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A single driver chip for the 132times64-pixel passive-matrix OLED panel is presented. The developed driver chip has a 64-step gray scale control using PWM method and two-step voltage pre-charge technology to pre-charge the OLED pixels. It consists of a digital controller, a SRAM as display data memory, a DC-DC voltage converter, reference current generators, a pre-charge voltage generator, 64 common...
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