Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
BACKLIGHT UNIT AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/031355
Kind Code:
A1
Abstract:
According to the present invention, a direct backlight unit is obtained, while suppressing increase in the size of a display control substrate. A direct backlight unit (2) according to the present invention is configured such that a constant current IC (20) having a plurality of constant current circuits (C1-C16) is provided on a substrate (7) which is provided with an LED (10).

Inventors:
SAITOH, Kohji
MORI, Yasuki
UEHATA, Masaki
KONDOH, Kazuya
YOSHIMOTO, Kazuhisa
KAWAMOTO, Kosuke
Application Number:
JP2018/028877
Publication Date:
February 14, 2019
Filing Date:
August 01, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SHARP KABUSHIKI KAISHA (1 Takumi-cho, Sakai-ku Sakai Cit, Osaka 22, 〒5908522, JP)
International Classes:
F21S2/00; F21V19/00; F21V29/503; F21V29/508; F21V29/70; G02F1/133; G02F1/1333; G02F1/13357; H05B37/02; F21Y105/10; F21Y115/10
Foreign References:
JP2011233260A2011-11-17
JP2009129707A2009-06-11
JP2013132107A2013-07-04
JP2011186178A2011-09-22
US20140285748A12014-09-25
JP2008211221A2008-09-11
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (Daiwa Minamimorimachi Building, 2-6 Tenjinbashi 2-chome Kita, Kita-ku, Osaka-sh, Osaka 41, 〒5300041, JP)
Download PDF: