Electronic device and manufacturing method thereof

A method for manufacturing an electronic device, comprising:

• disposing separately a first device and a second device on a substrate, wherein the second device generates an electromagnetic interference;
• disposing independently a shielding wall between the first device and the second device, wherein the shielding wall is configured for shielding the electromagnetic interference;
• determining a first distance between the first device and the shielding wall and a second distance between the second device and the shielding wall;
• obtaining an equivalent height of the shielding wall according to the first distance, the second distance, and a value of the electromagnetic interference from the second device to the first device, wherein the equivalent height of the shielding wall is inversely proportional to a distance of the first distance plus the second distance, and proportional to the value of electromagnetic interference from the second device to the first device;
• and
• determining whether the equivalent height of the electronic device is larger than a threshold height;
• and
• extending an end of the shielding wall horizontally toward the first device to form an extension part above the first device when the equivalent height is larger than the threshold height, wherein a sum of a length of the extension part and the threshold height is substantially equal to the equivalent height.