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US 7,679,092 B2Granted
Light-emitting device having an electroluminescence element
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Jun Koyama
Life of this patent
Estimating the term…
Abstract
A light shield film is provided adjacent to an anode of an EL element that consists of the anode, an EL layer, and a cathode. The anode and the cathode are transparent or semitransparent to visible light and hence transmit EL light. With this structure, ambient light is absorbed by the light shield film and does not reach an observer. This prevents an external view from appearing on the observation surface.
Claims24
A camera comprising:
- an image receiving section;
- and
- a display unit,
- the display unit comprising:
- an electroluminescence element formed over a substrate, the electroluminescence element comprising a first electrode, a second electrode, and an electroluminescence layer formed between the first and second electrodes;
- a cluster comprising a group-1 or group-2 element in the periodic table, formed between the electroluminescence layer and the first electrode;
- a light shield film formed between said electroluminescence element and said substrate;
- and
- a first insulating film formed between said electroluminescence layer and said light shield film,
- wherein the first electrode is transparent, and
- wherein said light shield film is in contact with said electroluminescence element.
8 more elements
A cellular phone comprising:
- a sound output section;
- a sound input section;
- and
- an display unit,
- the display unit comprising:
- an electroluminescence element formed over a substrate, the electroluminescence element comprising a first electrode, a second electrode, and an electroluminescence layer formed between the first and second electrodes;
- a cluster comprising a group-1 or group-2 element in the periodic table, formed between the electroluminescence layer and the first electrode;
- a light shield film formed between said electroluminescence element and said substrate;
- and
- a first insulating film formed between said electroluminescence layer and said light shield film,
- wherein the first electrode is transparent, and
- wherein said light shield film is in contact with said electroluminescence element.
9 more elements
A computer comprising:
- manipulation switches;
- and
- a display unit,
- the display unit comprising:
- an electroluminescence element formed over a substrate, the electroluminescence element comprising a first electrode, a second electrode, and an electroluminescence layer formed between the first and second electrodes;
- a cluster comprising a group-1 or group-2 element in the periodic table, formed between the electroluminescence layer and the first electrode;
- a light shield film formed in contact with and between said electroluminescence element and said substrate;
- and
- a first insulating film formed between said electroluminescence layer and said light shield film,
- wherein the first electrode is transparent, and
- wherein said light shield film is in contact with said electroluminescence element.
8 more elements
A light-emitting device comprising:
- an electroluminescence element formed over a substrate, the electroluminescence element comprising a first electrode, a second electrode, and an electroluminescence layer formed between the first and second electrodes;
- a cluster comprising a group-1 or group-2 element in the periodic table, formed between the electroluminescence layer and the first electrode;
- and
- a light shield film formed between said electroluminescence element and said substrate;
- and
- a first insulating film formed between said electroluminescence layer and said light shield film,
- wherein the first electrode is transparent, and
- wherein said light shield film is in contact with said electroluminescence element.
5 more elements
Dependencies are inferred from the claim text.