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US 9,793,450 B2Granted
Light emitting apparatus having one or more ridge structures defining at least one circle around a common center
AssigneeSamsung Electronics Co., Ltd.
InventorYukika Yamada
Life of this patent
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Abstract
A light emitting device includes a light emitting device on a substrate; an encapsulation layer covering the light emitting device; and a texture layer on the encapsulation layer. A surface of the texture layer has a ridge structure. A radial cross section of the ridge structure has a triangular shape with a distal vertex relative to the encapsulation layer surface. The distal vertex has one or more altitude angles, and the one or more altitude angles are less than or equal to 40 degrees.
Claims17
A light emitting apparatus, comprising:
- a light emitting device on a substrate;
- an encapsulation layer covering the light emitting device;
- and
- a texture layer on the encapsulation layer, the texture layer including,
- at least one ridge structure defining at least one circle around a common center, the at least one ridge structure having a radial cross section, the radial cross section having a triangular shape, the triangular shape having a distal vertex that is distal from the encapsulation layer, and each altitude angle of the distal vertex being less than or equal to 40 degrees, respectively,
- wherein the texture layer has a thickness of approximately 2 mm, and the texture layer has a light transmittance, of light emitted by the light emitting device and transmitted to the texture layer through the encapsulation layer, of at least 70% with regard to light having a wavelength of 550 nm.
3 more elements
A light emitting apparatus, comprising:
- a light emitting device on a substrate;
- a first encapsulation layer covering the light emitting device;
- a second encapsulation layer on the first encapsulation layer;
- and
- a texture layer on the second encapsulation layer,
- wherein,
- a surface of the texture layer includes a plurality of concentric ridge structures,
- a radial cross section of each of the concentric ridge structures has a triangular shape in which an altitude line of a distal vertex of the triangular shape relative to the second encapsulation layer, and side surfaces forming the distal vertex, form altitude angles that are each less than or equal to 40 degrees, respectively,
- the texture layer is on at least 80% of an area of a surface of the second encapsulation layer, and
- the texture layer exposes a central portion of the surface, the central portion including the common center defined by the plurality of concentric ridge structures.
7 more elements
A light emitting apparatus, comprising:
- a light emitting device on a substrate;
- a first encapsulation layer covering the light emitting device;
- a second encapsulation layer on the first encapsulation layer;
- and
- a texture layer on the second encapsulation layer, the texture layer including,
- at least one ridge structure defining at least one circle around a common center, the at least one ridge structure having a radial cross section, the radial cross section having a triangular shape, the triangular shape having a distal vertex that is distal from the second encapsulation layer, and each altitude angle of the distal vertex being less than or equal to 40 degrees, respectively,
- wherein the texture layer is on at least 80% of an area of a surface of the second encapsulation layer, and the texture layer exposes a central portion of the surface, the central portion including the common center of the at least one circle defined by the at least one ridge structure.
4 more elements
Dependencies are inferred from the claim text.