Patents by Inventor Yen-Huei Chen

Yen-Huei Chen 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: 9824729
    Abstract: A memory macro includes a first memory cell array, a first tracking circuit and a first pre-charge circuit. The first tracking circuit includes a first set of memory cells configured as a first set of loading cells responsive to a first set of control signals, a second set of memory cells configured as a first set of pull-down cells responsive to a second set of control signals, and a first tracking bit line coupled to the first set of memory cells and the second set of memory cells. The first set of pull-down cells and the first set of loading cells are configured to track a memory cell of the first memory cell array. The first pre-charge circuit is coupled to the first tracking bit line, and is configured to charge the first tracking bit line to a pre-charge voltage level responsive to a third set of control signals.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: November 21, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chien-Kuo Su, Cheng Hung Lee, Chiting Cheng, Hung-Jen Liao, Jonathan Tsung-Yung Chang, Yen-Huei Chen, Pankaj Aggarwal, Jhon Jhy Liaw
  • Patent number: 9812191
    Abstract: A memory device includes: a memory array comprising a first plurality of bit cells arranged along a first column; and a negative bit line (NBL) circuit, coupled to the memory array. The NBL circuit includes: a first pair of conducting gates that are coupled to the first plurality of bit cells through a bit line (BL) and a bit bar line (BBL) of the first column, respectively; and a pair of trigger circuits, coupled to the first pair of conducting gates, respectively, and configured to monitor voltage levels present on the BL and BBL of the first column through the respective first pair of conducting gates, and based on the monitored voltage levels, to assert an NBL enable signal so as to cause a negative voltage to be applied on either the BL or the BBL of the first column.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 7, 2017
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Avinash Chander, Yen-Huei Chen
  • 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
  • Publication number: 20170278555
    Abstract: A memory macro includes a first memory cell array, a first tracking circuit and a first pre-charge circuit. The first tracking circuit includes a first set of memory cells configured as a first set of loading cells responsive to a first set of control signals, a second set of memory cells configured as a first set of pull-down cells responsive to a second set of control signals, and a first tracking bit line coupled to the first set of memory cells and the second set of memory cells. The first set of pull-down cells and the first set of loading cells are configured to track a memory cell of the first memory cell array. The first pre-charge circuit is coupled to the first tracking bit line, and is configured to charge the first tracking bit line to a pre-charge voltage level responsive to a third set of control signals.
    Type: Application
    Filed: February 16, 2017
    Publication date: September 28, 2017
    Inventors: Chien-Kuo SU, Cheng Hung LEE, Chiting CHENG, Hung-Jen LIAO, Jonathan Tsung-Yung CHANG, Yen-Huei CHEN, Pankaj AGGARWAL, Jhon Jhy LIAW
  • Publication number: 20170271342
    Abstract: Arrays of static random access memory (SRAM) cells and methods of fabricating the same are provided. A first communication path is disposed a first distance from an edge of the array and is operable to control access to SRAM cells of a first row of the array for write operations. A second communication path is disposed a second distance from the edge of the array and is operable to control access to SRAM cells of a second row of the array for write operations. The second distance is different than the first distance. A first conductive structure is disposed a third distance from the edge of the array and is operable to control access to the SRAM cells of the first row for read operations. A second conductive structure is disposed the third distance from the edge of the array and is operable to control access to the SRAM cells of the second row for read operations.
    Type: Application
    Filed: March 9, 2017
    Publication date: September 21, 2017
    Inventors: Hidehiro Fujiwara, Hung-Jen Liao, Hsien-Yu Pan, Yen-Huei Chen
  • Publication number: 20170264276
    Abstract: A level shifter circuit is provided that uses a boosting circuit. The boosting circuit is configured to improve the operation of the level shifter circuit when the high voltages of voltage domains across the level shifter circuit are widely separated. A circuit apparatus includes a core level shifter circuit that changes a first voltage of an input signal to a second voltage of an output signal. The circuit apparatus further includes a first boosting circuit that is coupled to the core level shifter circuit and generates a first transient voltage applied to the core level shifter circuit when the input signal transitions from a low value to a high value. The circuit apparatus also includes a second boosting circuit that is coupled to the core level shifter circuit and generates a second transient voltage applied to the core level shifter circuit when the input signal transitions from a high value to a low value.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 14, 2017
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Mahmut Sinangil, Hsin-Hsin KO, Chiting CHENG, Yen-Huei CHEN, Hung-Jen LIAO, Jonathan Tsung-Yung CHANG
  • Patent number: 9762216
    Abstract: A level shifter circuit is provided that uses a boosting circuit. The boosting circuit is configured to improve the operation of the level shifter circuit when the high voltages of voltage domains across the level shifter circuit are widely separated. A circuit apparatus includes a core level shifter circuit that changes a first voltage of an input signal to a second voltage of an output signal. The circuit apparatus further includes a first boosting circuit that is coupled to the core level shifter circuit and generates a first transient voltage applied to the core level shifter circuit when the input signal transitions from a low value to a high value. The circuit apparatus also includes a second boosting circuit that is coupled to the core level shifter circuit and generates a second transient voltage applied to the core level shifter circuit when the input signal transitions from a high value to a low value.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: September 12, 2017
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Mahmut Sinangil, Hsin-Hsin Ko, Chiting Cheng, Yen-Huei Chen, Hung-Jen Liao, Jonathan Tsung-Yung Chang
  • Publication number: 20170243872
    Abstract: A device includes a Static Random Access Memory (SRAM) array, and an SRAM cell edge region abutting the SRAM array. The SRAM array and the SRAM cell edge region in combination include first gate electrodes having a uniform pitch. A word line driver abuts the SRAM cell edge region. The word line driver includes second gate electrodes, and the first gate electrodes have lengthwise directions aligned to lengthwise directions of respective ones of the second gate electrodes.
