摘要:
A method of protecting a charge trapping dielectric flash memory cell from UV-induced charging, including fabricating a charge trapping dielectric flash memory cell in a semiconductor device; depositing over the charge trapping dielectric flash memory cell at least one UV-protective layer; forming at least one layer over the at least one UV-protective layer; and etching the at least one layer to form an opening therein with an etchant species selective to stop on a layer below the at least one UV-protective layer, wherein the UV-protective layer comprises a substantially UV-opaque material.
摘要:
The invention includes an apparatus and a method of manufacturing such apparatus using a damascene process. The method includes the step of patterning a layer disposed over a substrate to include a line and space pattern. The line and space pattern in the layer includes at least one space comprising a width dimension of a feature to be formed. The feature may be, e.g., a wordline(s)/gate electrode(s). Additionally, the sidewalls of the feature, e.g., the wordline(s)/gate electrode(s) include relatively smooth surfaces.
摘要:
A method of protecting a charge trapping dielectric flash memory cell from UV-induced charging, including fabricating a charge trapping dielectric flash memory cell in a semiconductor device; depositing and planarizing an interlevel dielectric layer over the charge trapping dielectric flash memory cell and depositing over the planarized interlevel dielectric layer at least one UV-protective layer, the UV-protective layer including a substantially UV-opaque material.
摘要:
A manufacturing method for a MirrorBit® Flash memory includes providing a semiconductor substrate and depositing a charge-trapping dielectric material. First and second bitlines are implanted and a wordline material is deposited. A hard mask material is deposited over the wordline material. The hard mask material is of a material having the characteristic of being deposited rather than grown. A photoresist material is deposited over the wordline material and is patterned to form a patterned hard mask. The patterned photoresist material is removed. The wordline material is processed using the patterned hard mask to form a wordline. The patterned hard mask material is removed.
摘要:
The invention is a semiconductor device and a method of forming the semiconductor device. The semiconductor device comprises a substrate; buried bitlines formed in the substrate narrower than achievable at a resolution limit of lithography; a doped region formed adjacent at least one of the buried bitlines; a charge trapping layer disposed over the substrate; and a conductive layer disposed over the charge trapping layer, wherein the doped region adjacent the least one of the buried bitlines inhibits a leakage current between the buried bitlines.
摘要:
A method for manufacturing a MirrorBit® Flash memory includes providing a semiconductor substrate and successively depositing a first insulating layer, a charge-trapping layer, and a second insulating layer. First and second bitlines are implanted and wordlines are formed before completing the memory. Spacers are formed between the wordlines and an inter-layer dielectric layer is formed over the wordlines. One or more of the second insulating layer, wordlines, spacers, and inter-layer dielectric layers are deuterated, replacing hydrogen bonds with deuterium, thus improving data retention and substantially reducing charge loss.
摘要:
A manufacturing method is provided for an integrated circuit memory with closely spaced wordlines formed by using hard mask extensions. A charge-trapping dielectric material is deposited over a semiconductor substrate and first and second bitlines are formed therein. A wordline material and a hard mask material are deposited over the wordline material. A photoresist material is deposited over the hard mask material and is processed to form a patterned photoresist material. The hard mask material is processed using the patterned photoresist material to form a patterned hard mask material. The patterned photoresist is then removed. A hard mask extension material is deposited over the wordline material and is processed to form a hard mask extension. The wordline material is processed using the patterned hard mask material and the hard mask extension to form a wordline, and the patterned hard mask material and the hard mask extension are then removed.
摘要:
A device and method for manufacturing thereof for a MirrorBit® Flash memory includes providing a semiconductor substrate and successively depositing a first insulating layer, a charge-trapping layer, and a second insulating layer. First and second bitlines are implanted and wordlines are formed before completing the memory. Spacers are formed between the wordlines and an inter-layer dielectric layer is formed over the wordlines. One or more of the second insulating layer, wordlines, spacers, and inter-layer dielectric layers are deuterated, replacing hydrogen bonds with deuterium, thus improving data retention and substantially reducing charge loss.
摘要:
A method of manufacturing for a MirrorBit® Flash memory includes depositing a charge-trapping material over a semiconductor substrate and implanting first and second bitlines in the semiconductor substrate. A wordline material is deposited over the charge-trapping dielectric material and a hard mask material deposited thereon. An anti-reflective coating (ARC) material is deposited on the hard mask material and a photoresist material is deposited on the ARC followed by processing the photoresist material and the ARC material to form a photomask of a patterned photoresist and a patterned ARC. The hard mask material is processed using the photomask to form a hard mask. The patterned photoresist is removed and then the patterned ARC without damaging the hard mask or the wordline material. The wordline material is processed using the hard mask to form a wordline and the hard mask is removed without damaging the wordline or the charge-trapping material.
摘要:
The invention is a semiconductor device and a method of manufacturing the semiconductor device. The semiconductor device includes buried bitlines in a semiconductor substrate. Additionally, doped regions are formed adjacent the buried bitlines. The doped regions adjacent the buried bitlines inhibit a leakage current between the buried bitlines.