Lg Display Co., Ltd.

Gwijeong Cho

Taeshick Kim

Taeil Kum

ChangWook Han

Dohyung Kim

Seung Hyun Kim

Shinhan Kim

Heedong Choi

Mingyu Lee

Younseok Kam

JiYoung Kim

Taeseok Lim

KiWoog Song

Jeongdae Seo

Hongseok Choi

Seung Kyun Kim

Byungchul Ahn

HyungJune Kim

Taesun Yoo

Sangdae Kim

Youngkwan Jung

Yoonheung Tak

Sunghoon Pieh

SungHoon Choi

Taell Kum

Youngseok Kam

Hyungjune Kim

Kiwoog Song

An organic light emitting display device can include a first electrode on a substrate; a first emission part on the first electrode, the first emission part including a first emission layer; a second emission part on the first emission part, the second emission part including a second emission layer; a third emission part on the second emission part, the third emission part including a third emission layer; and a second electrode on the third emission part, in which a first thickness between the substrate and the first emission layer, a second thickness between the first emission layer and the second emission layer, a third thickness between the second emission layer and the third emission layer, and a fourth thickness between the third emission layer and the second electrode are different from each other, and the first, second emission, and third emission parts include at least one organic layer.

Organic light emitting display device

A white organic light-emitting display device includes a red emission layer between a charge generation layer and a yellow-green emission layer and having a hole transport-type host. The white organic light-emitting display device can improve brightness, color gamut, and color shift rate since the red emission layer functions as a hole transport layer and an electron blocking layer, as well as an emission layer. The white organic light-emitting display device can further improve the efficiency of the red emission layer by reducing exciton quenching between the charge generation layer and the red emission layer by the insertion of an auxiliary layer composed of a hole transport-type host between the charge generation layer and the red emission layer.

White organic light-emitting display device

Discussed is an organic light emitting display device. The organic light emitting display device according to an embodiment includes a first electrode and a second electrode on a substrate to be opposite to each other and at least three emission parts between the first electrode and the second electrode. A first distance between the substrate and the first emission layer, a second distance between the first emission layer and the second emission layer, a third distance between the second emission layer and the third emission layer, and a fourth distance between the third emission layer and the second electrode are different from each other.

Provided is a white organic light emitting device which can improve abnormal light emission and efficiency and reliability of the device. A white organic light emitting device according to an exemplary embodiment of the present invention includes: a first light emitting unit including a first emitting layer between a first electrode and a second electrode; a second light emitting unit including a second emitting layer on the first light emitting unit; and a charge generation layer between the first light emitting unit and the second light emitting unit, and a volume of a metal in the charge generation layer is 1.0% or less of the total volume of the charge generation layer.

White organic light emitting device

An organic light emitting device may include first and second electrodes; a first emitting part including a first emitting layer, the first emitting part provided between the first and second electrodes, and the first emitting layer having at least two emitting layers including a blue color emitting layer; a second emitting part including a second emitting layer, the second emitting part provided between the first emitting part and the second electrode, and the second emitting layer having at least two emitting layers including an emitting layer for emitting light having wavelength longer than that of the blue color emitting layer; and a third emitting part including a third emitting layer, the third emitting part provided between the second emitting part and the second electrode, and the third emitting layer having at least two emitting layers including a blue color emitting layer.

Organic light emitting device and display device

Provided is a white organic light emitting diode device, including first and second electrodes facing each other above a substrate, first and second charge generation layers formed between the first electrode and the second electrode, a first stack disposed between the first electrode and the first charge generation layer and including a first light emitting layer, a second stack disposed between the first charge generation layer and the second charge generation layer and including a second light emitting layer, and a third stack disposed between the second charge generation layer and the second electrode and including a third light emitting layer, wherein two of the first to third light emitting layers emit a blue light and the rest light emitting layer emits a yellow-green light.

White organic light emitting diode device

An organic light emitting device and a method for manufacturing the same are provided. The organic light emitting device comprises: a substrate; a first electrode disposed on the substrate; a hole function layer disposed on the first electrode; a first emission layer disposed on the hole function layer; a second emission layer disposed on the first emission layer; an electron function layer disposed on the second emission layer; and a second electrode disposed on the electron function layer, wherein the hole function layer and the first emission layer are melted.

Organic light emitting device and method for manufacturing the same

Growing community of inventors

Daegu, South Korea

Gwijeong Cho