US 12,248,641 B2
Touch panel and touch display device comprising the same
Minsuk Kong, Paju-si (KR); Doman Kim, Paju-si (KR); and Younggyu Moon, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Jun. 28, 2023, as Appl. No. 18/215,652.
Application 18/215,652 is a continuation of application No. 17/538,515, filed on Nov. 30, 2021, granted, now 11,726,593.
Claims priority of application No. 10-2020-0188233 (KR), filed on Dec. 30, 2020.
Prior Publication US 2023/0341963 A1, Oct. 26, 2023
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01); H10K 50/86 (2023.01); H10K 59/12 (2023.01); H10K 59/40 (2023.01)
CPC G06F 3/0412 (2013.01) [G06F 3/0445 (2019.05); G06F 3/0446 (2019.05); H10K 50/86 (2023.02); H10K 59/12 (2023.02); H10K 59/40 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A touch display device comprising:
a display panel;
an adhesive layer disposed on a first part of the display panel;
a touch panel disposed on the first part of the display panel and the touch panel attached to the first part of the display panel based on the adhesive layer, the touch panel including a plurality of touch electrodes;
a first insulation layer disposed on a second part of the display panel;
a second insulation layer disposed on the first insulation layer and in direct contact with the first insulation layer; and
a third insulation layer disposed on the second insulation layer and in direct contact with the second insulation layer such that a touch electrode from the plurality of touch electrodes is between a portion of the second insulation layer and a portion of the third insulation layer,
wherein refractive indices of the first insulation layer and the third insulation layer are lower than a refractive index of the second insulation layer, and
wherein a first thickness of at least part of the first insulation layer or a second thickness of at least part of the third insulation layer is larger than a third thickness of the second insulation layer.