LED and LCD display driving circuit supporting integrated touch key function

The invention discloses an LED and LCD display driving circuit supporting an integrated touch key function, the LED and LCD display driving circuit supporting the integrated touch key function comprises an LED, an LCD driving chip and an LED, driving pins of the LCD driving chip are two poles and are marked as SEG and COM, and each SEG pin is composed of a touch driving circuit, an LED/LCD drivingcircuit, a filter circuit and a function switching switch. A logic control circuit of the LED and LCD driving chip is connected with a touch driving circuit and an LED/LCD driving circuit which are connected in parallel, the touch driving circuit and the LED/LCD driving circuit which are connected in parallel are connected to an SEG pin through a function switching switch, and a filter circuit isconnected to the circuits. And each COM pin is connected with the logic control circuit through a state control switch. By means of the mode, the touch drive is integrated in the LED or LCD display drive chip, the pin time-sh