Display Power Mesh Layout for High-Resolution Pixel Driver Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
As display devices increase in size or resolution, the resistance of wires causes power or constant voltage to be delayed or distorted, limiting the integration of light emitting pixel drivers and the high resolution of the display device.
Innovation Solution
The implementation of mesh-shaped wiring that extends in intersecting directions, connecting neighboring power auxiliary lines through mesh auxiliary electrodes, reduces the width of the power line and facilitates the integration of light emitting pixel drivers, allowing for high resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mesh-shaped wiring is used to transmit power to light emitting pixel drivers, then power delay and distortion are reduced, but the wiring occupies wider width which limits the integration of light emitting pixel drivers
Solution Approach 1:
The power line is segmented into multiple auxiliary power lines arranged in parallel. Each auxiliary power line transmits power independently, distributing the power transmission function across multiple narrower lines rather than using a single wide mesh-shaped wiring structure. This segmentation reduces the width occupation while maintaining reliable power transmission to the light emitting pixel drivers.
2Manufacturing precision
If display device area or resolution is increased, then display performance is improved, but wire resistance increases causing power delay and distortion
Solution Approach 1:
The power transmission path is divided into multiple parallel auxiliary power lines, reducing the resistance of each individual line. This segmentation allows the display device to achieve higher resolution and larger area while maintaining low overall resistance and high-quality power transmission to each pixel driver.
Solution Approach 2:
Multiple auxiliary power lines are combined in parallel to provide redundant power transmission paths. This merging of multiple narrow lines achieves the same power transmission capability as a single wide line while occupying less total width and reducing resistance effects, enabling higher display resolution.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
There is provided a display device comprises a substrate comprising a display area in which emission areas; a circuit layer; and an element layer comprising light emitting elements disposed in the emission areas. The circuit layer comprises light emitting pixel drivers electrically connected to the light emitting elements and arranged in a plurality of pixel columns and a plurality of pixel rows; and a first power line transmitting a first power to the light emitting pixel drivers. The first power line comprises power auxiliary lines extending in one direction; and mesh auxiliary electrodes electrically connected to the power auxiliary lines. Among the power auxiliary lines, two power auxiliary lines neighboring each other are electrically connected to each other through mesh auxiliary electrodes disposed between the two power auxiliary lines and parallel to each other in the one direction, among the mesh auxiliary electrodes.