Patent ID: 8704803
Filing Date: 2014-04-22
Classification: G09G,H01L,H04M

Abstract:
1. A display device comprising: a display screen comprising a plurality of light emitting elements over a substrate, the plurality of light emitting elements being configured to generate light corresponding to a display image and to generate light corresponding to a background image; an optical sensor for detecting outside light and outputting an output signal; and a controller configured to control generation of light by the plurality of light emitting elements to change a luminance of the background image relative to a luminance of the display image in accordance with the output signal of the optical sensor, wherein one of the plurality of light emitting elements comprises a first electrode, a light emitting layer over the first electrode, and a second electrode over the light emitting layer, and wherein the optical sensor is formed over the second electrode, wherein the controller is configured to transmit a control signal, and wherein the display device further comprises a power supply configured to receive the control signal and respond to the control signal by increasing the luminance of the display image in a manner that utilizes an electricity left unconsumed when the background image is displayed in black.