Organic Light Emitting Diodes (OLED)
They 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.
The advantages of OLEDs as compared with conventional LCDs:
- Higher contrast, since OLEDs do not use backlight
- Wide viewing angles regardless of viewing direction
- Very thin design
- Energy-efficient, since only the illuminated pixels require power
- Quick reaction times below 1 microsecond, i.e. 1,000 times faster than LCDs (milliseconds)
Among passive matrix OLEDs, further distinctions can be made between segment, character, graphics and full-color types.
Subcategories of OLEDs:
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