Silicon backplane design for OLED-on-silicon microdisplay

• Main Author: Wang, Ying
• Other Authors: Sun Xiaowei
• Format: Theses and Dissertations
• Language: English
• Published: 2011
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
• Online Access: https://hdl.handle.net/10356/43518
• Institution: Nanyang Technological University

Microdisplay technology has attracted the attention as projection displays and near to eye (NTE) displays due to its advantages of high resolution, tiny physical display size and low power consumption. Combined with complementary metal oxide semiconductor (CMOS) technology, several display technologies are employed to implement a microdisplay application, such as liquid crystal or electroluminescent display. Compared with liquid crystal on silicon (LCoS) technology, organic light emitting diode (OLED) microdisplay technology is more attractive as the NTE display because of its simple optics, high luminance, fast response and ultra low power dissipation. With CMOS technology, complex circuitry is integrated into the silicon backplane to realize compact OLED-on-Silicon microdisplay. The research work is to exploit and develop efficient circuit architecture of the silicon backplane for OLED-on-Silicon microdisplay. The design of the silicon backplane must fulfill the characteristics of the display technology. The luminance of OLEDs is proportion to the driving current density, so proper current signals are expected to be generated for the OLEDs. The challenge mainly lies in the extremely small current for low level gray scale. Accurate current signal processing technologies are employed in the design of the silicon backplane.