Patent ID: 9665226
Date: 2017-05-30
CPC Classifications: G06F

Claim:
1. A touch display substrate, comprising: a substrate including a display region and a non-display region; a plurality of common electrode blocks spaced apart from each other, which are arranged in an M×N array with M rows and N columns, and are operable as touch electrodes, wherein M and N are positive integers; a plurality of wirings, each of which is electrically connected with a corresponding one of the plurality of common electrode blocks; a vertical shift circuit arranged in the non-display region and electrically connected with the plurality of wirings, wherein the vertical shift circuit includes a plurality of cascaded vertical shift circuit units, and each of the plurality of vertical shift circuit units is connected with wirings corresponding to a column of common electrode blocks, and is configured to sequentially output touch driving signals to the column of common electrode blocks; and a controlling IC connected with the vertical shift circuit and configured to output a touch driving signal to the vertical shift circuit; wherein, the plurality of common electrode blocks are divided into n groups of common electrode blocks by columns, and the controlling IC is configured to apply scan pulse signals of different frequencies to different groups of common electrode blocks in each of a plurality of touch scanning time periods, each of the n groups of common electrode blocks receives scan pulse signals of different frequencies from the controlling IC in different touch scanning time periods.