Lg Display Co., Ltd.

Lg Display Co., Lttd.

EunJung Park

Byungsoo Kim

Hanbyeol Seok

Dohan Kim

Seonkeun Yoo

Seunghee Yoon

Hyoseok Kim

Jungkeun Kim

Sunghoon Joo

Sangkyoung Moon

Dongil Choi

Discussed is an organic light emitting display device including an anode, a first emission part on the anode, and including a first hole transfer layer, a first emission layer, and a first electron transfer layer, a second emission part on the first emission part, and including a second hole transfer layer, a second emission layer, and a second electron transfer layer, and a cathode on the second emission part. At least one among the first emission part and the second emission part can include an emission control layer having an absolute value of a HOMO energy level which is larger than an absolute value of a HOMO energy level of the first hole transfer layer or the second hole transfer layer. A hole mobility of the emission control layer is 1.0×10−1 cm2/Vs to 1.0×10−2 cm2/Vs lower than a hole mobility of the first hole transfer layer or the second hole transfer layer.

Organic light emitting display device having layer to control charge transfer

An organic light emitting display device is discussed, which includes an anode on a substrate, a first hole transfer layer on the anode, a first emission layer on the first hole transfer layer, a first electron transfer layer on the first emission layer, an N-type charge generation layer on the first electron transfer layer, a second hole transfer layer on the N-type charge generation layer, a first emission control layer on the second hole transfer layer, an absolute value of a highest occupied molecular orbital (HOMO) energy level of the first emission control layer being greater than an absolute value of a HOMO energy level of the second hole transfer layer, a second emission layer on the first emission control layer, a second electron transfer layer on the second emission layer and a cathode on the second electron transfer layer.

An organic light emitting display device includes a plurality of pixels on a substrate, the plurality of pixels having a red subpixel, a green subpixel, and a blue subpixel; an anode on the substrate; a first hole transfer layer on the anode; a first emission layer on the first hole transfer layer in the red subpixel, the green subpixel, and the blue subpixel; a first electron transfer layer on the first emission layer; an N-type charge generation layer on the first electron transfer layer; a second hole transfer layer on the N-type charge generation layer; a second emission layer on the second hole transfer layer in the red subpixel, the green subpixel, and the blue subpixel; a second electron transfer layer on the second emission layer; and a cathode on the second electron transfer layer,

The organic light emitting display device includes a first layer on a first electrode, a second layer on the first layer, a second electrode on the second layer, and an N-type charge generation layer between the first layer and the second layer, wherein the first layer includes a first emission layer and a first electron transport layer, and the second layer includes a second emission layer and a second electron transport layer, and a low unoccupied molecular orbitals (LUMO) level of the first electron transport layer is higher than a LUMO level of a host included in the N-type charge generation layer.

Organic light emitting display device

Discussed is an organic light emitting display device. The organic light emitting display device may include an anode on a substrate, a first emission part that is disposed on the anode and includes a first emission layer and a first electron transfer layer, a second emission part that is disposed on the first emission part and includes a second emission layer and a second electron transfer layer, and a cathode on the second emission part. At least one among the first electron transfer layer and the second electron transfer layer may include a first material and a second material, and an absolute value of a LUMO energy level of the first material may be larger than an absolute value of a LUMO energy level of the second material.

An organic light emitting display device and a light apparatus for vehicles using the same are provided. The organic light emitting display device includes a first layer on a first electrode, a second layer on the first layer, a second electrode on the second layer, and an N-type charge generation layer between the first layer and the second layer. The first layer includes a first emission layer and a first electron transport layer, and the second layer includes a second emission layer and a second electron transport layer. A low unoccupied molecular orbitals (LUMO) level of the first electron transport layer is higher than a LUMO level of a host included in the N-type charge generation layer.

Organic light emitting display device and lighting apparatus for vehicles using the same

An organic light emitting display device includes: a substrate including a display area having a plurality of pixel regions and a non-display area; a first electrode on the substrate; a first organic emissive layer on the first electrode; a charge generation layer on the first organic emissive layer as a common layer for the plurality of pixel regions; a second organic emissive layer on the charge generation layer; a second electrode on the second organic emissive layer as a common electrode for the plurality of pixel regions; and an anti-contact layer between the charge generation layer and the second electrode as a common layer for the plurality of pixel regions. The anti-contact layer completely surrounds the charge generation layer.

Organic light emitting display device and method of manufacturing the same

An organic light emitting display device is discussed. The organic light emitting display device can include at least two or more light emitting parts each including a light emitting layer and an electron transport layer; and a charge generation layer between the two or more light emitting parts and including an N-type charge generation layer, wherein the electron transport layer includes an electron transport compound including a functional group with high electron mobility, and the N-type charge generation layer includes a charge generation compound including a functional group for matching the energy level of the electron transport compound.

An organic light-emitting device includes a first electrode and a second electrode, a first organic emission layer disposed between the first electrode and the second electrode and comprising a first dopant, and a second organic emission layer disposed between the first electrode and the second electrode and comprising a second dopant. The maximum luminescence wavelength of the first dopant may be larger than the maximum luminescence wavelength of the second dopant. The difference between the maximum luminescence wavelength of the first dopant and the maximum luminescence wavelength of the second dopant is 10 nm or less.

Organic light-emitting device

An organic light emitting display device and a light apparatus for vehicles using the same include a first layer on a first electrode, the first layer including a first emission layer and a first electron transport layer, a second layer on the first layer, the second layer including a second emission layer and a second electron transport layer, a second electrode on the second layer, and an N-type charge generation layer between the first layer and the second layer, wherein a low unoccupied molecular orbitals (LUMO) level of the first electron transport layer is higher than a LUMO level of a host included in the N-type charge generation layer.

An organic light emitting display (OLED) device, and a method for manufacturing the OLED device are discussed. The OLED device according to one embodiment includes a substrate; an anode formed on the substrate; a bank formed on the substrate to partially overlap the anode; an organic light emitting element including a portion of a common layer on the anode and another portion of the common layer on the bank, the portion of the common layer on the bank being thinner than the another portion of the common layer on the anode; and a cathode fanned above the portion of the common layer on the anode and the another portion of the common layer on the bank.

Organic light emitting display apparatus and method for manufacturing the same

Disclosed is an organic light emitting display device that comprises a first light emitting unit between a first electrode and a second electrode, the first light emitting unit including a first hole transporting layer and a first light emitting layer; and a second light emitting unit between the first light emitting unit and the second electrode, the second light emitting unit including a second hole transporting layer and a second light emitting layer that emits a light of the same color as a light emitted by the first light emitting layer. An increase in driving voltage caused by a shift of an emission zone in the first light emitting layer or the second light emitting layer by prolonged driving is minimized which solves a problem of increased power consumption and improves the lifetime of the organic light emitting display device.

Growing community of inventors

Goyang-si, South Korea

EunJung Park