Display Panel Mesh Wiring for Uniform Power Signal Distribution
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Solution Overview
Problem
The significant difference in square resistance between longitudinal signal lines and transverse wirings in display panels affects the in-plane uniformity of power signals, leading to non-uniform display performance.
Innovation Solution
The implementation of a mesh wiring structure formed by electrically connecting first and second signal lines in different layers, with the second signal line intersecting the first, and connecting the storage capacitor's plate to this mesh wiring, improves signal uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple capacitor plates in a pixel circuit row are interconnected to form transverse wirings with longitudinal signal lines arranged in a mesh wiring structure, then power signal transmission is enabled, but the significant difference in square resistance between longitudinal signal lines and transverse wirings affects the in-plane uniformity of power signals
Solution Approach 1:
The patent applies local quality by differentiating the square resistance values of longitudinal and transverse wirings. The longitudinal signal lines are designed with a first square resistance value while transverse wirings have a second square resistance value that is 0.5 to 2 times the first value. This localized adjustment of electrical properties in different wiring directions compensates for the inherent resistance differences, achieving uniform power signal distribution across the display panel without requiring uniform wiring design throughout.
2Reliability
If the second plate of the storage capacitor is electrically connected to the first signal line with the second signal line also connected to the first signal line, then the mesh wiring structure is formed, but the difference in square resistance affects power signal uniformity
Solution Approach 1:
The patent implements parameter changes by adjusting the square resistance values of different wiring components. Specifically, the transverse wirings are designed with a second square resistance value that is 0.5 to 2 times the first square resistance value of longitudinal signal lines. This parameter adjustment compensates for the resistance differences inherent in the mesh wiring structure, ensuring uniform power signal transmission to all pixel circuits while maintaining the reliability of the power signal transmission path.
Data Source
AI summary
A display panel and a display apparatus. The display panel includes a pixel circuit, a first signal line extending along a first direction, and a second signal line extending along a second direction. The first direction intersects with the second direction, and the first direction and the second direction are parallel to a plane of the display panel, respectively. The pixel circuit includes a drive transistor and a storage capacitor. The storage capacitor includes a first plate and a second plate. The first plate is connected to a gate of the drive transistor, and the second plate is electrically connected to the first signal line. The second signal line is electrically connected to the first signal line. The second plate, the first signal line, and the second signal line are disposed in different layers. The display panel of the present disclosure can improve display uniformity.