Concentric Vibration Layout for Large-Substrate Micro Device Transfer
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Solution Overview
Problem
Existing technologies face challenges in efficiently transferring and arranging multiple micro devices on a large substrate using sound-based vibration sources, as they struggle to apply these technologies effectively in environments requiring the movement of multiple devices.
Innovation Solution
A device transfer apparatus is designed with a polygonal container and multiple vibration sources arranged in concentric circles, controlled by a processor to output specific vibration frequencies. This apparatus uses a combination of first and second group vibration sources, arranged alternately, to transfer micro devices into device holes on a substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If sound-based vibration sources are used to transfer micro devices, then power consumption is reduced compared to optical technology, but it becomes difficult to apply the technology to environments where multiple devices are moved on a large substrate
Solution Approach 1:
The system divides the large substrate transfer task into multiple zones by arranging vibration sources in concentric circles. The first group vibration sources operate on an inner circle while the second group vibration sources operate on an outer circle, allowing independent control of different regions to efficiently handle multiple devices across large substrates
Solution Approach 2:
The patent transitions from a single-circle vibration arrangement to a multi-dimensional concentric circle configuration. By adding radial dimension (multiple circles with different radii) and angular dimension (multiple vibration sources distributed around circles), the system gains enhanced control capability for moving multiple devices simultaneously across large substrate areas
2Manufacturing precision
If multiple vibration sources are arranged in concentric circles with different radii, then precise control over micro device movement and arrangement is achieved, but the device complexity increases
Solution Approach 1:
The concentric circle arrangement of vibration sources serves multiple functions simultaneously: the first group vibration sources on the inner circle control devices in the central region, while the second group vibration sources on the outer circle control devices in the peripheral region. This multi-functional arrangement enables precise control of multiple devices across the entire substrate without requiring separate control systems for different zones
Solution Approach 2:
The system employs dynamic control of vibration sources by independently adjusting the operation of first and second group vibration sources. The processor can selectively activate or deactivate specific vibration sources based on the number and position of devices to be transferred, adapting the system complexity to match the actual task requirements rather than operating at maximum complexity continuously
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 apparatus achieves precise control over the movement and arrangement of micro devices, enabling efficient transfer and patterning on a substrate, thereby overcoming the limitations of existing technologies.
Implementation Method 1
a plurality of vibration sources configured to generate vibration and transfer the vibration to a fluid in the container
Data Source
AI summary
A device transfer apparatus is provided. The device transfer apparatus includes a container of a polygonal shape which contains a substrate including device holes, vibration sources which generates vibration and transfers the vibration to a fluid in the container, and a processor which controls outputs of the vibration sources. The vibration sources include first group vibration sources arranged on a circumference of a first circle having a radius of a first distance from a central point, and second group vibration sources arranged on a circumference of a second circle which is concentric with the first circle and has a radius of a second distance that is longer than the first distance. The container is arranged on the central point and contains a fluid and micro devices distributed in the fluid. The processor controls the first group vibration sources and the second group vibration sources to output vibration.