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公开(公告)号：US20190385525A1
公开(公告)日：2019-12-19
申请号：US15565215
申请日：2017-08-25
发明人： Yufeng Jin , Hongjun Xie
IPC分类号： G09G3/3258
摘要： Disclosed is a method for compensating a pixel driving circuit of an OLED display panel. In the compensation method, a driving transistor is enabled to operate stably in a saturation region for twice, and a threshold voltage of the driving transistor is calculated based on a collected charging voltage and charging time. A pixel driving circuit is compensated by establishing a threshold-voltage compensation table. The compensation method is easy to operate and can significantly improve a detecting speed of a threshold voltage. Moreover, an effect of a voltage-current conversion factor on detecting accuracy of a threshold voltage can be avoided.
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公开(公告)号：US10650744B2
公开(公告)日：2020-05-12
申请号：US15565215
申请日：2017-08-25
发明人： Yufeng Jin , Hongjun Xie
IPC分类号： G09G3/3258 , G09G3/3208 , G09G3/3233
摘要： Disclosed is a method for compensating a pixel driving circuit of an OLED display panel. In the compensation method, a driving transistor is enabled to operate stably in a saturation region for twice, and a threshold voltage of the driving transistor is calculated based on a collected charging voltage and charging time. A pixel driving circuit is compensated by establishing a threshold-voltage compensation table. The compensation method is easy to operate and can significantly improve a detecting speed of a threshold voltage. Moreover, an effect of a voltage-current conversion factor on detecting accuracy of a threshold voltage can be avoided.
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