Inventor · disambiguated record
Zhizheng Liu
Also filed as: LIU ZHIZHENG
50 granted patents·5 pending applications·820 citations·filing 2001–2024
98Inventor score
Files withSPANSION LLC29ADVANCED MICRO DEVICES INC12CHUNG SUNG-YONG2ADVANCE MICRO DEVICES INC1DELTA ELECTRONICS INC1
Top patents by PatentIndex Score
55 records- 0196US7042766B1Method of programming a flash memory device using multilevel charge storageSPANSION LLC·Filed 2004·Granted May 9, 2006·128 cites·9 claims
- 0294US7619932B2Algorithm for charge loss reduction and Vt distribution improvementSPANSION LLC·Filed 2007·Granted Nov 17, 2009·42 cites·25 claims
- 0394US6639844B1Overerase correction methodADVANCED MICRO DEVICES INC·Filed 2002·Granted Oct 28, 2003·84 cites·3 claims
- 0493US6834012B1Memory device and methods of using negative gate stress to correct over-erased memory cellsADVANCED MICRO DEVICES INC·Filed 2004·Granted Dec 21, 2004·74 cites·23 claims
- 0591US7120063B1Flash memory cell and methods for programming and erasingSPANSION LLC·Filed 2004·Granted Oct 10, 2006·52 cites·25 claims
- 0689US7285827B1Back-to-back NPN/PNP protection diodesSPANSION LLC·Filed 2005·Granted Oct 23, 2007·14 cites·16 claims
- 0788US6768160B1Non-volatile memory cell and method of programming for improved data retentionADVANCED MICRO DEVICES INC·Filed 2003·Granted Jul 27, 2004·52 cites·20 claims
- 0886US8264165B2Method and system for dimming an offline LED driverGU WEI·Filed 2009·Granted Sep 11, 2012·13 cites·17 claims
- 0985US7394702B2Methods for erasing and programming memory devicesSPANSION LLC·Filed 2006·Granted Jul 1, 2008·12 cites·19 claims
- 1085US6967873B2Memory device and method using positive gate stress to recover overerased cellADVANCED MICRO DEVICES INC·Filed 2003·Granted Nov 22, 2005·41 cites·20 claims
- 1185US6797565B1Methods for fabricating and planarizing dual poly scalable SONOS flash memoryADVANCED MICRO DEVICES INC·Filed 2002·Granted Sep 28, 2004·28 cites·22 claims
- 1283US7679967B2Controlling AC disturbance while programmingSPANSION LLC·Filed 2007·Granted Mar 16, 2010·10 cites·23 claims
- 1383US6934190B1Ramp source hot-hole programming for trap based non-volatile memory devicesADVANCED MICRO DEVICES INC·Filed 2004·Granted Aug 23, 2005·31 cites·26 claims
- 1481US6795357B1Method for reading a non-volatile memory cellADVANCE MICRO DEVICES INC·Filed 2002·Granted Sep 21, 2004·31 cites·20 claims
- 1581US6795342B1System for programming a non-volatile memory cellADVANCED MICRO DEVICES INC·Filed 2002·Granted Sep 21, 2004·30 cites·20 claims
- 1680US7215577B2Flash memory cell and methods for programming and erasingSPANSION LLC·Filed 2006·Granted May 8, 2007·7 cites·16 claims
- 1779US6869844B1Method and structure for protecting NROM devices from induced charge damage during device fabricationADVANCED MICRO DEVICES INC·Filed 2003·Granted Mar 22, 2005·23 cites·20 claims
- 1876US7750407B2Strapping contact for charge protectionSPANSION LLC·Filed 2006·Granted Jul 6, 2010·4 cites·20 claims
- 1974US6897110B1Method of protecting a memory array from charge damage during fabricationADVANCED MICRO DEVICES INC·Filed 2002·Granted May 24, 2005·22 cites·19 claims
- 2070US7561457B2Select transistor using buried bit line from coreSPANSION LLC·Filed 2006·Granted Jul 14, 2009·4 cites·17 claims
- 2168US7746698B2Programming in memory devices using source bitline voltage biasSPANSION LLC·Filed 2007·Granted Jun 29, 2010·7 cites·20 claims
- 2268US7167398B1System and method for erasing a memory cellSPANSION L L C·Filed 2005·Granted Jan 23, 2007·4 cites·17 claims
- 2368US6628545B1Memory circuit for suppressing bit line current leakageADVANCED MICRO DEVICES INC·Filed 2002·Granted Sep 30, 2003·16 cites·20 claims
- 2466US7432688B2Soft-transition controller of a synchronous converterLINEAGE POWER CORP·Filed 2006·Granted Oct 7, 2008·8 cites·24 claims
