A white organic light-emitting display device, comprising: a first light-emitting part over a first electrode , the first light-emitting part including a first light emission layer , a first hole transport layer between the first electrode and the first light emission layer , and a first electron transport layer , wherein the first light emission layer includes a blue emission layer; a first charge generation layer over the first light-emitting part ; a second light-emitting part over the first light-emitting part , the second light-emitting part including a second light emission layer (134/132c, 234/232c) with a hole transport function and a second electron transport layer , wherein the second light emission layer (134/132c, 234/232c) is provided directly on the first charge generation layer (135a', 135b' 235a', 235b') without a hole transport layer or a buffer layer in between, wherein the second light-emitting part is arranged directly on and contacting the first charge generation layer , wherein the second light emission layer (134/132c, 234/232c) comprises two emission layers, the two emission layers having a red emission layer provided directly on the first charge generation layer and a yellow-green emission layer (132c, 232 c ) provided directly on the red emission layer ; and a second electrode over the second light-emitting part , wherein the second electron transport layer is disposed between the second light emission layer (134/132c, 234/232c) and the second electrode , wherein the first electron transport layer is disposed between the first light emission layer and the second light-emitting part and wherein the red emission layer includes at least one hole-transport type host with a hole transport property, and the hole transport-type host functions as a hole transport layer. a first light-emitting part over a first electrode , the first light-emitting part including a first light emission layer , a first hole transport layer between the first electrode and the first light emission layer , and a first electron transport layer , wherein the first light emission layer includes a blue emission layer; a first charge generation layer over the first light-emitting part ; a second light-emitting part over the first light-emitting part , the second light-emitting part including a second light emission layer (134/132c, 234/232c) with a hole transport function and a second electron transport layer , wherein the second light emission layer (134/132c, 234/232c) is provided directly on the first charge generation layer (135a', 135b' 235a', 235b') without a hole transport layer or a buffer layer in between, wherein the second light-emitting part is arranged directly on and contacting the first charge generation layer , wherein the second light emission layer (134/132c, 234/232c) comprises two emission layers, the two emission layers having a red emission layer provided directly on the first charge generation layer and a yellow-green emission layer (132c, 232 c ) provided directly on the red emission layer ; and a second electrode over the second light-emitting part , wherein the second electron transport layer is disposed between the second light emission layer (134/132c, 234/232c) and the second electrode , wherein the first electron transport layer is disposed between the first light emission layer and the second light-emitting part and wherein the red emission layer includes at least one hole-transport type host with a hole transport property, and the hole transport-type host functions as a hole transport layer. <EOS>