What are OLEDs?
Organic Light Emitting Diodes (OLED) have become an indispensable part of the display market. An OLED is a thin film component made of organic semiconductor materials deposited on a substrate (glass). In the case of small OLED displays, these can be addressed using a passive matrix, whereas larger sizes call for active matrix technology due to the bulk resistance, that is, each pixel is controlled by a separate transistor.
OLED vs LCD - Advantages of OLED Displays
OLEDs have some advantages compared to LCD Displays:
- Thin and lightweight design
- Durable, as a result of the semiconductor process used to manufacture them
- OLEDs do not use backlight
- Energy-efficient, since only the illuminated pixels require power
- Lower CO2 emissions
- Large operating temperature range from -40 °C up to +105 °C
- Easier to read under sunlight
- Excellent contrast, resulting from the deep black background
- Almost unlimited viewing angle
- Quick reaction times below 1 microsecond, i.e. 1,000 times faster than LCDs (milliseconds)
Thanks to their characteristics, OLED displays are perfectly suitable for automotive- and outdoor applications.
Among passive matrix OLEDs, further distinctions can be made between character-, graphics- and full-color types.
Subcategories of OLEDs:
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