In AMOLED displays, the OLED anode is frequently reset to ensure that black regions in the display have low light emission. However, anode resetting has the unwanted side effect of slowing low luminance pixel response. This disclosure describes techniques to maintain the darkness of black regions of AMOLED displays while ensuring rapid pixel response. An anode initialization voltage bias is defined as the voltage at the source terminal of the transistor that effects the resetting of the OLED anode. The anode initialization voltage bias is adapted, or, alternatively, made to electrically float, based on the display brightness level such that dark pixels can rapidly respond to light emission demands. The OLED anode maintains a voltage just below its light emitting threshold voltage such that it can rapidly respond to sudden spikes in light emission demands while also maintaining the darkness of black pixels.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.