In described examples, a microelectronic device includes a microelectronic die with a die attach surface. The microelectronic device further includes a nanoparticle layer coupled to the die attach surface. The nanoparticle layer may be in direct contact with the die attach surface, or may be coupled to the die attach surface through an intermediate layer, such as an adhesion layer or a contact metal layer. The nanoparticle layer includes nanoparticles having adjacent nanoparticles adhered to each other. The microelectronic die is attached to a package substrate by a die attach material. The die attach material extends into the nanoparticle layer and contacts at least a portion of the nanoparticles.

A device is disclosed. The device includes a first die, a plurality of chiplets above the first die, a first underfill material beneath the chiplets, and a gap fill material between the chiplets. The gap fill material is different from the first underfill material. An interface region is formed between the first underfill material and the gap fill material.

A device is disclosed. The device includes a first die, a plurality of chiplets above the first die, a first underfill material beneath the chiplets, and a gap fill material between the chiplets. The gap fill material is different from the first underfill material. An interface region is formed between the first underfill material and the gap fill material.

A semiconductor device and a method of manufacturing a semiconductor device. For example, various aspects of this disclosure provide a semiconductor device having an ultra-thin substrate, and a method of manufacturing a semiconductor device having an ultra-thin substrate. As a non-limiting example, a substrate structure comprising a carrier, an adhesive layer formed on the carrier, and an ultra-thin substrate formed on the adhesive layer may be received and/or formed, components may then be mounted to the ultra-thin substrate and encapsulated, and the carrier and adhesive layer may then be removed.

A semiconductor device and a method of manufacturing a semiconductor device. For example, various aspects of this disclosure provide a semiconductor device having an ultra-thin substrate, and a method of manufacturing a semiconductor device having an ultra-thin substrate. As a non-limiting example, a substrate structure comprising a carrier, an adhesive layer formed on the carrier, and an ultra-thin substrate formed on the adhesive layer may be received and/or formed, components may then be mounted to the ultra-thin substrate and encapsulated, and the carrier and adhesive layer may then be removed.

A conductive composition, which can form bonded portions and is capable of maintaining a thickness of the bonded portions and bonding strength, and which includes: (A) silver fine particles having a number average particle diameter of primary particles of 40 nm to 400 nm, (B) a solvent, and (C) thermoplastic resin particles having a maximal value of an endothermic peak in a DSC chart, determined by a measurement using a differential scanning calorimeter, within a range of 80° C. to 170° C.

A conductive composition, which can form bonded portions and is capable of maintaining a thickness of the bonded portions and bonding strength, and which includes: (A) silver fine particles having a number average particle diameter of primary particles of 40 nm to 400 nm, (B) a solvent, and (C) thermoplastic resin particles having a maximal value of an endothermic peak in a DSC chart, determined by a measurement using a differential scanning calorimeter, within a range of 80° C. to 170° C.

A fingerprint sensor device and a method of making a fingerprint sensor device. As non-limiting examples, various aspects of this disclosure provide various fingerprint sensor devices, and methods of manufacturing thereof, that comprise a sensing area on a bottom side of a die without top side electrodes that senses fingerprints from the top side, and/or that comprise a sensor die directly electrically connected to conductive elements of a plate through which fingerprints are sensed.

A fingerprint sensor device and a method of making a fingerprint sensor device. As non-limiting examples, various aspects of this disclosure provide various fingerprint sensor devices, and methods of manufacturing thereof, that comprise a sensing area on a bottom side of a die without top side electrodes that senses fingerprints from the top side, and/or that comprise a sensor die directly electrically connected to conductive elements of a plate through which fingerprints are sensed.

Provided is an inkjet adhesive which is applied using an inkjet device, wherein the adhesive can suppress generation of voids in the adhesive layer and, after bonding, can enhance adhesiveness, moisture-resistant adhesion reliability, and cooling/heating cycle reliability. An inkjet adhesive according to the present invention comprises a photocurable compound, a photo-radical initiator, a thermosetting compound having one or more cyclic ether groups or cyclic thioether groups, and a compound capable of reacting with the thermosetting compound, and the compound capable of reacting with the thermosetting compound contains aromatic amine.