Samsung Display Co., Ltd.

Hyomin Ko

Bora Lee

Changmin Lee

Minji Kim

Eunjae Jeong

Sanghyun Han

Dongjun Kim

Hankyu Pak

Sohee Jo

Juwon Lee

Ilsoo Oh

Illhun Cho

Chang-Min Lee

Jimyoung Ye

Daehyeon Kim

Sanggyun Kim

Yujin Kang

Beomjoon Kim

Daewoong Lee

Provided are a light-emitting device and an electronic apparatus including the same. The light-emitting device includes: an anode; a cathode; an interlayer including an emission layer between the anode and the cathode; and a hole transport region between the anode and the emission layer, wherein the hole transport region includes a first layer and a second layer, the first layer is between the anode and the second layer, the first layer includes a first compound represented by Formula 1, the second layer includes a second compound, and a charge mobility of the first compound is lower than a charge mobility of the second compound.

Light-emitting device and electronic apparatus including the same

A display device includes a base layer including first and second emission regions, first and second electrodes, a first organic layer in the first emission region, and a second organic layer in the second emission region. The first organic layer includes a first electron transport layer, a first auxiliary layer on the first electron transport layer, a first emission layer on the first auxiliary layer, a second auxiliary layer on the first emission layer, and a first hole transport layer on the second auxiliary layer. The second organic layer includes a second electron transport layer, a third auxiliary layer on the second electron transport layer, a second emission layer on the third auxiliary layer, a fourth auxiliary layer on the second emission layer, and a second hole transport layer on the fourth auxiliary layer.

Display device with emission region having multiple emission layers

A light-emitting device includes an electron transport layer, and the electron transport layer include a mixture of a first material, a second material, and a third material, wherein the first material includes an electron transport compound, the second material includes a metal-containing material, and the third material includes a low-refractive-index compound. An electronic apparatus including the light-emitting device is also provided.

A light emitting diode of an embodiment includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. The hole transport region includes a first hole transport layer disposed adjacent to the first electrode and having a first refractive index, a second hole transport layer disposed adjacent to the emission layer and having a second refractive index, and a third hole transport layer disposed between the first hole transport layer and the second hole transport layer and having a third refractive index which is greater than each of the first refractive index and the second refractive index, thereby showing high light extraction efficiency and high emission efficiency properties.

Light emitting diode and display device including the same

Provided is an organic electroluminescence device including a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. The hole transport region includes a first hole transport layer disposed adjacent to the first electrode, the first hole transport layer including a first organic compound having a first dielectric constant and a second hole transport layer disposed between the first hole transport layer and the emission layer, the second hole transport layer including a second organic having a second dielectric constant which is greater than the first dielectric constant.

Organic electro luminescence device and display device including the same

An organic light-emitting device includes: a first pixel electrode on a first emission region, a second pixel electrode on a second emission region, and a third pixel electrode on a third emission region; a counter electrode facing each of the first pixel electrode, the second pixel electrode, and the third pixel electrode; and an interlayer between the counter electrode and each of the first pixel electrode, the second pixel electrode, and the third pixel electrode. The interlayer includes an emission layer, and a hole transport region between the emission layer and each of the first pixel electrode, the second pixel electrode, and the third pixel electrode, the hole transport region includes a planarization layer that includes an amine-based compound represented by Formula 1, Formula 2A, or Formula 2B, and the amine-based compound has a crystallization peak having a noise-to-peak ratio of 1.75 or more in an X-ray diffraction (XRD) spectrum.

Organic light-emitting device and apparatus including the same

A light-emitting device includes a first electrode, a second electrode facing the first electrode, an interlayer disposed between the first electrode and the second electrode and including an emission layer, a first capping layer, and a second capping layer. A refractive index of the first capping layer is greater than a refractive index of the second capping layer, and the first capping layer and the second capping layer are each an organic layer. An electronic apparatus including the light-emitting device is also provided.

Light-emitting device comprising first and second capping layers and electronic apparatus including the same

An organic light emitting element includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer and including an electron transport layer, and a second electrode disposed on the electron transport region. The hole transport region may include a first hole transport layer having a first refractive index, a second hole transport layer disposed on the first hole transport layer and having a second refractive index less than the first refractive index, and a third hole transport layer disposed below the first hole transport layer and having a third refractive index less than the first refractive index. A difference between the first refractive index and the second refractive index, and a difference between the first refractive index and the third refractive index may each be about 0.1 to about 1.0.

Organic light emitting element

A light emitting diode of an embodiment of the present disclosure includes a first electrode, a hole transport region on an upper portion of the first electrode and having a first refractive index, an emission layer on an upper portion of the hole transport region and having a second refractive index less than the first refractive index, an electron transport region on an upper portion of the emission layer, and a second electrode on an upper portion of the electron transport region.

Light emitting diode comprising low refractive emission layer and display device including the same

An organic light emitting diode includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. The hole transport region includes a first hole transport layer which is directly disposed on the lower portion of the emission layer and has a first refractive index, and a second hole transport layer which is disposed on the lower portion of the first hole transport layer and has a second refractive index, thereby exhibiting an improved luminous efficiency characteristic.

Organic light emitting diode

Provided is a display device including a light emitting device and a light receiving device. The light receiving device includes a first light receiving electrode and a light receiving layer. The light receiving device receives a second light reflected from an external object and generates current.

Display device

An organic light-emitting display apparatus and a method of manufacturing the same are provided. An organic light-emitting display apparatus includes a first light-emitting unit including a first color light-emitting layer on an area of a substrate, a second light-emitting unit including a second color light-emitting layer spaced apart from the first color light-emitting layer, and a third light-emitting unit including a third color light-emitting layer as a common layer corresponding to both areas of the first color light-emitting layer and the second color light-emitting layer, and the first color light-emitting layer includes a lower light-emitting layer and an upper light-emitting layer that are stacked to have a multilayered structure.

Growing community of inventors

Suwon-si, South Korea

Hyomin Ko