Lg Display Co., Ltd.

Other

Lg Display., Ltd.

Seung-Ryong Joung

Hong-Seok Choi

Jun-ho Lee

Yoon-Deok Han

Gyeong-Woo Kim

Tae-Shick Kim

So-Yeon Ahn

Ji-Seon Jang

Chang-Wook Han

Kang-Ju Lee

Seong-Su Jeon

Hee-Su Byeon

Do-Hyung Kim

Ki-Woog Song

Hee-Dong Choi

Byung-Chul Ahn

Dong-Hyuk Kim

Shin-Han Kim

Sung-Joon Bae

Sung-Hoon Pieh

Tae-Il Kum

Yoon-Heung Tak

Gwi-Jeong Cho

Jae-Man Lee

Jae-Il Song

Tae-Sun Yoo

Ahn-Ki Kim

Sang-Hun Han

Disclosed are an organic light emitting device and a display device using the same in which a light emitting layer includes a host and a plurality of dopants. In the light emitting layer, energy is transferred from a host and other dopants to one dopant by energy transfer system, thus it is possible to increase luminous efficacy of a single color and to increase lifetime of emission.

Organic light emitting device and display device using the same

Discussed is an organic light emitting device in which a light emitting layer includes a host and different kinds of dopants, the fluorescent dopant is formed of a material having energy level properties facilitating thermally activated delayed fluorescence (TADF), and thus energy is concentratedly transferred to the fluorescent dopant so as to increase luminous efficacy of a single color.

Disclosed are a display panel which changes the inner structure of an organic light emitting stack and a color transmission structure so as to improve luminance, and a head mounted display device using the same.

Display panel and head mounted display device having the same

Disclosed is a display panel configured such that, in a structure in which the distance between a display surface and a viewer is short, the structure between a reflective plate and a first electrode (an anode) is changed such that light having three or more color peak properties for all subpixels is transmitted through a second electrode (a cathode), whereby white expression as well as color expression is possible, and a head mounted display device including the same.

Display panel and head mounted display device including the same

An organic light emitting diode display device includes an overcoating layer on a substrate having an emitting area and a non-emitting area and including a plurality of convex portions and a plurality of concave portions; a first electrode on the overcoating layer; a light emitting layer on the first electrode; and a second electrode on the light emitting layer, wherein the light emitting layer includes first, second and third emitting material layers sequentially under the second electrode, and wherein the first emitting material layer emits a first light of a first wavelength, the second emitting material layer emits the first light of the first wavelength, and the third emitting material layer emits a second light of a second wavelength different from the first wavelength.

Organic light emitting diode display device

An organic light emitting diode display device includes: an overcoating layer on a substrate having an emitting area and a non-emitting area and including a plurality of convex portions and a plurality of concave portions; a first electrode on the overcoating layer; a light emitting layer on the first electrode and including a first emitting material layer; and a second electrode on the light emitting layer, wherein the light emitting layer includes first, second and third emitting material layers sequentially under the second electrode, and wherein the first emitting material layer emits a first light of a first wavelength, the second emitting material layer emits the first light of the first wavelength, and the third emitting material layer emits a second light of a second wavelength different from the first wavelength.

A white organic light emitting diode (OLED) includes a first electrode and a second electrode facing each other; a first charge generation layer and a second charge generation layer between the first and second electrodes; a first light emitting unit including a first emitting material layer emitting a first color, wherein the first light emitting unit is located between the first electrode and the first charge generation layer; a second light emitting unit including a second emitting material layer emitting a second color, wherein the second light emitting unit is located between the first charge generation layer and the second charge generation layer; and a third light emitting unit including a third emitting material layer emitting the second color, wherein the third light emitting unit is located between the second charge generation layer and the second electrode.

White organic light emitting diode and display device using the same

An organic light emitting device including a first electrode connected to a thin film transistor formed on a substrate, a second electrode opposite to the first electrode, and an organic laminate formed between the first electrode and the second electrode and including a hole transport layer, a multilayer-light emitting structure, and an electron transport layer. The multilayer-light emitting structure includes at least two light emitting layers emitting light of different colors through recombination of electrons and holes injected through the first and second electrodes, and a charge transport control layer formed of a bipolar material transporting both electrons and holes at boundaries between the at least two light emitting layers and controlling the amount of charges transported between the at least two light emitting layers.

Organic light emitting device including a multi-layer light emitting structure and an organic light emitting display including the organic light emitting device

An organic electroluminescent device and organic electroluminescent display device having enhanced efficiency are discussed. In one example, the organic electroluminescent device includes first and second electrodes facing each other on a substrate and at least two emission layers formed between the first and second electrodes and realizing blue light, wherein, among the emission layers, a first blue emission layer close to the first electrode includes a first blue dopant having a different maximum luminescence wavelength than that of a second blue dopant of a second blue emission layer close to the second electrode.

Organic electroluminescent device and organic electroluminescent display device

An organic light emitting diode display device includes a first substrate including a display area, wherein a plurality of pixels each including sub-pixels is defined in the display area; a switching thin film transistor and a driving thin film transistor in each of the sub-pixels over the first substrate; light-blocking patterns in at least one of the sub-pixels; a color filter layer in at least one sub pixel; a first passivation layer over the switching thin film transistor, the driving thin film transistor and the light-blocking patterns; a first electrode in each of the sub-pixels over the first passivation layer; an organic light emitting layer on the first electrode all over the display area; and a second electrode on the organic light emitting layer all over the display area.

An organic light emitting display device is provided to avoid color change due to a viewing direction. The organic light emitting display includes a light compensation layer having a refractive index different than that of an insulating layer. The organic light emitting display may be disposed at the side to which light emitted from an organic light emitting layer is entered to change the path and phase of light, thereby coinciding cavity peak phases for each wavelength of white light emitted from an organic light emitting unit.

Growing community of inventors

Gwangmyeong-si, South Korea

Seung-Ryong Joung