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

被引：0

作者：

Zhang, Li-Rong ^{[1
]}

Mei, Xiang-Lin ^{[1
,2
]}

Zhou, Zhao-Hua ^{[1
]}

Zhou, Lei ^{[3
]}

Liu, Chun ^{[1
]}

Xu, Miao ^{[1
]}

Wang, Lei ^{[1
]}

Wu, Wei-Jing ^{[1
]}

Peng, Jun-Biao ^{[1
]}

机构：

[1] South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Peoples R China

[2] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou, Peoples R China

[3] New Vis Optoelect Technol Co Ltd, Guangzhou, Peoples R China

来源：

JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY | 2024年

关键词：

analog PWM driving; gate driver; line-by-line driving method; metal oxide (MO); micro-light-emitting diode (micro-LED); thin-film transistor (TFT);

D O I：

10.1002/jsid.2002

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 x 10 green Micro-LED display array has been fabricated with MO-TFTs backplane technology. It is shown that a 10-mu s 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. We have presented a line-by-line pulse width modulation (PWM) driving method, which includes the corresponding pixel circuit and gate driver, for high-resolution Micro-LED displays. In comparison to conventional driving methods, this approach simplifies the driving framework, resembling AMOLED and TFT-LCD driving technologies. image

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页码：716 / 725

页数：10