IP Library Granted Patent US 9,935,244
Granted Patent B2
US 9,935,244 · App. 15/203,025 · Granted Apr 3, 2018

Light emitting device including a filter and a protective layer

Inventors: April Dawn Schricker (Palo Alto, CA); Hans-Helmut Bechtel (Roetgen, DE); Kim Kevin Mai (San Jose, CA); Thomas Diederich (Stolberg, DE); Joost Peter Andre Vogels (Leende, NL); Uwe Mackens (Aachen, DE); Matthias Heidemann (Alsdorf, DE)
Assignee: Koninklijke Philips N.V.
H01L33/44H01L25/0753H01L25/50H01L33/005H01L33/50H01L33/52H01L33/56H01L33/58H01L33/60H01L33/62H01L33/46H01L33/501H01L33/502H01L33/505H01L2224/16225H01L2924/0002H01L2933/0025H01L2933/0033H01L2933/0041H01L2933/0058
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Quick Facts
Patent No.
US 9,935,244
App. No.
15/203,025
Granted
Apr 3, 2018
Kind
B2
Abstract

A method according to embodiments of the invention includes providing a plurality of LEDs attached to a mount. A filter is attached to at least one of the plurality of LEDs. A protective layer is formed over the filter. A reflective layer is formed over the mount. A portion of the reflective layer disposed over the protective layer is removed.

Claims (15)

1. A structure, comprising:

a plurality of LEDs attached to a mount;

a plurality of wavelength converting layers disposed over the LEDs;

a plurality of transparent layers disposed over the wavelength converting layers;

a reflective material disposed in areas between neighboring LEDs; and

a top surface of the structure comprising the transparent layers over the LEDs and the reflective material over the areas between the neighboring LEDs, the top surface of the structure being substantially planar.

2. The structure of claim 1 , wherein top surfaces of the transparent layers are roughened, textured, or patterned.

3. The structure of claim 1 , wherein the reflective material is in direct contact with side surfaces of the neighboring LEDs.

4. The structure of claim 1 , wherein each wavelength converting layer and each transparent layer have a substantially same width as a top surface of each LED.

5. The structure of claim 4 , wherein the reflective material is in direct contact with sidewalls of neighboring transparent layers disposed over the neighboring LEDs.

6. The structure of claim 4 , wherein the reflective material is in direct contact with sidewall of neighboring transparent layers disposed over the neighboring LEDs.

7. The structure of claim 4 , wherein top surfaces of the transparent layers are roughened, textured, or patterned.

8. The structure of claim 4 , wherein the reflective material is in direct contact with side surfaces of the neighboring LEDs.

9. The structure of claim 4 , wherein the reflective material is in direct contact with the mount.

10. The structure of claim 1 , wherein the reflective material is in direct contact with portions of the wavelength converting layers and the mount.

Assignments (6)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2025
From: LUMILEDS LLC
To: LUMILEDS SINGAPORE PTE. LTD.
Reel/Frame 071888/0086 →
RELEASE OF SECURITY INTEREST Recorded Jan 29, 2025
From: SOUND POINT AGENCY LLC
To: LUMILEDS LLC; LUMILEDS HOLDING B.V.
Reel/Frame 070046/0001 →
SECURITY INTEREST Recorded Jan 5, 2023
From: LUMILEDS LLC; LUMILEDS HOLDING B.V.
To: SOUND POINT AGENCY LLC
Reel/Frame 062299/0338 →
PATENT SECURITY AGREEMENT Recorded Dec 9, 2022
From: LUMILEDS, LLC
To: DEUTSCHE BANK AG NEW YORK BRANCH
Reel/Frame 062114/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 9, 2018
From: KONINKLIJKE PHILIPS N.V.
To: LUMILEDS LLC
Reel/Frame 045859/0005 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 6, 2016
From: SCHRICKER, APRIL DAWN; BECHTEL, HANS-HELMUT; MAI, KIM KEVIN; DIEDERICH, THOMAS; VOGELS, JOOST PETER ANDRE; MACKENS, UWE; HEIDEMANN, MATTHIAS
To: KONINKLIJKE PHILIPS N.V.
Reel/Frame 039087/0143 →
Continuity (3)
Continuation 14440479
Provisional Application 61723342 · Nov 7, 2012
Related Publication 20160315070A1 · Oct 27, 2016