Radiation-emitting component, transparent material and filler particles, and method of producing same

Patent metadata

Field	Value
Publication number	US-9748451-B2
Application number	US-201314391769-A
Country	US
Kind code	B2
Filing date	Apr 5, 2013
Priority date	Apr 12, 2012
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A radiation-emitting component includes a radiation source; a transparent material disposed in the beam path of the component and including a polymer material and filler particles, wherein the filler particles include an inorganic filler material and a phosphonic acid derivative or phosphoric acid derivative attached to a surface thereof and through which the filler particles are crosslinked with the polymer material.

First claim

The invention claimed is:

1. A radiation-emitting component comprising:
a radiation source;
a transparent material disposed in the beam path of the component and comprises a polymer material and filler particles;
wherein the filler particles comprise an inorganic filler material and a phosphonic acid derivative or phosphoric acid derivative attached to a surface thereof having a structure represented by Formulae Ia and/or Ib;

and through which the filler particles are crosslinked with the polymer material,
wherein the transparent material is obtained by crosslinking the filler particles with the polymer material, and reacting the polymer material with a phosphonic acid derivative or a phosphoric acid derivative
where
n=0 or 1,
X is a spacer group,
R=H, alkyl, aryl, arylalkyl or silyl, and
FG is a crosslinkable group or a leaving group,
wherein, in Formulae Ia and Ib, X in the P—[X] n — fragment is at least one selected from the group consisting of alkylene, arylalkylene, alkylarylene, arylene, alkylene-O-alkylene, O-alkylene, O-arylalkylene, O-alkylarylene, O-arylene and O-alkylene-O-alkylene,
wherein, in Formulae Ia and Ib, FG in the P—[X] n -FG fragment is at least one selected from the group consisting of vinyl, epoxyethyl, glycidyl, O-vinyl, O-allyl, O-alkenyl, O-epoxyalkyl, O-glycidyl, O-alkyl, O-aryl, S-alkyl, S-aryl and halogen.

2. The component according to claim 1 ,
wherein, in Formulae Ia and Ib, [X] n -FG in the P—[X] n -FG fragment is at least one selected from the group consisting of vinyl, allyl, epoxyethyl, glycidyl, O-vinyl, O-glycidyl,

3. The component according to claim 1 , wherein the polymer material comprises a silicone, an epoxy resin, a silicone-epoxide hybrid material or a combination thereof.

4. The component according to claim 3 , wherein the transparent material is obtained by crosslinking the filler particles with the polymer material, and reacting a functional group Y of the polymer material selected from the group consisting of Si—H, Si—OH and alkylene-OH with a crosslinkable group or a leaving group FG of the phosphonic acid derivative or phosphoric acid derivative, the phosphonic acid derivative or phosphoric acid derivative having a structure which is represented by Formulae Ia and/or Ib.

5. The component according to claim 1 , wherein the inorganic filler material comprises a diffuser, a heat-conducting metal oxide, a converter material or a combination thereof.

6. A process of producing a transparent material for a radiation-emitting component, comprising:
A) providing a polymer material;
B) providing filler particles comprising an inorganic filler material and a phosphonic acid derivative or phosphoric acid derivative attached to a surface thereof;
C) producing a mixture comprising the polymer material and the filler particles;
D) curing the mixture by crosslinking the polymer material with the filler particles via the attached phosphonic acid derivative or phosphoric acid derivative to obtain the transparent material having a structure represented by Formulae Ia and/or Ib

where
n=0 or 1,
X is a spacer group,
R=H, alkyl, aryl, arylalkyl or silyl, and
FG is a crosslinkable group or a leaving group,
wherein, in Formulae Ia and Ib, X in the fragment is at least one selected from the group consisting of alkylene, arylalkylene, alkylarylene, arylene, alkylene-O-alkylene, O-alkylene, O-arylalkylene, O-alkylarylene, O-arylene and O-alkylene-O-alkylene,
wherein, in Formulae Ia and Ib, FG in the P—[X] n -FG fragment is at least one selected from the group consisting of vinyl, epoxyethyl, glycidyl, O-vinyl, O-allyl, O-alkenyl, O-epoxyalkyl, O-glycidyl, O-alkyl, O-aryl, S-alkyl, S-aryl and halogen; and

E) disposing the transparent material in a beam path of the radiation-emitting component.

7. The process according to claim 6 , wherein providing the filler particles in step B) comprises:
B1) providing the inorganic filler material;
B2) applying a composition to the inorganic filler material, said composition comprising a solvent and a phosphonic acid derivative or a phosphoric acid derivative, said phosphonic acid derivative or phosphoric acid derivative having a structure represented by the Formula III

where
n=0 or 1,
X is a spacer group,
FG is a crosslinkable group or a leaving group, and
Z=O—R or halogen, where R is independently selected from H, alkyl, aryl, arylalkyl, silyl and a cation;
B3) removing the solvent, forming filler particles having a phosphonic acid derivative or phosphoric acid derivative attached to a surface thereof and has a structure which is represented by Formulae Ia and/or Ib.

8. The process according to claim 6 , wherein providing the filler particles in step B) comprises:
B1) providing the inorganic filler material;
B2) applying a composition to the inorganic filler material, said composition comprising a solvent and a phosphonic acid derivative or a phosphoric acid derivative, said phosphonic acid derivative or phosphoric acid derivative having a structure represented by the Formula III

where
n=0 or 1,
X is a spacer group,
FG is a crosslinkable group or a leaving group, and
Z=O—R or halogen, where R is independently selected from H, alkyl, aryl, arylalkyl, silyl and a cation;
B3′) supplying energy, forming filler particles having a phosphonic acid derivative or phosphoric acid derivative attached to the surface thereof and has a structure represented by Formulae Ia and/or Ib.

9. The process according to claim 6 , further comprising:
A0) providing a radiation source, and
B0) producing a transparent material in a beam path of the component.

10. The process according to claim 9 , wherein the transparent material comprises a polymer material and filler particles,
wherein the filler particles comprise an inorganic filler material and a phosphonic acid derivative or phosphoric acid derivative attached to a surface thereof and through which the filler particles are crosslinked with the polymer material.

Assignees

• Osram Opto Semiconductors Gmbh

Inventors

• Schmidtke Kathy
• Kruppa Michael
• Braune Bert

Classifications

• H10W90/754

  between a chip and a stacked insulating package substrate, interposer or RDL · CPC title

• H01L2933/0041

  Electricity · mapped topic

• H01L2933/0091

  Electricity · mapped topic

• H01L2224/48227

  Electricity · mapped topic

• C09C1/3676

  Treatment with macro-molecular organic compounds · CPC title