Patent ID: 7947328

Claim:
A metal pattern forming method of forming a metal pattern on a substrate, the metal pattern forming method comprising the steps of: applying one of a metal salt solution and an acetylene compound solution onto the substrate, the acetylene compound solution containing an acetylene compound expressed by a general formula of: (R.(C≡C) l ) k -(L)-(A) m , where R is one of a metal element, hydrogen, a carboxyl group or salt thereof, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, an aralkyl group and a heterocyclic group, L is one of a compound linking A with a carbon-carbon triple bond and a group having (k+m) valency, A is one of a polyoxyether group, a polyaminoether group and polythioether group, k and l are integers not less than 1, and m is an integer not less than 0; and after the step of applying the one of the metal salt solution and the acetylene compound solution, applying the other of the metal salt solution and the acetylene compound solution onto the substrate so that the metal salt solution reacts with the acetylene compound solution to form a metal precipitate on the substrate, wherein at least one of the applying steps is performed by using an inkjet apparatus to directly form the metal pattern composed of the metal precipitate on the substrate.