Abstract: A signal line driver is used for a liquid crystal display device including a matrix array of 230.times.720 pixels arranged in a predetermined color order for each row, 230 scanning lines for selecting the row of the pixels, and 720 signal lines for setting the potentials of the pixels of the selected row. The signal line driver has three bus lines for receiving color video signals of three primary colors.

Abstract: A liquid crystal apparatus in which an anisotropic conductive layer made of organic resin containing several electrically conductive particles having substantially identical particle sizes is disposed between lead electrodes of a liquid crystal device and the lead electrodes of a drive circuit board, thermocompression bonding being applied to make the electrically conductive particles in direct contact with both lead electrodes to allow both lead electrodes to be electrically connected with each other. Further, at least one of the lead electrodes of a common electrode in the liquid crystal device and of the circuit board corresponding to the common electrode includes a number of separated electrodes that are spaced apart, and the pitches and widths of the separated electrodes are in the range of .+-.30% around the average values for pitch and width for the separated electrodes.