An active approach of tft matrix controlling for liquid crystal cladding based beam steering device

Liu，Hongjun; Lou，Fei; Qiu，Chengfeng

10.1002/sdtp.14364

2021

0097-966X

2168-0159

Digest of Technical Papers - SID International Symposium

52

S1

31

Currently, Light Detection and Ranging (LiDAR) system has been widely used in various applications. However, the commercialized solution can hardly meet the rising demands, especially in autonomous driving vehicles. To further improve the laser scanning rate, life-time and possibly lowering the cost, the main technology trend is through replacing the mechanical rotational parts with solid structures. Among those new emerging technology approaches, liquid-crystal-based beam steering device is one of the promising routes. In this work, for the first time in reports, the physics of such liquid-crystal-based devices are thoroughly explained through numerical simulation and modeling. In addition, a new device architecture with thin film transistors (TFTs) matrix and its driving methods are also introduced. With the improved driving electrodes (using TFTs panel), a wide beam steering angle (±42˚) can be achieved. Meanwhile, the device remains as a reprogrammable piece even after fabrication, leaving enough room for further upgrades in terms of driving algorithm.

Driving algorithm LiDAR beam steering Liquid crystal layer cladding Thin Film Transistors (TFTs) matrix

第一

英语

EI

20213710880605

Automobile manufacture ; Automobile steering equipment ; Optical radar ; Thin film transistors

Automobiles:662.1 ; Automobile and Smaller Vehicle Components:662.4 ; Semiconductor Devices and Integrated Circuits:714.2 ; Radar Systems and Equipment:716.2

2-s2.0-85114510728

Scopus

Southern University of Science and Technology,China

Liu，Hongjun,Lou，Fei,Qiu，Chengfeng. An active approach of tft matrix controlling for liquid crystal cladding based beam steering device[C],2021:31.