Array Substrate Power Lead Sharing for Stable Mini-LED Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mini-LED display devices face challenges in maintaining signal stability and reducing signal disturbance, which affects display contrast and overall performance.
Innovation Solution
The array substrate design includes multiple signal channel regions with shared power voltage leads and pad connection circuits to reduce impedance and improve anti-disturbance ability, featuring a configuration where control region columns share power voltage leads, reducing the number of power voltage leads and increasing the width of each lead to enhance stability and debugging ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate power voltage leads are used for each control region column, then signal stability and anti-disturbance ability are improved, but the number of leads increases and impedance decreases
Solution Approach 1:
The patent merges power voltage leads by making control region columns share common power voltage leads. Specifically, multiple control region columns share a first power voltage lead and a second power voltage lead, reducing the total number of leads while maintaining electrical connection. This combining approach reduces device complexity and the number of leads without completely sacrificing signal stability, as the shared leads are designed with sufficient width to maintain low impedance.
Solution Approach 2:
The patent applies local quality by differentiating the width of power voltage leads based on their function. The first power voltage lead has a first width, while the second power voltage lead has a second width that is greater than the first width. This local differentiation optimizes the electromagnetic environment and signal stability in different regions where different types of leads are needed, addressing the reliability concern while accepting reduced overall lead count.
2Device complexity
If power voltage leads are shared among control region columns, then the number of leads is reduced and device complexity is lowered, but impedance increases and anti-disturbance ability deteriorates
Solution Approach 1:
The patent changes the physical parameters of the power voltage leads by adjusting their widths. The first power voltage lead has a first width, and the second power voltage lead has a second width that is greater than the first width. By changing these dimensional parameters, the patent compensates for the increased impedance that results from sharing leads among multiple control region columns, thereby maintaining anti-disturbance ability while reducing device complexity.
3Reliability
If the width of power voltage leads is increased, then impedance is reduced and electromagnetic environment is enhanced, but the area occupied by leads increases
Solution Approach 1:
The patent applies local quality by making different power voltage leads have different widths based on their specific requirements. The second power voltage lead has a greater width than the first power voltage lead, allowing each lead type to have optimized dimensions for its function. This localized optimization enhances the electromagnetic environment where needed without uniformly increasing the area occupied by all leads, thus balancing reliability improvement with area constraints.
Data Source
AI summary
An array substrate includes connecting leads, a signal channel region extending in a first direction, a first power voltage lead, and a second power voltage lead. Any one of the signal channel region includes at least two control region columns extending in the first direction, and any one of the control region columns includes a plurality of control regions arranged along the first direction. Any one of the control regions includes a pad connecting circuit and a first pad group for bonding a microchip, the first pad group is electrically connected to the first power voltage lead. The pad connection circuit includes a plurality of second pad groups, and is provided with a first end electrically connected to the first pad group, and a second end electrically connected to the second power voltage lead.