| 摘要 |
A light guide plate of the present invention is a polymer of an aromatic dihydroxy compound and a diaryl carbonate, where a mole ratio of the aromatic dihydroxy compound and the diaryl carbonate is 1:1.02-1.35, and a weight-average molecular weight is 10,000 - 18,000 g/mol. The polymer is injection-molded from an aromatic poly carbonate resin which has a content of a terminal hydroxyl group of 5-30 mole % of a total terminal group, and has color deflection of 0.005-0.020 which is measured after being maintained for 500 hours under the condition of the temperature of 80°C and relative humidity of 90%, and has a percentage (brightness uniformity) of 80-95% between a minimum brightness and a maximum brightness. The light guide plate can reduce a yellowing phenomenon during injection molding, and has low color deflection under high temperature and high humidity condition, and has excellent discoloration resistance and brightness quality (brightness uniformity), by applying a specific aromatic polycarbonate resin. |
