Patent ID: 8993431
Filing Date: 2015-03-31
Classification: H01L

Abstract:
1. A method of forming a semiconductor device, comprising: forming an encapsulating layer over a semiconductor substrate having a metal pad region, wherein the encapsulating layer has an opening exposing a portion of the metal pad region; forming an under-bump metallurgy (UBM) layer overlying the exposed portion of the metal pad region within the opening of the encapsulating layer; forming a bump layer overlying the UBM layer to fill the opening of the encapsulating layer and extend to the upper surface of the encapsulating layer; removing the bump layer from the upper surface of the encapsulating layer; and removing the upper surface of the encapsulating layer until a top portion of the bump layer protrudes from the encapsulating layer, wherein removing the upper surface of the encapsulating layer comprises initiating a removal process on the upper surface of the encapsulating layer and a coplanar top surface of the top portion of the bump layer.