7-3: AMOLED Pixel Structure Using the Close Loop Negative Feedback Method for High Resolution Displays

Lin, Chen-Chi; Yen, Shao-Wen; Hsu, Sheng-Yu; Kuo, Ting-Wei; Lee, Tsong-Shing; Liu, Chun-Hsin; Lin, Shih-Liang; Hsiao, Hsiamg-Yun; Kung, Chih-Hao; Yeh, Yu-Fang; Lin, Yu‐Hsin

doi:10.1002/sdtp.10604

Cited by 3 publications

(2 citation statements)

References 1 publication

(1 reference statement)

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“…However, for voltage programming methods, the pixel circuit is required to correct variations in V TH , mobility, and V DD . Thus, Lin et al proposed a feedback pixel circuit to calibrate the gate voltage distortion of driving TFTs during the light emission time [17]. Lee et al re-used the scan line for supplying power to replace the conventional power line to increase the aperture ratio [18].…”

Section: Introductionmentioning

confidence: 99%

An AMOLED Pixel Circuit Based on LTPS Thin-film Transistors with Mono-Type Scanning Driving

Deng

Zhen

et al. 2020

Electronics

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Using low-temperature poly-silicon thin-film transistors (LTPS TFTs) as a basis, a pixel circuit for an active matrix organic light-emitting diode (AMOLED) with narrow bezel displays was developed. The pixel circuit features mono-type scanning signals, elimination of static power lines, and pixel-integrated emitting control functions. Therefore, gate driver circuits of the display bezel can be simplified efficiently. In addition, the pixel circuit has a high-resolution design due to an increase of the pulse width of the scan signal to extend the threshold voltage and internal–resistance drop (IR drop) detection period. Further, regarding the influences of process–voltage–temperature (PVT) variation in the pixel circuit, comparison investigations were carried out with the proposed circuit and other pixel circuits with mono-type scanning signals using Monte Carlo analysis. The feasibility of the proposed pixel circuit is well demonstrated, as the current variations can be reduced to 2.1% for the supplied power reduced from 5 V to 3 V due to IR drop, and the current variation is as low as 10.6% with operating temperatures from –40 degrees to 85 degrees.

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Section: Introductionmentioning

confidence: 99%

An AMOLED Pixel Circuit Based on LTPS Thin-film Transistors with Mono-Type Scanning Driving

Deng

Zhen

et al. 2020

Electronics

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“…In recent years, active-matrix organic light-emitting diode (AMOLED) displays have been well developed with high contrast ratio, short response time and wide viewing angles [1]. During the process towards commercialization, significant efforts have been devoted to obtain narrow bezel in worldwide.…”

Section: Introductionmentioning

confidence: 99%

1.2: Invited Paper: Dynamic threshold voltage compensation IGZO‐GOA circuit for AMOLED display

Xue

Han²,

Wang³

et al. 2019

Symp Digest of Tech Papers

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A dual‐gate amorphous indium‐gallium‐zinc‐oxide (a‐IGZO) thin‐film transistor (TFT) has been proposed and designed in this work. Based on this specific structure, a technologically advanced external Vth compensation system, where Vth can be controllable by an external DC signal source, has been developed for gate driver on array (GOA). Subsequently, the working mode of this circuit was introduced. Moreover, detailed simulation has been performed to study the appropriate process window. Finally, the proposed GOA circuit exhibited stable high‐voltage output pulse, meanwhile, the lifetime showed an significant improvement with the utilization of the external Vth compensation system. It should be also mentioned that a wide pulse of 3.6ms has been obtained to sense Vth of driving TFTs in pixel circuits.

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Compensation For Threshold Instability Of Thin-Film Transistors

Flores¹

2017

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7-3: AMOLED Pixel Structure Using the Close Loop Negative Feedback Method for High Resolution Displays

Cited by 3 publications

References 1 publication

An AMOLED Pixel Circuit Based on LTPS Thin-film Transistors with Mono-Type Scanning Driving

An AMOLED Pixel Circuit Based on LTPS Thin-film Transistors with Mono-Type Scanning Driving

1.2: Invited Paper: Dynamic threshold voltage compensation IGZO‐GOA circuit for AMOLED display

Compensation For Threshold Instability Of Thin-Film Transistors

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