METHOD AND APPARATUS TO SUPPORT VARIOUS SPEEDS OF LCD DRIVER

Charge pump circuitry comprises a voltage for generating a first regulated voltage. A low drop out regulator generates a second regulated voltage responsive to the first regulated voltage. A charge pump voltage generation circuit generates a voltage. First and second resistor strings are responsive...

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Bibliographische Detailangaben
Hauptverfasser:	PIASECKI DOUGLAS, DAVID THOMAS S, CHOWDHURY GOLAM R, BAR FARRIS
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CALCULATING COMPUTING COUNTING CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC DIGITAL DATA PROCESSING PHYSICS SEALS
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Beschreibung
Zusammenfassung:	Charge pump circuitry comprises a voltage for generating a first regulated voltage. A low drop out regulator generates a second regulated voltage responsive to the first regulated voltage. A charge pump voltage generation circuit generates a voltage. First and second resistor strings are responsive to the generated voltage. The first resistor string provides a first plurality of bias voltages to an LCD responsive to the voltage in a first mode of operation and the second resistor string provides faster charging and discharging of the connected LCD elements responsive to a second mode of operation.