Then the answer is very clear, this is a common problem. In fact, under the same resolution, the display precision of OLED screen is obviously behind that of LCD screen, and the principle is directly related to the design difference between them. One is the standard RGB arrangement and pentile arrangement.
As we know, the screen is composed of countless screen pixels, and each pixel is composed of three sub-pixels of red, green and blue, and the resolution is the number of screen pixels. Assuming the same screen size, the higher the resolution, the more pixels on the screen, and the higher the screen pixels per inch, the clearer the screen. The unit to measure the screen definition is ppl, and the calculation formula of ppl is that ppi parameter is the sum of the long square and the wide square of the resolution of the mobile phone, and then divided by the screen size of the mobile phone.
The full name of px is pixel, and the Chinese name is Pixel.
Generally speaking, 300 ppl is enough, 360 PPL is clear and 420 PPL is sharp. However, this formula can only be applied to LCD screens arranged in RGB, but not to OLED screens. Why? This is because of the arrangement of sub-pixels. The traditional LCD screen adopts rgb standard arrangement, and the three sub-pixels of Rgb have the same size and number. For amoled screen, Pentile arrangement appeared with the birth of organic light-emitting diode display materials. The liquid crystal display has always used the traditional RGB arrangement, and the liquid crystal uses the passive light of backlight. The concrete realization form of RGB on the display is optical filter, which is simple to manufacture, and the production of high-density RGB ribbons will not bring about a substantial increase in cost. However, organic light-emitting diodes that actively emit light are different. RGB of organic light emitting diodes corresponds to organic materials emitting red, green and blue. The display we are using now has high resolution, which requires small and high-density integration of each luminescent material, which is technically difficult and costly. So Samsung developed pentile arrangement, which doubled the blue pixels in 1 pixel, increased the area and extended the life. Because the human eye is more sensitive to green, in order to balance the color display effect, the red sub-pixel is also enlarged twice. In this way, there are only two materials on each display unit, and the material area is large, which correspondingly reduces the process difficulty and cost, and it is pentile arrangement. However, the granularity displayed by pentile arrangement is not as fine as that of standard RGB. So Samsung later developed the diamond arrangement. That is, pentile rhombic pixel arrangement. In addition, the blue pixels arranged by Pen tile are arranged in a straight line at an angle of 45 degrees, which is neither horizontal nor vertical. When the pixels per inch of ppl on the screen are not high, the font or picture displaying the horizontal screen number will have obvious sawtooth feeling, so the theoretical ppl of the OLED screen is multiplied by 2/3 under a root sign after the above formula. For the above complaints, to put it simply, the first is to reduce the cost of Oled pixels, and the second is the aging problem of OLED screens. We should know that the aging degree of red, green and blue pixels is different, so we need to adjust the number and size of red, green and blue pixels accordingly to delay the screen burning phenomenon.
This picture comes from 360 Encyclopedia.
However, because Samsung registered patents on pentile array and diamond array, China manufacturers could not use them, so they had to develop them themselves, while China manufacturers developed delta array. And its display fineness is not high.
So the main difference between triangle arrangement and diamond arrangement is the fineness of display, and the fineness of diamond arrangement is higher. When the mobile phone screen and font are displayed, jagged edge or color cast is better than delta. There are also yellow duck arrangement and TCL arrangement.
Although the organic light-emitting diode screen is thin, soft and foldable, and the display effect is quite brilliant, it is equivalent to LCD screen because of pentlai arrangement, PWM and service life, but it is a good choice from a comprehensive point of view.