US 2003/0214522 A1 · Image display apparatus

Abstract

There is provided an image display apparatus having light emitting elements in its pixels, and capable of producing a high-resolution, multi-gray-scale-level display. In an embodiment of the present invention, each of pixel circuits is provided with a current limiting circuit for generating a specified drive current and a time modulation circuit for modulating a duration of time supplying the specified drive current to the light emitting element. In another embodiment of the present invention, each of pixel circuits is provided with a current limiting circuit for generating a specified drive current and a current generator circuit for generating a plurality of values of currents on the basis of the specified drive current.

Claims29

Dependent claims

An image display apparatus comprising

a plurality of pixels disposed on a substrate,
a plurality of signal lines for inputting display signals into said plurality of pixels, and
a plurality of signal lines for inputting control signals into said plurality of pixels, wherein
said plurality of signal lines for inputting display signals into said plurality of pixels and said plurality of signal lines for inputting control signals into said plurality of pixels are arranged in a matrix configuration,
each of said plurality of pixels is provided with a light emitting element with light intensity thereof varying with a current therethrough, and a pixel circuit for driving said light emitting element, and
said pixel circuit is provided with current limiting means for generating a specified drive current, and a time modulator circuit for modulating a duration of time supplying said specified drive current to said light emitting element.

3 more elements

Dependencies are inferred from the claim text.

Image display apparatus

Life of this patent

Image display apparatus

Life of this patent

Abstract

Claims29