To provide a substrate for a reflection type liquid crystal display device in which the electrode pattern also acting as a reflector can be protected and on the peripheral part of which circuits can be easily mounted and a method for mounting circuits on the substrate.

The substrate is to be used for a reflection type liquid crystal display device manufactured by disposing a surface side electrode substrate having a transparent electrode pattern formed and a back electrode substrate having an electrode pattern with the electrode pattern facing the transparent electrode pattern through a liquid crystal. The back side electrode substrate has the electrode pattern of a metal film 14 having a reflective face to reflect light and conductivity on a glass substrate 11, and has a protective film 15 which transmits light on the surface of the metal film 14. A comb-like connecting part formed in the periphery of the glass substrate 11 has a protruding part 12' formed on the glass substrate 11 and the metal film 14 and the protective film 15 are formed on the protruding part 12'.