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142results about How to "Block compound" patented technology

Plastic encapsulated semiconductor device with reliable down bonds

InactiveUS20060006510A1Hinder delaminationReliable bondingSemiconductor/solid-state device detailsSolid-state devicesGround planeDevice material
Plastic encapsulated semiconductor devices having elevated topographical features on the chip mount pad to control the extent of delamination at the plastic to substrate interface, thereby allowing reliable down bond sites to be formed on the top surface of the chip mount pad which may serve as a ground plane. The cost effective invention is applicable to a variety of semiconductor packages, including both leaded and non-leaded types for high frequency circuits.
Owner:TEXAS INSTR INC

BGA package with encapsulation on bottom of substrate

InactiveUS20080116574A1Reduce exposed areaImprove semiconductor product moisture resistanceSemiconductor/solid-state device detailsSolid-state devicesResistMetallurgy
A BGA package with encapsulation on substrate bottom comprises a chip, a substrate, a molding compound and a plurality of solder balls. The substrate has a SMT surface placing a plurality of ball pads. The molding compound encapsulates a solder resist layer on the SMT surface of the substrate and has a plurality of through holes exposing the ball pads respectively. The hole diameter of the through holes is greater than that of the openings of the solder resist layer on the substrate to allow the solder balls not to contact the molding compound. The solder balls are disposed in the through holes and are bonded to the exposed ball pads of the substrate thereby enhancing moisture resistance of BGA products and preventing the solder balls from falling because of contact stress of the molding compound.
Owner:POWERTECH TECHNOLOGY

Process for producing photochromic layered product

A method of producing a laminate comprising preparing a substrate having curved surfaces; applying a photpolymerizable and curable composition containing a photochromic compound and a phosphorus-containing photopolymerization initiator onto the curved surfaces of the base member; and curing the photopolymerizable and curable composition by the irradiation with an active energy ray having a relative intensity profile of 0 to 5% of wavelength components of not shorter than 200 nm but shorter than 300 nm, 25 to 75% of wavelength components of not shorter than 300 nm but shorter than 400 nm and 25 to 75% of wavelength components of not shorter than 400 nm but not longer than 500 nm while maintaining the substrate at not higher than 100° C. This method makes it possible to form a homogeneous and thin film containing a photochromic compound at a high concentration and having a uniform thickness on the substrate having a curved surface, such as a spectacle lens that is generally available, and to impart photochromic properties while maintaining excellent mechanical and optical properties of the substrate.
Owner:TOKUYAMA CORP

Exhaust Gas Purifying Catalyst and Production Method Thereof

An object is to maintain an effect of enhancing activity of noble metal particles by transition metal without increasing production cost and an environmental load.An exhaust gas purifying catalyst 1 is composed of: noble metal particles 2; first compounds 3 which contact the noble metal particles 2 and suppress movement of the noble metal particles 2; and second compounds 4 which contain the noble metal particles 2 and the first compounds 3, suppress the movement of the noble metal particles 2, and suppress coagulation of the first compounds 3 following mutual contact of the first compounds 3, wherein the first compounds 3 support the noble metal particles 2, and simplexes or aggregates of the first compounds 3 supporting the noble metal particles 2 are included in section partitioned by the second compounds 4.
Owner:NISSAN MOTOR CO LTD +1

Multi-layer dye-scavenging article

A multi-layer dye-scavenging article for use in hand or machine washing systems is disclosed. More specifically, a multi-layer article for the introduction of dye absorbing, dye transfer inhibiting and / or other detergent active materials into an aqueous wash system is disclosed.
Owner:THE PROCTER & GAMBLE COMPANY
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