Influences of etcher chamber condition on critical-dimension shifts in advanced floating gate etching process.

Autor: Chang, Sheng-Yuan, Chen, Yu-Chung, Wei, An Chyi, Lee, Hong-Ji, Lian, Nan-Tzu, Yang, Tahone, Chen, Kuang-Chao, Lu, Chih-Yuan
Zdroj: 2012 SEMI Advanced Semiconductor Manufacturing Conference; 1/ 1/2012, p151-154, 4p
Abstrakt: The authors investigated the correlation between variation of post-etch critical dimension (ECD) and etcher chamber condition during floating gate etching process. This paper presents the significantly effective method of utilizing the SF6/O2-based very long plasma-chamber cleaning or the novel Transformer coupled plasma (TCP) window temperature design not only achieves a stable gate CD (CD variation < 2nm) but also simplifies etching process. [ABSTRACT FROM PUBLISHER]
Databáze: Complementary Index