Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
권호 표지

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

스마트폰 곡면유리 성형을 위한 가압시스템 연구

  • 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)
  • 장채은 (한국산업기술대학교 메카트로닉스공학과) ;
  • 김기현 (한국산업기술대학교 메카트로닉스공학과) ;
  • 박재현 (한국생산기술연구원 지능형생산시스템연구부문)
  • Received : 2021.05.11
  • Accepted : 2021.06.18
  • Published : 2021.06.30
Download PDF
⟨ Previous Next ⟩

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

Acknowledgement

본 연구는 경기도의 경기도지역협력연구센터(GRRC)사업[(GRRC 산기 2020-B02), 다중소재 가공기술 혁신연구센터]과 (주)키슬러코리아 지원을 받아 수행되었다. 기획재정부의 지원으로 기업수요기반생산기술실용화 사업[JD210004] 그리고 2021년도 정부(산업통상자원부)의 재원으로 한국산업기술진흥원의 지원(P0008458, 2021년 산업혁신인재성장 지원사업)을 받아 수행되었다.

References

  1. E. M. Huang, K. Yatani, K. N. Truong, J. A. Kientz, and S. N. Patel, "Understanding mobile phone situated sustainability: the influence of local constraints and practices on transferability", IEEE Pervasive Computing, Vol. 8, pp. 46-53, 2009. https://doi.org/10.1109/MPRV.2009.19
  2. A. Paiano, G. Lagioia, A. Cataldo, "A critical analysis of the sustainability of mobile phone use", Resour. Conserv. Recycl., Vol. 73, pp. 162-171, 2013. https://doi.org/10.1016/j.resconrec.2013.02.008
  3. Cha D, Park H, Hwang Y, Kim J, and Kim H, "Experimental study of glass molding process and transcription characteristics of mold surface in molding of aspheric glass lenses", Opt Rev 18, pp. 241-246, 2011. https://doi.org/10.1007/s10043-011-0049-4
  4. Ming, W., Chen, Z., Du, J., Zhang, Z., He, W., Ma, J., Shen, F., "A comprehensive review of theory and technology of glass molding process", Int J Adv Manuf Technol 107, pp. 2671-2706, 2020. https://doi.org/10.1007/s00170-020-05051-0
  5. Aronen A, Karvinen R, "Effect of glass temperature before cooling and cooling rate on residual stresses in tempering", Glass Struct Eng Vol.3, pp.3-15, 2018. https://doi.org/10.1007/s40940-017-0053-6
  6. Guanjun Chen, Bo Tao, Shuang xu and Gongfa Li, "FEM simulation of the effect of cooling rate on prediction of surface deviation of compression molded glass lenses", IOP Conf. Ser.: Mater. Sci. Eng. 307, 2018.
  7. Zhang, Z., Ming, W., Zhang, Y., Yin, L., Xue, T., Yu, H., Chen, Z., Liao, D., and Zhang, G., "Analyzing sustainable performance on high-precision molding process of 3D ultra-thin glass for smart phone", J. Cleaner Prod., Vol. 255, p. 120196, 2020. https://doi.org/10.1016/j.jclepro.2020.120196
  8. Jianwu Yu, Hong Luo, Thai Vinh Nguyen, Yuetuo Lu, Liang Huang and Yingying Zhang, "Mechanism study on microformability of optical glass in ultrasonic-assisted molding process", Int J Appl Glass Sci. 10, pp.103-114, 2018. https://doi.org/10.1111/ijag.12365
  9. Tianfeng Zhou, Yifei Du, Jia Zhou, Zihan Chen, Zhiqiang Liang, and Xibin Wang, "High efficiency fabrication of 3D curved glass by full-motor-driving precision molding", Proc. SPIE, Optical Precision Manufacturing, Testing, and Applications, Vol. 10847, 2018.
  10. He, W., Chen, Z., Ming, W., Du, J., Cao, Y., Ma, J., Wei, A., "Multi-objective optimization of glass multi-station bending machining for smartphone curved screen", J Braz. Soc. Mech. Sci. Eng. Vol. 41, 2019.
  11. H. Kloub, "Force Amplification Mechanixm for Increased Stroke and Speed Responses of Piezoelectric Stick-Slip Miniaturized Linear Motor", The 1st International Electronic Conference on Actuator Technology: Materials, Devices and Applications, 2020.
  12. S. Wen and Q. Xu, "Design of a Novel Piezoelectric Energy Harvester Based on Integrated Multistage Force Amplification Frame", IEEE/ASME Transactions on Mechatronics, Vol.24, pp. 1228-1237, 2019. https://doi.org/10.1109/tmech.2019.2906999