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US 2022/0020900 A1Published application
Light emitting device and module
AssigneeLextar Electronics Corporation
InventorsShiou-Yi KUO, Jian-Chin LIANG, Yu-Chun LEE, Fu-Hsin CHEN, Chih-Hao LIN
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Abstract
A light emitting device includes an LED die and a wavelength conversion layer. The LED die has a light emitting top surface and light emitting side surfaces. The wavelength conversion layer contains quantum dots and a photosensitive material, and is located on the light emitting top surface. A light emitting module including multiple light emitting devices is also disclosed.
Claims19
A light emitting device comprising:
- an LED die having a light emitting top surface and light emitting side surfaces;
- and
- a wavelength conversion layer containing quantum dots and a photosensitive material, and disposed on the light emitting top surface.
A light emitting module comprising:
- a substrate;
- a first blue LED die, a second blue LED die and a third blue LED die disposed on the substrate;
- a first wavelength conversion layer containing red quantum dots and a photosensitive material, and disposed over the first blue LED die such that the red quantum dots are excited to emit red lights;
- a second wavelength conversion layer containing green quantum dots and the photosensitive material, and disposed over the second blue LED die such that the green quantum dots are excited to emit green lights;
- a first blue color filter layer disposed over the first wavelength conversion layer, and aligned with both the first wavelength conversion layer and the first blue LED die;
- and
- a second blue color filter layer disposed over the second wavelength conversion layer, and aligned with both the second wavelength conversion layer and the second blue LED die.
4 more elements
A light emitting module comprising:
- a substrate;
- a first LED die, a second LED die and a third LED die disposed on the substrate;
- a first wavelength conversion layer containing red quantum dots and a photosensitive material, and disposed over the first LED die such that the red quantum dots are excited to emit red lights;
- a second wavelength conversion layer containing green quantum dots and the photosensitive material, and disposed over the second LED die such that the green quantum dots are excited to emit green lights;
- and
- a color filter layer disposed over the first, second and third LED dies, and configured to filter out lights emitted from the first and second LED dies and to pass lights emitted from the third LED die.
3 more elements
Dependencies are inferred from the claim text.