Display Spacer Layout With Conductive-Line Overlap Against Light Leakage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flat display devices are prone to light leakage due to external pressure causing spacers to displace, which damages film layers and leads to light leakage issues.
Innovation Solution
The design includes a spacer that overlaps the conductive line and utilizes bumps and trenches to stabilize the spacer, preventing it from shifting and reducing the likelihood of light leakage by trapping the spacer within these structures when external pressure is applied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If spacers are disposed between substrates to maintain cell gaps, then the cell gap is maintained, but the spacers may displace under external pressure causing light leakage
Solution Approach 1:
The patent applies preliminary action by pre-positioning the spacer at a specific location that overlaps with the conductive line before external pressure is applied. This pre-positioning ensures that when pressure occurs, the spacer is already in an optimal position to minimize displacement and prevent light leakage, rather than reacting to pressure after displacement begins
Solution Approach 2:
The conductive line serves as an intermediary element between the spacer and the substrate. By positioning the spacer to overlap with the conductive line, the conductive line acts as a reference structure that helps stabilize the spacer position and prevents direct displacement onto the film layers, thereby mediating the interaction between spacer and substrate under external pressure
2Object-affected harmful factors
If the spacer is positioned to overlap conductive lines, then light leakage is reduced, but the device structure becomes more complex
Solution Approach 1:
The conductive line serves multiple functions: it provides electrical connectivity for device operation and simultaneously serves as a positioning reference for the spacer to prevent light leakage. This multi-functionality eliminates the need for separate positioning structures, reducing overall device complexity while achieving the light leakage prevention goal
Solution Approach 2:
The patent merges the spacer positioning function with the existing conductive line structure. Instead of creating a separate positioning mechanism, the spacer is designed to overlap with and be positioned by the conductive line, combining two functions (electrical conduction and mechanical positioning) into a single integrated structure
Data Source
AI summary
An electronic device includes a first substrate, a second substrate disposed opposite to the first substrate, a first conductive line disposed between the first substrate and the second substrate, a second conductive line disposed adjacent to the first conductive line, a spacer disposed between the first conductive line and the second substrate, a first dummy pad disposed adjacent to the first conductive line, and a second dummy pad disposed adjacent to the first conductive line and at a side of the first conductive line opposite to the first dummy pad. The first conductive line and the common electrode line are comprised in a same layer. The spacer overlaps the scan line.