Touching control panel
A touch panel and control terminal technology, applied in the direction of instruments, electrical digital data processing, electrical components, etc., can solve the problem of not knowing whether the pixel Pa has been touched, reducing user convenience, and the photosensitive element PD cannot feel Light source current and other issues
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[0032] Please refer to Figure 2. FIG. 2 is a schematic diagram of a pixel Pb of the touch panel of the present invention. As shown in the figure, the pixel Pb is similar to the pixel Pa, and the same parts will not be repeated here. The difference is that the pixel Pb adds a variable capacitor Cv to the second terminal of the switch SW. One terminal of the variable capacitor Cv is coupled to the second terminal of the switch SW, and the other terminal is coupled to a common terminal Vcom (that is, the common terminal carries a voltage Vcom). And when the pixel Pb is touched, the capacitance value of the variable capacitor Cv will change, thus also affecting the magnitude of the potential Va. In this way, when the pixel Pb is not touched, the photosensitive element PD will generate a current I to affect the potential Va; when the pixel is touched, the photosensitive element PD will not generate a current I but the capacitance value of the variable capacitor Cv will also change...
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