Polyester resin, and polyester resin composition for surface-mount-type led reflective plate which comprises same

Disclosed is a polyester resin which comprises a dicarboxylic acid component containing 50 mol% or more of an aromatic dicarboxylic acid and a glycol component containing 15 mol% or more of 4,4'-biphenyldimethanol, and which has a melting point of 280oC or higher. Also disclosed is a polyester resin composition comprising the polyester resin (A), titanium oxide (B), at least one reinforcing material (C) selected from the group consisting of a fibrous reinforcing material and a needle-like reinforcing material, and a non-fibrous or non-needle-like filler (D), wherein titanium oxide (B), the reinforcing material (C) and the non-fibrous or non-needle-like filler (D) are contained in amounts of 0.5 to 100 parts by mass, 0 to 100 parts by mass and 0 to 50 parts by mass, respectively, relative to 100 parts by mass of the polyester resin (A). The polyester resin composition can be used suitably for a reflective plate for a surface-mount-type LED.