Pixel Circuit Voltage Control for Display Blinking Reduction
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Solution Overview
Problem
Display panels in electronic devices experience blinking when switching between dynamic and still image display areas due to differences in refresh rates, leading to brightness discrepancies.
Innovation Solution
Control the gate voltage of the driving thin film transistor in the pixel circuit to minimize voltage differences between high and low refresh rate display areas, reducing the likelihood of blinking by adjusting node voltages and enabling/disabling data writing units accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If different refresh rates are used for still image and dynamic image display areas, then power consumption is reduced, but brightness difference and blinking occur when switching between areas
Solution Approach 1:
The patent applies different refresh rates to different display areas (still image area vs. dynamic image area) based on their specific requirements. The still image display area uses a lower refresh rate to reduce power consumption, while the dynamic image display area uses a higher refresh rate to maintain image quality and prevent blinking, thus optimizing the system overall.
Solution Approach 2:
The patent changes the gate voltage parameter of the driving thin film transistor dynamically based on the refresh rate requirements of different display areas. By adjusting the gate voltage to compensate for the lower refresh rate in the still image area, the system maintains consistent brightness and prevents blinking while operating at reduced power consumption.
2Use of energy by moving object
If refresh rate of still image display area is reduced, then power consumption is reduced, but brightness difference between display areas increases
Solution Approach 1:
The patent changes the gate voltage parameter of the driving thin film transistor dynamically based on the refresh rate requirements of different display areas. By adjusting the gate voltage to compensate for the lower refresh rate in the still image area, the system maintains consistent brightness and prevents blinking while operating at reduced power consumption.
3Device complexity
If gate voltage of driving thin film transistor is not controlled, then device complexity is reduced, but brightness difference between display areas occurs
Solution Approach 1:
The patent changes the gate voltage parameter of the driving thin film transistor dynamically based on the refresh rate requirements of different display areas. By adjusting the gate voltage to compensate for the lower refresh rate in the still image area, the system maintains consistent brightness and prevents blinking while operating at reduced power consumption.
Data Source
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AI summary
Embodiments of this application provide a voltage control method, a device, and a storage medium, which are applied to the field of terminal technologies. The method is applied to an electronic device having a pixel circuit. The pixel circuit includes a drive module. A control end of the drive module is connected to a first node, and a source end of the drive module is connected to a second node. The method includes: when driving to display a first area of a first frame of image, controlling a voltage of the first node to be a first voltage, and controlling a voltage of the second node to be a second voltage; and when driving to display a second area of the first frame of image, controlling the voltage of the first node to be a third voltage, and controlling the voltage of the second node to be a fourth voltage, where a voltage difference between the first voltage and the second voltage is greater than a voltage difference between the third voltage and the fourth voltage; and a refresh rate of the first area is a first refresh rate, a refresh rate of the second area is a second refresh rate, and the first refresh rate is less than the second refresh rate. In this way, a probability that a display panel of the electronic device blinks can be reduced.