发明名称 PIXEL CIRCUIT, DISPLAY DEVICE, DRIVING METHOD OF PIXEL CIRCUIT, AND DRIVING METHOD OF DISPLAY DEVICE
摘要 A pixel circuit includes a drive transistor that has a gate connected to an input node and a source connected to an output node. The drive transistor supplies a driving current to an electrooptic element via the output node. A sampling transistor is connected between the input node and a signal line and samples an input signal from the signal line, which is retained in a retaining capacitance connected to the input node. The magnitude of the driving current is based on a value of the retained signal. The pixel circuit further includes a compensating circuit which detects a decrease in the driving current attendant on a secular change of the drive transistor from a side of the output node and feeds back a result of the detection to a side of the input node to compensate for the decrease.
申请公布号 US2016042689(A1) 申请公布日期 2016.02.11
申请号 US201514886962 申请日期 2015.10.19
申请人 Sony Corporation 发明人 Uchino Katsuhide;Yamashita Junichi
分类号 G09G3/32 主分类号 G09G3/32
代理机构 代理人
主权项 1. A display device comprising a scanner circuit and a plurality of pixel circuit; each the pixel circuits including: a light emitting element,a drive transistor,a storing capacitor, anda correction circuit; wherein the drive transistor is configured to control a driving current provided for the light emitting element during a light emission period, the driving current being provided through a current path between a power supply line and a ground line according to an image signal provided via a signal line; the correction circuit includes a first transistor and a second transistor, and is configured to provide, in a predetermined period before the light emission period, a current through the drive transistor and the first transistor to the storing capacitance, the first transistor is connected to the drive transistor, and the second transistor is put in a cut-off state during the predetermined period and is put in a conductive state in the light emission period, such that the correction circuit sets a potential of a gate node relative to a current node of the drive transistor during the light emission period to a value depending on both of a characteristic data of the drive transistor and the image signal.
地址 Tokyo JP