Patent ID: 6190936
Filing Date: 2001-02-20
Classification: G02F

Abstract:
A process for forming a reflective electrode comprising the steps of:forming a highest interconnect metallization layer over a silicon substrate having silicon-metal contacts;forming a highest intermetal dielectric layer on top of the highest interconnect metallization;heating the highest intermetal dielectric in the presence of hydrogen to alloy the silicon-metal contacts;planarizing the highest intermetal dielectric after the heating step;creating a via in the highest intermetal dielectric;lining the walls of the via with a liner layer;filling the via with an electrically conductive material;forming an electrode adhesion layer on top of the highest level intermetal dielectric and the via;forming an electrode layer on top of the electrode adhesion layer; andforming a reflectance enhancing coating on top of the electrode layer, the reflectance enhancing coating generating constructive interference of light waves reflected by the electrode layer.