Abstract:
Field effect transistor (1) integrated on a semiconductor substrate (4) with a respective active area (8) comprising:
a region of source (2) and a region of drain (3) formed in the semiconductor substrate (4), a channel region (5) interposed between said regions of source (2) and of drain (3) having a predefined nominal width (W N ), wherein said channel region (5) has an effective width (Weff) defined by a variable profile of doping.
Abstract:
A circuit structure integrated in a semiconductor substrate (40) comprises at least one pair of transistors (20,21) being formed each in a respective active area region (30) and having a source region (22) and a drain region (23), as well as a channel region (24) intervening between the source and drain regions (22,23) and being overlaid by a gate region (25); the gate regions (25) are connected electrically together by an overlying conductive layer (28) and respective contacts (14) wherein the contacts (14) between the gate regions (24) and the conductive layer (28) are formed above the active areas (30).
Abstract:
A structure of electronic devices integrated in a semiconductor substrate with a first type of conductivity comprising at least a first HV transistor and at least a second LV transistor, each having a corresponding gate region. Said first HV transistor has lightly doped drain and source regions with a second type of conductivity, and said second LV transistor has respective drain and source regions with the second type of conductivity, each including a lightly doped portion adjacent to the respective gate region and a second portion which is more heavily doped and comprises a silicide layer.
Abstract:
The invention relates to a non-volatile memory cell and a manufacturing process therefor. The cell (1,10) is integrated in a semiconductor substrate (2) and comprises:
a floating gate transistor (3,30) having a first source region (17,170), first drain region (15,150), and gate region (5,50) projecting over the substrate (2) and intervening between the first source and drain regions (17,15;170,150); and a selection transistor (4,40) having a second source region (19,190), second drain region (20,200), and respective gate region (23,230), projecting over the substrate (2), between the second source and drain regions (19,20;190,200). The first and second regions are lightly doped and the cell comprises mask elements (31a, 310a).
Abstract:
A method for operating a flash memory device ( 100 ) is proposed. The memory device includes a matrix of memory cells ( 110 ) each one having a programmable threshold voltage (V T ) defining a value stored in the memory cell. The method includes the steps of crasing a block ( 115 ) of memory cells, and compacting the threshold voltages of the memory cells of the block within a predefined compacting range, wherein the step of compacting includes: selecting at least one first memory cell (110 0e ) of the block for writing a target value; restoring the threshold voltage of a subset (110 0e ; 110 1o ) of the memory cells of the block to the compacting range, the subset consisting of the at least one first memory cell (110 0e ) and/or at least one second memory cell of the block (110 1o ) being adjacent to the at least one first memory cell; and at least partially writing the target value into the at least one first memory cell.