Patent ID: 7554537

Claim:
A booster circuit including a charge-pump circuit, the booster circuit comprising: first to Mth power supply lines (M is an integer larger than 3); and first and second charge-pump circuits, the first charge-pump circuit includes a first group of first to (M−2)th boost capacitors, the j1th boost capacitor (1≦j1≦M−2, j1 is an integer) being connected between the j1th power supply line and the (j1+1)th power supply line in a first period, and connected between the (j1+1)th power supply line and the (j1+2)th power supply line in a second period after the first period; and the second charge-pump circuit includes a second group of first to (M−2)th boost capacitors, the j2th boost capacitor (1≦j2≦M−2, j2 is an integer) being connected between the j2th power supply line and the (j2+1)th power supply line in the second period, and connected between the (j2+1)th power supply line and the (j2+2)th power supply line in the first period.