ADAPTIVE LOW POWER VCOM MODE

摘要

Embodiments described herein include a display device having a capacitive sensing device, a processing system and a method for providing an adaptive low-power mode. In one embodiment, the method includes generating a reference voltage with one or more reference voltage generators while a display device is in a grayscale mode. The method also includes driving subpixels in the grayscale mode with the reference voltage. The method further includes shutting down the one or more reference voltage generators and driving subpixels in a low power, binary mode with a VCOM voltage based on positive and negative supply rails.

主权项

1. A processing system for operating an input device, comprising:
one or more reference voltage generators configured to drive subpixels when a display device is in a grayscale mode; positive and negative supply rails configured to drive subpixels when the display device is in a low power, binary mode and the reference voltage generators are shut down; and a VCOM control circuit configured to adjust a VCOM voltage based on the positive and negative supply rails when the reference voltage generators are shut down.