Vehicle Glass Module With Visible Adhesive Check for Sensor Mounting

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Solution Overview

Problem

The attachment of information acquisition devices in vehicles is often secured with double-sided adhesive tape and adhesive, but the adhesive is hidden by a mask layer, making it difficult to confirm if the adhesive is properly applied, leading to potential detachment risks.

Innovation Solution

A glass plate module with laminated glass and a mask layer, featuring adhesive confirmation portions that allow visibility of the adhesive from the vehicle interior, ensuring proper adhesion through first and second adhesion means, including double-sided adhesive tape and preliminary fixing before curing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If separate production and assembly steps are used for glass plates with functional layers, then manufacturing flexibility is maintained, but production time and costs increase

Engineering Contradiction:
Improveproduction timeVSAvoidproduction process complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent combines multiple functional layers (conductive layer, transparent resin layer, ITO layer) and the glass plate into a single integrated structure that can be produced in one continuous process. The functional layers are formed directly on the glass plate substrate during the same production run, eliminating separate assembly steps and reducing overall production time while maintaining manufacturing flexibility.

Inventive Principle:
Principle #5Merging (Combining)

2Device complexity

If functional layers are integrated into the glass plate structure, then module assembly is simplified, but manufacturing precision requirements increase

Engineering Contradiction:
Improvemodule structure complexityVSAvoidlayer formation precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent segments the production process into distinct zones within the same production line: a first production line forms the conductive layer and transparent resin layer, while a second production line forms the ITO layer. This segmentation allows each layer to be manufactured with optimized precision controls specific to its requirements, while the overall module structure remains integrated and simplified.

Inventive Principle:
Principle #1Segmentation

3Manufacturing precision

If multiple production lines are used for different functional layers, then manufacturing precision is improved, but device complexity increases

Engineering Contradiction:
Improvelayer production precisionVSAvoidproduction line complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent designs the production system so that multiple production lines perform overlapping functions. Both the first and second production lines can form various types of functional layers (conductive layers, transparent resin layers, ITO layers) on different glass plates. This multi-functionality allows precise control of each layer while maintaining a unified production system architecture, reducing overall device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3330132B1Glass plate module
Publication Date: 2026.04.29 NIPPON SHEET GLASS CO LTD
  • EP3330132B1 patent drawingFigure 1~2
  • EP3330132B1 patent drawingFigure 3
  • EP3330132B1 patent drawingFigure 4~5

AI summary

The present invention provides a glass plate module to be attached to a vehicle. The glass plate module includes laminated glass in which an outer glass plate, an interlayer, and an inner glass plate are layered in this order; a mask layer that is provided on the laminated glass and blocks a field of vision from outside; and an attachment member that is attached to a portion corresponding to the mask layer on the inner glass plate with at least a first adhesion means and a second adhesion means and configured to support an information acquisition device for acquiring information from outside of a vehicle. The first adhesion means includes adhesive at at least one location. The second adhesion means is configured such that the adhesive conducts preliminary fixing prior to curing. The attachment member includes a fixation portion that faces the mask layer and has a bonding surface provided with the adhesion means. The fixation portion includes at least one adhesive confirmation portion through which the adhesive applied to the bonding surface can be seen from the vehicle interior side.