Patent ID: 11948792
Assignee: CORNING INCORPORATED
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC H

Claim 0:
1. A glass wafer for a semiconductor device, comprising:
a glass substrate comprising: a top surface, a bottom surface opposing the top surface, and an edge surface between the top surface and the bottom surface;
a first coating disposed atop the glass substrate, wherein the first coating is a doped crystalline silicon coating having a sheet-resistance of 100 to 1,000,000 ohm per square; and
a second coating having one or more layers disposed atop the glass substrate, wherein the second coating comprises a layer of silicon nitride, a layer of undoped amorphous silicon, and a layer of silicon dioxide, wherein the layer of silicon nitride is disposed atop the layer of undoped amorphous silicon, wherein the layer of undoped amorphous silicon is disposed atop the layer of silicon dioxide, and wherein the layer of silicon dioxide is disposed atop the doped crystalline silicon coating,
wherein the glass wafer has an average transmittance (T) of less than 50% over an entire wavelength range of 400 nm to 1000 nm.