This publication describes systems and techniques to dynamically control the scan signals of an active-matrix organic light-emitting diode (AMOLED) display in portable electronic devices. Displays in portable electronic devices, such as smartphones, include tens of thousands of pixels. Scan signals in the display control the brightness and color of individual pixels. A leading source of power consumption in AMOLED displays, however, is the parasitic capacitance in the scan lines that carry the scan signals. As the frame rate of AMOLED displays has increased, the frequency of scan signals and the associated parasitic capacitance has also increased. This publication discloses a portable electronic device that can dynamically control the number of pulses in scan signals to reduce power consumption without degrading image quality.

Creative Commons License

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