Display Panel Resistance Compensation for Brightness Uniformity
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Solution Overview
Problem
Special-shaped display panels with irregular pixel arrays face issues of non-uniform display brightness due to varying pixel densities, leading to unsatisfactory display effects, as the load on scan lines differs across rows with different pixel counts.
Innovation Solution
Incorporating resistance compensation units made of metal or metal oxide conducting wires connected to scan signal lines in the display panel, which adjust the load on scan signal lines to compensate for differences in pixel density, ensuring uniform brightness across the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If an irregular-rectangle special-shaped display screen is adopted to increase screen-to-body ratio, then the display area is optimized, but the display uniformity deteriorates due to varying pixel densities in different rows
Solution Approach 1:
The patent applies local quality by introducing resistance compensation units with different resistance values for different scan lines. Specifically, scan lines driving pixel rows with fewer pixels are connected to resistance compensation units with larger resistance values, while scan lines driving pixel rows with more pixels are connected to resistance compensation units with smaller resistance values. This local differentiation compensates for the varying loads on different scan lines, ensuring uniform display brightness across the special-shaped display area.
2Adaptability or versatility
If the number of pixels in each row is made different to match special-shaped display requirements, then the display shape flexibility is improved, but the load on scan lines becomes non-uniform, causing different display brightness
Solution Approach 1:
The patent changes the resistance parameter of compensation units to different values based on the pixel count of each row. Scan lines connected to pixel rows with fewer pixels use resistance compensation units with larger resistance values, while scan lines connected to pixel rows with more pixels use resistance compensation units with smaller resistance values. This parameter differentiation balances the load across all scan lines, maintaining uniform display brightness despite varying pixel densities.
3Device complexity
If the same scan signal is provided to all scan lines, then the circuit design is simplified, but the display brightness becomes non-uniform in special-shaped areas
Solution Approach 1:
The patent introduces resistance compensation units as intermediary elements between the gate driving circuit and the pixel rows. These compensation units act as mediators that adjust the signal characteristics for different scan lines based on their specific load requirements. By placing these intermediaries in the signal path, the system maintains circuit simplicity while achieving uniform display brightness through passive resistance compensation.
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 display uniformity and improves the overall display effect by equalizing the load on scan signal lines, thereby reducing brightness variations and improving the screen-to-body ratio.
Implementation Method 1
resistance compensation units connected to the scan signal lines of the first display area; where the resistance compensation units are metal or metal oxide conducting wires
Data Source
AI summary
Provided are a display panel and a display device, where a display area of the display panel includes a first display area and a second display area, each of the first display area and the second display area includes a plurality of pixels arranged in an array, and the quantity of pixels in at least one row of pixels in the first display area is less than the quantity of pixels in any row of pixels in the second display area. The display panel further includes a gate driving circuit and a plurality of scan signal lines, and at least one of the scan signal lines provides a scan signal for a row of the pixels. The display panel further includes resistance compensation units connected to the scan signal lines of the first display area, and the resistance compensation units are metal or metal oxide conducting wires.