Measuring method and device for water ripple level of liquid-crystal display device

The invention relates to the technical field of liquid crystal display and discloses a measuring method and device for the water ripple level of a liquid crystal display device. The measuring method includes the steps that a corresponding relation between a standard brightness data difference value and a standard water ripple level is obtained in advance, then brightness data difference values, measured before and after the water ripple level is measured, of a test image displayed by the liquid crystal display device to be tested are obtained, and the corresponding water ripple level is obtained from the corresponding relation so that the water ripple level of the liquid crystal display device to be tested can be obtained accurately by the adoption of a quantitative data analyzing mode, personal errors caused by the mode of determining the water ripple level with human eyes are avoided, and accuracy and objectivity of test results are ensured.