Patents by Inventor Niladri Narayan MOJUMDER

Niladri Narayan MOJUMDER 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: 20190035796
    Abstract: An apparatus includes first means for routing current coupled to a bit cell. The apparatus includes third means for routing current. The third means for routing current includes a write word line coupled to the bit cell. The apparatus includes second means for routing current. The second means for routing current is between the first means for routing current and the third means for routing current. The second means for routing current includes two read word lines coupled to the bit cell.
    Type: Application
    Filed: October 3, 2018
    Publication date: January 31, 2019
    Inventors: Niladri Narayan Mojumder, Ritu Chaba, Ping Liu, Stanley Seungchul Song, Zhongze Wang, Choh Fei Yeap
  • Patent number: 10141317
    Abstract: An apparatus includes a first metal layer coupled to a bit cell. The apparatus also includes a third metal layer including a write word line that is coupled to the bit cell. The apparatus further includes a second metal layer between the first metal layer and the third metal layer. The second metal layer includes two read word lines coupled to the bit cell.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: November 27, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Niladri Narayan Mojumder, Ritu Chaba, Ping Liu, Stanley Seungchul Song, Zhongze Wang, Choh Fei Yeap
  • Patent number: 9876017
    Abstract: Static random access memory (SRAM) bit cells with wordline landing pads split across boundary edges of the SRAM bit cells are disclosed. In one aspect, an SRAM bit cell is disclosed employing write wordline in second metal layer, first read wordline in third metal layer, and second read wordline in fourth metal layer. Employing wordlines in separate metal layers allows wordlines to have wider widths, which decrease wordline resistance, decrease access time, and increase performance of SRAM bit cell. To employ wordlines in separate metal layers, multiple tracks in first metal layer are employed. To couple read wordlines to the tracks to communicate with SRAM bit cell transistors, landing pads are disposed on corresponding tracks inside and outside of a boundary edge of the SRAM bit cell. Landing pads corresponding to the write wordline are placed on corresponding tracks within the boundary edge of the SRAM bit cell.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: January 23, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Niladri Narayan Mojumder, Stanley Seungchul Song, Zhongze Wang, Kern Rim, Choh Fei Yeap
  • Patent number: 9812188
    Abstract: An apparatus includes a static random-access memory and circuitry configured to initiate a corrective action associated with the static random-access memory. The corrective action may be initiated based on a number of static random-access memory cells that have a particular state responsive to a power-up of the static random-access memory.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: November 7, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Niladri Narayan Mojumder, Zhongze Wang, Xiaonan Chen, Stanley Seungchul Song, Choh Fei Yeap
  • Patent number: 9806083
    Abstract: Static random access memory (SRAM) bit cells with wordlines on separate metal layers for increased performance are disclosed. In one aspect, an SRAM bit cell is disclosed employing a write wordline in a second metal layer, a first read wordline in a third metal layer, and a second read wordline in a fourth metal layer. Employing wordlines in separate metal layers allows wordlines to have increased widths, which decrease wordline resistance, decrease access time, and increase performance of the SRAM bit cell. To employ wordlines in separate metal layers, multiple tracks in a first metal layer are employed. To couple read wordlines to the tracks to communicate with SRAM bit cell transistors, landing pads are disposed on corresponding tracks disposed in the first metal layer. Landing pads corresponding to the write wordline are placed on corresponding tracks disposed in the first metal layer.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: October 31, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Niladri Narayan Mojumder, Stanley Seungchul Song, Zhongze Wang, Kern Rim, Choh Fei Yeap
  • Patent number: 9799560
    Abstract: A fin-type semiconductor device includes a gate structure and a source/drain structure. The fin-type semiconductor device also includes a gate hardmask structure coupled to the gate structure. The gate hardmask structure comprises a first material. The fin-type semiconductor device further includes a source/drain hardmask structure coupled to the source/drain structure. The source/drain hardmask structure comprises a second material.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: October 24, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Stanley Seungchul Song, Jeffrey Junhao Xu, Kern Rim, Da Yang, John Jianhong Zhu, Junjing Bao, Niladri Narayan Mojumder, Vladimir Machkaoutsan, Mustafa Badaroglu, Choh Fei Yeap
  • Patent number: 9786356
    Abstract: A method of operation of a memory device includes, for each operating frequency of multiple operating frequencies, determining a target voltage level of a supply voltage. For example, a first target voltage level for a first operating frequency of the multiple operating frequencies is determined. The method includes accessing first data from the memory device while the memory device is operating at the first operating frequency and is powered by the supply voltage having a first voltage level. The method includes determining a first number of errors associated with the first data. The method further includes, in response to the first number of errors satisfying a threshold, adjusting the supply voltage to a second voltage level that is greater than the first voltage level.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: October 10, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Zhongze Wang, Niladri Narayan Mojumder, Jonathan Liu, Choh Fei Yeap
