5 minutes to learn about oled and led displays

阅读中文   Read in English   Lire le Français    Leer Español    Leer  Español - México   Membaca Indonesia   日本語を読む   قراءة العربية

Directory

Definition of oled
The advantages and disadvantages of oled
The difference between oled and led displays

Definition of oled

OLED (Organic Light Emitting Diode) is a new type of display technology composed of organic molecular materials that emits light spontaneously. Oleds are widely used in display devices such as smartphones, tablets and televisions because they offer higher contrast, brighter colors, faster response, wider viewing angles and thinner size than traditional LCDS.

OLED displays are made up of a range of organic materials, the chief of which is the light-emitting layer. The luminescent layer is a thin film composed of organic molecules, which has a high photoelectric conversion efficiency and can directly convert electrical energy into light energy. When electrons and holes combine in the luminescent layer, they release energy and produce photons, which emit light. Because OLED's light-emitting layer is flexible, it can be made into a flexible screen, allowing it to be bent or folded without being damaged.

The advantages and disadvantages of oled

OLED displays have many advantages. For one thing, OLED displays have a very high contrast ratio because they can produce very deep black between black and white, which improves the sharpness of the display. Second, OLED displays have very vivid colors because they are able to emit light directly at each pixel, producing very vivid colors. In addition, the OLED display is very responsive because it does not require a backlight and can quickly respond to changes, thus reducing residual and dragging phenomena. Finally, OLED displays are very thin, and because they do not require components such as backlight and polarizers, they can be made very thin, thus reducing the size and weight of the device.

However, OLED displays also have some drawbacks. First, OLED displays have a relatively short lifespan, as organic molecular materials are susceptible to environmental factors such as oxidation and humidity, resulting in a shortened lifespan. Second, the cost of OLED displays is relatively high because the manufacturing process is more complex than traditional LCDS, requiring the use of more materials and equipment. Finally, there are some problems with the brightness and stability of OLED displays, as the luminescent materials tend to suffer from light decay after prolonged use, resulting in changes in brightness and color.

The difference between oled and led displays

Different working principle

LED display is the use of LED beads as a light source, by controlling the strength of the current to control the brightness of LED beads, so as to achieve the display effect. OLED displays, on the other hand, use the luminous properties of organic materials to convert electrical energy directly into light energy, allowing them to emit light themselves without the need for an external light source.

Different display effect

Due to the dot-matrix design of LED display, images and text can be displayed by adjusting the brightness and color of LED beads, but the display effect is relatively simple, with relatively low color and contrast. OLED displays, on the other hand, use a face array design, in which each pixel spontaneously emits light, allowing for more realistic, vivid colors and higher contrast.

Price difference

Although OLED technology has many advantages, it is also expensive due to its relatively complex manufacturing process and relatively high production cost. The production cost of LED technology is relatively low, and the price is relatively close to the people.

Different application scope

LED display has a wide range of applications, commonly seen in indoor and outdoor billboards, stage shows, sports games, large-scale events and other occasions. OLED technology is mainly used in high-end mobile devices (such as smartphones, tablets, etc.), TV and other high-end display devices.

Different energy consumption

LED displays use less power because they only light up when needed, while OLED displays use more power because they constantly emit light.