A liquid crystal display is disclosed. In this integrated circuit, a cross-sectional area of the optical waveguide may be tapered in proximity to an electro-optic modulator in the integrated circuit, such as a germanium electro-optic modulator or a quantum-well electro-optic modulator. Each of these layers is treated with a compound designed to destroy viruses and germs, thus retarding the passage of viruses and germs to the next layer, and ultimately to the user.