Sensing Signal Line Layout for Display Brightness Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices with sensing electrodes face issues such as mura defects due to increased complexity, leading to non-uniform brightness and failing to meet consumer expectations.
Innovation Solution
The electronic device incorporates a substrate with switching elements and sensing signal lines, where the number and channel width of switching elements connected to different sensing signal lines are varied to adjust the recovery capability of the common voltage, reducing brightness differences and improving uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensing electrodes are added to provide sensing functions, then the functionality of the electronic device is improved, but mura defects and non-uniform brightness occur
Solution Approach 1:
The patent applies local quality by differentiating the channel widths of switching elements based on their position and connection. Switching elements connected to different sensing signal lines have different channel widths, creating localized variations in electrical characteristics that compensate for the non-uniformity introduced by sensing electrodes. This local differentiation resolves the brightness uniformity issue while preserving sensing functionality.
2Reliability
If the number of switching elements connected to sensing signal lines is increased, then the recovery capability of common voltage is improved, but the device complexity increases
Solution Approach 1:
The patent employs parameter changes by varying the channel widths of switching elements as a key electrical parameter. Instead of uniformly increasing the number of switching elements, the invention adjusts the channel width parameter of existing switching elements to achieve the desired voltage recovery capability. This approach improves reliability without proportionally increasing device complexity.
3Reliability
If different channel widths are used for switching elements, then the brightness uniformity is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent implements local quality by assigning specific channel width values to switching elements based on their connection to different sensing signal lines. This localized differentiation creates the necessary brightness uniformity while maintaining a systematic and controllable manufacturing approach. The channel width variations are deliberately designed and localized rather than random, facilitating precise manufacturing control.
Data Source
AI summary
Electronic devices are provided. The electronic device includes a substrate, a plurality of switching elements, a first sensing signal line, and a second sensing signal line. The substrate has a peripheral area. The plurality of switching elements is disposed on the substrate and is disposed in the peripheral area. The first sensing signal line is disposed on the substrate and is electrically connected to a first number of the plurality of switching elements. The second sensing signal line is disposed on the substrate and is electrically connected to a second number of the plurality of switching elements. Wherein, the plurality of switching elements is electrically connected to a common signal line, and the first number is different from the second number.