A light-on jig and a light-on test method, which are used for performing light-on test on a display component (40) of a liquid crystal panel. The light-on jig comprises a body (11), a knocking apparatus (20), and a photographing apparatus (30). The knocking apparatus (20) is used for knocking the display component (40) placed on the body (11). The photographing apparatus (30) is used for photographing the display component (40) after the knocking apparatus (20) performs knocking. By simulating artificial knock on the display component, defects caused by foreign matters, short circuit and circuit break inside the display component are shown, hidden defects are inspected in time, and the product reliability is improved.
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