REFLECTION TYPE LIQUID CRYSTAL DISPLAY DEVICE

摘要

PURPOSE:To minimize the lowering of display quality and to reduce leakage electric field from a wiring electrode by setting the dielectric constant of a 1st insulating layer which separates a drain electrode from a 1st picture element electrode so that it may be smaller than that of a 2nd insulating layer which separates the 1st picture element electrode from a 2nd picture element electrode. CONSTITUTION:A TFT 2 is formed on an insulating substrate 1 and the 1st picture element electrode 6 is connected to the drain electrode 4. The 2nd picture element electrode 8 which is a reflection electrode is connected to the 1st picture element electrode 6 through the 2nd insulating layer 7. At such a time, the dielectric constant of the 1st insulating layer 5 is set to be smaller than that of the 2nd insulating layer 7. Since the dielectric constant of the 1st insulating layer 5 is smaller than that of the 2nd insulating layer 7, an effect which signal voltage inputted in a signal wiring has on the voltage on a display picture element is reduced. Thus, the leakage electric field caused by the signal wiring electrode on the surface of the picture element is reduced and the display quality is improved.