Patent ID: 9091661
Filing Date: 2015-07-28
Classification: G01N

Abstract:
1. A method of measuring damage to an organic layer of a thin film encapsulation, the method comprising: preparing a thin film encapsulation structure in which an inorganic layer is stacked on an organic layer by a plasma process, in which a light-emitting material is mixed; irradiating light to the thin film encapsulation structure performed by a light-irradiating unit so that light is emitted from the light-emitting material, intensity of the light emitted from the light-emitting material decreasing over time; detecting a light emission lifetime of the light emitted from the light-emitting material performed by a light-receiving unit; and determining a degree of damage to the organic layer based on the light emission lifetime performed by a controller, wherein the organic layer comprises one of an epoxy-based material and an acrylic material and generates one of carbonyl, carboxyl, and hydroxyl groups when the organic layer is damaged by the plasma process, and the higher the content of the one of carbonyl, carboxyl, and hydroxyl groups, the higher the degree of the damage to the organic layer.