Shadow Mask Management

The shadow masks produced with the Advantech U.S. process can be used multiple times. During each deposition step the shadow masks are exposed to the transported material. In the aperture regions this material forms the thin film pattern used to construct electronic devices. The solid regions of the masks are also coated with the deposition material. These deposits need to be removed in a regular cycle to maintain the mask aperture geometry. Advantech U.S. is providing mask cleaning and maintenance services to assure the proper mask lifecycle and positional accuracy, increasing the value for our mask customers.

Display manufacturers are driving the use of shadow masks on larger and larger substrates, both on display grade glass and flexible plastic substrates. Current display glass standards exceed 1000mm size, even for mobile display applications. Since the display processes require cost extensive infrastructure and process supplies, substrate size emerges as the prime cost factor.

The positional accuracy of shadow mask features suffers natively as their size increases. A perfectly accurate mask will experience thermal and mechanical influences during any deposition process resulting in deviations of individual apertures from their ideal position. This is a major detriment to display process yields.

Such thermal and mechanical dimensional deviations usually scale linear with mask size. Doubling the mask dimensions doubles the positional errors.

Advantech U.S. has developed mask management technology to accurately align, position and level multiple individual masks. These smaller masks exhibit superior dimensional accuracy, yet an array of theses masks can be used for large area substrates. Advantech U.S. is supplying this novel mask technology to the OLED display industry.

We are experts at taking a customer idea from the concept stage to production level. Please contact us about your embedded electronics and shadow mask needs.

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