Digitimes said that it looks like competition from Samsung Electronics, Globalfoundries, UMC and SMIC will not be enough to upset TSMC's rule.

TSMC started its commercial 28nm process five years ago and now accounts for over 75 per cent of the global 28nm foundry market. In addition, the 28nm products also contributed 30 per cent to TSMC's total revenues in 2014.

Initially 28nm capacity was triggered by rising demand for application processors for smartphones and tablets. TSMC had clients including Qualcomm, MediaTek, Apple and Nvidia.

Vlients from the mobile device sector will continue to fill TSMC with 28nm orders in 2015, but the SSD market is expected this year is likely to give another wave of demand for 28nm.

Controller chips for SSDs are to officially migrate into the 28nm process in 2015, and TSMC has an advantage to solicit more orders from SSD vendors.

TSMC has reportedly snapped up SSD controller chips orders from Marvell Technology, Phison Electronics and more recently from Apple. Thus, TSMC will see its share in the 28nm process market remain high and contribution of the 28nm products to its sales further increase in 2015.