Light-emitting device
AssigneeNichia Corporation
InventorTomonori Miyoshi
Life of this patent
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Abstract
A light-emitting device includes: a substrate having an upper surface; at least one light-emitting element on or above the substrate, the at least one light-emitting element having a rectangular shape in a plan view from above the light-emitting device and having an upper surface serving as a light-emitting surface of the at least one light-emitting element; a plate-shaped light-transmissive member having a rectangular shape in a plan view from above the light-emitting device and having a lower surface that faces the upper surface of the at least one light-emitting element; and a light-guiding member that is disposed between the light-emitting element and the light-transmissive member.
Claims8
A light-emitting device comprising:
- a substrate having an upper surface;
- at least one light-emitting element on or above the substrate, the at least one light-emitting element having a rectangular shape in a plan view from above the light-emitting device and having an upper surface serving as a light-emitting surface of the at least one light-emitting element;
- a plate-shaped light-transmissive member having a rectangular shape in a plan view from above the light-emitting device and having a lower surface that faces the upper surface of the at least one light-emitting element;
- and
- a light-guiding member that is disposed between the light-emitting element and the light-transmissive member,
- wherein the upper surface of the at least one light-emitting element with the rectangular shape has a first lateral side and a second lateral side opposite to each other, and a third lateral side and a fourth lateral side opposite to each other,
- wherein an upper surface of the light-transmissive member with the rectangular shape has a first lateral side and a second lateral side opposite to each other, and a third lateral side and a fourth lateral side opposite to each other,
- wherein the light-transmissive member is disposed on or above the at least one light-emitting element such that, in a plan view from above the light-emitting device, the first lateral side of the upper surface of the light-transmissive member is outside the first lateral side of the upper surface of the at least one light-emitting element, and the second lateral side of the upper surface of the light-transmissive member is inside the second lateral side of the upper surface of the at least one light-emitting element,
- wherein the light-guiding member has a first side surface which connects a first lateral side of the lower surface of the light-transmissive member which is opposite to the first lateral side of the upper surface of the light-transmissive member with the at least one light-emitting element;
- and a second side surface which connects a second lateral side of the lower surface of the light-transmissive member which is opposite to the second lateral side of the upper surface of the light-transmissive member with the at least one light-emitting element, and
- wherein an inclined angle of the first side surface of the light-guiding member with respect to the upper surface of the substrate is greater than an inclined angle of the second side surface of the light-guiding member with respect to the upper surface of the substrate.
Dependencies are inferred from the claim text.