It looks like you have in fact two display issues the vertical line along the edge and the cross-hatch across the full display. Both of these issues is related to the display assembly. The first is what we call a TAB error which is when the glass LCD panel and the ribbon cable is bonded to it to carry the signals from the T-CON board to the LCD panel.
[image|2563515]
The second issue is a likely a noise issue within the T-CON
Given the age of your system I would see if Apple will cover it under an extended warranty as long as you hadn’t created the issue (something heavy sat on the system and/or liquid spill). Otherwise its an expensive repair as the full display would need to be replaced [product|IF188-159] and here’s the guide [guide|142554]