Temperature self-adaptation drive method for smectic state liquid crystal display screen

Abstract

The invention discloses a temperature self-adaptation drive method for a smectic state liquid crystal display screen, which comprises the following steps of: measuring the temperature of the current environment of the smectic state liquid crystal display screen by using a temperature sensor; determining and adjusting the voltage amplitude and / or the pulse pair number of drive pulses according to the temperature range of the measured temperature; and applying the adjusted drive pulses to the current row electrode and line electrode to be driven on the smectic state liquid crystal display screen so as to display images, wherein the temperature range of between -20 and 70 DEG C is divided into a plurality of temperature ranges, and each temperature range corresponds to one voltage magnitude and one pulse pair number. By adopting the temperature self-adaptation drive method, the smectic state liquid crystal display screen can display stably at different environment temperatures, and the display effect of the images is not influenced by the environment temperatures.

Description

technical field [0001] The invention relates to a display driving method, in particular to a temperature self-adaptive driving method suitable for a smectic liquid crystal display. Background technique [0002] Liquid crystal display is one of the most promising flat panel display devices at present. Traditional liquid crystal displays are passive displays, that is, transmissive displays, which can only be displayed under the condition of an external backlight, but the power consumption of the backlight is the liquid crystal itself. More than hundreds of times the power consumption, very energy-consuming. With the development of liquid crystal technology, various liquid crystal materials emerge in an endless stream, among which the reflective liquid crystal that does not require a backlight has an absolute advantage due to its low power consumption characteristics. The smectic liquid crystal display in the Chinese utility model patent "a display control circuit" (patent num...

AI Technical Summary

Problems solved by technology

However, the ambient temperature of the display screen is not constant, and the smectic liquid crystal has the characteristics that the lower the temperature, the harder it is to deflect, and the higher the temperature, the easier it is to deflect. Therefore, when the ambient temperature changes, the original setting Inverted low-frequency drive pulses or inverted high-frequency drive pulses with good frequency, voltage amplitude and number of pulse pairs cannot deflect the smectic liquid crystal molecules to the expected orientation, that is, the display screen cannot display the originally expected image display effect

In other words, the same driving pulse drives the smectic liquid crystal molecules to different degrees of deflection under different ambient temperature conditions, which will cause insufficient frosting or insufficient transparency of the display screen as the ambient temperature changes, which is manifested in the image There will be a loss of grayscale or a drop in contrast

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