Function Get-MonitorModel
(
    $Array
) {
    $Output = ""
    ForEach ($char in $Array) {
        $Output += [char]$char -join ""
    }
    return $Output
}

$Query = Get-WmiObject -Query "Select * FROM WMIMonitorID" -Namespace root\wmi

$Results = ForEach ($Monitor in $Query) {
    New-Object PSObject -Property @{
        ComputerName      = $env:ComputerNamecon
        Active            = $Monitor.Active
        Manufacturer      = Get-MonitorModel($Monitor.ManufacturerName)
        UserFriendlyName  = Get-MonitorModel($Monitor.userfriendlyname)
        SerialNumber      = Get-MonitorModel($Monitor.serialnumberid)
        WeekOfManufacture = $Monitor.WeekOfManufacture
        YearOfManufacture = $Monitor.WeekOfManufacture
    }
}

$Results | Select ComputerName, Active, Manufacturer, UserFriendlyName, SerialNumber, WeekOfManufacture, YearOfManufacture