公开(公告)号：US09553278B2

公开(公告)日：2017-01-24

申请号：US14403681

申请日：2013-05-30

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Varutt Kittichungchit ,  Kazuyuki Yamae

IPC: H01L51/54 ,  H01L51/50 ,  H01L51/52

CPC classification number: H01L51/5044 ,  H01L51/504 ,  H01L51/5278

Abstract: The disclosure relates to an organic electroluminescence element including an organic layer including multiple light-emitting layers. The light-emitting layers include a blue light-emitting layer including a blue light-emitting dopant. In a case where emission color of the organic electroluminescence element operated at an operation temperature for a stable state is represented in a CIE1931 chromaticity coordinate system, when coordinate point A of the emission color at an early stage of use and coordinate point B of the emission color deteriorated by use are represented by (x1, y1) and (x2, y2) respectively, a relation of y2≧y1 is satisfied. When amounts of changes in x and y values from coordinate point A to coordinate point B are represented by equations of Δx=x2−x1 and Δy=y2−y1 respectively, a relation of Δy≧Δx is satisfied. It can be made difficult to perceive change in emission color and lifetime can be prolonged

Abstract translation: 本公开涉及包括包含多个发光层的有机层的有机电致发光元件。 发光层包括蓝色发光掺杂剂蓝色发光层。 在CIE1931色度坐标系中表示在稳定状态的操作温度下操作的有机电致发光元件的发光颜色的情况下，使用早期的发光颜色的坐标点A和发光的坐标点B 通过使用恶化的颜色分别由（x1，y1）和（x2，y2）表示，满足y2≥y1的关系。 当从坐标点A到坐标点B的x和y值的变化量分别由Δx= x2-x1和Δy= y2-y1的等式表示时，满足Δy≥Δx的关系。 可以使发现颜色变化和寿命变得困难

公开(公告)号：US09786859B2

公开(公告)日：2017-10-10

申请号：US14787337

申请日：2014-05-13

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuyuki Yamae ,  Hiroya Tsuji ,  Varutt Kittichungchit

IPC: H01L29/08 ,  H01L51/50 ,  H01L51/52 ,  C09K11/06 ,  H01L27/32

CPC classification number: H01L51/504 ,  C09K11/06 ,  H01L27/3209 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5044 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/5237 ,  H01L51/5268 ,  H01L2251/5307 ,  H01L2251/5361 ,  H01L2251/5376

Abstract: An organic electroluminescent element including at least three light-emitting units. The at least three light-emitting units include one or more short-wavelength light-emitting units having a weighted average emission wavelength λS of 380 or more and less than 550 nm, and two or more long-wavelength light-emitting units having a weighted average emission wavelength λS of 550 nm or more and 780 nm or less. The two or more long-wavelength light-emitting units are greater in number than the one or more short-wavelength light-emitting units.

公开(公告)号：US20150171360A1

公开(公告)日：2015-06-18

申请号：US14403681

申请日：2013-05-30

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Varutt Kittichungchit ,  Kazuyuki Yamae

IPC: H01L51/50

CPC classification number: H01L51/5044 ,  H01L51/504 ,  H01L51/5278

Abstract: The disclosure relates to an organic electroluminescence element including an organic layer including multiple light-emitting layers. The light-emitting layers include a blue light-emitting layer including a blue light-emitting dopant. In a case where emission color of the organic electroluminescence element operated at an operation temperature for a stable state is represented in a CIE1931 chromaticity coordinate system, when coordinate point A of the emission color at an early stage of use and coordinate point B of the emission color deteriorated by use are represented by (x1, y1) and (x2, y2) respectively, a relation of y2≧y1 is satisfied. When amounts of changes in x and y values from coordinate point A to coordinate point B are represented by equations of Δx=x2−X1 and Δy=y2−y1 respectively, a relation of Δy≧Δx is satisfied. It can be made difficult to perceive change in emission color and lifetime can be prolonged

