Patent ID: 8633602
Filing Date: 2014-01-21
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a first semiconductor chip; a second semiconductor chip stacked on the first semiconductor chip via an adhesive layer; and a molding resin with filler particles sealing the first and second semiconductor chips, wherein a value of “y” corresponds to an approximation of stress applied on the surface of the semiconductor chip under the filler particles and is 70 or less, the value of “y” being calculated on the basis of the following formula (1): where a1 represents a logarithm of the modulus of elasticity [MPa] of the adhesive layer, a2 represents the sink amount [mm] of the adhesive layer, a3 represents the thickness [mm] of a protective film at the surface of the first semiconductor chip, and a4 represents a logarithm of the modulus of elasticity [MPa] of the protective film at the surface of the first semiconductor chip.