Ion Implantation Refractive Index Control in Color Filter Arrays
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Solution Overview
Problem
Current optical elements with color filters and microlenses face limitations in quantum effect performance due to the properties of color filter materials and challenges in increasing the refractive index, particularly during the etching process, which leads to processing difficulties and pollution issues.
Innovation Solution
An optical element with an array structure featuring an implant area and a non-implant area, where the implant area has a higher refractive index than the non-implant area, achieved through ion implantation with nitrogen or silicon ions, enhancing the refractive index and maintaining transmittance, thereby improving the light guide or condenser effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If metal oxide such as titanium dioxide is added into the microlens material to increase the refractive index, then the refractive index is improved, but processing difficulty increases and pollution is generated during the etching process
Solution Approach 1:
The patent changes the material composition parameter by replacing metal oxide additives with a polymer matrix system that achieves high refractive index through molecular structure design rather than particulate fillers, thereby improving refractive index while eliminating etching pollution and processing difficulties
Solution Approach 2:
The patent employs composite material design by combining polymer base materials with specific high-refractive-index components in a matrix structure, achieving enhanced optical properties without the harmful effects of traditional metal oxide fillers during manufacturing
2Illumination intensity
If metal oxide such as titanium dioxide is added into the microlens material to increase the refractive index, then the refractive index is improved, but pollution is generated during the etching process
Solution Approach 1:
The patent fundamentally changes the material parameter from metal oxide-based refractive index enhancement to a polymer-based system, which eliminates the generation of harmful pollution during etching processes while maintaining high refractive index performance
Solution Approach 2:
The patent converts the previously harmful metal oxide additives into a beneficial polymer-based system that naturally provides high refractive index without generating pollution, effectively turning the manufacturing pollution problem into a clean processing solution
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 increases the refractive index of color filters and microlenses, enhancing the quantum effect performance while minimizing processing difficulties and pollution, by controlling the implant concentration and energy to achieve optimal refractive indices and transmittance.
Implementation Method 1
the implant area has a first refractive index and the non-implant area has a second refractive index, and the first refractive index is greater than the second refractive index... achieved through ion implantation with nitrogen or silicon ions, enhancing the refractive index and maintaining transmittance
Data Source
AI summary
An optical element is provided. The optical element includes an array structure having an implant area and a non-implant area. The non-implant area is adjacent to the implant area. The implant area has an implant concentration ranging from 1×1013 cm−2 to 6.7×1013 cm−2. The array structure is a color filter array including a plurality of color filters. At least one of the color filters has the implant area. The implant area has a first refractive index. The non-implant area has a second refractive index. The first refractive index is greater than the second refractive index.