Display device having an auxiliary electrode
AssigneeLG Display Co., Ltd.
InventorsSung-Bin SHIM, Hye-Sook KIM
Life of this patent
Estimating the term…
Abstract
A display device capable preventing or reducing luminance unevenness due to a voltage drop using an auxiliary electrode is provided. The display device may include a bank insulating layer that forms an under-cut region for connecting the auxiliary electrode to an upper electrode of a light-emitting structure. The bank insulating layer may include a first bank penetrating hole overlapping with the auxiliary electrode and a second bank penetrating hole spaced apart from the first bank penetrating hole. The second bank penetrating hole may overlap a lower penetrating hole of a lower passivation layer which is disposed between the auxiliary electrode and the bank insulating layer. The lower penetrating hole may overlap the auxiliary electrode.
Claims20
A display device, comprising:
- an auxiliary electrode on a first substrate;
- a passivation layer on the auxiliary electrode;
- a first hole extending through the passivation layer and overlying at least a portion of the auxiliary electrode;
- a bank insulating layer on the passivation layer;
- a first bank layer hole extending through the bank insulating layer and partially overlying the first hole;
- a second bank layer hole extending through the bank insulating layer and overlying the first hole, the second bank layer hole being spaced apart from the first bank contact hole;
- and
- an over-coat layer between the passivation layer and the bank insulating layer.
A display device, comprising:
- an auxiliary electrode on a substrate;
- a passivation layer on the auxiliary electrode;
- a first hole extending through the passivation layer and exposing the auxiliary electrode;
- a bank insulating layer on the passivation layer;
- and
- a second hole extending through the bank insulating layer and overlapping the auxiliary electrode, a perimeter of the second hole overlapping the first hole,
- wherein the perimeter of the second hole includes one or more protruding portions that extend the perimeter of the second hole outwardly in relation to adjacent portions of the perimeter.
A display device, comprising:
- a first substrate;
- an auxiliary electrode on the first substrate;
- a passivation layer on the auxiliary electrode, the auxiliary electrode being exposed by a first hole that extends through the passivation layer;
- a bank insulating layer on the passivation layer;
- a second hole that extends through the bank insulating layer over a first portion of the auxiliary electrode;
- an undercut region between the bank insulating layer and a second portion of the auxiliary electrode, the bank insulating layer having a portion that overlies the second portion of the auxiliary electrode in the undercut region;
- and
- a third hole that extends through the bank insulating layer in the undercut region.
Dependencies are inferred from the claim text.