LC-tray degassing chamber

GMC LC-tray degassing cham

LC-tray degassing chamber

2. Degassing Chamber:
1. Vacuum profile;
1.1. Pressure set points freely adjustable between 1.103 and 1.10-3 mBar
1.1.1. Measurement range: 1.103 – 5.10-4
1.2. Time set points freely adjustable between 1 and 600 min per step
1.2.1. Degassing step (D) can range from minutes to days
1.3. Evacuation and ventilation rates must be controllable
1.4. The evacuation cycle (A – D) is executed automatically
1.4.1. The venting step (E) must be manually activated (operator)
1.5. Typical degassing profile

An LC-tray degassing chamber is a specialized vacuum chamber designed to remove trapped air and dissolved gases from liquid materials (such as Liquid Crystals or "LC liquid") contained in a tray. This process ensures that the material is free from bubbles prior to further processing, which is critical for the quality and reliability of electronic components and displays.

Core Functionality
- Controlled Vacuum Environment: The system generates a vacuum, reducing the pressure above the liquid, which forces trapped gas bubbles to rise and escape.
- Precision Profiles: High-end units provide freely adjustable pressure set points (e.g., between 1×10³ and 1×10⁻³ mBar) and time cycles (from minutes up to several days) to suit different material viscosities and process requirements.
- Automated Cycles: Evacuation cycles are performed automatically, while venting is manually controlled to prevent liquid agitation or sudden movement.

Key Components & Features
- Chamber Construction: Usually constructed from 304 stainless steel or polished aluminum to ensure high vacuum resistance, durability, and easy cleaning, thereby reducing the risk of contamination.
- LC-Tray Drawer: Special drawer or adaptation system ensures easy loading and unloading. It is vital that the tray stays perfectly level (waterpas) to avoid liquid spillage.
- Monitoring Window: A thick, transparent lid (often made from acrylic) or viewing panel enables operators to monitor the liquid surface and bubble behavior during the process.
- Cleanliness Standards: Interior surfaces are highly polished to prevent moisture retention and ensure no contamination by chamber materials.

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Typical Specifications (Based on industrial models such as GMC/Masevon):

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