Patent ID: 8963266
Filing Date: 2015-02-24
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a light sensor formed within the semiconductor device; a passivation layer covering the light sensor; a conformal sacrificial protective layer covering at least a portion of the passivation layer that covers the light sensor; and a bond pad for the light sensor; a bond pad opening that extends through the passivation layer and the conformal sacrificial protective layer and exposes a portion of a top surface of the band pad so that a wire bond can be bonded to the exposed portion of the top surface of the bond pad; wherein the conformal sacrificial protective layer covers a perimeter of the bond pad without covering the exposed portion of the top surface of the bond pad and forms a sidewall seal for the bond pad; and wherein the conformal sacrificial protective layer comprises at least one of an oxide, oxynitride, tetraethyl orthosilicate, silicon nitride, titanium nitride or titanium tungsten, or combinations thereof.