# US 12,009,462 B2 · Light source assembly

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- Number: US 12,009,462 B2
- Document ID: US12009462B2
- Status: Granted
- Kind: B2
- Application number: 17/673,110
- Filed: 2022-02-16
- Published: 2022-06-02
- Granted: 2024-06-11
- Earliest claimed: 2019-06-14
- Assignees: Innolux Corporation
- Applicants: InnoLux Corporation
- Inventors: Chia-Lun Chen; Shih-Chang Huang; Ming-Hui Chu; Chih-Chang Chen; Kai-Hsien Hsiung; Hui-Chi Wang; Wun-Yuan Su
- Web page: https://patentgrep.com/patent/US12009462B2

## CPC

- H10H 20/855: Optical field-shaping means, e.g. lenses
- B29D 11/00798: {Producing diffusers}
- G02F 1/133606: {including a specially adapted diffusing, scattering or light controlling members}
- G02F 1/133611: {including means for improving the brightness uniformity}
- H10H 20/8514: {characterised by their shape, e.g. plate or foil}
- H10H 20/856: Reflecting means
- H10W 90/00: Package configurations
- B29D 11/00326: {having particular surface properties, e.g. a micropattern}
- G02F 1/133603: {with LEDs}
- G02F 1/133607: {the light controlling member including light directing or refracting elements, e.g. prisms or lenses}
- H10H 20/882: {Scattering means (H10H20/82 takes precedence)}
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- 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
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A light source assembly is provided, including a substrate; a light-emitting element disposed on the substrate; and an optical film at least partially overlapped with the substrate. A diffuser film is at least partially overlapped with the optical film, wherein a haze of the diffuser film is greater than 85%, and a thickness of the diffuser film ranges from 0.04 mm to 0.35 mm. The optical film and the diffuser film are capable of transmitting at least a part of light emitted from the light-emitting element.

## Claims

### Claim 1

A light source assembly, comprising:
a substrate;
a light-emitting element disposed on the substrate;
a reflective layer disposed vertically between the light-emitting element and the substrate;
an optical film at least partially overlapped with the substrate, wherein the optical film comprises a wavelength transformation layer; and
a diffuser film at least partially overlapped with the optical film, wherein the light-emitting element is disposed vertically between the diffuser film and the reflective layer, wherein the diffuser film is directly adjacent to the light-emitting element in a vertical direction, wherein a haze of the diffuser film is greater than 85%, and a thickness of the diffuser film ranges from 0.04 mm to 0.35 mm,
wherein the optical film and the diffuser film are capable of transmitting at least a part of light emitted from the light-emitting element.

### Claim 2 (depends on 1)

The light source assembly of claim 1, wherein the thickness of the diffuser film ranges from 0.1 mm to 0.3 mm.

### Claim 3 (depends on 1)

The light source assembly of claim 1, wherein the diffuser film is disposed between the optical film and the substrate.

### Claim 4 (depends on 1)

The light source assembly of claim 1, wherein the optical film comprises a prism lens.

### Claim 5 (depends on 4)

The light source assembly of claim 4, wherein the diffuser film is disposed between the prism lens and the substrate.

### Claim 6 (depends on 4)

The light source assembly of claim 4, wherein the prism lens is a brightness enhancement film (BEF) or a dual brightness enhancement film (DBEF).

### Claim 7 (depends on 1)

The light source assembly of claim 1, wherein the wavelength transformation layer is a quantum dot film (QDF) or a phosphor film.

### Claim 8 (depends on 1)

The light source assembly of claim 1, wherein the optical film comprises an optical functional film.

### Claim 9 (depends on 8)

The light source assembly of claim 8, wherein the optical functional film is a transflective film.