OLED Display System Compensating for Changes Therein

Abstract

A method of compensating an OLED display device having light-emitting elements that change with use, comprising the steps of: a) using the device to display images; b) sequentially displaying an ordered series of calibration images, wherein each of the calibration images have one or more corresponding flat fields, at least one of the corresponding flat fields of each calibration image of the ordered series has a different luminance value, and the calibration images are arranged in the ordered series so as to reduce perceived luminance discontinuities; c) measuring and recording current used by the display for each sequentially displayed calibration image; d) calculating compensation parameters based on the measured currents; e) compensating an input image using the compensation parameters; and f) displaying the compensated input image.

1 . An OLED display system, comprising:
 a) an OLED device comprising a plurality of light-emitting elements that change with use;   b) a controller for sequentially displaying an ordered series of calibration images, wherein each of the calibration images have one or more corresponding flat fields, at least one of the corresponding flat fields of each calibration image of the ordered series has a different luminance value, and the calibration images are arranged in the ordered series so as to reduce perceived luminance discontinuities; for measuring and recording current used by the display for each sequentially displayed calibration image; for calculating compensation parameters based on the measured currents; for compensating an input image using the compensation parameters; and for displaying the compensated input image.