Self-Alignment Technologies of Organic Electronic Devices and Its Integrated Panels

Self-alignment (SA) technologies and multiple integration of organic electronic devices are introduced. For obtaining higher device performance, self-alignment technology is effective. For example, SA organic field effect transistor (OFET) can be realized using back surface exposure for gate electrode as a mask and lift-off technique for formation of source/ drain regions. Another self alignment technology under study is formation of emission region in organic light emitting diode (OLED) using ink-jet printing (UP) technique, where ink jet printed dot becomes emission region. In the case of multiple integration technology, face-to-face emission panel named "Dual Drive & Emission Panel (DDE)" with stacked two set OLED with common scan line and two set of data lines and combination of emission and photo detection named "Bi-Function Matrix Panel (Bi-Matrix)" with stacked OLED and organic photodiode (OPD) can be realized. These approaches will be expected for novel application.