A white organic light-emitting display device, comprising: a first light-emitting part (131, 231) over a first electrode (118, 218), the first light-emitting part (131, 231) including a first light emission layer (131c, 231c), a first hole transport layer (131b, 231b) between the first electrode (118, 218) and the first light emission layer (131c, 231c), and a first electron transport layer (131d, 231d), wherein the first light emission layer (131c, 231c) includes a blue emission layer; a first charge generation layer (135a', 135b', 235a', 235b') over the first light-emitting part (131, 231); a second light-emitting part (132, 232) over the first light-emitting part (131, 231), the second light-emitting part (132, 232) including a second light emission layer (134/132c, 234/232c) with a hole transport function and a second electron transport layer (132d, 232d), 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 (132, 232) is arranged directly on and contacting the first charge generation layer (135a', 135b', 235a', 235b'), wherein the second light emission layer (134/132c, 234/232c) comprises two emission layers, the two emission layers having a red emission layer (134, 234) 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 (128, 228) over the second light-emitting part (132, 232), wherein the second electron transport layer (132d, 232d) is disposed between the second light emission layer (134/132c, 234/232c) and the second electrode (128, 228), wherein the first electron transport layer (131d, 231d) is disposed between the first light emission layer (131c, 231c) and the second light-emitting part (132, 232) and wherein the red emission layer (134, 234) 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 (131, 231) over a first electrode (118, 218), the first light-emitting part (131, 231) including a first light emission layer (131c, 231c), a first hole transport layer (131b, 231b) between the first electrode (118, 218) and the first light emission layer (131c, 231c), and a first electron transport layer (131d, 231d), wherein the first light emission layer (131c, 231c) includes a blue emission layer; a first charge generation layer (135a', 135b', 235a', 235b') over the first light-emitting part (131, 231); a second light-emitting part (132, 232) over the first light-emitting part (131, 231), the second light-emitting part (132, 232) including a second light emission layer (134/132c, 234/232c) with a hole transport function and a second electron transport layer (132d, 232d), 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 (132, 232) is arranged directly on and contacting the first charge generation layer (135a', 135b', 235a', 235b'), wherein the second light emission layer (134/132c, 234/232c) comprises two emission layers, the two emission layers having a red emission layer (134, 234) 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 (128, 228) over the second light-emitting part (132, 232), wherein the second electron transport layer (132d, 232d) is disposed between the second light emission layer (134/132c, 234/232c) and the second electrode (128, 228), wherein the first electron transport layer (131d, 231d) is disposed between the first light emission layer (131c, 231c) and the second light-emitting part (132, 232) and wherein the red emission layer (134, 234) 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.