A display device includes an organic light-emitting transistor in each of a plurality of pixels forming an image. The organic light-emitting transistor includes a source electrode 51, a drain electrode 52 spaced from the source electrode 51, an organic semiconductor layer 53 between the source electrode 51 and the drain electrode 52, and a gate electrode 50 positioned opposite the organic semiconductor layer 53. The organic semiconductor layer 53 has a portion forming the channel of the organic light-emitting transistor. The gate electrode 50 applies, to the organic semiconductor layer 53, a voltage for controlling light emission of the channel by adjusting the amount of carriers passing through the channel. The source electrode 51 and the drain electrode 52 have light-reflective surfaces between which the organic semiconductor layer 53 is sandwiched. The surfaces are inclined toward the gate electrode 50 or toward the opposite side of the gate electrode 50.