representing the multiple parallel paths and computer program code for performing a variable based simulation based on the representation of the circuit, the first table, and the second table. The computer program also comprises computer program code for determining a result indication of each of the multiple parallel paths based on the variable based simulation compared with a predetermined specification.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: January 12, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Wei Min Chan, Shao-Yu Chou