| 摘要 |
The present invention provides a technique enabling the amount of time required to evaluate the light fastness of a liquid crystal panel to be shortened. A method of testing the light fastness of a liquid crystal panel comprising a pair of substrates and a liquid crystal layer interposed between the substrates comprises the steps of: irradiating a test subject area of the liquid crystal panel with a laser beam, with at least one of the wavelength, the irradiation energy, and the irradiation duration of the laser beam set as a variable parameter; irradiating the liquid crystal panel with an observation beam and detecting the condition of the observation beam after passing through the liquid crystal panel; and evaluating the light fastness of the liquid crystal panel on the basis of a difference in the condition of the observation beam corresponding to the setting of the variable parameter of the laser beam.
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