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随着有源矩阵平板显示器尺寸的增大,这些器件的成品率会迅速降低,这已成为生产大尺寸有源矩阵显示器的主要问题。但日本 GTC 公司设计的冗余多晶硅薄膜晶体管(TFT)扫描电路有望提高成品率达6倍而不会影响显示器的性能。有源矩阵显示器的性能优于无源显示器的原因是:在每个象素上都装有一个 TFT 驱动器,使其能开关每一个象素。每个象素上均增加一个开关晶体管则会导致成品率的降低,但是,由于整个成品率是由驱动器的成品率与象素成品率的乘积决定的,提高成品率的典型
As the size of active matrix flat panel displays increases, the yield of these devices can rapidly decrease, which has become a major issue in the production of large size active matrix displays. But Japan’s GTC company designed redundant polysilicon thin film transistor (TFT) scanning circuit is expected to improve the yield of 6 times without affecting the performance of the display. The reason that active matrix displays outperform passive displays is that each pixel has a TFT driver that enables each pixel to be switched. The addition of a switching transistor to each pixel leads to a reduction in yield, but since the overall yield is determined by the product of the driver yield and the pixel yield, the typical yield increase