Accessory device for electronic device and method for manufacturing the same

A method for manufacturing an accessory device that is mountable on an electronic device, the method comprising:

• forming a first plastic substrate comprising a base and at least one side wall protruding from at least a portion of the base in a first direction;
• forming a multilayered film on the first plastic substrate, the multilayered film comprising a transparent or translucent first layer that is formed on the base of the first plastic substrate to reflect at least a portion of incoming light, a second layer disposed on the first layer that is formed at least in part of a polymeric material, and a third layer having a predetermined hardness;
• and
• applying pressure on the multilayered film.

An accessory device that is mountable on an electronic device having a display, the accessory device comprising:

• a translucent plate configured to cover at least a portion of the display of the electronic device when the accessory device is mounted on the electronic device, and comprising a curved peripheral portion and a flat portion that is adjacent to the curved peripheral portion;
• at least one film formed on the plate that faces a side opposite to the display, when the accessory device is mounted on the electronic device;
• and
• a member connected to a portion of the plate that is arranged to be detachably mounted on the electronic device,
• wherein the at least one film transmits at least a portion of incident light from the display while reflecting at least a portion of ambient light that is incident on the film.