公开(公告)号：US20250020855A1

公开(公告)日：2025-01-16

申请号：US18712880

申请日：2022-11-15

Applicant: CORNING INCORPORATED

Inventor： Gun-sang Yoon ,  Hong Yoon

IPC: F21V8/00

Abstract: Provided is an illumination device including a light extraction film having a light guide plate including one or more edges and including a transparent substrate and a light extraction film on the light guide plate, where the film includes a matrix layer, and a plurality of scattering particles embedded in the matrix layer, and the plate includes first areas in which a volume density of the particles of the light extraction film is substantially constant, and second areas in which a volume density of the particles of the light extraction film varies along a Gaussian profile.

公开(公告)号：US12189167B2

公开(公告)日：2025-01-07

申请号：US17915869

申请日：2021-03-30

Applicant: Corning Incorporated

Inventor： Donghyun Kim ,  Gun-sang Yoon

IPC: F21V8/00

Abstract: Provided are a light guide panel and a lighting device including the same. The light guide panel includes a base substrate and a light-scattering layer provided on at least one of top and bottom surfaces of the base substrate with a matrix forming a layer on the base substrate and light-scattering particles dispersed in the matrix. A first portion of the light-scattering layer is distant from a light incident surface of the base substrate. A second portion of the light-scattering layer is located closer to the light incident surface than the first portion.

公开(公告)号：US20230127424A1

公开(公告)日：2023-04-27

申请号：US17915869

申请日：2021-03-30

Applicant: Corning Incorporated

Inventor： Donghyun Kim ,  Gun-sang Yoon

IPC: F21V8/00

Abstract: Provided are a light guide panel and a lighting device including the same. The light guide panel includes a base substrate and a light-scattering layer provided on at least one of top and bottom surfaces of the base substrate with a matrix forming a layer on the base substrate and light-scattering particles dispersed in the matrix. A first portion of the light-scattering layer is distant from a light incident surface of the base substrate. A second portion of the light-scattering layer is located closer to the light incident surface than the first portion.

公开(公告)号：US11112559B2

公开(公告)日：2021-09-07

申请号：US16374381

申请日：2019-04-03

Applicant: CORNING INCORPORATED

Inventor： Euisoo Kim ,  Seong-ryong Ryoo ,  Gun-sang Yoon

IPC: F21V8/00

Abstract: A method of fabricating a light guide plate (LGP), an LGP fabricated thereby, and an illumination device having the same. The method includes preparing an LGP and fabricating a light-scattering layer by printing a printing solution including light-scattering particles on an overall bottom surface of the LGP. The light-scattering layer may be fabricated by at least one of a first method of controlling the printing such that the density of the light-scattering particles gradually increases with increases in a distance from the light-emitting diode facing a side surface of the LGP and a second method of controlling the printing such that the thickness of the light-scattering layer gradually increases with increases in the distance from the light-emitting diode. A luminous point through can be prevented from being viewed by a front observer, a process can be simplified, and light distribution similar to Lambertian distribution can be obtained.