A new publicly funded multi-billion euro fund is being created to boost investment in Europe's tech sector, to allow it to compete with US and Asian rivals, France's finance minister said on Monday.

Bruno Le Maire said home-grown European tech start-ups needed far higher levels of financing if Europe is to reduce its dependence on foreign tech giants.

He added that he would give details of the new fund of funds on Tuesday with his German counterpart Christian Lindner, but said it would feed 10 to 20 funds "at a minimum value of one billion euros to finance tech champions".

"Our ultimate target is to have 10 technology companies worth more than 100 billion euros each by 2030," Le Maire said as he opened a conference on digitial sovereignty.

Europe's venture capital funds are often too small to be able to finance the development of European tech start-ups, leaving them few choices other than turning to much bigger US funds.

Meanwhile, many US and Chinese tech firms have benefitted from public funding at some stage in their development, something which has been more complicated in the past for European firms due to the EU's strict state aid rules.