Try this:
csv_name = urllib.urlencode({'filename':'"results.csv"'}) #this is if you really really want the double quotes, otherwise just use cvs_name = 'results.csv'response = HttpResponse(csv_content, mimetype='text/csv')response['Content-Disposition'] = 'attachment; '+ csv_name +'.csv'response['Content-Type'] = 'text/csv; charset=utf-8';return response
Also, the urlencode is useful in case you have spaces, pluses, minuses in the file name. Otherwise IE will not work.