Patent ID: 9647176
Date: 2017-05-09
CPC Classifications: G02F,H01L

Claim:
1. A method of producing a control component for a reflective display device, the method comprising: forming over a substrate supporting an array of electronic switching devices an insulator region defining a surface having a controlled surface topography; and forming on said surface of the insulator region by a conformal deposition technique a substantially planar array of reflective pixel conductors, wherein each pixel conductor exhibits specular reflection at a range of reflection angles relative to the plane of the array of pixel conductors for a given incident angle relative to the plane of the array of pixel conductors, wherein the controlled surface topography comprises an array of curved convex features and/or an array of curved concave features; wherein forming said insulator region having said controlled surface topography comprises depositing insulating material over said substrate and patterning by laser ablating a surface of the insulating material to achieve said controlled surface topography, and wherein said laser ablating comprises focusing a laser on a unit area of the surface of the insulating material via a succession of mask patterns, said mask patterns comprising dark field circles of different sizes; and wherein said reflective pixel conductors are each independently controllable via a respective one of said array of electronic switching devices.