Patent ID: 8279617

Claim:
A pad layout structure of a driver IC chip mounted on a liquid crystal display (LCD) panel in a chip-on-film (COF) scheme for supplying uniform power to the driver IC chip, the pad layout structure comprising: first main power pads configured to supply a first power supply voltage VDD1 to the driver IC chip; second main power pads configured to supply a second power supply voltage VDD2 to the driver IC chip; first main ground pads configured to supply a first ground voltage VSS1 to the driver IC chip; second main ground pads configured to supply a second ground voltage VSS2 to the driver IC chip; first dummy power pads connected to the first main power pads by metal lines, the first main power pads supplying the first power supply voltage VDD1 to the first dummy power pads; second dummy power pads connected to the second main power pads by metal lines, the second main power pads supplying the second power supply voltage VDD2 to the second dummy power pads; first dummy ground pads connected to the first main ground pads by metal lines, the first main ground pads supplying the first ground voltage VSS1 to the first dummy ground pads; and second dummy ground pads connected to the second main ground pads by metal lines, the second main ground pads supplying the second ground voltage VSS2 to the second dummy ground pads.