Iodine Polarizer With Low-Concentration Camera Hole Portion
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Solution Overview
Problem
Existing image display apparatus, such as smartphones and notebook PCs, face challenges in improving camera performance and accommodating diverse shapes and functionalities, particularly in achieving optimal polarization performance for camera holes.
Innovation Solution
A polarizer with a resin film of 13 μm or less thickness, containing iodine, is developed with a low-concentration portion having a lower iodine content than the rest, providing high transmittance and polarization degree, and a method involving a basic solution treatment to form a non-polarizing, circular low-concentration portion for camera holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional polarizer with uniform iodine distribution is used, then polarization performance is maintained, but transmission property at camera hole portions is insufficient
Solution Approach 1:
The patent applies local quality by creating a low-concentration portion with reduced iodine content specifically at the camera hole portion, while maintaining normal iodine concentration in other areas. This localized modification allows the camera hole area to have higher transmission property while the rest of the polarizer maintains its polarization performance.
2Manufacturing precision
If the resin film thickness is increased, then manufacturing stability is improved, but surface smoothness and polarization performance deteriorate
Solution Approach 1:
The patent changes the thickness parameter of the resin film to 13 μm or less, which optimizes both surface smoothness and polarization performance while maintaining manufacturing stability. This parameter adjustment resolves the contradiction between surface quality and ease of manufacture.
3Reliability
If the resin film thickness is decreased, then surface smoothness and polarization performance are improved, but manufacturing stability deteriorates
Solution Approach 1:
The patent establishes a specific thickness parameter of 13 μm or less for the resin film, which has been optimized to achieve high polarization degree (99.95% or more) and excellent surface smoothness while maintaining adequate manufacturing stability. This parameter setting balances the contradiction between performance and manufacturability.
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 polarizer enhances camera performance by optimizing brightness and image quality, preventing distortion and ensuring transmission properties for both reception-type and emission-type electronic devices.
Implementation Method 1
the low-concentration portion is formed by bringing a basic solution into contact with the resin film containing the iodine
Implementation Method 2
The resin film has a single axis transmittance of 42.0% or more and a polarization degree of 99.95% or more
Data Source
AI summary
A polarizer according to an embodiment of the present invention includes a resin film having a thickness of 13 μm or less and containing iodine. The resin film has formed therein a low-concentration portion having a content of the iodine lower than that of another portion.