Fast Progressive Compensation Method for Externally Compensated AMOLED Displays
The externally compensated display system has been proved to have greater potential to completely solve aging and uniformity issues of the AMOLED display system than the internally compensated display system. However, the traditional compensation method is time consuming and responses slowly to the...
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doaj-bf2d2bc5f0484d868d64f933101de6112021-03-29T18:53:15ZengIEEEIEEE Journal of the Electron Devices Society2168-67342021-01-01925726410.1109/JEDS.2021.30571959347466Fast Progressive Compensation Method for Externally Compensated AMOLED DisplaysHing-Mo Lam0https://orcid.org/0000-0002-3911-0798Hezi Qiu1Chenglin Li2Jinyuan Wen3Wenlong Bai4Congwei Liao5https://orcid.org/0000-0003-3888-4975Min Zhang6https://orcid.org/0000-0002-2225-8024Hailong Jiao7https://orcid.org/0000-0002-2815-6168Shengdong Zhang8https://orcid.org/0000-0002-1815-8661School of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, ChinaSchool of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, ChinaSchool of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, ChinaSchool of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, ChinaSchool of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, ChinaSchool of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, ChinaSchool of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, ChinaSchool of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, ChinaSchool of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, Shenzhen, ChinaThe externally compensated display system has been proved to have greater potential to completely solve aging and uniformity issues of the AMOLED display system than the internally compensated display system. However, the traditional compensation method is time consuming and responses slowly to the mobility change of TFT. The traditional compensation method performs calibration during the inter-frame blanking period, the length of which is limited. Only a few rows of pixel circuits can be calibrated per frame. Furthermore, each pixel circuit needs multiple times of calibration to reach compensated state. In this article, a fast progressive compensation method is proposed. The calibration of a row of pixel circuits is performed K rows ahead of the display line during the display data updating period. By doing so, the proposed fast progressive compensation method can approach compensated state faster than the traditional method because display data updating period is significantly longer than the inter-frame blanking period. For the case of 10% inter-frame blanking period and 20 <inline-formula> <tex-math notation="LaTeX">$\mu \text{s}$ </tex-math></inline-formula> waiting delay for feedback data line to be stable, the proposed method reduces the compensation time by ~14x than the traditional method.https://ieeexplore.ieee.org/document/9347466/Thin-film transistor (TFT)external compensationfast calibration |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hing-Mo Lam Hezi Qiu Chenglin Li Jinyuan Wen Wenlong Bai Congwei Liao Min Zhang Hailong Jiao Shengdong Zhang |
spellingShingle |
Hing-Mo Lam Hezi Qiu Chenglin Li Jinyuan Wen Wenlong Bai Congwei Liao Min Zhang Hailong Jiao Shengdong Zhang Fast Progressive Compensation Method for Externally Compensated AMOLED Displays IEEE Journal of the Electron Devices Society Thin-film transistor (TFT) external compensation fast calibration |
author_facet |
Hing-Mo Lam Hezi Qiu Chenglin Li Jinyuan Wen Wenlong Bai Congwei Liao Min Zhang Hailong Jiao Shengdong Zhang |
author_sort |
Hing-Mo Lam |
title |
Fast Progressive Compensation Method for Externally Compensated AMOLED Displays |
title_short |
Fast Progressive Compensation Method for Externally Compensated AMOLED Displays |
title_full |
Fast Progressive Compensation Method for Externally Compensated AMOLED Displays |
title_fullStr |
Fast Progressive Compensation Method for Externally Compensated AMOLED Displays |
title_full_unstemmed |
Fast Progressive Compensation Method for Externally Compensated AMOLED Displays |
title_sort |
fast progressive compensation method for externally compensated amoled displays |
publisher |
IEEE |
series |
IEEE Journal of the Electron Devices Society |
issn |
2168-6734 |
publishDate |
2021-01-01 |
description |
The externally compensated display system has been proved to have greater potential to completely solve aging and uniformity issues of the AMOLED display system than the internally compensated display system. However, the traditional compensation method is time consuming and responses slowly to the mobility change of TFT. The traditional compensation method performs calibration during the inter-frame blanking period, the length of which is limited. Only a few rows of pixel circuits can be calibrated per frame. Furthermore, each pixel circuit needs multiple times of calibration to reach compensated state. In this article, a fast progressive compensation method is proposed. The calibration of a row of pixel circuits is performed K rows ahead of the display line during the display data updating period. By doing so, the proposed fast progressive compensation method can approach compensated state faster than the traditional method because display data updating period is significantly longer than the inter-frame blanking period. For the case of 10% inter-frame blanking period and 20 <inline-formula> <tex-math notation="LaTeX">$\mu \text{s}$ </tex-math></inline-formula> waiting delay for feedback data line to be stable, the proposed method reduces the compensation time by ~14x than the traditional method. |
topic |
Thin-film transistor (TFT) external compensation fast calibration |
url |
https://ieeexplore.ieee.org/document/9347466/ |
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