Flash LED Module Shutter Driven by Magnetic Field
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Solution Overview
Problem
Existing flash LED modules in electronic devices are not aesthetically integrated with the device's exterior, as the fluorescent film of the LED device can be visible, necessitating a solution to match the exterior design while maintaining functionality.
Innovation Solution
A flash LED module design featuring a shutter driven by a magnetic field forming unit, power generation unit, and power transmission unit, which moves to expose or cover the light emitting region, ensuring the module's color matches the device's exterior and minimizing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the fluorescent film of the LED device is made visible to match the exterior design, then the aesthetic integration is improved, but the light emission function deteriorates
Solution Approach 1:
The optical window is divided into a light transmission region and a light blocking region. The shutter selectively covers the light transmission region when not in use, while the light blocking region maintains the exterior color match. This segmentation allows the flash module to achieve both aesthetic integration and light emission function.
Solution Approach 2:
The shutter is designed to move between covering and exposing the light transmission region. When the flash is not in use, the shutter covers the region to maintain aesthetic integration. When the flash is activated, the shutter moves to expose the region, allowing light emission. This dynamic mechanism resolves the contradiction between appearance and function.
2Shape
If the shutter driving unit is added to move the shutter, then the aesthetic integration is improved, but the device complexity increases
Solution Approach 1:
The shutter driving unit replaces traditional mechanical driving mechanisms with a magnetic field-based system. The magnetic field forming unit generates a magnetic field that interacts with the power generation unit to move the shutter, eliminating the need for complex mechanical gears, springs, or motors. This substitution significantly reduces structural complexity while achieving the desired aesthetic integration.
3Volume of moving object
If the module size is reduced for better integration, then the aesthetic integration is improved, but the light emission efficiency deteriorates
Solution Approach 1:
The patent utilizes the vertical dimension by positioning the shutter and light blocking layer in different spatial layers. The light blocking layer is placed below the LED device in the vertical direction, while the shutter is positioned above. This dimensional arrangement allows the module to maintain a compact footprint while preserving sufficient light emission efficiency, as the light blocking layer does not interfere with the light path when the shutter is open.
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 allows for a visually integrated flash LED module that matches the electronic device's exterior color, reducing the module's size and ensuring seamless integration while maintaining efficient light emission.
Implementation Method 1
a magnetic field forming unit configured to generate a magnetic field in response to application of a current
Implementation Method 2
a power generation unit having a permanent magnet and configured to generate power and/or movement in response to the magnetic field
Data Source
AI summary
A flash light emitting diode (LED) package includes: a first substrate including first and second opposing surfaces; an LED device on the first surface of the first substrate and having a light emitting region; a shutter on the LED device, and configured to expose and cover the light emitting region; a second substrate on the second surface of the first substrate; and a shutter driving unit on the second substrate and configured to move the shutter. The shutter driving unit includes: a magnetic field forming unit configured to generate a magnetic field in response to application of a current, a power generation unit having a permanent magnet and configured to generate power and/or movement in response to the magnetic field, and a power transmission unit connected between the shutter and the power generation unit and configured to transmit the power and/or movement to move the shutter.