Unipolar Device (epo) Patents (Class 257/E29.226)
E Subclasses
- Using static field induced region (e.g., SIT, PBT) (EPO) (Class 257/E29.243)
- Velocity modulations transistor (i.e., VMT) (EPO) (Class 257/E29.244)
- With one-dimensional charge carrier gas channel (e.g., quantum wire FET) (EPO) (Class 257/E29.245)
- With two-dimensional charge carrier gas channel (e.g., HEMT; with two-dimensional charge-carrier layer formed at heterojunction interface) (EPO) (Class 257/E29.246)
- With inverted single heterostructure (i.e., with active layer formed on top of wide bandgap layer (e.g., IHEMT)) (EPO) (Class 257/E29.247)
- With confinement of carriers by at least two heterojunctions (e.g., DHHEMT, quantum well HEMT, DHMODFET) (EPO) (Class 257/E29.248)
- With direct single heterostructure (i.e., with wide bandgap layer formed on top of active layer (e.g., direct single heterostructure MIS-like HEMT)) (EPO) (Class 257/E29.252)
- With delta-doped channel (EPO) (Class 257/E29.254)
- With field effect produced by insulated gate (EPO) (Class 257/E29.255)
- With channel containing layer contacting drain drift region (e.g., DMOS transistor) (EPO) (Class 257/E29.256)
- Vertical transistor (EPO) (Class 257/E29.262)
- Comprising gate-to-body connection (i.e., bulk dynamic threshold voltage MOSFET) (EPO) (Class 257/E29.263)
- With multiple gate structure (EPO) (Class 257/E29.264)
- With lightly doped drain or source extension (EPO) (Class 257/E29.266)
- With buried channel (EPO) (Class 257/E29.27)
- With Schottky drain or source contact (EPO) (Class 257/E29.271)
- Gate comprising ferroelectric layer (EPO) (Class 257/E29.272)
- Thin-film transistor (EPO) (Class 257/E29.273)
- Vertical transistor (EPO) (Class 257/E29.274)
- With multiple gates (EPO) (Class 257/E29.275)
- With supplementary region or layer in thin film or in insulated bulk substrate supporting it for controlling or increasing voltage resistance of device (EPO) (Class 257/E29.276)
- Characterized by drain or source properties (EPO) (Class 257/E29.277)
- For preventing leakage current (EPO) (Class 257/E29.28)
- For preventing kink or snapback effect (e.g., discharging minority carriers of channel region for preventing bipolar effect) (EPO) (Class 257/E29.281)
- With light shield (EPO) (Class 257/E29.282)
- With supplementary region or layer for improving flatness of device (EPO) (Class 257/E29.283)
- With drain or source connected to bulk conducting substrate (EPO) (Class 257/E29.284)
- Silicon transistor (EPO) (Class 257/E29.285)
- Characterized by insulating substrate or support (EPO) (Class 257/E29.295)
- Comprising Group III-V or II-VI compound, or of Se, Te, or oxide semiconductor (EPO) (Class 257/E29.296)
- Comprising Group IV non-Si semiconductor materials or alloys (e.g., Ge, SiN alloy, SiC alloy) (EPO) (Class 257/E29.297)
- Characterized by property or structure of channel or contact thereto (EPO) (Class 257/E29.299)
- With floating gate (EPO) (Class 257/E29.3)
- With charge trapping gate insulator (e.g., MNOS-memory transistors) (EPO) (Class 257/E29.309)
- With field effect produced by PN or other rectifying junction gate (i.e., potential barrier) (EPO) (Class 257/E29.31)
- With Schottky drain or source contact (EPO) (Class 257/E29.311)
- With PN junction gate (e.g., PN homojunction gate) (EPO) (Class 257/E29.312)
- With heterojunction gate (e.g., transistors with semiconductor layer acting as gate insulating layer) (EPO) (Class 257/E29.315)
- With Schottky gate (EPO) (Class 257/E29.317)