MINIMIZING DARK CURRENT IN OLED DISPLAY USING MODIFIED GAMMA NETWORK

摘要

The current drivers of an emissive display device such as an OLED display are shut off to have minimum drain current when sub-pixel current is measured, in order to minimize dark current during sub-pixel current measurement. The current drivers in the sub-pixels not under test are biased in such a manner as to reduce their leakage current to a minimum. Therefore, the signal to noise ratio between the OLED sub- pixel current and the panel dark current can be maximized.