灰度
发光二极管
LED显示屏
像素
脉冲宽度调制
计算机科学
功能(生物学)
人工智能
计算机视觉
光电子学
电气工程
材料科学
工程类
电压
进化生物学
生物
操作系统
作者
Chun Liu,Zhongbao Zhou,Lei Zhou,L Zhang,Miao Xu,Lei Wang,Weijing Wu,Junbiao Peng
出处
期刊:Engineering research express
[IOP Publishing]
日期:2024-03-08
标识
DOI:10.1088/2631-8695/ad31ea
摘要
Abstract This paper presents a new analog pulse width modulation (PWM) micro light-emitting diode
(LED) pixel circuit with a shaping function. The rising/falling time of PWM signal generated by the proposed pixel circuit can be greatly reduced to improve the low grayscale display quality of micro-LED. Metal oxide thin film transistors with the top-gate (TG) coplanar structure are used to realize the proposed pixel circuit on the glass substrate. It is shown that the pulse width of micro-LED current can be linearly modulated by the data voltage.
Furthermore, the measured rising time and falling time of the PWM signal are 15.6 μs and 25.5 μs, respectively, which are much smaller than that of the PWM signal in the conventional analog PWM pixel circuits.
科研通智能强力驱动
Strongly Powered by AbleSci AI