Patent ID: 6310589
Filing Date: 2001-10-30
Classification: G09G

Abstract:
A driving circuit for driving a matrix of a plurality of organic thin film electroluminescent elements comprising:light-emitting layers made of an organic substance; andsignal electrodes and scanning electrodes at least either of which are transparent, said electrodes holding the light-emitting layers therebetween,wherein said driving circuit comprises:a current source circuit for supplying a direct current driving current to said organic thin film electroluminescent elements in response to a first pulse signal;a pulse generator responsive to receipt of said first pulse signal for outputting a second pulse signal in synchronization with said first pulse signal, a pulse width of said second pulse signal being narrower than a pulse width of said first pulse signal; anda charging circuit which charges a junction capacitance of said organic thin film electroluminescent elements to a predetermined potential responsive to said second pulse signal to shorten a period in which said junction capacitance is charged,wherein a current which is a sum of said driving current and said junction capacitance is supplied to said organic thin film electroluminescent elements to enhance luminance within a period of said first pulse signal.