# US 9,041,034 B2 · Light emitting diode component comprising polysilazane bonding layer

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- Number: US 9,041,034 B2
- Document ID: US9041034B2
- Status: Granted
- Kind: B2
- Application number: 13/876,373
- Filed: 2011-10-25
- Published: 2013-08-29
- Granted: 2015-05-26
- Earliest claimed: 2010-11-18
- Assignees: 3M Innovative Properties Company
- Applicants: Guoping Mao; Stephen J. Znameroski; Yu Yang; Terry L. Smith
- Inventors: Guoping Mao; Stephen J. Znameroski; Yu Yang; Terry L. Smith
- Web page: https://patentgrep.com/patent/US9041034B2

## CPC

- H10H 20/8512: {Wavelength conversion materials}
- H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings
- H10H 20/018: {Bonding of wafers}
- H10H 20/034: {of coatings}
- H10H 20/0361: {of wavelength conversion means}
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS

## Abstract

In one embodiment, a semiconductor component, such as a wavelength converter wafer, is described wherein the wavelength converter is bonded to an adjacent inorganic component with a cured bonding layer comprising polysilazane polymer. The wavelength converter may be a multilayer semiconductor wavelength converter or an inorganic matrix comprising embedded phosphor particles. In another embodiment, the semiconductor component is a pump LED component bonded to an adjacent component with a cured bonding layer comprising polysilazane polymer. The adjacent component may the described wavelength converter(s) or another component comprised of inorganic material(s) such as a lens or a prism. Also described are methods of making semiconductor components such as wavelength converters and LED's.

## Claims

### Claim 1

A semiconductor component comprising a wavelength converter bonded to an adjacent inorganic component with a cured bonding layer comprising a polysilazane polymer.

### Claim 2 (depends on 1)

The semiconductor component of claim 1 wherein the wavelength converter is a multilayer semiconductor wavelength converter or an inorganic matrix comprising embedded phosphor particles.

### Claim 3 (depends on 1)

The semiconductor component of claim 1 wherein the wavelength converter is a multilayer semiconductor wavelength converter comprising II-VI semiconductor material.

### Claim 4 (depends on 1)

The semiconductor component of claim 1 wherein the multilayer semiconductor wavelength converter absorbs a portion of blue light to produce longer wavelengths.

### Claim 5 (depends on 1)

The semiconductor component of claim 1 wherein the bonding layer further comprises up to 10 wt-% of free-radically polymerizable monomer.

### Claim 6 (depends on 5)

The semiconductor component of claim 5 wherein the free-radically polymerizable monomer is a (meth)acrylate monomer.

### Claim 7 (depends on 6)

The semiconductor component of claim 6 wherein the (meth)acrylate monomer is a multi-(meth)acrylate monomer comprising at least three (meth)acrylate groups.

### Claim 8 (depends on 1)

The semiconductor component of claim 1 wherein the adjacent component is a cover sheet.

### Claim 9

A light emitting diode (LED), comprising:
a pump LED component bonded to an adjacent component with a cured bonding layer comprising polysilazane polymer.

### Claim 10 (depends on 9)

The light emitting diode (LED) of claim 9 wherein the LED component and adjacent component are comprised of a material which is stable at temperature greater than 150° C.

### Claim 11 (depends on 9)

The light emitting diode (LED) of claim 9 wherein the LED component and adjacent component are comprised of one or more inorganic materials.

### Claim 12 (depends on 9)

The light emitting diode (LED) of claim 9 wherein the pump LED comprises III-V semiconductor material.

### Claim 13 (depends on 9)

The light emitting diode (LED) of claim 9 wherein the adjacent component is a wavelength converter, lens, or prism.

### Claim 14 (depends on 13)

The light emitting diode (LED) of claim 13 wherein the wavelength converter is a multilayer semiconductor wavelength converter or an inorganic matrix comprising embedded phosphor particles.

### Claim 15 (depends on 9)

The light emitting diode (LED) of claim 9 wherein the light emitting diode (LED) further comprise a cover sheet.

### Claim 16 (depends on 13)

The light-emitting diode (LED) of claim 13 where the wavelength converter is bonded to the cover sheet with a cured bonding layer comprising a polysilazane polymer.

### Claim 17

An electronic illuminated display comprising:
a light-transmissive inorganic component bonded to an adjacent inorganic component with a cured bonding layer comprising a polysilazane polymer.

### Claim 18 (depends on 9, 17)

The electronic illuminated display of claim 17 wherein the light-transmissive inorganic component is the light emitting diode (LED) of claim 9.

### Claim 19

A method of making a semiconductor component comprising:
bonding a wavelength converter wafer, pump LED component, or combination thereof to an adjacent component with a bonding layer comprising polysilazane polymer.

### Claim 20 (depends on 19)

The method of claim 19 wherein a wavelength converter is bonded to an inorganic light-transmissive cover sheet.

### Claim 21 (depends on 1)

The semiconductor component of claim 1 wherein the polysilazane comprises a linear, branched, or cyclic backbone comprising at least one Si—N linkage and at least one ethylenically unsaturated group or a SiH group.

### Claim 22 (depends on 9)

The light emitting diode (LED) of claim 9 wherein the polysilazane comprises a linear, branched, or cyclic backbone comprising at least one Si—N linkage and at least one ethylenically unsaturated group or a SiH group.

### Claim 23 (depends on 17)

The electronic illuminated display of claim 17 wherein the polysilazane comprises a linear, branched, or cyclic backbone comprising at least one Si—N linkage and at least one ethylenically unsaturated group or a SiH group.

### Claim 24 (depends on 19)

The method of making a semiconductor component of claim 19 wherein the polysilazane comprises a linear, branched, or cyclic backbone comprising at least one Si—N linkage and at least one ethylenically unsaturated group or a SiH group.
