What is the difference between oled and led displays

Sep 19, 2022, 1:51:51 AM

Is OLED an LED display?


OLED and LED are not the same concept. They describe completely different things. The difference between LED screen and OLED screen is not only one letter, but also their imaging technologies.


LED display is a flat panel display, consisting of small LED module panels, used to display text, images, videos and other information.


The oled screen is self luminous, just like an independent color bulb. the led screen relies on the backlight layer for luminescence, and white light can display color only through the colored film; Oled screen has better bending, which can be made into curved screen, while led screen does not support large bending; Oled screen is an organic light-emitting diode screen, and led screen is an ordinary lcd screen. Do you want to know about the car display?

 


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What is the difference between OLED and LED? The difference between LED screen and OLED screen.


Luminous principle


The full name of LED is light-emitting diode. Like the traditional semiconductor industry, LED display screen is a display mode that controls semiconductor light-emitting diodes. It is usually composed of a plurality of red light-emitting diodes, which dominate the display by the light on and off, so as to realize the display screen of text, graphics, images, animation, video, video signals and other information. Its process cost is high. In addition, LEDs can only be applied in the form of point light sources.


OLED emits light by driving the organic film itself with current. OLED is a congenital surface light source technology. The light can be red, green, blue, white and other monochrome, thus achieving the effect of full color. It belongs to a new luminous principle. The reason why plasma technology, OLED technology and even the early CRT technology are praised for their image quality is that they all have the characteristic of "self illumination".

 

led displays


Contrast ratio


The LED screen cannot be controlled for each pixel. When displaying black, it mainly depends on the deflection of the liquid crystal molecules to shield the backlight. Therefore, when the liquid crystal panel displays black images, there will be some light leakage, and the extreme black field cannot be obtained. The OLED technology can turn off independent pixels and return their brightness to zero. In theory, the contrast of OLED technology can be infinite. In terms of actual display effect, video content dominated by dark scenes is the biggest challenge for LED, while OLED can easily cope with it.


Advantages of oled screen


The oled screen can display the P3 color gamut and accurately display the color coverage of the image, with a comparison degree up to 1008:1. Due to the characteristics of the oled screen, it is generally necessary to use PWM lighting and DC lighting to exchange in different brightness. It supports two color modes of 100% DCI-P3 wide domain and 100% sRGB high color gamut. The oled screen has a wider color range, which can produce blue light with lower performance and extreme contrast. Therefore, the screen response time is very fast, It can be lower than 2m/s.


Advantages of led screen


The led panel needs to realize color conversion through liquid crystal deflection. In any case, compression still requires about 3m/s of actual response time. The response time of ordinary led panel is already fast, but it has a different effect from the rapid response speed of oled. It has clear light and color, and high color contrast, making the display more accurate, clear, short response time, and the image more smooth, The pursuit of color has gradually got rid of the pure imitation of natural objects, and is committed to seeking the beauty and strong expression of its unique color.

 

oled


Why are LEDs better than OLEDs?


LED and OLED screens have their own advantages. It is not difficult to make a decision on the choice of hardware. If you are sensitive to light, you don't have very high requirements for pure black color, and the budget is limited, LED screen hardware is more suitable for you, so it is better to start when OLED technology is more mature. If you are not sensitive to light, pursue the fashion and artistic sense of products, have no economic pressure, and want to try new high-tech, OLED screen hardware can meet your needs.

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