DISPOSITIF ÉLECTRONIQUE ET SON CIRCUIT DE COMMANDE D'UNITÉ D'ÉMISSION DE LUMIÈRE

摘要

An electronic device (10) has a light emitting unit driving circuit (100), which has a first driving transistor (MA2), a second driving transistor (MB2), and a light emitting unit (D). The first driving transistor (MA2) has a first channel width (W) and a first channel length (L) and is used to provide a first current (Ia). The second driving transistor (MB2) has a second channel width and a second channel length and is used to provide a second current (Ib). The light emitting unit (D) is coupled to the first driving transistor (MA2) and the second driving transistor (MB2) for receiving at least one of the first current (Ia) and the second current (Ib) to emit light. A ratio of the first channel width (W) to the first channel length (L) is greater than a ratio of the second channel width to the second channel length.