SANTA CLARA, Calif.--(BUSINESS WIRE)--Affymetrix, Inc. (Nasdaq: AFFX) today announced the closing of its previously announced registered offering of $275 million aggregate principal amount of unsecured 3.50% Senior Convertible Notes due 2038. As previously announced, the Company intends to use the net proceeds from the offering for working capital and general corporate purposes, which may include funding its operations, capital expenditures, potential acquisitions of businesses, product or technologies it believes to be of strategic importance and repurchases or redemption of all or a portion of its 0.75% Senior Convertible Notes due 2033.