Light Emitting Device And Method of Manufacturing The Same
First Claim
1. A light emitting device comprising a pixel portion having a plurality of light emitting elements between a pair of substrates, at least one of the pair of substrates has transmittivity, the light emitting elements each comprising:
- a first electrode;
a layer comprising an organic compound over the first electrode; and
a second electrode over the layer comprising the organic compound;
whereinthe pair of substrates are fixed by a first sealing material disposed surrounding the pixel portion, and a second sealing material in contact with the first sealing material and covering the pixel portion; and
the first sealing material has openings in four comers.
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Accused Products
Abstract
A light emitting device having a structure in which oxygen and moisture are prevented from reaching light emitting elements, and a method of manufacturing the same, are provided. Further, the light emitting elements are sealed by using a small number of process steps, without enclosing a drying agent. The present invention has a top surface emission structure. A substrate on which the light emitting elements are formed is bonded to a transparent sealing substrate. The structure is one in which a transparent second sealing material covers the entire surface of a pixel region when bonding the two substrates, and a first sealing material (having a higher viscosity than the second sealing material), which contains a gap material (filler, fine particles, or the like) for protecting a gap between the two substrates, surrounds the pixel region. The two substrates are sealed by the first sealing material and the second sealing material. Further, reaction between electrodes of the light emitting elements (cathodes or anodes) and the sealing materials can be prevented by covering the electrodes with a transparent protective layer, for example, CaF2, MgF2, or BaF2.
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Citations
1 Claim
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1. A light emitting device comprising a pixel portion having a plurality of light emitting elements between a pair of substrates, at least one of the pair of substrates has transmittivity, the light emitting elements each comprising:
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a first electrode; a layer comprising an organic compound over the first electrode; and a second electrode over the layer comprising the organic compound; wherein the pair of substrates are fixed by a first sealing material disposed surrounding the pixel portion, and a second sealing material in contact with the first sealing material and covering the pixel portion; and the first sealing material has openings in four comers.
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Specification