LIQUID CRYSTAL DISPLAY DEVICE, MANUFACTURING METHOD THEREFOR, AND DEFECTIVE PIXEL CORRECTION METHOD THEREFOR

摘要

In a TFT substrate, a common signal line is arranged on top a common electrode and below a pixel electrode through intermediation of an insulating film. The metal piece in a pixel having a bright spot is irradiated with laser from the rear surface side of the TFT substrate. The common electrode and the pixel electrode are short-circuited by the melted metal piece.

主权项

1. A liquid crystal display device, comprising:
a TFT substrate; the TFT substrate comprising:
a thin film transistor;a first insulating film formed to cover the thin film transistor;a common electrode formed on top of the first insulating film and supplied with a common potential;a common signal line formed on top of the common electrode;a second insulating film formed to cover the common electrode, the common signal line, and the first insulating film;a pixel electrode formed on top of the second insulating film and having a potential controlled by the thin film transistor; anda metal piece formed in the same layer as a layer in which the common signal line is formed,the metal piece being located in a region that overlaps with, in a cross section of the TFT substrate taken along a thickness direction thereof, at least a part of a region in which the common electrode and the pixel electrode are both present,the metal piece being made of the same metallic material as a metallic material of the common signal line.