Abstract: It is an object of the invention to suppress product development costs and reduce in size by reducing the LSI-mounting area as small as possible of a liquid crystal display device attached with two or more LCDs. Transparent pixel electrodes of LCDs 3 and 13 are connected to each other in series via a FPC 9, and the transparent pixel electrodes of the LCDs 3 and 13 are electrically connected to a single LSI 7 of a circuit board portion 8 provided on a soft conductive connecting member. Therefore, the circuit board portion 8 and the FPC 9 can be reduced in size by being bent, thus the LCDs 3 and 13 can be used as display portions of a portable telephone or the like.

Abstract: With the embodiment of the present invention, a liquid crystal display can be produced at a low cost, which employs the COG technology, saves installation space, mounts LSIs, and, after the LSIs are mounted, can visibly check and inspect the mounted state thereof (that is, electrically connected states thereof) and lighting of the image displaying portion.

Abstract: An embodiment of the invention comprises transparent electrodes 2 and an LSI input/output electrical conductive lines 4, directly formed on one substrate 10 of transparent substrates 9 and 10, an LSI 5 is mounted on the substrate 10, and thereon a FPC assembly 14 composed of FPC 8 mounted with electric components 13 and a connector 17 provided on the FPC 8 is attached, whereby a liquid crystal display device in which, after the LSI is mounted, the mounted condition (an electrically connected condition) and lighting of an image display portion can be visually confirmed, is provided. Since the transparent electrical conductive line electrode 2 and the LSI input/output electrical conductive line 4 are covered by the FPC 8, electrolytic corrosion of the transparent electrical conductive line electrode 2 and the LSI input/output electrical conductive line 4 made of ITO, etc.

Abstract: With the embodiment of the present invention, a liquid crystal display can be produced at a low cost, which employs the COG technology, saves installation space, mounts LSIs, and, after the LSIs are mounted, can visibly check and inspect the mounted state thereof (that is, electrically connected states thereof) and lighting of the image displaying portion.