Optical Module Light Blocking Mold and Flexible Buffer Layer
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Solution Overview
Problem
Optical sensors in personal mobile devices are susceptible to undesired light leakage, leading to incorrect detection results and increased production costs due to the need for additional assembly processes and potential mismatches in light blocking structures.
Innovation Solution
An optical module with a light blocking mold and a flexible buffer layer integrally formed from different materials, eliminating the need for separate assembly and providing effective light blocking without additional assembly processes, using materials like rubber for the buffer layer to absorb light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a rubber shield is added to block light leakage, then light blocking performance is improved, but device complexity and assembly process increase
Solution Approach 1:
The patent combines the light blocking function and cushioning function into a single integrated buffer layer structure. The buffer layer is formed as one piece that simultaneously blocks light leakage from the LCD and provides mechanical cushioning between the glass layer and other structures, eliminating the need for separate rubber shield assembly.
Solution Approach 2:
The buffer layer serves multiple functions: it acts as a light blocking shield to prevent light leakage, provides mechanical cushioning to protect the glass layer from damage, and serves as a structural support element. This multi-functional design reduces the number of separate components needed in the device.
2Object-affected harmful factors
If a rubber shield is added to block light leakage, then light blocking performance is improved, but production cost increases
Solution Approach 1:
The buffer layer is formed as an integrated structure during the manufacturing process rather than being assembled separately. This reduces production steps and associated costs while maintaining effective light blocking performance.
3Object-affected harmful factors
If a rubber shield is added to block light leakage, then light blocking performance is improved, but production yield decreases
Solution Approach 1:
The integrated buffer layer structure eliminates mismatch issues between separate components. Since the buffer layer is formed as one piece that simultaneously provides light blocking and cushioning functions, there are no assembly gaps or positioning errors to reduce production yield.
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 effectively prevents light leakage, reduces production costs, and increases yield by integrating the light blocking mold and flexible buffer layer directly onto the package substrate, ensuring accurate light detection and motion sensing without additional assembly steps.
Implementation Method 1
using materials like rubber for the buffer layer to absorb light leakage
Data Source
AI summary
An optical module is disclosed. The optical module includes: a package substrate; an optical device disposed on the package substrate; a clear mold disposed on the package substrate and the optical device; an light blocking mold disposed on the package substrate, surrounding an optical device on the package substrate, and having an opening above the optical device; and a flexible buffer layer disposed on the light blocking mold. The light blocking mold and the flexible buffer layer are integrally formed of light blocking materials different from each other. An optical module including a plurality of optical devices is also disclosed.