Manufacturing

Tab-Bonding

TAB bonding is a process for attaching LCD glass to printed circuit boards using heat and pressure. To accomplish this, traces on a printed circuit board are covered with an ACF strip (a thermosetting adhesive imbedded with microscopic conductive particles) and aligned with the driver IC’s (called TABs) which are attached to an LCD. A hotbar mounted on a TAB bonding machine then evenly presses on the connection to apply heat with downward force for a specific time period. The amount of heat, pressure, and time required are calculated to allow the TABS to bond to the circuit board, resulting which in a connection which exhibits excellent electrical conductivity as well as excellent mechanical strength.