Patent ID: 8957457
Filing Date: 2015-02-17
Classification: H01L

Abstract:
1. An electronic device, comprising: a first semiconductor chip having a first array of first connecting elements, the first connecting elements having a first pitch; a second semiconductor chip stacked on the first semiconductor chip, the second semiconductor chip having a second array of second connecting elements, the second connecting elements having a second pitch, the second array having more of the second connecting elements than the first connecting elements of the first array, all of the first connecting elements of the first array being in contact with corresponding ones of the second connecting elements of the second array, and the first pitch of the first array being a multiple of the second pitch of the second array; first and second alignment recognition controllers in the first and second semiconductor chips, respectively, the first and second alignment recognition controllers being configured to determine a position of the first semiconductor chip with respect to the second connecting elements of the second semiconductor chip, the first alignment recognition controller being configured to transmit at least one test signal from the first connecting elements of the first semiconductor chip to ones of the second connecting elements of the second semiconductor chip that are electrically coupled to the first connecting elements and configured to detect the ones of the second connecting elements that receive the at least one test signal; and a switching element in the second semiconductor chip, the switching element being coupled to the second array of second connecting elements and the second alignment recognition controller, the second semiconductor chip having an array of signal lines, the second alignment recognition controller being configured to control the switching element to couple a subset of the second array of the second connecting elements to the array of signal lines based on the test signal.