Vehicle display device comprising first and second viewing angle control panels and a polarization axis rotation element between the first viewing angle control panel and a display panel

A vehicle display device provided in a vehicle, comprising:

• a display panel configured to modulate a first polarization component;
• a first viewing angle control panel comprising a first liquid crystal layer containing twisted liquid crystal molecules;
• a second viewing angle control panel comprising a second liquid crystal layer containing twisted liquid crystal molecules;
• a polarization axis rotation element provided between the first viewing angle control panel and the display panel;
• a first polarizer provided on a front side of the display panel;
• a second polarizer provided between the display panel and the polarization axis rotation element;
• and
• a third polarizer provided between the polarization axis rotation element and the first viewing angle control panel, wherein
• the first viewing angle control panel is provided between the second viewing angle control panel and the polarization axis rotation element,
• a driver seat and a passenger seat are arranged in a first direction,
• an alignment state of the first liquid crystal layer is different from an alignment state of the second liquid crystal layer,
• at least one of a long axis of the liquid crystal molecule located in an intermediate layer of the first liquid crystal layer and a long axis of the liquid crystal molecule located in an intermediate layer of the second liquid crystal layer is aligned in the first direction,
• a second polarization axis of a second polarization component which passed through the first viewing angle control panel is different from a first polarization axis of the first polarization component,
• the polarization axis rotation element is configured to rotate the second polarization axis,
• the second polarizer comprises a second transmission axis which transmits the first polarization component,
• the third polarizer comprises a third transmission axis which transmits the second polarization component, and
• a fast axis or slow axis of the polarization axis rotation element is located in an intermediate direction between a direction of the second transmission axis and a direction of the third transmission axis.