Display Panel Dummy-Wire Grid for Uniform Light Emission
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Solution Overview
Problem
Existing organic light-emitting display panels suffer from uneven light emission and spot generation in the display region due to fan-out wiring, which affects display uniformity and viewing experience.
Innovation Solution
A display panel design incorporating a fan-out region partially disposed in the display region, with fan-out wires connected to pads, and dummy wires forming a grid structure insulated from the fan-out wires to improve light emission uniformity, reducing the distance between the fan-out region and data lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If fan-out wires are provided in the display region to achieve narrow-frame design, then the viewing experience is improved, but uneven light emission and spots are generated in the display region
Solution Approach 1:
Dummy wires are introduced as intermediary elements between the fan-out wires and the display region. These dummy wires form a grid structure that acts as a mediator to block or reduce the impact of fan-out wires on light emission, thereby preventing spots and uneven light emission while maintaining the narrow-frame design enabled by fan-out wires in the display region
2Speed
If fan-out region is disposed in the display region to reduce distance between fan-out wires and data lines, then signal transmission efficiency is improved, but display uniformity deteriorates due to light emission issues
Solution Approach 1:
The dummy wire grid structure serves as an intermediary layer that allows the fan-out region to be disposed in the display region for efficient signal transmission, while simultaneously mitigating the adverse light emission effects. The dummy wires block the harmful optical impact without interfering with the electrical signal transmission between fan-out wires and data lines
3Illumination intensity
If dummy wires forming grid structure are added to improve light emission uniformity, then display uniformity is improved, but device complexity increases
Solution Approach 1:
The dummy wires forming the grid structure serve multiple functions simultaneously: they block the optical impact of fan-out wires to prevent spots and uneven light emission, while also potentially serving as additional signal transmission paths or reference structures. This multi-functionality justifies the added structural elements without proportionally increasing device complexity
Data Source
AI summary
Provided are a display panel and a display device. The display panel includes a display region, a non-display region at least partially surrounding the display region, and a fan-out region. The display region includes a plurality of scanning lines extending along a first direction and a plurality of data lines extending along a second direction, where the first direction intersects with the second direction. The non-display region includes a plurality of pads. The fan-out region is configured on one side of the display region closer to the plurality of pads, where at least part of the fan-out region is disposed in the display region. The fan-out region is provided with a plurality of fan-out wires for connecting the plurality of data lines to the corresponding pads.