Projection type image display apparatus and image display...

Details Projection type image display apparatus and image display... Projection type image display apparatus and image display...

2005-05-10

2005-05-10

Mahoney, Christopher (Department: 2851)

Optics: image projectors

Composite projected image

Multicolor picture

C353S052000, C353S122000, C345S076000

Reexamination Certificate

active

06890078

ABSTRACT:
A projection type image display apparatus which suppresses deterioration in luminous efficiency of an organic EL element and reduces flickering of projected images and an amplitude of a power supply capacity is disclosed. The apparatus comprises an electroluminescence (EL) element, a projection optical system, and a controller which generates drive signals to control the emission amount from the EL element. An EL material used for a luminescent layer of the EL element is a phosphorescent material which emits phosphorescence by priority, which is emitted from an excited triplet state. The controller generates drive signals by superimposing an intermittent turning-on signal on emission amount modulating signals to modulate current values to be injected into pixels according to display image signals.

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