US 12,229,362 B2
Transparent display device with touch sensor
MiReum Lee, Paju-si (KR); JaeHee Park, Paju-si (KR); and Dojin Kim, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 8, 2023, as Appl. No. 18/533,648.
Claims priority of application No. 10-2022-0185515 (KR), filed on Dec. 27, 2022.
Prior Publication US 2024/0211063 A1, Jun. 27, 2024
Int. Cl. G06F 3/041 (2006.01); G02F 1/1343 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0412 (2013.01) [G02F 1/13439 (2013.01); G06F 3/044 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A transparent display device with a touch sensor, the transparent display device comprising:
a substrate;
a transmissive area;
a non-transmissive area;
a plurality of subpixels provided in the non-transmissive area, the plurality of subpixels including a light emitting element, the light emitting element including an anode electrode, a light emitting layer and a cathode electrode;
the touch sensor disposed in the transmissive area, the touch sensor including a touch sensor electrode; and
a sensing transistor for sensing a voltage of the touch sensor,
wherein:
the cathode electrode and the touch sensor electrode are provided on a same layer and are separated by a first undercut structure;
the cathode electrode extends to the transmissive area such that the cathode electrode is located in the transmissive area and in the non-transmissive area; and
the sensing transistor is disposed to overlap the cathode electrode located in the transmissive area.