Mark Liu (the first from right)

TSMC, the company which has been suffering from yield issues, has finally brought us some good news.

Mark Liu, the company’s Senior Vice President of Operations, stated during a recent company event that TSMC had improved yield rates on its 40nm processing, with the quality now being about the same level as the mature 65nm node process. The previous chamber matching problems have been completely resolved, reports Digitimes.

TSMC held a ceremony yesterday marking the completion of a new factory building (Phase 5), a part of the company’s Fab 12, which will be employed to carry out volume production of 28nm products in the third quarter of 2010.

The foundry is also planning to construct Phase 6 of Fab 12, which will be used for the upcoming 22nm production, according to Liu.