Patent ID: 9568303
Date: 2017-02-14
CPC Classifications: G01B,G02B,H04N

Claim:
1. A sealing inspection device for inspecting a state of a sealed area, the device comprising: a scan unit through which a display device substrate comprising a top plate coupled to a bottom plate by a sealing member in the sealed area passes; and a photographing unit through which the display device substrate which has passed through the scan unit, further passes, wherein the scan unit generates coordinate values of the sealed area of the display device substrate, detects a defective region in the sealed area of the display device substrate, and comprises a plurality of scan cameras, wherein the defective region is defined where upper and lower surfaces of the sealing member are in different planes from each other and have different widths from each other; and the photographing unit generates an image of the detected defective region of the sealed area of the display device substrate using the generated coordinate values, the image showing widths of both the upper and lower surfaces of the sealing member in the detected defective region, measures an effective sealing width of the sealed area using the generated image, and comprises a measuring camera, wherein the effective sealing width of the sealed area is defined as the smaller of the widths of the upper and lower surfaces of the sealing member which are both shown in the image of the detected defective region.