| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an excellent liquid crystal display which causes neither light leak nor color variation even when environmental conditions such as temperature and humidity vary, by providing a transparent film which is nearly free from optical anisotropy, has little difference of physical properties between a machine direction and a direction perpendicular thereto, and ensures a small change in optical anisotropy and a small dimensional change of horizontal and vertical size due to changes in temperature and humidity. <P>SOLUTION: A tensile modulus of elasticity of the transparent film in a machine direction is 2.4×10<SP>9</SP>-4.9×10<SP>9</SP>N/m<SP>2</SP>, a tensile modulus of elasticity of the film in a direction perpendicular to the machine direction is 2.3×10<SP>9</SP>-4.7×10<SP>9</SP>N/m<SP>2</SP>, and the ratio of the tensile modulus of elasticity in the machine direction to the tensile modulus of elasticity in the direction perpendicular to the machine direction is 0.80-1.36. An in-plane retardation value Re of the transparent film is ≤20 and the absolute value of a retardation value Rth in a film thickness direction is ≤25. An optical compensating film, a polarizing plate and the above liquid crystal display using the transparent film are also provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
