The residual stress of the glass substrate might be one of causes to produce the non-uniform light distribution defect, i.e.
Mura, in thin film transistor-liquid crystal display (TFT-LCD) panels. Glass is a birefringent material with very low
birefringence. Furthermore, the thinner and thinner thickness request from the market makes the traditional
photoelasticity almost impossible to measure the residual stresses produced in thin glass plates. Recently, a low-level
stress measurement method called transmissivity extremities theory of photoelasticity (TEToP) was successfully
developed to measure the residual stress in glass plate. Besides, to measure the stress of the glass plate in the TFT-LCD
panel whose rear surface may has different kinds of coatings, an advanced reflection photoelasticity was also developed.
In this paper, three commercially available glass plates with 0.33mm nominal thickness and three glass circular disks
with different coatings were inspected to verify the feasibility of the TEToP and the advanced reflection photoelasticity,