Patent ID: 6890078

Claim:
A projection type image display apparatus, comprising: an electroluminescence element having a plurality of pixels that can be individually modulated, in which the modulating pixels which generate and emit light by means of recombination of excitons formed by injecting electron charge carriers into a luminescent layer are two-dimensionally arranged, a projection optical system which projects light emitted from the individual modulated pixels of the electroluminescence element, a controller which generates drive signals to control the emission amount of the electroluminescence element, wherein an electroluminescence material used for the luminescent layer is a phosphorescent material which emits phosphorescence by priority, which is emitted from an excited triplet state, and the controller superimposes intermittent turning-on signals with predetermined cycles on emission amount modulating signals which modulate current values to be injected into the pixels according to display image signals.