Touch screen display device and method for controlling the same

摘要

A display device includes a first insulating substrate, a plurality of sensing lines extending in a first direction on the first insulating substrate and disposed at predetermined intervals thereon, a second insulating substrate facing the first insulating substrate, a plurality of sensing spacers disposed on the second insulating substrate and operable to make electrical contact with corresponding sensing lines in response to an external pressure applied thereto, and a sensing controller that detects the resistance of a contact closed loop formed by at least two sensor contacts making contact with a pair of corresponding sensing lines and determines the position of the contacted sensing lines in the first direction from the resistance detected.

主权项

1. A display device, comprising:
a first insulating substrate including a display area and a peripheral area surrounding the display area; a plurality of sensing lines extending exclusively in a first direction on the first insulating substrate and disposed at predetermined intervals thereon, the plurality of sensing lines being disposed on the display area; a second insulating substrate facing the first insulating substrate; a plurality of sensing spacers formed on the second insulating substrate; a common electrode formed on the plurality of sensing spacers and configured to make electrical contact with corresponding sensing lines in response to an external pressure applied thereto so as to create segments of sensing lines having a touch resistance; a plurality of gap spacers formed on areas of the second insulating substrate where portions of the common electrode have been completely removed; and a sensing controller configured to detect a resistance between two sensing lines when the two sensing lines are electrically connected via the common electrode formed on the plurality of sensing spacers, wherein a first end of each sensing line of the plurality of sensing lines is connected to the sensing controller, and a second end of each sensing line of the plurality of sensing lines is electrically connected to other second ends via a connection line so as to create a reference resistance, and wherein the sensing controller determines a position of a contact in the first direction by comparing touch resistance between the two segments of the sensing lines when the external pressure is applied with the reference resistance between the same two sensing lines when no external pressure is applied.