A new gate driver employing linearly sweep signal generated module for high-resolution micro-LED display with line-by-line pulse width modulation driving method

IF 1.7 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of the Society for Information Display Pub Date : 2024-09-02 DOI:10.1002/jsid.2002

Li-Rong Zhang, Xiang-Lin Mei, Zhao-Hua Zhou, Lei Zhou, Chun Liu, Miao Xu, Lei Wang, Wei-Jing Wu, Jun-Biao Peng

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引用次数: 0

Abstract

A new gate driver with metal oxide thin-film transistors (MO-TFTs) has been presented for micro-light-emitting diode (Micro-LED) display. The proposed gate driver employing linearly decreasing sweep signal generated module could realize the line-by-line pulse width modulation (PWM) driving method, which is valuable for application in high-resolution Micro-LED display compared with the conventional driving method employing global sweep signal. A simple Micro-LED pixel circuit including an inverter module driven by the analog PWM method is employed to demonstrate the feasibility of the proposed gate driver. A 10 × 10 green Micro-LED display array has been fabricated with MO-TFTs backplane technology. It is shown that a 10-μs width pulse and linearly scanning sweep signal can be successfully output. Consequently, the pixel circuit array can be driven properly under analog line-by-line PWM driving method.

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采用线性扫描信号生成模块的新型栅极驱动器，用于逐行脉宽调制驱动方法的高分辨率微型 LED 显示器

针对微型发光二极管（Micro-LED）显示屏提出了一种采用金属氧化物薄膜晶体管（MO-TFT）的新型栅极驱动器。所提出的栅极驱动器采用线性递减扫描信号生成模块，可实现逐行脉宽调制（PWM）驱动方法，与采用全局扫描信号的传统驱动方法相比，这种方法在高分辨率 Micro-LED 显示屏中具有重要应用价值。为了证明所提出的栅极驱动器的可行性，我们采用了一个简单的 Micro-LED 像素电路，其中包括一个由模拟 PWM 方法驱动的逆变器模块。利用 MO-TFTs 背板技术制作了一个 10 × 10 绿色 Micro-LED 显示阵列。结果表明，可以成功输出 10μs 宽度的脉冲和线性扫描扫描信号。因此，在模拟逐行 PWM 驱动方法下，像素电路阵列可以正常驱动。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

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

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.