A Self-Refreshing Memory-in-Pixel Comprising Low Temperature Poly-Silicon and Oxide TFTs for 3-Bit Liquid Crystal Displays

Jo, Jae-Hee; Lee, Woo-Rim; Chung, Hongsuk; Lee, Seung-Woo

doi:10.1109/led.2021.3074678

Cited by 4 publications

(6 citation statements)

References 12 publications

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“…We investigated the dynamic power consumption of the conventional 1T1C and our previous architectures [14]. We assumed that a full-white pattern is displayed on the screen for calculation.…”

Section: Resultsmentioning

confidence: 99%

“…Consequently, the driving frequency is significantly lowered. Therefore, it consumes less dynamic power than conventional refresh methods [14].…”

Section: Display Periodmentioning

confidence: 99%

“…Recently, oxide thin-film transistors (TFTs) and lowtemperature polycrystalline silicon and oxide (LTPO) TFTs have been intensively studied [9], [10]. Several studies have used oxide or LTPO TFTs in MIP circuits [11]- [14]. Owing to the ultralow leakage current characteristics of oxide TFTs, the refresh rate of the dynamic-type MIP was lowered.…”

Section: Introductionmentioning

confidence: 99%

“…Owing to the ultralow leakage current characteristics of oxide TFTs, the refresh rate of the dynamic-type MIP was lowered. In a previous study, we proposed multi-level MIP circuits comprising LTPO TFTs [14]. However, the fabrication process of LTPO TFTs is complicated, expensive, and has poor uniformity.…”

Section: Introductionmentioning

confidence: 99%

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A Self-Refresh Memory-in-Pixel for Low-Power Reflective Liquid Crystal Displays

Jeong

Chung

et al. 2023

IEEE Electron Device Lett.

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In this letter, we propose a self-refresh multilevel memory-in-pixel circuit for reflective low-power liquid crystal displays comprising oxide thin film transistors. In the absence of image update, dynamic power consumption can be minimized by integrating memory cell. The memory cell comprises only two transistors and one capacitor, which are suitable for high-resolution displays. Measurement results verify that the proposed circuit achieves 3-bit grayscale display operating at 1 Hz. Moreover, the proposed circuit consumes only 1.72 % of dynamic power compared to the conventional one. Thus, the proposed circuit is expected to simultaneously achieve high performance and low power consumption.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Consequently, the driving frequency is significantly lowered. Therefore, it consumes less dynamic power than conventional refresh methods [14].…”

Section: Display Periodmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Self-Refresh Memory-in-Pixel for Low-Power Reflective Liquid Crystal Displays

Jeong

Chung

et al. 2023

IEEE Electron Device Lett.

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“…Owing to the low leakage current, oxide TFT memories and their applications have been studied [10]- [13]. Fig.…”

Section: Proposed Circuitmentioning

confidence: 99%

Selective Scan Driver for Low-Power Consumption Using Oxide Thin Film Transistors

Jeong

Joung

et al. 2022

IEEE Electron Device Lett.

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In this letter, a scan driver circuit that can generate scan signals only in a selected area is proposed. It refreshes only the area that needs to be updated without refreshing the whole display. The proposed circuit with ten stages was fabricated using oxide thin film transistors. The additional area for selective driving occupies only 14.5 % of the unit stage area. This study confirms that the power consumption in the data lines and pixels for a dot pattern can be reduced by 25 % and 37.5 % when 50 % and 25 % of scan lines are selected, respectively.

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An Advanced Full Adder Based Arithmetic Logic Unit (ALU) Using Low-Temperature Poly-Si Oxide TFTs

Geng

Chuai

et al. 2022

IEEE Trans. Electron Devices

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A Self-Refreshing Memory-in-Pixel Comprising Low Temperature Poly-Silicon and Oxide TFTs for 3-Bit Liquid Crystal Displays

Cited by 4 publications

References 12 publications

A Self-Refresh Memory-in-Pixel for Low-Power Reflective Liquid Crystal Displays

A Self-Refresh Memory-in-Pixel for Low-Power Reflective Liquid Crystal Displays

Selective Scan Driver for Low-Power Consumption Using Oxide Thin Film Transistors

An Advanced Full Adder Based Arithmetic Logic Unit (ALU) Using Low-Temperature Poly-Si Oxide TFTs

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