The higher the PPI of the mobile phone screen, the better - 上海419贵族宝贝-上海后花园1314-上海品茶网-阿拉爱上海

PPI (pixels per inch) is the unit of image resolution, which represents the number of pixels per inch. Therefore, the higher the PPI value, the higher the density of the display screen. Of course, the higher the display density, the higher the fidelity. So now mobile phone manufacturers will also mobile screen PPI is a selling point of mobile phone promotion. But the higher the PPI of the phone screen, the higher the PPI of the phone screen Display effect Is it better? This is not the case.

stay On, someone asked a question, "Why does the iPhone 5 screen look clearer and clearer than the Samsung Galaxy S4 (hereinafter referred to as Samsung GS4) with 441 PPI when it has only 326 PPI?" Netizens responded enthusiastically. It was relatively uniform that the higher the PPI of the mobile phone screen, the better. Three of them answered in detail.

A netizen named Chi Huo thinks that The display effect of mobile phone screen can not only depend on the PPI value, but also on whether the color gamut is wide and whether the color is accurate. He said he hadn't seen it Samsung GS4 However, although the screens arranged by the Pentile of Samsung GS4 are not obvious due to the improvement of resolution, they still have some impact on the screen.

Ordinary screens are arranged in the order of [red green blue] [red green blue] [red green blue] [red green blue], while the secondary pixels of the screen in row P are arranged in the order of [red green] [blue green] [red green] [blue green], which results in the screen turning green. It seems that the PPI is very high, but actually it needs to be discounted (because there are only two colors for a group of pixels on the P-row screen...)

Samsung Galaxy S3 screen

Previous generation Galaxy S3 Compared with the image of S4 below, we can see that the color deviation of S4 is smaller, but this image clearly shows that the color is green... Samsung's use of this arrangement is mainly due to OLED screen The manufacturing cost and sub-pixel aging are uneven. Also, people's eyes are relatively sensitive to green, and they look flattering.

Fan, a graduate student of optical engineering who studied in three places in China, Taiwan and the United States, and a netizen focusing on display technology research, also agreed that the quality of mobile phone screens is not only determined by PPI. The display lattice diagram of iPhone 4S, Samsung GS4 and some popular models is also added.

A netizen named Cai Liang analyzed that the higher the PPI, the better.

1、 The screen resolution of the iPhone has reached the so-called retinal standard, which means that the resolution of 326 and 441 is basically the same without a magnifying glass , especially when viewed from the normal mobile phone use distance, the naked eye cannot tell which PPI is higher, because it has exceeded the naked eye resolving power On the contrary, other factors have more influence on your sensory effects.

2、 PPI only affects clarity Samsung's P arrangement has always been criticized, which will lead to the same PPI image text not sharp 。

3、 Screen material problem 。 Apple is a wide-angle (IPS) TFT material screen, the highest brightness is much higher than Samsung's AMOLED, and the color is lighter but more realistic. Samsung Super AMOLED The color of the screen is bright, but the brightness is poor, and the image is not so bright. In addition, LED screens save power and have low power consumption, which is the future development direction. However, in terms of visual effects, at least on mobile phones, it is still not better than traditional TFT materials. Of course, this visual effect is also related to personal preferences.

In the market, there are many phones with higher screen PPI than Apple's, but in fact, the effect does not exceed the iPhone's personal feeling, mainly because the highest brightness is not good. In contrast, the screen does not look so bright and the contrast is not so high. Some netizens think that the display effect of the screen also depends on the Backlight The low PPI display effect of iPhone is better than the high PPI display effect of Galaxy S4 IPhone screen has better backlight effect 。

Learn more about new cool devices, stay tuned