A pixel includes: a light emitting element; a first transistor which drives the light emitting element; a second transistor electrically connected between a gate node of the first transistor and a data line; a third transistor electrically connected between a first node of the first transistor and an initialization voltage line; and a storage capacitor electrically connected between the gate node and the first node of the first transistor. Here, upon an operation in a variable frame mode, an initialization voltage is applied to the initialization voltage line, and the initialization voltage has a first voltage level. In addition, in a data writing period during which the storage capacitor is charged with an electric charge, the initialization voltage further includes a pulse voltage such that the initialization voltage has a second voltage level that is greater than the first voltage level.