- 53 -9-3. Pannel failureFailure ModePartNameDescriptionPhenomenaFailure causeTCPV B/DVertical barBlock Defect :TCP cracking or crackingDim or L/D:TCP Sunken:TCP lead cracking:ACF bonding short:Awful environment andsomething electric enterinto LCD:Mis-align between TCP andPanel:Panel failure:TCP failureV DimVertal gray lineV L/DVertical colorline(light or darkforever)H B/DHorizontal barH DimHorizontal garylineH L/DH o r i z o n t a lline(light or darkforever)