摘要:
The present invention pertains to a system method of forming at least a portion of a dual bit memory core array upon a semiconductor substrate, the method comprising forming adjacent first memory cell process assemblies; comprising a charge trapping dielectric, a first polysilicon layer and defining a first bitline opening there between, forming first polysilicon layer features over the charge trapping dielectric layer, depositing a layer of second spacer material over the charge trapping dielectric and the first polysilicon layer features, forming a sidewall spacer adjacent to the charge trapping dielectric and the first polysilicon layer features to define a second bitline opening between the adjacent memory cells, performing a bitline implant, or pocket implants, or both into the bitline opening to establish buried bitlines within the substrate having respective bitline widths that are narrower than the respective widths of the first bitline openings, removing the sidewall spacers, and performing back end processing.
摘要:
A method of programming a memory cell in a non-volatile memory device includes applying a first voltage to a control gate associated with the memory cell and applying a second voltage to a drain region associated with the memory cell. The method also includes applying a positive bias to a source region associated with the memory cell and/or applying a negative bias to a substrate region associated with the memory cell.
摘要:
A method of forming a contact through a material includes forming a via through a dielectric material and cleaning the via using a dilute hydrofluoric (DHF) acid solution. The method further includes depositing a barrier layer within the via and depositing metal adjacent the barrier layer.
摘要:
In patterning a transistor, some of a layer of gate dielectric material is allowed to remain over a semiconductor substrate upon which the transistor is formed. This remaining dielectric material retards the implantation of dopants into the underlying substrate, effectively lengthening a channel region of the transistor. This mitigates unwanted short channel effects, such as leakage currents, for example, and thus mitigates yield loss by establishing a transistor that performs in a more predictable or otherwise desirable manner.
摘要:
The present invention pertains to a system method of forming at least a portion of a dual bit memory core array upon a semiconductor substrate, the method comprising forming adjacent first memory cell process assemblies; comprising a charge trapping dielectric, a first polysilicon layer and defining a first bitline opening there between, forming first polysilicon layer features over the charge trapping dielectric layer, depositing a layer of second spacer material over the charge trapping dielectric and the first polysilicon layer features, forming a sidewall spacer adjacent to the charge trapping dielectric and the first polysilicon layer features to define a second bitline opening between the adjacent memory cells, performing a bitline implant, or pocket implants, or both into the bitline opening to establish buried bitlines within the substrate having respective bitline widths that are narrower than the respective widths of the first bitline openings, removing the sidewall spacers, and performing back end processing.
摘要:
In patterning a transistor, some of a layer of gate dielectric material is allowed to remain over a semiconductor substrate upon which the transistor is formed. This remaining dielectric material retards the implantation of dopants into the underlying substrate, effectively lengthening a channel region of the transistor. This mitigates unwanted short channel effects, such as leakage currents, for example, and thus mitigates yield loss by establishing a transistor that performs in a more predictable or otherwise desirable manner.
摘要:
One embodiment of the present invention relates to a memory cell. The memory cell comprises a substrate and a stacked gate structure disposed on the substrate, wherein the stacked gate structure comprises a charge trapping dielectric layer that is adapted to store at least one bit of data. The memory cell further includes a source and drain in the substrate, wherein the source and drain are disposed at opposite sides of the stacked gate structure. A barrier region is disposed substantially beneath the source or the drain and comprises an inert species. Other embodiments are also disclosed.
摘要:
A method of forming implants for a memory cell includes forming an oxide-nitride-oxide (ONO) stack over a substrate and implanting first impurities in the substrate adjacent each side of the ONO stack using a first implantation energy and a first tilt angle to produce first pocket implants. The method further includes implanting second impurities in the substrate adjacent each side of the ONO stack using a second implantation energy and a second tilt angle to produce second pocket implants, where the second implantation energy is substantially larger than the first implantation energy and where the second tilt angle is substantially larger than the first tilt angle.
摘要:
A method of forming an electronic device including forming a first trench in a workpiece including a substrate, the first trench having side walls and a bottom surface extending for a width between the side walls and forming a charge-storage layer along the side walls and bottom surface of the first trench. The method further includes implanting ions within the substrate underlying the bottom surface of the first trench to form an implant region and annealing the implant region, wherein after annealing, the implant region extends the width of the bottom surface and along a portion of the side walls.
摘要:
One embodiment of the present invention relates to a memory cell. The memory cell comprises a substrate and a stacked gate structure disposed on the substrate, wherein the stacked gate structure comprises a charge trapping dielectric layer that is adapted to store at least one bit of data. The memory cell further includes a source and drain in the substrate, wherein the source and drain are disposed at opposite sides of the stacked gate structure. A barrier region is disposed substantially beneath the source or the drain and comprises an inert species. Other embodiments are also disclosed.