IP Library Granted Patent US 10,833,231
Granted Patent B2
US 10,833,231 · App. 16/094,870 · Granted Nov 10, 2020

Method for producing an optoelectronic component, and optoelectronic component

Inventors: Gertrud Kräuter (Regensburg, DE); Matthias Loster (Regensburg, DE); Kathy Schmidtke (Mainburg, DE); Alan Piquette (Kensington, NH)
Assignee: OSRAM OLED GMBH
H01L33/56C08G77/18C08J3/24C08K3/22C08K3/28C09D183/06C09K11/02C09K11/08C08K2003/2227H01L33/501H01L33/507H01L2933/005H01L2933/0041
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Quick Facts
Patent No.
US 10,833,231
App. No.
16/094,870
Granted
Nov 10, 2020
Kind
B2
Abstract

An optoelectronic component and a method for producing an optoelectronic component are disclosed. In an embodiment a method for producing an optoelectronic component includes providing a semiconductor capable of emitting primary radiation, providing an alkoxy-functionalized polyorganosiloxane resin and crosslinking the alkoxy-functionalized polyorganosiloxane resin to form a three-dimensionally crosslinked polyorganosiloxane, wherein an organic portion of the three-dimensionally crosslinked polyorganosiloxane is up to 25 wt %.

Claims (29)

1. A method for producing an optoelectronic component, the method comprising:

providing a semiconductor capable of emitting primary radiation;

providing an alkoxy-functionalized polyorganosiloxane resin; and

crosslinking the alkoxy-functionalized polyorganosiloxane resin to form a three-dimensionally crosslinked polyorganosiloxane,

wherein an organic portion of the three-dimensionally crosslinked polyorganosiloxane is up to 25 wt %.

2. The method according to claim 1 , wherein crosslinking comprises condensation crosslinking.

3. The method according to claim 1 , wherein the organic portion of the three-dimensionally crosslinked polyorganosiloxane is between 13 wt % and 18 wt % inclusive.

4. The method according to claim 1 , wherein the crosslinked polyorganosiloxane has a Shore A hardness greater than 70.

5. The method according to claim 1 , wherein the alkoxy-functionalized polyorganosiloxane resin is an alkoxy-functionalized methylphenyl silicone resin having an alkoxy content of 17+/−4 wt %.

6. The method according to claim 1 , wherein the alkoxy-functionalized polyorganosiloxane resin is an alkoxy-functionalized methyl silicone resin having an alkoxy content of 35+/−4 wt %.

7. The method according to claim 1 , wherein the crosslinked polyorganosiloxane is arranged in a beam path of the semiconductor.

8. The method according to claim 1 , further comprising applying the alkoxy-functionalized polyorganosiloxane resin as a converter element on a radiation main surface of the semiconductor, wherein the converter element comprises at least one phosphor which converts the primary radiation into a secondary radiation.

9. The method according to claim 8 , wherein the phosphor is an aluminum garnet, alkaline earth nitride or a combination thereof, and wherein the phosphor comprises a content of at least 50 wt % in the crosslinked polyorganosiloxane.

10. The method according to claim 1 , further comprising arranging the crosslinked polyorganosiloxane as a volume casting at least in regions within a recess of a housing of the optoelectronic component, the semiconductor being positively surrounded by the crosslinked polyorganosiloxane and having a cross-sectional thickness of at least 250 μm, wherein a phosphor is an aluminum garnet, alkaline earth nitride or a combination thereof, and wherein the phosphor comprises a content of at most 25 wt % in the crosslinked polyorganosiloxane.

11. The method according to claim 1 , wherein the crosslinked polyorganosiloxane is formed as a housing or lens.

12. The method according to claim 1 , wherein providing the alkoxy-functionalized polyorganosiloxane resin comprises casting, drop casting, spin coating, doctor blading, spray coating or compression molding.

13. The method according to claim 1 , wherein crosslinking the alkoxy-functionalized polyorganosiloxane resin comprises applying temperature and/or humidity or UV radiation.

14. The method according to claim 1 , wherein the alkoxy-functionalized polyorganosiloxane resin is produced by hydrolysis of a precursor.

15. An optoelectronic device formed by the method according to claim 1 .

16. The method according claim 1 , wherein the three-dimensionally crosslinked polyorganosiloxane is a close meshed three-dimensionally crosslinked polyorganosiloxane.

17. The method according to claim 16 , wherein the three-dimensionally crosslinked polyorganosiloxane forms a close-meshed three-dimensional Si—O network.

18. The method according to claim 1 , wherein the crosslinked polyorganosiloxane has the following structural formula:

wherein R is a methyl-radical and/or a phenyl-radical.

19. A method for producing an optoelectronic component, the method comprising:

providing a semiconductor capable of emitting primary radiation;

providing an alkoxy-functionalized polyorganosiloxane resin; and

crosslinking the alkoxy-functionalized polyorganosiloxane resin to form a three-dimensionally crosslinked polyorganosiloxane,

wherein an organic portion of the three-dimensionally crosslinked polyorganosiloxane is up to 25 wt %, and

wherein the three-dimensionally crosslinked polyorganosiloxane forms a close meshed three-dimensional Si—O network.

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 Dec 14, 2018
From: KRÄUTER, GERTRUD; LOSTER, MATTHIAS; SCHMIDTKE, KATHY; PIQUETTE, ALAN
To: OSRAM OPTO SEMICONDUCTORS GMBH
Reel/Frame 047914/0444 →