Kabushiki Kaisha Toyota Jidoshokki

Haruyuki Ishikawa

Norihito Takeuchi

Yoshifumi Kato

Hiroyasu Kawauchi

Fumikazu Isogai

Mikio Yoshida

Hiroyuki Miura

An organic EL element that is an electroluminescence element has at least an organic layer held between a pair of electrodes. At least an electrode made of material having a higher volume resistivity, of the pair of electrodes, is formed in a flat form. The organic layer is provided with a plurality of non-light emitting portions. The non-light emitting portions are provided so that a larger number of non-light emitting portions exist per unit area at a position physically closer to the position of a terminal portion at which the electrode made of material having the higher volume resistivity is connected to an external connection terminal. As a result, the level of current passing per unit area is substantially uniform at each position on the element.

Electric field light emitting element

A transparent substrate used for an area light emitting device. The transparent substrate comprises a light incidence surface and a light exit surface opposite to the light incidence surface. A plurality of recesses are formed on the light exit surface bulged towards the light incidence surface. Each recess has a shape approximately corresponding to a portion of an oval sphere. Each recess perimeter on the light exit surface is approximately circle. Each recess is separately formed from other recesses.

Transparent substrate for area light emitting device, a method for producing transparent substrate, and area light emitting device and liquid crystal display device

Growing community of inventors

Kariya, Japan

Haruyuki Ishikawa