Kabushiki Kaisha Toshiba

Kimito Sakai

Katsuyuki Naito

Rei Hasegawa

Kazushige Yamamoto

Yutaka Nakai

Naoko Kihara

Shintaro Enomoto

Hiroki Iwanaga

Akio Amano

Yasushi Mori

Yuko Imamura

An electro luminescence display device is provided, including a plurality of pixels arranged in a two dimensional direction, each pixel having a plurality of different kinds of organic electro luminescence elements differing from each other in the color of the emitted light, and each of the organic electro luminescence elements having an anode, a cathode, and a polymer light-emitting layer located between the anode and the cathode, wherein the polymer light-emitting layer emitting light of at least one color includes a nonionic surfactant having a fluorine-substituted alkyl group containing, e.g., an alkyl silyl group.

Organic electro luminescence display device

There is disclosed an organic electro luminescence display device comprising a two-dimensional array of pixels comprising organic electro luminescence elements capable of emitting a of color or different plural colors, each of the organic electro luminescence elements being provided with an anode, a cathode, a polymeric luminescence layer located between the anode and the cathode, and a hole injection layer. The hole injection layer is constituted by solid matters containing a donor molecule comprising polythiophene and/or a derivative thereof, and an acceptor molecule comprising polystyrenesulfonic acid and/or a derivative thereof, a concentration of sulfate ion in the hole injection layer is 125 ppm or less, and components having a molecular weight of 110,000 or less is 35% or less based on an entire solid matters, the molecular weight being converted as sodium polystyrenesulfonate in an aqueous gel permeation chromatography measured by using UV of 254 nm in wavelength.

Ink for forming a hole injection layer of organic EL display devices and manufacturing method thereof, organic EL display devices, and manufacturing method of the same

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Funabashi, Japan

Kimito Sakai