TOKYO, Jan 22 (Reuters) - Japan's Nikkei average slid 2.6 percent to a three-week closing low on Friday, as a bleak profit outlook from silicon wafer maker Shin-Etsu Chemical hit tech shares, while exporters slipped as the yen strengthened on plans for new restrictions on U.S. banks.
The benchmark Nikkei shed 277.86 points to 10,590.55, its lowest close since Dec. 30.
The broader Topix dropped 1.6 percent to 940.94. (Reporting by Aiko Hayashi)