摘要:
In one implementation, a semiconductor package includes a first patterned conductive carrier including partially etched segments. The semiconductor package also includes a control FET having a control drain attached to a first partially etched segment of the first patterned conductive carrier. In addition, the semiconductor package includes a sync FET having a sync source and a sync gate attached to respective second and third partially etched segments of the first patterned conductive carrier. The semiconductor package further includes a second patterned conductive carrier having a switch node segment situated over a control source of the control FET and over a sync drain of the sync FET, as well as an inductor coupled between the switch node segment and an output segment of the second patterned conductive carrier.
摘要:
Systems, apparatuses, and methods provided for semiconductor devices and integrated circuit (IC) packages that include compliant dielectric layers. In a through silicon via interposer or substrate (108), a compliant dielectric material (112) may be added to a surface of silicon material body to form a compliant dielectric layer. The compliant dielectric layer provides a thermal buffer and a stress buffer for a resulting IC package. The compliant dielectric material may be selected such that the coefficient of thermal expansion of the compliant dielectric material approximately matches the coefficient of thermal expansion of the circuit board on which the IC package is mounted. The compliant dielectric material may be selected such that it has a deformability that is greater than the silicon material body. Multiple sub-layers of compliant dielectric material may be used.
摘要:
The semiconductor device mounting surface and substrate mounting surface of a metallic sheet (1) of a lead frame are plated with palladium (1a). The formed lead part, pad part, no-mounting surfaces, and side faces are not plated. The amount of use of palladium is reduced to the requisite minimum, thus providing an inexpensive lead frame.
摘要:
A leadframe is plated with palladium (la) only to a surface of a metal plate (1) on which semiconductors elements are to be mounted and a surface of the metal plate (1) to be placed on a substrate, and is not plated with palladium (la) to lead portions, pad portions, other portions except for the surfaces to be plated and the side surface, of the leadframe, thereby, the amount of use of palladium is reduced to minimum and a cheap leadframe can be provided.
摘要:
A flat conductor frame for fitting with a semiconductor chip (2) and for covering with a plastic mass (4) has a single-piece, metal base body (3) on which an intermediate layer (5) is applied. The intermediate layer (5) has a surface (6) with a matrix of islands (14) of leftover materials having substantially a uniform height and cavities (10) extending therebetween.
摘要:
There is disclosed components for electronic packaging applications having integral bumps. A leadframe is formed by etching a metallic strip from one side to form outwardly extending, substantially perpendicular integral bumps. The metallic strip is then etched from the opposite side to form individual leads. When the integrally bumped component is an package base, fatigue of solder balls is reduced.
摘要:
An object of this invention is to provide a metal sheet processing method and a lead frame processing method which are capable of processing a work to an excellent shape finely with a high dimensional accuracy without being influenced by heat input due to the irradiation of a laser beam. According to the present invention, a metal sheet (101) is coated at both surfaces thereof with photoresist films (1) first, and a laser beam (202) is then applied to the metal sheet (101) through the outer surface of the photoresist film (1) so as to form a plurality of discontinuous through bores (3) in rows with joint portions (6) as unprocessed portions left among the through bores (3). The opened portions (2) formed by the laser beam processing of the photoresist film (1) extend continuously to serve as an etching pattern. The surrounding wall portions (6) are then subjected to etching to remove the same and connect together the through bores (3) formed in rows, whereby clearances (303a) of a predetermined shape are formed. Instead of forming the through bores (3) and joint portions (6) in the metal sheet (101), the steps of forming non-through bores (51) in the metal sheet (101) with joint portions (52) left as unprocessed portions in their bottoms, and then subjecting the resultant product to etching may be taken.
摘要:
Method for selective and precise etching and plating of a conductive substrate through electrophoretic deposition of a photoresist composition. The invention enables chemical milling and plating of products useful in high performance applications such as lead frames with lead widths less than 1.0 mil and precisely plated lead faces.
摘要:
Method for selective and precise etching and plating of a conductive substrate through electrophoretic deposition of a photoresist composition. The invention enables chemical milling and plating of products useful in high performance applications such as lead frames with lead widths less than 1.0 mil and precisely plated lead faces.