MUMBAI, India, June 24 -- Intellectual Property India has published a patent application (202618060213 A) filed by E Ink Corporation on May 12, 2026, for Methods For Measuring Electrical Properties Of Electro-Optic Displays.
Inventors include Amundson, Karl Raymond; Sim, Teck Ping; Mccreary, Michael D.; Lu, Yi; and Ladavac, Kosta Filed On.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: A method for driving an electro-optic display comprising a layer of electro-optic material disposed between a common electrode and a backplane, the backplane including an array of pixel electrodes, wherein each pixel electrode is coupled to a pixel transistor, wherein a display controller circuit applies waveforms to the array of pixel electrodes by applying one or more time-dependent voltages between the common electrode and the array of pixel electrodes via the pixel transistors, the method for driving comprising: concurrently activating pixel transistors associated with a first portion of pixel electrodes of the array of pixel electrodes; applying a first voltage to the first portion of pixel electrodes; injecting measurement waveforms from a signal generation circuit through a current measurement circuit coupled between the signal generation circuit and the common electrode; measuring a first current flowing through the current measurement circuit based on the measurement waveforms; determining a first impedance of the electro-optic material in proximity to the first portion of pixel electrodes based on the first current flowing through the current measurement circuit and the time-dependent voltages applied to each pixel electrode of the first portion of pixel electrodes during the first measurement waveforms; selecting first driving waveforms to apply to each pixel electrode of the first portion of pixel electrodes based on the first impedance of the electro-optic material in proximity to the first portion of pixel electrodes; and applying the first driving waveforms to the first portion of pixel electrodes, wherein the first driving waveforms comprise time-dependent voltages sufficient to change an optical state of the electro-optic display in proximity to the first portion of pixel electrodes.
Disclaimer: Curated by HT Syndication.
