Flexenable Limited

Jeremy Hills

Stephan Riedel

Tiziano Agostinelli

Shane Norval

Aleksandra Rankov

Boon Hean Pui

Charlotte Harrison

Burag Yaglioglu

David Gammie

Ian Horne

We describe a method of reducing artefacts in an image displayed by an active matrix electro-optic display and display driver, the electro-optic display driver comprising a plurality of active matrix pixel drivers each driving a respective pixel of the electro-optic display, each active matrix pixel driver having an associated storage capacitor coupled to a common backplane connection of the display driver, pixels of the electro-optic display having a common pixel electrode, the method comprising: driving the electro-optic display with a null frame during a power-down procedure of the display.

Display systems

A pixel driver circuit having only three conductive layers is described. The pixel driver circuit comprises a vertical driver transistor () spanning said three conductive layers, wherein a first of said conductive layers () on a first side of a middle conductive layer () provides a first source-drain connection () of said driver transistor, wherein a third of said conductive layers () on the opposite side of said middle conductive layer to said first conductive layer provides a gate connection () for said vertical driver transistor, and wherein said middle conductive layer provides a second source-drain connection () for said vertical driver transistor. The circuit also comprises a lateral switching transistor () with source-drain connections () in one of said three conductive layers. A dielectric layer () is provided between said first and second conductive layers and between said second and third conductive layers, and wherein semiconductor material () is provided spanning said first and second source-drain connections of said vertical driver transistor. A pixel display element () is coupled to said first source-drain connection of said vertical driver transistor.

Pixel driver circuit

Growing community of inventors

St. Neots, United Kingdom

Jeremy Hills