Electrostatic Chuck Encapsulation Coating for Oxidation Resistance

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Solution Overview

Problem

Electrostatic chucks with organic material layers are prone to premature failure due to exposure to oxidizing environments, such as ozone treatments or H2 plasma, leading to degradation and wear.

Innovation Solution

An encapsulation coating is applied via vapor deposition to protect organic material layers, forming a conformal layer that seals and encapsulates these layers, extending the durability and lifetime of the electrostatic chuck.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If organic material layers are used in electrostatic chucks, then ease of manufacture and bonding properties are improved, but reliability deteriorates due to degradation from oxidizing environments

Engineering Contradiction:

Improveease of manufactureVSAvoidreliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

An encapsulation coating layer is introduced as an intermediary between the organic material layer and the oxidizing environment. This coating acts as a protective barrier that prevents harmful species (ozone, H2 plasma) from直接接触 the organic material, thereby maintaining reliability while preserving the manufacturing advantages of organic layers.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The encapsulation coating creates an inert protective environment around the organic material layer. By forming a conformal barrier that seals the organic material from external oxidizing conditions, the coating effectively isolates the sensitive organic layer from degradation, allowing it to maintain its beneficial properties without exposure to harmful environments.

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

2Productivity

If organic material layers are exposed to oxidizing environments, then productivity is maintained through continuous operation, but duration of action deteriorates due to premature failure

Engineering Contradiction:

ImproveproductivityVSAvoidlifespan

Core Design Contradiction:

ProductivityVSDuration of action of stationary object

Solution Approach 1:

The encapsulation coating is applied in advance to protect the organic material layer before it is exposed to oxidizing environments during continuous operation. This preliminary protective action ensures that the organic material maintains its integrity throughout the operational lifecycle, extending the duration of action without compromising productivity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The encapsulation coating serves as a beforehand cushioning layer that absorbs and protects the organic material from the damaging effects of oxidizing environments. By providing this protective barrier in advance, the system can maintain continuous operation at full productivity while the coating shields the organic material from degradation that would otherwise limit its lifespan.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If encapsulation coating is applied to protect organic material layers, then reliability is improved, but device complexity increases

Engineering Contradiction:

ImprovereliabilityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The encapsulation coating is implemented as a thin film layer that conformally covers the organic material layer. This thin film approach provides effective protection against oxidizing environments while adding minimal structural complexity. The conformal nature of the coating ensures complete coverage without requiring complex application processes or additional components.

Inventive Principle:

Principle #30Flexible shells and thin films

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 encapsulation coating effectively protects organic material layers from harmful species, reducing degradation and extending the electrostatic chuck's lifespan by maintaining thickness and chemical composition under exposure conditions.

Implementation Method 1

An encapsulation coating is applied via vapor deposition to protect organic material layers, forming a conformal layer that seals and encapsulates these layers

Methodology Applied

Scientific EffectVapor deposition: Physical Vapour Deposition

Data Source

PatentUS20260026304A1Electrostatic chuck with protective coating

Publication Date: 2026.01.22 ENTEGRIS INC

AI summary

Electrostatic chucks, as described herein, can include at least a first layer, a second layer including an organic material, an encapsulation coating, and a third layer. The second layer is located between the first and third layer such that at least a portion of the second layer is not covered. The encapsulation coating covers at least the portion of the second layer that is not covered. The encapsulation coating can be formed by atomic layer deposition or by chemical vapor deposition such that it encapsulates at least the uncovered portion of the second layer.