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OLED Display Fundamentals and Applications by Takatoshi Tsujimura

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8

New OLED Applications

OLED technology has been used for existing applications such as cellular phones, MP3 players, and televisions, but OLED technology also has the potential to penetrate into new applications because.

1. an all-solid device (when blanket encapsulation is used) is suitable for flexible applications;
2. use of a high-transmittance electrode enables transparent displays;
3. a thin display module is suitable for overlapped tiling.

8.1 FLEXIBLE DISPLAY

8.1.1 Flexible Display Applications

There are many flexible display [1–4] technologies reported in the OLED field (Fig. 8.1). With flexibility properties, rollable (Fig. 8.2) or foldable (Fig. 8.3) displays can be fabricated. Also their robust, unbreakable properties may become important for future mobile applications.

Figure 8.1 An example of a flexible display (demonstration at FPD International 2007 by Samsung SDI).

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Figure 8.2 Demonstration of rollability of a flexible display: rolled (upper) and unrolled (lower) display (demonstration at SID2010 by Sony).

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Figure 8.3 An example of a foldable display (demonstration at SID2008 by Samsung Mobile Display).

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8.1.2 Barrier Technology for Flexible Displays

Plastic substrates ...

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