Semiconductor Element Transfer via Intermediate Substrate
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Solution Overview
Problem
Conventional methods for fabricating semiconductor devices are inefficient in using first substrates, leading to increased fabrication costs and reduced throughput due to the limited utilization of substrate area and increased relocation steps.
Innovation Solution
A method involving forming a first element region on a first substrate, relocating elements to a holding member, rearranging them on an intermediate substrate with a different shape, and dispersing them onto a second substrate, allowing for more efficient use of the first substrate and improved throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If elements are arranged in a rectangular element region on a circular first substrate, then the element arrangement is simple and easy to manufacture, but a large area of the substrate is left unused, increasing fabrication cost
Solution Approach 1:
The patent transitions from a two-dimensional rectangular element arrangement to a three-dimensional stacked arrangement by introducing an intermediate substrate. Elements are first arranged on the first substrate, then transferred to the intermediate substrate where additional elements are stacked above them, effectively utilizing vertical space to increase substrate area utilization without complicating the initial element arrangement process
Solution Approach 2:
The patent introduces an intermediate substrate as a mediator between the first substrate and the final product. This intermediate substrate receives elements from the first substrate and allows for additional elements to be stacked above them, enabling efficient use of the first substrate area while facilitating complex element configurations without directly modifying the initial rectangular arrangement
2Device complexity
If elements are relocated from the first substrate directly to the second substrate, then the process is simple, but the number of positioning and relocation movements is increased, reducing throughput
Solution Approach 1:
The patent performs preliminary arrangement of elements on the intermediate substrate before final relocation to the second substrate. Elements are first transferred to the intermediate substrate in an organized manner, and additional elements are stacked above them in advance, so that when the final relocation occurs, the elements are already in their correct positions and orientations, reducing the complexity and number of movements required during final placement
3Loss of substance
If the first substrate size is increased to improve area utilization, then more elements can be formed, but the substrate handling and relocation becomes more difficult, reducing throughput
Solution Approach 1:
The patent segments the element formation process across multiple substrates (first substrate, intermediate substrate) rather than attempting to form all elements on a single large first substrate. This segmentation allows each substrate to remain at a manageable size for handling while achieving high overall area utilization through the stacked arrangement on the intermediate substrate
Data Source
AI summary
A method for fabricating a semiconductor device includes a first step of forming, on a first substrate, a first element region in which a plurality of elements are collectively arranged, a second step of relocating the plurality of elements formed on the first substrate to a holding member in the same arrangement as in the first element region to have the plurality of elements held on the holding member, a third step of rearranging the plurality of elements held on the holding member and having the plurality of elements held on an intermediate substrate, thereby forming a second element region having a shape different from a shape of the first element region on the intermediate substrate, and a fourth step of dispersing the plurality of elements held on the intermediate substrate and adhering the plurality of elements to a second substrate.