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Study on Pressure System for Curved Glass Fabrication of a Smart Phone  

Jang, Chae Eun (Department of Mechatronics Engineering, Korea Polytechnic University)
Kim, Kihyun (Department of Mechatronics Engineering, Korea Polytechnic University)
Park, Jaehyun (Intelligent Manufacturing System R&D Department, Korea Institute of Industrial Technology)
Publication Information
Journal of the Semiconductor & Display Technology / v.20, no.2, 2021 , pp. 51-55 More about this Journal
Abstract
With the recent development of various smartphone designs in the smartphone market, the use of curved cover glass has been required, and interest in curved glass production has increased. In this paper, we designed a pressurization system that simplified the size of the system using a wedge amplification mechanism for smartphone curved glass molding systems. The pressurization system consisted of a linear motor, a wedge, and a force sensor. The wedge was used to amplify the force, and the piezoelectric sensor was used to measure the force. In addition, the proposed amplification mechanism was confirmed to have an error of 1.27% through an experiment compared to the simulation, and the pressurization error of 0.76% for the pressurization profile 3,500N was verified through an experiment.
Keywords
Glass bending machine; Pressure; Piezo; Control; Curved glass;
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