Driver circuitry for touchscreen , touchscreen chips and terminal device for vehicle

Abstract

A driver circuitry for touchscreen , touchscreen chips and terminal device for vehicle. The touchscreen includes multiple transmitter electrodes. The driver circuitry for touchscreen includes a first voltage domain circuit and a second voltage domain circuit, with the second voltage domain circuit connected to the first voltage domain circuit and the emitter electrode. The first voltage domain circuit is used to generate and output the first reference voltage and the first sine wave signal. The second voltage domain circuit amplifies the first reference voltage by a first multiple to generate a second reference voltage. It then applies proportional amplification to the first sinusoidal signal based on the second reference voltage, thereby generating and outputting a second sinusoidal signal. This second sinusoidal signal drives the emitter electrode, with its amplitude exceeding that of the first sinusoidal signal.

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