P‐6.4: The Influence of OLED ELVDD 2.8V on Electricity & Optics

ELVDD provides the anode voltage of OLED. In the OLED pixel circuit, the source electrode of driving TFT is connected to ELVDD, and the drain electrode is connected to the anode of OLED. Most OLED panels of existing mobile phones set the ELVDD voltage to 4.6V.However, some OLED panels of new mobile phones set the ELVDD to 2.8V for energy‐saving purposes. As an important measure to reduce the logic power consumption of OLED display panel, ELVDD 2.8V setting is more and more common in mobile OLED panel design. Based on an OLED mobile phone panel, the comparison test of ELVDD setting 4.6V and 2.8V is carried out.