A method for driving a light-emitting device based on a unidirectional current-cutoff gate

By calculating the grayscale fluctuation coefficient and dividing the frame number in a high-frequency environment, and adopting the corresponding gate current control method, the signal distortion and structural damage problems of the unidirectional current interception gate structure in a high-frequency environment are solved, and the stable control of the luminous efficiency is achieved.

CN119724081BActive Publication Date: 2025-10-03MINDU INNOVATION LAB
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Patent Information

Application Number
CN202510058957.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-01-15
Publication Date
2025-10-03
Estimated Expiration
2045-01-15

AI Technical Summary

Technical Problem

In a high-frequency environment, the gate current signal of the unidirectional current intercepting gate structure is easily distorted or unstable, causing damage to the unidirectional current intercepting gate structure and affecting the luminous efficiency control effect.

Method used

By obtaining the display grayscale value and mean of the light-emitting device, calculating the grayscale fluctuation coefficient, and judging whether it is less than the standard fluctuation coefficient, if it is less than, a unified gate control current is adopted; if it is greater, the number of frames is divided into consecutive sub-frames and the corresponding gate control current is adopted in each sub-frame to reduce the number of gate current control times in high-frequency environments.

Benefits of technology

Under the premise of ensuring luminous efficiency, the number of changes in the gate regulating current is reduced, the abnormality of the unidirectional current intercepting gate structure is avoided, and the stability and performance of the light-emitting device are improved.

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Abstract

The present invention discloses a method for driving a light-emitting device based on unidirectional current-cutoff gate regulation, comprising: obtaining each display grayscale value within a first preset number of frames to be displayed by the light-emitting device; obtaining a first grayscale fluctuation coefficient based on the display grayscale value; determining whether the first grayscale fluctuation coefficient is less than a standard grayscale fluctuation coefficient, and if so, obtaining a first standard gate regulation current and applying the first standard gate regulation current to the light-emitting device; if not, dividing the first preset number of frames into a plurality of consecutive sub-frames, so that the second grayscale fluctuation coefficient corresponding to each consecutive sub-frame number is less than the standard grayscale fluctuation coefficient and the number of consecutive sub-frames is minimized; obtaining a second standard gate regulation current for each consecutive sub-frame number, and applying the corresponding second standard gate regulation current to the light-emitting device. The present invention can reduce the number of gate current regulation times in a high-frequency environment, avoid unidirectional current-cutoff gate structure anomalies, and simultaneously ensure the regulation effect of luminous efficiency.
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Citation Information

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