An organic light emitting display device comprising: a light emitting device disposed at each sub-pixel of a substrate; a pixel circuit configured to drive the light emitting device, the pixel circuit comprising a driving transistor connected to the light emitting device and a switching transistor connected to the driving transistor; a bank providing a first light emitting region at a region, at which the switching transistor and the driving transistor are not disposed, and a second light emitting region at a region, at which the switching transistor and the driving transistor are disposed; and a color filter disposed at the first and second light emitting regions (EA1, EA2), wherein each of the driving transistor and the switching transistor comprises: an active layer (104, 154) disposed on the substrate; a gate electrode (106, 156) overlapping the active layer (104, 154), the gate electrode (106, 156) being separated from the active layer (104, 154) by a gate insulating pattern; a source electrode (108, 158) connected to the active layer (104, 154); and a drain electrode (110, 160) facing the active layer (104, 154), the drain electrode (110, 160) being separated from the source electrode (108, 158) by the active layer (104, 154), and wherein each of the source electrode (108, 158) and the drain electrode (110, 160) includes a transparent conductive layer and an opaque conductive layer disposed on the transparent conductive layer; wherein the transparent conductive layer is disposed in the second light emitting region and the opaque conductive layer is not disposed in the second light emitting region, and wherein the organic light emitting display device is configured such that light emitted from the light emitting device passes through the color filter at the second light emitting region and is emitted to a bottom of the substrate via the transparent conductive layer at the second light emitting region. a light emitting device disposed at each sub-pixel of a substrate; a pixel circuit configured to drive the light emitting device, the pixel circuit comprising a driving transistor connected to the light emitting device and a switching transistor connected to the driving transistor; a bank providing a first light emitting region at a region, at which the switching transistor and the driving transistor are not disposed, and a second light emitting region at a region, at which the switching transistor and the driving transistor are disposed; and a color filter disposed at the first and second light emitting regions (EA1, EA2), wherein each of the driving transistor and the switching transistor comprises: an active layer (104, 154) disposed on the substrate; a gate electrode (106, 156) overlapping the active layer (104, 154), the gate electrode (106, 156) being separated from the active layer (104, 154) by a gate insulating pattern; a source electrode (108, 158) connected to the active layer (104, 154); and a drain electrode (110, 160) facing the active layer (104, 154), the drain electrode (110, 160) being separated from the source electrode (108, 158) by the active layer (104, 154), and an active layer (104, 154) disposed on the substrate; a gate electrode (106, 156) overlapping the active layer (104, 154), the gate electrode (106, 156) being separated from the active layer (104, 154) by a gate insulating pattern; a source electrode (108, 158) connected to the active layer (104, 154); and a drain electrode (110, 160) facing the active layer (104, 154), the drain electrode (110, 160) being separated from the source electrode (108, 158) by the active layer (104, 154), and wherein each of the source electrode (108, 158) and the drain electrode (110, 160) includes a transparent conductive layer and an opaque conductive layer disposed on the transparent conductive layer; wherein the transparent conductive layer is disposed in the second light emitting region and the opaque conductive layer is not disposed in the second light emitting region, and wherein the organic light emitting display device is configured such that light emitted from the light emitting device passes through the color filter at the second light emitting region and is emitted to a bottom of the substrate via the transparent conductive layer at the second light emitting region.