Integrated Touch Light-Guiding Module for Thin Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional reflective display devices with touch features are bulky and costly due to a multi-layered adhering structure, which complicates manufacturing and fails to meet the requirements of being thin and lightweight for portable applications.
Innovation Solution
A touch front light module comprising a glass board with a touch layer and microstructure layer for light scattering, integrated with a light-emitting unit on the lateral side, and a protective layer, providing light-guiding, touch control, and protection functions while reducing thickness and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-layered adhering structure with optical adhesive layers is used for adherence between display module, light-guiding plate, touch module, and protective glass board, then reliable adherence is achieved, but manufacturing cost increases and production process becomes complicated
Solution Approach 1:
The patent merges the light-guiding plate and touch module into a single integrated component where the touch module is directly formed on the light-guiding plate. This eliminates the need for separate optical adhesive layers between these two components, reducing manufacturing complexity while maintaining adherence reliability through the integrated structure.
2Illumination intensity
If a thick light-guiding plate made of plastic material using injection-molding is used, then light-guiding function is achieved, but the overall device thickness increases
Solution Approach 1:
The patent changes the material parameter from plastic to glass for the light-guiding plate, enabling thinner design while maintaining light-guiding functionality. The glass material allows for reduced thickness without compromising the light-guiding effect, thus reducing overall device thickness while preserving illumination performance.
3Adaptability or versatility
If multiple separate components (light-guiding plate, touch module, protective glass board) are used, then each component can be optimized for its specific function, but the overall device weight increases
Solution Approach 1:
The patent combines the light-guiding plate and touch module into one integrated component, reducing the total number of parts. This merging eliminates the need for multiple optical adhesive layers and reduces overall device weight while maintaining the specialized functions of both light-guiding and touch control through the integrated design.
4Adaptability or versatility
If a conventional multi-component structure is used, then comprehensive functions (display, touch control, protection) are achieved, but the device fails to meet thin and lightweight requirements for portable applications
Solution Approach 1:
The patent integrates multiple functions into fewer components: the light-guiding plate and touch module are merged, and the protective glass board is directly adhered to the integrated component. This reduces overall device weight and thickness while maintaining complete functionality including display, touch control, and protection through the streamlined structure.
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 solution simplifies manufacturing, reduces weight, and enhances the portability of touch display devices by integrating light-guiding, touch control, and protection functions into a single, thinner module, improving efficiency and user interaction.
Implementation Method 1
The microstructure layer is disposed on the bottom surface of the glass board and has a plurality of microstructures that are configured for light scattering
Data Source
AI summary
A touch front light module includes a touch light-guiding unit, a light-emitting unit, and a protective layer. The touch light-guiding unit includes a glass board, a touch layer disposed on a top surface of the glass board, and a microstructure layer disposed on a bottom surface of the glass board and which has a plurality of microstructures for light scattering. The light-emitting unit is disposed on a lateral side of the touch light-guiding unit and is configured to emit light to be incident on the lateral surface of the glass board. The protective layer is disposed on the touch layer. A touch display device including a display module and the touch front light module disposed on the display module is also disclosed.