| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystal display which is reduced in light leakage after receiving changes in temperature and humidity, a cellulose acylate film, a phase difference film, and a polarizing plate for materializing the liquid crystal display, and methods for producing these. SOLUTION: The method for producing the cellulose acylate film includes a film making process in which a cellulose acylate solution is cast on a metal support to make the film, the first stretching process in which the film is stretched at a temperature of Tg+(0-60)°C in a region of 30-65 mass% volatilization, and the second stretching process in which the film is stretched perpendicularly to the direction of the stretching in the first stretching process at a temperature of Tg+(0-60)°C in a region of 0-35 mass% volatilization. COPYRIGHT: (C)2008,JPO&INPIT |
