MIM Capacitor Heat Dissipation for Integrated Circuit Temperature Sensor Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Integrated circuit devices face challenges in minimizing the impact of heat from heat generation source circuits on temperature sensors, leading to fluctuations in temperature detection voltage and instability in oscillation frequency, while also requiring a reduction in device size and area.
Innovation Solution
Incorporating a capacitor with a Metal-Insulator-Metal (MIM) structure that overlaps the temperature sensor in a plan view, allowing heat from the heat generation source circuit to be dissipated externally, thereby reducing adverse effects on the temperature sensor and optimizing device area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the heat generation source circuit and temperature sensor are disposed close to each other for compact design, then the device area is reduced, but the heat from the heat generation source circuit adversely affects the temperature sensor causing temperature detection voltage fluctuations
Solution Approach 1:
A capacitor having a MIM (Metal-Insulator-Metal) structure is introduced as an intermediary component between the heat generation source circuit and the temperature sensor. The capacitor is electrically coupled to a pad for external coupling, and its structure allows heat from the heat generation source circuit to be dissipated externally through the pad, thereby protecting the temperature sensor from heat transmission while maintaining compact device area.
Solution Approach 2:
The capacitor having a MIM structure utilizes vertical stacking (third dimension) by forming metal-insulator-metal layers in the vertical direction above the substrate. This allows the capacitor to occupy vertical space rather than horizontal space, enabling heat dissipation functionality without increasing the planar device area, thus resolving the contradiction between compact design and heat isolation.
2Reliability
If the temperature sensor is isolated from the heat generation source circuit to prevent heat transmission, then temperature detection stability is improved, but the device area increases
Solution Approach 1:
The capacitor having a MIM structure serves as a mediator that provides thermal isolation between the heat generation source circuit and the temperature sensor. By being electrically coupled to the pad for external coupling, the capacitor creates a thermal management pathway that stabilizes the temperature sensor's operating environment without requiring large physical separation, thus maintaining temperature detection stability within a compact area.
Solution Approach 2:
The capacitor having a MIM structure performs multiple functions: it provides electrical coupling to the pad for external coupling, acts as a thermal management component to dissipate heat externally, and serves as a compact space-efficient element due to its vertical MIM structure. This multi-functionality allows temperature detection stability to be achieved without proportionally increasing device area.
3Object-affected harmful factors
If a capacitor with MIM structure is added to dissipate heat externally, then heat transmission to temperature sensor is suppressed, but device complexity increases
Solution Approach 1:
The capacitor having a MIM structure is introduced as a mediator component that suppresses heat transmission from the heat generation source circuit to the temperature sensor. The capacitor is electrically coupled to a pad for external coupling, which provides a pathway for heat dissipation. This intermediary approach effectively suppresses harmful heat transmission while maintaining relatively simple device architecture.
Solution Approach 2:
The capacitor having a MIM structure changes the thermal parameters of the device by providing an external heat dissipation pathway through the pad coupling. By altering the thermal conduction path and utilizing the vertical MIM structure, the system achieves heat transmission suppression without requiring complex active thermal management circuits, thus limiting the increase in device 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
This configuration effectively suppresses heat transmission to the temperature sensor, stabilizes temperature detection voltage, and reduces device area by utilizing the capacitor's structure to dissipate heat, enhancing the performance and compactness of integrated circuit devices.
Implementation Method 1
allowing heat from the heat generation source circuit to be dissipated externally
Implementation Method 2
suppresses heat transmission to the temperature sensor
Data Source
AI summary
An integrated circuit device includes a temperature sensor, a heat generation source circuit serving as a heat generation source, a pad for external coupling, and a capacitor having the MIM structure in which one electrode is electrically coupled to the pad for external coupling. In a plan view orthogonal to the substrate on which a circuit element is formed, the capacitor having the MIM structure and the temperature sensor overlap.