    Type: Application
    Filed: July 5, 2016
    Publication date: August 24, 2017
    Inventors: Fang Chen, Jhon Jhy Liaw, Min-Chang Liang, Ren-Fen Tsui, Shih-Chi Fu, Yen-Huei Chen
  • Patent number: 9741429
    Abstract: A memory device with an array of memory cells, a write driver circuit, and a write assist circuit is disclosed. The write driver circuit and the write assist circuit can be located opposite to one another relative to the array of memory cells. The write assist circuit can compensate for a parasitic element in bitlines by transferring write voltages to addressed memory cells located in a portion of a memory array opposite to the write driver circuit. The parasitic element can be, for example, a bitline path resistance that causes a voltage differential between a voltage at the output of the write driver circuit and another voltage at a bitline location associated with the addressed memory cell. The write assist circuit can compensate for the voltage differential at the bitline location associated with the addressed memory cell; thus improving the performance of memory write operations.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: August 22, 2017
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Yen-Huei Chen, Hidehiro Fujiwara, Hung-Jen Liao, Jonathan Tsung-Yung Chang
  • Publication number: 20170207227
    Abstract: A memory circuit includes a first column of memory cells arranged along a first direction, a first supply voltage line extending along the first direction in a first conductive layer of the memory circuit, a second supply voltage line, a first resistive device electrically connecting the first supply voltage line and the second supply voltage line, and a supply voltage source. Each memory cell of the first column of memory cells includes a supply voltage line segment. The first supply voltage line is made of at least the supply voltage line segments of the first column of memory cells. The supply voltage source is electrically coupled with first supply voltage line through one or more conductive paths, and the second supply voltage line and the first resistive device is in a lowest resistance path of the one or more conductive paths.
    Type: Application
    Filed: January 14, 2016
    Publication date: July 20, 2017
    Inventors: Yen-Huei CHEN, Hung-Jen LIAO, Chih-Yu LIN, Jonathan Tsung-Yung CHANG, Wei-Cheng WU
  • 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: 20170194037
    Abstract: In accordance with some embodiments of the present disclosure, a circuit structure is provided. The circuit structure comprises a first transistor, a second transistor, a storage node and a word-line. Each of the two transistors comprises a gate, a source and a drain. The storage node is connected to the gate of the first transistor. The word-line is connected to the gate of the second transistor. The first and second transistors are serially connected. The first and second threshold voltages are respectively associated with the first and second transistors, and the first threshold voltage is lower than the second threshold voltage.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 6, 2017
    Inventors: HIDEHIRO FUJIWARA, CHIH-YU LIN, WEI-CHENG WU, YEN-HUEI CHEN, HUNG-JEN LIAO
  • Publication number: 20170186750
    Abstract: An interconnect structure includes a lower interconnect layer, an intermediate interconnect layer, and an upper interconnect layer. First and second conductive lines in the lower interconnect layer extend generally in a first direction over a memory array region, and additional lower conductive lines in the lower interconnect layer extend generally in the first direction over a peripheral region. A first plurality of conductive line segments in the intermediate interconnect layer extend generally in the first direction over the memory array region, and additional intermediate conductive line segments in the intermediate interconnect layer extend generally in a second, perpendicular direction over the peripheral region. A second plurality of conductive line segments in the upper interconnect layer extend generally in the first direction over the memory array region, and additional upper conductive line segments in the upper interconnect layer extend generally in the first direction over the peripheral region.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 29, 2017
    Inventors: Sahil Preet Singh, Yen-Huei Chen, Avinash Chander
  • Publication number: 20170186483
    Abstract: A bit line architecture for dual-port static random-access memory (DP SRAM) is provided. An array of memory cells is arranged in rows and columns, and comprises a first subarray and a second subarray. A first pair of complementary bit lines (CBLs) extends along a column, from a first side of the array, and terminates between the first and second subarrays. A second pair of CBLs extends from the first side of the array, along the column, to a second side of the array. The CBLs of the second pair of CBLs have stepped profiles between the first and second subarrays. A third pair of CBLs and a fourth pair of CBLs extend along the column. The first and third pairs of CBLs electrically couple to memory cells in the first subarray, and the second and fourth pairs of CBLs electrically couple to memory cells in the second subarray.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 29, 2017
    Inventors: Sahil Preet Singh, Jung-Hsuan Chen, Yen-Huei Chen, Avinash Chander, Albert Ying
  • 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: 20170162232
    Abstract: A device includes a first strap cell, a first data line, and a second data line. The first strap cell is arranged between a first row of memory cells and a second row of memory cells in a memory array. A first portion of the first data line is configured to transmit data to or from a first memory cell in the first row of memory cells. The second data line and a second portion of the first data line are configured to transmit data to or from a second memory cell in the second row of memory cells.
    Type: Application
    Filed: February 21, 2017
    Publication date: June 8, 2017
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Jonathan Tsung-Yung CHANG, Cheng-Hung LEE, Chi-Ting CHENG, Hung-Jen LIAO, Jhon-Jhy LIAW, Yen-Huei CHEN
  • 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
  • Patent number: 9659620
    Abstract: An electronic device is disclosed that includes memory cells, a word line, a selection unit and a self-boosted driver. The memory cells are configured to store data. The word line is coupled to the memory cells. The selection unit is disposed at a first terminal of the word line, and is configured to transmit a selection signal to activate the word line according to one of a read command and a write command. The self-boosted driver is disposed at a second terminal of the word line, and is configured to pull up a voltage level of the word line according to a voltage level of the word line and a control signal.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: May 23, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Yen-Huei Chen, Hung-Jen Liao, Chih-Yu Lin, Jonathan Tsung-Yung Chang, Wei-Cheng Wu