Patent ID: 8859103
Filing Date: 2014-10-14
Classification: C03C,H01L

Abstract:
1. A glass wafer for use in semiconductor fabrication equipment to produce electronic circuit elements, the glass wafer comprising: a glass having a coefficient of thermal expansion from about 2×10 an indexing feature configured to be recognized by the semiconductor fabrication equipment; and a coating on at least a portion of one face of the glass, wherein the coating extends inward from an outer edge of the glass, wherein the coating changes an optical characteristic of at least a portion of the one face of the glass or changes a dielectric property of the glass, and wherein the coating is an organic polymer, a black permanent marker ink, a heat treated thin organic layer, a carbon-filled photoresist material, a darkened (cured) spin-on photoresist, a carbon-filled spin-on-glass material, an inkjetted carbon based ink, silicon nanoparticles, a sintered black screen-printed glass frit material, or a photoluminescent material.