MATRIX DISPLAY DEVICE WITH ENERGY RECOVERY CIRCUIT

MATRIX DISPLAY DEVICE WITH ENERGY RECOVERY CIRCUIT

Matrix display device having row electrodes ( 4 ) and column electrodes ( 5 ), an intersection of a row and a column electrode defining a pixel cell ( 1 ) having a pixel cell capacitance ( 8 ), and drive circuits ( 2,3 ). Blind energy used for charging the pixel cell capacitances ( 8 ) when driving...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LOS, REMCO, SEMPEL, ADRIANUS, VOSSEN, FRANSISCUS, J
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
BASIC ELECTRIC ELEMENTS
CRYPTOGRAPHY
DISPLAY
EDUCATION
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
PHYSICS
SEALS
SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:Matrix display device having row electrodes ( 4 ) and column electrodes ( 5 ), an intersection of a row and a column electrode defining a pixel cell ( 1 ) having a pixel cell capacitance ( 8 ), and drive circuits ( 2,3 ). Blind energy used for charging the pixel cell capacitances ( 8 ) when driving the pixel cells ( 1 ) is not dissipated but stored into a buffer capacitor ( 6 ) through an inductor ( 7 ) forming a series inductor-capacitor circuit and subsequently recovered by discharging the buffer capacitor ( 6 ) into the pixel cell capacitances ( 8 ) through a current source ( 13 ). Energy recovery is thus current driven, which allows to control the light reflected or emitted by the pixel cell ( 1 ) in a manner which is less dependent on temperature variations and/or ageing of the device.