Patent ID: 8624865
Filing Date: 2014-01-07
Classification: G06F

Abstract:
1. A device for improving a detection accuracy of a touch point on a touch panel, wherein the touch panel is a substantial rectangle orderly defined by a first X side, a first Y side, a second X side, and a second Y side, and has a detection lay er and a transparent substrate with the same substantial rectangle shape, where the detection layer is transparent and conductive and located above the transparent substrate, comprising: a detection source having a first detection signal source and a second detection signal source; a plurality of first X external conducting wires and a plurality of second X external conducting wires respectively and simultaneously electrically coupled to or separated from the first X side and the second X side of the touch panel, wherein when the first X external conducting wires and the second X conducting wires respectively and simultaneously electrically coupled to the first X side and the second X side of the touch panel, both the first X side and the second X side of the touch panel receive a first detection signal of the first detection signal source simultaneously so that the first X side and the second X side are substantially the same in potential, causing the first X external conducting wires and the second X conducting wires to respectively generate a first current and a second current; a plurality of first Y conducting wires and a plurality of second Y external conducting wires respectively and simultaneously electrically coupled to or separated from the first Y side and the second Y side of the touch panel, wherein when the first Y external conducting wires and the second Y external conducting wires respectively and simultaneously electrically coupled to the first Y side and the second Y side, both the first Y side and the second Y side of the touch panel receive a second detection signal of the second detection signal source simultaneously so that the first Y side and the second Y side are substantially equal in potential, causing the first Y external conducting wires and the second Y external conducting wires to respectively generate a third current and a fourth current; a current measurement unit respectively measuring the first currents, the second currents, the third currents, and the fourth currents of the first X external conducting wires, the second X external conducting wires, the first Y external conducting wires, and the second Y external conducting wires before the touch point is touched and when the touch point is touched; a current calculation unit respectively summing the first currents, the second currents, the third currents, and the fourth currents of the first X external conducting wires, the second X external conducting wires, the first Y external conducting wires, and the second Y external conducting wires before the touch point is touched and also when the touch point is touched; and a coordinate determination unit determining an x coordinate and a y coordinate of a location of the touch point according to the first currents, the second currents, the third currents, and the fourth currents before the touch point is touched and when the touch point is touched.