Ejection Device Housing with Translucent Region for Component Positioning
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Solution Overview
Problem
The challenge is to precisely position electronic components relative to an ejection device during transfer, as existing methods struggle with accuracy due to components being covered and the narrow gap between the carrier foil and substrate, leading to potential misalignment and inaccurate placement.
Innovation Solution
A device with a light-transmissive area in its housing allows for image data acquisition of the electronic components, enabling precise detection and correction of their position before transfer, using actuators to adjust the carrier and ejection device relative to each other, thus maintaining throughput without additional travel distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the ejection device and carrier film cover the electronic components during transfer, then the transfer process can be performed, but the position of the electronic components and bonding position cannot be detected optically
Solution Approach 1:
The housing is divided into two functional zones: a covered region for mechanical transfer operations and a light-transmissive area for optical detection. This segmentation allows the system to perform both transfer and detection functions without mutual interference, enabling position measurement while maintaining the protective coverage structure.
Solution Approach 2:
A light-transmissive area is introduced as an intermediary element in the housing structure. This area allows optical signals to pass through the housing wall, enabling the image data acquisition device to detect electronic components through what would otherwise be an opaque barrier, thus solving the detection problem without removing the protective housing structure.
2Productivity
If the gap between carrier foil and substrate is made narrow for compact design, then space is saved, but optical detection of component positions becomes impossible
Solution Approach 1:
The light-transmissive area acts as an intermediary that enables optical detection through the housing wall. By positioning this area to align with the component transfer zone, the system can detect positions through the housing without requiring a larger gap between carrier foil and substrate, thus maintaining compact design while enabling detection.
Solution Approach 2:
Instead of trying to detect positions from the narrow vertical gap between carrier foil and substrate, the detection is performed through the horizontal light-transmissive area in the housing wall. This dimensional shift from vertical to horizontal detection path enables position measurement without increasing the vertical gap size.
3Manufacturing precision
If position correction is performed by moving the first carrier and ejection device, then alignment accuracy is improved, but additional travel distance may reduce throughput
Solution Approach 1:
Position detection and correction are performed during the transfer process itself, before the component is finally placed on the substrate. By detecting positions through the light-transmissive area and making corrections during the transfer motion, the system eliminates the need for separate positioning steps, thus maintaining throughput while achieving high precision.
Solution Approach 2:
The detection and correction functions are merged into the transfer process. The same motion that transfers the component from carrier to substrate is also used to perform position correction based on detected offsets. This combining of functions eliminates additional travel distances and maintains high throughput while achieving precise alignment.
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
This solution ensures precise alignment and accurate transfer of electronic components, even for small components, by allowing for accurate detection and correction of their position, reducing the likelihood of misplacement and maintaining high throughput.
Implementation Method 1
a first light-transmissive area, in order that the image data acquisition device can acquire image data of a region through the first translucent area of the housing
Data Source
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AI summary
An apparatus and a method for positioning electronic components to be transferred in relation to a discharging device are described. The discharging device concerned has a slide for at least one electronic component and a housing surrounding the slide, wherein the housing has a first translucent region. The electronic components to be transferred are provided by a first carrier, which comprises a first side, facing the discharging device, and a second side, facing away from the discharging device, wherein a multiplicity of the electronic components are provided on the second side. At least one image data acquisition device is set up for acquiring through the first translucent region of the housing image data of a region in which the slide is set up for interacting with the at least one electronic component. A control is set up for determining from the acquired image data positional data of the electronic component to be transferred and generating control commands on the basis of the positional data; and at least one actuator is set up for moving the first carrier and the discharging device in relation to each other on the basis of the control commands, in order to change an offset between a longitudinal axis of the slide and a centre axis of the electronic component to be transferred.