Nanoimprinting for displaysR&D product
Nanoimprinting is a technique used to form nanostructures on base material surfaces. A variety of optical functions can be expressed according to the shape of the nanostructure (Figure 1).
Making use of film imprinting techniques (Figure 2), a type of nanoimprinting, we have been engaged in "anti-reflection film" product development. This is essential for OLED display, whose market has grown rapidly in recent years (Figure 3).
By utilizing the "structural birefringence phenomenon*," it is possible to manufacture optimal anti-reflection film that supports "True Black," "wide viewing angles," and "flexibility," trends in OLED displays.
- With this phenomenon, the structure is such that the refractive index periodically changes. The refractive index changes according to the direction when the size of the period (cycle) is about the same as the wavelength of the light.
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