LIQUID CRYSTAL DISPLAY USING DEPLETION-MODE TRANSISTORS

摘要

Methods and devices employing charge removal circuitry are provided to reduce or eliminate artifacts due to a bias voltage remaining on an electronic display after the display is turned off. In one example, a method may include connecting a pixel electrode of a display to ground through charge removal circuitry while the display is off (e.g., using depletion-mode transistors that are active when gates of the depletion-mode transistors are provided a ground voltage). When a corresponding common electrode is also connected to ground, a voltage difference between the pixel electrode and common electrode may be reduced or eliminated, preventing a bias voltage from causing display artifacts in the pixel.

主权项

1. A method for reducing visual artifacts in a display, comprising:
turning off the display; and in response to turning off the display:
connecting a pixel electrode of the pixel of the display to ground; andmaintaining the connection of the pixel electrode of the pixel of the display to ground while the display is off; wherein a common electrode of the pixel of the display has a voltage of substantially ground when the display is turned off.