Journal ArticleDOI
A new a-Si:H thin-film transistor pixel circuit for active-matrix organic light-emitting diodes
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TLDR
In this article, a pixel circuit using hydrogenated amorphous silicon (a-Si:H) thin-film transistors (TFTs), composed of three switching and one driving TFT, for active-matrix organic light-emitting diodes (AMOLEDs) with a voltage source method was proposed.Abstract:
We propose a new pixel circuit using hydrogenated amorphous silicon (a-Si:H) thin-film transistors (TFTs), composed of three switching and one driving TFT, for active-matrix organic light-emitting diodes (AMOLEDs) with a voltage source method. The circuit simulation results based on the measured threshold voltage shift of a-Si:H TFTs by gate-bias stress indicate that this circuit compensates for the threshold voltage shifts over 10000 h of operation.read more
Citations
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Journal ArticleDOI
Driving schemes for a-Si and LTPS AMOLED displays
TL;DR: In this paper, the voltage and current programming schemes for AMOLED displays are reviewed and design considerations for both current and voltage schemes with focus on stability and programming speed for both amorphous silicon and low temperature polysilicon (LTPS) pixel circuits.
Patent
System and methods for aging compensation in AMOLED displays
TL;DR: In this article, a driving transistor is used to drive current through a light emitting device according to programming information which is stored on a storage device, such as a capacitor, and a switching transistor is included to select the circuits for programming, monitoring, and emission.
Patent
Method and system for programming, calibrating and driving a light emitting device display
TL;DR: In this paper, a method and system for programming, calibrating and driving a light emitting device display is described, which may include extracting a time dependent parameter of a pixel for calibration.
Journal ArticleDOI
A Novel LTPS-TFT Pixel Circuit Compensating for TFT Threshold-Voltage Shift and OLED Degradation for AMOLED
Chih-Lung Lin,Yung Chih Chen +1 more
TL;DR: In this article, a pixel circuit that uses low-temperature polycrystalline-silicon thin-film transistors (LTPS-TFTs) composed of one driving and four switching TFTs for active-matrix organic light-emitting diodes (AMOLEDs) with a voltage-source method is presented.
Journal ArticleDOI
AMOLED Pixel Circuit With Electronic Compensation of Luminance Degradation
TL;DR: In this paper, a voltage-programmed pixel circuit using hydrogenated amorphous silicon (a-Si:H) thin-film transistors (TFTs) for active-matrix organic light-emitting diodes (AMOLEDs) is presented.
References
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Journal ArticleDOI
Bias‐stress‐induced stretched‐exponential time dependence of charge injection and trapping in amorphous thin‐film transistors
Frank R. Libsch,Jerzy Kanicki +1 more
TL;DR: In this article, the threshold voltage instabilities in nitride/oxide dual gate dielectric amorphous silicon (a•Si:H) thin-film transistors are investigated as a function of stress time, stress temperature, and stress bias.
Journal ArticleDOI
Approximation of wiring delay in MOSFET LSI
TL;DR: Two approximation methods for wiring delay in MOS LSI are studied and the widely used L ladder circuit model is found to be a poor approximation, while /spl pi and T ladder circuit models give satisfactory results.
Journal ArticleDOI
24.4L: Late‐News Paper: A 13.0‐inch AM‐OLED Display with Top Emitting Structure and Adaptive Current Mode Programmed Pixel Circuit (TAC)
Tatsuya Sasaoka,Mitsunobu Sekiya,Akira Yumoto,Jiro Yamada,Takashi Hirano,Yuichi Iwase,Takao Yamada,Tadashi Ishibashi,Takao Mori,Mitsuru Asano,Shinichiro Tamura,Tetsuo Urabe +11 more
TL;DR: In this paper, the authors developed a large-scale active matrix organic light-emitting diode (AM-OLED) display with good gray scale uniformity and high aperture ratio.
Journal ArticleDOI
Current-source a-Si:H thin-film transistor circuit for active-matrix organic light-emitting displays
TL;DR: In this article, a four thin-film transistor (TFT) circuit based on hydrogenated amorphous silicon (a-Si:H) technology was proposed to provide a constant output current level and can be automatically adjusted for TFT threshold voltage variations.
Journal ArticleDOI
Improved a-Si:H TFT pixel electrode circuits for active-matrix organic light emitting displays
TL;DR: In this article, two improved four thin-film transistors (TFTs) pixel electrode circuits based on hydrogenated amorphous silicon (a-Si:H) technology have been designed.