Semiconductor component

Patent metadata

Field	Value
Publication number	US-10243115-B2
Application number	US-201615776686-A
Country	US
Kind code	B2
Filing date	Nov 17, 2016
Priority date	Nov 17, 2015
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A semiconductor component has a semiconductor chip that generates an electromagnetic primary radiation having a first peak wavelength, having a first conversion element, which has a quantum structure, wherein the quantum structure is formed to partially shift the primary radiation to a secondary radiation having a second peak wavelength, wherein a second conversion element is provided which has a luminescent material, wherein the luminescent material is formed to shift an electromagnetic radiation to a tertiary radiation having a dominant wavelength, wherein the first conversion element is formed to generate secondary radiation, which has a lower peak wavelength than the dominant wavelength of the tertiary radiation.

First claim

The invention claimed is:

1. A semiconductor component comprising:
a semiconductor chip that generates an electromagnetic primary radiation, which is blue light, having a first peak wavelength,
having a first conversion element having a quantum structure and the quantum structure comprises a plurality of quantum layers, between which barrier layers are arranged so that the quantum layers and the barrier layers form a multiple quantum well structure, wherein the quantum structure is formed to partially shift the primary radiation to a secondary radiation having a second peak wavelength and the secondary radiation is green light, and
a second conversion element having a luminescent material, wherein the luminescent material has an Eu 2+ -doped nitride or a Mn 4+ -doped fluoride and is formed to shift an electromagnetic radiation to a tertiary radiation having a dominant wavelength, wherein the first conversion element is formed to generate the secondary radiation having a lower peak wavelength than the dominant wavelength of the tertiary radiation and the tertiary radiation is red light.

2. The semiconductor component according to claim 1 , wherein the luminescent material is formed to generate tertiary radiation having a dominant wavelength between 590 nm and 640 nm, and the second conversion element is located between the semiconductor chip and the first conversion element.

3. The semiconductor component according to claim 2 , wherein the luminescent material is formed to generate tertiary radiation having a dominant wavelength between 595 nm and 610 nm.

4. The semiconductor component according to claim 2 , wherein the luminescent material is formed to generate tertiary radiation having a dominant wavelength between 617 nm and 624 nm.

5. The semiconductor component according to claim 1 , wherein the luminescent material is (K,Na) 2 (Si,Ti)F 6 :Mn 4+ .

6. The semiconductor component according to claim 1 , wherein the luminescent material is selected from the group consisting of (Ca,Sr)AlSiN 3 :Eu 2+ , Sr(Ca,Sr)Si 2 Al 2 N 6 :Eu 2+ , (Sr,Ca)AlSiN 3 *Si 2 N 2 O:Eu 2+ , (Ca,Ba,Sr) 2 Si 5 N 8 :Eu 2+ and (Sr,Ca)[LiAl 3 N 4 ]:Eu 2+ .

7. The semiconductor component according to claim 1 , wherein the semiconductor chip is formed to generate primary radiation having a peak wavelength between 380 nm and 480 nm.

8. The semiconductor component according to claim 1 , wherein the first conversion element is formed to generate secondary radiation having a peak wavelength between 520 nm and 545 nm.

9. The semiconductor component according to claim 1 , wherein the first conversion element is arranged on the semiconductor chip, the second conversion element is arranged on the first conversion element, the first conversion element has a transparent carrier, the quantum structure is arranged on an underside of the carrier, the underside faces the semiconductor chip, and the carrier consists of sapphire.

10. The semiconductor component according to claim 9 , wherein the carrier has a Bragg mirror layer on an upper side facing the second conversion element.

11. The semiconductor component according to claim 1 , wherein the second conversion element is arranged on the semiconductor chip, the first conversion element is arranged on the second conversion element, the first conversion element comprises a transparent carrier, the quantum structure is arranged on an underside of the carrier, the underside faces the second conversion element, and the carrier is made of sapphire.

12. The semiconductor component according to claim 1 , wherein the carrier has a second quantum structure on an upper side.

13. The semiconductor component according to claim 1 , wherein at least one upper side of the semiconductor component is covered with a transparent cover layer made of silicone.

14. The semiconductor component according to claim 1 , wherein at least a part of the side surfaces of the semiconductor component is covered with a reflective protective layer.

Assignees

• Osram Opto Semiconductors Gmbh

Inventors

• Pust Philipp
• Racz David
• Kölper Christopher

Classifications

• H10W90/00

  Package configurations · CPC title

• H01L33/60

  Electricity · mapped topic

• H01L33/502

  Electricity · mapped topic

• H01L33/56

  Electricity · mapped topic

• H01L33/54

  Electricity · mapped topic