CIRCUIT AND METHOD FOR COMPENSATING OF EMITTING DIODE

A circuit and method for compensating a light emitting diode is provided to prevent voltage drop due to parasitic capacitor and a conductive resistor when an organic light emitting diode is turned on. At least one light emitting diode is turned on or off in accordance with a control signal. A compen...

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Bibliographic Details
Main Authors SEO, JONG GO, KIM, SUNG IL, YEOM, JAE HYUN, KIM, DU IL
Format Patent
LanguageEnglish
Published 31.01.2008
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CRYPTOGRAPHY
DISPLAY
EDUCATION
PHYSICS
SEALS
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Summary:A circuit and method for compensating a light emitting diode is provided to prevent voltage drop due to parasitic capacitor and a conductive resistor when an organic light emitting diode is turned on. At least one light emitting diode is turned on or off in accordance with a control signal. A compensation circuit(30) is provided on a front end of the light emitting diode to supply a current corresponding to the voltage previously charged in a charge device to the light emitting diode when the light emitting diode is turned on in accordance with the control signal. An A/D converter(20) is supplied with the voltage to be applied to the light emitting diode to convert the voltage into a sampling voltage. A controller detects the voltage within a detection time to transmit it to the A/D converter and supplies the sampling voltage to apply the sampling voltage to both ends of the light emitting diode while the light emitting diode is turned off.
Bibliography:Application Number: KR20060071532