Temperature detecting device, temperaure detecting method and liquid crystal driving device

Abstract

The invention relates to a temperature detecting device, a temperaure detecting method and a liquid crystal driving device. The temperature detecting device comprises a state machine, a frame frequency selection unit and a frame frequency output unit. When a current temperature value jumps around a certain critical temperature value, the state machine judges whether the difference value of the current temperature value and the critical temperature value is within the preset range; if the difference value of the current temperature value and the critical temperature value is within the preset range, the state machine determines that the current state is the previous state; if the difference value of the current temperature value and the critical temperature value is out of the preset range, the state machine determines that the current state is the state corresponding to the current temperature value. The frame frequency selection unit connected with the state machine is used for selecting the frame frequency corresponding to the current state according to the current state determined by the state machine. The frame frequency output unit connected with the frame frequency selection unit is used for outputting the frame frequency. When the temperature jumps frequently in a smaller range, the temperature detecting device can avoid the frequent jump of the frame frequency and the flicker of a liquid crystal display screen caused by the frequent jump of the frame frequency, and thus the display quality of liquid crystal display screen is enhanced.

Description

technical field [0001] The invention relates to the field of liquid crystal drive, in particular to a temperature detection device, a method and a liquid crystal drive device provided with the temperature detection device. Background technique [0002] In liquid crystal display technology, the display quality of the liquid crystal display (such as display grayscale, brightness characteristics, etc.) is generally affected by temperature. The device is used to compensate the change of the display quality of the liquid crystal display caused by the temperature. The working process of the temperature detection device is as follows: firstly, the temperature is detected, and when the temperature changes, by selecting a better frame frequency, the temperature-induced change in the display quality of the liquid crystal display is compensated. In the process of realizing the present invention, the inventor found that when the temperature frequently jumps within a small range, the fr...

AI Technical Summary

Problems solved by technology

In the process of realizing the present invention, the inventor found that when the temperature frequently jumps within a small range, the frame frequency will also frequently jump, and the frequent jump of the frame frequency will cause the LCD screen to flicker. Affects the display quality of the LCD screen

Images