Premium
62.4: Computer Simulation of LCD Sheet Distortion Associated with Gravity Mura Defect
Author(s) -
Powell W. R.,
Hoysan S. F.,
Lee B. K.
Publication year - 2004
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1821380
Subject(s) - mura , hydrostatic pressure , hydrostatic equilibrium , distortion (music) , materials science , stiffness , finite element method , composite material , liquid crystal display , structural engineering , mechanics , engineering , physics , cmos , quantum mechanics , amplifier , optoelectronics
A computer simulation of the pressures and deformations of LCD glass sheets was developed using the finite element analysis (FEA) method. This model was used to predict the bulging of the sheets associated with the Gravity Mura optic defect. The importance of internal hydrostatic pressure in the LC fluid, stiffness of the spacers and glass sheet thickness were examined. The behavior of the model is nearly independent of glass thickness for values between 0.635 and 1.10 mm. All show the bulging starting at essentially the same internal pressure (0.92 atm.). Increasing the elastic stiffness of the spacers by a factor of 5 did not significantly impact the behavior of this model. The model is also sensitive to thermal expansion of the fluid.