Display device having current-addressed pixels

摘要: A display device has current-addressed pixels, with the currents being supplied by driver circuitry which comprises a transistor (10) for applying charging voltage to switched capacitor arrangement (Ci, S1, S2) arranged selectively charge and discharge (Ci) at predetermined rate voltage. control (Vref) is applied terminal of adjusted depending on threshold ensure that charged irrespectively value This enables an accurately controllable current be provided used drive pixels.