Display Panel Scan Voltage Grading for Uniform Pixel Charging
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Solution Overview
Problem
In display panels, uneven charging of pixel units due to voltage drops along data lines causes inconsistent display luminance, affecting visual experience.
Innovation Solution
A display panel design with a gate driving module that includes voltage division units and scan lines with sequentially increasing voltages, compensating for voltage drops in data signals to ensure uniform luminance across the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data lines transmit data signals to pixel units, then data signals are delivered to pixel units for charging, but voltage drops occur at one end of each data line away from the source driving module, causing uneven charging of pixel units
Solution Approach 1:
The patent applies local quality by making the scan signal voltage different at different locations. Specifically, the voltage of scan signals is made to increase in the direction away from the source driving module, so that pixel units at different positions receive appropriately adjusted voltages to compensate for data line voltage drops, ensuring uniform charging across the display panel.
2Power
If capacitances are formed between data lines and gate scan lines, then signal coupling occurs, but voltage drops increase at one end of data lines, resulting in uneven display luminance
Solution Approach 1:
The patent addresses the luminance uniformity issue by implementing location-dependent scan signal voltages. The voltage of scan signals is designed to increase away from the source driving module, which compensates for the voltage drops caused by capacitances between data lines and gate scan lines, ensuring that all pixel units receive appropriate voltages for uniform display luminance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances luminance uniformity by increasing the charging rate and turned-on degree of transistors, resulting in consistent display brightness throughout the panel.
Implementation Method 1
The gate driving module includes multiple gate driving units and multiple voltage division units, where one of the multiple gate driving units is electrically connected to one of the multiple voltage division units and one of the multiple scan lines. The multiple gate driving units are configured to output driving signals to the multiple voltage division units, and the driving signals are converted into the scan signals through the multiple voltage division units.
Data Source
AI summary
A display panel and a driving method thereof, and a display apparatus are provided. The display panel includes multiple pixel units. Each data line is electrically connected to a column of the multiple pixel units. A source driving module is electrically connected to multiple data lines and outputs data signals to the multiple data lines. Each scan line is electrically connected to a row of the multiple pixel units for inputting scan signals to the multiple pixel units. A gate driving module includes multiple gate driving units and multiple voltage division units. One gate driving unit is electrically connected to one voltage division unit and one scan line. The gate driving unit outputs a driving signal to the voltage division unit to form the scan signal. In a direction away from the source driving module, voltages of the scan signals in the multiple scan lines are sequentially increased.