FIELD

The subject matter herein relates to human-computer interaction, specifically a method for locating a touched position, a locating device, and a touch display device.

BACKGROUND

Types and functions of display screens are many. In particular, touch display screens are widely used in various display devices. The touch display screen includes a plurality of sensing areas for sensing signals. When the touch display screen is touched, a touched sensing area is defined as a touch area, and the signal sensed by the sensing area is defined as a touch signal. The touch screen often needs to recognize the touched position of the touch signal on the touch screen to respond. In order to locate and recognize the touch position, it is necessary to perform group selection for all touch signals.

That is, all the touch signals are classified to obtain at least one group signal, and then the coordinates of the physical center of the touch area corresponding to all the touch signals in each group on the panel are calculated to locate the touched position.

In the existing methods for locating touch positions, the touch areas corresponding to the touch signals are divided into different groups by using the distance between the touch areas and the values of the touch signals, and the groups are selected by returning to the starting point of each group many times and expanding outward. This kind of group selection methods is time-consuming, repetitious, and multiple returns takes up more memory space for storage.

Therefore, there is room for improvement in the art.

