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A Low-luminance Compensation Current Driver for AMOLED Displays
- Issue Date
- Feb-2021
- Publisher
- IEEK PUBLICATION CENTER
- Keywords
- AMOLED displays; charge-transfer; circuit; feedback trans-conductance current-mode; driver; ultra-low compensation current
- Citation
- JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, v.21, no.1, pp 68 - 72
- Pages
- 5
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE
- Volume
- 21
- Number
- 1
- Start Page
- 68
- End Page
- 72
- ISSN
- 1598-1657
2233-4866
- Abstract
- A Feedback Trans-conductance (FB-Gm) current-mode driver with a charge-transfer circuit is proposed to achieve ultra-low current drivability (<= 2 nA). By using an FB-Gm current-mode driver, both threshold-voltage and mobility variations can be compensated. In addition, an initialization technique that uses a charge-transfer circuit is proposed to handle an ultra-low current of approximately 2 nA with fast driving speed. The simulation results show that the proposed current-mode driver can compensate for 2 nA of current within 10 mu s of one-row time with 10 mu A/channel of static-current consumption. Here, 1.5 k Omega of series resistance and 25 pF of shunt capacitance, which represent double-wide ultra XGA (DWUXGA) AMOLED displays, are used for accurate simulation.
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Related Researcher
- Kim, Soo Youn
- College of Advanced Convergence Engineering (Division of System Semiconductor)