Display Device Bypass Wiring Around Through-Holes
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Solution Overview
Problem
Existing display technologies face luminance unevenness issues due to coupling between signal lines, particularly when large through-holes are present in the display region.
Innovation Solution
A display device configuration that includes a substrate with a first metal layer, a first inorganic insulating film, and a second metal layer, featuring bypass wiring lines and divided wiring lines around through-holes to minimize signal line coupling, allowing for balanced load distribution across the display region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large through-hole is provided in the display region, then imaging function is improved, but luminance unevenness occurs due to coupling between signal lines
Solution Approach 1:
The patent divides signal lines into multiple segments around the through-hole. Specifically, signal lines are split into first signal lines that extend from one side of the through-hole and second signal lines that extend from the other side, preventing direct coupling across the through-hole while maintaining signal transmission functionality.
Solution Approach 2:
The patent introduces a ground line as an intermediary element between signal lines around the through-hole. The ground line acts as a shield to reduce electromagnetic coupling between adjacent signal lines, thereby preventing luminance unevenness while allowing the through-hole to maintain its imaging function.
2Device complexity
If signal lines are arranged closely to improve wiring density, then device complexity is reduced, but coupling between signal lines increases causing luminance unevenness
Solution Approach 1:
The ground line serves as an intermediary shielding element placed between closely arranged signal lines. This intermediary structure reduces electromagnetic interference and coupling effects between adjacent signal lines, enabling high wiring density without causing luminance unevenness in the display region.
Solution Approach 2:
The patent applies different configurations to different regions around the through-hole. Ground lines are strategically positioned in specific areas where signal line coupling is most problematic, providing localized shielding where needed while maintaining overall wiring density and signal transmission efficiency.
Data Source
AI summary
In a display device, a through-hole and a surrounding region surrounding the through-hole are provided inside an edge of a display region, in which there are provided a first bypass wiring line formed in a first metal layer and bypassing the through-hole in the surrounding region, a first divided wiring line formed in the first metal layer and divided onto one side and the other side of the through-hole, a second bypass wiring line formed in a second metal layer and bypassing the through-hole in the surrounding region, and a second divided wiring line formed in the second metal layer and divided onto one side and the other side of the through-hole.