Display device and inspection method of position gap
The present invention can easily inspect the connection between a flexible printed circuit board and terminals. In a display device which includes a display panel which forms a plurality of lines as first lines on a terminal portion thereof, and a film-like substrate which forms a plurality of lines as second lines thereon, the display panel has a determination terminal which is arranged close to the terminal portion, has a width larger than a width of the terminal, and has a portion thereof removed, the film-like substrate forms third lines and fourth lines arranged close to the second lines thereon, the third lines face the determination terminal, and the fourth lines face the removed portion of the determination terminal from which the portion is removed.
1. A display device comprising:
a display panel which forms a plurality of lines as first lines on a terminal portion thereof; and
a film-like substrate which forms a plurality of lines as second lines thereon, wherein
the display panel has a determination terminal which is arranged close to the terminal portion, has a width larger than a width of the second line, and has a removed portion where a part of the terminal portion is removed,
the film-like substrate forms third lines and fourth lines arranged close to the second lines thereon,
a width of the fourth line is wider at the end portion than other area,
the determination terminal has a form of non-continuous ring-like shape enclosing the removed portion,
the third lines face the determination terminal in an opposed manner, and
the fourth lines face the removed portion of the determination terminal from which the portion is removed.
2. A display device according to claim 1 , wherein when the fourth line is displaced exceeding the removed portion of the determination terminal, the third line and the fourth line assume the same potential thus detecting a position gap.
3. A display device according to claim 1 , wherein a removed shape of the determination terminal is configured to be capable of determining respective position gaps in both directions along which the plurality of first lines are arranged in parallel and in both directions which are perpendicular to the elongated direction of the first line.
4. A display device according to claim 1 , wherein the third lines and the fourth lines are electrically connected with lines formed on a printed circuit board.
5. A display device according to claim 2 , wherein a removed shape of the determination terminal is configured to be capable of determining respective position gaps in both directions along which the plurality of first lines are arranged in parallel and in both directions which is perpendicular to the elongated direction of the first line.
6. A display device according to claim 2 , wherein the third lines and the fourth lines are electrically connected with lines formed on a printed circuit board.
7. A display device according to claim 3 , wherein the third lines and the fourth lines are electrically connected with lines formed on a printed circuit board.
8. A display device according to claim 5 , wherein the third lines and the fourth lines are electrically connected with lines formed on a printed circuit board.