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Silica Spacers

Silica spacers have a number of uses in the manufacturing of LCD’s. They can be used in the viewing area of a display to maintain cell spacing where the compression of a plastic spacer is not acceptable. For example, a low density of silica spacers is sometimes used in STN displays, where a uniform cell gap is more critical than in a normal TN display

Silica spacers (in combination with sealant) are also used by LCD manufacturers to help seal the LCD edges.  The spacers act as an aggregate to the normal seal material to provide a more robust material. Silica spacer are used because they have a higher resistance to compression than plastic spacers. 

In general, silica spacers are used because they have a better particle size distribution than chopped glass fiber, thus, resulting in better cell gap control.

Two types of grades are available: soft type and hard type.  The soft type is more elastic than the hard type.  




Silica Dioxide


Soft type, hard type, black-colored type


Spherically-shaped, transparent, silica beads with hardness and fine particle size distribution


LCD seal (inelastic)


Adhesive coating