Patent ID: 9307638
Filing Date: 2016-04-05
CPC Classification: H05K,Y10T

Claim Text:
1. A flexible metal laminate, including a polymer resin layer including a polyimide resin including a repeating unit represented by the following Chemical Formula 1, a dispersing agent dispersed in the polymer resin layer, and a fluororesin, wherein the fluororesin is more distributed through the inside of the polymer resin layer than at both surfaces of the polymer resin layer: wherein, in Chemical Formula 1, Y the dispersing agent includes one or more polymers selected from the group consisting of a polyester-based polymer, a polyether modified polydimethylsiloxane, and a polyester/polyamine polymer, the polymer resin layer has a dielectric constant of 2.2 to 2.8 at 5 GHz, wherein the content of the fluororesin per unit volume of the polymer resin layer increases with the depth until 20% of the total thickness from both surfaces of the polymer resin layer, and the flexible metal laminate has a coefficient of thermal expansion of 1 ppm to 28 ppm at 100° C. to 200° C.