OLED (Organic Light Emitting Diode) display screen is a flat display technology that uses light-emitting diodes made of organic materials as light-emitting pixels. OLED screens are becoming increasingly popular in consumer electronics due to their unique properties, especially in smartphones, televisions, smartwatches, and other portable devices.

characteristic:

Self illumination: Each pixel of an OLED screen can emit light on its own without the need for a backlight, making the screen thinner and more energy-efficient.

High contrast: Due to the independent control of each pixel, OLED screens can provide extremely high contrast, and black areas are actually non luminous, thus presenting true black.

Wide viewing angle: OLED screens have a viewing angle of nearly 180 degrees, and regardless of which angle they are viewed from, the image quality will not significantly decrease.

Fast response time: OLED screens have extremely fast response time, making them suitable for displaying high-speed moving images and reducing motion blur.

Flexibility and Flexibility: Some OLED screens can be made using flexible substrates, making it possible to manufacture displays that can be bent, folded, or even curled.

Vivid colors: OLED screens can provide vibrant and saturated colors, resulting in vivid display effects.

Structure:

The basic structure of OLED displays includes:

Cathode layer: usually a transparent conductive layer responsible for injecting electrons into organic materials.

Organic luminescent layer: This is the core of OLED technology, composed of one or more layers of organic compounds. When electrons and holes combine in this layer, light is produced.

Anode layer: It is also a transparent conductive layer responsible for injecting holes into organic materials.

Substrate layer: It can be glass or flexible plastic, supporting the entire structure.

TFT (thin film transistor) layer: used to control the switching and brightness of each pixel.

Type:

There are two main types of OLED displays:

AMOLED (Active Matrix OLED): Using a thin film transistor (TFT) array to actively control each pixel, suitable for large-sized and high-resolution display needs.

PMOLED (Passive Matrix OLED): Activating pixels through row and column intersections, with a simpler structure and lower cost, but not suitable for high-resolution and large-sized screens.

Application:

OLED displays have a wide range of applications, including:

Smartphones and tablets

Smartwatches and wearable devices

High end TVs and monitors

VR (Virtual Reality) Head Display

Car interior display

Billboards and indoor and outdoor signage

matters needing attention:

When using OLED displays, the following points should be noted:

Aging issue: OLED screens are at risk of burning or aging, especially when displaying static images or high brightness for a long time.

Brightness and lifespan: There is a trade-off between the brightness and lifespan of OLED screens, and high brightness may shorten the lifespan of the screen.

Cost: Although OLED technology is gradually becoming popular, its production cost is still higher than traditional LCD screens.

When selecting OLED displays, consideration should be given to their performance, cost, lifespan, and suitability for specific application scenarios. With the advancement of technology and large-scale production, the cost of OLED displays is gradually decreasing, and it is expected to be applied in more devices in the future.