Patent ID: 7956950

Claim:
A liquid crystal display comprising: an insulating substrate made of a first material; a first wiring feature formed on the insulating substrate and comprising copper; an adhesion layer made of a second material different from the first material, where the adhesion layer is disposed directly on the insulating substrate so as to be interposed between the insulating substrate and the first wiring feature and where the second material provides greater adhesion to each of the insulating substrate and first wiring feature than an adhesion that would be present as between the first wiring feature and the insulating substrate alone, the adhesion layer having a thickness in a range of 190 to 210 nm, and a copper diffusion impeding layer made of a third material different from the second material, where the copper diffusion impeding layer is disposed directly on top of the adhesion layer and the copper diffusion impeding layer covers the first wiring feature that comprises copper; wherein transmittance of light through the adhesion layer is 98 to 100% when the light is of a predefined wavelength in a visible spectrum and when the light is incident on an interface between the insulating substrate and the adhesion layer at a predefined angle relative to a normal of the interface.