Freescale Semiconductor,inc.

Beiyue Yan

Xuesong Xu

Shunan Qiu

Zhigang Bai

You Ge

Xingshou Pang

Guoliang Gong

Yinghui Li

A semiconductor package and method of assembling a semiconductor package includes encapsulating a first pre-packaged semiconductor die stacked on top of and interconnected with a second semiconductor die. The first packaged semiconductor die is positioned and fixed relative to a lead frame with a temporary carrier such as tape. The second semiconductor die is attached and interconnected directly to the first packaged semiconductor die and lead frame. The interconnected first packaged die and second semiconductor die, and lead frame are encapsulated to form the semiconductor package. Different types of semiconductor packages such as quad flat no-lead (QFN) and ball grid array (BGA) may be formed, which provide increased input/output (I/O) count and functionality.

Stacked die semiconductor package

A process for assembling a semiconductor device includes providing a lead frame having a native plane and a plurality of leads having a native lead pitch. The process includes trimming and forming a first subset of the plurality of leads to provide a first row of leads. The process includes trimming and forming a second subset of the plurality of leads to provide a second row of leads. At least one subset of leads is formed with an obtuse angle relative to the native plane such that lead pitch associated with the first or second subset of leads is greater than the native lead pitch.

Semiconductor device with staggered leads

Growing community of inventors

Tianjin, China

Beiyue Yan