Study on the TFT Light Sensing Pixel Array with Differential Signal Extracting Function
| Autor: | Huang, Ping-Ju, 黃品儒 |
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| Rok vydání: | 2019 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 In recent years, with the rapid development of artificial intelligence (AI) technology, a variety of applications that receive information from the image are booming, such as biometric, medical imaging, crack detection, and various types of identification. Among light sensing technology, reading the tiny signal is always one of the most difficult things for imaging system. Owing to the poor SNR and the fact that the area to receive image is not large enough in current imaging system, there is loss of information. By taking the advantage of the fact that TFT can be easily applied to the manufacture of large area products and the concept of reading differential signal, we propose a light sensing pixel circuit with differential signal extracting function in this dissertation. The circuit can be divided into capacitor line type and diode line type. To overcome the difficulties of extending line type circuits into arrays, we further propose the differential sensing pixel arrays of triangular ring type and square ring type by using the concept of diode connection. They successfully acquire the differential signal and the common signal concurrently. In this dissertation, the operation of proposed differential sensing pixel array is explained in detail, and the related issues are discussed and solved. Furthermore, the feasibility of the differential sensing pixel array is verified by HSPICE simulation. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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