# US 11,994,768 B2 · Lighting apparatus

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- Number: US 11,994,768 B2
- Document ID: US11994768B2
- Status: Granted
- Kind: B2
- Application number: 18/366,040
- Filed: 2023-08-07
- Published: 2023-11-23
- Granted: 2024-05-28
- Earliest claimed: 2011-04-04
- Assignees: LG Innotek Co., Ltd.
- Applicants: LG Innotek Co., Ltd.
- Inventors: Kwang Ho Park; Chul Hong Kim; Moo Ryong Park; Byoung Eon Lee
- Web page: https://patentgrep.com/patent/US11994768B2

## CPC

- G02F 1/133603: {with LEDs}
- F21K 9/61: using light guides
- G02F 1/133605: {including specially adapted reflectors}
- G02F 1/133611: {including means for improving the brightness uniformity}
- B32B 27/36: comprising polyesters
- B32B 2307/416: Reflective
- B32B 2457/202: LCD, i.e. liquid crystal displays
- F21Y 2115/10: Light-emitting diodes [LED]
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

The present invention relates to a lighting apparatus using LEDs as light sources and a display using the lighting apparatus, particularly, the present invention provides a lighting apparatus including: a plurality of light sources located on a printed circuit board; and a reflecting unit provided on the printed circuit board; and a spaced area provided inside the reflective unit.

## Claims

### Claim 1

A lighting apparatus comprising:
a substrate;
a light source disposed on the substrate and including a plurality of light emitting elements;
a reflective unit disposed on the substrate;
a resin layer disposed on the reflection unit and covering the light source; and
an optical pattern layer disposed on the resin layer,
wherein the reflective unit includes a first film, a second film spaced apart from the first film, a spacer disposed between the first film and the second film, and a plurality of first spaced areas formed within the spacer,
wherein the first film and the second film include a plurality of holes through which each of the plurality of light emitting elements passes,
wherein the optical pattern layer includes a first transparent film disposed on the resin layer, a second transparent film disposed spaced apart from the first transparent film, and a plurality of light blocking patterns disposed between the first transparent film and the second transparent film, and
wherein a number of the plurality of first spaced areas is greater than a number of the plurality of light blocking patterns.

### Claim 2 (depends on 1)

The lighting apparatus of claim 1, wherein the optical pattern layer includes a plurality of second spaced areas disposed around the plurality of light blocking patterns.

### Claim 3 (depends on 1)

The lighting apparatus of claim 1, wherein a number of the plurality of light blocking patterns is the same as a number of the plurality of light emitting elements.

### Claim 4 (depends on 1)

The lighting apparatus of claim 1, wherein a number of the plurality of second spaced areas is the same as a number of light emitting devices.

### Claim 5 (depends on 4)

The lighting apparatus of claim 4, wherein the plurality of second spaced areas are disposed to surround a periphery of the light blocking pattern.

### Claim 6 (depends on 4)

The lighting apparatus of claim 4, wherein the plurality of second spaced areas are regularly arranged.