Patent ID: 8248392
Filing Date: 2012-08-21
Classification: G09G,H05B,Y02B

Abstract:
1. A light-emitting device comprising: a light-emitting element including a light-emitting layer between an anode and a cathode; first means for driving the light-emitting element at a duty rate n (0<n<100); second means for increasing a voltage V of the light-emitting element in accordance with the following formula (4). wherein J wherein f(t′) is a decrease rate which decreases with an emitting time whether a current is applied or not and f(t′) is represented as a monotonically decreasing function where a reserve time t′ is a variable, wherein g(Q) is a parameter which decreases only by applying the current and g(Q) is represented as a monotonically decreasing function where the total quantity Q of electric charge per unit area is a variable, wherein Q wherein the driving time t″ is a time represented by a following formula, t″=t·n/100, when the emitting time of the light-emitting element with the duty ratio of 100 is denoted by t.