The present invention disclosed herein relates to an electronic paper display device and a method of fabricating the same, and more particularly, to an electronic paper display device having improved bonding characteristics between a lower substrate and an upper substrate, and a method of fabricating the same.
Electronic paper is a display having a thin and flexible form like paper and has received attention as an advanced reflective-type display satisfying visibility comparable to print on paper, flexibility, and low power consumption. Electronic paper may minimize power consumption by using bistability that may preserve an original image for a prolonged period of time, even in a state in which voltage is removed.
In an electronic paper display, particles exhibiting electrophoretic characteristics by an electric field applied under a constant voltage are disposed between an upper substrate maintaining a predetermined spacing and a lower substrate having partition walls formed thereon. The partition walls are formed on the lower substrate by using a photolithography method or a printing method.
Bonding of the upper substrate and the lower substrate in the electronic paper display may be performed by two methods. First, there is a method of bonding the partition walls formed on the lower substrate after coating an entire surface of the upper substrate with an adhesive and second, there is a method of bonding the upper substrate after selectively coating the partition walls formed on the lower substrate with an adhesive.