The present invention discloses a display device having a gate line and a
data line crossing each other on a substrate to define a pixel region, a
thin film transistor at each crossing of the gate line and data line, a
pixel electrode about a circumference of the pixel region and having an
opening at a central portion of the pixel region, the pixel electrode
electrically connected to the thin film transistor, a piezoelectric lead
lanthanum zirconate titanates (PLZT) layer in the opening of the pixel
region, and a piezoelectric lead zirconate titanates (PZT) layer between
the pixel electrode and the PLZT layer.