Patent ID: 7742141

Claim:
A flat-panel display device comprising: a display panel having a pixel area for matrix imaging; a plurality of driver IC chips mounted in a row on a fringe part of the display panel; extension wirings extended out from wirings within the pixel area and electrically connected to terminals of the driver IC chips; and a marking visible to the naked eye, the marking: being disposed between a first group of the extension wirings connected to a first one of the driver IC chips and a second group of the extension wirings connected to a second one of the driver IC chips, and indicating a boundary between said first group and said second group of the extension wirings; wherein; a region arranged with each of the extension wiring groups is shaped as a trapezoid diverging toward the pixel area; and the marking is a straight line having a width dimension in a range of 0.03 mm to 0.3 mm, the line running vertically to the fringe part of the display panel and substantially through a triangular non-wiring area sandwiched between the extension wiring groups.