ELECTRIC CIRCUIT BOARD INCLUDING GLASS SUBSTRATE, AND MANUFACTURING METHOD AND APPARATUS THEREOF

摘要

PROBLEM TO BE SOLVED: To adjust (trimming manufacturing) a capacity of a capacitor formed in an electric circuit board without a bad influence like a deterioration in characteristics on a peripheral element. SOLUTION: A focal point of a strong electromagnetic wave like excimer laser is focused to a capacitor formed in a glass substrate and manufactured in trimming by adjusting a variation quantity of crystallized glass formed restrictively in this position. Then the trimming manufacturing with the capacitive value is realized without an influence on another part at outer and peripheral positions, and a circuit board with no change in characteristics and small variation can be produced. In addition, the capacitive value can be more minutely adjusted by manufacturing a dedicated capacitor.