Electroluminescence display device
First Claim
Patent Images
1. A semiconductor device comprising:
- a first substrate;
a second substrate over the first substrate, the second substrate being smaller than the first substrate so that the first substrate has a first region which overlaps with the second substrate and a second region which does not overlap with the second substrate;
a pixel portion in the first region, the pixel portion comprising a plurality of pixels between the first substrate and the second substrate;
a wiring over the first substrate, the wiring extending from the first region to the second region;
a flexible printed circuit connected to the wiring in the second region, the flexible printed circuit being configured to transmit an electrical signal to the pixel portion; and
a sealant covering the flexible printed circuit, a part of the second region which does not overlap with the flexible printed circuit, and a side surface of the second substrate,wherein the plurality of pixels each comprise;
a transistor; and
a light-emitting element over and electrically connected to the transistor, the light-emitting element comprising a white-emissive light-emitting layer which is configured to be coupled with a color filter so that the light-emitting element undergoes color display, andwhere a space surrounded by the first substrate, the second substrate, and the sealant is filled with a filler to which a drying agent is mixed.
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Abstract
Disclosed is an electroluminescence device having a substrate, a thin film transistor over the substrate, an insulating film over the thin film transistor, an electroluminescence element over the insulating film, a passivation film over the electroluminescence element, and a counter substrate over the passivation film. The electroluminescence element is configured to emit light through the counter substrate, and a space between the substrate and the counter substrate is filled with a filler. The electroluminescence device is featured by the tapered side surface of a gate electrode of the thin film transistor.
141 Citations
21 Claims
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1. A semiconductor device comprising:
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a first substrate; a second substrate over the first substrate, the second substrate being smaller than the first substrate so that the first substrate has a first region which overlaps with the second substrate and a second region which does not overlap with the second substrate; a pixel portion in the first region, the pixel portion comprising a plurality of pixels between the first substrate and the second substrate; a wiring over the first substrate, the wiring extending from the first region to the second region; a flexible printed circuit connected to the wiring in the second region, the flexible printed circuit being configured to transmit an electrical signal to the pixel portion; and a sealant covering the flexible printed circuit, a part of the second region which does not overlap with the flexible printed circuit, and a side surface of the second substrate, wherein the plurality of pixels each comprise; a transistor; and a light-emitting element over and electrically connected to the transistor, the light-emitting element comprising a white-emissive light-emitting layer which is configured to be coupled with a color filter so that the light-emitting element undergoes color display, and where a space surrounded by the first substrate, the second substrate, and the sealant is filled with a filler to which a drying agent is mixed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A semiconductor device comprising:
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a first substrate; a second substrate over the first substrate, the second substrate being smaller than the first substrate so that the first substrate has a first region which overlaps with the second substrate and a second region which does not overlap with the second substrate; a pixel portion in the first region, the pixel portion comprising a plurality of pixels between the first substrate and the second substrate; a wiring over the first substrate, the wiring extending from the first region to the second region; a flexible printed circuit connected to the wiring in the second region, the flexible printed circuit being configured to transmit an electrical signal to the pixel portion; a first sealant sandwiched between the first substrate and the second substrate and located in the first region; and a second sealant in contact with the first sealant and located in the second region, the second sealant covering the flexible printed circuit, a part of the second region which does not overlap with the flexible printed circuit, a side surface of the second substrate, and a side surface of the first sealant, wherein the plurality of pixels each comprise; a transistor; and a light-emitting element over and electrically connected to the transistor, the light-emitting element comprising a white-emissive light-emitting layer which is configured to be coupled with a color filter so that the light-emitting element undergoes color display, and where a space surrounded by the first substrate, the second substrate, and the first sealant is filled with a filler to which a drying agent is mixed. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A semiconductor device comprising:
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a first substrate; a second substrate over the first substrate, the second substrate being smaller than the first substrate so that the first substrate has a first region which overlaps with the second substrate and a second region which does not overlap with the second substrate; a pixel portion in the first region, the pixel portion comprising a plurality of pixels between the first substrate and the second substrate; a wiring over the first substrate, the wiring extending from the first region to the second region; a flexible printed circuit connected to the wiring in the second region, the flexible printed circuit being configured to transmit an electrical signal to the pixel portion; and a sealant covering a side surface of the second substrate, at least a part of the flexible printed circuit, and a part of the second region which does not overlap with the flexible printed circuit, wherein the plurality of pixels each comprise; a current control element comprising a plurality of transistors connected in parallel; and a light-emitting element over and electrically connected to the current control element, wherein the light-emitting element comprises; a transparent anode electrically connected to the current control element; a white-emissive light-emitting layer over the transparent anode; and a cathode over the white-emissive light-emitting layer, and where a space surrounded by the first substrate, the second substrate, and the sealant is filled with a filler to which a drying agent is mixed. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification