发明名称 |
Hard mask process for memory device without bitline shorts |
摘要 |
A manufacturing method for a MirrorBit¹ Flash memory includes providing a semiconductor substrate [102] [602] and depositing a charge trapping dielectric layer [504] [606]. First and second bitlines [512] [608] are implanted and a wordline layer [515] is deposited [610]. A hard mask layer [516] is deposited over the wordline layer [515] [612]. The hard mask layer [516] is of a material formulated for removal without damaging the charge trapping dielectric layer [504]. A photoresist [518] is deposited over the wordline layer [515] and used to form a hard mask [519] [618]. The photoresist [518] is removed [620]. The wordline layer [515] is processed using the hard mask [519] to form a wordline [525-528].
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申请公布号 |
GB2407913(A) |
申请公布日期 |
2005.05.11 |
申请号 |
GB20040019731 |
申请日期 |
2003.01.21 |
申请人 |
* SPANSION LLC |
发明人 |
JEAN Y * YANG;MARK T * RAMSBEY;HIDEHIKO * SHIRAIWA;YIDER * WU;EMMANUIL * LINGUNIS;TAZRIEN * KAMAL |
分类号 |
H01L21/8246;H01L27/115;(IPC1-7):H01L27/112 |
主分类号 |
H01L21/8246 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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