Patent ID: 6812651
Filing Date: 2004-11-02
Classification: G09G,H01L

Abstract:
A spontaneous light emitting display device comprising:a plurality of controlled light emitting circuits arranged in a two dimensional array, each controlled light emitting circuit including: a light emitting element producing light in response to a driving current; a light detecting element detecting the light produced by the light emitting element and generating a photoelectric voltage varying with brightness of the light produced by the light emitting element; and a driving circuit receiving the photoelectric voltage produced by the light detecting element and producing a driving current for driving the light emitting element, the driving current varying in response to the photoelectric voltage generated by the light detecting element to compensate for variation in light emission by the light emitting element with respect to the driving current supplied to the light emitting element with reference to a desired characteristic of light emission with respect to driving current.