Patent ID: 7760281

Claim:
A liquid crystal display device, comprising a display region where pixels including a pixel electrode and a TFT are formed in regions surrounded by video signal lines and scanning lines, and terminal portions formed outside said display region, characterized in that an organic insulating film is formed so as to cover said TFT, and the organic insulating film in said pixel portion has a thickness of 1 μm to 4 μm, said pixel electrode is formed on top of said organic insulating film, and a pixel portion through hole for electrically connecting said pixel electrode and said TFT is created in said organic insulating film, a video signal line or a scanning line extends to said terminal portion outside said display region, and said video signal line or scanning line is covered with said organic insulating film, and a terminal portion through hole is created in said organic insulating film in said terminal portion, said organic insulating film in the periphery of said terminal portion through hole has a thickness of 300 nm to 600 nm, the taper angle of said terminal portion through hole in said organic insulating film is smaller than the taper angle of said pixel portion through hole in said organic insulating film, and the taper angle of said terminal portion through hole in said organic insulating film is 5 degrees to 35 degrees.