Dummy Element Layout for Uniform Semiconductor Gate Spacing
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Solution Overview
Problem
The arrangement of semiconductor elements with varying power voltages in a semiconductor device results in extra space between elements, leading to deviations in the interval between gate structures and active regions, which affects the electrical characteristics and yield of the device.
Innovation Solution
Incorporating dummy elements with smaller active regions and gate structures between adjacent semiconductor elements to maintain uniform intervals and prevent expansion of active regions, thereby improving electrical characteristics and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If semiconductor elements are arranged on a substrate, then the device can be manufactured, but extra space is generated between elements causing deviations in intervals
Solution Approach 1:
A dummy element is introduced as an intermediary component between adjacent semiconductor elements. This dummy element occupies the extra space generated during arrangement and has gate structures that match the design rules of real elements, thereby maintaining uniform intervals without affecting the functionality of actual semiconductor elements.
2Manufacturing precision
If dummy elements are added to maintain uniform intervals, then manufacturing precision improves, but device complexity increases
Solution Approach 1:
The dummy element is designed as a non-functional placeholder that does not affect device performance. It is simplified in structure compared to real semiconductor elements, using the same basic fabrication processes but without active functionality, thereby minimizing the increase in device complexity while achieving the desired interval uniformity.
3Manufacturing precision
If dummy elements with large active regions are used, then interval uniformity is maintained, but the dummy elements occupy excessive space
Solution Approach 1:
The dummy element's active region is designed with localized properties - it has sufficient size to maintain the required intervals between gate structures of adjacent real elements, but is minimized to occupy only the necessary space. The gate structure of the dummy element is configured to match the design rules of surrounding elements, providing local quality consistency without excessive area occupation.
Data Source
AI summary
A semiconductor package includes a base chip; semiconductor chips stacked on the base chip; bumps, a lowermost bump of the bumps disposed between the base chip and a lowermost semiconductor chip of the semiconductor chips, and each of the bumps except the lowermost bump respectively disposed between the semiconductor chips; organic material layers, a lowermost organic material layer of the organic material layers disposed between the base chip and the lowermost semiconductor chip, and each of organic material layers except the lowermost organic material layer respectively disposed between the plurality of semiconductor chips; underfill layers respectively surrounding the plurality of bumps, the underfill layers extending between the base chip and the lowermost semiconductor chip and between the semiconductor chips; and an encapsulant covering the base chip, the semiconductor chips, and the underfill layers.