Liquid crystal display device and method for manufacturing the same

A liquid crystal display device, comprising a first substrate, a second substrate, and a liquid crystal layer sandwiched between the first substrate and the second substrate,

• the first substrate comprising:
• a plurality of identical pixels arranged in a matrix, an insulator wall structure between each pixel in a row of pixels, with the insulator wall structures formed along a plurality of signal wiring lines;
• a single source electrode in a first pixel, with the source electrode comprising a planar portion that is electrically connected via a thin film transistor to a respective signal wiring line, and two wall electrodes formed continuously with the planar portion, found on the respective insulator wall structure on either side of the pixel unit;
• a neighboring second pixel sharing an insulator wall structure with the first pixel includes another wall electrode on its respective side of the bordering insulator wall structure, and the wall electrodes of the first and second pixels formed on either side of the bordering insulator wall structure are electrically isolated from each other via a slit on the top of the bordering insulator wall structure;
• wherein a length of the slit along the signal wiring line is shorter than a length of the insulator wall structure along the signal wiring line,
• wherein the planar portion has an opening of a width W1 perpendicular to the signal wiring line and a length L1 along the signal wiring line between the insulator wall structures,
• wherein a first common electrode of a planar shape is formed between the insulator wall structures, partially overlapping with the planar portion of the source electrode via a first insulating layer in a plan view, and a retentive capacitance is formed between the source electrode and the first common electrode,
• wherein a second common electrode is formed between the insulator wall structures on a different layer from the planar portion of the source electrode via a second insulating layer,
• wherein a signal voltage is applied to the source electrode so as to form a planar field between the second common electrode to drive liquid crystals, and
• wherein the insulator wall structure contacts the second substrate.