A passive-matrix OLED (PMOLED) display has an array of 256×64 pixels. The width ofanode tracks is 340 μm, with a gap of 30 μm between the two adjacent anode tracks. The
width of cathode tracks is 300 μm, with a gap of 30 μm between two adjacent cathodetracks.
(a) What is the aperture ratio of this PMOLED display?
(b) What is the apparent luminance (in cd/m2 ) of each pixel required to achieve a display luminance of 100 cd/m2 ?
(c) The power efficiency (in lm/W) as a function of the luminance (in cd/m2 ) of the PMOLED display was measured and results are plotted in Fig. 1. What is the power consumption of the PMOLED at a display luminance of 100 cd/m2 ? (Consider only the power that is required for emitting light.)
(d) PMOLED displays are usually small (up to 3" typically). To fabricate large displays,active-matrix OLED (AMOLED) displays are adopted. What are the benefits of AMOLED displays? What is the main disadvantage of AMOLED displays?