| 摘要 |
PURPOSE:To make cell thickness constant and response speed uniform and to prevent generation of Newton's rings by providing substrates which deform and do not deform with respect to a liquid crystal layer when temp. changes. CONSTITUTION:Plastic films 22, 23 sandwiching a polarizing film 21 are made of a material having roughly the same coefft. of temp. and the substrate 2 does not change to a recessed or projecting shape with respect to a liquid crystal layer 6 when temp. changes. The film 11 on the layer 6 side of the plastic films of the substrate 1 sandwiching a polarizing film 13 has the coefft. of expansion smaller than the coefft. of expansion of the film 12 on the opposite side. The substrate 1 is therefore going to curve in a recessed shape toward the outside but since the substrate 2 does not, on the contrary, deform, the substrate contacts with the spacers 5. Since the spacers 5 are hard, the two substrates 1, 2 are not compressed to the thickness of the spacers or below and the uniform thickness of the cell is maintained over the entire part. The effect of making the cell thickness uniform is much increased if the spacers 5 are put in a sealant 5 as well. |
