Organic electro-luminescence element and the manufacturing method thereof
AssigneeSeiko Epson Corporation
InventorIchio Yudasaka
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Abstract
The invention increases the outgoing efficiency of light generated in an organic luminous layer of an organic electroluminescence element without decreasing the numerical aperture. A light-transmissive anode electrode layer, an organic luminous layer, and a light-reflective cathode layer are provided on the entire surface of one pixel region. On the anode layer, the organic luminous layer, and the cathode layer, slopes are installed protruding from the anode layer side to the cathode layer side. By this, light generated in the organic luminous layer, and irradiated in parallel to a cumulate surface of a cumulate body, is reflected by the slope on the boundary between the organic luminous layer and the cathode layer and exits toward the anode layer side.
Claims10
An organic electroluminescence element, comprising:
- a first electrode layer;
- a second electrode layer;
- and
- at least one organic thin film layer containing an organic luminous layer disposed between the first electrode layer and the second electrode layer,
- the first electrode layer, the second electrode layer and the organic luminous layer forming a cumulate body with a flat surface,
- the first and second electrode layers having slopes that are arranged substantially around the flat surface,
- at least one of the first and second electrode layers being formed on a convex section, and
- a light generated in the organic layer being reflected by the slope of the second electrode layer and going out to the side of the first electrode layer.
An organic electroluminescence element comprising:
- a first electrode layer;
- a second electrode layer;
- and
- at least one organic thin film layer containing an organic luminous layer disposed between the first electrode layer and the second electrode layer,
- the first electrode layer, the second electrode layer and the organic luminous layer forming a cumulate body with a flat surface,
- the first and second electrode layers having slopes that are arranged substantially around the flat surface,
- the slopes being formed on rim sides of a pixel, and
- the slopes falling outwardly from a pixel region.
Dependencies are inferred from the claim text.