An STN liquid crystal display cell includes a liquid crystal layer sandwiched between a first and second transparent substrate, is outwardly provided with a first and second polarizers, and a monochromatic back light. Twist angle of the liquid crystal layer is 95° to 170° or 200° to 280°; a first angle between alignment direction of liquid crystal molecules contacting the first transparent substrate and polarization direction of the first polarizer and a second angle between an alignment direction of liquid crystal molecules contacting the second transparent substrate and polarization direction of the second polarizer are each larger than 0° and smaller than 90°; and sum of the first and second angles is 90°±7°.