Lg Display Co., Ltd.

Jaeseung Jang

Seung Kyun Kim

Ki-Woog Song

Taeshick Kim

Seung Kyeom Kim

Taeil Kum

Jaeil Song

DongHyuk Kim

Younseok Kam

Mingyu Lee

Taeseok Lim

Taell Kum

An organic light emitting display device is disclosed. The organic light emitting display device includes a first light emitting part between an anode and a cathode, the first light emitting part having a first light emitting layer, and a second light emitting part between the first light emitting part and the cathode, the second light emitting part having a second light emitting layer and a third light emitting layer, wherein the second light emitting layer includes a hole-type host and a first electron-type host, and the third light emitting layer includes a first electron-type host and a second electron-type host.

Organic light emitting display device

Disclosed is an organic light emitting display device. The organic light emitting display device includes a first emission part between a first electrode and a second electrode, a second emission part on the first emission part, and a first charge generation layer and a second charge generation layer between the first emission part and the second emission part. The first emission part includes a first organic layer, and the second emission part includes a second organic layer. A first thickness includes the first emission part and the first charge generation layer, and a second thickness includes the second emission part and the second charge generation layer. The first thickness is equal to or greater than the second thickness.

Organic light emitting display device with first to third emission parts

An organic light emitting display device reduces a grayscale-based color difference of the organic light emitting display device. The organic light emitting display device includes opposite first and second electrodes on a substrate and a plurality of emission parts between the first and second electrodes. At least one among the plurality of emission parts includes a first emission layer and a second emission layer having different wavelength ranges. A dopant content in the first emission layer is lower than a dopant content in the second emission layer.

An organic light emitting display device includes a first emission part between an anode and a cathode and a second emission part on the first emission part. At least one of the first emission part and the second emission part includes at least three emission layers emitting lights of different colors, and one of the at least three emission layers include a green emission layer including a phosphorescent material. Accordingly, a lifetime and color reproduction rate of the organic light emitting display device having green lifetime is enhanced.

Organic light emitting display device with multiple emission layers

Growing community of inventors

Seoul, South Korea

Jaeseung Jang