Addressing transistor

C.M. Li, Addressable transistor chip for conducting assays. Pat W02005095938 (2005). 

Fig. 7. Schematic layout of addressable liquid crystal (LC) panel (a) plane view, (b) side view, (c) section through transistor element, and (d) TFT ia part of...

OFETs constructed on a silicon wafer do not lake advantage of one of the main interest of organic materials, namely the possibility of building electronic devices on plastic substrates. A second important drawback of the silicon-based structure is the difficulty to individually address the gale of transistors built on the same wafer, which would prevent the achievement of integrated circuits. 

The addressing of nanoelectronic assemblies metal-molecule (nanocluster)-metal with device-like functions, such as rectifiers, switches, or transistors requires a source and a drain, and one or more localized electronic levels. The roles of source and drain (both as working electrodes WEI and WE2) may be represented by the tip of an STM, combined with an appropriate substrate or, alternatively, a pair of nanoelectrodes see Fig. 3. 

Finally, a transistor-heated hotplate will be described (Sect. 4.4), which offers the advantage of lower power consumption, since there is no additional power transistor needed on the chip. Moreover, a transistor hotplate can be digitally controlled and addressed so that new operation modes can be realized (Sect. 4.5). The integration of the transistor hotplate with accompanying, mostly digital circuitry will be described in Sect. 6.3. 

P. G. LeComber and W. E. Spear, The Development of the a-Si H Field-Effect Transistor and Its Possible Applications D. G. Ast, a-Si H FET-Addressed LCD Panel S. Kaneko, Solid-State Image Sensor M. Matsumura, Charge-Coupled Devices M. A. Bosch, Optical Recording A. D Amico and G. Fortmato, Ambient Sensors H. Kukimoto, Amorphous Light-Emitting Devices R. J. Phelan, Jr., Fast Detectors and Modulators J. I. Pankove, Hybrid Structures... 

To produce display panels it is necessary to address a large array of pixels. This can be achieved in two basic ways, either by multiplexing or by using a matrix arrangement of transistors. 

In the electronics indnstry, a Pentinm compnter chip has hundreds of millions of transistors and only a hundred pins in and out. If each transistor had to be addressed individually, it would be impossible to have such a chip. Microfluidic systems are similarly easy to control n fluid lines can be controlled by 21og n control hues. Additionally, the pressure to actuate a valve depends on the width of the control line, so by choosing our pressure carefully, one thinner fluid line can be closed while the wider fluid lines remain open due to insufficient pressure. This idea has been used to develop microfluidic systems that can screen enzymatic libraries and perform in vitro transcription translation of DNA to protein in approximately 30 minutes. 

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