LIQUID CRYSTAL DISPLAY DEVICE WITH TOUCH PANEL

摘要

A liquid crystal display device with a touch panel includes: display drive circuits that are disposed respectively at the outsides of the sides opposing to a display region, and that apply sequential scanning signal potentials to scanning signal lines; touch panel drive circuits that are disposed respectively further to the outsides of the display drive circuits, and that apply sequential drive pulses to a plurality of drive electrodes among common electrodes; and switching circuits that are disposed respectively at insides of the display drive circuits, and that switch between applying common electric potentials for controlling the alignment of the liquid crystal composition and applying a touch drive pulse that detects the touching to the display surface.

主权项

1. A liquid crystal display device with a touch panel comprising:
a plurality of scanning signal lines that are extended and apposed so as to be commonly connected to a gate of each pixel transistor of pixels arranged in one direction, in a display region where the pixels are arranged in a matrix shape; common electrodes that are a plurality of electrodes extended so as to horizontally cross the display region in the one direction, and that control an alignment of liquid crystal composition by forming an electric field in combination with pixel electrodes connected to the pixel transistors; detection electrodes that are a plurality of electrodes extended so as to horizontally cross the display region in a different direction from the one direction, and that detect a contact position on a panel; display drive circuits that are disposed respectively at the outsides of the sides opposing the one direction of the display region, and that apply sequential scanning signal potentials to the scanning signal lines; touch panel drive circuits that are disposed respectively at further outsides of the display drive circuits and at the outsides of the sides opposing to the one direction of the display region, and that apply sequential drive pulses to a plurality of drive electrodes among the common electrodes; and switching circuits that are disposed respectively at insides of the display drive circuits and at the outsides of the sides opposing the one direction of the display region, and that switch between applying a common electric potential for controlling the alignment of the liquid crystal composition with respect to the plurality of drive electrodes and applying a touch drive pulse that detects the touching to the display surface.