Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 18, 2010
Patent Application Number
11550031
Date Filed
October 17, 2006
Patent Primary Examiner
Patent abstract
A brightness adjustment circuit for an electroluminescent display is provided. The brightness adjustment circuit is electrically connected to an electroluminescent panel and a power supply. The brightness adjustment circuit provides a feedback voltage to the power supply. The power supply provides a working voltage to the electroluminescent panel in response to the feedback voltage. The brightness adjustment circuit includes a circuit module and a switch or a circuit module and a voltage supply unit. The feedback voltage is modulated by operating the switch in accordance with a control signal or by a control voltage provided by a voltage supply unit.
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