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:
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 method of manufacturing an integrated circuit includes providing a semiconductor substrate and depositing a charge-trapping dielectric layer and a gate dielectric layer over the semiconductor substrate. Bitlines are implanted closely in the semiconductor substrate and annealed using a rapid thermal anneal. Wordlines and gates are formed and source/drain junctions are implanted in the semiconductor substrate. An interlayer dielectric layer is deposited and the integrated circuit completed.
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 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:
A method of manufacturing an integrated circuit includes a semiconductor substrate having bitlines under a charge-trapping material over a core region and a gate insulator material over a periphery region. A wordline-gate material, a hard mask, and a first photoresist are deposited and patterned over the core region while covering the periphery region. After removing the first photoresist, wordlines are formed from the wordline-gate material in the core region. An anti-reflective coating and a second photoresist are deposited and patterned over the periphery region and covering the core region. The anti-reflective coating is removable without damaging the charge-trapping material. After removing the second photoresist and the anti-reflective coating, gates are formed from the wordline-gate material in the periphery region and the integrated circuit completed.
摘要:
A method of manufacturing an integrated circuit is provided with a semiconductor substrate having a core region and a periphery region. A charge-trapping dielectric layer is deposited in the core region, and a gate dielectric layer is deposited in the periphery region. Bitlines are formed in the semiconductor substrate in the core region and not in the periphery region. A wordline-gate layer is formed and implanted with dopant in the core region and not in the periphery region. A wordline and gate are formed. Source/drain junctions are implanted with dopant in the semiconductor substrate around the gate, and the gate is implanted with a gate doping implantation in the periphery region and not in the core region.
摘要:
A manufacturing method for a MirrorBit® Flash memory includes providing a semiconductor substrate and depositing a charge-trapping dielectric layer. First and second bitlines are implanted and a wordline layer is deposited. A hard mask layer is deposited over the wordline layer. The hard mask is of a material formulated for removal without damaging the charge-trapping dielectric layer. A photoresist is deposited over the wordline layer and used to form a hard mask. The photoresist is removed. The wordline layer is processed using the hard mask to form a wordline and the hard mask is removed. A salicide is grown without short-circuiting the first and second bitlines.
摘要:
A method of manufacturing for a Flash memory includes depositing a charge-trapping material over a semiconductor substrate and implanting first and second bitlines. A wordline material is deposited over the charge-trapping dielectric material and a hard mask material deposited. A disposable anti-reflective coating (ARC) material and a photoresist material are deposited followed by processing to form a patterned photoresist material and a patterned ARC material. The hard mask material is processed to form a patterned hard mask material. The patterned photoresist is removed and then the patterned ARC without damaging the patterned hard mask material or the wordline material. The wordline material is processed using the patterned hard mask material to form a wordline and the patterned hard mask material is removed without damaging the wordline or the charge-trapping dielectric material.