We report on a TFT degradation encountered in short channel a-IGZO TFTs under high applied power condition leading to self-heating. Negative shift was observed in the initial stage of stress period followed by positive shift with severe degradation. To understand the causes of this phenomenon in depth, trap density-of-states were measured by photo-excited charge-collection spectroscopy and time dependent recovery of stressed device samples was also studied. As a result, we found that the combination of hot carrier effect and self-heating in channel was responsible for the degradation.Index Terms-amorphous InGaZnO (a-IGZO), thin-film transistor, self-heating effect, hot carrier effect, density of states. 0741-3106 (c)

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While recent research has shown that holographic displays can represent photorealistic 3D holograms in real time, the difficulty in acquiring high-quality real-world holograms has limited the realization of holographic streaming systems. Incoherent holographic cameras, which record holograms under daylight conditions, are suitable candidates for real-world acquisition, as they prevent the safety issues associated with the use of lasers; however, these cameras are hindered by severe noise due to the optical imperfections of such systems. In this work, we develop a deep learning-based incoherent holographic camera system that can deliver visually enhanced holograms in real time. A neural network filters the noise in the captured holograms, maintaining a complex-valued hologram format throughout the whole process. Enabled by the computational efficiency of the proposed filtering strategy, we demonstrate a holographic streaming system integrating a holographic camera and holographic display, with the aim of developing the ultimate holographic ecosystem of the future.

Integral imaging (or called integral photography) is an attractive three-dimensional display method because of its many advantages over other three-dimensional display methods. However, the thickness of the displayed threedimensional image which can be expressed is limited by various optical parameters of the system and is relatively small. In this paper, we propose a method to increase the thickness of the displayed three-dimensional image without severe resolution degradation by adopting a birefringent material and a dynamic polarizer. We explain the principle of the proposed method and verify it experimentally.