Patent ID: 8810555

Claim:
A method of driving an electroluminescent segment, the electroluminescent segment comprising a phosphor layer disposed between a first electrode and a second electrode, the electroluminescent segment being associated with a parasitic resistance, the method comprising: applying a series of first pulses to the first electrode, the first pulses alternating in polarity; and applying a series of second pulses to the second electrode for illuminating the electroluminescent segment, each of the second pulses corresponding to a first pulse and having an opposite polarity to the corresponding first pulse, the width of each of the second pulses being based on the parasitic resistance associated with the electroluminescent segment; wherein the width of each of the second pulses controls a charge time of the electroluminescent segment, a maximum charge time being equal to: 3 ⁢ ⁢ γ ⁢ ⁢ A ρ ⁢ ⁢ A + R p wherein γ is the electric permittivity of the electroluminescent segment, A is the area of the electroluminescent segment, ρ is the electrical resistivity of the electroluminescent segment and R ρ is the parasitic resistance.