Matsushita Electric Industrial Co., Ltd.

Hitoshi Hisada

Mikiko Matsuo

Hisanori Sugiura

Tetsuya Satou

Yoshinobu Murakami

Ryuichi Shingae

Noboru Katakabe

Yoshio Kishimoto

Masaichiro Tatekawa

Masahiro Aizawa

Akira Kumon

Katsutoshi Ogawa

Junichi Nawama

Tetsuya Sato

A thin film EL device having high electroluminescent efficiency, a low operating voltage, and a long lifetime. A thin film EL device of the present invention uses, as a luminescent layer, a charge-transport luminescent material that has, within a molecule, a portion contributing to charge transport and a portion contributing to luminescence where at least two molecular orbitals contributing to luminescent transition are localized.

Thin film EL device

An organic light-emitting devicehas the constitution in which an emission regionbetween an anodeand a cathodeis laminated on a substrate. The emission regionincludes polymerA, luminous moleculesG which are material contributable to emission, and charge transport materialF. The luminous moleculesG and the charge transport materialF are high in concentration at a side close to the cathodeand low in concentration at a side close to the anodein a layer thickness direction of the emission region. The organic light-emitting device can be formed by luminous material, or luminous material and charge transport material being penetrated into polymer, or polymer in which charge transport material is dispersed, thus providing highly improved luminous efficiency and at the same time facilitating the patterning.

Light emitting element and producing method thereof, and display device and lighting device using the same

A thin film EL device is disclosed which includes a hole-injecting electrode, an electron-injecting electrode paired with the hole-injecting electrode, and a functional layer provided between the hole-injecting electrode and the electron-injecting electrode and emitting light by application of an electric field produced by the electrodes. The electron-injecting electrode contains at least two or more different metals having different work functions and a capturing substance for capturing a low work function metal, which is a metal other than a highest work function metal among the above-described metals, in its ionic state. This configuration prevents deterioration of the low work function metal, increasing the luminance and lifetime of the device.

Electrode and thin film EL device including the same and methods of fabricating the same and display device and lighting system including the thin film EL device

A thin film EL device having high electroluminescent efficiency, a low operating voltage, and a long lifetime. The thin film EL device uses, as a luminescent layer, a charge-transport luminescent material that has, within a molecule, a portion contributing to charge transport and a portion contributing to luminescence where at least two molecular orbitals contributing to luminescent transition are localized.

Thin film el device

Organic material for electroluminescent device and electroluminescent device using the same

A charging member for charging a photosensitive member from above toner in an electrophotographic process in which charging, exposure, development, and transfer steps are performed repeatedly and in which a step of cleaning toner remaining on a photosensitive member is eliminated, the charging member including: an electrically conductive charging wire which is disposed in contact with the photosensitive member; the charging wire forming an angle of less than 90.degree. with a direction of a rotational axis of the photosensitive member and is arranged at an interval in the direction of the rotational axis of the photosensitive member; and a power source for applying a pulse voltage to the charging wire, the pulse voltage having a polarity identical with that of the toner so as to vibrate the toner.

Electrophotographic charging device

Growing community of inventors

Toyonaka, Japan

Hitoshi Hisada