Display Panel Data-Line Voltage Tuning for Low-Grayscale Color Shift
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Solution Overview
Problem
The issue of low-grayscale color deviation in display panels, where red light-emitting elements appear excessively bright due to parasitic capacitance, leading to a reddish display, is addressed by increasing the voltage of data lines for red sub-pixels in low-grayscale regions to reduce brightness inconsistencies.
Innovation Solution
A method that involves determining low-grayscale sub-pixels and increasing the voltage of data lines for red sub-pixels, optionally adjusting duty cycles or turn-on voltage values, to align brightness levels across different color elements without requiring high-control precision driver chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the control precision of the driver chip is improved to solve low-grayscale color deviation, then the color consistency of light-emitting elements is improved, but the cost of the display panel increases
Solution Approach 1:
The patent changes the voltage parameter of the data line specifically for red light-emitting elements to compensate for the influence of parasitic capacitance. By adjusting the voltage parameter rather than improving driver chip control precision, the patent achieves color consistency while avoiding increased manufacturing costs.
Solution Approach 2:
The patent applies a localized solution by specifically adjusting the voltage of data lines connected to red light-emitting elements, rather than improving the overall control precision of the driver chip. This localized parameter adjustment targets the specific problem of red element brightness deviation without requiring system-wide upgrades.
2Area of moving object
If the spacing between adjacent light-emitting elements is decreased to improve display resolution, then the pixel density is improved, but the parasitic capacitance on data lines increases
Solution Approach 1:
The patent applies preliminary anti-action by pre-adjusting the voltage parameter of data lines for red light-emitting elements to counteract the harmful effect of parasitic capacitance. This compensatory adjustment is made in advance to offset the negative impact of increased parasitic capacitance caused by reduced spacing, thereby maintaining color consistency in high-resolution displays.
Data Source
AI summary
A display method, a display panel, and a non-transitory computer readable storage medium, relating to the field of display technology. The method includes: determining whether a pixel row to be displayed includes at least one sub-pixel with a grayscale value lower than a predetermined threshold; increasing, if yes, a voltage of a data line on which a light-emitting element is located when displaying the pixel row, and the light-emitting element being configured for displaying a red sub-pixel of the at least one sub-pixel. It is only required to increase the voltage of the data line to solve the problem of color deviation, and no driver chip with high control precision is needed in the display panel, so the cost of the display panel can be reduced.