Presentation 1997/7/25
Bird's Beak free LOCOS Isolation for 256M DRAM
Cheol Soo Park, Chi-Sun Hwang, Young Tag Woo, Sung-Joo Hong, In Sul Chung, Sung Wook Park,
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Abstract(in English) A simple and bird's beak free isolation technology using LOCOS for 256M DRAM scale device is developed. In general, the length of bird's beak is controled under the ratio of pad nitride layer thickness and pad oxide layer thickness. To minimize the length of bird's beak, we use the native oxide created on the top of the chemically cleaned Si substrate as a pad oxide. With lowering the field oxidation ambient temperature to 950℃, the defects due to excess stress of the pad nitride layer disappeared and the length of bird's beak is more reduced. The evaluation of the electrical characteristics is in progress, but some results show that there are many points to be improved.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) LOCOS / Isolation / Bird's Beak / Field Oxide / 256M DRAM / junction leakage current
Paper # ICD97-81
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Conference Date 1997/7/25(1days)
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Registration To Integrated Circuits and Devices (ICD)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Bird's Beak free LOCOS Isolation for 256M DRAM
Sub Title (in English)
Keyword(1) LOCOS
Keyword(2) Isolation
Keyword(3) Bird's Beak
Keyword(4) Field Oxide
Keyword(5) 256M DRAM
Keyword(6) junction leakage current
1st Author's Name Cheol Soo Park
1st Author's Affiliation Memory Research & Development Division, Hyundai Electronics()
2nd Author's Name Chi-Sun Hwang
2nd Author's Affiliation Memory Research & Development Division, Hyundai Electronics
3rd Author's Name Young Tag Woo
3rd Author's Affiliation Memory Research & Development Division, Hyundai Electronics
4th Author's Name Sung-Joo Hong
4th Author's Affiliation Memory Research & Development Division, Hyundai Electronics
5th Author's Name In Sul Chung
5th Author's Affiliation Memory Research & Development Division, Hyundai Electronics
6th Author's Name Sung Wook Park
6th Author's Affiliation Memory Research & Development Division, Hyundai Electronics
Date 1997/7/25
Paper # ICD97-81
Volume (vol) vol.97
Number (no) 198
Page pp.pp.-
#Pages 5
Date of Issue