SENSOR SWITCH OF ELECTRIC LUMINESCENT RADIATION Russian patent published in 2010 - IPC H03K17/96 

FIELD: electric engineering.

SUBSTANCE: sensor switch of EL radiation includes the first electrodes, one second electrode arranged opposite to the first electrodes, and EL layers, every of which is arranged between according one of the first electrodes and the second electrodes. Exciter of light radiation supplies voltage of excitation between the first and second electrodes that makes EL layers radiate colour. Generator of timing signal generates timing signal to control exciter of light radiation, as a result of which supply of excitation voltage is stopped with previously identified ranges. Units for detection of contact are provided for each first electrode. Each unit for contact detection includes a feedback circuit for current supply to according first electrode, as a result of which potentials of the first and second electrode become balanced, and contact of human body is detected with according first electrode on the basis of feedback circuit operation, while excitation voltage supply is interrupted.

EFFECT: improved accuracy of detection of contact to one of electrodes.

2 cl, 5 dwg