Electrowetting pixel with adjustable capacitance

A display device, comprising:

• a support plate;
• a plurality of pixel walls over the support plate, the plurality of pixel walls being associated with an electrowetting pixel;
• a pixel electrode over the support plate;
• a variable capacitor beneath the pixel electrode, the variable capacitor being electrically connected to the pixel electrode;
• and
• a controller configured to:
• apply a driving voltage to the pixel electrode for a time duration according to a drive scheme of the controller,
• determine a control voltage associated with the time duration, and
• apply the control voltage to the variable capacitor to set a capacitance value of the variable capacitor.

A display device, comprising:

• a support plate;
• a plurality of pixel walls over the support plate, the plurality of pixel walls being associated with an electrowetting pixel;
• a variable storage capacitor beneath the electrowetting pixel;
• and
• a controller configured to:
• determine a control voltage associated with a mode of operation of the controller, and
• apply the control voltage to the variable storage capacitor to set a capacitance value of the variable storage capacitor.