- 2565US7977218B2Thin oxide dummy tiling as charge protectionSPANSION LLC·Filed 2006·Granted Jul 12, 2011·3 cites·20 claims
- 2665US7952938B2Selective application of word line bias to minimize fringe effects in electromagnetic fields during erase of nonvolatile memorySPANSION LLC·Filed 2010·Granted May 31, 2011·3 cites·20 claims
- 2765US6788583B2Pre-charge method for reading a non-volatile memory cellADVANCED MICRO DEVICES INC·Filed 2002·Granted Sep 7, 2004·14 cites·19 claims
- 2864US7804125B2System and method for reducing process-induced chargingSPANSION LLC·Filed 2007·Granted Sep 28, 2010·2 cites·20 claims
- 2963US8264898B2Controlling AC disturbance while programmingCHUNG SUNG-YONG·Filed 2011·Granted Sep 11, 2012·2 cites·20 claims
- 3063US7262095B1System and method for reducing process-induced chargingSPANSION LLC·Filed 2005·Granted Aug 28, 2007·2 cites·18 claims
- 3163US6469915B2Resonant reset dual switch forward DC-to-DC converterDELTA ELECTRONICS INC·Filed 2001·Granted Oct 22, 2002·17 cites·10 claims
- 3262US7553727B2Using implanted poly-1 to improve charging protection in dual-poly processSPANSION LLC·Filed 2007·Granted Jun 30, 2009·2 cites·15 claims
- 3360US6906959B2Method and system for erasing a nitride memory deviceADVANCED MICRO DEVICES INC·Filed 2002·Granted Jun 14, 2005·9 cites·8 claims
- 3459US7944746B2Room temperature drift suppression via soft program after eraseSPANSION LLC·Filed 2007·Granted May 17, 2011·6 cites·25 claims
- 3559US7746705B2Selective application of word line bias to minimize fringe effects in electromagnetic fields during erase of nonvolatile memorySPANSION LLC·Filed 2007·Granted Jun 29, 2010·4 cites·13 claims
- 3659US7042767B2Flash memory unit and method of programming a flash memory deviceSPANSION LLC·Filed 2004·Granted May 9, 2006·10 cites·9 claims
- 3757US7986562B2Controlling AC disturbance while programmingSPANSION LLC·Filed 2009·Granted Jul 26, 2011·2 cites·12 claims
- 3857US2025370858A1Non-volatile memory metadata protectionInfineon Technologies LLC·Filed 2024·Application pending·0 cites
- 3956US7626869B2Multi-phase wordline erasing for flash memorySPANSION LLC·Filed 2007·Granted Dec 1, 2009·3 cites·20 claims
- 4056US7269067B2Programming a memory deviceSPANSION LLC·Filed 2005·Granted Sep 11, 2007·1 cites·19 claims
- 4151US7995386B2Applying negative gate voltage to wordlines adjacent to wordline associated with read or verify to reduce adjacent wordline disturbSPANSION LLC·Filed 2008·Granted Aug 9, 2011·2 cites·20 claims
- 4250US8995198B1Multi-pass soft programmingSPANSION LLC·Filed 2013·Granted Mar 31, 2015·1 cites·20 claims
- 4350US7573103B1Back-to-back NPN/PNP protection diodesSPANSION LLC·Filed 2007·Granted Aug 11, 2009·0 cites·19 claims
- 4450US2024080977A1Inductor with integrated conductors for power modulesRENESAS ELECTRONICS AMERICA INC·Filed 2023·Application pending·0 cites
- 4547US8404541B2Strapping contact for charge protectionZHENG WEI·Filed 2010·Granted Mar 26, 2013·0 cites·20 claims
- 4645US9171936B2Barrier region underlying source/drain regions for dual-bit memory devicesSINHA SHANKAR·Filed 2006·Granted Oct 27, 2015·0 cites·14 claims
- 4743US9153596B2Adjacent wordline disturb reduction using boron/indium implantKATHAWALA GULZAR A·Filed 2009·Granted Oct 6, 2015·0 cites·20 claims
- 4843US8559255B2Controlling AC disturbance while programmingCHUNG SUNG-YONG·Filed 2012·Granted Oct 15, 2013·0 cites·20 claims
- 4943US7888218B2Using thick spacer for bitline implant then removeSPANSION LLC·Filed 2007·Granted Feb 15, 2011·0 cites·13 claims
- 5043US7671405B2Deep bitline implant to avoid program disturbSPANSION LLC·Filed 2006·Granted Mar 2, 2010·0 cites·22 claims
Showing the top 50 of 55 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →