Abstract: In a liquid crystal display module which includes a first display panel and a second display panel, it is possible to reduce a voltage drop attributed to the line resistance of a drive voltage supplied to the second display panel without increasing the cost. For this purpose, the first display panel includes a power source circuit which generates a drive voltage, the second display panel includes a scanning line drive circuit which drives scanning lines of the second display panel, a power source line of the first display panel, a power source line to which the drive voltage generated by the power source circuit is supplied and a variable resistance circuit which is connected with the power source line. The scanning line drive circuit drives the scanning lines of the second display panel in response to a drive voltage outputted from the variable resistance circuit.