Light Route Control Member Protrusions Prevent Particle Settling
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Solution Overview
Problem
Light route control members face challenges in maintaining viewing angle control characteristics over time due to settling of light absorbing particles, which reduces their dispersibility and effectiveness.
Innovation Solution
Incorporating protrusions within the receiving unit that extend in directions different from the partition walls to inhibit particle aggregation, combined with a filter layer for air discharge during dispersion injection, which improves filling properties and reduces the bezel area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light absorbing particles are dispersed in the receiving unit, then viewing angle control is achieved, but particles settle in gravitational direction over time reducing effectiveness
Solution Approach 1:
The patent introduces protrusions that extend in directions different from the partition wall extension direction, creating a three-dimensional structure within the receiving unit. This multi-directional arrangement prevents particles from settling in a single gravitational direction, maintaining dispersibility and viewing angle control characteristics over time.
2Manufacturing precision
If filter layer is added for air discharge, then filling properties improve, but device complexity increases
Solution Approach 1:
The patent incorporates a filter layer with porous structure that allows air discharge during dispersion injection while maintaining a relatively simple overall device structure. The porous filter layer enables selective passage of air bubbles while retaining the dispersion medium, improving filling properties without significantly increasing device complexity.
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 maintains viewing angle control characteristics over time by preventing particle aggregation and improving filling properties, allowing for stable operation and reduced bezel area.
Implementation Method 1
capable of suppressing the settling of light absorbing particles in the gravitational direction
Implementation Method 2
a filter layer for air discharge during dispersion injection
Data Source
AI summary
An optical path control member, according to one embodiment, comprises: a first substrate; a first electrode disposed on the upper surface of the first substrate; a second substrate disposed above the first substrate; a second electrode disposed on the lower surface of the second substrate; and a light conversion unit disposed between the first electrode and the second electrode, wherein the light conversion unit comprises a partition wall part and an accommodation part which are alternately arranged. The accommodation part: has a light transmittance that varies according to the application of a voltage; comprises a dispersion liquid and a plurality of light-absorbing particles dispersed in the dispersion liquid; and has at least one protrusion part arranged therein. The protrusion part: makes contact with the partition wall part; and is extendedly arranged in a direction different from the extending direction of the partition wall part.