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US 11,380,828 B2Granted
Light-emitting device
AssigneeEpistar Corporation
InventorsMin-Hsun Hsieh, Shih-An Liao
Life of this patent
Estimating the term…
Abstract
A light-emitting device includes a carrier, a light-emitting unit disposed on the carrier, a reflective element arranged on the light-emitting unit, and an optical element arranged on the carrier and surrounding the light-emitting unit.
Claims20
A light-emitting apparatus, comprising:
- a substrate;
- and
- a plurality of the light-emitting devices arranged in a form of a matrix on the substrate;
- wherein each light-emitting device in the plurality of the light-emitting devices comprises:
- a carrier comprising a mirror reflection surface and a bottom surface opposite to the mirror reflection surface;
- a light-emitting unit arranged on the mirror reflection surface;
- a reflective layer arranged on the light-emitting unit, and having a top surface and a side surface;
- and
- a first optical structure surrounding the light-emitting unit and the reflective layer,
- wherein the first optical structure comprises a topmost end higher than the light-emitting unit and lower than the top surface.
7 more elements
A light-emitting apparatus, comprising:
- a substrate;
- and
- a plurality of the light-emitting devices arranged in a form of a matrix on the substrate;
- wherein each light-emitting device in the plurality of the light-emitting devices comprises:
- a carrier comprising a mirror reflection surface and a bottom surface opposite to the mirror reflection surface;
- a light-emitting unit arranged on the mirror reflection surface;
- a reflective layer arranged on the light-emitting unit, and having a top surface and a side surface;
- a first optical structure surrounding the light-emitting unit and the reflective layer;
- a virtual center line;
- and
- a light intensity distribution being substantially symmetrical with the virtual center line;
- wherein the light intensity distribution has a maximum value on two sides within an angle range between 40° and 60° with respect to the virtual center line.
9 more elements
Dependencies are inferred from the claim text.