Electro-optic displays

A wavelength selective reflection (WSR) display comprising a wavelength selective reflection medium capable of undergoing a dimensional change in response to an electro-activated process so as to reflect any color of light, the wavelength selective reflection medium having a plurality of pixels and, disposed adjacent the wavelength selective reflection medium, a backing member having a plurality of pixels and having a first, non-reflective optical state, and a second, reflective optical state, the backing member being switchable between its first and second optical states on a pixel-by-pixel basis, the pixels of the backing member being substantially aligned with the pixels of the wavelength selective reflection medium,

• wherein the backing member is placed on the opposed side of the wavelength selective reflection medium from the viewer, and comprises a layer of electro-optic material capable of being switched between a reflective state and a non-reflective state, or a reflective state and a transmissive optical state.