  • Patent number: 9721891
    Abstract: An integrated circuit device includes a first metal layer including aluminum. The integrated circuit device includes a second metal layer including an interconnect structure. The interconnect structure includes a layer of first material including aluminum. The integrated circuit device includes an inter-diffusion layer that includes aluminum. The inter-diffusion layer is proximate to the first metal layer and proximate to the layer of first material including aluminum. The integrated circuit device includes an aluminum oxide barrier layer. The aluminum oxide barrier layer is proximate to a dielectric layer and proximate to the layer of first material including aluminum.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: August 1, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Jeffrey Junhao Xu, Junjing Bao, John Jianhong Zhu, Stanley Seungchul Song, Niladri Narayan Mojumder, Choh Fei Yeap
  • Patent number: 9660649
    Abstract: A method for scaling voltages provided to different modules of a system-on-chip (SOC) includes receiving, at an energy-performance engine of the SOC, a first indication of usage history for a first module of the SOC and a second indication of usage history for a second module of the SOC. The method includes receiving a battery life indication that indicates a remaining battery life for a battery of the SOC. The method also includes adjusting a first supply voltage provided to the first module of the SOC based on the first indication, the second indication, and the battery life indication. The method further includes adjusting a second supply voltage provided to the second module of the SOC based on the first indication, the second indication, and the battery life indication.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: May 23, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Niladri Narayan Mojumder, Stanley Seungchul Song, Kern Rim, Choh Fei Yeap
  • Publication number: 20170092587
    Abstract: An integrated circuit device includes a first metal layer including aluminum. The integrated circuit device includes a second metal layer including an interconnect structure. The interconnect structure includes a layer of first material including aluminum. The integrated circuit device includes an inter-diffusion layer that includes aluminum. The inter-diffusion layer is proximate to the first metal layer and proximate to the layer of first material including aluminum. The integrated circuit device includes an aluminum oxide barrier layer. The aluminum oxide barrier layer is proximate to a dielectric layer and proximate to the layer of first material including aluminum.
    Type: Application
    Filed: December 14, 2016
    Publication date: March 30, 2017
    Inventors: Jeffrey Junhao Xu, Junjing Bao, John Jianhong Zhu, Stanley Seungchul Song, Niladri Narayan Mojumder, Choh Fei Yeap
  • Publication number: 20170062439
    Abstract: An apparatus includes a first metal layer coupled to a bit cell. The apparatus also includes a third metal layer including a write word line that is coupled to the bit cell. The apparatus further includes a second metal layer between the first metal layer and the third metal layer. The second metal layer includes two read word lines coupled to the bit cell.
    Type: Application
    Filed: November 9, 2016
    Publication date: March 2, 2017
    Inventors: Niladri Narayan Mojumder, Ritu Chaba, Ping Liu, Stanley Seungchul Song, Zhongze Wang, Choh Fei Yeap
  • Patent number: 9543248
    Abstract: An integrated circuit device includes a first metal layer including aluminum. The integrated circuit device includes a second metal layer including an interconnect structure. The interconnect structure includes a layer of first material including aluminum. The integrated circuit device includes an inter-diffusion layer that includes aluminum. The inter-diffusion layer is proximate to the first metal layer and proximate to the layer of first material including aluminum. The integrated circuit device includes a self-forming barrier layer that includes aluminum. The self-forming barrier layer is proximate to a dielectric layer and proximate to the layer of first material including aluminum.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: January 10, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Jeffrey Junhao Xu, Junjing Bao, John Jianhong Zhu, Stanley Seungchul Song, Niladri Narayan Mojumder, Choh Fei Yeap
  • Patent number: 9542518
    Abstract: A method for designing a system-on-chip (SOC) for a wireless device includes receiving, at a design processor, first usage conditions for a first module of the SOC and second usage conditions for a second module of the SOC. The method further includes determining design parameters for the SOC. The design parameters are determined based on the first usage conditions and the second usage conditions.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: January 10, 2017
    Assignee: Qualcomm Incorporated
    Inventors: Niladri Narayan Mojumder, Stanley Seungchul Song, Kern Rim, Choh Fei Yeap
  • Patent number: 9536596
    Abstract: An apparatus includes a first read port, a second read port, a write port, and at least one storage latch. A width of a bit cell that includes the first read port, the second read port, and the write port is greater than twice a contacted poly pitch (CPP) associated with the bit cell. For example, a bit cell may be a 3-port static random access memory (SRAM) bit cell that is compatible with self-aligned double patterning (SADP) processes and that can be manufactured using semiconductor manufacturing processes of less than 14 nanometers (nm).
