Abstract
A clothing-type wearable display can be utilized in fashion, bio-healthcare, and safety industries as well as smart textiles for the internet of things (IoTs) and wearable devices. In response to this trend, we demonstrate a textile display that can endure the active movements of a human body. It can be applied to any kind of textile, and is durable against conditions such as rain, sweat, and washing. As a key technology for realizing the multi-directional wrinkle-able textile display, we fabricated a stress-lowering textile platform with an ultrathin planarization layer replicated from the flat surface of glass. An elastomeric strain buffer for reducing mechanical stress is also inserted into the textile platform. Here, organic light-emitting diodes (OLEDs) with red, green and blue color, thin film transistors (TFTs) fabricated at a low temperature below 150 °C, and a washable encapsulation layer blocking both gas and liquid were demonstrated on the textile platform.
Highlights
Wearable displays are likely to become a core part of mobile, wearable and internet of things (IoTs) devices, becoming a key technology of the fourth industrial revolution in the 21st century
Poly-vinyl alcohol (PVA) was used as the sacrificial layer, SU-8 as the ultrathin planarization layer, and an Si-base elastomeric room temperature vulcanizing (RTV) material was used as the strain buffer
The reason SU-8 was selected as the planarization layer was that ultrathin SU-8 has high flexibility but no stretchability
Summary
Wearable displays are likely to become a core part of mobile, wearable and internet of things (IoTs) devices, becoming a key technology of the fourth industrial revolution in the 21st century. The information display is the most efficient and intuitive communication device between a human and an electronic device, it is very useful when it is applied into a wearable device. Textiles have the advantages of both high flexibility and durability based on a woven structure. The textile-based wearable display can have both functionality and esthetic value, and it can be incorporated into many practical applications, such as smart fashion, a stage costume, a dress, curtains, tablecloths, and automobile inner walls. A number of information and communication technology (ICT) devices have been converted to be more human-centered technologies. Continuing this trend, textile displays can be a growth engine for the global wearable market
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