OLED Panel Auxiliary Electrode Voltage Drop Compensation

An auxiliary electrode is introduced as an intermediary component connected between the power line and the organic light emitting layer. This auxiliary electrode compensates for voltage drops by providing an additional current path, thereby maintaining uniform brightness across the display panel without requiring changes to the main power line structure.

The auxiliary electrode is designed with non-uniform resistance distribution along its length, with resistance per unit length varying to match the local current density requirements. This local quality adjustment ensures that voltage drops are compensated precisely where needed, achieving uniform brightness without over-compensation in other regions.

The auxiliary electrode serves as a mediator that provides additional current pathways, allowing the use of lower resistance power lines while maintaining voltage stability. By distributing current through multiple paths, the system achieves both voltage stability and reduced power loss.

The current path is segmented into multiple parallel paths: the main power line and the auxiliary electrode. This segmentation allows the total resistance to be reduced while maintaining voltage stability, as the parallel paths share the current load and reduce overall power loss.

The auxiliary electrode is merged with the existing electrode structure and fabrication process. It is formed in the same layer as other electrodes using the same material deposition and patterning techniques, thereby adding minimal structural complexity while achieving brightness uniformity.

The auxiliary electrode serves multiple functions: it compensates for voltage drops, provides additional current pathways, and maintains uniform brightness. By combining multiple functions into a single component, the overall device complexity is minimized while achieving the desired performance improvement.