Detachable Light Route Control Member for Low-Voltage Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing switchable light-shielding films are limited in use due to being fixed to specific devices and suffer reduced light-blocking characteristics at low power connection voltages, necessitating a portable and detachable solution.
Innovation Solution
A light route control member comprising a first and second substrate with electrodes, a light conversion unit, and a power supply unit, featuring a partition wall and receiving unit with light-absorbing particles that change transmittance based on voltage, allowing detachable use and control of viewing angles in multiple directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a switchable light-shielding film is fixed to a specific display device, then the viewing angle control function is achieved, but the range of use is limited
Solution Approach 1:
The light route control member is designed as a detachable component that can be separated from the display device. The member includes a first substrate with a first electrode, a second substrate with a second electrode, and a light conversion unit between them, allowing it to be removed and attached to different devices while maintaining its viewing angle control functionality.
Solution Approach 2:
The light route control member is designed to be universally applicable to different display devices. By making it detachable and portable with standardized power connection units, the same member can be used across multiple devices, enhancing adaptability while preserving the core viewing angle control function through its consistent structural design.
2Adaptability or versatility
If a portable switchable light-shielding film is used, then the range of use is expanded, but the light blocking characteristic is reduced due to low voltage
Solution Approach 1:
The light conversion unit's transmittance is changed by applying voltage, allowing the member to switch between light-blocking and light-transmitting states. The receiving unit includes light absorbing particles in a dispersion that respond to voltage changes, enabling effective light blocking even at low voltages from portable power sources.
Solution Approach 2:
The light conversion unit comprises a composite structure with a dispersion and light absorbing particles dispersed in the dispersion. This composite material design enables the receiving unit to achieve effective light blocking characteristics when voltage is applied, while maintaining portability and compatibility with low-voltage power sources.
3Reliability
If the receiving unit dimensions are optimized for low voltage operation, then light blocking characteristic is maintained, but the structure becomes more complex
Solution Approach 1:
The receiving unit has specific optimized dimensions (height of 15 μm to 25 μm and width of 1.5 μm to 2.5 μm) that are tailored for effective operation at low voltages. This localized optimization of the receiving unit's physical dimensions enables reliable light blocking characteristics without requiring complex overall device architecture.
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 provides a detachable and portable light route control member that maintains light-blocking characteristics at low voltages, enabling flexible use across different devices and environments by controlling viewing angles in four directions.
Implementation Method 1
the receiving unit includes a dispersion and a plurality of light absorbing particles dispersed in the dispersion
Data Source
AI summary
A light path control member according to an embodiment comprises: a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed below the second substrate; a light conversion unit disposed between the first electrode and the second electrode; and a power supply unit connected to the first electrode and the second electrode, wherein the light conversion unit includes a partition wall part and a receiving part that are alternately arranged, the receiving part has a light transmittance that changes in response to the application of a voltage, the receiving part includes a dispersion liquid and a plurality of light absorbing particles dispersed in the dispersion liquid, the height of the receiving part is 15 μm to 25 μm, the width of the receiving part is 1.5 μm to 2.5 μm, and the power supply unit includes a power connection part connecting an external power source and the light conversion unit, and a power switch part for turning on/off the transmission of the voltage.