Method for automatically detecting dead pixels of mobile phone screen before assembling

Abstract

The invention discloses a method for automatically detecting dead pixels of a mobile phone screen before assembling. According to the method, detection is carried out before components of the mobile phone screen are assembled, the components of the mobile phone screen are fixed temporarily through an installation seat and provided with voltages of different voltage values so as to display pure-color pictures of different colors, a high-definition camera is used for taking pictures, image analysis software of a computer is used for analyzing the pictures, and whether the components of the mobile phone screen have the dead pixels can be quickly detected. The detection method is simple, convenient and quick to implement, and can detect whether the mobile phone screen has the dead pixels before assembling, parts of subsequent detection items are reduced, the phenomena that mobile phones are returned to a production line to be repaired or the mobile phone screens are replaced or mobile phones are scrapped are subsequently reduced, production efficiency is improved, and production cost is lowered.

Description

technical field [0001] The invention relates to the technical field of screen detection, in particular to a method for automatically detecting dead pixels before the screen of a mobile phone is assembled. Background technique [0002] In the existing technology, there may be defects in the screen of the mobile phone. The defects include dead pixels, geometric distortion and chromatic aberration. The mobile phone is powered, the mobile phone screen is lit, and the inspection operation is completed through the manual inspection of the inspection workers or the automatic inspection equipment. If the inspection finds that the mobile phone screen is defective, it will return to the production line for repair, replace the screen or scrap it. The detection efficiency is not high, and the mobile phone is returned to the production line. The workload of repairing or replacing the screen is greater, and the scrapping process causes serious waste and higher production costs. For mobil...

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, there may be defects in the screen of the mobile phone. The defects include dead pixels, geometric distortion and chromatic aberration. The mobile phone is powered, the mobile phone screen is lit, and the inspection operation is completed through the manual inspection of the inspection workers or the automatic inspection equipment. If the inspection finds that the mobile phone screen is defective, it will return to the production line for repair, replace the screen or scrap it. The detection efficiency is not high, and the mobile phone is returned to the production line. The workload of repairing or replacing the screen is greater, and the scrapping process will cause serious waste and higher production costs

For mobile phone screens, dead pixels are more serious defects. During the detection process, it is found that the proportion of dead pixels is larger. Therefore, it is necessary to provide a method that can quickly detect dead pixels in mobile phone screen assembly.