A low power display architecture for organic light emitting diode microdisplays

Abstract

Organic light-emitting diode (OLED) devices offer a very promising alternative to existing flat panel display technologies, such as liquid crystal displays (LCD) that currently dominate the market. OLED displays offer very attractive characteristics, including higher luminous, larger viewing angle, and low-power consumption, over the established LCD technology. The ability to integrate OLED devices on a silicon microchip is one of the most favorable characteristics of this new technology. The primary goal of this research project is to implement a low-power display driver circuit for an OLED microdisplay. The implementation will be chosen based on the outcome of a feasibility study aimed at investigating the various options available for addressing the display and the design requirements imposed by the operation of the OLED. There are three primary design options to be considered: 1 ). Passive Matrix Addressing with sequentially addressed rows/columns, 2). Active Matrix Addressing with sequentially addressed rows/columns and dynamic storage at each pixel, and 3). Active Matrix Addressing with sequentially addressed rows/columns and static storage at each pixel. Each implementation is compared in terms of the overall power consumed in driving the high capacitance row and column lines in the display matrix.