摘要:
According to one exemplary embodiment, a structure comprises a substrate. The structure further comprises at least one memory cell situated on the substrate. The at least one memory cell may be, for example, a SONOS flash memory cell. The structure further comprises an interlayer dielectric layer situated over at least one memory cell and over the substrate. The structure further comprises a first antireflective coating layer situated over the interlayer dielectric layer. According to this exemplary embodiment, the structure further comprises a second antireflective coating layer situated directly over the first anti reflective coating layer. Either the first antireflective coating layer or second antireflective coating layer must be a silicon-rich layer. The first antireflective coating layer and the second antireflective coating may form a UV radiation blocking layer having a UV transparency less than approximately 1.0 percent, for example.
摘要:
According to one exemplary embodiment, a structure comprises a substrate. The structure further comprises at least one memory cell situated on the substrate. The at least one memory cell may be, for example, a flash memory cell, such as a SONOS flash memory cell and may include a gate situated over an ONO stack. The structure further comprises an interlayer dielectric layer situated over the at least one memory cell and over the substrate. According to this exemplary embodiment, the structure further comprises a UV radiation blocking layer situated directly over the interlayer dielectric layer, where the UV radiation blocking layer is selected from the group consisting of silicon-rich oxide and silicon-rich nitride. The UV radiation blocking layer may have a thickness of between approximately 1500.0 Angstroms and approximately 2000.0 Angstroms, for example.
摘要:
According to one exemplary embodiment, a structure comprises a substrate. The structure further comprises at least one memory cell situated on the substrate. The at least one memory cell may be, for example, a flash memory cell, such as a SONOS flash memory cell. The structure further comprises an interlayer dielectric layer situated over the at least one memory cell and over the substrate. According to this exemplary embodiment, the structure further comprises a UV radiation blocking layer which comprises silicon-rich TCS nitride. Further, an oxide cap layer is situated over the UV radiation blocking layer. The structure might further comprise an antireflective coating layer over the oxide cap layer. The interlayer dielectric may comprise BPSG and the oxide cap layer may comprise TEOS oxide.
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:
Process for fabricating a SONOS flash memory device, including in one embodiment, forming a bottom oxide layer of an ONO structure on a semiconductor substrate, wherein the bottom oxide layer has a first oxygen vacancy content; treating the bottom oxide layer to decrease the first oxygen vacancy content to a second oxygen vacancy content; and depositing a dielectric charge-storage layer on the bottom oxide layer. In another embodiment, a process for fabricating a SONOS flash memory device includes forming a bottom oxide layer of an ONO structure on the semiconductor substrate under strongly oxidizing conditions, wherein the bottom oxide layer has a super-stoichiometric oxygen content and an oxygen vacancy content reduced relative to a bottom oxide layer formed by a conventional process; and depositing a dielectric charge-storage layer on the bottom oxide layer.
摘要:
Process for reducing charge leakage in a SONOS flash memory device, including in one embodiment, forming a bottom oxide layer of an ONO structure on the semiconductor substrate to form an oxide/silicon interface having a first oxygen content adjacent the oxide/silicon interface; treating the bottom oxide layer to increase the first oxygen content to a second oxygen content adjacent the oxide/silicon interface; and depositing a nitride charge-storage layer on the bottom oxide layer. In another embodiment, process for reducing charge leakage in a SONOS flash memory device, including forming a bottom oxide layer of an ONO structure on a surface of the semiconductor substrate having an oxide/silicon interface with a super-stoichiometric oxygen content adjacent the oxide/silicon interface; and depositing a nitride charge-storage layer on the bottom oxide layer.
摘要:
A SONOS flash memory device, including a semiconductor substrate; an ONO structure formed on the semiconductor substrate, the ONO structure including a bottom oxide layer, a dielectric charge storage layer and a top oxide layer, the bottom oxide layer having a super-stoichiometric oxygen content and an oxygen vacancy content of about 1010/cm2 or less, wherein the bottom oxide layer exhibits a reduced charge leakage relative to a bottom oxide layer having a stoichiometric or sub-stoichiometric oxygen content and a greater number of oxygen vacancies. In one embodiment, the bottom oxide layer has an oxygen vacancy content of substantially zero.
摘要翻译:一种SONOS闪速存储器件,包括半导体衬底; 形成在半导体衬底上的ONO结构,所述ONO结构包括底部氧化物层,介电电荷存储层和顶部氧化物层,所述底部氧化物层的超化学计量氧含量和氧空位含量为约10 10 / cm 2以下,其中底部氧化物层相对于具有化学计量或亚化学计量的氧含量和更大数量的氧的底部氧化物层显示出减小的电荷泄漏 空缺。 在一个实施方案中,底部氧化物层的氧空位含量基本为零。
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.
摘要:
A method and system of making a mask with a transparent substrate thereon is provided. A first resolution enhancement structure is formed on the first portion of the transparent substrate. A second resolution enhancement structure is formed on a second portion of the transparent substrate, with the second resolution enhancement structure different from the first resolution enhancement structure.
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.