公开(公告)号：US10234620B2

公开(公告)日：2019-03-19

申请号：US15198682

申请日：2016-06-30

Applicant: LG ELECTRONICS INC.

Inventor： Woosuk Lee ,  Guenhwan Kim ,  Juyoung Joung ,  Wondo Kee

IPC: F21V7/04 ,  F21V8/00 ,  G02F1/1368 ,  G02F1/1335

Abstract: A light guide plate includes a light introduction surface to receive light supplied from a light source module and a light emission surface to emit the light outward, the light emission surface having a larger area than the light introduction surface. The light guide plate is of a material that transmits light and absorbs light in an absorption wavelength band. The light guide plate further includes a plurality of color patterns to convert the light supplied from the light source module into light in the absorption wavelength band.