Interconnection method of liquid crystal driver LSIs byTAB-on-glass and board to glass using anisotropic conductive film andmonosotropic heat seal connectors

摘要

Tape automated bonding (TAB) on glass (TOG) was developed as a wayto package high-resolution LCDs (liquid crystal displays) in massproduction. This technology bonds the tape carrier LC driver LSIsdirectly onto one side of an LCD panel using anisotropic conductivefilm. To the adjacent side of the LCD panel, flexible circuitmonosotropic heat seal connectors (HSCs) are used to interconnect theLSIs to the glass and can be used to interconnect to the PWB (printedwiring board). TOG is the chosen method for attaching TAB to glass, andthe HSCs are widely used for attaching TAB to glass, TAB to PWBs, andglass to rigid PWBs. The HSCs have been successful in drivingmultiplex-addressed multicolor LCDs whose effective viewing area is 8in×8 in and smaller displays in mass production. The large panelrequires 640 terminations to each side of the glass panel and to fourrow and column PWBs for a total of 5120 terminations on a pitch of 0.011in