Affiliation: | 1. Semiconductor Energy Laboratory, Co., Ltd., , Atsugi‐shi, Kanagawa, 243‐0036 Japan;2. Advanced Film Device Inc, , Tsuga‐machi, Tochigi, 328‐0114 Japan;3. Sharp Corporation, , Tenri‐shi, Nara, 632‐8567 Japan |
Abstract: | We developed a high‐performance 3.4‐in. flexible active‐matrix organic light‐emitting diode (AMOLED) display with remarkably high resolution using an oxide semiconductor in a backplane, by applying our transfer technology that utilizes metal separation layers. Using this panel, we also fabricated a prototype of a side‐roll display for mobile uses. In these AMOLED displays, a white OLED combined with a color filter was used in order to achieve remarkably high resolution. For the white OLED, a tandem structure in which a phosphorescent emission unit and a fluorescent emission unit are serially connected with an intermediate layer sandwiched between the emission units was employed. Furthermore, revolutionary technologies that enable a reduction in power consumption in both the phosphorescent and fluorescent emission units were introduced to the white tandem OLED. |