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: January 3, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Niladri Narayan Mojumder, Stanley Seungchul Song, Zhongze Wang, Choh Fei Yeap
  • Patent number: 9524972
    Abstract: An apparatus includes a first metal layer coupled to a bit cell. The apparatus also includes a third metal layer including a write word line that is coupled to the bit cell. The apparatus further includes a second metal layer between the first metal layer and the third metal layer. The second metal layer includes two read word lines coupled to the bit cell.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: December 20, 2016
    Assignee: Qualcomm Incorporated
    Inventors: Niladri Narayan Mojumder, Ritu Chaba, Ping Liu, Stanley Seungchul Song, Zhongze Wang, Choh Fei Yeap
  • Publication number: 20160293485
    Abstract: A fin-type semiconductor device includes a gate structure and a source/drain structure. The fin-type semiconductor device also includes a gate hardmask structure coupled to the gate structure. The gate hardmask structure comprises a first material. The fin-type semiconductor device further includes a source/drain hardmask structure coupled to the source/drain structure. The source/drain hardmask structure comprises a second material.
    Type: Application
    Filed: September 14, 2015
    Publication date: October 6, 2016
    Inventors: Stanley Seungchul Song, Jeffrey Junhao Xu, Kern Rim, Da Yang, John Jianhong Zhu, Junjing Bao, Niladri Narayan Mojumder, Vladimir Machkaoutsan, Mustafa Badaroglu, Choh Fei Yeap
  • Patent number: 9455026
    Abstract: An apparatus includes an array of bit cells that include a first row of bit cells and a second row of bit cells. The apparatus also includes a first global read word line configured to be selectively coupled to the first row of bit cells and to the second row of bit cells. The apparatus further includes a second global read word line configured to be selectively coupled to the first row of bit cells and to the second row of bit cells. The apparatus also includes a global write word line configured to be selectively coupled to the first row of bit cells and to the second row of bit cells. The first global read word line, the second global read word line, and the global write word line are located in a common metal layer.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: September 27, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Niladri Narayan Mojumder, Stanley Seungchul Song, Zhongze Wang, Ping Liu, Kern Rim, Choh Fei Yeap
  • Patent number: 9449709
    Abstract: A volatile and one-time program (OTP) compatible asymmetric memory cell may include a first pull-up transistor having a first threshold voltage. The asymmetric memory cell may also include a second pull-up transistor having a second threshold voltage that differs from the first threshold voltage. The asymmetric memory cell may further include a switch coupled to a well of the first pull-up transistor and the second pull-up transistor to alternate between a program voltage (Vpg) and a power supply voltage. The asymmetric memory cell may also include a peripheral switching circuit to control programming of the asymmetric memory cell.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: September 20, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Xia Li, Xiaonan Chen, Niladri Narayan Mojumder, Zhongze Wang, Weidan Li
  • Publication number: 20160247554
    Abstract: An apparatus includes a static random-access memory and circuitry configured to initiate a corrective action associated with the static random-access memory. The corrective action may be initiated based on a number of static random-access memory cells that have a particular state responsive to a power-up of the static random-access memory.
    Type: Application
    Filed: February 25, 2015
    Publication date: August 25, 2016
    Inventors: Niladri Narayan Mojumder, Zhongze Wang, Xiaonan Chen, Stanley Seungchul Song, Choh Fei Yeap
  • Patent number: 9424909
    Abstract: Aspects disclosed include static random access memory (SRAM) arrays having substantially constant operational yields across multiple modes of operation. In one aspect, a method of designing SRAM arrays with multiple modes operation is provided. The method includes determining performance characteristics associated with each mode of operation. SRAM bit cells configured to operate in each mode of operation are provided to the SRAM array. SRAM bit cells are biased to operate in a mode of operation using dynamic adaptive assist techniques, wherein the SRAM bit cells achieve a substantially constant operational yield across the modes. The SRAM bit cells have a corresponding type, wherein the number of SRAM bit cell types in the method is less than the number of modes of operation. Thus, each SRAM array may achieve a particular mode of operation without requiring a separate SRAM bit cell type for each mode, thereby reducing costs.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: August 23, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Niladri Narayan Mojumder, Ping Liu, Stanley Seungchul Song, Zhongze Wang, Choh Fei Yeap