Flexible TFT used for flexible display back electrode and preparation technology thereof

Abstract

The invention provides a flexible TFT used for a flexible display back electrode and a preparation technology thereof. Multiple units composed of gate electrodes, source electrodes and drain electrodes and filled by metal are manufactured on a flexible substrate, and carbon nanotubes contacted with the source electrodes and the drain electrodes are manufactured; then an insulating layer pattern which completely covers the carbon nanotubes and does not completely cover the source electrodes, the drain electrodes and the gate electrodes is manufactured, and the gate electrode jump wires and an insulating layer thin-film with through holes are prepared; a conductive thin-film, which fills the through holes and is contacted with the drain electrodes and solidified, is manufactured by using conductive ink; and the conductive thin-film is cut along the units so that multiple pixel electrode units are formed. A conventional flexible substrate preparation technology, which is complex, expensive and time-consuming, can be substituted so that production efficiency is enhanced and production cost is reduced. A carbon nanotube layer is prepared via spray printing without the requirement for a high-temperature working environment so that contraction and bending of the flexible base material caused by heating are not caused.

Description

technical field [0001] The invention relates to a flexible TFT back plate and a manufacturing method thereof, in particular to a flexible TFT used for a flexible display back electrode and a manufacturing process thereof. Background technique [0002] The most common liquid crystal display is like the display panel of a calculator. Its image elements are directly driven by voltage. When controlling one unit, it will not affect other units. When the number of pixels increases to a large number such as millions, this This approach appears to be impractical. The problem does seem to be solved if the number of connecting wires can be reduced to thousands by arranging the pixels in rows and columns: all pixels in a column are driven by a positive potential, and all pixels in a row are driven by Driven by a negative potential, the pixel at the intersection of the row and the column will have the maximum voltage and be switched. However, this method still has a defect, that is, a...

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Problems solved by technology

[0007] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a flexible TFT for flexible display back electrodes and its preparation process, which is used to solve the problem of making carbon nanotube array graphics in the prior art. It makes the process complicated and cumbersome, and solves the problem of high precision and low error tolerance in the prior art

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