An organic light emitting display (OLED) apparatus comprising: an anode , a cathode , and a plurality of stacks disposed therebetween and stacked one above another, wherein, among the plurality of stacks , 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 , 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 , 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 disposed therebetween and stacked one above another, wherein, among the plurality of stacks , 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 , 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 , 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 , 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 , 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. <EOS>