COLOUR DEFORMABLE MIRROR DEVICE HAVING OPTICAL THIN FILM INTERFERENCE COLOUR COATINGS

摘要

A semiconductor device comprises a plurality of coloured deformable mirrors controllable by electrical circuitry. Groups of mirrors, responsive to the e lectronic signals, are selectably operable to reflect incident light. The deformable m irrors are coated with an optical thin film interference colour coating having at least a layer that is substantially transparent to the visible light. As well the optical thin filminterference colour coating includes at least one fu rther layer that is partially absorbing with respect to the visible light. The spectral reflectance and ab sorptance of the deformable mirror is modified in order to obtain a desired reflectance c olour by the process of optical interference enhanced absorption in the optical thin film interference colour coating. The optical thin film interference colour coati ng has predetermined layer thicknesses and materials; the substantially transparent layer substantially determines the desired reflected colour.