公开(公告)号：US20160104749A1

公开(公告)日：2016-04-14

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

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.

Abstract translation: 目的是提供具有改善的发光效率的有机电致发光元件。 有机电致发光元件具有这样的结构，其中包含磷光红色发光材料的第一发光单元，包含磷光黄色发光材料的第二发光单元和包含荧光蓝色的第三发光单元 发光材料之间夹有中间层。 磷光黄色发光材料的峰值发射波长在530nm至570nm的范围内。 荧光蓝色发光材料的峰值发射波长在440nm至480nm的范围内。 有机电致发光元件的黄色发光强度与蓝色发光​​强度的比例为1.0〜2.0。 有机电致发光元件还具有在1.5〜3.0的范围内的红色发光强度与蓝色发光​​强度的比率。

公开(公告)号：US20160064682A1

公开(公告)日：2016-03-03

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: H01L51/50 ,  H01L51/52

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.

Abstract translation: 一种包括至少三个发光单元的有机电致发光元件。 所述至少三个发光单元包括具有380以上且小于550nm的加权平均发射波长λS的一个或多个短波长发光单元，以及具有加权平均发射波长λS的两个或更多个长波长发光单元 平均发射波长λS为550nm以上且780nm以下。 两个以上的长波长发光单元的数量比一个以上的短波长发光单元大。