Patent ID: 9093662
Filing Date: 2015-07-28
Classification: G02F,H01L

Abstract:
1. A sealing inspection device for detecting a bonding error at a cured sealing region between an upper and a lower plate in a flat panel display apparatus in which the upper and lower plates are bonded to each other by a sealing member, the sealing inspection device comprising: a light source emitting light; a polarizer polarizing the light emitted from the light source, the polarized light being incident on and reflected from the cured sealing region of the flat panel display; an optical spectrum analyzer configured to analyze the light reflected from the sealing region with respect to wavelength ranges to determine whether a bonding error exists at the sealing region based on measurement by the optical spectrum analyzer of the reflectance of the reflected light with respect to the wavelength ranges, and comparing the measured reflectance to a reference value to determine whether the bonding error exists at the cured sealing region; and a beam splitter configured to change a path of the reflected light toward the optical spectrum analyzer.