Date

Place

[14-4]
15:15 ~ 15:30
Title:Novel Driving Voltage Optimization Scheme for Avoiding Image Sticking in ADSDS TFT-LCDs
Ming Zhu, Chengtan Zhao, Qian Jia, Xin Gu, Xi Xi, Jikai Yao, and Teruaki Suzuki (BOE Tech. Group Co., Ltd., China)
Abstract: In this work, we adopted a novel scheme for setting the driving voltage aiming to make the optimization process more efficient and to avoid the image sticking issues in ADSDS TFT-LCDs. Soon after the checker pattern had been switched to the solid gray pattern, by observing how the panel reacted on the Vcom change, the potential image sticking became visible, and then we could know the fact that the driving voltage had not been balanced well. It even could teach us the clues for the better settings. If the original image sticking nature is positive, increasing the Vcom voltage would intensify the original DC charge accumulation, which leads to the enhancement of positive image sticking. On the contrary, decreasing the Vcom voltage would cancel the residual DC. Finally we do the IS evaluation with the ��Vcenter changes of 0.000 V, 0.025 V, 0.062 V and 0.100 V to testify our speculation. The split of ��Vcenter =0.025 V showed the best IS performance. The experimental results were consistent with our speculation. So that, this is an effective guide which simplifies the optimization process of the driving voltage setting for improvement of image sticking.
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