Full-temperature-section liquid crystal temperature compensating circuit

The invention mainly discloses a full-temperature-section liquid crystal temperature compensating circuit which comprises a temperature sampling branch circuit, a single chip microcomputer, a compensating output circuit and a liquid crystal display. An environmental temperature signal of an instrument is acquired and inputted into the single chip microcomputer by the temperature sampling branch circuit; a compensating signal is outputted by an internal program of the single chip microcomputer according to the temperature signal; and the compensating signal is processed by the compensating output circuit to form a driving signal so as to drive the liquid crystal display to work. According to the invention, the cost is reduced, the performance of the automobile instrument is improved, the temperature compensation can be realized, the compensation of the full temperature section can be carried out, and the instrument can be ensured to still normally work at the limiting working temperature of a vehicle.