Patent ID: 8860668
Filing Date: 2014-10-14
Classification: G06F

Abstract:
1. A display device comprising: a display panel; a sensing electrode that is disposed in a matrix pattern and outputs a sensing signal upon receiving an external stimulus; a calculator that divides the display panel into a plurality of detection regions based on a coordinate of a first stimuli group determined from a sensing signal output by the sensing electrode upon receiving a first stimulus; and a position determiner for determining a single touch position from multiple stimuli detected at different times, by determining a coordinate of a second stimuli group determined from a sensing signal output by the sensing electrode upon receiving a second stimulus, and by designating the coordinate of a second stimuli group as a stimulus position instead of the coordinate of a first stimuli group, only if the second stimulus is located in a selection detection region within a predetermined detection time after the first stimulus, the selection detection region being a predetermined one of the plurality of detection regions, wherein the multiple stimuli are not detected simultaneously, wherein the calculator divides the display panel into: a first detection region including the coordinate of the first stimuli group, a second detection region having an inside boundary that coincides with a boundary of the first detection region and an outside boundary including a rectangle larger than the first detection region, and a third detection region corresponding to the display panel except for the first and second detection regions, wherein the selection detection region corresponds to the second detection region, wherein each of the first and second stimuli groups comprise at least one sensing electrode, and the calculator calculates a coordinate of the first stimuli group or the second stimuli group by using an average coordinate of the plurality of sensing electrodes outputting a sensing signal if the plurality of sensing electrodes outputs the sensing signal by the first stimulus or the second stimulus, wherein the first detection region has a minimum point including a coordinate X formed by deducting a first difference value from a coordinate X of the first stimuli group and a coordinate Y formed by deducting a second difference value from a coordinate Y of the first stimuli group, and a maximum point including a coordinate X formed by adding a third difference value to the coordinate X of the first stimuli group and a coordinate Y formed by adding a fourth difference value to the coordinate Y of the first stimuli group, as diagonally positioned corners of a rectangular region, and wherein the external side of the second detection region has a minimum point including a coordinate X formed by deducting a fifth difference value larger than the first difference value from the coordinate X of the first stimuli group and a coordinate Y formed by deducting a sixth difference value larger than the second difference value from the coordinate Y of the first stimuli group, and a maximum point including a coordinate X formed by adding a seventh difference value larger than the third difference value to the coordinate X of the first stimuli group and a coordinate Y formed by adding an eighth difference value larger than the fourth difference value to the coordinate Y of the first stimuli group, as diagonally positioned corners of a rectangular region.