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US 2003/0146446 A1Published application
Light-emitting device and electric apparatus
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.
Claims48
A light-emitting device comprising:
- an electroluminescence element having an anode and a cathode each of which is a conductive film that is transparent or semitransparent to visible light;
- and
- a light shield film provided adjacent to said electroluminescence element.
A light-emitting device comprising:
- an electroluminescence element having an anode and a cathode each of which is a conductive film that is transparent or semitransparent to visible light;
- and
- a light shield film provided above or below said electroluminescence element.
A light-emitting device comprising:
- an electroluminescence element having an anode and a cathode each of which is a conductive film that is transparent or semitransparent to visible light;
- and
- a light shield film provided above or below said electroluminescence element with an insulating film interposed therebetween.
A light-emitting device comprising:
- an anode and a cathode each of which is a conductive film that is transparent or semitransparent to visible light, and an electroluminescence layer formed therebetween;
- wherein a light shield film is disposed adjacent to said electroluminescence layer with one of said cathode or said anode interposed therebetween.
A light-emitting device comprising:
- an anode, a cathode, and an electroluminescence layer between said anode and said cathode;
- and
- a light shield film formed adjacent to said electroluminescence layer with one of said cathode or said anode interposed therebetween,
- wherein said cathode comprises a first layer in contact with said electroluminescence layer and a second layer in contact with said first layer, and
- wherein said first layer comprises a metal containing a group-1 or group-2 element in the periodic table, and said second layer comprises an oxide conductive film.
2 more elements
A light-emitting device comprising:
- a light shield film formed over a substrate;
- an anode formed on said light shield film;
- an electroluminescence layer formed on said anode;
- and
- a cathode formed on said electroluminescence layer,
- wherein said cathode comprises a first layer in contact with said electroluminescence layer and a second layer, and
- wherein said first layer comprises a metal containing a group-1 or group-2 element in the periodic table, and said second layer comprises an oxide conductive film.
4 more elements
A light-emitting device comprising:
- a light shield film formed over a substrate;
- a cathode formed on said light shield film;
- an electroluminescence layer formed on said cathode;
- and
- an anode formed on said electroluminescence layer,
- wherein said cathode comprises a first layer in contact with said electroluminescence layer and a second layer in contact with said light shield film,
- wherein said first layer comprises a metal containing a group-1 or group-2 element in the periodic table, and said second layer comprises an oxide conductive film.
4 more elements
A light-emitting device comprising:
- an anode formed over a substrate;
- an electroluminescence layer formed on said anode;
- a cathode formed on said electroluminescence layer;
- and
- a light shield film formed on said cathode,
- wherein said cathode comprises a first layer in contact with said electroluminescence layer and a second layer in contact with said light shield film, and
- wherein said first layer comprises a metal containing a group-1 or group-2 element in the periodic table, and said second layer comprises an oxide conductive film.
4 more elements
A light-emitting device comprising:
- a cathode formed over a substrate;
- an electroluminescence layer formed on said cathode;
- an anode formed on said electroluminescence layer;
- and
- a light shield film formed on said anode,
- wherein said cathode comprises a first layer in contact with said electroluminescence layer and a second layer, and
- wherein said first layer comprises a metal containing a group-1 or group-2 element in the periodic table, and said second layer comprises an oxide conductive film.
4 more elements
Dependencies are inferred from the claim text.