Capacitive touchscreens and touchmonitors

Abstract

The invention provides a capacitive touch screen and a touch display. The capacitive touch screen comprises a substrate and a capacitance sensor. The capacitance sensor comprises a plurality of first electrodes and a plurality of second electrodes; the first electrodes are arranged in a first direction; the second electrodes are arranged in a second direction; the first electrodes and the second electrodes cross each other and are insulated; an adjacent area in which each first electrode and each second electrode cross each other form a sensing unit; the sensing units do not superpose; the first electrodes and / or the second electrodes in at least one sensing unit extend to the adjacent sensing units and generate mutual capacitance with the second electrodes or the first electrodes in the adjacent sensing units. The sensor sensing units in various sizes are applicable to the capacitive touch screen and the touch display, and sensing linearity and precision of the sensor in the capacitive touch screen can be improved.

Description

technical field [0001] The invention relates to touch screen technology, in particular to a capacitive touch screen and a touch display. Background technique [0002] With the continuous development of electronic technology, capacitive touch screens are more and more widely used in various electronic products. The capacitive touch screen has the advantages of high light transmittance, wear resistance, temperature change resistance and multi-touch support, replacing the traditional key-type input method and promoting the development of electronic products in the direction of large-screen, multi-functional and intelligent. The main part to realize the function of capacitive screen is the Indium Tin Oxide (ITO) sensor, which is mainly divided into single-layer ITO sensor and multi-layer ITO sensor from the structure, and the single-layer ITO sensor is mainly divided into bridge type and multi-point With its low thickness, high production yield and fewer production processes, i...

AI Technical Summary

Problems solved by technology

For example, when a finger slides on the touch screen, if the contact is always in one sensing unit, the mutual inductance capacitance between the driving electrode and the sensing electrode in the adjacent sensing unit does not change accordingly, and thus the sliding action cannot be detected. , which reduces the linearity and accuracy of the sensor's response to the contact action, especially when the size of the sensing unit is greater than 7*7mm 2 When the contact area is small, the linearity and accuracy are severely reduced. If the contact area is small, normal contact scribing or gesture detection cannot be performed.

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