To provide a retardation plate integrated polarizing plate which has excellent uniformity, exhibits bixial orientability as a whole, and can be set in the optical characteristics of biaxial orientation over a wide range, a method for manufacturing the same, and a liquid crystal display device by combining the same with a liquid crystal cell. A coating layer 4 having refractive index anisotropy isfirst formed on a release film 6. The retardation plate integrated polarizing plate 10 is manufactured by a process of laminating the coating layer 4 on a polarizer 1 or a transparent resin film 3 oriented within the plane and a process of laminating the polarizer 1 and the transparent resin film 3 or the coating layer 4. The transparent resin film 3 and the coating layer 4 yield the retardation plate 2. The retardation plate value (R<0>) within the plane thereof is >=20 nm and the retardation value (R') in the thickness direction thereof is greater than 40 mm. The retardation plate integratedpolarizing plate is made into the liquid crystal display device by being combined with the liquid crystal cell.