Optrex Corporation

Tadakage Seki

Naoki Kato

Although the driving voltage of an organic EL element is gradually reduced (gradually decreases) as an ambient temperature increases, a supply voltage V, which is supplied to a data electrode driver, is controlled to so as to be kept at a higher value than the driving voltage of the organic EL element by about 6 V as a margin value for supply source in an intermediate temperature range (e.g., from 20 to 60&#xb0; C.). In a high temperature range, the supply voltage Vis decreased, according to temperature rise, in a higher degree as the gradual decrease in the supply voltage Vin the intermediate temperature range.

Growing community of inventors

Tokyo, Japan

Tadakage Seki