Complex Sheet Side Cover for Moisture Sealing
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Solution Overview
Problem
Moisture penetration into optical sheets in liquid crystal display panels leads to reduced functionality and screen quality due to capillary effects, as the space between prisms in these sheets allows moisture to spread and cause deterioration.
Innovation Solution
A complex sheet is produced with a first support layer, a light refracting layer, and a second support layer, where the light refracting layer includes prisms, and a side cover is formed by laser cutting to cover the openings between the prisms, preventing moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light refracting layer with prisms is used to improve light distribution, then optical performance is improved, but moisture penetration increases due to spaces between prisms
Solution Approach 1:
A side cover layer is formed over the light refracting layer to seal the spaces between prisms. This thin film structure prevents moisture penetration while maintaining the optical functionality of the prism array below.
Solution Approach 2:
The optical sheet is divided into distinct functional layers: a light refracting layer with prisms for optical performance, and a separate side cover layer for moisture protection. This segmentation allows each layer to perform its specific function independently.
2Reliability
If a side cover is formed to prevent moisture penetration, then reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The side cover is integrated with the existing optical sheet structure rather than being a completely separate component. The side cover is formed as part of the optical sheet assembly, combining the light refracting function and moisture protection function into a unified structure.
Solution Approach 2:
The side cover is formed through laser cutting and bending of the optical sheet material itself, using the material's own properties to create the sealing structure without requiring additional sealing materials or complex assembly processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The side cover effectively seals the gaps between the prisms, reducing moisture penetration and maintaining the optical sheet's functionality and display panel quality.
Implementation Method 1
irradiating a laser beam that penetrates the second support layer, the light refracting layer, and the first support layer
Implementation Method 2
a light refracting layer on the first support layer, the light refracting layer including a plurality of light refracting elements
Implementation Method 3
a side cover on the inclined portion of the complex sheet, the side cover covering an opening at an edge of the light refracting layer
Data Source
AI summary
A complex sheet, a method for producing the complex sheet, and a display panel including the complex sheet is disclosed. The complex sheet reduces moisture penetration by forming a side cover that covers an opening included in an edge of a light refracting layer that is included in the complex sheet.