Detailed Information
Cited 11 time in 
Cited 14 time in 
Cited 14 time in
Metadata Downloads
Pixel Circuit with P-Type Low-Temperature Polycrystalline Silicon Thin-Film Transistor for Micro Light-Emitting Diode Displays Using Pulse Width Modulation
- Authors
- Oh, J.[Oh, J.]; Kim, J.[Kim, J.]; Lee, J.[Lee, J.]; KYO, J. E.[KYO, JUNG EUN]; Oh, D.[Oh, D.]; Min, J.[Min, J.]; IM, H.[IM, HWARIM]; Kim, Y.[Kim, Y.]
- Issue Date
- Oct-2021
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Error analysis; Gray-scale; Light emitting diodes; low-temperature polycrystalline silicon thin-film transistor; Micro light-emitting diode pixel circuit; Pulse width modulation; pulse width modulation; Thin film transistors; Wavelength measurement; wavelength shift; Writing
- Citation
- IEEE Electron Device Letters, v.42, no.10, pp.1496 - 1499
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Electron Device Letters
- Volume
- 42
- Number
- 10
- Start Page
- 1496
- End Page
- 1499
- ISSN
- 0741-3106
- Abstract
- Herein, we present a novel low-temperature polycrystalline silicon (LTPS) thin-film transistor (TFT) pixel circuit for a micro light-emitting diode (μLED) display based on pulse width modulation (PWM). By adopting PWM, we could achieve 10-bit gray levels of μLED without wavelength shift, which is a challenge in the realization of μLEDs. Furthermore, the proposed circuit compensated for the variation in threshold voltage (VTH) without an external sensing system. We simulated the error rate of the μLED emission time of the proposed pixel circuit depending on the VTH change. We measured the wavelength shift of the μLED using the fabricated circuit. This shift in PWM was smaller than that in pulse amplitude modulation (PAM). Consequently, the proposed pixel circuit could overcome screen distortions caused by color shifts of μLED displays using PWM techniques. IEEE
- Files in This Item
- There are no files associated with this item.
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
Related Researcher
- KIM, YONG SANG
- Information and Communication Engineering (Electronic and Electrical Engineering)