TY - GEN
T1 - A Novel Mini-LED Backlit Driving Circuit Using PWM Mechanism with VTHand VSSI-R Rise Compensation
AU - Ke, Cheng Han
AU - Lin, Yu Sheng
AU - Lin, Chih Lung
N1 - Funding Information:
This work was partly assisted by the Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan, Taiwan, and the Ministry of Science and Technology of Taiwan under Projects of MOST 110-2218-E-006-025-MBK. As well, AU Optronics Corporation is appreciated for its technical and financial assistance.
Publisher Copyright:
© 2022 International Society of Functional Thin Film Materals & Devices (FTFMD).
PY - 2022
Y1 - 2022
N2 - A 9T3C driving circuit with the PWM mechanism is proposed, which is applied to the mini-LED backlit module in LCD. The proposed circuit eliminates the effects of variations in threshold voltage VTH) of driving thin- film transistor (TFT) and current-resistance (I-R) rises in power lines to generate stable driving current for mini-LED. In addition, VTH variations of the control TFT are also compensated to control the emission time precisely. Simulation results show that the relative current error rates are under 4.5% and verify the grayscale display capability. Hence, the proposed circuit, of which feasibility is confirmed, has the capability of acting as a mini-LED backlit circuit in the LCD application.
AB - A 9T3C driving circuit with the PWM mechanism is proposed, which is applied to the mini-LED backlit module in LCD. The proposed circuit eliminates the effects of variations in threshold voltage VTH) of driving thin- film transistor (TFT) and current-resistance (I-R) rises in power lines to generate stable driving current for mini-LED. In addition, VTH variations of the control TFT are also compensated to control the emission time precisely. Simulation results show that the relative current error rates are under 4.5% and verify the grayscale display capability. Hence, the proposed circuit, of which feasibility is confirmed, has the capability of acting as a mini-LED backlit circuit in the LCD application.
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U2 - 10.23919/AM-FPD54920.2022.9851295
DO - 10.23919/AM-FPD54920.2022.9851295
M3 - Conference contribution
AN - SCOPUS:85137815307
T3 - Proceedings of AM-FPD 2022 - 29th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials
SP - 25
EP - 28
BT - Proceedings of AM-FPD 2022 - 29th International Workshop on Active-Matrix Flatpanel Displays and Devices
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 29th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2022
Y2 - 5 July 2022 through 8 July 2022
ER -