OPTL: Robust and Area-Efficient Pass Gate Logic for Organic Transistors

In this paper, we propose the organic pass transistor logic (OPTL), an organic thin-film transistor (OTFT) circuit design based on pass transistor logic (PTL). The proposed PTL circuits reduce the required number of transistors, leading to high area efficiency. The PTL also employs strong p-type transistors, avoiding the use of weak n-type transistors as much as possible. The p-type-based circuits guarantee high stability. Two different PTL circuits are discussed and compared. A full adder, the most widely used logic circuit, is used as an example to confirm the operation of a PTL-based arithmetic circuit via simulations and test-chip measurements.