Touch method and device for distinguishing true touch

Abstract

This invention discloses a touch device for distinguishing true touch. The touch device includes a touch screen, a driving unit, and a sensing unit. The touch screen has a plurality of first conductive lines and second conductive lines where the first and second conductive lines are electrically isolated from each other and stacked to form a plurality of coupling intersections. The driving unit operatively drives the first conductive lines. The sensing unit determines the first conductive lines touched or approached by a plurality of objects and also determines the coupling intersections touched or approached by the objects when the first conductive lines touched or approached by the objects are driven. By doing so, the true touch and the false touch caused by the objects can be determined and distinguished.

Description

technical field [0001] The present invention relates to a touch control method and a touch control device, in particular to a touch control method and a touch control device for distinguishing touch. Background technique [0002] see figure 1 As shown, it is a schematic diagram of multi-finger touch operation and capacitance image of a conventional touch panel. The conventional touch panel 110 has a plurality of first wires 112 and a plurality of second wires 114 , and the first wires 112 and the second wires 114 are electrically isolated from each other and overlapped. When a sensing signal (not shown) is applied to any first wire 112, the mutual coupling overlapping points of the first wire 112 and all the second wires 114 will form a plurality of capacitive couplings, whereby all the first wires 114 can pass through The electrical characteristics of each mutual coupling point can be judged by the current or voltage on the two wires 114. In this way, by sequentially pro...

AI Technical Summary

Problems solved by technology

However, when the touch panel 110 has two touch points P 1 with P 2 , then not only at the touch point P 1 ,P 2 Will cause current or voltage to change, at the other two mutual coupling points G 1 with G 2 It will also cause a change in current or voltage (that is, the formation of a so-called false touch, or "ghost point"). Therefore, the P 1 ,P 2 will result in four mutually coupled overlapping points of the touch panel 110 (for example: (X 1 , Y 4 ), (X 3 , Y 6 ), (X 1 , Y 6 ), (X 3 , Y 4 )) and its current or voltage changes in adjacent mutual coupling points, so the interpretation of the touch position will cause confusion

Images