Display module with white light
First Claim
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1. A display module comprising:
- a light emitting device comprising;
a single crystal semiconductor substrate;
a substrate over the single crystal semiconductor substrate;
a pixel portion comprising a light emitting element and a first transistor electrically connected to the light emitting element, the light emitting element between the single crystal semiconductor substrate and the substrate, the light emitting element comprising;
a first electrode over the single crystal semiconductor substrate;
an EL layer over the first electrode; and
a second electrode over the EL layer;
a sealing agent between the single crystal semiconductor substrate and the substrate; and
a wiring over the single crystal semiconductor substrate, the wiring electrically connected to the pixel portion; and
a flexible printed circuit bonded to the wiring,wherein the EL layer is in contact with the first electrode in a light emitting region of the light emitting element,wherein a thickness of the first electrode in a region except the light emitting region is larger than a thickness of the first electrode in the light emitting region,wherein the first transistor comprises a channel formation region in the single crystal semiconductor substrate, andwherein the EL layer is capable of emitting white light.
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Abstract
A FET is formed on a semiconductor substrate, a curved surface having a radius of curvature is formed on an upper end of an insulation, a portion of a first electrode is exposed corresponding to the curved surface to form an inclined surface, and a region defining a luminescent region is subjected to etching to expose the first electrode. Luminescence emitted from an organic chemical compound layer is reflected by the inclined surface of the first electrode to increase a total quantity of luminescence taken out in a certain direction.
169 Citations
22 Claims
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1. A display module comprising:
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a light emitting device comprising; a single crystal semiconductor substrate; a substrate over the single crystal semiconductor substrate; a pixel portion comprising a light emitting element and a first transistor electrically connected to the light emitting element, the light emitting element between the single crystal semiconductor substrate and the substrate, the light emitting element comprising; a first electrode over the single crystal semiconductor substrate; an EL layer over the first electrode; and a second electrode over the EL layer; a sealing agent between the single crystal semiconductor substrate and the substrate; and a wiring over the single crystal semiconductor substrate, the wiring electrically connected to the pixel portion; and a flexible printed circuit bonded to the wiring, wherein the EL layer is in contact with the first electrode in a light emitting region of the light emitting element, wherein a thickness of the first electrode in a region except the light emitting region is larger than a thickness of the first electrode in the light emitting region, wherein the first transistor comprises a channel formation region in the single crystal semiconductor substrate, and wherein the EL layer is capable of emitting white light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 18, 19)
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8. An electronic device comprising:
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a light emitting device comprising; a single crystal semiconductor substrate; a substrate over the single crystal semiconductor substrate; a pixel portion comprising a light emitting element and a first transistor electrically connected to the light emitting element, the light emitting element between the single crystal semiconductor substrate and the substrate, the light emitting element comprising; a first electrode over the single crystal semiconductor substrate; an EL layer over the first electrode; and a second electrode over the EL layer; a sealing agent between the single crystal semiconductor substrate and the substrate; and a wiring over the single crystal semiconductor substrate, the wiring electrically connected to the pixel portion; a flexible printed circuit bonded to the wiring; and a control switch; wherein the EL layer is in contact with the first electrode in a light emitting region of the light emitting element, wherein a thickness of the first electrode in a region except the light emitting region is larger than a thickness of the first electrode in the light emitting region, wherein the first transistor comprises a channel formation region in the single crystal semiconductor substrate, and wherein the EL layer is capable of emitting white light. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21)
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22. A display module comprising:
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a light emitting device comprising; a single crystal semiconductor substrate; a substrate over the single crystal semiconductor substrate; a pixel portion comprising a light emitting element and a first transistor electrically connected to the light emitting element, the light emitting element between the single crystal semiconductor substrate and the substrate, the light emitting element comprising; a first electrode over the single crystal semiconductor substrate; an EL layer over the first electrode; and a second electrode over the EL layer; a sealing agent between the single crystal semiconductor substrate and the substrate; and a wiring over the single crystal semiconductor substrate, the wiring electrically connected to the pixel portion; and a flexible printed circuit bonded to the wiring, wherein the EL layer is in contact with the first electrode in a light emitting region of the light emitting element, wherein the first electrode comprises; a first electrode film comprising titanium; and a second electrode film comprising aluminum, wherein the first electrode film and the second electrode film have a different composition from each other, wherein the first transistor comprises a channel formation region in the single crystal semiconductor substrate, and wherein the EL layer is capable of emitting white light.
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Specification