EXHIBIT 11.1 ISE LABS, INC. CALCULATION OF NET INCOME PER SHARE (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) THREE MONTHS YEAR ENDED OCTOBER 31, ENDED JANUARY 31, ----------------------- ----------------- 1995 1996 1997 1997 1998 ------- ------- ------- -------- -------- Net income........................... $ 4,930 $ 4,848 $ 5,740 $ 955 $ 2,631 ======= ======= ======= ======== ======== Weighted average common shares outstanding for basic net income per share............................... 17,500 17,500 17,500 17,500 17,500 Potential shares issuable on exercise of employee stock options.............. -- -- -- -- 268 ------- ------- ------- -------- -------- Total weighted average common shares outstanding for diluted net income per share........................... 17,500 17,500 17,500 17,500 17,768 ======= ======= ======= ======== ======== Basic net income per share........... $ 0.28 $ 0.28 $ 0.33 $ 0.05 $ 0.15 ======= ======= ======= ======== ======== Diluted net income per share......... $ 0.28 $ 0.28 $ 0.33 $ 0.05 $ 0.15 ======= ======= ======= ======== ========