LONDON – Taiwan's United Microelectronics Corp. (UMC), which has been a struggling number two behind foundry leader Taiwan Semiconductor Manufacturing Co. Ltd. (TSMC), could get one over on its long-time rival by being first in production with FinFET process technology.
This is despite the fact that TSMC (Hsinchu, Taiwan) was one of the originators of the FinFET idea more than a decade ago.
UMC (Hsinchu, Taiwan), courtesy of a licensing deal with computing giant IBM, could be in production with a 20-nm FinFET process as soon as in the second-half of 2014; up to a year ahead of the latest disclosed timing from TSMC.
The process UMC has licensed is for FinFETs on bulk silicon rather than on silicon-on-insulator wafers, according to a spokesperson. This makes it easier to introduce quickly after a running a 20-nm bulk CMOS process. Reports suggest that making sure fins are well defined with a rectangular cross section can make a marked difference to performance and that making FinFETs on SOI wafers could produce a further improvement in leakage current performance.
Shih-Wei Sun, CEO of UMC did not demur when it was put to him that UMC was targeting 2014 for the introduction of 20-nm FinFETs, in a conference call to discuss UMC's second quarter financial results.
He added that UMC's first FinFET would be based on the same 20-nm back-end process as a 20-nm planar CMOS. He said most companies were doing this but that some were defining it as a 16- or 14-nm process. He added that this was really a marketing definition. This is in line with an explanation of a two-step 20-nm process given to analysts recently by Eric Meurice, CEO of lithography equipment vendor ASML.
The latest from TSMC is that its first FinFET process will be at 16-nm and that it is due to ramp in the second half of 2015. Although if TSMC is also using its 20-nm back-end for its FinFET process it may have the option to bring forward its timetable for a FinFET process.Related links and articles:
FinFETs-on-SOI can double battery life, says GSS
ARM, TSMC sign deal to ease FinFET process introduction
ASML outlines a FinFET process 'two-step'
UMC licenses IBM technology for 20-nm FinFETs