Display device, light-emitting device, lighting device, and electronic appliance
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsKaoru Hatano, Satoshi Seo, Yoshiaki Oikawa
Life of this patent
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Abstract
A light energy reuse type display device, light-emitting device, and lighting device with low power consumption, which efficiently convert light emitted from a light source (including light emission from a light-emitting element) into electric power, are provided. A photoelectric conversion element interposed between a pair of substrates functions as a color filter (a colored layer); thus, light emitted from a light source (including light emission from a light-emitting element) is efficiently converted into electric power, and a light energy reuse type display device, light-emitting device, and lighting device with low power consumption can be provided.
Claims20
A light-emitting device comprising:
- a first photoelectric conversion element, a light-emitting element, and a transistor which are provided between a pair of substrates,
- wherein the light-emitting element is electrically connected to the transistor,
- wherein the light-emitting element overlaps with the first photoelectric conversion element,
- wherein the first photoelectric conversion element comprises a colored layer having a transmitting property to light emitted from the light-emitting element in a specific wavelength band, and
- wherein the light is emitted from the light-emitting element through the colored layer.
A light-emitting device comprising:
- a first photoelectric conversion element and a light-emitting element which are provided between a pair of substrates,
- wherein the light-emitting element overlaps with the first photoelectric conversion element,
- wherein the first photoelectric conversion element comprises a colored layer having a transmitting property to light emitted from the light-emitting element in a specific wavelength band, and
- wherein the light is emitted from the light-emitting element through the colored layer.
A display device comprising:
- a light source;
- and
- a first photoelectric conversion element and a display element which are provided between a pair of substrates,
- wherein the light source overlaps with the first photoelectric conversion element,
- wherein the first photoelectric conversion element comprises a colored layer having a transmitting property to light emitted from the light source in a specific wavelength band, and
- wherein the light is emitted from the light source through the colored layer.
Dependencies are inferred from the claim text.