US 12,156,419 B2
Display apparatus having a light-emitting device and a touch electrode
Dong Yeon Kim, Seoul (KR); Hoon Kang, Goyang-si (KR); Ju Seong Park, Gimpo-si (KR); Myung Soo Park, Gimpo-si (KR); Young Min Kim, Goyang-si (KR); and Se Wan Oh, Seoul (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Oct. 18, 2021, as Appl. No. 17/504,214.
Claims priority of application No. 10-2020-0150050 (KR), filed on Nov. 11, 2020.
Prior Publication US 2022/0149319 A1, May 12, 2022
Int. Cl. H10K 50/84 (2023.01); H10K 59/40 (2023.01)
CPC H10K 50/84 (2023.02) [H10K 59/40 (2023.02)] 15 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a light-emitting device including a first electrode, a light-emitting layer and a second electrode, which are sequentially stacked on a device substrate;
a bank insulating layer on the device substrate, the bank insulating layer covering an edge of the first electrode;
an encapsulating element disposed on the device substrate, the encapsulating element covering the light-emitting device and the bank insulating layer;
an optical pattern including a lower surface, an upper surface on the lower surface and inclined side surfaces that extend from the lower surface to the upper surface, the lower surface and the upper surface of the optical pattern overlapping with a portion of the first electrode exposed by the bank insulating layer in a direction perpendicular to the device substrate;
an intermediate insulating layer on the upper surface of the optical pattern, the intermediate insulating layer having a hardness greater than the optical pattern; and
a touch structure including a touch electrode and a bridge electrode electrically connected to the touch electrode, the touch electrode and the bridge electrode overlapping with the bank insulating layer outside the portion of the first electrode exposed by the bank insulating layer,
wherein a horizontal width of the upper surface of the optical pattern is less than a horizontal width of the lower surface of the optical pattern,
wherein the inclined side surfaces of the optical pattern overlap the bank insulating layer in the direction perpendicular to the device substrate,
wherein a portion of the intermediate insulating layer overlapping with the upper surface of the optical pattern is exposed by the touch electrode,
wherein the touch electrode includes an inclined portion corresponding to the inclined side surfaces of the optical pattern and disposed on the inclined side surfaces of the optical pattern, and
wherein the inclined side surfaces of the optical pattern are spaced away from the bridge electrode in a direction parallel to the device substrate.
 
9. A display apparatus comprising:
a light-emitting device including a first electrode, a light-emitting layer and a second electrode, which are sequentially stacked on a device substrate;
a bank insulating layer on the device substrate, the bank insulating layer covering an edge of the first electrode;
an optical pattern on the light-emitting device and the bank insulating layer, the optical pattern including a lower surface, an upper surface on the lower surface and inclined side surfaces that extend from the lower surface to the upper surface, the lower surface and the upper surface of the optical pattern overlapping with a portion of the first electrode exposed by the bank insulating layer in a direction perpendicular to the device substrate;
an intermediate insulating layer on the upper surface of the optical pattern which is opposite to the light-emitting device; and
a touch structure including a touch electrode and a bridge electrode electrically connected to the touch electrode, the touch electrode and the bridge electrode overlapping with the bank insulating layer outside the portion of the first electrode exposed by the bank insulating layer,
wherein the intermediate insulating layer includes a material different from the touch electrode,
wherein the upper surface of the optical pattern has a horizontal width less than the lower surface of the optical pattern,
wherein the inclined side surfaces of the optical pattern overlaps the bank insulating layer in the direction perpendicular to the device substrate,
wherein a portion of the intermediate insulating layer overlapping with the upper surface of the optical pattern is exposed by the touch electrode,
wherein the touch electrode includes an inclined portion corresponding to the inclined side surfaces of the optical pattern and disposed on the inclined side surfaces of the optical pattern, and
wherein the inclined side surfaces of the optical pattern are spaced away from the bridge electrode in a direction parallel to the device substrate.