US 12,111,536 B2
Light source device
Rina Yamamoto, Tokyo (JP); and Ken Sugiyama, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Nov. 14, 2023, as Appl. No. 18/508,477.
Application 18/068,206 is a division of application No. 17/449,822, filed on Oct. 4, 2021, granted, now 11,573,453, issued on Feb. 7, 2023.
Application 18/508,477 is a continuation of application No. 18/068,206, filed on Dec. 19, 2022, granted, now 11,852,918.
Application 17/449,822 is a continuation of application No. PCT/JP2020/015029, filed on Apr. 1, 2020.
Claims priority of application No. 2019-076284 (JP), filed on Apr. 12, 2019.
Prior Publication US 2024/0085737 A1, Mar. 14, 2024
Int. Cl. G02F 1/00 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/133603 (2013.01) [G02F 1/133607 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A light source device comprising:
a housing body;
a light source substrate located over and accommodated in the housing body;
a plurality of inorganic light-emitting elements over the light source substrate;
an optical sheet located over the plurality of inorganic light-emitting elements, accommodated in the housing body, and spaced away from the light source substrate; and
at least one spacer accommodated in the housing body and in direct contact with a bottom surface of the optical sheet,
wherein a first region of an upper surface of the light source substrate overlaps all of the plurality of inorganic light-emitting elements, and a second region of an upper surface of the light source substrate outside the first region overlaps the at least one spacer,
the at least one spacer includes:
a first supporting layer; and
a second supporting layer over and in contact with the first supporting layer, and the first supporting layer and the second supporting layer respectively include a first material and a second material different from each other.