Driving circuit and method for data drivers in a bi-stable display

A display employs an arrangement of a matrix of pixels (30), and a column driving circuit (10) including an array of fixed level data drivers (30) for generating a drive waveform that is applied to the matrix of pixels (30) during an image update period. A power supply (VPS) for each fixed level dat...

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1. Verfasser: HUITEMA HJALMAR E. A.,ZHOU GUOFU
Format: Patent
Sprache:eng
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Zusammenfassung:A display employs an arrangement of a matrix of pixels (30), and a column driving circuit (10) including an array of fixed level data drivers (30) for generating a drive waveform that is applied to the matrix of pixels (30) during an image update period. A power supply (VPS) for each fixed level data driver (11) is set to a base voltage (V0) during a first phase (P1) of a driving portion (DP) of the image update period, and the power supply (VPS) of each fixed level data driver (11) is switched from the base voltage (V0) to a transitional voltage (V1) in response to a transition from the first phase (P1) of the driving portion (DP) to a second phase (P2) of the driving portion (DP). The base voltage (V0) will either be less than or greater than the transitional voltage (V1).