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US 2020/0402469 A1Published application
Apparatus and methods for driving displays
AssigneeE Ink Corporation
InventorsKenneth R. CROUNSE, Teck Ping SIM, Karl Raymond AMUNDSON, Zdzislaw Jan SZYMBORSKI
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Abstract
An apparatus for driving an electro-optic display may comprise a first switch designed to supply a voltage to the electro-optic display during a first driving phase, a second switch designed to control the voltage during a second driving phase and a resistor coupled to the first and second switches for controlling the rate of decay of the voltage during the second driving phase.
Claims10
An apparatus for driving an electro-optic display comprising:
- a first switch configured to engage and supply a voltage to the electro-optic display during a first driving phase;
- a diode having one end connected to a resistor and another end connected to a ground;
- a second switch coupled to the diode and the resistor, the second switch configured to switch between a first position and a second position, wherein at the first position the second switch engage and connects the diode and the resistor to the electro-optic display for discharging the voltage, and at the second position the switch disconnects the diode and the resistor from the electro-optic display.
An apparatus for driving an electro-optic display comprising:
- a resistor connected to a capacitor in a parallel configuration, the resistor and the capacitor being coupled to the electro-optic display;
- a first switch connected to a first voltage source and configured to engage and drive the electro-optic display at a first voltage level during a first driving phase;
- and
- a second switch connected to a second voltage source and configured to engage and drive the electro-optic display at a second voltage level during a second driving phase;
- wherein the first and second switches are configured to disconnected from the respective first and second voltage sources during a third driving phase to discharging the second voltage through the resistor and the capacitor.
2 more elements
Dependencies are inferred from the claim text.