Methods and system for flip chip alignment for substrate and leadframe applications are disclosed and may include placing a semiconductor die on bond fingers of a metal leadframe, wherein at least two of the bond fingers comprise one or more recessed self-alignment features. A reflow process may be performed on the semiconductor die and leadframe, thereby melting solder bumps on the semiconductor die such that a solder bump may be pulled into each of the recessed self-alignment features and aligning the solder bumps on the semiconductor die to the bond fingers. The recessed self-alignment features may be formed utilizing a chemical etch process or a stamping process. A surface of the recessed self-alignment features or the bond fingers of the metal leadframe may be roughened. A solder paste may be formed in the recessed self-alignment features prior to placing the semiconductor die on the bond fingers of the metal leadframe.

An electronic package is provided and includes an electronic element, an intermediary structure disposed on the electronic element, and a heat dissipation element bonded to the electronic element through the intermediary structure. The intermediary structure has a flow guide portion and a permanent fluid combined with the flow guide portion so as to be in contact with the electronic element, thereby achieving a preferred heat dissipation effect and preventing excessive warping of the electronic element or the heat dissipation element due to stress concentration.

A method includes forming a solder layer on a surface of one or more chips. A lid is positioned over the solder layer on each of the one or more chips. Heat and pressure are applied to melt the solder layer and attach each lid to a corresponding solder layer. The solder layer has a thermal conductivity of ≥50 W/mK.

A method includes forming a solder layer on a surface of one or more chips. A lid is positioned over the solder layer on each of the one or more chips. Heat and pressure are applied to melt the solder layer and attach each lid to a corresponding solder layer. The solder layer has a thermal conductivity of ≥50 W/mK.

A method of manufacturing a semiconductor device includes arranging a mask on a support. The mask includes a first area and a second area. A substrate is arranged on the mask. The substrate has a mounting area and a non-mounting area. A solder paste is applied on the mounting area of the substrate. After applying the solder paste, at least one electronic device is arranged on the mounting area. A light soldering process is performed by emitting light on the substrate from a light source above the substrate. The first area of the mask is positioned under the non-mounting area and the second area of the mask is positioned under the mounting area.

In some examples, a quad flat no lead (QFN) semiconductor package comprises a flip chip semiconductor die having a surface and circuitry formed in the surface; and a conductive pillar coupled to the semiconductor die surface. The conductive pillar has a distal end relative to the semiconductor die, the distal end having a cavity including a cavity floor and one or more cavity walls circumscribing the cavity floor. The one or more cavity walls are configured to contain solder.

There is provided a semiconductor device including: a lead frame including a first opening portion; a resin filled in the first opening portion; and a semiconductor element electrically connected to the lead frame, wherein a side wall surface of the lead frame in the first opening portion has a larger average surface roughness than an upper surface of the lead frame.

A semiconductor package including a leadframe has a plurality of leads, and a semiconductor die including bond pads attached to the leadframe with the bond pads electrically coupled to the plurality of leads. The semiconductor die includes a substrate having a semiconductor surface including circuitry having nodes coupled to the bond pads. A mold compound encapsulates the semiconductor die. The mold compound is interdigitated having alternating extended mold regions over the plurality of leads and recessed mold regions in between adjacent ones of the plurality of leads.

A MEMS package including a fixed frame, a moveable platform and elastic restoring members is provided. The moveable platform is moved with respect to the fixed frame. The elastic restoring members are connected between the fixed frame and the moveable platform, and used to restore the moved moveable platform to an original position.

A microelectronic device has bump bonds and an inductor on a die. The microelectronic device includes first lateral conductors extending along a terminal surface of the die, wherein at least some of the first lateral conductors contact at least some of terminals of the die. The microelectronic device also includes conductive columns on the first lateral conductors, extending perpendicularly from the terminal surface, and second lateral conductors on the conductive columns, opposite from the first lateral conductors, extending laterally in a plane parallel to the terminal surface. A first set of the first lateral conductors, the conductive columns, and the second lateral conductors provide the bump bonds of the microelectronic device. A second set of the first lateral conductors, the conductive columns, and the second lateral conductors are electrically coupled in series to form the inductor. Methods of forming the microelectronic device are also disclosed.