| 摘要 |
PROBLEM TO BE SOLVED: To provide an organic EL device having a compact size and a light weight, capable of display and eliminating the use of extra power, without using an external sensor. SOLUTION: The intensity of a light radiated to an organic EL panel 14 and the temperature of the organic EL panel 14 are measured by measuring a current value with a given voltage impressed on an organic EL element. The emission brightness of the organic EL panel 14 is adjusted to an optimum in a driving circuit 12 in accordance with obtained information. Thus, the organic EL panel 14 has bright emission in a bright area without using an external sensor and emission such that it is not dazzling in a dark area to provide easy-to-see and beautiful display. |
