TY - JOUR
AU1 - Lee, Taik-Min
AU2 - Hur, Shin
AU3 - Kim, Jae-Hyun
AU4 - Choi, Hyun-Cheol
AB - This paper is unique in that the electro-luminescence (EL) display device is fabricated on a curved surface using the pad-printing method. The precision of the pad-printing process is explored to verify whether it can be used for micro patterning. The minimum pattern size and pattern distortion, which is caused by use of the pad, were tested and simulated. The minimal pattern was found to be 35 µm wide and 2.4 µm thick. Pattern distortion when pad-printing on a flat surface, caused by the deformation of the silicon pad, was less than 5 µm. Numerical analysis shows how to estimate pattern distortion when pad-printing on a curved surface. The proposed EL display device consists of five layers, namely a bottom electrode, dielectric layer, phosphor, transparent electrode and a bus electrode. The ink of each layer was reformulated with solvents and the pad-printing conditions were controlled. A PEN film was used first in order to realize the pad-printing process condition of each layer. Finally, the EL display device was printed onto a dish with a radius of curvature of 80 mm. The luminance was 180 cd m2.
TI - EL device pad-printed on a curved surface
JF - Journal of Micromechanics and Microengineering
DO - 10.1088/0960-1317/20/1/015016
DA - 2010-01-01
UR - https://www.deepdyve.com/lp/iop-publishing/el-device-pad-printed-on-a-curved-surface-uAowPS3G7w
SP - 015016
VL - 20
IS - 1
DP - DeepDyve
ER -