Front-Light Glass Display Module Without Plastic Protection Layers
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Solution Overview
Problem
Conventional plastic light-guiding structures in display modules are fragile, requiring additional protection layers that increase thickness and reduce durability, leading to inferior user experience and high manufacturing costs.
Innovation Solution
A front-light glass display module comprising a glass sheet and light-guiding structure replaces the plastic structure, eliminating the need for a protection layer and enhancing structural strength, while using an optical clear adhesive and buffer material for adhesion and impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic light-guiding structure is used, then the manufacturing cost is reduced, but the strength and durability are insufficient
Solution Approach 1:
The patent changes the material parameter from plastic to glass for the light-guiding structure. This material substitution increases the strength and durability while maintaining manufacturability through established glass processing techniques, resolving the contradiction between low cost and high strength.
Solution Approach 2:
The patent employs a composite structure combining glass light-guiding elements with protective coatings and adhesive layers. This composite approach enhances the overall strength and durability while controlling manufacturing costs through efficient material selection and assembly processes.
2Strength
If a protection layer is added to protect the plastic light-guiding structure, then the strength is improved, but the thickness increases leading to inferior use feel
Solution Approach 1:
The patent extracts and eliminates the need for a separate protection layer by using inherently strong glass material for the light-guiding structure. The glass itself provides the necessary protection, removing the redundant protective layer and reducing overall thickness to improve use feel.
Solution Approach 2:
By changing the material from plastic to glass, the patent changes the inherent strength parameter, allowing the light-guiding structure to stand alone without additional protection layers, thus reducing thickness while maintaining or improving strength.
3Strength
If a protection layer is added to protect the plastic light-guiding structure, then the strength is improved, but the weight increases
Solution Approach 1:
The patent removes the redundant protection layer by using strong glass material that inherently provides the necessary protection. This extraction of the protective layer reduces the overall weight while maintaining or improving the strength characteristics.
Solution Approach 2:
The material parameter change from plastic to glass provides higher strength-to-weight ratio, allowing the light-guiding structure to achieve the required strength without additional protective layers, thus reducing weight.
4Ease of manufacture
If a plastic light-guiding structure is used, then the manufacturing cost is reduced, but the service life is short due to low strength
Solution Approach 1:
The patent changes the material parameter from plastic to glass, significantly improving the strength and durability parameters. This material substitution extends the service life while keeping manufacturing costs manageable through established glass processing techniques.
Solution Approach 2:
The patent uses composite material construction with glass light-guiding elements and appropriate adhesives and coatings. This composite approach enhances long-term durability and service life while maintaining cost-effectiveness through efficient material selection and assembly.
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 glass-based design reduces thickness and weight, improves durability, and provides a better writing feel, ensuring comfortable and long-lasting use with enhanced structural integrity.
Implementation Method 1
The adhesive layer is made of an optical clear adhesive and a buffer material
Implementation Method 2
The light-guiding structure serves to guide and transmit light uniformly to the image display unit
Data Source
AI summary
A front-light glass display module includes an image display unit, an adhesive layer, and a front-light unit. The adhesive layer is stacked on one side of the image display unit, and is made of an optical clear adhesive and a buffer material. The front-light unit is installed on the adhesive layer and remote to the image display unit. The front-light unit has a glass sheet and a light-guiding structure. The glass sheet is stacked on the adhesive layer. The light-guiding structure is installed on at least one side of the glass sheet that faces or faces away from the adhesive layer. The light-guiding structure guides and transmits light to the image display unit uniformly. The front-light unit uses the high-strength glass sheet to eliminate the need of a protection layer for the conventionally used plastic structure, thereby reducing the overall thickness and weight while saving manufacturing costs.