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Journal of Display Technology

Journal of Display Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 9, Iss. 2 — Feb. 1, 2013
  • pp: 82–86

Finite Element Analysis of Four-Point Bending of LCD Panels

K. Hemanth Vepakomma, Jamie Westbrook, Stephen Carley, and Jum Kim

Journal of Display Technology, Vol. 9, Issue 2, pp. 82-86 (2013)


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Abstract

The four-point bend test is one of the most popular strength testing methods used to test LCD panels. Traditionally, a panel is assumed to be either a monolithic piece of glass or two independent pieces of glass sliding against each other. This paper uses finite element analysis to show that a panel behaves like a monolithic piece of glass in the epoxy region (near the edges) but behaves like two pieces of glass at the center. Assuming a panel to be a monolithic piece of glass may overpredict the stresses by a factor of two at the center. Similarly, assuming a panel to be two pieces of glass may underpredict the stresses by a factor of two at the edges. During four-point testing of a panel, the stresses are not uniform in the load-span region and so finite element analysis is required to obtain an accurate stress distribution.

© 2013 IEEE

Citation
K. Hemanth Vepakomma, Jamie Westbrook, Stephen Carley, and Jum Kim, "Finite Element Analysis of Four-Point Bending of LCD Panels," J. Display Technol. 9, 82-86 (2013)
http://www.opticsinfobase.org/jdt/abstract.cfm?URI=jdt-9-2-82

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