For this matter, the PCB TAB refers to the welded part on the PCB (Printed Circuit Board, printed circuit board), which is usually connected to the PCB by some miniaturized \"pins\" or metal pieces (called TAB).
In electronic component manufacturing, TAB is often used to connect LCD (Liquid Crystal Display) and other electronic components.
The TAB also provides a high density connection, while also having high reliability and good mechanical properties.
TAB (Tape automatic combination) is a multi-pin large-scale integrated circuit (IC) Chip (Chip), no longer the traditional package into a complete individual, and use the TAB carrier, the unsealed chip is directly glued to the board surface.