Patent ID: 8232622

Claim:
A stacked-chip device comprising: a first inductive chip having a first function; a second inductive chip having a second function different from the first function, which is stacked on the first inductive chip; and a third inductive chip having the second function, which is stacked on the second inductive chip, wherein each of the first, second and third inductive chips has an array of transmitting inductors which transmit data and receiving inductors which receive data, wherein an order of arranging the transmitting inductors and the receiving inductors is the same in the first, second and third inductive chips, wherein the transmitting inductors and the receiving inductors in the first inductive chip are arranged symmetrically with respect to a first line, the transmitting inductors and the receiving inductors in the second inductive chip are arranged symmetrically with respect to a second line which passes through a center of the second inductive chip, and the transmitting inductors and the receiving inductors in the third inductive chip are arranged symmetrically with respect to a third line which passes through a center of the third inductive chip, wherein the first, second and third lines are overlapped, wherein the second inductive chip is disposed in upside-down or back to front to the first and third inductive chips.