Amkor Technology, Inc.

Anam Semiconductor Inc.

Amkor Electronics, Inc.

Anam Industrial Co., Ltd.

Other

Won Sun Shin

Seon Goo Lee

Vincent DiCaprio

Do Sung Chun

Tae Hoan Jang

Il Kwon Shim

Ju Hoon Yoon

Byung Joon Han

In Gyu Han

Sung Bum Kwak

Won Kyun Lee

Sang Ho Lee

Choon Heung Lee

Jun Young Yang

Won Dai Shin

Byung T Do

Chang Hoon Ko

Soon Goo Lee

Semiconductor packages having a thin structure capable of easily discharging heat from a semiconductor chip included therein, and methods for fabricating such semiconductor packages, are disclosed. An embodiment of a semiconductor package includes a semiconductor chip having a first major surface and a second major surface, the semiconductor chip being provided at the second major surface with a plurality of input/output pads; a circuit board including a resin substrate having a first major surface and a second major surface, a first circuit pattern formed at the first major surface and provided with a plurality of ball lands, a second circuit pattern formed at the second major surface and provided with a plurality of bond fingers connected with he ball lands by conductive via holes through the resin substrate, cover coats respectively coating the first and second circuit patterns while allowing the bond fingers and the ball lands to be exposed therethrough, and a central through hole adapted to receive the semiconductor chip therein; electrical conductors that electrically connect the input/output pads of the semiconductor chip with the bond fingers of the circuit board, respectively; a resin encapsulate that covers the semiconductor chip, the electrical conductors, and at least part of the circuit board; and, a plurality of conductive balls fused on the ball lands of the circuit board, respectively.

Semiconductor package and method for fabricating the same

A semiconductor package and method for fabricating the same is disclosed. In one embodiment, the semiconductor package includes a circuit board, at least two semiconductor chips, electric connection means, an encapsulant, and a plurality of conductive balls. The circuit board has a resin layer and a circuit pattern. The resin layer is provided with an opening at its center portion. The circuit pattern is formed on at least one of upper and lower surfaces of the resin layer and includes one or more bond fingers and ball lands exposed to the outside. The semiconductor chips have a plurality of input/output pads on an active surface thereof. The semiconductor chips are stacked at a position of the opening of the circuit board, with at least one of the chips being within the opening. Alternatively, both chips are in the opening. The electric connection means connects the input/output pads of the semiconductor chips to the bond fingers of the circuit board. The encapsulant surrounds the semiconductor chips so as to protect the chips from the external environment. The conductive balls are fusion-bonded on the ball lands of the circuit board.

Thin semiconductor package including stacked dies

There is provided a semiconductor package and method for fabricating the same. An embodiment of the semiconductor package includes: a semiconductor chip having a first face and a second face, the first face having a plurality of input/output pads formed thereon; a circuit board composed of a resin film having a first face and a second face, a circuit pattern layer including a plurality of bond fingers and ball lands, and a cover coat covering the circuit pattern layer and selectively exposing the plurality of bond fingers and ball lands, the circuit pattern layer being formed on the first face of the resin film, the circuit board having a through hole at the center thereof, the semiconductor chip being placed in the through hole; electrical connection means for electrically connecting the input/output pads of the semiconductor chip to the bond fingers of the circuit board; an encapsulant for encapsulating the semiconductor chip, connection means and a part of the circuit board; and a plurality of conductive balls fused to the circuit board. Accordingly, the semiconductor package becomes very thin and its heat spreading performance is improved.

There is provided a semiconductor package and method for fabricating the same. An embodiment of the semiconductor package includes: a semiconductor chip having a first face and a second face, the first face having a plurality of input/output pads formed thereon; a circuit board composed of a resin film having a first face and a second face, a circuit pattern layer including a plurality of bond fingers and ball lands, and a cover coat covering the circuit pattern layer and selectively exposing the plurality of bond fingers and ball lands, the circuit pattern layer being formed on the first face of the resin film, the circuit board having a through hole at the center the semiconductor chip being placed in the through hole; electrical connection means for electrically connecting the input/output pads of the semiconductor chip to the bond fingers of the circuit board; an encapsulant for encapsulating the semiconductor chip, connection means and a part of the circuit board; and a plurality of conductive balls fused to the circuit board. Accordingly, the semiconductor package becomes very thin and its heat spreading performance is improved.

