Accessory and controlling method of electronic assembly

摘要

An accessory (200) suitable for an electronic device (100) is provided. The electronic device (100) has a display area (102). The accessory includes a coupling portion (210) and a cover portion (220). The coupling portion (210) is suitable to be coupled to the electronic device (100). The cover portion (220) is connected to the coupling portion and is suitable for covering the display area of the electronic device. The cover portion (220) has a plurality of light-transmitting areas (220a), and the light-transmitting areas (220a) are arranged on the display area in an array. An image generated by the display area is projected out of the cover portion through the light-transmitting areas (220a). Moreover, an electronic assembly (50) containing the electronic device (100) and the accessory (200) is also provided. Furthermore, a controlling method is also provided for controlling the electronic assembly (50).