US 11,852,919 B1
Backlight unit and display device
Motoaki Okitsu, Kameyama (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Kameyama (JP)
Filed on Jul. 7, 2023, as Appl. No. 18/219,132.
Claims priority of provisional application 63/388,456, filed on Jul. 12, 2022.
Int. Cl. G02F 1/13357 (2006.01); G02F 1/1333 (2006.01)
CPC G02F 1/133603 (2013.01) [G02F 1/133382 (2013.01); G02F 1/133608 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A backlight unit comprising:
an LED substrate including a first main surface and a second main surface on a side opposite to the first main surface;
a plurality of LED elements arranged on the first main surface;
one or more drive IC elements arranged on the second main surface;
a chassis disposed on the second main surface side of the LED substrate; and
one or more IC element covers each being in direct or indirect contact with a corresponding drive IC element of the one or more drive IC elements,
wherein the chassis includes one or more protrusions respectively corresponding to the one or more drive IC elements,
each of the one or more protrusions includes an opening exposing the corresponding drive IC element when viewed from a normal direction of the second main surface, and
the IC element cover fits in the protrusion.