Automatic alignment lighting detection method for liquid crystal screen

Abstract

The invention discloses an automatic alignment lighting detection method for a liquid crystal screen. According to the method, an X / Y / theta position correction system, an electric cylinder lifting mechanism, a probe module, a backlight source and a workbench are involved, a visual system is used for acquiring a position of a product during each feeding and transmitting position information and a motion instruction to the position correction system by means of an industrial personal computer, the backlight source and the workbench are installed on the position correction system, receive the motion instruction of the visual system and correct the product to a target position, the probe module is installed at the end of an electric cylinder installed on the electric cylinder lifting mechanism and is used for executing a lifting / pressing action according to the instruction of the industrial personal computer, the probe module makes contact with a product test point and transmits a test signal into the product to test a function of the product, and the backlight source is used for providing a required high-brightness backlight source for product testing. According to the method, the visual system cooperates with a platform to accurately position the product fed every time, so that whether the function of the product has defects or not can be normally tested each time when the product is pressed.

Description

technical field [0001] The invention relates to the field of machine tool auxiliary devices, in particular to a liquid crystal screen automatic alignment point lamp detection method. Background technique [0002] Before the LCD screen is assembled, it is necessary to test whether there are any defects in its function, so as to prevent defective products from flowing into the subsequent process. The test equipment currently used has a test accuracy of 0.1mm, which cannot meet the test accuracy of 0.005mm; the current positioning method is mechanical positioning, and the position accuracy of each feeding cannot be guaranteed, which affects the normal test function. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides a liquid crystal screen automatic alignment point lamp detection method, using the visual system to cooperate with the platform to precisely position the product for each feeding, to ensure that each prod...

AI Technical Summary

Problems solved by technology

The test equipment currently used has a test accuracy of 0.1mm, which cannot meet the test accuracy of 0.005mm; the current positioning method is mechanical positioning, and the position accuracy of each feeding cannot be guaranteed, which affects the normal test function.