Lumiotec Inc.

Xianyang Chvt New Display Technology Co., Ltd.

Mitsuru Morimoto

Junichi Tanaka

Koichi Mori

This organic EL element has one blue light emitting unit, and has a continuous emission spectrum. The organic EL element has one or two peak wavelengths in a blue light wavelength range of 440 nm-490 nm within this emission spectrum, the correlated color temperature of white light is 3300K or greater, and according to a special color rendering index (Ri) of white light, R6 is 60 or greater and R12 is 30 or greater.

Organic electroluminescent element having stacked light emitting units

This organic EL element comprises a first light emitting unit that contains a red phosphorescent light emitting layer and a green phosphorescent light emitting layer, a second light emitting unit that contains a blue fluorescent light emitting layer, and a third light emitting unit that contains a blue fluorescent light emitting layer; and this organic EL element has a structure in which a positive electrode, the third light emitting unit, a second charge generating layer, the second light emitting unit, a first charge generating layer, the first light emitting unit and a negative electrode are sequentially laminated in this order. The white light obtained through light emission of the first, second and third light emitting units has one peak wavelength within the red wavelength range, one peak wavelength within the green wavelength range, and one or two peak wavelengths within the blue wavelength range.

Organic electroluminescent element having a charge generating layer between adjacent light emitting layers

The present invention provides an organic electroluminescent element which includes a first light emitting unit () that is positioned on the side of a cathode () and includes a first light emitting layer (A), a second light emitting unit () that is adjacent to the first light emitting unit () with sandwiching a first charge generating layer (A) and includes a second light emitting layer (B), and a third light emitting unit () that is adjacent to the second light emitting unit () with sandwiching a second charge generating layer (B) and includes a third light emitting layer (C), and in which differences of the total thickness of the first light emitting unit () and the total thickness of the third light emitting unit () with the total thickness of the second light emitting unit () are 30 nm to 70 nm.

Organic electroluminescent element and lighting device

Provided is an organic electroluminescent element that can obtain white light with excellent color rendering properties and is particularly suitable for a light source of a lighting device. The organic electroluminescent element includes a plurality of light emitting units that are provided between a cathode and an anode and include at least a light emitting layer made of an organic compound. White light emitted from the plurality of light emitting units has a continuous emission spectrum (S) in a wavelength range of at least 380 nm to 780 nm. The emission spectrum (S) includes one peak wavelength (p) in a red wavelength range (R) of 600 nm to 640 nm, one peak wavelength (p) in a green wavelength range G of 500 nm to 540 nm, and two peak wavelengths (p) and (p) in a blue wavelength range B of 440 nm to 490 nm.

Growing community of inventors

Yonezawa, Japan

Mitsuru Morimoto