Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate
Reexamination Certificate
2005-02-01
2005-02-01
Fourson, George (Department: 2823)
Semiconductor device manufacturing: process
Making field effect device having pair of active regions...
Having insulated gate
C428S208000, C428S680000, C257S288000, C257SE21275
Reexamination Certificate
active
06849497
ABSTRACT:
In the case where holes are defined in BPSG films, respectively, lower electrodes are formed of polysilicon inside the holes, respectively, a nitride film is formed on top of the respective lower electrodes and one of the BPSG films, and the nitride film is subjected to healing oxidation in a wet atmosphere later in order to prevent oxidation of contact plugs and the lower electrodes, nitrogen is diffused into the upper surface of the BPSG film by ion implantation or boron dose in a layer in the vicinity of the surface of the BPSG film is lowered.
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Fourson George
Oki Electric Industry Co. Ltd.
Pham Thanh V
Rabin & Berdo P.C.
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