A circuit board for semiconductor package is designed to provide a complete grounding with corresponding equipment in the manufacture of the semiconductor package based on a circuit board, thereby preventing a breakdown of the circuit board or semiconductor chip caused by electrostatic charges. The printed circuit board for semiconductor package includes: a resinous substrate; a chip mounting region formed on the top surface of the resinous substrate for mounting a semiconductor chip thereon; a plurality of fine circuit patterns radially disposed in the circumference of the chip mounting region and extending to the edge of the chip mounting region; a plurality of ball lands formed in an array on the bottom surface of the resinous substrate, to be fused to conductive balls; a conductive via hole connecting the circuit patterns on the top surface of the resinous substrate to the ball lands on the bottom surface of the resinous substrate; a cover coat applied to the top and bottom surfaces of the resinous substrate to protect the circuit patterns from an external environment and make the ball lands open to the exterior; and a means for removing electrostatic charges provided at the edge of the substrate and connected to the plural circuit patterns to remove electrostatic charges in the manufacture of semiconductors.

Circuit board for semiconductor package

The invention relates to a grid array type lead frame having a plurality of leads classified into groups by length. The leads extend to respective lead ends, in each of which at least one different plane direction-converting lead part and/or at least one identical plane direction-converting lead part is formed by at least one bending part, whereby the lead ends are distributed in a grid array. The invention also includes a grid array type lead frame, which is as small as or similar to that of semiconductor chip in area while the lead ends are arrayed on one plane, and are at a farther distance away from neighboring ones but in a higher number per area, in such a manner that they form a grid array.

Grid array type lead frame having lead ends in different planes

The invention relates to a grid array type lead frame having a plurality of leads classified into groups by length forming a lead end grid array semiconductor package. The leads extend to respective lead ends, in each of which at least one different plane direction-converting lead part and/or at least one identical plane direction-converting lead part is formed by at least one bending part, whereby the lead ends are distributed in a grid array. The invention includes a lead end grid array semiconductor package employing the grid array type lead frame, which is as small as or similar to that of semiconductor chip in area while the lead ends are arrayed on one plane, farther distant way from neighboring ones but in a higher number per area, in such a manner that they form a grid array.

Lead end grid array semiconductor package

A semiconductor package provided with a heat sink adapted to discharge heat from the package. The package has an oxidation film formed on an upper surface portion of the heat sink to which a semiconductor chip is attached, thereby improving the bonding between the semiconductor chip and heat sink to prevent the occurrence of an interface peel-off and the formation of cracks. This results in an improvement in reliability. A silver layer or a double layer consisting of a nickel layer and a palladium layer formed over the nickel layer is plated on the remaining upper surface portion of the heat sink not attached with the semiconductor chip. Accordingly, it is also possible to achieve easy ground bonding and power bonding. This results in an improvement in performance of the finally produced semiconductor package.

Semiconductor package including heat sink with layered conductive plate

A heat sink-integrated semiconductor package is fabricated by a characteristic method comprising the steps of dispensing a liquid epoxy resin over at least the bare surface of a heat sink mounted with a semiconductor chip, curing said dispensed liquid epoxy resin to form a first encapsulating part so as to prevent delamination at the interface between said heat sink and said semiconductor chip, molding a mold compound to form a second encapsulating part to protect said package from the external environment. The semiconductor package of the present invention, the first encapsulating part is of stronger bonding strength than the second encapsulating part, so that the delamination phenomenon at the interface between heat sink and semiconductor chip can be prevented or relieved efficiently.

Method for fabricating a heat sink-integrated semiconductor package

A lead frame for semiconductor packages is disclosed. In the lead frame, some of the inner leads in the four sides are extended and provided with connection bars on their inside ends. Alternatively, diagonally arranged tie bars of the lead frame are extended and provided with a rectangular guide ring on their inside ends. The connection bar or guide ring functions as a dam for restricting possible overflow of adhesive, which adhesive is applied on the heat sink for bonding a semiconductor chip to the heat sink. The lead frame of the invention also prevents waste of expensive tape by letting the adhesive tape adhere only to the connection bars or to a given portion of the guide ring when mounting the lead frame to the heat sink and makes it possible higher integration of semiconductor chip by making connection bar and guide ring from the lead or the tie bar.

Semiconductor lead frame having connection bar and guide rings

A highly integrated semiconductor package having a light and compact construction and heat dissipating means suitable to effectively dissipate heat generated from the package during the operation of the package is disclosed. The semiconductor package has a lower heat sink for dissipating heat generated from a semiconductor chip of the package. The package also has a tape attached to the top of a plurality of inner leads of the package. The inner leads are attached to the top surface of the lower heat sink. The package further has a heat dissipating means for dissipating heat generated from the inner leads. The heat dissipating means has a heat bar attached to the tape. An upper heat sink may be integrated with the heat bar so as to form the heat dissipating means.

Growing community of inventors

Kyungki-do, South Korea

Won Sun Shin