Circuit apparatus, manufacturing method thereof and circuit system

A circuit system, comprising:

• a fabric substrate;
• a circuit apparatus, disposed on the fabric substrate, comprising:
• a flexible circuit board, having at least one hollow pattern, wherein the flexible circuit board has an inner region and a peripheral region surrounding the inner region and has a first surface and a second surface opposite to each other;
• a flexible packaging material layer, disposed in the at least one hollow pattern;
• and
• an electronic device, disposed on the first surface of the flexible circuit board and electrically connected to the flexible circuit board;
• and
• a conductive line, disposed on the fabric substrate and electrically connected to the electronic device,
• wherein a position of the electronic device is not overlapped with a position of the hollow pattern.

A manufacturing method of a circuit apparatus, comprising:

• providing a flexible circuit board;
• forming an electronic device on the flexible circuit board;
• forming at least one hollow pattern in the flexible circuit board;
• and
• filling the hollow pattern with a flexible packaging material,
• wherein a position of the electronic device is not overlapped with a position of the hollow pattern.