Organic electroluminescence element and image forming apparatus or portable terminal unit using thereof

   
   

There are provided an organic electroluminescence element which is excellent in visibility and which can maintain a light emission performance with a high degree of efficiency, an image forming apparatus which is excellent in visibility and which can maintain a light emission performance with a high degree of efficiency, and a portable terminal unit which is lightweight and which has a long use life. The organic electroluminescence element incorporates at least, on a substrate, an anode for injecting holes, a luminous layer having a light emitting zone, a cathode for injecting electrons, wherein light radiated from the luminous layer is extracted through a surface opposed to the substrate, and an inverted V-like structure higher than the luminous layer is formed on at least a part of an element forming surface of the substrate.

Se proporciona un elemento orgánico del electroluminescence que sea excelente en visibilidad y que pueda mantener un funcionamiento ligero de la emisión con un alto grado de eficacia, una imagen que forma el aparato que es excelente en visibilidad y que puede mantener un funcionamiento ligero de la emisión con un alto grado de eficacia, y una unidad terminal portable que sea ligera y que tenga una vida larga del uso. El elemento orgánico del electroluminescence incorpora por lo menos, en un substrato, un ánodo para inyectar los agujeros, una capa luminosa que tiene una zona que emite ligera, un cátodo para inyectar electrones, en donde la luz irradiada de la capa luminosa se extrae a través de una superficie opuesta al substrato, e invertido V-como la estructura más arriba que la capa luminosa se forma en por lo menos una parte de un elemento que forma la superficie del substrato.

 
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