OK, so for most modern monitors drivers are not needed as they use a technology called "plug and Play" or PnP as it may be presented to you in Device manager or display settings. In the old days, every piece of computer hardware as well as peripherals needed to have softare installed on your system to correctly function with it. Nowadays, peripherals like monitors and projectors will have driver information, .inf files, color profiles and EDID information pre-loaded in the flash memory so once it is connected to a PC, these small information files get loaded onto the PC and allow interaction. this also depends on the OS because older operating systems do not have functionality to pull the correct driver files from the device or online from Microsoft or apple.
so, this is what plug and play is in a nutshell, and for most displays right now, you will not need drivers. Unless of course you are using Windows XP or lower operating system.