公开(公告)号：US10823906B2

公开(公告)日：2020-11-03

申请号：US16597683

申请日：2019-10-09

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  KOLONGLOTECH. Inc

发明人： Hong Chan Jeon ,  Hong Mo Koo ,  Mi Jung Yun ,  Dong Kyu Oh ,  Seul Ah Lee ,  Byoung Chul Park

IPC分类号： F21V8/00 ,  G02F1/13357

摘要： Disclosed are a backlight unit for planar lighting apparatuses and a manufacturing method thereof. The backlight unit simplifies a layer structure to be formed into the shape of a vehicle interior trim part, and has a thin thickness and improved flexibility. The backlight unit includes a light emitting device configured to emit light; a light guide panel having polycarbonate and configured to disperse the light received from a light emitting device; a reflective sheet having fibers and provided below the light guide panel to reflect the light dispersed by the light guide panel; and an acrylic adhesive sheet interposed between the light guide panel and the reflective sheet. The reflective sheet includes pores.

公开(公告)号：US11175015B1

公开(公告)日：2021-11-16

申请号：US16950986

申请日：2020-11-18

申请人： KOLONGLOTECH. Inc

发明人： Byoung Chul Park

IPC分类号： F21V7/24 ,  F21V13/04 ,  F21K9/90 ,  F21V8/00 ,  F21V7/04 ,  F21Y115/15

摘要： Disclosed herein is a flat lighting apparatus having excellent flexibility and formability to be molded in various shapes as well as excellent optical properties such as brightness. The flat lighting apparatus according to present invention comprises a light guide plate for dispersing light and a reflector formed on a lower portion of the light guide plate to reflect light dispersed by the light guide plate. The reflector has a multi-layered structure including a first layer and a second layer.