16-07-2015 дата публикации
Номер: US20150199060A1
Принадлежит:
In a liquid crystal display device, a second substrate has detection electrodes of a touch panel, each of pixels has a pixel electrode and a counter electrode divided into a plurality of blocks. The counter electrodes of the respective blocks are commonly provided for the respective pixels of plural continuous display lines, the counter electrodes of the respective blocks double scanning electrodes of the touch panel, and a driver circuit that applies a counter voltage and a touch panel scanning voltage to the counter electrodes of the respective blocks is provided. The driver circuit sequentially applies the touch panel scanning voltage to the counter electrodes of the respective blocks in plural times, while a drive pulse for displaying an image on a liquid crystal display panel is not varied, and drive frequencies of the respective touch panel scanning voltages are different from each other. 1. A display device , comprising:a first substrate;a second substrate having detection electrodes of a touch panel;a plurality of pixels arrayed in a matrix, each having a pixel electrode and a counter electrode divided into a plurality of blocks; anda driver circuit that applies a counter voltage, a scanning voltage, a video voltage and a touch panel scanning voltage,wherein the divided counter electrodes of the respective blocks are commonly provided on the respective pixels,wherein the divided counter electrodes of the respective blocks are configured to work as scanning electrodes of the touch panel,wherein the driver circuit applies the touch panel scanning voltage to the divided counter electrodes at a time point which is after a delay period from a rising time point of a horizontal synchronizing signal,wherein the horizontal synchronizing signal has a constant frequency,wherein the delay period is different for different horizontal synchronizing signal according as a number of a predetermined delay time.2. The display device according to claim 1 ,wherein the first ...
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