摘要:
A Wafer-level chip scale package (WLCSP) includes a semiconductor structure and a first bonding pad formed over a portion of the semiconductor structure. The WLCSP further includes a passivation layer formed over the semiconductor structure and the first bonding pad, exposing portions of the first bonding pad. The WLCSP further includes a conductive redistribution layer formed over the passivation layer and the portions of the first bonding pad exposed by the passivation layer. The WLCSP further includes a planarization layer formed over the passivation layer and the conductive redistribution layer, exposing a portion of the conductive redistribution layer. The WLCSP further includes an under-bump-metallurgy (UBM) layer formed over the planarization layer and a conductive bump formed over the UBM layer.
摘要:
An insulating layer (3) is formed to have an opening (3a) corresponding to an electrode pad (2). A projection (4) of resin is then formed on the insulating layer (3). A resist layer is formed to have openings corresponding to the opening (3a), the projection (4) and the area between them. A Cu-plated layer (6) is formed by electrodeposition using the resist layer as a mask.
摘要:
An improved wafer level chip scale packaging technique is described which does not use an encapsulated via to connect between a redirection layer and a pad within the pad ring on the semiconductor die. In an embodiment, a first dielectric layer is formed such that it terminates on each die within the die's pad ring. Tracks are then formed in a conductive layer which contact one of the pads and run over the edge of an opening onto the surface of the first dielectric layer. These tracks may be used to form an electrical connection between the pad and a solder ball.
摘要:
There is provided a method of manufacturing a semiconductor device. The method includes the successive steps of: (a) providing a semiconductor substrate 21; (b) forming a plurality of semiconductor chips 11 having electrode pads 23 on the semiconductor substrate; (c) forming internal connection terminals 12 on the electrode pads; (d) forming an insulating layer 13 on the plurality of semiconductor chips to cover the internal connection terminals; (c) forming a metal layer 33 on the insulating layer; (f) pushing a whole area of the metal layer to bring the metal layer into contact with upper end portions 12-1 of the internal connection terminals; (g) pushing portions of the metal layer which contact the upper end portions of the internal connection terminals, thereby forming first recesses 12-1A in the internal connection terminals, and thereby forming second recesses 14A in the metal layer; and (h) forming wiring patterns 14 by etching the metal layer 33.
摘要:
In a chip-size package, a low-elasticity elastomer (2) which relieves and absorbs the stresses concentrated upon bump electrodes (5) is formed on the main surface of a semiconductor chip (1), and the wiring (4) connected to bonding pads (7) is led out to the upper surface of the elastomer (2) by way of through holes formed through the elastomer (2) and connected to the bump electrodes (5). The stresses concentrated upon the bump electrodes (5) are absorbed and relieved by not only the elastomer (2), but also the expansion and contraction of the wiring (4) led out to the upper surface of the elastomer (2) by laying the wiring (4) in a curved pattern.
摘要:
An insulating layer (3) having an opening portion (3a) at a position conformable to an electrode pad (2) is formed. Next, a resin projection portion (4) is formed on the insulating layer (3). Thereafter, a resist film is formed which has opening portions made in regions conformable to the opening portion (3a), the resin projection portion (4) and the region sandwiched therebetween. A Cu plating layer (6) is formed by electrolytic copper plating, using the resist film as a mask.
摘要:
A chip size package in which an elastomer of low elasticity for damping and absorbing a stress, as might otherwise be concentrated on bump electrodes, is formed over the principal face of a semiconductor chip and in which wires connected with bonding pads are led out to the upper face of the elastomer through through holes formed in the elastomer and are connected at their one-end portions with the bump electrodes. On the other hand, the wires, as led out to the upper face of the elastomer are formed in a curved pattern so that the stress to be concentrated on the bump electrodes may be absorbed and damped by the extension and contraction of not only the elastomer but also the wires.
摘要:
An improved wafer level chip scale packaging technique is described which does not use an encapsulated via to connect between a redirection layer and a pad within the pad ring on the semiconductor die. In an embodiment, a first dielectric layer is formed such that it terminates on each die within the die's pad ring. Tracks are then formed in a conductive layer which contact one of the pads and run over the edge of an opening onto the surface of the first dielectric layer. These tracks may be used to form an electrical connection between the pad and a solder ball.
摘要:
An insulating layer (3) is formed to have an opening (3a) corresponding to an electrode pad (2). A projection (4) of resin is then formed on the insulating layer (3). A resist layer is formed to have openings corresponding to the opening (3a), the projection (4) and the area between them. A Cu-plated layer (6) is formed by electrodeposition using the resist layer as a mask.
摘要:
An insulating layer (3) having an opening portion (3a) at a position conformable to an electrode pad (2) is formed. Next, a resin projection portion (4) is formed on the insulating layer (3). Thereafter, a resist film is formed which has opening portions made in regions conformable to the opening portion (3a), the resin projection portion (4) and the region sandwiched therebetween. A Cu plating layer (6) is formed by electrolytic copper plating, using the resist film as a mask.