March 17, 2004 SG COWEN SECURITIES CORPORATION NEEDHAM & COMPANY, INC. HARRIS NESBITT CORP. As Representatives of the several Underwriters c/o SG Cowen Securities Corporation 1221 Avenue of the Americas New York, New York 10020 Dear Sirs: 1....Underwriting Agreement • March 18th, 2004 • Universal Display Corp \Pa\ • Computer terminals • New York
