Method for checking alignment accuracy of circular fully-laminated products

Abstract

The invention provides a method for checking alignment accuracy of circular fully-laminated products. The method comprises the following steps: photographing the circular fully-laminated products in anon-lightening state to acquire a position characteristic image of a circular cover plate; acquiring a position characteristic mark of the circular cover plate according to the position characteristic image of the circular cover plate; lightening a circular display module to ensure that the circular display module displays an alignment graph, photographing the circular fully-laminated products ina lightening state to acquire a position characteristic image of the circular display module; acquiring a position characteristic mark of the circular display module according to the position characteristic image of the circular display module; and comparing the position characteristic mark of the circular cover plate with the position characteristic mark of the circular display module to acquirethe alignment accuracy. According to the method for checking the alignment accuracy of the circular fully-laminated products provided by the invention, the alignment accuracy of the circular fully-laminated products can be conveniently and effectively determined, and meanwhile, a checking process is convenient and quick, the production efficiency is effectively ensured, and the production cost isreduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for checking alignment accuracy of circular full-fit products. Background technique [0002] After the existing circular full-fit products are re-fitted, in order to ensure the yield rate, the alignment accuracy is often checked. Specifically, the alignment accuracy can be expressed by coaxiality and / or rotation. The existing inspection methods for alignment accuracy of circular full-fit products often use three-dimensional instruments to test. On the one hand, the efficiency is slow, the operation is complicated, and the inspection is difficult. On the other hand, the product needs to be removed from the production line and cannot be connected. Production, it is difficult to find the problem of poor alignment accuracy in time, which often leads to an increase in defective products and increases production costs. Contents of the invention [0003] The technical probl...

AI Technical Summary

Problems solved by technology

The existing inspection methods for alignment accuracy of circular full-fit products often use three-dimensional instruments to test. On the one hand, the efficiency is slow, the operation is complicated, and the inspection is difficult. On the other hand, the product needs to be removed from the production line and cannot be connected. Production, it is difficult to find the problem of poor alignment accuracy in time, which often leads to an increase in defective products and increases production costs

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