See-through window display and liquid crystal display

A see-through window display comprising:

• a display panel having a plurality of pixels;
• and
• a drive circuit configured to apply a voltage according to input gray scale data to the plurality of pixels,
• wherein the display panel includes:
• a first substrate having a pixel electrode,
• a second substrate,
• a liquid crystal layer interposed between the first substrate and the second substrate,
• a first polarizer provided on the first substrate, the first polarizer having a first polarization axis, and
• a second polarizer provided on the second substrate, the second polarizer having a second polarization axis,
• when a transmittance of each of the plurality of pixels, when the drive circuit applies a minimum voltage to the plurality of pixels, is set to TW, and when a transmittance of each of the plurality of pixels, when the drive circuit applies a maximum voltage to the plurality of pixels, is set to TB, the display panel has a normally white characteristic satisfying a relationship of TW>TB,
• the normally white characteristic of the display panel has a structure in which, when:
• a first axis that is parallel to an axis created by rotating the first polarization axis 45 degrees clockwise is set to an a-axis,
• a second axis that is parallel to an axis created by rotating the first polarization axis 45 degrees counterclockwise is set to a b-axis,
• an a-axis component of a refractive index of the liquid crystal layer is set to ‘na’ and a b-axis component of a refractive index of the liquid crystal layer is set to ‘nb’,
• a value indicating anisotropy of the refractive index of the liquid crystal layer being a difference between a refractive index of the a-axis component and a refractive index of the b-axis component is set to Δn=|na−nb|,
• a thickness of the liquid crystal layer is set to d, and
• a phase difference of the liquid crystal layer is set to dΔn,
• a value of dΔn when the voltage applied to the plurality of pixels by the drive circuit is lower than or equal to a threshold voltage indicating a boundary of alignment change of liquid crystal molecules of the liquid crystal layer is smaller than or equal to 50 nm.