The size of LCD screens is calculated based on the length of the diagonal. The screen size is the size in inches and is the amount of diagonal lines. For the screens of IT products, inches are the standard unit for measuring screen size (1 inch = 2.54cm). LCD screens are usually measured by the length of the diagonal. At present, there are 19-inch, 22-inch, 23-inch, 24-inch, 27-inch LCD screens and the like.
Measurement method of conventional LCD screens:
The diagonal measurement LCD screens are derived from the measurements of the first generation CRT TV screens. Because most of the display tubes used at the time had a circular appearance, of course, only the diameter needed to be measured to distinguish the size. However, the rectangle we have shown is drawn with a rectangle inscribed in a circular display, and the diagonal of the rectangle is the diameter of the display tube.
After that, the appearance of the display tube was a rounded rectangle, which inherited this method, so it was convenient to describe the size with only one parameter, which became a unified calculation method in the industry. Due to the irregular size of the long screen, the screen is longer and narrower. The size is different from the normal 16: 9 screen. Various sizes have appeared in the conversion, such as 19.1 / 19.3 / 18.5 / 13.3 inches. Generally, only one Digits, two digits reserved.
LCD screens size is divided into physical size and display size:
Some customers receive the product and sometimes feedback the wrong size. This situation is occasionally encountered. The sending machine is always the size of the newspaper. Only the size of the content is measured at the customer's site. There is an error.
The physical size refers to the actual size of the LCD screens, and the display size is the size of the displayed image, also known as the "viewable size". It is often referred to as the LCD screens size. In order to distinguish between external and internal dimensions.
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