Organic electroluminescent lighting system provided with an insulating layer containing fluorescent material
AssigneeSemiconductor Energy Labortory Co., Ltd.
InventorsSatoshi Seo, Yasuyuki Arai
Life of this patent
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Abstract
It is an object of the present invention to provide a lighting system having favorable luminance uniformity in a light-emitting region when the lighting system has large area. According to one feature of the invention, a lighting system comprises a first electrode, a second electrode, a layer containing a light-emitting substance formed between the first electrode and the second electrode, an insulating layer which is formed over a substrate in a grid form and contains a fluorescence substance, and a wiring formed over the insulating layer. The insulating layer and the wiring are covered with the first electrode so that the first electrode and the wiring are in contact with each other.
Claims17
A liquid crystal display comprising;
- a liquid crystal layer;
- a first electrode formed over a substrate,
- a second electrode,
- a layer containing a light-emitting substance provided between the first electrode and the second electrode,
- an insulating layer which is formed over the first electrode in a grid form and contains a fluorescence substance, and
- a wiring,
- wherein the insulating layer includes a depression portion and an opening provided in the depression portion,
- wherein the wiring is provided in the depression portion of the insulating layer and is connected to the first electrode through the opening and to the layer containing the light-emitting substance,
- wherein the wiring is in contact with the layer containing the light-emitting substance,
- wherein a bottom surface of the insulating layer is in contact with only a top surface of the first electrode, and
- wherein the insulating layer is formed only over the first electrode.
A lighting system comprising:
- a first electrode formed over a substrate,
- a second electrode,
- a layer containing a light-emitting substance provided between the first electrode and the second electrode,
- an insulating layer which is formed over the first electrode in a grid form and contains a fluorescence substance, and
- a wiring,
- wherein the insulating layer includes a depression portion and an opening provided for the depression portion,
- wherein the wiring is provided in the depression portion of the insulating layer and is connected to the first electrode through the opening and to the layer containing the light-emitting substance,
- wherein the wiring is in contact with the layer containing the light-emitting substance,
- wherein a bottom surface of the insulating layer is in contact with only a top surface of the first electrode, and
- wherein the insulating layer is formed only over the first electrode.
A liquid crystal display comprising:
- a liquid crystal layer;
- a substrate;
- a first electrode provided over the substrate;
- an insulating layer having a depression and an opening and provided over the first electrode;
- a layer containing a light-emitting substance;
- a wiring provided in the depression and connected to the first electrode through the opening and to the layer containing the light-emitting substance;
- and
- a second electrode provided over the layer containing the light-emitting substance
- wherein the first electrode, the insulating layer, and the wiring are covered with the layer containing the light-emitting substance,
- wherein the wiring is in contact with the layer containing the light-emitting substance,
- wherein a bottom surface of the insulating layer is in contact with only a top surface of the first electrode, and
- wherein the insulating layer is formed only over the first electrode wherein the insulating layer comprises a fluorescent substance.
A lighting system comprising:
- a substrate;
- a first electrode provided over the substrate;
- an insulating layer having a depression and an opening and provided over the first electrode;
- a layer containing a light-emitting substance;
- a wiring provided in the depression and connected to the first electrode though the opening and to the layer containing the light-emitting substance;
- and
- a second electrode provided over the layer containing the light-emitting substance,
- wherein the first electrode, the insulating layer, and the wiring are covered with the layer containing the light-emitting substance,
- wherein the wiring is in contact with the layer containing the light-emitting substance,
- wherein a bottom surface of the insulating layer is in contact with only a top surface of the first electrode,
- wherein the insulating layer is formed only over the first electrode wherein the insulating layer comprises a fluorescent substance.
Dependencies are inferred from the claim text.