OLED (Organic Light Emitting Diode) displays are here today and people talk of them how brilliant those are. Oh Yes, those are brilliant and now this technology has also entered to mobile devices and therefore it has became relevant to developers who are designing UI SW. When it comes to power consumption, OLED has very unique characteristics vs. TFT(thin-film transistor) LCD’s. Key point being that power consumption varies a lot according to colors of the content in OLED.
We’ve measured 3.2" displays in Nokia with following results:
Figure: 3.2" OLED vs.LCD
displays and power consumption in milliwatts [mW].
All white consumes 14x vs. all black screen in OLED! Content makes also difference in power consumption of LCD display but not that much.
Tip: Optimize colors for OLED. Prefer dark colors. Same optimizations apply today for Nokia’s TFT LCD displays. These are technologies used in all Nokia smart phones.