US 12,369,484 B2
Display device
Byung-Gon Kum, Hwaseong-si (KR); Gyusu Lee, Asan-si (KR); Jae-Hwan Jeon, Seongnam-si (KR); Da Wun Kim, Asan-si (KR); Hyunsu Park, Hwaseong-si (KR); and Ji Sang Seo, Cheonan-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Apr. 12, 2022, as Appl. No. 17/718,790.
Claims priority of application No. 10-2021-0084562 (KR), filed on Jun. 29, 2021.
Prior Publication US 2022/0416194 A1, Dec. 29, 2022
Int. Cl. H10K 50/84 (2023.01); H10K 50/115 (2023.01); H10K 50/844 (2023.01); H10K 50/87 (2023.01); H10K 59/38 (2023.01); H10K 59/80 (2023.01)
CPC H10K 59/8731 (2023.02) [H10K 50/115 (2023.02); H10K 50/844 (2023.02); H10K 50/87 (2023.02); H10K 59/38 (2023.02); H10K 59/8722 (2023.02); H10K 59/8794 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel; and
a heat radiation sheet disposed under the display panel, wherein a first region and a second region disposed outside and surrounding the first region when viewed in a thickness direction thereof are defined in the heat radiation sheet,
wherein the heat radiation sheet comprises:
a heat radiation layer disposed in the first region, wherein the heat radiation layer does not overlap the second region in the thickness direction;
a lower protective layer disposed under the heat radiation layer, wherein a plurality of openings is defined in the lower protective layer; and
an upper protective layer placed between the display panel and the heat radiation layer, wherein a portion of the lower protective layer in the second region and a portion of the upper protective layer in the second region are coupled to each other.