Patent ID: 8599116

Claim:
A light-emitting device comprising: a substrate that has a display area and a peripheral area positioned outside of the display area; a plurality of displaying pixels, disposed in the display area, and a plurality of temperature-detection pixels, disposed in the peripheral area and a center area of the display area, each pixel comprising a first electrode, a second electrode, and including an organic electroluminescent layer which includes organic material and is disposed between the first electrode and the second electrode, wherein the plurality of displaying pixels display information and the plurality of temperature-detection pixels further comprise a light shielding layer that is directly disposed between the first electrode and the organic electroluminescent layer to prevent the temperature-detection pixels to display information; a temperature detector that is disposed on the substrate in the peripheral area and detects a current value of the temperature-detection pixels so as to detect the temperature of each respective temperature-detection pixel, the temperature detector being coupled with the temperature-detection pixels; an applied-current calculator that is disposed above the substrate in the peripheral area and calculates an electric current to be applied to the display light-emitting element in accordance with the temperature detected by the temperature detector so that the display light-emitting element emits a light with a predetermined luminance; and a current applying unit that is disposed above the substrate in the peripheral area and applies the electric current to the display light-emitting element.