Pixel driving circuit, method for driving the same, shift register, display panel and display device

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United States of America Patent

PATENT NO 9990887
APP PUB NO 20180033371A1
SERIAL NO

15511651

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Abstract

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A pixel driving circuit is provided. The pixel driving circuit includes a driving transistor (M1), a storage capacitor (Cs) and a data writing unit. The data writing unit is configured to receive an nth-row scanning signal (Vscan (n)) and apply the data voltage (Vdata) to the gate electrode of the driving transistor (M1) in the case that the nth-row scanning signal (Vscan (n)) is valid. The pixel driving circuit further includes: a reverse control unit, receiving an (n−2)th-row scanning signal (Vscan (n−2)) and connected to the cathode of the OLED, and configured to control the cathode of the OLED to receive the (n−2)th-row scanning signal (Vscan (n−2)) in the case that the (n−2)th-row scanning signal (Vscan (n−2)) is valid. A voltage of the (n−2)th-row scanning signal (Vscan (n−2)) is greater than the driving voltage (Vdd), and n is an integer greater than 2.

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Patent Owner(s)

Patent OwnerAddress
BOE TECHNOLOGY GROUP CO LTDNO 10 JIUXIANQIAO RD CHAOYANG DISTRICT BEIJING 100015
HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO LTDXINZHAN INDUSTRIAL PARK HEFEI ANHUI 230012

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Peng Beijing, CN 449 2483
Zhang, Xinxia Beijing, CN 32 60

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