Liquid crystal display device with thick interlayer insulating film under pixel electrode

A transmission type liquid crystal display device comprising:

• gate lines;
• source lines;
• and switching elements each arranged near a crossing of each gate line and each source line, a gate electrode of each switching element being connected to the gate lines a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer, wherein
• an interlayer insulating film formed of a fluoric resin with high transparency is provided above the switching element the gate line, and the source line,
• the pixel electrode formed of a transparent conductive film is provided on the interlayer insulating film, and further comprising a connecting electrode for connecting the pixel electrode and the drain electrode, wherein
• the interlayer insulating film is provided above the switching element, the gate line, the source line, and the connecting electrode,
• the pixel electrode is formed on the interlayer insulating film so as to overlap at least the gate line or the source line at least partially, and
• the connecting electrode and the pixel electrode are connected with each other via a first contact hole formed through the interlayer insulating film,
• wherein a metal nitride layer is formed below the first contact hole to connect the connecting electrode and the pixel electrode.

A transmission type liquid crystal display device comprising:

• gate lines;
• source lines;
• and switching elements each arranged near a crossing of each gate line and each source line;
• an interlayer insulating film formed of a fluoric resin with high transparency provided above the switching element, the gate line, and the source line;
• and
• a pixel electrode formed of a transparent conductive film provided on the interlayer insulating film, a gate electrode of each switching element being connected to the gate line, a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer,
• wherein the transmission type liquid crystal display device further comprises a driving circuit for supplying to the source line a data signal of which polarity is inverted for every horizontal scanning period, and the data signal is supplied to the pixel electrode via the switching element, the data signal having a phase difference with a gate signal.

A transmission type liquid crystal display device comprising:

• gate lines;
• source lines;
• and switching elements each arranged near a crossing of each gate line and each source line, a gate electrode of each switching element being connected to the gate line, a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer, wherein
• a interlayer insulating film formed of a fluoric resin having a light transmittance of 90% or more for light with a wavelength in the range of about 400nm to 800 nm is provided above the switching element, the gate line, and the source line,
• the pixel electrode formed of a transparent conductive film is provided on the interlayer insulating film,
• wherein the interlayer insulating film includes either a fluoric polyimide or a fluoric acrylate resin.

A liquid crystal display device comprising:

• gate lines;
• source lines;
• and switching elements each arranged near a crossing of each gate line and each source line, a gate electrode of each switching element being connected to the gate line, a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer, wherein
• an interlayer insulating film formed of a fluoric resin is provided above the switching element, the gate line, and the source line,
• the pixel electrode formed of a conductive film is provided on the interlayer insulating film, and further comprising a connecting electrode for connecting the pixel electrode and the drain electrode, wherein
• the interlayer insulating film is provided above the switching element, the gate line, the source line, and the connecting electrode,
• the pixel electrode is formed on the interlayer insulating film so as to overlap at least the gate line or the source line at least partially, and
• the connecting electrode and the pixel electrode are connected with each other via a first contact hole formed through the interlayer insulating film,
• wherein a metal nitride layer is formed below the first contact hole to connect the connecting electrode and the pixel electrode.

A liquid crystal display device comprising:

• gate lines;
• source lines;
• and switching elements each arranged near a crossing of each gate line and each source line;
• an interlayer insulating film formed of a fluoric resin provided above the switching element, the gate line, and the source line;
• and
• a pixel electrode formed of a conductive film provided on the interlayer insulating film, a gate electrode of each switching element being connected to the gate line, a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer,
• wherein the liquid crystal display device further comprises a driving circuit for supplying to the source line a data signal of which polarity is inverted for every horizontal scanning period, and the data signal is supplied to the pixel electrode via the switching element, the data signal having a phase difference with a gate signal.