Capacitive touch screen and touch device with same

Abstract

The invention provides a capacitive touch screen which comprises a transparent base plate, a first conducting array and a second conducting array. The first conducting array is arranged on the transparent base plate and comprises a plurality of drive components for providing drive signals, and the drive components are of hexagon. The second conducing array has a scheduled angle with the first conducting array and comprises a plurality of receiving components for receiving the drive signals provided by the plurality of drive components. The receiving components comprise bodies and a plurality of cantilever portions extending outward perpendicularly from the bodies, and a scheduled distance is arranged between the adjacent cantilever portions. The invention further provides a touch device with the capacitive touch screen. The shapes of the drive components and the receiving components are changed, the distance between the receiving components and the drive components is enlarged, and therefore mutual capacitance variation is improved, and induction sensitivity and linearity are improved.

Description

technical field [0001] The invention relates to the technical field of touch control, in particular to an improved capacitive touch screen and a touch device with the capacitive touch screen. Background technique [0002] The touch screen has been widely used in various electronic products due to its small mechanical loss and small size. Common touch screens have self-capacitance and mutual-capacitance printed circuit board structures. Self-capacitance can only achieve single-point touch, if double-point touch will produce "ghost points". Therefore, the application of the mutual capacitance printed circuit board structure is more extensive. [0003] figure 1 It is a plan view of an existing double-layer mutual capacitance printed circuit board structure. The horizontal black bar is the capacitive signal detection terminal 200' on the top layer, and the vertical direction is the excitation signal supply terminal 100', and the two are perpendicular to each other. When the...

AI Technical Summary

Problems solved by technology

[0004] There is such a problem in the arrangement of the signal detection end and the excitation signal supply end of the existing mutual capacitive touch screen: when the touch object (such as a finger) is between the two signal detection ends, or when only close to one of the excitation signal supply ends, Another excitation signal supply end will only have a slight induction, so the induction signal will not form a stable and accurate linear change, resulting in positioning errors

Although the cost of double-layer mutual capacitive touch screen is lower than that of touch panel with four-layer or three-layer circuit structure, it still cannot meet the price requirements of users

Although the cost of a single-layer mutual capacitive touch screen is very low, the output capacitance of the capacitive sensor changes very little, and there are stray capacitances in it, and the stray capacitance will change with many factors such as temperature, position, and internal and external electric field distribution. Interfering or even submerging the measured capacitance signal, making it impossible to sense the touch and locate the touch point

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