US 12,437,710 B2
Display device having pixel circuit layer with transistors on different layers
Ji Hye Lee, Yongin-si (KR); Jin Seon Kwak, Yongin-si (KR); Kyung Bae Kim, Yongin-si (KR); and Yong Hee Lee, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Apr. 8, 2024, as Appl. No. 18/629,851.
Claims priority of application No. 10-2023-0061186 (KR), filed on May 11, 2023.
Prior Publication US 2024/0379049 A1, Nov. 14, 2024
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0426 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a base layer;
a pixel circuit layer on the base layer, the pixel circuit layer comprising a pixel circuit; and
a light emitting layer on the pixel circuit layer, the light emitting layer comprising a light emitting element electrically connected to the pixel circuit,
wherein the pixel circuit layer comprises:
a lower transistor on the base layer, the lower transistor comprising a silicon semiconductor;
an upper transistor on the lower transistor, the upper transistor comprising an oxide semiconductor; and
an intermediate conductive layer between the lower transistor and the upper transistor, and
wherein the intermediate conductive layer comprises a data line and a first power line, each of which is electrically connected to the pixel circuit.