Tft lcd display vs ips display.How to choose the mobile phone screen? Mobile phone screens all look the same, why is there such a big gap between them?

In fact, the root of the blame, we can grasp two points: LCD screen and OLED screen, the rest are branches.

Having talked so much, the director would like to tell you the advantages and disadvantages of these two kinds of screens first, give you a purchase guide, and put some of the strengths of the technical principles at the end.

1.OLED screen (as opposed to LCD screen).

Advantages: display bright and full color, wide color gamut, pleasing effect, light and thin, low power consumption, quick response, good flexibility (the emergence of a flexible screen in the future), support for off-screen fingerprints (self-luminous characteristics).

Disadvantages: relatively short life (burning screen), the lower the brightness, the more serious the flashing, the color edge aliasing problem.

2.LCD screen (as opposed to OLED screen).

Advantages: low cost, natural and clear picture effect, relatively protect eyes (low strobe, but short wave blue light is not good).

Disadvantages: the display effect is not as good as OLED, the shadow phenomenon exists, it is thicker and more transparent.

As you can see, it is open to question whether the two are good or bad, but why do so many people think that OLED is a good choice for the screen? The director feels that it is because the advantages of OLED are really outstanding, not only consumers but also manufacturers, but many of its shortcomings are also very fatal, but they are easy to be ignored.

And the LCD screen appears to be much milder, the advantages are not bright, the disadvantages are not fatal.

In depth, whether it is a LCD screen or an OLED screen, the picture is composed of one pixel after another, and a pixel is composed of three sub-pixels (RGB), forming different colors through different brightness.

In RGB, R stands for red (Rad) G represents green (Green) and B blue (Blue). Any combination of these three colors can constitute all the colors we see every day.

In fact, a liquid crystal layer is sandwiched between two pieces of “glass”, a thin film transistor is placed on the lower substrate, and a color filter layer is placed on the upper substrate, and the liquid crystal layer in the middle will produce different light characteristics under the action of voltage. finally, the projection passes through the color filter layer to produce different colors.

Because the light source is fixed, and can not achieve separate light, if you want to display black, the liquid crystal can not completely block the light source, the vision will appear white, so you can not turn off the screen display.

There is a very thin layer of organic material, and when the current passes through, these light-emitting diodes can emit light individually.

It is also because OLED needs each pixel to emit its own light, while different color pixels have different luminous lives due to different materials, among which blue pixels have the shortest lifetime. This also explains why we often hear of problems such as burning screen and red screen on phones using OLED.

Manufacturers also have their own countermeasures, come up with a variety of pixel arrangement to weaken this problem, the common OLED pixel arrangement is generally Pentile arrangement (referred to as P row), diamond arrangement, although the style is different, but they all have only two pixels, need to rely on nearby pixels to normal imaging.