The display size of general home computer is 19-24 inches. The most commonly used are 22 or 21.5 inch monitors.
Introduction to LCD size selection:
1. Too big or too small is not good;
2. Look at the width of your table;
3. At the same resolution, large screen is preferred;

Summary:
Within the range that the human eye can bear, it is clear that the larger the size of the LCD screen, the broader the field of vision. But in combination with the resolution and the distance between the desktop, the most people choose a 22 or 21.5 inch display in the normal desktop width environment (about 70 cm).