IP Library Granted Patent US 11,437,550
Granted Patent B2
US 11,437,550 · App. 16/968,901 · Granted Sep 6, 2022

Optoelectronic component and method of producing an optoelectronic component

Inventors: Isabel Otto (Regenstauf, DE); Holger Klassen (Regenstauf, DE); Berthold Hahn (Hemau, DE)
Assignee: OSRAM OLED GmbH
H01L33/504H01L33/005H01L2933/0033
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Quick Facts
Patent No.
US 11,437,550
App. No.
16/968,901
Granted
Sep 6, 2022
Kind
B2
Abstract

An optoelectronic component that emits electromagnetic radiation from a radiation exit surface of the optoelectronic component includes a radiation-emitting semiconductor chip that produces electromagnetic radiation, and a marker element applied to the radiation exit surface of the optoelectronic component, the marker element including a dye substance that can be removed from the radiation exit surface using a solvent and/or is permeable to the electromagnetic radiation of the optoelectronic component, wherein the dye substance includes a resin into which fluorescent particles are introduced that convert electromagnetic radiation of a first wavelength range into electromagnetic radiation of a second wavelength range, the first wavelength range and the second wavelength range being within the ultraviolet spectral range.

Claims (14)

1. An optoelectronic component that emits electromagnetic radiation from a radiation exit surface of the optoelectronic component comprising:

a radiation-emitting semiconductor chip that produces electromagnetic radiation, and

a marker element applied to the radiation exit surface of the optoelectronic component, the marker element comprising a dye substance that can be removed from the radiation exit surface using a solvent and/or is permeable to the electromagnetic radiation of the optoelectronic component, wherein

the dye substance comprises a resin into which fluorescent particles are introduced that convert electromagnetic radiation of a first wavelength range into electromagnetic radiation of a second wavelength range, the first wavelength range and the second wavelength range being within an ultraviolet spectral range.

2. The optoelectronic component as claimed in claim 1 , wherein the marker element marks a position of at least one electrical contact of the optoelectronic component.

3. The optoelectronic component as claimed in claim 1 , wherein the dye substance is absorbent in the ultraviolet spectral range.

4. The optoelectronic component as claimed in claim 1 , wherein the radiation exit surface of the optoelectronic component is no more than 14% smaller than a cross-sectional area of the optoelectronic component.

5. The optoelectronic component as claimed in claim 1 , wherein the marker element has a dimension of at least 140 microns.

6. A method of producing an optoelectronic component comprising applying a dye substance to a radiation exit surface of the optoelectronic component to produce a marker element,

wherein the dye substance can be removed from the radiation exit surface with a solvent and/or is permeable to the electromagnetic radiation of the optoelectronic component, and

the dye substance comprises a resin into which fluorescent particles are introduced that convert electromagnetic radiation of a first wavelength range into electromagnetic radiation of a second wavelength range, the first wavelength range and the second wavelength range being within an ultraviolet spectral range.

7. The method as claimed in claim 6 , wherein the dye substance is applied from a cartridge by applying pressure by jetting through a jet valve.

8. The method as claimed in claim 6 , wherein the dye substance is applied from a cartridge by applying pressure by dispensing through a needle.

9. The method as claimed in claim 6 , wherein the dye substance is applied by inking from an open-pored membrane or a capillary on contact with the radiation exit surface.

Assignments (2)
MERGER Recorded Feb 17, 2026
From: OSRAM OLED GMBH
To: AMS-OSRAM INTERNATIONAL GMBH
Reel/Frame 074881/0104 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 29, 2020
From: OTTO, ISABEL; KLASSEN, HOLGER; HAHN, BERTHOLD
To: OSRAM OLED GMBH
Reel/Frame 054211/0122 →