PURPOSE: To dissolve a connection defect or an adhesive strength shortage, etc., due to a temperature and a shortage of pressing force in thermocompression.

CONSTITUTION: A pair of upper/lower substrates 10, 14 are arranged separately and confronted with each other, and they are sealed by seal material while holding a uniform gap by gap materials 15, and a liquid crystal is sealed between them, and a liquid crystal cell is constituted. Then, respective upper polarization plate 11 and lower polarization plate 13 are provided upward/ downward the liquid crystal cell. An anisotropy conductive film diffusing a Ni particle 7 into thermosetting resin 6 is arranged on a connection electrode part of a TAB driver on which a driver LSI 4 is mounted to be stuck temporarily. A compression head 1 in a thermocompression device is constituted so as to stick a silicone rubber forming a land on its tip part, and the thermocompression is performed after alignment between the connection electrode of the TAB 5 and the transparent connection electrode of the liquid crystal cell is performed. A distribution in which a thermocompression part is parallel to the connection electrode, that is, the pressing force is different continuously in the direction of a compression width is arranged.