Moisture-Proof Film Projecting Section for Display Device Protection
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Solution Overview
Problem
Existing display devices, such as organic EL and liquid crystal displays, face reliability issues due to insufficient moisture-proofing, as a single moisture-proof film on the upper portion of the display layer is not sufficient to prevent moisture infiltration, which can degrade the organic layer.
Innovation Solution
A display device configuration that includes a moisture-proof film with a projecting section between the display layer and the surface film, extending the moisture infiltration path and enhancing the moisture-proof function, with the projecting section projecting outwardly from the end faces of both the display layer and the surface film, and a sealing section covering the projecting section to further enhance protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single moisture-proof film is disposed on the upper portion of the display layer, then the structure is simple, but the moisture-proof function is insufficient and reliability deteriorates
Solution Approach 1:
The moisture-proof film is extended in the horizontal dimension by forming a projecting section that protrudes from the end face of the display layer. This dimensional extension creates an additional protection zone at the side face, transforming a single-point protection approach into a multi-dimensional barrier system that effectively blocks moisture infiltration paths.
Solution Approach 2:
The projecting section of the moisture-proof film is positioned in advance to cover the end face of the display layer before moisture infiltration can occur. This preliminary positioning creates a proactive barrier that prevents moisture from reaching the display layer through side faces, rather than relying on passive protection after infiltration begins.
2Reliability
If a moisture-proof film with projecting section is provided between the display layer and surface film, then the moisture infiltration path is lengthened and moisture-proof function is enhanced, but device complexity increases
Solution Approach 1:
The moisture-proof film is segmented into two functional zones: a main body portion covering the upper display layer and a projecting section extending from the end face. This segmentation allows each zone to perform its specific function - the main body provides general protection while the projecting section specifically addresses side-face infiltration paths, achieving enhanced protection without excessive complexity.
Solution Approach 2:
The projecting section is localized at the end face region where moisture infiltration through side faces occurs. This local quality enhancement concentrates the moisture-proof function precisely where it is most needed, rather than uniformly increasing protection across the entire device, thus improving effectiveness without proportionally increasing overall complexity.
Data Source
AI summary
A display device includes: a display layer; a surface film disposed to face a display surface of the display layer; and a moisture-proof film disposed between the display layer and the surface film and including a projecting section. The projecting section projects outwardly of an end face of the display layer and an end face of the surface film.