| ReturnTo Theme-Group-Choice | Onelevelup |
| 5F101 | Non-volatile memory | |
| H10D30/01 ,501;30/68-30/69 | ||
| H01L29/78,371 | BA | BA00 ELECTRIC CHARGE ACCUMULATION MECHANISM |
BA01 | BA02 | BA03 | BA04 | BA05 | BA06 | BA07 | BA08 | ||
| . FG types | . . Arrangement of FG | . . . Overlapping with SD, see BB13 | . . . Partial overlapping on CH, see BB04 | . . . On fields | . . . Overlapping with other gates | . . . . Overlapping with CG | . . . . Injection gates (erasing and writing gates) | |||||
| BA12 | BA13 | BA14 | BA15 | BA16 | BA17 | BA18 | BA19 | |||||
| . . Shape and structure of FG | . . . Embedded FG/grooves, see BD30 | . . . CG side wall, see BH14 | . . . Protrusions of FG, see BC03 | . . . Multiple FG (In a single memory cell) | . . . FG connection | . . . PN junctions (In FG) | . . FG materials (Excluding polycrystals) | |||||
| BA22 | BA23 | BA24 | BA26 | BA27 | BA28 | BA29 | ||||||
| . . FG peripheral insulation films | . . . Insulation film thickness | . . . . Partial making of thin film, see BA33-7 | . . . Insulation film material, see BA33-BA37 | . . . . Silicon-rich SiO2 film, see BA33-BA37 | . . . . Impurity doping, see BA33-BA37 | . . . . Containing nitride film, see BA33-BA37 | ||||||
| BA33 | BA34 | BA35 | BA36 | BA37 | BA40 | |||||||
| . . . Thin film making or characteristic sections of insulation film materials | . . . . Between SD and FG | . . . . Between CH and FG | . . . . Between CG and FG | . . . . Between injection gates and FG | . . Using superconductors | |||||||
| BA41 | BA42 | BA43 | BA44 | BA45 | BA46 | BA47 | BA48 | BA49 | ||||
| . Trap accumulation types | . . Insulation film materials* | . . . Single-layered insulation films | . . . . Oxide films, refer to BH10 | . . . Including nitride films* | . . . . MNOS types | . . . Containing alumina* | . . . Containing impurities, see BH10 | . . . Band gaps and inclined structures | ||||
| BA52 | BA53 | BA54 | ||||||||||
| . . Trap levels, see BB04 | . . Insulation film thickness | . . Clusters | ||||||||||
| BA61 | BA62 | BA63 | BA64 | BA65 | BA66 | BA68 | ||||||
| . Other memory operations* | . . Ferroelectrics | . . Amorphous | . . Electron gases and hetero junctions, see BD40 | . . Semi-insulating material, see BD40 | . . Superlattices, see BD40 | . . Magnetic substances | ||||||
| BB | BB00 CONTROL |
BB01 | BB02 | BB03 | BB04 | BB05 | BB06 | BB08 | BB09 | BB10 | ||
| . Control devices | . . With CG | . . . Multiple gates (Except FG) | . . . Offset gates, see BD22 | . . . Stacked gates (Identical end parts), see BH19 | . . . Diffusion control regions | . . CG materials (Other than polycrystals) | . . Injection gates, erasing and writing gates | . . . Injection gate arrangement | ||||
| BB12 | BB13 | BB15 | BB17 | BB20 | ||||||||
| . . Without control gates | . . . Control by capacitance between SD and FG | . . Control by CH and wells | . Capacitance analysis | . Others* | ||||||||
| BC | BC00 ELECTRIC CHARGE INJECTIONS |
BC01 | BC02 | BC03 | BC04 | BC05 | BC06 | BC07 | BC08 | BC09 | BC10 | |
| . Tunnel injections | . . Fowler Nordheim Tunnel injection | . . Protrusions and electric field concentration, see BA15 | . Avalanche injections | . . Source drain junction breakdown | . Formation of high impurity concentration parts (of electric charge injection parts) | . Injection area formation | . . PN diodes | . . Poly-diodes | . . Injector, see BA26 and thereafter | |||
| BC11 | BC12 | BC13 | BC17 | BC18 | BC20 | |||||||
| . Channel injection | . . Inhomogeneous electric fields, see BA01 and thereafter | . . Carrier moving directions and elevated sections, see BD13 | . Optical writing, see BE08 | . Electron beam writing | . Others* | |||||||
| BD | BD00 ELEMENT STRUCTURES |
