Display panel with wavelength converting material and control interface to switchably control independent projection or non-projection of primary and secondary IMAGES

摘要

In one embodiment, apparatus is provided with a display panel, a wavelength converting material, and a light source. The display panel is provided with an interface to receive control signals defining one or more primary images that are projected from the display panel. The wavelength converting material absorbs light of a first wavelength and emits light of a second wavelength. The wavelength converting material defines a secondary image that is projected from the display panel when the wavelength converting material is illuminated by the light of the first wavelength. The light source causes the wavelength converting material to be illuminated by the light of the first wavelength.