Segmented Retaining Wall Prevents Alignment Film Backflow
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Solution Overview
Problem
The existing display panel manufacturing process experiences display abnormalities due to the backflow of liquid alignment film material, which affects the alignment and adhesion of substrates, leading to issues with sealing and display quality.
Innovation Solution
A display panel design featuring a substrate with an active and non-display area, an alignment film in the active area, a sealant in the non-display area, and a retaining wall composed of sub-retaining walls forming protrusions and depressions to prevent the alignment film liquid from contacting the sealant, thereby guiding it to converge and prevent backflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vertical retaining wall is used to prevent liquid alignment film material from flowing to the sealant, then the sealant adhesion is improved, but the liquid alignment film material generates backflow causing display abnormalities
Solution Approach 1:
The retaining wall is divided into multiple sections with different heights arranged alternately, creating a segmented structure that prevents liquid alignment film material from flowing to the sealant while avoiding backflow that causes display abnormalities
Solution Approach 2:
Different sections of the retaining wall have different heights tailored to local requirements, with higher sections preventing outward flow and lower sections preventing backflow, achieving localized optimization of both sealant adhesion and display quality
Data Source
AI summary
The application discloses a display panel and a display device. The display panel comprises a substrate comprising an active area and a non-display area surrounding the active area; an alignment film arranged in the active area; a sealant arranged in the non-display area; and at least one row of retaining wall arranged between the alignment film and the sealant, and the retaining wall comprises a plurality of sections of sub-retaining walls which are arranged at intervals to form protrusions and depressions.