By using the plane structured Organic Light-emitting Diodes (OLED) realize color, a full color 1.9″ passive-matrix OLED has been developed. The display has 128 (×3) ×160 pixels with an equivalent full color pixel size of 240 μm×240 μm, and the size of mono sub-pixel is 190 μm×45 μm. 18 bits gray-scale data was transferred from a PC by a Digital Visual Interface (DVI) interface. Then, the driving circuits realize 262 k color mode display. The dual-scan driving technology was used to prolong the lifetime of the OLED display to 5 000 h at the average luminance of 40 cd/m2, and the power consumption of the display was about 300 mW.