Flat display device with light shielding layer

A flat display device in which a semi-transparent non-display area is processed to be non-transparent for preventing a display area from being reduced and fabricating a thinner flat display device is disclosed. The flat display device includes a first substrate having a display area with a pixel matrix formed therein and a non-display area with a driving circuit for driving the pixel matrix formed therein, a second substrate bonded to the first substrate with sealant, and a light shielding layer formed on the second substrate for making the non-display area non-transparent.