Panasonic Corporation

Yuko Matsuhisa

Takao Miyai

Hiroyuki Sasaki

Shingo Houzumi

Takeo Shirai

Koki Fujihara

Hiroya Tsuji

Nobuhiro Ide

Norihiro Ito

Provided is a light-emitting device exhibiting a high light-emission efficiency and moreover may utilize an external light radiating from the back side. A light-emitting device has a light-emitting element and a reflective layer reflecting light emitted from the light-emitting element. The reflective layer has a first layer constituted from a liquid crystal having a helical structure; a second layer disposed on opposite side of the first layer from the light-emitting element, and constituted from a liquid crystal having a helical structure with the same twisting direction as the first layer; and a third layer interposed therebetween to divide a light transmitted through the third layer itself into two intrinsic polarized lights causing a phase difference between the two intrinsic polarized lights.

Light emitting device

Electroluminescence module

An organic luminescent element comprises a substrate, an organic electroluminescence element formed on one surface thereof and having a light-emitting section emitting light to the substrate, and a lens attached on the other surface of the substrate. A refraction index of the lens is &#x2267; that of the substrate. An area of the light-emitting section, parallel to the substrate's surface, is smaller than an area of the substrate on which the lens is attached. An angle &#x3b8; between a line perpendicular to the substrate's surface in a direction from the light-emitting section toward the substrate and a straight line connecting an end of the light-emitting section and an end of the lens, is set to be &#x2267;60&#xb0;.

Organic luminescent element

[Problem] The present invention aims to provide an electroluminescence device with an improved intermediate layer, for achieving a superior durability and sustainability performance thereof. [Solution] The present invention refers to organic electroluminescence devices having a plurality of light emitting layersbetween an anodeand a cathodewith the intermediate layerbeing interposed between two of the light emitting layers. The intermediate layercomprises one layerselected from a group consisting of a charge transfer complex layer made of a charge transfer complex, a metal layer made of a metal having a work function of 3.7 eV or less, and a metal compound layer made of a compound of the metal; an electrically conductive material-containing light transmissive layer; a charge transport organic material layerformed of a charge transport organic material; and a hole injection material layerformed of a hole injection material, which are superimposed in this order. The charge transport material layeris formed to have a thickness in a range of 0.5 nm to 30 nm.

Organic electroluminescence device and method of fabricating the same

Growing community of inventors

Osaka, Japan

Yuko Matsuhisa