An organic light emitting display (OLED) apparatus comprising: an anode, a cathode, and a plurality of stacks (510, 520, 530) disposed therebetween and stacked one above another, wherein, among the plurality of stacks (510, 520, 530), a first stack closest the anode includes: a hole transporting layer including a first material, and a second material, the hole mobility of the second material being smaller than that of the first material, and wherein the second material is an organic compound including a spirofluorene group, a first emission layer consisting of a blue emission layer as the only emission layer of the first stack, wherein the first emission layer is positioned on the hole transporting layer, wherein, among the plurality of stacks (510, 520, 530), a second stack is positioned between the first stack and the cathode, and the second stack includes a second emission layer consisting of any one of a yellow-green emission layer and a green emission layer, and/or a red emission layer as the only emission layer of the second stack, wherein, among the plurality of stacks (510, 520, 530), a third stack is positioned between the second stack and the cathode and the third stack includes a third emission layer consisting of a blue emission layer as the only emission layer of the third stack. an anode, a cathode, and a plurality of stacks (510, 520, 530) disposed therebetween and stacked one above another, wherein, among the plurality of stacks (510, 520, 530), a first stack closest the anode includes: a hole transporting layer including a first material, and a second material, the hole mobility of the second material being smaller than that of the first material, and wherein the second material is an organic compound including a spirofluorene group, a first emission layer consisting of a blue emission layer as the only emission layer of the first stack, wherein the first emission layer is positioned on the hole transporting layer, wherein, among the plurality of stacks (510, 520, 530), a second stack is positioned between the first stack and the cathode, and the second stack includes a second emission layer consisting of any one of a yellow-green emission layer and a green emission layer, and/or a red emission layer as the only emission layer of the second stack, wherein, among the plurality of stacks (510, 520, 530), a third stack is positioned between the second stack and the cathode and the third stack includes a third emission layer consisting of a blue emission layer as the only emission layer of the third stack. a hole transporting layer including a first material, and a second material, the hole mobility of the second material being smaller than that of the first material, and wherein the second material is an organic compound including a spirofluorene group, a first emission layer consisting of a blue emission layer as the only emission layer of the first stack, wherein the first emission layer is positioned on the hole transporting layer, wherein, among the plurality of stacks (510, 520, 530), a second stack is positioned between the first stack and the cathode, and the second stack includes a second emission layer consisting of any one of a yellow-green emission layer and a green emission layer, and/or a red emission layer as the only emission layer of the second stack, wherein, among the plurality of stacks (510, 520, 530), a third stack is positioned between the second stack and the cathode and the third stack includes a third emission layer consisting of a blue emission layer as the only emission layer of the third stack.