Display device incorporating multiple dielectric layers

摘要

This disclosure provides systems, methods and apparatus for providing multiple dielectric coatings for a shutter assembly. The multiple dielectric coatings include an outer dielectric coating and one or more inner dielectric coatings. The outer dielectric coating has an electrical trap density that is lower than electrical trap densities of the one or more inner dielectric coatings. The lower electrical trap density reduces the amount of charge buildup over various surfaces of the shutter assembly. This reduction in charge buildup also reduces electrostatic forces that may cause incorrect operation of the shutter assembly.

主权项

1. An apparatus, comprising:
a light blocking layer, defining a plurality of openings for passing light, disposed on a substrate; at least one light modulator, responsive to image data, configured to modulate light propagating through at least one of the plurality of openings; a first dielectric layer disposed over at least a portion of the light blocking layer and over surfaces of the at least one light modulator that are substantially parallel to the substrate and over surfaces of the at least one light modulator that are substantially normal to the substrate; and a second dielectric layer, having an electrical trap density that is lower than that of the first dielectric layer, disposed directly and substantially conformally over the first dielectric layer.