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Implementation and Analysis of Charge-Pump Active-Matrix Organic Light-Emitting Diode Display Panel

An organic light-emitting diode (OLED) display panel using a charge-pump (CP) pixel addressing scheme was implemented and shown to be effective for information display applications. The panel luminance was 681 cd/m2 when driven by control signals with an amplitude of 8 V and a common-cathode voltage of 6 V. It was found that the parasitic overlap capacitance between a common electrode and a column bus plays a crucial role in the operation of the CP-OLED display panel. The losses of panel luminance and contrast ratio due to the capacitance could be minimized by optimizing the pixel layout design and fabrication processes.