Bonding Chip Extension Pattern for Semiconductor Warpage Control
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Solution Overview
Problem
Existing semiconductor devices face challenges in increasing data storage capacity while maintaining reliability and productivity, particularly due to warpage issues that can lead to defects and bonding misalignment during the manufacturing process.
Innovation Solution
The introduction of an extension pattern on the dummy structure within the bonding semiconductor device, which is designed to reduce or compensate for warpage by adjusting its material, volume, width, thickness, shape, and position, allowing for precise control during the etching process without requiring additional space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bonding structure is enhanced to improve reliability, then warpage control is improved, but the device complexity increases
Solution Approach 1:
The bonding structure is segmented into multiple functional components: a pad structure for electrical connection, a dummy structure for stress compensation, and an extension pattern for warpage control. Each component performs a specific function, allowing the overall structure to achieve high reliability without excessive complexity by dividing the problem into manageable segments.
Solution Approach 2:
The extension pattern serves multiple functions simultaneously: it acts as a structural support element, a warpage compensation mechanism, and a placeholder for future circuit extensions. This multi-functionality reduces the need for separate components, thereby improving reliability while controlling device complexity.
2Manufacturing precision
If the dummy structure is extended to compensate for warpage, then bonding precision is improved, but the manufacturing process complexity increases
Solution Approach 1:
The extension pattern is formed in advance during the manufacturing process, before the actual bonding operation. This preliminary action allows warpage compensation to be built into the structure beforehand, ensuring bonding precision is achieved without requiring complex real-time adjustments or additional manufacturing steps.
Solution Approach 2:
The extension pattern allows for adjustment of geometric parameters (length, width, thickness) and material properties to control warpage compensation. By changing these parameters, the bonding precision can be optimized for different device configurations without fundamentally altering the manufacturing process complexity.
3Productivity
If the extension pattern is added to reduce warpage, then productivity is improved, but the device complexity increases
Solution Approach 1:
The extension pattern is merged with the existing dummy structure and pad structure, forming an integrated bonding structure. This merging approach allows warpage control functionality to be added without requiring separate manufacturing processes or additional discrete components, thereby improving productivity while minimizing the increase in device complexity.
Data Source
AI summary
A semiconductor chip for a bonding semiconductor device includes a substrate, a wiring portion on the substrate, and a bonding portion on the wiring portion. The bonding portion includes an insulation layer, a bonding structure, and an extension pattern. The bonding structure includes a pad structure passing through the insulation layer and a dummy structure passing through a partial portion of the insulation layer. The extension pattern is at a lower portion of the dummy structure that is adjacent to the wiring portion and includes an extension portion extending in one direction in a plan view.