IP Library Granted Patent US 11,069,844
Granted Patent B2
US 11,069,844 · App. 16/382,008 · Granted Jul 20, 2021

Light emitting device and method for manufacturing light emitting device

Inventors: Luca Haiberger (Regensburg, DE); Sam Chou (Regensburg, DE); Martin Brandl (Kelheim, DE)
Assignee: OSRAM OLED GMBH
H01L33/60H01L33/44H01L33/483H01L33/50H01L2933/0025H01L2933/0058
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Quick Facts
Patent No.
US 11,069,844
App. No.
16/382,008
Granted
Jul 20, 2021
Kind
B2
Abstract

A light-emitting device and a method for manufacturing a light emitting device are disclosed. In an embodiment a light-emitting device includes a light-emitting semiconductor chip having a light-outcoupling surface and an optical element arranged on the light-outcoupling surface, wherein the light-emitting semiconductor chip is laterally surrounded by a frame element in a form-locking manner, wherein the optical element is mounted on the frame element, wherein the frame element projects beyond the light-outcoupling surface in a vertical direction such that a gas-filled gap is present at least in a partial region between the light-outcoupling surface and the optical element, and wherein the frame element has a channel connecting the gap to an atmosphere surrounding the light-emitting device.

Claims (21)

1. A light-emitting device comprising:

a light-emitting semiconductor chip having a light-outcoupling surface; and

an optical element arranged on the light-outcoupling surface,

wherein the light-emitting semiconductor chip is laterally surrounded by a frame element in a form-locking manner,

wherein the optical element is mounted on the frame element,

wherein the frame element projects beyond the light-outcoupling surface in a vertical direction such that a gas-filled gap is present at least in a partial region between the light-outcoupling surface and the optical element, and

wherein the frame element has a channel connecting the gap to an atmosphere surrounding the light-emitting device.

2. The light-emitting device according to claim 1 , further comprising a wavelength conversion element arranged on the light-outcoupling surface.

3. The light-emitting device according to claim 2 , wherein the light-emitting semiconductor chip and the wavelength conversion element together are laterally surrounded by the frame element in a form-locking manner.

4. The light-emitting device according to claim 2 , wherein the frame element projects beyond the wavelength conversion element in the vertical direction such that the gas-filled gap between the wavelength conversion element and the optical element is present at least in a partial region.

5. The light-emitting device according to claim 1 , wherein the frame element comprises a reflective material.

6. The light-emitting device according to claim 1 , wherein the frame element comprises a matrix material with particles in the matrix material.

7. The light-emitting device according to claim 1 , wherein the optical element is fixed to the frame element by an adhesive.

8. The light-emitting device according to claim 1 , wherein the optical element has a recess enclosed by an edge in a bottom side.

9. The light-emitting device according to claim 8 , wherein the optical element rests with the edge on the frame element.

10. The light-emitting device according to claim 8 , wherein the optical element is fixed to the frame element by an adhesive between the edge and the frame element.

11. The light-emitting device according to claim 1 , wherein the optical element is a lens element.

12. The light-emitting device according to claim 1 , wherein the gap is air-filled.

13. The light-emitting device according to claim 1 , wherein the light-emitting semiconductor chip is a flip-chip configured to be electrically contacted on a rear side opposite the light-outcoupling surface.

14. The light-emitting device according to claim 13 , wherein the frame element partly covers the rear side.

15. The light-emitting device according to claim 1 , wherein the frame element completely covers all side surfaces of the light-emitting semiconductor chip.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 3, 2020
From: OSRAM OPTO SEMICONDUCTORS GMBH
To: OSRAM OLED GMBH
Reel/Frame 051464/0504 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 27, 2019
From: HAIBERGER, LUCA; CHOU, SAM; BRANDL, MARTIN
To: OSRAM OPTO SEMICONDUCTORS GMBH
Reel/Frame 049609/0741 →