Light-emitting display device and method of manufacturing the same
AssigneeLG Display Co., Ltd.
InventorsDong-Hyeok Lim, Song-Yi Jeong, Kyu-Il Han, Nam-Seok Yoo, Yu-Ri Park
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Abstract
A light-emitting display device includes a substrate having a plurality of subpixels; a first electrode provided in each of the subpixels; a bank defining an emission part in each of the subpixels and having an upper surface that has a larger degree of surface roughness than an upper surface of the first electrode; a first common layer over the subpixels and covering the first electrode and the bank; a light-emitting layer on the first common layer and corresponding to the emission part of each of the subpixels; and a second common layer and a second electrode stacked on the light-emitting layer over the plurality of subpixels.
Claims20
A light-emitting display device comprising:
- a substrate having a plurality of subpixels;
- a first electrode provided in each of the subpixels;
- a bank defining an emission part in each of the subpixels and having an upper surface that has a larger degree of surface roughness than an upper surface of the first electrode;
- a first common layer over the subpixels and covering the first electrode and the bank;
- a light-emitting layer on the first common layer and corresponding to the emission part of each of the subpixels;
- a second common layer and a second electrode stacked on the light-emitting layer over the plurality of subpixels;
- and
- a roughness-inducing layer between the first electrode of one of the subpixels and the first electrode of an adjacent subpixel and under the bank.
A method of manufacturing a light-emitting display device, the method comprising:
- forming a plurality of subpixels on a substrate;
- forming a first electrode in each of the subpixels;
- forming a bank to define an emission part in each of the subpixels, wherein the bank has an upper surface that has a larger degree of surface roughness than an upper surface of the first electrode;
- forming a first common layer over the subpixels to cover the first electrode and the bank;
- forming a light-emitting layer on the first common layer to correspond to the emission part of each of the subpixels;
- forming a second common layer on the light-emitting layer over the subpixels;
- forming a second electrode on the second common layer;
- and
- forming a roughness-inducing layer between the first electrode of one of the subpixels and the first electrode of an adjacent subpixel, between the forming the first electrode and the forming the bank.
A light-emitting display device comprising:
- a plurality of subpixels disposed on a substrate;
- a first electrode at each subpixel;
- a bank overlying an edge of the first electrode;
- a roughness-inducing layer under the bank between the first electrode of one of the subpixels and the first electrode of an adjacent subpixel;
- an emission part of the subpixels defined by the bank;
- a light-emitting layer corresponding to the emission part of the subpixels;
- and
- a second electrode on the light-emitting layer over the plurality of subpixels,
- wherein the roughness-inducing layer has an upper surface that has a larger degree of surface roughness than an upper surface of the first electrode.
Dependencies are inferred from the claim text.