Display device and method of manufacturing display device
AssigneeJapan Display Inc.
InventorToshio TOJO
Life of this patent
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Abstract
A display device is provided including a first electrodes arranged in a matrix shape above an insulation surface, a bank covering an end part of the first electrode and having an opening part exposing an upper surface of the first electrode, an organic layer covering the opening part and including a light emitting layer, and a second electrode covering the bank and the organic layer, wherein the bank has an upper surface part and an inclined part between the upper surface part and an opening in the bank, and a surface of the inclined part has a plurality of concave and convex parts.
Claims12
A display device comprising:
- a first electrode arranged in a matrix shape above an insulation surface;
- a bank covering an end part of the first electrode and having an opening part exposing an upper surface of the first electrode;
- an organic layer covering the opening part and including a light emitting layer;
- and
- a second electrode covering the bank and the organic layer;
- wherein
- the bank has an upper surface part and an inclined part between the upper surface part and the opening in the bank;
- and
- a surface of the inclined part has a plurality of concave and convex parts.
A method of manufacturing a display device comprising:
- forming a first electrodes above an insulation surface;
- coating a photosensitive organic resin material above the first electrode;
- exposing the photosensitive organic resin material to a monochromatic light having a wavelength in a range from 300 nm to 500 nm;
- forming a bank covering an end part of the first electrode and having an opening part exposing an upper surface of the first electrode by developing the photosensitive organic resin material;
- baking;
- forming an organic layer including a light emitting layer to cover the opening part;
- and
- forming a second electrode to cover the bank and the organic layer;
- wherein
- in the exposure step, the plurality of concave and convex parts are formed in a film thickness direction of the bank by weakening and strengthening the exposure level of the photosensitive organic resin material in a layer direction using a standing wave by an incident wave and reflective wave of the monochromatic light.
Dependencies are inferred from the claim text.