A -24 dB in-Band Noise-Immunity Mutual Capacitance Readout System for Variable Refresh Rate of Active-Matrix OLED Display

2020 ◽  
Vol 67 (4) ◽  
pp. 1126-1135
Author(s):  
Seung Hoon Ko
Keyword(s):  
Noise Immunity ◽  
Readout System ◽  
Refresh Rate ◽  
Active Matrix ◽  
Band Noise ◽  
Mutual Capacitance ◽  
Oled Display

scholarly journals A Mutual Capacitance Touch Readout IC with Synchronization in Touch and Mobile Display Driving for High Refresh Rate AMOLED Panels

Micromachines ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 922
Author(s):  
Seunghoon Ko
Keyword(s):  
System Architecture ◽  
Noise Suppression ◽  
Touch Screen ◽  
Horizontal Line ◽  
Time Sharing ◽  
Refresh Rate ◽  
Front End ◽  
Scan Rate ◽  
Mutual Capacitance ◽  
Analog Voltage

This paper presents a mutual capacitance touch readout IC architecture for 120 Hz high-refresh-rate AMOLED displays. In high-refresh-rate AMOLED panels, whole pixels in a horizontal line should be updated without any time-sharing with each other, leading to an amplified display noise on touch screen panel (TSP) electrodes. The proposed system architecture mitigates severe display noise by synchronizing the driving for the TSP and AMOLED pixel circuits. The proposed differential sensing technique, which is based on noise suppression in reference to mutual capacitance channels, minimizes common-mode display noise. In the front-end circuit, intrinsic circuit offset is cancelled by a chopping scheme, which correlates to the phase of the driving signals in the TSP driver and operating clocks of the front-end. Operating at a 120 Hz scan-rate, it reduces display noise by more than 11.6 dB when compared with the conventional single-ended TSP sensing method. With a built-in 130-nm CMOS, a prototype IC occupies an area of 8.02 mm2 while consuming 6.4-mW power from a 3.3 V analog voltage supply.

High Retention-Time Nonvolatile Amorphous Silicon TFT Memory for Static Active Matrix OLED Display without Pixel Refresh

2019 ◽  
Vol 33 (5) ◽  
pp. 365-373
Author(s):  
Yifei Huang ◽  
Bahman Hekmatshoar ◽  
Sigurd Wagner ◽  
James Sturm
Keyword(s):  
Amorphous Silicon ◽  
Retention Time ◽  
Active Matrix ◽  
Oled Display

scholarly journals Fabrication of charge‐pump active‐matrix OLED display panel with 64 × 64 pixels

2006 ◽  
Vol 7 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Se‐Hwan Na ◽  
Jae Hoon Shim ◽  
Mi Young Kwak ◽  
Jong‐Wook Seo
Keyword(s):  
Charge Pump ◽  
Active Matrix ◽  
Oled Display

13.1:Invited Paper: Technological Evolution for Large Screen Size Active Matrix OLED Display

2007 ◽  
Vol 38 (1) ◽  
pp. 161-164 ◽  
Author(s):  
Tetsuo Urabe ◽  
Tatsuya Sasaoka ◽  
Koichi Tatsuki ◽  
Jun Takaki
Keyword(s):  
Technological Evolution ◽  
Screen Size ◽  
Active Matrix ◽  
Large Screen ◽  
Oled Display

4.3: A Phosphorescent Active-Matrix OLED Display Driven by Amorphous Silicon Backplane

2003 ◽  
Vol 34 (1) ◽  
pp. 14 ◽  
Author(s):  
Jiin - Jou Lih ◽  
Chih - Feng Sung ◽  
M. S. Weaver ◽  
Mike Hack ◽  
J. J. Brown
Keyword(s):  
Amorphous Silicon ◽  
Active Matrix ◽  
Oled Display
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