Frameless auto-dimming rear view mirror and its production method

A frameless auto-dimming rear view mirror, wherein:

• the frameless auto-dimming rear view mirror comprises an absorptive-type polarizing layer, a liquid crystal dimming layer and a reflective-type polarizing layer arranged in sequence from the side of the observer, and the liquid crystal dimming layer comprises a first transparent substrate, a first transparent electrode, a first alignment layer, a liquid crystal layer, a second alignment layer, a second transparent electrode and a second transparent substrate arranged in sequence, and the first transparent substrate is adjacent to the absorptive-type polarizing layer, and a position of the first transparent substrate corresponds to a position of the second transparent substrate, and the first transparent substrate is provided with a step which is beyond the position of the second transparent substrate at its edge, and the frameless auto-dimming rear view mirror also comprises an electrode connecting line electrically connected with the first transparent electrode and the second transparent electrode respectively, and the electrode connecting line is located at the step and fixed on the side of the first transparent substrate facing the second transparent substrate, wherein,
• the electrode connecting line is FPC board;
• and
• the FPC board comprises an inner area and an outer area connected to the inner area, and the inner area comprises a connecting finger area and a PAD area, and the connecting finger area comprises a first connecting finger area and a second connecting finger area, and the first connecting finger area is electrically connected to the first transparent electrode, and the second connecting finger area is electrically connected to the second transparent electrode, and the PAD area comprises a first PAD area and a second PAD area, and the first PAD area is electrically connected to the first connecting finger area, and the second PAD area is electrically connected to the second connecting finger area.