Liquid crystal display device

A liquid crystal display device comprising:

• a first polarizer plate that is disposed on one side of a liquid crystal cell in which a liquid crystal layer is sandwiched between two electrode-equipped substrates;
• a second polarizer plate that is disposed on the other side of the liquid crystal cell;
• a first phase plate that is disposed between the first polarizer plate and the liquid crystal cell;
• a second phase plate that is disposed between the second polarizer plate and the liquid crystal cell;
• a third phase plate that is disposed between the first polarizer plate and the first phase plate;
• and
• a fourth phase plate that is disposed between the second polarizer plate and the second phase plate,
• wherein
• the first phase plate and the third phase plate cooperate to impart a phase difference of a ¼ wavelength to linearly polarized light that emerges from the first polarizer plate, and the second phase plate and the fourth phase plate cooperate to impart a phase difference of a ¼ wavelength to linearly polarized light that emerges from the second polarizer plate,
• slow axes in planes of the first phase plate and the second phase plate are substantially parallel,
• a slow axis of the first phase plate and the second phase plate, a slow axis of the third phase plate and a slow axis of the fourth phase plate are disposed in such directions as to cancel in-plane anisotropies
• a crossed-axes angle between slow axes in planes of the first phase plate and the third phase plate is 60°,
• a crossed-axes angle between slow axes in planes of the second phase plate and the fourth phase plate is 60°, and
• a crossed-axes angle between slow axes in planes of the third phase plate and fourth phase plate is 60°.