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Patent Searching and Data


Title:
DIRECT TYPE BACK LIGHT DEVICE AND DISPLAY APPARATUS HAVING THE SAME
Document Type and Number:
WIPO Patent Application WO/2021/080229
Kind Code:
A1
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.

Inventors:
KIM JONGBIN (KR)
KIM HYUNGSUK (KR)
LEE YOUNGMIN (KR)
JEON DUKJIN (KR)
CHO BYOUNGJIN (KR)
CHOI SUKJU (KR)
Application Number:
PCT/KR2020/013903
Publication Date:
April 29, 2021
Filing Date:
October 13, 2020
Export Citation:
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Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
F21V8/00
Foreign References:
US20150131264A12015-05-14
KR20120094757A2012-08-27
KR20120057726A2012-06-07
KR20180036216A2018-04-09
KR101678337B12016-11-22
Attorney, Agent or Firm:
KIM, Tae-hun et al. (KR)
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