Patent ID: 8339384
Filing Date: 2012-12-25
Classification: G09G

Abstract:
1. A display driving apparatus for driving, via a signal line, a pixel having a light emitting device and a drive device, a current path of the drive device having a first end connected to the light emitting device, the apparatus comprising: a data acquisition circuit that is connected to one end of the signal line and that (i) causes, by setting one of a value of a potential at the one end of the signal line and a current value of a current to be flown to the signal line, a current to flow through the current path of the drive device and the signal line with a potential at a second end of the current path of the drive device being set so as not to cause the current to flow to the light emitting device, and (ii) acquires, in accordance with the set value, one of the current value of the current flowing to the signal line and the value of the potential at the one end of the signal line; and a correction operation circuit that acquires a threshold voltage and a current amplification factor of the drive device based on the acquired one of the current value and the value of the potential which are acquired by the data acquisition circuit and the set one of the value of the potential and the current value; wherein acquisition of the threshold voltage and the current amplification factor by the correction operation circuit is executed once; and wherein after execution of the acquisition of the threshold voltage and the current amplification factor, acquisition of the threshold voltage based on the acquired current amplification factor by the correction operation circuit is repeatedly executed at every timing set based on a drive state of the pixel.