Back to Search
Start Over
5-3: Distinguished Paper: Power Saving through State Retention in IGZO-TFT AMOLED Displays for Wearable Applications
- Source :
- SID Symposium Digest of Technical Papers, 1, 48, 38-41
- Publication Year :
- 2017
- Publisher :
- Wiley-Blackwell Publishing Ltd, 2017.
-
Abstract
- We present a qHD (960x540 with 3 sub-pixels) top-emitting AMOLED display with 340ppi resolution using a self-aligned (SA) IGZO TFT backplane on polyimide-foil with humidity barrier. The back plane process flow is based on a 7 layer photolithography process with a CD=4um. We implement a 2T1C pixel engine and use commercial source driver IC made for LTPS. By using IGZO TFT and leveraging the extremely low off-current, we can switch-off the power to the source and gate driver while maintaining the image un-changed for several minutes. We demonstrate that, depending on the image content, low-refresh operation yields reduction in power consumption of up to 50% compared to normal (continuous) operation. We show that with further increase in resolution, the power saving through state retention will be even more significant.
- Subjects :
- Metal-oxide semiconductors
Engineering
TS - Technical Sciences
Industrial Innovation
business.industry
State retention
Electrical engineering
HOL - Holst
law.invention
Power (physics)
Flexible displays
AMOLED
Backplane
Thin-film transistor
law
Flexible display
Nano Technology
Self-aligned TFT
Electronics
Photolithography
business
AND gate
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- SID Symposium Digest of Technical Papers, 1, 48, 38-41
- Accession number :
- edsair.doi.dedup.....fc33c63151278e542cf9407bd20654a4