Patent ID: 11887922
Assignee: SEIKO EPSON CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 11:
12. A semiconductor integrated circuit device configured to be electrically coupled to a printed circuit board electrically coupled to a first external circuit and a second external circuit, the semiconductor integrated circuit device comprising:
an integrated circuit board on, over, or in which a first circuit block and a second circuit block are provided, the integrated circuit board having a first side and a second side opposite of each other; and
a ball grid array that includes a plurality of ball grids, the integrated circuit board being electrically coupled to the printed circuit board via the ball grid array; wherein
the ball grid array includes a first ball grid group including first ball grids, and includes a second ball grid group including second ball grids,
the first ball grid group is configured to provide electric coupling between the first circuit block and the first external circuit,
the second ball grid group is configured to provide electric coupling between the second circuit block and the second external circuit,
a number of the first ball grids is larger than a number of the second ball grids,
a minimum distance between the first ball grid group and the first side is shorter than a minimum distance between the second ball grid group and the first side,
the minimum distance between the first ball grid group and the first side is shorter than a minimum distance between the second ball grid group and the second side,
the first ball grid group is located in such a way that several ball grids among the first ball grids are located linearly in an orthogonal direction to a direction from the first side toward the second side,
the second ball grid group is located in such a way that several ball grids among the second ball grids are located linearly in the orthogonal direction to the direction from the first side toward the second side,
the first ball grid group is located in such a way that at least one of the first ball grids overlaps with at least one of the second ball grids in the direction from the first side toward the second side, and
a frequency of a signal flowing through at least one of the first ball grids is higher than a frequency of a signal flowing through at least one of the second ball grids.