Display device and method of manufacturing the same

A method of manufacturing a display device with a display area having a plurality of sub-pixels disposed in the form of matrix, said method comprising the steps of:

• forming a plurality of lower layer wirings on a substrate, said plurality of lower layer wirings transmitting electric signals to said plurality of sub-pixels;
• forming an insulating layer on said plurality of lower layer wirings;
• forming a plurality of upper layer wirings and a short circuit wiring on said insulating layer, the upper layer wirings transmitting electric signals to said plurality of sub-pixels;
• and
• removing said whole short circuit wiring, alternatively removing a part thereof to electrically disconnect said short circuit wiring,
• wherein a short circuit due to dielectric breakdown between said short circuit wiring and said lower layer wirings is more apt to occur than between said upper layer wirings and said lower layer wirings, alternatively between said lower layer wirings.

A display device with a display area constituted of a plurality of sub-pixels disposed in the form of matrix, comprising:

• a substrate;
• a plurality of lower layer wirings sending electric signals to said plurality of sub-pixels, the lower layer wirings being formed on said substrate;
• an insulating layer formed on said plurality of lower layer wirings;
• a plurality of upper layer wirings sending electric signals to said plurality of sub-pixels, the upper layer wirings being formed on said insulating layer;
• and
• a short circuit wiring formed at the outside of said plurality of upper layer wirings and at the outside of said display area, the short circuit wirings being formed on said insulating layer,
• wherein said whole short circuit wiring is removed, alternatively a part thereof is removed after being formed, to be electrically disconnected.

A wiring board, comprising:

• a plurality of lower layer wirings formed on a substrate;
• an insulating layer formed on said lower layer wirings;
• a plurality of upper layer wirings formed on said insulating layer;
• a short circuit wiring repressing a short circuit between said upper layer wirings, alternatively between said lower layer wirings, by short-circuiting with said lower layer wirings via said insulating layer, the short circuit wiring being formed on said insulating layer,
• wherein said short circuit wiring is removed, alternatively a part thereof is removed after being formed, to be electrically disconnected.

A display device with a display area constituted of a plurality of sub-pixels disposed in the form of matrix, comprising:

• a substrate;
• a plurality of lower layer wirings sending electric signals to said plurality of sub-pixels, the lower layer wirings being formed on said substrate;
• an insulating layer formed on said plurality of lower layer wirings;
• a plurality of upper layer wirings sending electric signals to said plurality of sub-pixels, the upper layer wirings being formed on said insulating layer;
• and
• a short circuit wiring formed on said insulating layer,
• wherein said short circuit wiring is short-circuited with said lower layer wirings via said insulating layer, and
• said short circuit wiring is electrically disconnected after being formed.