Display Panel Shielding Layout for Narrow Bezels and Uniform Reflection
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Solution Overview
Problem
Display panels face issues with large border widths and uneven light-dark degrees at different positions, especially when in a screen-off state due to inconsistent ambient light reflection caused by wiring fractures.
Innovation Solution
The display panel design includes a first wiring electrically connected to signal lines and a second wiring with a fracture end in the display region, both insulated from each other, with a shielding part positioned near the light-exiting side to overlap with the fracture end, reducing border width and enhancing light consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If wirings are extended into the display region to reduce border width, then the border width is reduced, but the wirings create uneven light-dark degrees and visual inconsistencies when fractured
Solution Approach 1:
A shielding part is introduced as an intermediary element to cover the fracture end of the second wiring. This shielding part acts as a mediator that blocks the visual impact of the wiring fracture, preventing uneven light-dark degrees from being visible while allowing the wiring to extend into the display region for border width reduction
Solution Approach 2:
The harmful visual effect of the wiring fracture is extracted and isolated by positioning the shielding part specifically at the fracture end location. This separates the functional need for wiring extension from the harmful visual consequence of fracture visibility
2Illumination intensity
If wirings are placed in the display region to improve light reflection consistency, then light consistency improves, but the wiring structure becomes more complex requiring insulation and shielding
Solution Approach 1:
Multiple wirings (first wiring and second wiring) are merged into a coordinated structure where they are insulated from each other but work together to improve ambient light reflection consistency. The shielding part is also integrated into this system to cover the fracture end, combining multiple functions into a unified structure
3Reliability
If the shielding part is positioned to overlap the fracture end, then visual uniformity is improved, but the shielding part may interfere with pixel operation
Solution Approach 1:
The shielding part is positioned with local precision to cover only the fracture end of the wiring where visual uniformity is needed, while being configured to avoid interfering with pixel operation. The shielding is applied locally at the fracture location rather than across the entire display region
Data Source
AI summary
A display panel and a display device are provided. The display panel includes pixels and first signal lines electrically connected to the pixels, wirings, and a shielding part. The pixels, the first signal lines, and at least part of one wiring are located in a display region. The wirings include first and second wirings, one first wiring is electrically connected to one first signal line, and the second wiring is insulated from the first wiring, one second wiring has a fracture end located in the display region, and one first wiring is located on a side of the fracture end away from one of the at least one second wiring. In a direction perpendicular to a plane of the display panel, the shielding part is located at a side of the wirings close to a light-exiting side of the display panel, and the shielding part overlaps with the fracture end.