Liquid crystal display device and semiconductor device

An FFS-mode liquid crystal display device comprising:

• an auxiliary wiring electrically connected to a common electrode in a pixel portion and comprising a region arranged parallel or substantially parallel to a source wiring in a plan view of the pixel portion;
• a top-gate transistor electrically connected to the source wiring;
• a pixel electrode electrically connected to the top-gate transistor comprising a plurality of openings;
• a first organic insulating film below the source wiring;
• and
• a second organic insulating film over the source wiring,
• wherein each of the common electrode and the pixel electrode comprises indium tin oxide or indium zinc oxide, and
• wherein the auxiliary wiring comprises one or more element selected from aluminum, tantalum, titanium, molybdenum, tungsten, neodymium, chromium, nickel, platinum, gold, silver, copper, magnesium, scandium, and cobalt.

An FFS-mode liquid crystal display device comprising:

• an auxiliary wiring electrically connected to a common electrode in a pixel portion and comprising a region arranged parallel or substantially parallel to a source wiring in a plan view of the pixel portion;
• a top-gate transistor electrically connected to the source wiring;
• a pixel electrode electrically connected to the top-gate transistor comprising a plurality of openings;
• a first organic insulating film over a gate electrode of the top-gate transistor and below the source wiring;
• and
• a second organic insulating film over the source wiring and below the pixel electrode,
• wherein each of the common electrode and the pixel electrode comprises indium tin oxide or indium zinc oxide, and
• wherein the auxiliary wiring comprises one or more element selected from aluminum, tantalum, titanium, molybdenum, tungsten, neodymium, chromium, nickel, platinum, gold, silver, copper, magnesium, scandium, and cobalt.

An FFS-mode liquid crystal display device comprising:

• an auxiliary wiring electrically connected to a common electrode in a pixel portion and comprising a region arranged parallel or substantially parallel to a source wiring in a plan view of the pixel portion;
• a top-gate transistor electrically connected to the source wiring;
• a pixel electrode electrically connected to the top-gate transistor comprising a plurality of openings;
• a first organic insulating film over a gate electrode of the top-gate transistor and comprising a region in contact with a lower surface of the source wiring;
• and
• a second organic insulating film over below the pixel electrode and comprising a region in contact with a top surface of the source wiring,
• wherein each of the common electrode and the pixel electrode comprises indium tin oxide or indium zinc oxide, and
• wherein the auxiliary wiring comprises one or more element selected from aluminum, tantalum, titanium, molybdenum, tungsten, neodymium, chromium, nickel, platinum, gold, silver, copper, magnesium, scandium, and cobalt.

An FFS-mode liquid crystal display device comprising:

• a pixel portion comprising:
• a first pixel and a second pixel adjacent to the first pixel in a direction in which a source wiring extends,
• an auxiliary wiring electrically connected to a common electrode in the pixel portion and comprising a region arranged parallel or substantially parallel to the source wiring in a plan view of the pixel portion;
• wherein each of the first pixel and the second pixel comprises:
• a top-gate transistor electrically connected to the source wiring;
• a pixel electrode electrically connected to the top-gate transistor comprising a plurality of openings;
• a first organic insulating film over a gate electrode of the top-gate transistor and below the source wiring;
• and
• a second organic insulating film over the source wiring and below the pixel electrode,
• wherein the common electrode is continuously provided over each of the first pixel and the second pixel, and comprises a region overlapping with the pixel electrode of the first pixel and a region overlapping with the pixel electrode of the second pixel,
• wherein each of the common electrode and the pixel electrode comprises indium tin oxide or indium zinc oxide, and
• wherein the auxiliary wiring comprises one or more element selected from aluminum, tantalum, titanium, molybdenum, tungsten, neodymium, chromium, nickel, platinum, gold, silver, copper, magnesium, scandium, and cobalt.

An FFS-mode liquid crystal display device comprising:

• a pixel portion comprising:
• a first pixel and a second pixel adjacent to the first pixel in a direction in which a source wiring extends,
• an auxiliary wiring electrically connected to a common electrode in the pixel portion and comprising a region arranged parallel or substantially parallel to the source wiring in a plan view of the pixel portion;
• wherein each of the first pixel and the second pixel comprises:
• a top-gate transistor electrically connected to the source wiring;
• a pixel electrode electrically connected to the top-gate transistor comprising a plurality of openings;
• a first organic insulating film over a gate electrode of the top-gate transistor and comprising a region in contact with a bottom surface of the source wiring;
• and
• a second organic insulating film over below the pixel electrode and comprising a region in contact with a top surface of the source wiring,
• wherein the common electrode is continuously provided over each of the first pixel and the second pixel, and comprises a region overlapping with the pixel electrode of the first pixel and a region overlapping with the pixel electrode of the second pixel,
• wherein each of the common electrode and the pixel electrode comprises indium tin oxide or indium zinc oxide, and
• wherein the auxiliary wiring comprises one or more element selected from aluminum, tantalum, titanium, molybdenum, tungsten, neodymium, chromium, nickel, platinum, gold, silver, copper, magnesium, scandium, and cobalt.