Hanging rack type screen protector

A hanging rack type screen protector, configured to protect a display screen of an electronic device and prevent others from peeking at images, pictures, or content presented on the display screen, the screen protector comprising:

• a functional film body, having a plurality of optical gratings configured to define a viewing area, so as to limit passing light to a range of allowable visual angles, the functional film body comprising a first left combining portion formed in an upper left region and a first right combining portion formed in an upper right region;
• a left hanging rack component, having an appearance structure which is approximately L-shaped from the side and formed by a left hanging rack portion and a second left combining portion, the second left combining portion of the left hanging rack component being correspondingly assembled on the first left combining portion of the functional film body;
• and
• a right hanging rack component, having an appearance structure which is approximately L-shaped from the side and formed by a right hanging rack portion and a second right combining portion, the second right combining portion of the right hanging rack component being correspondingly assembled on the first right combining portion of the functional film body;
• wherein the functional film body is freely hung on or freely detached or removed from the electronic device by the left hanging rack component and the right hanging rack component.