Electro-optical display having split storage capacitor structure for series capacitance
AssigneePhilips Electronics North America Corporation
InventorsPawan Gogna, Peter J. Janssen
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Abstract
An electro-optic display device having a matrix array of picture elements and a thin film structure of storage capacitors associated with each picture element, the device provided with redundancy in the storage capacitor structure by segmenting one of the capacitor plates into two plates to produce two capacitors in series. Because the segmented plates are all on one level of the thin film structure, no additional masking steps are required.
Claims8
An electro-optic display device comprising one or more picture elements, each picture element comprised of a first pixel electrode 40 and a second facing electrode 36 and an electro-optic medium therebetween, and each picture element having associated row and column electrodes 42, 44 and associated storage capacitor 61, the storage capacitor comprised of parallel plates 62, 64 of conductive material and a dielectric medium 32 therebetween, characterized in that one plate 64 of the storage capacitor is divided into first and second separated segments 64A, 65B, resulting in first and second capacitors in series with each picture element, and one of the first and second segments 64A, 64B is connected to the pixel electrode 40, and the other of the first and second segments 64A, 64B is directly connected to any one of the column or row electrodes 14, 15.
Dependencies are inferred from the claim text.