Capacitance detection device and detection method of a touch sensor

Abstract

The invention provides a touch sensor capacitance detection device and a detection method thereof. The capacitance detection device comprises a touch sensor, a liquid crystal display panel, a first power supply and a second power supply, the touch sensor is provided with a line ITO (indium tin oxide) graphic, a row ITO graphic, a line IC (integrated circuit) and a row IC, the line IC is connected with the line ITO graphic, the row IC is connected with the row ITO graphic, the liquid crystal display panel is positioned above the ITO graphics and comprises an upper substrate, an ITO electrode, a lower substrate and a liquid crystal, the ITO electrode is positioned at the bottom of the upper substrate, the liquid crystal is clamped between the upper substrate and the lower substrate, one end of the first power supply is connected to the ITO electrode, the other end of the first power supply is connected to the line IC, one end of the second power supply is connected to the ITO electrode, and the other end of the second power supply is connected to the row IC. The specific positions of defects of the ITO graphics can be detected in advance after each ITO manufacture procedure is finished, and the change of each area capacitance value can be directly detected, so that uniformity of the capacitance of the whole touch sensor can be detected.

Description

technical field [0001] The invention relates to a capacitance detection device for a touch sensor and a detection method thereof. Background technique [0002] A touch sensor (Touch Sensor) generally refers to a touch conductive glass (ITO Glass) coated with an ITO conductive layer, or a touch conductive film (ITO Film). Common materials for touch sensors include glass and plastic film PET. In touch technology, including resistive and capacitive, touch sensing is performed through conductive media such as ITO Glass or ITO Film. Glass (ITO Glass) or touch conductive film (ITO Film) are called TIO patterns, so they are called touch sensors (Touch Sensor). [0003] The detection of the existing touch sensor (Touch Sensor) is to energize the IC after all the manufacturing processes are completed, and judge the position of the defect according to the output waveform. [0004] like figure 1 As shown, the touch sensor (Touch Sensor) includes a row ITO pattern 11, a column TIO pa...

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Problems solved by technology

[0004] like figure 1 As shown, the touch sensor (Touch Sensor) includes a row ITO pattern 11, a column TIO pattern 12, a row IC 20 connected with the row ITO pattern 11, and a column IC 30 connected with the column ITO pattern 12, by connecting the row IC 10 and The column IC 20 is energized to detect the position of the waveform break defect of the row ITO pattern 11 and the column ITO pattern 12 in the touch sensor, but this method is not conducive to early detection of problems, and when the pattern of the touch sensor is a single-layer ITO structure, it cannot be accurately Locating the specific location where the defect occurs

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