Method for mounting a semiconductor chip on a substrate and semiconductor device adapted for mounting on a substrate
AssigneeComputech International Ventures Limited
InventorI-Ming Chen
Life of this patent
Estimating the term…
Abstract
A method for manufacturing a semiconductor device includes the steps of providing a semiconductor chip having a pad-mounting surface with a bonding pad, forming an inner bump on the bonding pad, and forming a conductive body on the pad-mounting surface. The conductive body has an anchor portion connecting electrically with and encapsulating the inner bump, and a contact portion offset from the anchor portion and adapted to be connected to a substrate.
Claims11
A method for mounting a semiconductor chip on a substrate, the substrate having a chip-mounting region provided with a plurality of solder points, the semiconductor chip having a pad-mounting surface provided with a plurality of bonding pads, which are to be connected to corresponding ones of the solder points and which are disposed on the pad-mounting surface at locations that are offset from locations of the corresponding ones of the solder points on the chip-mounting region, said method comprising the steps of:
- forming a plurality of conductive inner bumps, each of which is electrically connected to and is formed so as to protrude from a respective one of the bonding pads;
- forming a photoresist layer on the pad-mounting surface, wherein the inner bumps are embedded in the photoresist layer;
- forming access holes in the photoresist layer, each of which is registered with and exposes at least a portion of a respective one of the inner bumps;
- and
- forming a plurality of conductive bodies, each of which has an extension portion, and an anchor portion and a contact portion on opposite ends of the extension portion, the anchor portion filling a respective one of the access holes and connecting electrically with and encapsulating at least a portion of a respective one of the inner bumps, the contact portion being formed on an upper surface of the photoresist layer opposite to the pad-mounting surface and being disposed at the location corresponding to a respective one of the solder points on the chip-mounting region of the substrate, the extension portion being formed on the upper surface of the photoresist layer and interconnecting the anchor and contact portions.
A method for mounting a semiconductor chip on a substrate, the substrate having a chip-mounting region provided with a plurality of solder points, the semiconductor chip having a pad-mounting surface provided with a plurality of bonding pads, which are to be connected to corresponding ones of the solder points and which are disposed on the pad-mounting surface at locations that are offset from locations of the corresponding ones of the solder points on the chip-mounting region, said method comprising the steps of:
- forming a plurality of conductive inner bumps, each of which is electrically connected to and is formed so as to protrude from a respective one of the bonding pads;
- and
- forming a plurality of spaced apart conductive bodies, each of which has an extension portion, and an anchor portion and a contact portion on opposite ends of the extension portion, the anchor portion connecting electrically with and encapsulating a respective one of the inner bumps, the contact portion being formed on said pad-mounting surface and being disposed at the location corresponding to a respective one of the solder points on the chip-mounting region of the substrate, the extension portion being formed on said pad-mounting surface and interconnecting the anchor and contact portions.
Dependencies are inferred from the claim text.