Lg Display Co., Ltd.

Sae Mi Park

Jung Keun Kim

Wook Song

Chun Ki Kim

Do Han Kim

Myeong Seon Cho

Min Hyeong Hwang

Sang Beom Kim

Hye Seung Kang

Young Jun Yu

Disclosed is a light emitting display device configured to have a structure in which an auxiliary conversion portion including color conversion layers having different transmission characteristics and overlapping each other is applied to a non-emission portion of a subpixel, whereby luminous efficacy is improved and current-density-specific color purity is equalized, and therefore image quality is improved.

Light emitting display device

Discussed is a light-emitting device that can include a first electrode and a second electrode facing each other, and disposed on a substrate; a first light emitting stack and a second light emitting stack between the first electrode and the second electrode; and a charge generation stack between the first light emitting stack and the second light emitting stack. The charge generation stack can include a first layer including a first host, a second host, and a metal dopant, and a second layer including the first host, the metal dopant, a third host, and a p-type organic dopant. Amounts of the metal dopant in the first layer and the second layer respectively can increase in going towards an interface between the first layer and the second layer.

Light-emitting device and light-emitting display device including the same

Growing community of inventors

Paju-si, South Korea

Sae Mi Park