Selectable Unit Capacitor Layout for Thin Storage Decoupling
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Solution Overview
Problem
As electronic systems become smaller, the challenge of reducing the thickness of storage systems, particularly in mobile devices, while maintaining effective voltage decoupling capabilities has not been adequately addressed.
Innovation Solution
A storage system incorporating a decoupling device with a plurality of unit capacitors, each comprising a first and second terminal, and a semiconductor substrate design that allows for selective connection of these capacitors to achieve various capacitances, including a buffer insulating layer, recesses in the substrate, and electrodes with dielectric layers to enhance voltage decoupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional decoupling capacitors are used, then voltage decoupling capability is maintained, but storage system thickness increases
Solution Approach 1:
The decoupling device is divided into multiple unit capacitors (first, second, third, and fourth unit capacitors) that can be selectively connected. Each unit capacitor has a standardized structure with top and bottom electrodes that can be combined in series or parallel configurations to achieve different capacitance values, thereby maintaining decoupling capability while reducing overall thickness.
Solution Approach 2:
The decoupling device incorporates selectable connection configurations where the effective capacitance can be dynamically adjusted by connecting unit capacitors in different arrangements (series, parallel, or combinations). This allows the system to adapt capacitance values based on specific voltage decoupling requirements while maintaining a compact form factor.
2Reliability
If multiple decoupling capacitors with various capacitances are provided, then voltage decoupling performance is improved, but device complexity increases
Solution Approach 1:
Instead of providing multiple complete decoupling capacitor components, the invention segments a single decoupling device into multiple unit capacitors. These unit capacitors share common structural elements (substrate, buffer layer, electrode patterns) but can be electrically configured to provide different capacitance values, thereby reducing overall device complexity while maintaining performance.
Solution Approach 2:
The unit capacitors are designed with universal structures that can serve multiple functions. The same basic unit capacitor design can be connected in different configurations (series, parallel, or selective combinations) to provide various capacitance values, eliminating the need for multiple specialized capacitor designs and reducing overall system complexity.
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 solution enables efficient voltage decoupling in a compact form factor, reducing the thickness of storage systems and improving performance in mobile devices by utilizing a decoupling device with integrated unit capacitors that can be selectively connected to achieve varying capacitances.
Implementation Method 1
Each of the unit capacitors may include a plurality of capacitor elements, a first terminal, and a second terminal
Implementation Method 2
a capacitor dielectric layer including dielectric patterns formed on the lower electrode patterns formed in the recesses
Data Source
AI summary
Provided is a storage system including a decoupling device having a plurality of unit capacitors. The storage system includes a storage device, a control device, and a decoupling device disposed on a circuit substrate. The storage device is configured to receive and store data from the control device. The control device is configured to generate an inner voltage. The decoupling device is connected to the control device and decouples the inner voltage. The decoupling device includes a plurality of unit capacitors constituting a plurality of decoupling capacitors. Each of the unit capacitors includes a plurality of capacitor elements, a first terminal, and a second terminal. Some of the unit capacitors are selectively connected with each other to constitute the decoupling capacitors having various capacitances.