Abstract translation: 本公开涉及包括包含多个发光层的有机层的有机电致发光元件。 发光层包括蓝色发光掺杂剂蓝色发光层。 在CIE1931色度坐标系中表示在稳定状态的操作温度下操作的有机电致发光元件的发光颜色的情况下，使用早期的发光颜色的坐标点A和发光的坐标点B 通过使用恶化的颜色分别由（x1，y1）和（x2，y2）表示，满足y2≥y1的关系。 当从坐标点A到坐标点B的x和y值的变化量分别由＆Dgr; x = x2-X1和＆Dgr; y = y2-y1的等式表示时，＆Dgr;y≥＆Dgr; x的关系为 满意。 可以使发现颜色变化和寿命变得困难

公开(公告)号：US09748313B2

公开(公告)日：2017-08-29

申请号：US14891505

申请日：2014-05-15

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hiroya Tsuji ,  Kazuyuki Yamae ,  Satoshi Ohara ,  Varutt Kittichungchit

IPC: H01L27/32 ,  H01L51/50 ,  C09K11/06 ,  H01L51/00

CPC classification number: H01L27/3209 ,  C09K11/06 ,  C09K2211/10 ,  C09K2211/1011 ,  C09K2211/1029 ,  C09K2211/1088 ,  C09K2211/185 ,  H01L51/005 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5044

Abstract: The objective is to provide an organic electroluminescent element with an improved luminous efficiency. The organic electroluminescent element has a structure in which a first light-emitting unit containing a phosphorescent red light-emitting material, a second light-emitting unit containing a phosphorescent yellow light-emitting material, and a third light-emitting unit containing a fluorescent blue light-emitting material are stacked with interlayers in-between. A peak emission wavelength of the phosphorescent yellow light-emitting material is in a range of 530 nm to 570 nm. A peak emission wavelength of the fluorescent blue light-emitting material is in a range of 440 nm to 480 nm. The organic electroluminescent element has a ratio of a yellow emission intensity to a blue emission intensity in a range of 1.0 to 2.0. The organic electroluminescent element further has a ratio of a red emission intensity to the blue emission intensity in a range of 1.5 to 3.0.

公开(公告)号：US20150279909A1

公开(公告)日：2015-10-01

申请号：US14437517

申请日：2013-10-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroya Tsuji ,  Satoshi Ohara ,  Varutt Kittichungchit

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/50

CPC classification number: H01L27/3209 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5218 ,  H01L51/5221 ,  H01L51/5234 ,  H01L51/5268 ,  H01L2251/5361 ,  H01L2251/5376

Abstract: An organic electroluminescence element has a multi-unit structure which includes a first light-emitting unit, an intermediate layer and a second light-emitting unit. A light-emitting layer of the first light-emitting unit includes a blue light-emitting material. The second light-emitting unit has a stacked structure of light-emitting layers in which a red light-emitting layer including a red light-emitting material and a green light-emitting layer including a green light-emitting material are stacked. One of the red light-emitting layer and the green light-emitting layer is closer to the positive electrode than the other of the red light-emitting layer and the green light-emitting layer, and includes a hole-transporting material as a host material. The other of the red light-emitting layer and the green light-emitting layer is closer to the negative electrode than the one of the red light-emitting layer and the green light-emitting layer, and includes an electron-transporting material as a host material.

Abstract translation: 有机电致发光元件具有包括第一发光单元，中间层和第二发光单元的多单元结构。 第一发光单元的发光层包括蓝色发光材料。 第二发光单元具有发光层的叠层结构，其中堆叠包括红色发光材料的红色发光层和包括绿色发光材料的绿色发光层。 红色发光层和绿色发光层中的一个比红色发光层和绿色发光层中的另一个更靠近正极，并且包括作为主体材料的空穴传输材料 。 红色发光层和绿色发光层中的另一方比红色发光层和绿色发光层中的一方更靠近负极，并且包括电子传输材料作为主体 材料。