Coloured timepiece component

Abstract

The timepiece component, in particular an external timepiece component, in particular a dial, has a body, one surface of which is at least partially covered by a coating forming an optical colouring device, the coating including a stack of the following successive layers on the surface:—a first layer made of at least one metal material; —a second layer of semiconductor material; —a third layer made of at least one metal material; —optionally repetition of the second and third layers; —one or more oxide layers; —optionally an upper finishing layer such as an acrylic and/or nitrocellulose finishing layer, in particular a layer of zapon; —optionally, one or more layers of a metal material, in particular chromium, or titanium, inserted between two of the layers of the coating defined above, such a layer promoting adhesion and/or partial absorption of light.

Dependencies are inferred from the claim text.