Liquid crystal display with integrated touch screen panel

摘要

An LCD with an integrated touch screen panel includes a first substrate having a plurality of pixels formed thereon, wherein each pixel of the plurality of pixels is provided with a thin film transistor and a pixel electrode. A second substrate faces the first substrate and has a plurality of common electrodes formed inside thereof. The plurality of common electrodes is arranged in a first direction to correspond to the plurality of pixels. A plurality of sensing electrodes is outside of the second substrate and arranged in a second direction intersecting the first direction. A liquid crystal layer is between the first and the second substrates. A common electrode driver sequentially supplies a driving signal to the common electrodes and supplies a compensation signal having a phase opposite to the driving signal to the common electrodes.

主权项

1. A liquid crystal display (LCD) with an integrated touch screen panel, comprising:
a first substrate having a plurality of pixels formed thereon, wherein each pixel of the plurality of pixels is provided with a thin film transistor and a pixel electrode; a second substrate facing the first substrate, the second substrate having a plurality of spaced common electrodes formed inside thereof, wherein the plurality of common electrodes is arranged in a first direction to correspond to the plurality of pixels and are not connected to one another; a plurality of sensing electrodes outside of the second substrate and arranged in a second direction intersecting the first direction; a liquid crystal layer between the first and the second substrates; and a common electrode driver that sequentially supplies a driving signal to the common electrodes and supplies a compensation signal having a phase opposite to the driving signal to the common electrodes, wherein: each common electrode is coupled to a different row of pixels, and the common electrode driver sequentially supplies driving signals to the common electrodes in a frame period, the common electrode driver supplying a driving signal with a compensation signal to each common electrode only once within the frame period.