Cholesteric liquid crystal multi-gray-scale display method and cholesteric liquid crystal display device

By using a uniform driving voltage and voltage duration to regulate the alignment of liquid crystal molecules in a cholesteric liquid crystal display device, the problems of high voltage output accuracy and high complexity in the prior art are solved, and the stability and duration of multi-grayscale display are improved.

CN121708871APending Publication Date: 2026-03-20ANHUI YUTU TECH CO LTD
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Patent Information

Application Number
CN202610017904.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-07
Publication Date
2026-03-20

AI Technical Summary

Technical Problem

In existing cholesteric liquid crystal display technology, different grayscale displays are achieved by changing the voltage, which requires high voltage output accuracy and is highly complex, and cannot meet the human eye's perception needs for brightness and detail in the image.

Method used

By employing a uniform driving voltage in a cholesteric liquid crystal display device and adjusting the arrangement state of liquid crystal molecules based on the negative correlation between grayscale data and the duration of voltage application, multi-grayscale display can be achieved.

Benefits of technology

It reduces the requirements for voltage output accuracy, simplifies the grayscale output process, improves the stability and duration of grayscale display, and meets the human eye's need to perceive the details of brightness and darkness in the image.

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Abstract

The invention discloses a cholesteric liquid crystal multi-gray-scale display method and a cholesteric liquid crystal display device, and relates to the technical field of display. In the multi-gray-scale display method, all the pixel units use the same driving voltage, and multi-gray-scale display is realized by adjusting the duration of the driving voltage instead of changing the voltage, so that when the multi-gray-scale display is realized, the requirement on voltage precision is reduced, and voltage debugging does not need to be performed on each pixel unit independently; the complexity of realizing multi-gray-scale display is reduced; moreover, the method is applied to the cholesteric liquid crystal display device, the cholesteric liquid crystal display device comprises a pixel driving unit and a pixel unit, and the pixel driving unit comprises a driving transistor and a capacitor; the capacitor is connected in parallel with the pixel unit. A capacitor exists in the pixel driving unit and can store voltage, so that the pixel unit can keep previous gray scale display even if voltage is stopped being applied to the driving transistor, and the gray scale display duration is prolonged.
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