Organic light emitting display device having a reflective barrier and method of manufacturing the same
AssigneeLG Display Co., Ltd.
InventorsSeong-Joo LEE, Jeong-Oh KIM, Jung-Sun BEAK
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Abstract
Disclosed are an organic light emitting display device to improve optical efficiency and prevent deterioration in reliability of thin film transistors, and a method of manufacturing the same. The organic light emitting display device includes a mirror wall which is disposed on a substrate such that the mirror wall surrounds a light emitting area of each sub-pixel where a light emitting element is disposed, thus preventing total reflection of light produced in the light emitting element and improving optical efficiency by reflecting light travelling toward a non-emitting area to be directed to the light emitting area.
Claims25
An organic light emitting display device comprising:
- a substrate;
- a sub-pixel on the substrate including a light emitting element disposed in a light emitting area;
- a reflective barrier overlying the substrate and surrounding a perimeter of the light emitting area of the sub-pixel, the reflective barrier including:
- an insulation layer surrounding the perimeter of the light emitting area of the sub-pixel, the insulation layer having an upper surface, a first side surface facing the light emitting area of the sub-pixels, and a second side surface spaced laterally apart from the first side surface;
- a reflective layer disposed on the upper surface, the first side surface, and the second side surface of the insulation layer;
- and
- a bank disposed on the reflective barrier.
A display device, comprising:
- a substrate;
- a sub-pixel on the substrate, the sub-pixel including a light emitting element disposed in a light emitting area;
- a reflective barrier on the substrate and laterally surrounding a perimeter of the light emitting area of the sub-pixel, the reflective barrier including:
- an insulation layer having an upper surface and an inner sidewall facing the light emitting area of the sub-pixel;
- and
- a reflective layer on the upper surface of the insulation layer, the reflective layer extending from the upper surface of the insulation layer over the inner sidewall of the insulation layer.
Dependencies are inferred from the claim text.