多刷新频率驱动方案的单输出使能信号区域选择移位寄存器

IF 1.7 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of the Society for Information Display Pub Date : 2024-09-29 DOI:10.1002/jsid.2008
Min Kyu Chang, Ji Hoon Kim, Hyoungsik Nam
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引用次数: 0

摘要

针对高性能显示器开发了许多低功耗技术。其中一种方法是根据输入图像改变刷新率,在静止图像和慢速视频中降低频率。为支持可变刷新率方案,应集成可编程栅极驱动电路。本文提出了一种薄膜晶体管(TFT)移位寄存器,其输出脉冲只需由使能信号控制。由于输出脉冲的产生可直接调整,无需预先编程,因此可实现各种输出脉冲序列,具有很高的灵活性。该移位寄存器是通过在传统电路中加入六个 TFT 和一个电容器组成的,传统电路向下一级提供一个进位脉冲。通过集成电路强调(SPICE)仿真程序,只需在相应的时序应用使能信号,就能在一帧内产生任意区域内任意行数的栅极脉冲,从而在一个屏幕中实现多种刷新频率。此外,经过验证,与传统移位寄存器相比,额外的 TFT 和电容器仅使功耗增加了 2.1%,几乎可以忽略不计。
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Region-selective shift register by a single output enable signal for a multiple refresh frequency driving scheme

Many low-power technologies have been developed for high-performance displays. One method is to vary the refresh rate according to the input image, where frequencies are reduced over still images and slow-moving videos. To support the variable refresh rate scheme, the programmable gate driver circuit should be integrated. This paper proposes a thin-film transistor (TFT) shift register of which output pulse is simply controlled by an enable signal. Because the output pulse generation is directly adjusted without the previous programming period, various output pulse sequences are possible with the high flexibility. The shift register is composed by adding six TFTs and one capacitor to a conventional circuit that provides a carry pulse to a next stage. The simulation program with integrated circuit emphasis (SPICE) simulation ensures that gate pulses for any numbers of lines in any regions can be generated within one frame only by applying the enable signal at the corresponding timing, resulting in multiple refresh frequencies in a screen. In addition, it is verified that additional TFTs and capacitor contribute to only the negligible increase in power consumption by 2.1%, compared to a conventional shift register.

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来源期刊
Journal of the Society for Information Display
Journal of the Society for Information Display 工程技术-材料科学:综合
CiteScore
4.80
自引率
8.70%
发文量
98
审稿时长
3 months
期刊介绍: The Journal of the Society for Information Display publishes original works dealing with the theory and practice of information display. Coverage includes materials, devices and systems; the underlying chemistry, physics, physiology and psychology; measurement techniques, manufacturing technologies; and all aspects of the interaction between equipment and its users. Review articles are also published in all of these areas. Occasional special issues or sections consist of collections of papers on specific topical areas or collections of full length papers based in part on oral or poster presentations given at SID sponsored conferences.
期刊最新文献
Issue Information Issue Information Enhancing optical output power efficiency in nitride-based green micro light-emitting diodes by sidewall ion implantation Issue Information Issue Information
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