Patents by Inventor Venkat Ananthan

Venkat Ananthan 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: 20140264252
    Abstract: Selector devices that can be suitable for memory device applications can have low leakage currents at low voltages to reduce sneak current paths for non selected devices, and high leakage currents at high voltages to minimize voltage drops during device switching. In some embodiments, the selector device can include a first electrode, a tri-layer dielectric layer, and a second electrode. The tri-layer dielectric layer can include a high leakage dielectric layer sandwiched between two lower leakage dielectric layers. The low leakage layers can function to restrict the current flow across the selector device at low voltages. The high leakage dielectric layer can function to enhance the current flow across the selector device at high voltages.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 18, 2014
    Applicant: Intermolecular, Inc.
    Inventors: Imran Hashim, Venkat Ananthan, Tony P. Chiang, Prashant B. Phatak
  • Publication number: 20140183439
    Abstract: Selector devices that can be suitable for memory device applications can have low leakage currents at low voltages to reduce sneak current paths for non selected devices, and high leakage currents at high voltages to minimize voltage drops during device switching. In some embodiments, the selector device can include a first electrode, a tri-layer dielectric layer, and a second electrode. The tri-layer dielectric layer can include a high leakage dielectric layer sandwiched between two lower leakage dielectric layers. The low leakage layers can function to restrict the current flow across the selector device at low voltages. The high leakage dielectric layer can function to enhance the current flow across the selector device at high voltages.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 3, 2014
    Applicant: Intermolecular, Inc.
    Inventors: Imran Hashim, Venkat Ananthan, Tony P. Chiang, Prashant B. Phatak
  • Patent number: 8766234
    Abstract: Selector devices that can be suitable for memory device applications can have low leakage currents at low voltages to reduce sneak current paths for non selected devices, and high leakage currents at high voltages to minimize voltage drops during device switching. In some embodiments, the selector device can include a first electrode, a tri-layer dielectric layer, and a second electrode. The tri-layer dielectric layer can include a high leakage dielectric layer sandwiched between two lower leakage dielectric layers. The low leakage layers can function to restrict the current flow across the selector device at low voltages. The high leakage dielectric layer can function to enhance the current flow across the selector device at high voltages.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: July 1, 2014
    Assignee: Intermolecular, Inc.
    Inventors: Imran Hashim, Venkat Ananthan, Tony P. Chiang, Prashant B. Phatak
  • Publication number: 20140175603
    Abstract: MIMCAP devices are provided that can be suitable for memory device applications, such as current selector devices for cross point memory array. The MIMCAP devices can have lower thermal budget as compared to Schottky diodes and controllable lower barrier height and lower series resistance as compared to MIMCAP tunneling diodes. The MIMCAP diode can include a low defect dielectric layer, a high defect dielectric layer, sandwiched between two electrodes having different work function values.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: INTERMOLECULAR, INC.
    Inventors: Venkat Ananthan, Imran Hashim, Prashant B. Phatak
  • Publication number: 20140141534
    Abstract: A combination of deposition processes can be used to evaluate layer properties using a combinatorial workflow. The processes can include a base ALD process and another process, such as a PVD process. The high productivity combinatorial technique can provide an evaluation of the material properties for given ALD base layer and PVD additional elements. An ALD process can then be developed to provide the desired layers, replacing the ALD and PVD combination.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 22, 2014
    Applicant: INTERMOLECULAR INC.
    Inventors: Prashant B. Phatak, Venkat Ananthan, Wayne R. French
  • Patent number: 8716115
    Abstract: Dual shadow mask design can overcome the size and resolution limitations of shadow masks to provide capacitor structures with small effective areas. The capacitor structures have bottom and top electrode layers patterned using shadow masks, sandwiching a dielectric layer. The effective areas of the capacitors are the overlapping areas of the top and bottom electrodes, thus allowing small area sizes without subjected to the size limitation of the electrodes. The dual shadow mask design can be used in conjunction with high productivity combinatorial processes for screening and optimizing dielectric materials and fabrication processes.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: May 6, 2014
    Assignee: Intermolecular, Inc.
    Inventors: Venkat Ananthan, Prashant B. Phatak
  • Publication number: 20140080233
    Abstract: The embodiments describe methods and apparatuses for combinatorial optimization of interlayer parameters for capacitor stacks. The capacitor stacks may include a substrate, an insulating layer disposed on the substrate, a ruthenium disposed electrode on the insulating layer, and an interlayer disposed on the ruthenium electrode, where the interlayer is configured to prevent etching of the electrode when growing a high-k dielectric using an ozone-based precursor. The parameters for forming the interlayer may include interlayer thickness, precursor chemistry, oxidant strength, precursor purge times, oxidant purge times, and other suitable parameters. Each of these parameters may be evaluated through deposition of the capacitor stacks through a combinatorial optimization process. Thus, a plurality of different parameters may be evaluated with a single substrate to ascertain associated properties of Ruthenium electrode etching in a combinatorial manner.
    Type: Application
    Filed: September 19, 2012
    Publication date: March 20, 2014
    Applicant: Intermolecular, Inc.
    Inventor: Venkat Ananthan
  • Publication number: 20130093049
    Abstract: Dual shadow mask design can overcome the size and resolution limitations of shadow masks to provide capacitor structures with small effective areas. The capacitor structures have bottom and top electrode layers patterned using shadow masks, sandwiching a dielectric layer. The effective areas of the capacitors are the overlapping areas of the top and bottom electrodes, thus allowing small area sizes without subjected to the size limitation of the electrodes. The dual shadow mask design can be used in conjunction with high productivity combinatorial processes for screening and optimizing dielectric materials and fabrication processes.
    Type: Application
    Filed: October 18, 2011
    Publication date: April 18, 2013
    Applicant: INTERMOLECULAR, INC.
    Inventors: Venkat Ananthan, Prashant B. Phatak
  • Publication number: 20080277738
    Abstract: Some embodiments include memory cells containing vertical floating bodies, and containing gates which entirely laterally surround the floating bodies. Some embodiments include memory banks which contain multiple memory cells extending from a conductively-doped diffusion region. Some embodiments include memory arrays in which electrically insulative partitions extend through a conductively-doped diffusion region to divide the diffusion region into a plurality of lines, and in which multiple memory cells extend vertically upward from each of such lines. Some embodiments include electronic systems containing processors in data communication with memory, and in which the memory includes an array of zero capacitor one transistor memory cells. Some embodiments include methods of forming vertically-extending memory cells. Some embodiments include methods of forming of banks of memory cells in which all of the memory cells extend to a conductively-doped region.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 13, 2008
    Inventor: Venkat Ananthan