倍周波・ブロック制御サンプリング信号発生回路を用いた低消費電力低温poly-Si TFT-LCDデータドライバIC

概要

論文の詳細を見る
Low-temperature poly-Si TFTs have lower mobility and a higher threshold voltage than crystallized Si transistors. An integrated data-driver using low-temperature poly-Si TFTs consumes a great deal of power if it is formed using conventional circuits. We have developed an integrated data-driver that uses low-temperature poly-Si TFTs that produce a data-sampling frequency twice as high as the clock frequency. The shift registers in the data-driver are divided into many blocks, and each is driven by an intermittent clock. We investigated the relation between power consumption and the number of divisions to optimize the operating conditions. The optimum number of divisions was found to be eight stages/block. The power consumption of the circuit we fabricated, which generates sampling signals, was decreased to only 16% that of a conventional circuit.
社団法人映像情報メディア学会の論文
2000-01-20