IMAGE DISPLAY

摘要

A liquid crystal image display comprising differential amplifiers composed of polycrystalline SiTFTs incorporated in buffer (20) for a signal line driver. The image display includes buffer outputting switches (16) for turning off the outputs of the buffers (20) and signal line shunting switches (17) for shorting the input and output terminals of the buffer (20). For the first half of one horizontal period, the signal line shunting switches (17) are held off whereas the buffer outputting switches (16) are held on, to feed signal lines (7) with an image signal voltage selected by gradation selecting switches (3) through the buffers (20). For the second half of the horizontal period, the signal line shunting switches (17) are held on whereas the buffer outputting switches (16) are held off, to feed the signal lines (7) directly with the image signal voltage selected by the gradation selecting switches (3), and the signal lines (7) fed with the equal image signal voltages are shorted to prevent the brightness nonuniformity of vertical streaks, as might otherwise be caused because said buffers (20) have different offset voltages.