Patent ID: 8748891

Claim:
A manufacturing process of a liquid crystal display device, comprising: forming a first substrate provided with a pixel part with thin film transistors and a seal portion arranged around said pixel part; forming a second substrate opposed to said first substrate; filling a liquid crystal layer between said first substrate and said second substrate; and adhering said first substrate to said second substrate with a sealant provided for said seal portion, wherein said forming said first substrate comprises: forming a semiconductor layer composing said thin film transistor, forming in said seal portion a semiconductor connection layer made of a same material as said semiconductor layer, and forming an organic interlayer insulating film; wherein said forming said semiconductor layer and said forming said semiconductor connection layer are performed in the same step, and said first substrate comprises at least the organic interlayer insulating film, said seal portion comprises the semiconductor connection layer which made of a same material as the semiconductor layer composing said thin film transistor, and said sealant is placed on a bottom of an opening between a terminal portion and a Gate wiring/Drain wiring conversion portion from where said semiconductor connection layer reveals and is surrounded by a protective insulating film, the organic interlayer insulating film and a transparent conductive film.