Micron Technology Incorporated

Yeow Chon Ong

Hong Wan Ng

Faxing Che

Wei Yu

Suresh Kumar Upadhyayula

Ling Pan

Ramesh Nallavelli

Nagavenkata Varaprasad Nune

Lin Bu

Shin Yueh Yang

Implementations described herein relate to various semiconductor device assemblies. In some implementations, an adhesive assembly configured for semiconductor die attachment includes one or more adhesive films capable of semiconductor die attachment, and one or more conductive elements embedded in the one or more adhesive films.

Conductive adhesive assembly for semiconductor die attachment

A semiconductor package assembly includes a substrate, a die stack including at least a bottom die, an inert top spacer, and at least a first inert base spacer. The inert top and base spacers are exclusive of any circuits. A top surface of the inert top spacer is directly attached to a bottom surface of the bottom die in the die stack. A top surface of the first inert base spacer is directly attached to a bottom surface of the inert top spacer and a bottom surface of the first inert base spacer is directly attached to the substrate. The footprint of the inert base spacer is smaller than the footprint of the inert top spacer. In some embodiments, the footprint of the inert base spacer is positioned entirely within the footprint of the inert top spacer.

Methods and apparatus for using spacer-on-spacer design for solder joint reliability improvement in semiconductor devices

A semiconductor device assembly includes a semiconductor die, a substrate, and a spacer directly coupled to the substrate. The spacer includes a flexible main body and a support structure embedded in the flexible main body, wherein the support structure has a higher stiffness than the flexible main body. The spacer carries the semiconductor die. The flexible main body of the spacer mitigates the effects of thermomechanical stress, for example caused by a mismatch between the coefficient of thermal expansion of the semiconductor die and the substrate. The embedded support structure provides strength needed to support the semiconductor die during assembly.

Semiconductor devices with flexible spacer including a support structure and methods of making the same

The subject application relates to reinforced semiconductor device packaging and associated systems and methods. The device generally includes a substrate and one or more integrated circuit dies electrically coupled to the substrate with wire bonds. The device includes an encapsulant enclosing the one or more dies and the wire bonds. The package can include a reinforcing layer positioned on one or more surfaces of the encapsulant, a reinforcing wire extending through the encapsulant, or entrained reinforcing fiber portions positioned throughout the encapsulant. The reinforcing layer can be textile woven from synthetic or natural fibers, such as aramid, carbon, or glass. The package can be formed by disposing a reinforcing textile layer in a mold, placing a die and substrate in the mold with a liquid encapsulant, and hardening the liquid encapsulant to adhere the reinforcing textile layer, the encapsulant, the die, and the substrate together.

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Yeow Chon Ong