DISPLAY DEVICE AND CONTROL METHOD THEREOF Russian patent published in 2012 - IPC G09G3/30 

FIELD: physics.

SUBSTANCE: switching thin-film transistors 111 and 112 are set in conducting state and switching thin-film transistor 113 is set in non-conducting state so as to apply a potential (VDD + Vth), according to a threshold voltage, to the lead of the gate of the control thin-film transistor 110. Further, while the thin-film transistor 112 is in conducting state, the data line Sj potential varies from the reference potential Vpc to the data potential Vdata so as to set the thin-film transistor 110 into conducting state. During that time, current 1a flows, thus potential at the lead of the gate of the thin-film transistor 110 increases. The higher the mobility of carriers in the thin-film transistor 110, the higher the value of change in the potential at the lead of the gate and the lower the current flowing through the organic electroluminescent element 130 during luminescence thereof. Current for which there no effect on neither variation of threshold voltage of the thin-film transistor 110 nor variation of mobility of carriers in the thin-film transistor 110 flows through the organic electroluminescent element 130.

EFFECT: design of an information display device in which there is compensation for variation of both the threshold voltage of the driving element and the mobility of carriers of the driving element by using a programmed voltage driving circuit and a method of controlling the information display device.

14 cl, 15 dwg