Optoelectronic Device With Monotonic Conductivity Electrodes

The patent applies local quality by creating electrodes with spatially varying conductivity properties. The first electrode has higher conductivity near the first connection and lower conductivity away from it, while the second electrode has higher conductivity near the second connection and lower conductivity away from it. This non-uniform conductivity distribution compensates for lateral voltage drops and achieves homogeneous luminance across the device area.

The patent implements parameter changes by varying the conductivity parameter of the electrodes across different regions. Specifically, the conductivity of the first electrode decreases with distance from the first connection, and the conductivity of the second electrode decreases with distance from the second connection. This parameter variation resolves the contradiction between manufacturing simplicity and luminance uniformity.

The patent merges the function of the electrode with the function of the resistance adjustment layer. Instead of adding a separate resistance adjustment layer on top of uniform electrodes, the non-uniform conductivity is directly incorporated into the electrode structure itself. This combining approach achieves luminance homogenization while avoiding the additional manufacturing complexity of separate adjustment layers.

The electrode serves multiple functions: it provides electrical connection, transports charge carriers, and simultaneously acts as the resistance adjustment element. By making the electrode itself have position-dependent conductivity, the device eliminates the need for separate resistance adjustment layers, thereby simplifying manufacturing while achieving luminance uniformity.