摘要:
The present invention provides a semiconductor storage device having: a first conductivity type region formed in a semiconductor layer; a second conductivity type region formed in the semiconductor layer in contact with the first conductivity type region; a memory functional element disposed on the semiconductor layer across the boundary of the first and second conductivity type regions; and an electrode provided in contact with the memory functional element and on the first conductivity type region via an insulation film, and a portable electronic apparatus comprising the semiconductor storage device. The present invention can fully cope with scale-down and high-integration by constituting a selectable memory cell substantially of one device.
摘要:
A semiconductor device having a two-layer well structure and a small margin required at the boundary of a well region and comprising a variable substrate-bias transistor and a DTMOS. Field-effect transistors (223) are fabricated on a P-type shallow well region (212). The depth of a shallow element-isolating region (214) over the P-type shallow well region (212) is less than the depth of the junction between an N-type deep well region (227) and the P-type shallow well region (212). Therefore the field-effect transistors (223) share the P-type shallow well region (212). The P-type shallow well regions (212) independently of each other are easily formed since they are isolated from each other by a deep element-isolating region (226) and the N-type deep well region (227).
摘要:
A semiconductor device (1910) comprises a semiconductor substrate (100) including an isolation region (101) and an active region (102); a gate electrode (104) formed on gate oxide film (103) over the active area (102) and including side walls covered at least in part by insulating film (105) of the gate electrode side wall; and a source region (106) and a drain region (106) provided across the gate electrode (104) with the insulating film (105) of the gate electrode side wall in between. At least any of the source region (106) and the drain region (106) includes a second face for engagement with contact wiring. The second face makes some angle with the first face (AA') and an angle of less than 80 degrees with the surface of the isolation region.
摘要:
A semiconductor device of low power consumption and high reliability with a DTMOS and a substrate bias variable transistor and a portable electronic apparatus comprising this semiconductor device. This device has three layer well regions (12, 14, 16; 13, 15, 16) on a semiconductor substrate (11) and is provided with DTMOSs (29, 30), and substrate bias variable transistors (27, 28) in shallow well regions (16, 17). A boundary which constitutes a PNP, an NPN, or an NPNP structure is provided with wide element isolating regions (181, 182, 183), but a narrow element isolating region (18) when both the well regions have the same conductivity type. Thus, a plurality of well regions of respective conductivity types provided with substrate bias variable transistors (27, 28) of the respective conductivity types are made electrically independent to reduce power consumption and to suppress latchup phenomenon.
摘要:
A semiconductor device comprising a DTMOS and a substrate variable-bias transistor and a portable electronic device both operable with reduced power consumption. N-type deep well regions (12) are formed in one P-type semiconductor substrate (11). The N-type deep well regions (12, 12) are electrically isolated by the P-type semiconductor substrate (11). Over the N-type deep well regions (12), a P-type deep well region (13) and a P-type shallow well region (15) are formed to fabricate an N-type substrate variable-bias transistor (26). Over the N-type deep well region (12), an N-type shallow well region (14) is formed to fabricate a P-type substrate variable-bias transistor (25). Further a P-type DTMOS (28) and an N-type DTMOD (27) are fabricated.