Patent ID: 8188544

Claim:
A driver that drives a display panel, the driver having a first side, a second side, a third side and a fourth side, the first side being shorter than the second side, the third side being shorter than the fourth side, the first side being opposite to the third side, the second side being opposite to the fourth side, a first direction being a direction from the first side toward the third side, and a second direction being a direction from the second side toward the fourth side, the driver comprising: a first interface region provided along the fourth side, the first interface region including a plurality of first pads arranged in the first direction in a plan view; a second interface region provided along the second side, the second interface region including a plurality of second pads arranged in the first direction in a plan view; and first to Nth circuit blocks (N is an integer of two or more) positioned between the first interface region and the second interface region, the first to Nth circuit blocks being arranged in the first direction in a plan view, a width of the first interface region in the second direction being W1, a width of one of the first to Nth circuit blocks in the second direction being WB, a width of the second interface region in the second direction being W2, a width of the driver in the second direction being W, W1, WB, W2 and W having a relation of “W1+WB+W2≦W<W1+2×WB+W2” in a plan view, one of the plurality of first pads having a rectangular shape that has a first short side and a second short side in a plan view, part or the entirety of an electrostatic discharge protection element being positioned underneath a first portion of the one of the plurality of first pads, the first portion being positioned between the first short side and the second short side in a plan view, the electrostatic discharge protection element being electrically connected with the one of the plurality of first pads, part or the entirety of another element being positioned underneath a second portion of the one of the plurality of first pads, the second portion being positioned between the electrostatic discharge protection element and the second short side in a plan view, the part or the entirety of the another element being different from the electrostatic discharge protection element in function.