Display Substrate Pad Region Arrangement for Signal Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In display devices, the existing arrangement of the pad region on the side of the short edge of the display region leads to signal lines with long lengths, resulting in significant voltage differences between their ends, which affects the display quality due to poor uniformity.
Innovation Solution
The pad region, bending region, and display region are arranged along the second direction, with the pad region positioned on the side of the long edge, reducing signal line lengths and voltage differences, and the display substrate includes specific configurations for power and signal lines to enhance uniformity and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the pad region is arranged on the side of the short edge of the display region, then the device structure is compact, but the signal line length increases and voltage difference becomes significant
Solution Approach 1:
The patent changes the arrangement dimension by positioning the pad region on the long edge side rather than the short edge side, and by arranging pixels in a specific pattern where odd-numbered and even-numbered pixels are connected to different power lines. This dimensional rearrangement reduces signal line length and voltage difference while maintaining display uniformity.
2Adaptability or versatility
If signal lines are made longer to connect pixels, then more pixels can be covered, but voltage difference between line ends increases
Solution Approach 1:
The patent segments the pixel array into odd-numbered and even-numbered pixels, with each segment connected to separate power lines. This segmentation allows independent optimization of power line paths, reducing the length and voltage difference in each line while ensuring comprehensive pixel coverage.
Solution Approach 2:
By arranging the pad region on the long edge and using alternating power line connections for odd and even pixels, the patent creates a more efficient two-dimensional routing pattern that reduces signal line length without compromising pixel coverage.
Data Source
AI summary
Provided is a display substrate. In the display substrate, a base substrate includes a display region, a bending region and a pad region. A length of the display region in a first direction is greater than a length of the display region in a second direction. Since the pad region, the bending region and the display region are arranged along the second direction, the pad region is arranged on a side where a long boundary line of the display region is located, such that each signal line led into the display region from the pad region has a relatively short length in the display region.