CREATE TABLE table_55705 ("Maker" TEXT, "Model" TEXT, "Intro year" TEXT, "Screen size  ( inch ) " TEXT, "Self-lit" TEXT, "Screen type" TEXT, "Screen pixels" TEXT)

Name the size of the screen that came out in 2006 and is iliad
SELECT "Screen size (inch)" FROM table_55705 WHERE "Intro year" = '2006' AND "Model" = 'iliad'
SELECT "Screen size (inch)" FROM "table_55705" WHERE "Intro year" = '2006' AND "Model" = 'iliad'