An overview of a wide range of materials and key technologies of touch components TFT Display Module

The touch principle can be divided into resistive, capacitive, and a few other, has its use for the environment and the advantages and disadvantages. From the stackup mode can be divided into the G / G, G / F / F, G / F and OGS, its production processes and processes that are different, but the transparent conductive film is one of the key materials.16x2 oled display
Transparent conductive film material suppliers research and development of composite materials, simple ITO / PET film, Cu / ITO / PET film, Ni-Cu/ITO/PET FILM different materials, the process will be different due to material vary.
Transparent conductive film (ITO) is one of the key materials, the use of rare metals-indium, use the sharp rise in recent years, TFT-LCD and producing mines controlled by a small number of countries, resulting in the number of indium continued to decrease difficult to obtain, prices are likely to continue to rise, causing the cost of ITO increase year by year. Therefore, the study estimated in 2015 ITO usage will be reduced to less than 50%.
"CNT carbon nanotube material (Carbon Nano Tube) is a nanoscale diameter and length and breadth than the graphite tube. Graphite layer may be a single layer or a multilayer curl forming a hollow columnar structure, to change CNT curl direction can exhibit the characteristics of the carbon nanotubes metals, semi-metals, semiconductors, etc.. Although manufacturing costs decreased year by year, but according to current technology, the surface resistance of 500Ω / □ or less To achieve the transmittance will be a problem.7 TFT display module
The optical bandgap of the ZnO-based TCO film ZnO is approximately 3.2 EV, good transparency for visible light. Zn-rich, non-toxic, cheap, easier than ITO etching. However, if the ambient temperature is above 150 ° C, poor electrical stability. The bottleneck of this material point in the process of large area ZnO-based TCO thin films for uniformity than ITO poor, has yet to break through.
PEDOT conductive polymer advantages with with ITO same transmittance and life than the ITO is about 10 times. Another advantage of the PEDOT film formation in the atmosphere and low temperature environment. However, the weather resistance of the conductive polymer than the ITO poor, therefore the material is still technically ongoing research and development.