Abstract
Active-matrix organic light-emitting diodes (AMOLEDs) are ideal for future TV applications due to their ability to faithfully reproduce real images. However, pixel luminance can be affected by instability of driver TFTs and aging effect in OLEDs. This paper reports on a pixel driver utilizing a metal-insulator-semiconductor (MIS) sensor for luminance control of the OLED element. In the proposed pixel architecture for bottom-emission AMOLEDs, the embedded MIS sensor shares the same layer stack with back-channel etched a Si:H TFTs to maintain the fabrication simplicity. The pixel design for a large-Area HD display is presented. The external electronics performs image processing to modify incoming video using correction parameters for each pixel in the backplane, and also sensor data processing to update the correction parameters. The luminance adjusting algorithm is based on realistic models for pixel circuit elements to predict the relation between the programming voltage and OLED luminance. SPICE modeling of the sensing part of the backplane is performed to demonstrate its feasibility. Details on the pixel circuit functionality including the sensing and programming operations are also discussed.
| Original language | English |
|---|---|
| Title of host publication | Optical Sensors 2017 |
| Publisher | Spie -- the Int Soc for Optical Engineering |
| Volume | 10231 |
| ISBN (Electronic) | 978-151060963-1 |
| DOIs | |
| Publication status | Published - 1 Jan 2017 |
| Event | Optical Sensors 2017 - Prague, Czech Republic Duration: 24 Apr 2017 → 27 Apr 2017 |
Conference
| Conference | Optical Sensors 2017 |
|---|---|
| Country | Czech Republic |
| City | Prague |
| Period | 24/04/17 → 27/04/17 |
Fingerprint
Keywords
- Amorphous silicon
- Displays
- Optical feedback
- Pixel circuits
Cite this
}
Luminance compensation for AMOLED displays using integrated MIS sensors. / Vygranenko, Yuri; Fernandes, Miguel; Louro, Paula; Vieira, Manuela.
Optical Sensors 2017. Vol. 10231 Spie -- the Int Soc for Optical Engineering, 2017. UNSP 1023128.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Luminance compensation for AMOLED displays using integrated MIS sensors
AU - Vygranenko, Yuri
AU - Fernandes, Miguel
AU - Louro, Paula
AU - Vieira, Manuela
N1 - sem pdf. Portuguese Foundation of Science and Technology- SFRH/BPD/102217/2014
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Active-matrix organic light-emitting diodes (AMOLEDs) are ideal for future TV applications due to their ability to faithfully reproduce real images. However, pixel luminance can be affected by instability of driver TFTs and aging effect in OLEDs. This paper reports on a pixel driver utilizing a metal-insulator-semiconductor (MIS) sensor for luminance control of the OLED element. In the proposed pixel architecture for bottom-emission AMOLEDs, the embedded MIS sensor shares the same layer stack with back-channel etched a Si:H TFTs to maintain the fabrication simplicity. The pixel design for a large-Area HD display is presented. The external electronics performs image processing to modify incoming video using correction parameters for each pixel in the backplane, and also sensor data processing to update the correction parameters. The luminance adjusting algorithm is based on realistic models for pixel circuit elements to predict the relation between the programming voltage and OLED luminance. SPICE modeling of the sensing part of the backplane is performed to demonstrate its feasibility. Details on the pixel circuit functionality including the sensing and programming operations are also discussed.
AB - Active-matrix organic light-emitting diodes (AMOLEDs) are ideal for future TV applications due to their ability to faithfully reproduce real images. However, pixel luminance can be affected by instability of driver TFTs and aging effect in OLEDs. This paper reports on a pixel driver utilizing a metal-insulator-semiconductor (MIS) sensor for luminance control of the OLED element. In the proposed pixel architecture for bottom-emission AMOLEDs, the embedded MIS sensor shares the same layer stack with back-channel etched a Si:H TFTs to maintain the fabrication simplicity. The pixel design for a large-Area HD display is presented. The external electronics performs image processing to modify incoming video using correction parameters for each pixel in the backplane, and also sensor data processing to update the correction parameters. The luminance adjusting algorithm is based on realistic models for pixel circuit elements to predict the relation between the programming voltage and OLED luminance. SPICE modeling of the sensing part of the backplane is performed to demonstrate its feasibility. Details on the pixel circuit functionality including the sensing and programming operations are also discussed.
KW - Amorphous silicon
KW - Displays
KW - Optical feedback
KW - Pixel circuits
UR - http://www.scopus.com/inward/record.url?scp=85026519931&partnerID=8YFLogxK
U2 - 10.1117/12.2265937
DO - 10.1117/12.2265937
M3 - Conference contribution
VL - 10231
BT - Optical Sensors 2017
PB - Spie -- the Int Soc for Optical Engineering
ER -