Resin Member Segmentation for Optical Gap Measurement
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Solution Overview
Problem
Existing electronic components in imaging and display apparatuses face challenges in accurately measuring the gap between the element plate and the counter plate due to light reflection noise at material interfaces, especially when the refractive index difference between the counter plate and the resin member is small, making optical gap measurement difficult.
Innovation Solution
The solution involves using a first and second resin member with refractive indices differing by 0.2 or more from the counter plate, allowing for gap measurement by optical methods, and arranging resin members in a configuration that enables stable support and accurate light reflection detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a resin member with refractive index close to the counter plate is used to prevent light reflection, then light reflection noise is reduced, but gap measurement precision deteriorates
Solution Approach 1:
The resin member is divided into two distinct regions: a first resin member filling the gap between the element plate and counter plate with refractive index close to the counter plate to reduce light reflection noise, and a second resin member surrounding the first resin member with refractive index different from the counter plate to enable optical gap measurement. This segmentation allows each region to fulfill its specific function without interfering with the other.
Solution Approach 2:
Different regions of the resin member are assigned different refractive index properties tailored to their specific functions. The first resin member in the gap region has refractive index matched to the counter plate for optical quality, while the second resin member in the surrounding region has refractive index optimized for measurement visibility. This local differentiation resolves the contradiction between reducing reflection noise and enabling measurement.
2Object-affected harmful factors
If the refractive index difference between counter plate and resin member is small, then light reflection is reduced, but detection of light reflection for measurement becomes difficult
Solution Approach 1:
The resin member is segmented into two functional zones with different refractive index characteristics. The first resin member maintains small refractive index difference with the counter plate to minimize unwanted light reflection, while the second resin member has large refractive index difference to provide detectable light reflection for optical gap measurement.
Solution Approach 2:
The second resin member acts as an intermediary medium that facilitates the detection process. By having a refractive index different from the counter plate, it creates a detectable optical interface that serves as a reference for measuring the gap, while the first resin member maintains the optical quality by matching the counter plate's refractive index.
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 enables reliable and accurate measurement of the gap between the counter plate and the element plate, improving the reliability of the electronic component by reducing light reflection noise and preventing voids or refractive index changes during bonding.
Implementation Method 1
measuring a gap between the counter plate and the element plate based on light reflected between the element plate and the second resin member and light reflected between the counter plate and the second resin member
Implementation Method 2
a first resin member disposed between at least one of the element region and the peripheral region and the counter plate, and a second resin member disposed between the peripheral region and the counter plate
Data Source
AI summary
A method includes preparing an electronic component that includes an element plate including an element region provided with a functional element and a peripheral region disposed around the element region, a counter plate facing the element region and the peripheral region, a first resin member disposed between at least one of the element region and the peripheral region and the counter plate, and a second resin member disposed between the peripheral region and the counter plate, applying light to the element plate through the counter plate and the second resin member, and measuring a gap between the counter plate and the element plate based on light reflected between the element plate and the second resin member and light reflected between the counter plate and the second resin member.