| 摘要 |
PURPOSE:To decrease the material strain of a pair of upper and lower transparent substrates arising from the bonding force from the outside by forming plural grooves perpendicular to the bending direction on the surfaces of said substrates and the side opposite from the surfaces facing a liquid crystal. CONSTITUTION:The plural continuous pulse-like grooves 15 extending in the transverse direction are formed on the outside flank of the upper substrate 11 and the similar grooves 15 are also formed on the outside flank of the lower substrate 12. The grooves 15 are formed in approximately parallel with each other. The substrates 11 and 12 are joined in such a manner that the grooves are approximately paralleled in the joined state. The tensile force and shrinkage force to each substrate are relieved by the grooves 15 and the tension generated near the outside flank within each substrate is decreased. The stress in the substrates is thus decreased. |
