- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
A Pixel Circuit With Wide Data Voltage Range for OLEDoS Microdisplays With High Uniformity
摘要： A new pixel circuit is proposed for the realization of high resolution and high uniformity organic light-emitting diode on silicon (OLEDoS) microdisplays in this article. A compensation scheme is adopted to mitigate the influence of threshold voltage variation of the driving transistor on display uniformity. Furthermore, two coupling capacitors are used to reduce the voltage at the gate terminal of the driving transistor in order to extend the data voltage range. The performance of the proposed pixel circuit is verified in an industrial 0.18-μm CMOS process. Simulation results show that the data voltage of the proposed pixel circuit ranges from 0.5 to 3.12 V, which is up to 4.37× wider than the previously published pixel circuits. The emission current error of the proposed pixel circuit varies from ?2.1% to 2.08%, under the condition of ±5 mV threshold voltage variation for the driving transistor. The maximum emission current error changes from ?10.36% to ?2.62% when the OLED turn-on voltage is increased by 5 to 20 mV due to device aging. Furthermore, the proposed pixel circuit only occupies a layout area of 8.1 μm × 4 μm.
关键词： Aging,high uniformity,compensation,organic light-emitting diode on silicon (OLEDoS),threshold voltage variation
更新于2025-09-16 10:30:52
-
Broadband and high uniformity Y junction optical beam splitter with multimode tapered branch
摘要： A high uniformity and broad bandwidth Y junction optical beam splitter is proposed and analyzed in this paper based on silicon-on-insulator platform. By replacing the uniform branch with the multimode tapered branch, the bandwidth and the power uniformity of two output ports are improved prominently. Furthermore, the sensitivity to fabrication accuracy is reduced by widening the splitting angle. The simulation and the experimental results confirm that the bandwidth is larger than 100nm, the power uniformity of two output ports is enhanced 4 dB, whereas the insertion loss is less than 0.6dB and the return loss is larger than 26dB, respectively.
关键词： Multimode,Beam splitter,Broad bandwidth,High uniformity,Tapered branch
更新于2025-09-04 15:30:14