Optical Sheet Package Electrostatic Film Attachment
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Solution Overview
Problem
The adhesion layer used to attach protective films to optical sheets can lead to pollution and increased manufacturing costs, and the thinness of optical sheets makes it difficult to distinguish front and rear surfaces, resulting in potential reversal errors during assembly.
Innovation Solution
The use of electrostatic attraction to attach protective films to optical sheets without a separate adhesion layer, and employing differently colored protective films to distinguish between the front and rear surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an adhesion layer is used to attach the protective film to the optical sheet, then the protective film can be attached securely, but the manufacturing cost increases and the optical sheet may be polluted by formation material
Solution Approach 1:
The invention extracts and eliminates the adhesion layer from the protective film structure. By using a pressure-sensitive adhesive layer directly on the protective film that can be detached without leaving residue, the patent removes the separate adhesion layer component, thereby reducing structural complexity and manufacturing cost while maintaining attachment reliability
Solution Approach 2:
The patent employs a disposable pressure-sensitive adhesive layer on the protective film that serves its attachment function temporarily and then can be cleanly removed. This single-use adhesive approach eliminates the need for permanent adhesion layers, reducing overall structure complexity while ensuring reliable temporary attachment during manufacturing and transport
2Device complexity
If the optical sheet is made very thin to reduce weight and cost, then manufacturing cost decreases, but it becomes difficult to distinguish front and rear surfaces
Solution Approach 1:
The patent applies color-coded protective films or color markers on the optical sheet surfaces to enable visual distinction between front and rear surfaces. This color indication method allows workers to easily identify correct orientation during assembly without requiring the optical sheet to be thicker, thereby maintaining low manufacturing cost while solving the surface distinction problem
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
This approach reduces manufacturing costs, prevents pollution, and improves process efficiency by ensuring correct surface orientation during assembly, thereby reducing defective products.
Implementation Method 1
a force between the unstructured surface and the first protective film is an electrostatic attraction
Data Source
AI summary
An optical sheet package is disclosed. The optical sheet package includes an optical sheet including an unstructured surface, and a first protective film at a location corresponding to the unstructured surface. The unstructured surface is attached to the first protective film, and a force between the unstructured surface and the first protective film is an electrostatic attraction.