Liquid crystal display devices using a plastic substrate with particular relative thickness

A backlit liquid crystal display device, comprising:

• a first substrate to be illuminated by a light source;
• a second substrate through which an image is to be viewed made of plastic and spaced apart from the first substrate;
• a thin film transistor on an inner surface of the first substrate;
• a passivation layer covering the thin film transistor;
• a pixel electrode and a color filter layer, both on the first substrate, the pixel electrode being disposed on a surface of the passivation layer and connected to the thin film transistor through a contact hole, the color filter layer being located between the first substrate and the pixel electrode;
• a polarizer on an outer surface of the second substrate;
• a black matrix on an inner surface of the second substrate, and corresponding to the thin film transistor;
• a common electrode on the black matrix;
• and
• a liquid crystal layer between the pixel electrode and the common electrode;
• wherein the black matrix is disposed between the second substrate and the common electrode;
• and
• wherein a sum of a thickness of the second substrate and a thickness of the polarizer is substantially equal to a thickness of the first substrate.