Display Panel Bank Channels for Bubble and Light Leakage Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing process of display panels often results in impurities such as bubbles being left in the display region, which can block light emitted by light-emitting devices and degrade the display effect.
Innovation Solution
A display panel design featuring a bank layer with bank structures that include channels communicating adjacent bank openings, allowing for the discharge of impurities and bubbles, thereby reducing their influence on light emission and improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If bank structures are formed to enclose bank openings for isolating light-emitting devices, then light leakage and crosstalk are reduced, but impurities and bubbles are trapped inside the bank openings degrading display quality
Solution Approach 1:
The bank structure is segmented by introducing a first channel that divides the enclosed space, allowing the bank opening to be both isolated for light containment and connected for impurity discharge. This segmentation resolves the contradiction by creating functional zones within the bank structure.
Solution Approach 2:
The first channel acts as an intermediary element between the bank opening interior and exterior, providing a controlled pathway for impurities and bubbles to escape while maintaining the overall enclosure for light isolation. This mediator enables both functions simultaneously.
2Object-affected harmful factors
If the bank layer is made dense to prevent light leakage, then display quality improves, but manufacturing impurities become trapped and affect light emission
Solution Approach 1:
The dense bank structure is segmented by incorporating the first channel, creating a controlled void pathway that allows impurity removal while maintaining density in the surrounding bank structures for light leakage prevention.
Solution Approach 2:
The bank structure exhibits local quality differentiation: the majority maintains high density for light isolation, while the first channel region provides low density for impurity discharge. This localized variation resolves the contradiction between density and impurity removal.
3Object-generated harmful factors
If channels are added to bank structures to discharge impurities, then display quality improves, but device complexity increases
Solution Approach 1:
The first channel is designed to serve multiple functions: discharging bubbles, removing impurities, and potentially facilitating material flow during manufacturing. This multi-functionality justifies the added structural element by providing several benefits from a single feature.
Solution Approach 2:
The first channel serves as an intermediary pathway that simplifies the overall manufacturing process by providing a dedicated route for impurity removal, reducing the need for complex post-manufacturing cleaning or additional processing steps.
Data Source
AI summary
Provided are a display panel and a manufacturing method thereof. The display panel includes: a first substrate and a second substrate disposed opposite to each other; a bank layer located on a side of the first substrate facing the second substrate; and a light-emitting device. The bank layer includes a plurality of bank structures; and the plurality of bank structures enclose a plurality of bank openings. The light-emitting device is arranged corresponding to each bank opening of the plurality of bank openings. The plurality of bank structures includes at least one first bank structure, and each of the at least one first bank structure has a first channel communicating at least two adjacent ones of the plurality of bank openings.