Compactly Designed Organic Complementary D-Type Flip-Flop Circuits Fabricated with Inkjet Printing
Compactly Designed Organic Complementary D-Type Flip-Flop Circuits Fabricated with Inkjet Printing
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采用喷墨印刷制造的紧凑设计有机互补 D 型触发器电路
DOI：
10.1002/aelm.201700208
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
S. Tokito
中科院分区：
文献类型：
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作者：
K. Hayasaka;H. Matsui;Y. Takeda;R. Shiwaku;Y. Tanaka;T. Shiba;D. Kumaki;S. Tokito
近年来，有机薄膜晶体管（OTFT）因其在低成本和大面积印刷电子产品中的潜在应用而受到广泛关注。 D型触发器（D-FF）电路是此类应用中数据处理和存储最重要的逻辑门之一。之前的工作已经报道了基于 NAND 的有机 D-FF 电路。尽管演示的印刷电路在 10 V 下表现出低电压运行，但每个 D-FF 电路需要 34 个 TFT 器件，并且每个 D-FF 电路占用 192 mm2 的面积。本文展示了采用时钟反相器和传输门的紧凑电路设计的喷墨印刷有机 D-FF 电路，并将占用面积和电路性能与基于 NAND 的有机 D-FF 电路进行了比较。紧凑的有机D-FF电路仅需要18个OTFT器件，并且与采用相同工艺制造的基于NAND的有机D-FF电路相比，可以减少60%的面积。此外，紧凑的有机 D-FF 电路表现出比基于 NAND 的 D-FF 电路更短的传播延迟时间。将基于 SPICE 仿真详细讨论缩短延迟时间的机制。这些结果证明了这些紧凑的有机 D-FF 电路在可印刷电子产品中的巨大潜力。
Organic thin‐film transistors (OTFTs) have received significant consideration in recent years for potential deployment in low‐cost and large‐area printed electronics. D‐type flip‐flop (D‐FF) circuits are one of the most important logic gates for data processing and storage in such applications. Previous work has reported on NAND‐based organic D‐FF circuits. Although the demonstrated printed circuits exhibit low voltage operation at 10 V, each D‐FF circuit requires 34 TFT devices and occupies an area of 192 mm2per D‐FF circuit. This paper demonstrates inkjet‐printed organic D‐FF circuits with a compact circuit design using clocked inverters and transmission gates and compares the occupied area and the circuit performance with those of NAND‐based organic D‐FF circuits. The compact organic D‐FF circuits require only 18 OTFT devices, and can use 60% less area than NAND‐based organic D‐FF circuits fabricated by the same process. In addition, the compact organic D‐FF circuits exhibit a shorter propagation delay time than the NAND‐based D‐FF circuits. The mechanism for the shortened delay time will be discussed in detail, based on SPICE simulations. These results demonstrate the high potential of these compact organic D‐FF circuits in printable electronics.