摘要:
A method including the step of providing a substrate having a contact pad, and an under bump metallurgy overlying the contact pad, and a photoresist layer overlying the under bump metallurgy, and wherein the photoresist layer has an opening defined therein down to the under bump metallurgy and aligned with the contact pad. Pretreating the substrate with the first wetting solution prior to plating a first seed layer over the under bump metallurgy. Thereafter, plating a first seed layer is plated onto the under bump metallurgy.
摘要:
A method including the step of providing a substrate having a contact pad, and an under bump metallurgy overlying the contact pad, and a photoresist layer overlying the under bump metallurgy, and wherein the photoresist layer has an opening defined therein down to the under bump metallurgy and aligned with the contact pad. Pretreating the substrate with the first wetting solution prior to plating a first seed layer over the under bump metallurgy. Thereafter, plating a first seed layer is plated onto the under bump metallurgy.
摘要:
A method of forming a bump on a substrate such as a semiconductor wafer or flip chip without producing metal ribbon residue. The method includes the step of providing a semiconductor device having a contact pad and having an upper passivation layer and an opening formed in the upper passivation layer exposing a portion of the contact pad. An under bump metallurgy is deposited over the upper passivation layer and the contact pad. A photoresist layer is deposited over the under bump metallurgy. The photoresist layer is a dry film photoresist. The photoresist layer is patterned to provide an opening in the photoresist layers down to the under bump metallurgy and aligned with the contact pad. Additional energy is applied to the photoresist layer to improve the adhesion of the photoresist layer to the under bump metallurgy. An electrically conductive material is deposited into the opening formed in the photoresist layers and overlying the under bump metallurgy and aligned with contact pad. Thereafter the remaining portions of the photoresist layer are removed. The electrically conductive material is reflown to provide a bump on the semiconductor device.
摘要:
The present invention teaches how greater solder ball height can be achieved without the need to sacrifice areal density. The mold in which the solder is formed, is created in two steps. In a first exposure, a negative photoresist (preferably DFR) is patterned to form a conventional cylindrical mold. However, exposure and development time are adjusted in such a way that a layer of unexposed and undeveloped resist of reduced thickness remains covering the floor of the mold. This residual resist layer is given a second exposure and, after development, forms an annular insert in the bottom of the first mold. After the mold has been filled with solder (either through electroplating or by using solder paste) it is removed, the result being a solder bump made up of two contiguous coaxial cylinders the upper one having the larger diameter. After remelt, bumps having this shape form oblate spheroids rather than spheres.
摘要:
In one embodiment, the disclosure relates to a method and apparatus for surface recovery of a polymer insulation layer through implantation. The method includes providing a substrate having thereon a conductive pad and an insulation layer, optionally processing the conductive pad to remove oxide layer formed on the conductive pad and conducting ion implantation to recover dielectric properties of the insulation layer.
摘要:
A system and method for providing a post-passivation and underbump metallization is provided. An embodiment comprises a post-passivation layer that is larger than an overlying underbump metallization. The post-passivation layer extending beyond the underbump metallization shields the underlying layers from stresses generated from mismatches of the materials' coefficient of thermal expansion.
摘要:
The present disclosure provides a method of making an integrated circuit (IC) device. The method includes forming a first IC feature and a second IC feature in a semiconductor substrate, the first and second IC features being spaced from each other and separated by a scribe region; forming, in the semiconductor substrate, a doped routing feature at least partially within the scribe region and configured to connect the first and second IC features; forming a multilayer interconnect (MLI) structure and an interlayer dielectric (ILD) on the semiconductor substrate, wherein the MLI is configured to be absent within the scribe region; and etching the ILD and the semiconductor substrate within the scribe region to form a scribe-line trench.
摘要:
The present disclosure provides a method of making an integrated circuit (IC) device. The method includes forming a first IC feature and a second IC feature in a semiconductor substrate, the first and second IC features being spaced from each other and separated by a scribe region; forming, in the semiconductor substrate, a doped routing feature at least partially within the scribe region and configured to connect the first and second IC features; forming a multilayer interconnect (MLI) structure and an interlayer dielectric (ILD) on the semiconductor substrate, wherein the MLI is configured to be absent within the scribe region; and etching the ILD and the semiconductor substrate within the scribe region to form a scribe-line trench.
摘要:
An integrated circuit structure and methods for forming the same are provided. The method includes providing a substrate; forming a through-silicon via (TSV) opening extending into the substrate; forming an under-bump metallurgy (UBM) in the TSV opening, wherein the UBM extends out of the TSV opening; filling the TSV opening with a metallic material; forming a patterned cap layer on the metallic material; and etching a portion of the UBM outside the TSV opening, wherein the patterned cap layer is used as a mask.
摘要:
A method for providing a cavity structure on a semiconductor device is provided. The method of forming the cavity structure, which may be particularly useful in packaging an image sensor, includes forming a spacer layer over a substrate. The spacer layer may be formed from a photo-sensitive material which may be patterned using photolithography techniques to form cavity walls surrounding dies on the wafer. A packaging layer, such as a substantially transparent layer, may be placed directly upon the cavity walls prior to curing. In another embodiment, the cavity walls are cured, an adhesive is applied to a surface of the cavity walls, and the packaging layer placed upon the adhesive. Thereafter, the wafer may be diced and the individual dies may be packaged for use.