Ultra-Thin Wafers and Screens: All You Need to Know

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June 24, 2024

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A few years ago, Samsung’s Flip phone took the world by storm. Flexible optoelectronics applications are a new and exciting field for electronics, potentially changing how we interact with our devices. In this environment, we couldn’t help but wonder how much ultra flat wafers could influence this sector.

Ultra thin wafers are a fundamental component in thin film transistors (TFT), which are then integrated into screens. Here’s how that works.

is wearable tech possible with ultra flat wafers

Are Ultra-flat Wafers Needed in Screens?

Ultra-flat wafers are achieved by combining chemical etching and mechanical lapping on bulk silicon wafers. They can be about 2 micrometers (μm) thick, making them ideal to produce thin-film transistors (TFTs). This lies in the wafer’s unique properties:  

  • Their transmittance under the visible spectrum ranges from 44% to 67%, making them semi-transparent.

These thin-film transistors are then integrated into many display technologies.

Ultra Flat Wafers Applications

Because of their flexibility and transparency, an ultra flat wafer’s potential can be exploited for:

  • Display Technologies: Thin film transistors enable precise control of pixel switching, making vivid and responsive displays for LCDs, OLED screens, and other visual interfaces a possibility.
  • Wearable Technology: These wafers' flexibility is revolutionizing wearable technology.
ultra flat wafers and screens

Discover the Uniqueness of Ultra Flat Wafers

Ultra-flat wafers' special qualities and uses are improving our daily lives by opening the door for more flexible and inventive electronics.  

If you’re interested in learning more, reach out!

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