Active type liquid crystal matrix display having signal electrodes with expanded sections at group exposure boundaries

Claim 1

A liquid crystal matrix display panel comprising: a first substrate; TFT transistors formed on said first substrate; said TFT transistors being arranged in a matrix, each TFT transistor including a source electrode, a gate electrode and a drain electrode; picture element electrodes formed on said first substrate, said picture element electrodes being arranged in a matrix, each picture element electrode being connected to a corresponding one of said drain electrodes; gate electrode bus-bars formed on said first substrate for electrically interconnecting said gate electrodes of said TFT transistors aligned in one direction of said matrix; source electrode bus-bars formed on said first substrate for electrically interconnecting said source electrodes of said TFT transistors aligned in the other direction of said matrix; said TFT transistors, said gate electrode bus-bars, and said source electrode bus-bars being divided into a plurality of groups formed on said first substrate by a group photolithography exposure method, each group being a sub-matrix of said matrix; said gate electrode bus-bars and said source electrode bus-bars having wider sections at boundaries of said groups, said boundaries being located between respective transistors of adjacent groups to form an electrical connection between like bus-bars of adjacent groups, each wider section having a portion which overlaps a portion of an adjacent wider section to form said electrical connection between like bus-bars of adjacent groups; a second substrate; and a liquid crystal composition disposed between said first and second substrates.