US 11,659,736 B2
Light emitting display device
Sung-Ji Yoon, Seoul (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 21, 2020, as Appl. No. 17/129,481.
Claims priority of application No. 10-2019-0180203 (KR), filed on Dec. 31, 2019.
Prior Publication US 2021/0202632 A1, Jul. 1, 2021
Int. Cl. H01L 27/32 (2006.01)
CPC H01L 27/3248 (2013.01) [H01L 27/3246 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A light emitting display device, comprising:
a bank configured to open first light emitting parts and second light emitting parts adjacent to each other;
first anodes and second anodes in the first light emitting parts and the second light emitting parts, respectively, and spaced apart from each other;
electrode patterns configured to be covered by the bank and spaced apart from the first and second anodes, wherein a vertical gap is disposed between each of the electrode patterns and an upper surface of the bank;
a first common layer and a second common layer on the first and second anodes and the bank, and configured to have different carrier mobilities;
a first light emitting layer and a second light emitting layer on the second common layer in the first light emitting parts and the second light emitting parts, respectively; and
a cathode on the first light emitting layer and the second light emitting layer.