Silicon‐based 0.69‐inch AMOEL microdisplay with integrated driver circuits

Abstract Silicon‐based 0.69‐inch AMOEL microdisplay with integrated driver and timing controller circuits for microdisplay applications has been developed using 0.35 μm 1‐poly 4‐metal standard CMOS process with 5 V CMOS devices and CMP (Chemical Mechanical Polishing) technology. To reduce the large data programming time consumed in a conventional current programming pixel circuit technique and to achieve uniform display, de‐amplifying current mirror pixel circuit and the current‐mode data driver circuit with threshold roltage compensation are proposed. The proposed current‐mode data driver circuit is inherently immune to the ground‐bouncing effect. The Monte‐Carlo simulation results show that the proposed current‐mode data driver circuit has channel‐to‐channel non‐uniformity of less than ±0.6 LSB under ±70 mV threshold voltage variaions for both NMOS and PMOS transistors, which gives very good display uniformity.