BD01 | BD02 | BD03 | BD04 | BD05 | BD06 | BD07 | BD09 | BD10 | ||
| . Memory cell (sensor) | . . MOS transistors | . . . SD regions | . . . . Flat-shaped S/D | . . . . Cross-sectional S/D | . . . . S/D depth | . . . . High voltage resistant structures, such as LDD (of memory cells), see BD27 | . . . . Impurity doping and distribution of impurity concentration (of SD) | . . . . Shared or switching source drains | ||||
| BD12 | BD13 | BD14 | BD15 | BD16 | BD17 | BD18 | BD19 | BD20 | ||||
| . . . Channel regions | . . . . Channel shapes | . . . . Channel doping, see BF01 | . . . . . Partial channel doping, see BF01 | . . . Vertical MOS | . . Sensors other than MOS transistors | . . . Bipolar transistors | . . . CCD | . . . Capacity and capacitors | ||||
| BD21 | BD22 | BD23 | BD24 | BD25 | BD26 | BD27 | BD29 | BD30 | ||||
| . Combinations | . . Address gate transistors, see BB04 | . . Transistors for writing and erasing | . . CMOS structures | . . BiCMOS structures | . . EDMOS | . . High voltage resistant transistors (of peripheral circuits), see BD07 | . SOS | . SOI, thin film transistors, and three-dimensional elements | ||||
| BD31 | BD32 | BD33 | BD34 | BD35 | BD36 | BD37 | BD38 | BD39 | BD40 | |||
| . Array | . . Dense array structures | . Cell arrangement and cell structures | . . AND gate and NAND gate structures | . Separation | . . Well | . . LOCOS | . . Guard rings, parasitic channel prevention and diffusion | . Substrate materials | . . Group 3-5 | |||
| BD41 | BD42 | BD43 | BD44 | BD45 | BD46 | BD47 | BD50 | |||||
| . Surface protection films | . . Transparent films | . . Shielding films | . . PSG | . . Nitride films | . . Metal films | . . Shield | . Others | |||||
| BE | BE00 PERIPHERAL TECHNOLOGY |
BE01 | BE02 | BE03 | BE05 | BE06 | BE07 | BE08 | BE10 | |||
| . Address circuits and decode circuits | . Read circuits and read methods | . . Dynamic read | . Write circuits and write methods | . Erasing | . . Electric erasing and erasing circuits | . . Optical erasing, see BC17 | . Containers | |||||
| BE11 | BE12 | BE13 | BE14 | BE17 | BE20 | |||||||
| . Power source circuits | . . Unipolar power sources | . . Single power sources | . . Boosting and booster circuits | . Protection | . Others* | |||||||
| BF | BF00 OPERATION |
BF01 | BF02 | BF03 | BF05 | BF07 | BF08 | BF09 | BF10 | |||
| . Properties, hysteresis and threshold value | . . Memory retention | . . Rewriting frequency for preventing deterioration | . Multi-bit memory | . Parasitic | . . Parasitic capacity | . . Leak and short-circuit prevention, see BD38 | . Others* | |||||
| BG | BG00 APPLICATION |
BG01 | BG02 | BG03 | BG04 | BG07 | BG08 | BG09 | BG10 | |||
| . Analog memory | . Variable resistance | . AD and DA conversion | . Load resistance | . Circuit switching, redundant circuits or the like | . Product information memory signatures | . Volatile memory backup | . Others* | |||||
| BH | BH00 MANUFACTURING METHODS |
BH01 | BH02 | BH03 | BH04 | BH05 | BH06 | BH07 | BH08 | BH09 | BH10 | |
| . Insulation film formation | . . CVD | . . Thermal oxidation | . . Tunnel insulation film formation | . . Nitride film formation | . . . Thermal nitridation | . Diffusion | . . Double diffusion | . Ion implantation | . . Trap formation by ion implantation | |||
| BH11 | BH12 | BH13 | BH14 | BH15 | BH16 | BH17 | BH18 | BH19 | ||||
| . Epitaxial | . . Molecular beam epitaxial, MOCVD, or the like | . Etching | . . Dry etching (Isotropic etching) | . . Wet etching (Anisotropic etching) | . Heat treatment | . Hydrogen treatment | . Vacuum treatment and pressure treatment | . Self alignment, see BB05 | ||||
| BH21 | BH23 | BH26 | BH30 | |||||||||
| . Simultaneous formation of peripheral elements, see BD21 | . Multilayer wiring technology | . Test aging | . Others* |