Light-emitting module, light-emitting panel, and lighting device
First Claim
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1. A light-emitting module comprising:
- a light-emitting element;
a positive temperature coefficient thermistor; and
a substrate between the light-emitting element and the positive temperature coefficient thermistor,wherein the light-emitting element includes a first electrode, a layer including a light-emitting organic compound over the first electrode and a second electrode over the layer including the light-emitting organic compound,wherein the positive temperature coefficient thermistor includes a third electrode,wherein the light-emitting element and the positive temperature coefficient thermistor overlap each other,wherein the light-emitting element is configured to be supplied with electric power through the positive temperature coefficient thermistor,wherein the positive temperature coefficient thermistor is configured to interrupt or inhibit supply of the electric power to the light-emitting element,wherein the substrate comprises an opening, andwherein the first electrode of the light-emitting element is electrically connected to the third electrode of the positive temperature coefficient thermistor through the opening of the substrate.
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Abstract
An object is to provide a light-emitting module in which a light-emitting element suffering a short-circuit failure does not cause wasteful electric power consumption. Another object is to provide a light-emitting panel in which a light-emitting element suffering a short-circuit failure does not allow the reliability of an adjacent light-emitting element to lower. Focusing on heat generated by a light-emitting element suffering a short-circuit failure, provided is a structure in which electric power is supplied to a light-emitting element through a positive temperature coefficient thermistor (PTC thermistor) thermally coupled with the light-emitting element.
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Citations
16 Claims
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1. A light-emitting module comprising:
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a light-emitting element; a positive temperature coefficient thermistor; and a substrate between the light-emitting element and the positive temperature coefficient thermistor, wherein the light-emitting element includes a first electrode, a layer including a light-emitting organic compound over the first electrode and a second electrode over the layer including the light-emitting organic compound, wherein the positive temperature coefficient thermistor includes a third electrode, wherein the light-emitting element and the positive temperature coefficient thermistor overlap each other, wherein the light-emitting element is configured to be supplied with electric power through the positive temperature coefficient thermistor, wherein the positive temperature coefficient thermistor is configured to interrupt or inhibit supply of the electric power to the light-emitting element, wherein the substrate comprises an opening, and wherein the first electrode of the light-emitting element is electrically connected to the third electrode of the positive temperature coefficient thermistor through the opening of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A light-emitting module comprising:
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a light-emitting element; a first positive temperature coefficient thermistor; a second positive temperature coefficient thermistor electrically directly connected in series to the first positive temperature coefficient thermistor; and a substrate between the light-emitting element and each of the first positive temperature coefficient thermistor and the second positive temperature coefficient thermistor, wherein the light-emitting element includes a first electrode, a layer including a light-emitting organic compound over the first electrode and a second electrode over the layer including the light-emitting organic compound, wherein each of the first positive temperature coefficient thermistor and the second positive temperature coefficient thermistor includes a third electrode, wherein the light-emitting element overlaps with each of the first positive temperature coefficient thermistor and the second positive temperature coefficient thermistor, wherein the light-emitting element is configured to be supplied with electric power through the first positive temperature coefficient thermistor and the second positive temperature coefficient thermistor, wherein the first positive temperature coefficient thermistor and the second positive temperature coefficient thermistor are configured to interrupt or inhibit supply of the electric power to the light-emitting element, wherein the substrate comprises an opening, and wherein the first electrode of the light-emitting element is electrically connected to the third electrode of each of the first positive temperature coefficient thermistor and the second positive temperature coefficient thermistor through the opening of the substrate. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification