0523 GMT August 24, 2019
The 2015 and 2016 champion is aiming for a third continental title in a row, a feat only achieved once before by Argentina in successive years from 1945-47, AFP reported.
"We want to leave our legacy as triple champions, that's our dream," said the Barcelona midfielder, an integral part of Chile's only two previous Copa successes.
"That's why we want to play our best match of the Copa against Peru. It would be something historic for us to get to the final and that's our aim."
Chile faced Peru in the 2015 semifinals on home soil when it won 2-1 before beating Argentina on penalties in the final for its first ever continental success.
"We need to play the perfect match, to win it with authority," added Vidal.
"Peru has great teamwork, they play well, very similar to Colombia" which Chile beat on penalties in the quarterfinal.
"That's why it will be a very difficult match and fantastic to play in it."
Vidal pointed to Peru captain and striker Paolo Guerrero as the biggest threat Chile will face on Wednesday.
Guerrero and Chile's Eduardo Vargas, with 12 goals each, are the top two still active scorers in Copa history.
"He's a player who knows how to play against four defenders and it always takes a lot out of us to mark him," said Vidal.
Vargas, who scored twice in Chile's opening 4-0 thrashing of Japan, may never have had the chance to add to his Copa ledger, but for a change of heart by Chile's Colombian coach Reinaldo Rueda.
Vargas, known as "Turboman" for his incredible engine, fell out of favor with Rueda for disciplinary reasons following a friendly with Sweden in 2018.
He spent almost 18 months overlooked by the Colombian before being recalled for the Copa America following 17 goals in 49 matches for his Mexican club side Tigres last season.
It was a good move as Vargas has been electric in the tournament alongside a rejuvenated Alexis Sanchez – who's looked his old self after 18 months of misery at Manchester United – and Jose Fuenzalida in a three-pronged attack.