December 06, 2023

what is AMOLD screen, OLED screen, LCD screen?


LCD is the acronym for Liquid Crystal Display, which is currently the most mature liquid crystal display technology, so currently many low-end cell phone screens are LCD screens.

The light-emitting principle of LCD mainly relies on the light bulb or LED bulb covering the backlight layer to emit white light, which is then projected through the red, green and blue color film layer to display a variety of colors. But that's the only way,Round LCD the color ratio can't be controlled. The liquid crystal layer is added between the backlight layer and the color layer. The main role of the liquid crystal layer is to use the electric field to change the direction of light to control the rotation of the liquid crystal branch. This way different electric fields will form different colors with different ratios. This is the technical principle of liquid crystal (LCD), which is passive light emitting.


Organic light-emitting diode is the abbreviation of organic electron-emitting display, Chinese is organic light-emitting semiconductor. Simply put,UNB video wall the semiconductor is driven by an electric field to realize the phenomenon of light-emitting. Organic light-emitting diode is the main structure of the organic light-emitting layer and glass substrate.

OLED light-emitting principle: A layer of organic light-emitting material tens of nanometers thick is made on the glass substrate as the light-emitting layer,Industrial LCD and the light is emitted under the effect of electrode injection. In particular, the electrode injected electrons and holes in the light-emitting layer combined to form a pair of electrons and holes on the bound energy level, i.e., excitons, which are excited by radiation extinction to emit photons and produce visible light. OLED structure and light-emitting principle is too complex, may not be able to understand the non-professional, just need to know that the OLED and liquid crystal (LCD) display mode is completely different, it does not require backlighting, the use of a very thin organic coating and glass substrate, these organic materials emit light when the current through them. This is the technical principle of OLED, OLED is active light-emitting. It is much thinner than liquid crystal display (LCD), so it has outstanding advantages in folding, bending, energy consumption, etc. However, it is not yet possible to realize the mass production of large-scale screen, and it is mainly used in portable products such as cell phones.


Amold is the acronym for AMOLED, which has wider viewing angle, higher refresh rate and thinner size.

What is the difference between the three?

Organic light-emitting diodes are made of plastic, which is flexible and can be made into curved screens, while LCDs are made of glass and can only be made into straight screens.

AMOLED display development has the advantages of self-illumination, high contrast, wide viewing angle, but there are many disadvantages, screen burning and strobe most a famous. Among them, the burning screen with the information technology continues to progress, now we have begun to become can be less with outstanding, a year to own no burning screen problem. But stroboscopic can not tolerate, the night to carry out the brightness level is slightly lower, look at NEX S slightly longer, the eyes feel dry, but look at the use of LCD screen does not have this social problem.

AMOLED belongs to OLED, but not the other way around. Simply put, OLED technology includes PMOLED and AMOLED. PMOLED does not need a TFT backplane (unlike LCD backplanes), but can not be made very large; AMOLED can be made very large. PMOLED was mainly used in the early days of small-screen dual-screen cell phones, and AMOLED technology is used in the current mobile TV.

Organic Light Emitting Diode (OLED) is a type of organic light-emitting diode whose light-emitting material is organic light-emitting material, which is relative to LED light-emitting diode. As long as the correct voltage is applied to the positive and negative electrodes, the organic light-emitting diode will emit light, just like a light bulb. Add a signal to it and it works.

AMOLED is an active organic light-emitting diode (OLED). It makes the diode work not only by adding a signal, but by providing an additional point source. It's like a TV. You hook it up to a cable signal, but you can't see it. You have to power it to see it. But only the power, not the cable signal, is no program to watch.

Structurally, an organic light-emitting diode is basically a diode, and an AMOLED is a diode or multiple transistors working together to drive a single light-emitting point.

Related articles:

LCD screen and LED screen: features, advantages and disadvantages comparison and application scenarios

Comparison of the advantages and disadvantages of LCD and OLED results

The Difference Between LCD and IPS Screens

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