Polarization module and image display apparatus

An image display apparatus comprising:

• a display panel having a first pixel region for displaying an image for a right eye and a second pixel region for displaying an image for a left eye;
• and
• a polarization module disposed on the display panel and including:
• a polarizer;
• a plurality of first quarter-wave plates disposed on a first side of the polarizer such that their optical axes are tilted at 45 degrees with respect to a polarization axis of the polarizer;
• a plurality of second quarter-wave plates disposed on the first side of the polarizer such that their optical axes are tilted at 45 degrees with respect to the polarization axis of the polarizer in a direction opposite to the tilting direction of the optical axes of the first quarter-wave plates;
• and
• a transparent resin plate having optical isotropy disposed on the plurality of first quarter-wave plates and the plurality of second quarter-wave plates, the display panel being mounted to a second side of the polarizer opposite to the first side, the plurality of first quarter-wave plates being disposed to face the first pixel region of the display panel, the plurality of second quarter-wave plates being disposed to face the second pixel region of the display panel,
• wherein a distance between a light source of the display panel mounted on the second side of the polarizer and a surface of the transparent resin plate opposite to a surface facing the polarizer is set based on pitch of pixels of the display panel.

A polarization module comprising:

• a polarizer;
• a plurality of first quarter-wave plates disposed on the polarizer such that their optical axes are tilted at 45 degrees with respect to a polarization axis of the polarizer;
• a plurality of second quarter-wave plates disposed on the polarizer such that their optical axes are tilted at 45 degrees with respect to the polarization axis of the polarizer in a direction opposite to the tilting direction of the optical axes of the first quarter-wave plates;
• a transparent resin plate disposed on the plurality of first quarter-wave plates and the plurality of second quarter-wave plates, wherein the transparent display plate is formed of polymethyl methacrylate (PMMA) and has optical isotropy;
• and
• a reinforcement plate formed of polycarbonate disposed between the plurality of second quarter-wave plates and the transparent resin plate,
• wherein the polarization module satisfies
• 0.8(mm)<d<X tan((π−θ)/2) (mm)
• where “X” represents a value that is one half of the pitch of pixels of the display panel mounted to a surface of the polarizer opposite to a surface thereof facing the transparent resin plate;
• “θ” represents the viewing angle of the pixels;
• a light source of the display panel is a point light source;
• “d” represents a distance of the point light source from a surface of the transparent resin plate opposite to a surface of the transparent resin plate facing the polarizer.