Semiconductor device having pads, the intervals of which are adjusted and arranged in semiconductor chip corners

Abstract

Abstract A semiconductor pullet 1 includes an integrated circuit formed in the central area of the pellet 1, first electric pads 2 arranged in a line in the peripheral area and second electric pads 3 connected to the conductive lines 4 each of which has a second width L. The first pad 2 has a first width S1 and arranged with a first interval P. The second pads 3 have a third width S2 and are located outside of the first pads 2 in a parallel line to the line of said first pads with a second interval C. The first, second and third widths S1, L, S2 and the first interval P has the relationship P>S2>S1+L. Each of the second pads 3 are located at the positions corresponding to the middle positions between the first pads 2 adjoining each other where the second pads 3 are located in a first area (region A) which is inside of straight lines from a center of the semiconductor pellet having an angle theta with a side of the semiconductor pellet 1, in which theta>tan-1(2C/(P-S1)). Further, each of the second pads 3 are located at the positions shifting in a direction towards a corner of the semiconductor pellet 1 from the middle positions where the second pads 3 are located in a second area (region B) which is outside of the first area (region A).

Inventors

• 👤 Akio Nakamura

Bibliographic Details