公开(公告)号：US20210116750A1

公开(公告)日：2021-04-22

申请号：US16926131

申请日：2020-07-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jongbin KIM ,  Hyungsuk KIM ,  Youngmin LEE ,  Dukjin JEON ,  Byoungjin CHO ,  Sukju CHOI

IPC: G02F1/13357

Abstract: A direct type backlight device includes a lower chassis, a reflective sheet disposed on a bottom portion of the lower chassis, and a plurality of light emitting diode (LED) bars disposed on an upper surface of the reflective sheet. Each of the plurality of LED bars includes a bar-shaped printed circuit board disposed on the upper surface of the reflective sheet, a plurality of LEDs disposed on an upper surface of the printed circuit board, and a reflective member provided on the upper surface of the printed circuit board. A reflectance of the reflective member is at least 90% of a reflectance of the reflective sheet.

公开(公告)号：US20210302789A1

公开(公告)日：2021-09-30

申请号：US17210025

申请日：2021-03-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyungsuk KIM ,  Jongbin KIM ,  Youngmin LEE ,  Dukjin JEON ,  Byoungjin CHO ,  Sukju CHOI

IPC: G02F1/1335 ,  G02F1/13357

Abstract: A backlight unit includes a printed circuit board; a light source disposed on the printed circuit board and configured to emit light towards an upper side of the backlight unit; a reflective lens disposed on an upper side of the light source; and a reflective tape attached to the printed circuit board so as to surround the light source. At least a part of the reflective tape has a color different from a color of the light emitted by the light source.