Kaneka Corporation

Takayuki Miyoshi

Katsuya Ouchi

Provided is an organic EL panel. A first conductive film, an organic functional film, a second conductive film, and a sealing film are provided on a substrate. The first conductive film includes a first main body, a first electrode pad, and a second electrode pad. The second conductive film includes a second main body, and a second electrode pad region extending from the second main body toward the first vertex. The second electrode pad region extends to a stretched region exposed from the sealing film which covers a light-emitting region. A first electrode conduction path surrounds at least half of the light-emitting region and connects the electrode pads. A circuit board is fixed near the first vertex. A first electrode wire is configured to adhere to the electrode pads. A second electrode wire is configured to adhere to the second electrode pad region in the stretched region.

Organic EL panel

With chemically-strengthened thin glass substrates provided with an alkali barrier film, if the light-absorbing or light-scattering nature of the alkali barrier film itself has lowered the light extraction efficiency, or if the surface of the alkali barrier film is insufficiently flat, there may consequently be an increase in leakage current of an organic EL element and a decrease in reliability, leaving room for improvement. Instead of such an alkali barrier film, by providing an organic EL panel with a barrier film of the present invention and also with an organic EL element on a chemically-strengthened thin glass substrate with a specific light extraction structure therebetween, the glass substrate having one principal surface that includes a smooth region of the present invention, a high-performance organic EL panel can be obtained without compromising the organic EL properties.

Growing community of inventors

Otsu, Japan

Takayuki Miyoshi