Flat-panel display devices including markings and manufacturing method therefor

1. 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.

2. A flat-panel display device according to claim 1 , wherein the marking is formed in a process manufacturing substrate forming the display panel, simultaneously with the signal lines, the scanning lines, or other opaque patterns.

3. A flat-panel display device according to claim 1 , wherein the marking runs across an area sandwiched between the driver IC chips.

4. A flat-panel display device according to claim 1 , wherein

said region arranged with the extension wiring group makes a non-isosceles trapezoid due to unequal intervals of the driver IC chips; and

extent of such inequality in oblique-side lengths of the non-isosceles trapezoids consecutively deviates from adjacent one, bit by bit.