Display Panel Common Voltage Routing for Narrow-Bezel Image Quality
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The reduction of the peripheral area in display apparatuses affects the quality of light emitted from light-emitting diodes, as elements in the peripheral area can interfere with the display area.
Innovation Solution
A display apparatus design with a substrate that includes a display area and a peripheral area, featuring a common voltage supply line with multiple input parts and specific arrangements of common and data lines, connection lines, and voltage lines on different layers to minimize interference and reduce dead space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If elements are arranged in the peripheral area to reduce dead space, then the peripheral area is reduced, but the quality of light emitted from light-emitting diodes deteriorates due to interference from peripheral elements
Solution Approach 1:
The patent applies dimensionality change by routing the common voltage line from the peripheral area through the display area to reach the third common voltage input part. This spatial reconfiguration allows the peripheral area to be minimized while still providing voltage supply paths that do not interfere with the light-emitting diodes in the display area, thus reducing dead space without compromising light emission quality
Solution Approach 2:
The third common voltage input part acts as an intermediary element positioned within the display area but electrically connected to the peripheral area through the common voltage line. This intermediary structure enables voltage supply from the peripheral area while maintaining a clear separation between the voltage supply path and the light-emitting regions, allowing reduced dead space without direct interference from peripheral elements
2Area of stationary object
If the common voltage line extends from the peripheral area through the display area, then the dead space is reduced, but the current density and heat generation increase
Solution Approach 1:
The common voltage supply is segmented into multiple input parts (first, second, and third common voltage input parts) distributed across the peripheral area and display area. This segmentation distributes the current load across multiple entry points, reducing current density in any single line and consequently reducing heat generation while still achieving minimal dead space through the strategic positioning of these segmented inputs
Data Source
AI summary
A display apparatus includes a substrate including a display area and a peripheral area outside the display area, a common voltage supply line arranged in the peripheral area and including a first common voltage input part, a second common voltage input part, and a third common voltage input part between the first and second voltage input parts each arranged in a first edge of the display area, a first common voltage line extending from the third common voltage input part and crossing the display area in a first direction, a first data line extending in the first direction across the display area, a first data input line arranged in the peripheral area, and a first connection line connecting the first data input line to the first data line.