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An 852×600 pixel OLED-on-silicon color microdisplay using CMOS subthreshold-voltage-scaling current drivers

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10 Author(s)
Levy, G.B. ; Analog/Mixed-Signal/RFIC Design Center, Cadence Design Syst. Inc., Columbia, MD, USA ; Evans, W. ; Ebner, J. ; Farrell, P.
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An 852×600×3-pixel, organic light-emitting diode (OLED)-on-silicon, color microdisplay utilizing a subthreshold-voltage-scaling method is presented. The pixel current is modulated between 250 pA and 25 nA. With a pixel pitch of 5×15 μm2, the display contains 1.5 million individually addressable pixels sampling video signals at a maximum rate of 56.25 MHz, supports 15 video modes, and displays as many as 16 million colors. The 16.28×14.2 mm2 monolithic display is implemented in a commercially available, 0.35-μm, single-poly four-metal 3.3 V/4.0 V CMOS process with the 10 million transistor system consuming 300 mW for PC applications. The SVGA+ active matrix OLED system provides a complete, integrated, analog interface microdisplay solution with minimal external components. DC-coupled RGB inputs with separate external vertical and horizontal synchronization inputs are accepted in accordance with the VESA VSIS standard. A fourth analog input is provided for composite monochrome, compatible with the SMPTE-170 standard.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:37 ,  Issue: 12 )