公开(公告)号：US20240076226A1

公开(公告)日：2024-03-07

申请号：US18039532

申请日：2021-12-17

Applicant: Corning Incorporated

Inventor： Dipakbin Qasem Chowdhury ,  EuiHo Kim ,  Euisoo Kim ,  Seong-ryong Ryoo

IPC: C03B33/09 ,  C03B33/07 ,  B23K26/38

CPC classification number: C03B33/091 ,  C03B33/074 ,  B23K26/38

Abstract: Provided is a glass substrate heat chamfering method. An edge of a glass substrate (100) is chamfered by applying thermal shock to the edge of the glass substrate (100), thereby peeling a strip (100a) off from the edge of the glass substrate (100). The strip is cut at a predetermined point thereon before being broken due to the weight thereof. The strip (100a) is cut by applying at least one of heat and a laser beam to the predetermined point or by applying a flame (300a) of a torch (300) to the predetermined point. The application of the thermal shock includes brining a heating element (210) into contact with the edge of the glass substrate (100). In the chamfering, the heating element (210) is relatively moved along the edge of the glass substrate (100) while being brought into contact with the edge of the glass substrate (100).

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.