# US 2014/0197432 A1 · Multicolor light emitting diodes

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- Number: US 2014/0197432 A1
- Document ID: US20140197432A1
- Status: Published application
- Kind: A1
- Application number: 14/209,883
- Filed: 2014-03-13
- Published: 2014-07-17
- Earliest claimed: 2009-06-30
- Assignees: Apple Inc.
- Applicants: Apple Inc.
- Inventors: Aleksandar Pance; Duncan Kerr; Brett Bilbrey; Michael F. Culbert
- Web page: https://patentgrep.com/patent/US20140197432A1

## CPC

- H10H 20/813: having a plurality of light-emitting regions, e.g. multi-junction LEDs or light-emitting devices having photoluminescent regions within the bodies
- G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources}
- H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls
- H10W 90/00: Package configurations
- H10H 20/855: Optical field-shaping means, e.g. lenses
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A device such as a multicolor light emitting diode that emits different colors of light and that may combine the different colors emitted by individual light emitting diodes. The multicolor LED may include a common anode terminal that may be connected to each anode of the individual light emitting diodes. The multicolor LED may be a five terminal multicolor LED. Additionally, the multicolor LED may include two anode terminals, in which the first anode terminal may be a common anode terminal connected to three of the individual color LEDs and the second anode terminal may be connected to an anode of a white LED. In this embodiment, the multicolor LED may be a six terminal multicolor LED.

## Claims

### Claim 1

A light emitting package; comprising:
a rectangular light guide with one or more angled corners, wherein each angled corner extends approximately 135 degrees from adjacent sidewalls of the light guide; and
a light emitting diode (LED) positioned adjacent to one of the angled corners, wherein because the angled corner extends approximately 135 degrees from adjacent sidewalls of the light guide, light emitted from the LED is more evenly dispersed within the light guide than if the LED were positioned adjacent to a sidewall

### Claim 2 (depends on 1)

The light emitting package of claim 1, further comprising a first set of one or more LEDs, wherein each LED in the first set of LEDs:
is positioned adjacent to one of the angled corners; and
emits a white light or a colored light.

### Claim 3 (depends on 2)

The light emitting package of claim 2, further comprising second set of one or more LEDs, wherein each LED in the second set of LEDs
is positioned adjacent to a sidewall of the light guide; and
emits a white light or a colored light.

### Claim 4

A light emitting package comprising:
a multicolor LED operative to emit a colored light; and
a first rectangular light guide optically coupled to the multicolor LED, wherein the first rectangular light guide comprises a first rectangular prism portion and a first ramp-shaped portion that is adjacent and contiguous with the first rectangular prism portion, and wherein the first ramp-shaped portion is configured to direct light exiting the multicolor LED either upward or downward into the first rectangular prism portion.

### Claim 5 (depends on 4)

The light emitting package of claim 4, further comprising:
a white LED operative to emit a white light; and
a second rectangular light guide optically coupled to the white LED, wherein:
the second rectangular light guide is adjacent the first rectangular light guide; and
the second rectangular light guide comprises a second rectangular prism portion and a second ramp-shaped portion that is adjacent and contiguous with the second rectangular prism portion, wherein the second ramp-shaped portion is configured to direct light exiting the white LED either upward or downward into the second rectangular prism portion.