Abstract: A defect compensation method for a liquid crystal display apparatus, where a laser beam is irradiated on an alignment film for aligning an orientation of liquid crystal molecules while monitoring the light transmission rate before the arrangement of polarizing plates until a target light transmittance is reached. As a result, the (molecular orientation) function of the alignment film is lowered to prevent the defective pixel from standing out. The method includes measuring the transmittance of the defective pixel, irradiating with a laser beam, measuring the transmittance of the defective pixel again, calculating an optimum irradiation condition based on the results of the after-irradiation measurement and repeating the irradiation and measurement of transmittance until the desired transmittance is obtained.