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Manufacturing process of bezel frame for strength-reinforced TFT LCD module by progressive hemming of SUS304 stainless steel sheet

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Abstract

In this study, the design procedure for a progressive multi-hemming forming process has been proposed for manufacturing bezel frames for strength-reinforced TFT LCD (Thin-film-transistor liquid-crystal display) modules. First, a strength analysis was performed using Finite element (FE) simulations to determine the minimum number of required folding edges. Subsequently, anoother FE analysis was carried out in order to investigate the effects of the process parameters on the dimensional accuracy of the bezel frame and to design the progressive hemming process. The analytical results were validated by hemming experiments performed using SUS304 stainless steel with a thickness of 0.3 mm. Finally, the quality of the bezel frame was estimated through measurements of its dimensional accuracy and bending stiffness. From the experimental results, it was confirmed that a bezel frame with a height distribution of 1.5±0.05 mm and a respectable bending stiffness of 70 N/mm could be manufactured using the proposed process.

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Author information

Authors and Affiliations

  1. Division of Marine Engineering, Korea Maritime and Ocean University, Busan, 49112, Korea

    Kyung-Hun Lee

  2. ERC/ITAF, Pusan National University, Busan, 46241, Korea

    Dae-Cheol Ko

  3. Dongnam Regional Division, Korea Institute of Industrial Technology, Jinju, 52791, Korea

    Jung-Min Lee & Chan-Joo Lee

  4. Faculty of Mechanical and Automotive Engineering, Keimyung University, Daegu, 42601, Korea

    Seon-Bong Lee

  5. School of Mechanical Engineering, Pusan National University, Busan, 46241, Korea

    Byung-Min Kim

Authors
  1. Kyung-Hun Lee
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  2. Dae-Cheol Ko
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  3. Jung-Min Lee
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  4. Chan-Joo Lee
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  5. Seon-Bong Lee
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  6. Byung-Min Kim
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Corresponding author

Correspondence to Byung-Min Kim.

Additional information

Kyung-Hun Lee received his bachelor’s and doctor’s degree at Pusan National University, Korea, in 2007 and 2013, respectively. Dr. Lee is concurrently an assistant professor of Division of Marine Engineering at Korea Maritime and Ocean University in Busan, Korea.

Byung-Min Kim received his bachelor’s, master’s and doctor’s degree at Pusan National University, Korea, in 1979, 1984 and 1987, respectively. Dr. Kim is currently a professor of School of Mechanical Engineering at Pusan National University in Busan, Korea.

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Lee, KH., Ko, DC., Lee, JM. et al. Manufacturing process of bezel frame for strength-reinforced TFT LCD module by progressive hemming of SUS304 stainless steel sheet. J Mech Sci Technol 30, 1103–1109 (2016). https://doi.org/10.1007/s12206-016-0214-6

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  • DOI: https://doi.org/10.1007/s12206-016-0214-6

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