Heat-ray Reflecting Substrate With Radio-wave Transmissive Slit Patterns
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Solution Overview
Problem
Existing techniques face challenges in preventing interruptions between patterns formed in different steps on heat-ray reflecting substrates, particularly for parallel line patterns, which limits freedom in pattern selection and affects radio-wave transmissibility.
Innovation Solution
The development of a heat-ray reflecting substrate with a radio-wave transmitting region featuring a first repeating pattern composed of slit portions, where each unit pattern includes a line portion and a connection portion extending in a different axis direction, allowing for reliable connection of patterns across multiple processing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heat-ray reflecting film is partially removed by laser etching to form a periodic pattern for radio-wave transmission, then radio-wave transmissibility is improved, but the pattern may be interrupted at joints between patterns formed in different steps, worsening reliability
Solution Approach 1:
The patent applies preliminary action by designing the pattern geometry in advance to accommodate potential positioning errors. The connection portion is designed to extend in a direction different from the main line portion, creating an overlapping region that anticipates and compensates for possible deviations in subsequent laser processing steps, ensuring pattern continuity without requiring perfect positioning precision.
Solution Approach 2:
The patent employs dimensionality change by introducing a connection portion that extends in a second axis direction different from the first axis direction of the main line portion. This creates a two-dimensional geometric configuration from a primarily one-dimensional pattern, allowing the pattern to bridge positioning errors through spatial overlap in multiple dimensions.
2Area of stationary object
If multiple patterns are arranged continuously to cover a large region, then the entire desired region can be processed, but interruptions or deviations may occur at joints between patterns formed in different steps
Solution Approach 1:
The pattern design preliminarily accounts for positioning errors by incorporating connection portions that extend beyond the main line portions. This geometric preparation ensures that even if subsequent laser processing steps exhibit positioning deviations, the patterns will overlap in the connection regions rather than interrupt, maintaining manufacturing precision across large areas.
Solution Approach 2:
The patent applies beforehand cushioning by creating overlapping connection portions that act as a buffer zone against positioning errors. These connection portions extend in a different axis direction and create a geometric buffer that absorbs potential deviations, ensuring pattern continuity even when processing large regions that require multiple laser processing steps.
3Adaptability or versatility
If patterns are connected by overlapping arrangement to prevent interruptions, then radio-wave transmissibility is maintained, but freedom in pattern selection is limited
Solution Approach 1:
The patent achieves both pattern freedom and reliability by utilizing dimensionality change. The connection portion extends in a second axis direction different from the first axis direction of the main line portion, creating a geometric configuration that ensures overlap and continuity. This two-dimensional approach allows various pattern designs (parallel lines, grids, etc.) to be implemented while maintaining radio-wave transmissibility through the inherent geometric overlap.
Solution Approach 2:
The patent applies asymmetry by designing the connection portion with a different geometric configuration than the main line portion. The connection portion extends in a different axis direction and creates an asymmetric overlapping region that ensures pattern continuity while allowing freedom in the overall pattern design. This asymmetric geometric configuration is particularly effective for maintaining radio-wave transmissibility.
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 solution enhances the reliability of pattern connection across multiple steps, offering high freedom in selecting patterns for radio-wave transmitting regions while maintaining excellent radio-wave transmissibility and aesthetic appearance.
Implementation Method 1
impart a function of reflecting heat rays (infrared rays) to windows
Implementation Method 2
reflecting heat rays (infrared rays) to windows
Implementation Method 3
partially removing a heat-ray reflecting film coating a substrate by laser etching
Data Source
Figure 1(A)~1(C)
Figure 2
Figure 3
AI summary
A heat-ray reflecting substrate (10) comprises a dielectric substrate (11) and a heat-ray reflecting film (13) on at least one principal surface of the dielectric substrate. The heat-ray reflecting substrate includes a radio wave transmissive region (A) in at least a section on the at least one principal surface in plan view. The radio wave transmissive region (A) includes a first repetitive pattern (15) that is formed by a slit section (14) in which no heat-ray reflecting film is present. The first repetitive pattern (15) includes at least two first unit patterns (151a, 151b) that extend along a first axial direction. Each of the first unit patterns (151a, 151b) includes: a first line section (154a, 154b) that extends in the first axial direction; and a first connection section (155a, 155b) having a prescribed configuration.