White-Light Emitting OLED Display Based on Partially Conjugated Si-PPV Copolymer

OLED technology has improved to the point where it is now possible to envision developing OLEDs as a low cost FPD. In order to realize this, significant advances have to be made in device efficiency, lifetime at high brightness, high throughput fabrication, and the generation of illumination quality white light as new light source. Currently, these devices are being developed commercially, however, for military application, high temperature performance, and long term reliability/stability remain an issue. New Span Opto-technology Inc. proposes a novel white-light emitting OLED display with excellent thermal stability. We will use the partially conjugated Si-PPV as an emitting material. The highly efficient bright white emitting of the device will be realized from the control of the conjugation length of Si-PPVs. In order to achieve our goal, we will find out the most suitable conjugation length and derivatives of Si-PPV with various organic functional groups in the phenyl ring through the quantum chemistry simulation method. This simulation will reduce the time consuming synthetic works. We will demonstrate a bright single-layer white OLED to be realized by spin-coating. This device is the best way to satisfy the high temerpature operation requirement and to achieve the required long term reliability.